1 /*
   2  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "classfile/classLoader.hpp"
  27 #include "classfile/javaClasses.hpp"
  28 #include "classfile/symbolTable.hpp"
  29 #include "classfile/systemDictionary.hpp"
  30 #include "classfile/vmSymbols.hpp"
  31 #include "interpreter/linkResolver.hpp"
  32 #ifndef SERIALGC
  33 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
  34 #endif // SERIALGC
  35 #include "memory/allocation.inline.hpp"
  36 #include "memory/gcLocker.inline.hpp"
  37 #include "memory/oopFactory.hpp"
  38 #include "memory/universe.inline.hpp"
  39 #include "oops/instanceKlass.hpp"
  40 #include "oops/instanceOop.hpp"
  41 #include "oops/markOop.hpp"
  42 #include "oops/methodOop.hpp"
  43 #include "oops/objArrayKlass.hpp"
  44 #include "oops/objArrayOop.hpp"
  45 #include "oops/oop.inline.hpp"
  46 #include "oops/symbol.hpp"
  47 #include "oops/typeArrayKlass.hpp"
  48 #include "oops/typeArrayOop.hpp"
  49 #include "prims/jni.h"
  50 #include "prims/jniCheck.hpp"
  51 #include "prims/jniExport.hpp"
  52 #include "prims/jniFastGetField.hpp"
  53 #include "prims/jvm.h"
  54 #include "prims/jvm_misc.hpp"
  55 #include "prims/jvmtiExport.hpp"
  56 #include "prims/jvmtiThreadState.hpp"
  57 #include "runtime/compilationPolicy.hpp"
  58 #include "runtime/fieldDescriptor.hpp"
  59 #include "runtime/fprofiler.hpp"
  60 #include "runtime/handles.inline.hpp"
  61 #include "runtime/interfaceSupport.hpp"
  62 #include "runtime/java.hpp"
  63 #include "runtime/javaCalls.hpp"
  64 #include "runtime/jfieldIDWorkaround.hpp"
  65 #include "runtime/reflection.hpp"
  66 #include "runtime/sharedRuntime.hpp"
  67 #include "runtime/signature.hpp"
  68 #include "runtime/vm_operations.hpp"
  69 #include "services/runtimeService.hpp"
  70 #include "trace/tracing.hpp"
  71 #include "trace/traceEventTypes.hpp"
  72 #include "utilities/defaultStream.hpp"
  73 #include "utilities/dtrace.hpp"
  74 #include "utilities/events.hpp"
  75 #include "utilities/histogram.hpp"
  76 #ifdef TARGET_OS_FAMILY_linux
  77 # include "os_linux.inline.hpp"
  78 # include "thread_linux.inline.hpp"
  79 #endif
  80 #ifdef TARGET_OS_FAMILY_solaris
  81 # include "os_solaris.inline.hpp"
  82 # include "thread_solaris.inline.hpp"
  83 #endif
  84 #ifdef TARGET_OS_FAMILY_windows
  85 # include "os_windows.inline.hpp"
  86 # include "thread_windows.inline.hpp"
  87 #endif
  88 #ifdef TARGET_OS_FAMILY_bsd
  89 # include "os_bsd.inline.hpp"
  90 # include "thread_bsd.inline.hpp"
  91 #endif
  92 
  93 static jint CurrentVersion = JNI_VERSION_1_6;
  94 
  95 
  96 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
  97 // '-return' probe regardless of the return path is taken out of the function.
  98 // Methods that have multiple return paths use this to avoid having to
  99 // instrument each return path.  Methods that use CHECK or THROW must use this
 100 // since those macros can cause an immedate uninstrumented return.
 101 //
 102 // In order to get the return value, a reference to the variable containing
 103 // the return value must be passed to the contructor of the object, and
 104 // the return value must be set before return (since the mark object has
 105 // a reference to it).
 106 //
 107 // Example:
 108 // DT_RETURN_MARK_DECL(SomeFunc, int);
 109 // JNI_ENTRY(int, SomeFunc, ...)
 110 //   int return_value = 0;
 111 //   DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
 112 //   foo(CHECK_0)
 113 //   return_value = 5;
 114 //   return return_value;
 115 // JNI_END
 116 #ifndef USDT2
 117 #define DT_RETURN_MARK_DECL(name, type)                                    \
 118   HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type);                \
 119   DTRACE_ONLY(                                                             \
 120     class DTraceReturnProbeMark_##name {                                   \
 121      public:                                                               \
 122       const type& _ret_ref;                                                \
 123       DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {}         \
 124       ~DTraceReturnProbeMark_##name() {                                    \
 125         HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref);           \
 126       }                                                                    \
 127     }                                                                      \
 128   )
 129 // Void functions are simpler since there's no return value
 130 #define DT_VOID_RETURN_MARK_DECL(name)                                     \
 131   HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return);                      \
 132   DTRACE_ONLY(                                                             \
 133     class DTraceReturnProbeMark_##name {                                   \
 134      public:                                                               \
 135       ~DTraceReturnProbeMark_##name() {                                    \
 136         HS_DTRACE_PROBE0(hotspot_jni, name##__return);                     \
 137       }                                                                    \
 138     }                                                                      \
 139   )
 140 
 141 #else /* USDT2 */
 142 
 143 #define DT_RETURN_MARK_DECL(name, type, probe)                             \
 144   DTRACE_ONLY(                                                             \
 145     class DTraceReturnProbeMark_##name {                                   \
 146      public:                                                               \
 147       const type& _ret_ref;                                                \
 148       DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {}         \
 149       ~DTraceReturnProbeMark_##name() {                                    \
 150         probe;                                                             \
 151       }                                                                    \
 152     }                                                                      \
 153   )
 154 // Void functions are simpler since there's no return value
 155 #define DT_VOID_RETURN_MARK_DECL(name, probe)                              \
 156   DTRACE_ONLY(                                                             \
 157     class DTraceReturnProbeMark_##name {                                   \
 158      public:                                                               \
 159       ~DTraceReturnProbeMark_##name() {                                    \
 160         probe;                                                             \
 161       }                                                                    \
 162     }                                                                      \
 163   )
 164 #endif /* USDT2 */
 165 
 166 // Place these macros in the function to mark the return.  Non-void
 167 // functions need the type and address of the return value.
 168 #define DT_RETURN_MARK(name, type, ref) \
 169   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
 170 #define DT_VOID_RETURN_MARK(name) \
 171   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
 172 
 173 
 174 // Use these to select distinct code for floating-point vs. non-floating point
 175 // situations.  Used from within common macros where we need slightly
 176 // different behavior for Float/Double
 177 #define FP_SELECT_Boolean(intcode, fpcode) intcode
 178 #define FP_SELECT_Byte(intcode, fpcode)    intcode
 179 #define FP_SELECT_Char(intcode, fpcode)    intcode
 180 #define FP_SELECT_Short(intcode, fpcode)   intcode
 181 #define FP_SELECT_Object(intcode, fpcode)  intcode
 182 #define FP_SELECT_Int(intcode, fpcode)     intcode
 183 #define FP_SELECT_Long(intcode, fpcode)    intcode
 184 #define FP_SELECT_Float(intcode, fpcode)   fpcode
 185 #define FP_SELECT_Double(intcode, fpcode)  fpcode
 186 #define FP_SELECT(TypeName, intcode, fpcode) \
 187   FP_SELECT_##TypeName(intcode, fpcode)
 188 
 189 #define COMMA ,
 190 
 191 // Choose DT_RETURN_MARK macros  based on the type: float/double -> void
 192 // (dtrace doesn't do FP yet)
 193 #ifndef USDT2
 194 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
 195   FP_SELECT(TypeName, \
 196     DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
 197 #else /* USDT2 */
 198 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe)    \
 199   FP_SELECT(TypeName, \
 200     DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
 201 #endif /* USDT2 */
 202 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
 203   FP_SELECT(TypeName, \
 204     DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
 205 
 206 
 207 // out-of-line helpers for class jfieldIDWorkaround:
 208 
 209 bool jfieldIDWorkaround::is_valid_jfieldID(klassOop k, jfieldID id) {
 210   if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
 211     uintptr_t as_uint = (uintptr_t) id;
 212     intptr_t offset = raw_instance_offset(id);
 213     if (is_checked_jfieldID(id)) {
 214       if (!klass_hash_ok(k, id)) {
 215         return false;
 216       }
 217     }
 218     return instanceKlass::cast(k)->contains_field_offset(offset);
 219   } else {
 220     JNIid* result = (JNIid*) id;
 221 #ifdef ASSERT
 222     return result != NULL && result->is_static_field_id();
 223 #else
 224     return result != NULL;
 225 #endif
 226   }
 227 }
 228 
 229 
 230 intptr_t jfieldIDWorkaround::encode_klass_hash(klassOop k, intptr_t offset) {
 231   if (offset <= small_offset_mask) {
 232     klassOop field_klass = k;
 233     klassOop super_klass = Klass::cast(field_klass)->super();
 234     // With compressed oops the most super class with nonstatic fields would
 235     // be the owner of fields embedded in the header.
 236     while (instanceKlass::cast(super_klass)->has_nonstatic_fields() &&
 237            instanceKlass::cast(super_klass)->contains_field_offset(offset)) {
 238       field_klass = super_klass;   // super contains the field also
 239       super_klass = Klass::cast(field_klass)->super();
 240     }
 241     debug_only(No_Safepoint_Verifier nosafepoint;)
 242     uintptr_t klass_hash = field_klass->identity_hash();
 243     return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
 244   } else {
 245 #if 0
 246     #ifndef PRODUCT
 247     {
 248       ResourceMark rm;
 249       warning("VerifyJNIFields: long offset %d in %s", offset, Klass::cast(k)->external_name());
 250     }
 251     #endif
 252 #endif
 253     return 0;
 254   }
 255 }
 256 
 257 bool jfieldIDWorkaround::klass_hash_ok(klassOop k, jfieldID id) {
 258   uintptr_t as_uint = (uintptr_t) id;
 259   intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
 260   do {
 261     debug_only(No_Safepoint_Verifier nosafepoint;)
 262     // Could use a non-blocking query for identity_hash here...
 263     if ((k->identity_hash() & klass_mask) == klass_hash)
 264       return true;
 265     k = Klass::cast(k)->super();
 266   } while (k != NULL);
 267   return false;
 268 }
 269 
 270 void jfieldIDWorkaround::verify_instance_jfieldID(klassOop k, jfieldID id) {
 271   guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
 272   uintptr_t as_uint = (uintptr_t) id;
 273   intptr_t offset = raw_instance_offset(id);
 274   if (VerifyJNIFields) {
 275     if (is_checked_jfieldID(id)) {
 276       guarantee(klass_hash_ok(k, id),
 277     "Bug in native code: jfieldID class must match object");
 278     } else {
 279 #if 0
 280       #ifndef PRODUCT
 281       if (Verbose) {
 282   ResourceMark rm;
 283   warning("VerifyJNIFields: unverified offset %d for %s", offset, Klass::cast(k)->external_name());
 284       }
 285       #endif
 286 #endif
 287     }
 288   }
 289   guarantee(instanceKlass::cast(k)->contains_field_offset(offset),
 290       "Bug in native code: jfieldID offset must address interior of object");
 291 }
 292 
 293 // Pick a reasonable higher bound for local capacity requested
 294 // for EnsureLocalCapacity and PushLocalFrame.  We don't want it too
 295 // high because a test (or very unusual application) may try to allocate
 296 // that many handles and run out of swap space.  An implementation is
 297 // permitted to allocate more handles than the ensured capacity, so this
 298 // value is set high enough to prevent compatibility problems.
 299 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
 300 
 301 
 302 // Wrapper to trace JNI functions
 303 
 304 #ifdef ASSERT
 305   Histogram* JNIHistogram;
 306   static volatile jint JNIHistogram_lock = 0;
 307 
 308   class JNITraceWrapper : public StackObj {
 309    public:
 310     JNITraceWrapper(const char* format, ...) {
 311       if (TraceJNICalls) {
 312         va_list ap;
 313         va_start(ap, format);
 314         tty->print("JNI ");
 315         tty->vprint_cr(format, ap);
 316         va_end(ap);
 317       }
 318     }
 319   };
 320 
 321   class JNIHistogramElement : public HistogramElement {
 322     public:
 323      JNIHistogramElement(const char* name);
 324   };
 325 
 326   JNIHistogramElement::JNIHistogramElement(const char* elementName) {
 327     _name = elementName;
 328     uintx count = 0;
 329 
 330     while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
 331       while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
 332         count +=1;
 333         if ( (WarnOnStalledSpinLock > 0)
 334           && (count % WarnOnStalledSpinLock == 0)) {
 335           warning("JNIHistogram_lock seems to be stalled");
 336         }
 337       }
 338      }
 339 
 340 
 341     if(JNIHistogram == NULL)
 342       JNIHistogram = new Histogram("JNI Call Counts",100);
 343 
 344     JNIHistogram->add_element(this);
 345     Atomic::dec(&JNIHistogram_lock);
 346   }
 347 
 348   #define JNICountWrapper(arg)                                     \
 349      static JNIHistogramElement* e = new JNIHistogramElement(arg); \
 350       /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
 351      if (e != NULL) e->increment_count()
 352   #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
 353 #else
 354   #define JNIWrapper(arg)
 355 #endif
 356 
 357 
 358 // Implementation of JNI entries
 359 
 360 #ifndef USDT2
 361 DT_RETURN_MARK_DECL(DefineClass, jclass);
 362 #else /* USDT2 */
 363 DT_RETURN_MARK_DECL(DefineClass, jclass
 364                     , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
 365 #endif /* USDT2 */
 366 
 367 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
 368                                   const jbyte *buf, jsize bufLen))
 369   JNIWrapper("DefineClass");
 370 
 371 #ifndef USDT2
 372   DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
 373     env, name, loaderRef, buf, bufLen);
 374 #else /* USDT2 */
 375   HOTSPOT_JNI_DEFINECLASS_ENTRY(
 376     env, (char*) name, loaderRef, (char*) buf, bufLen);
 377 #endif /* USDT2 */
 378   jclass cls = NULL;
 379   DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
 380 
 381   TempNewSymbol class_name = NULL;
 382   // Since exceptions can be thrown, class initialization can take place
 383   // if name is NULL no check for class name in .class stream has to be made.
 384   if (name != NULL) {
 385     const int str_len = (int)strlen(name);
 386     if (str_len > Symbol::max_length()) {
 387       // It's impossible to create this class;  the name cannot fit
 388       // into the constant pool.
 389       THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
 390     }
 391     class_name = SymbolTable::new_symbol(name, CHECK_NULL);
 392   }
 393   ResourceMark rm(THREAD);
 394   ClassFileStream st((u1*) buf, bufLen, NULL);
 395   Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
 396 
 397   if (UsePerfData && !class_loader.is_null()) {
 398     // check whether the current caller thread holds the lock or not.
 399     // If not, increment the corresponding counter
 400     if (ObjectSynchronizer::
 401         query_lock_ownership((JavaThread*)THREAD, class_loader) !=
 402         ObjectSynchronizer::owner_self) {
 403       ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
 404     }
 405   }
 406   klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader,
 407                                                      Handle(), &st, true,
 408                                                      CHECK_NULL);
 409 
 410   if (TraceClassResolution && k != NULL) {
 411     trace_class_resolution(k);
 412   }
 413 
 414   cls = (jclass)JNIHandles::make_local(
 415     env, Klass::cast(k)->java_mirror());
 416   return cls;
 417 JNI_END
 418 
 419 
 420 
 421 static bool first_time_FindClass = true;
 422 
 423 #ifndef USDT2
 424 DT_RETURN_MARK_DECL(FindClass, jclass);
 425 #else /* USDT2 */
 426 DT_RETURN_MARK_DECL(FindClass, jclass
 427                     , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
 428 #endif /* USDT2 */
 429 
 430 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
 431   JNIWrapper("FindClass");
 432 #ifndef USDT2
 433   DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
 434 #else /* USDT2 */
 435   HOTSPOT_JNI_FINDCLASS_ENTRY(
 436                               env, (char *)name);
 437 #endif /* USDT2 */
 438 
 439   jclass result = NULL;
 440   DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
 441 
 442   // Remember if we are the first invocation of jni_FindClass
 443   bool first_time = first_time_FindClass;
 444   first_time_FindClass = false;
 445 
 446   // Sanity check the name:  it cannot be null or larger than the maximum size
 447   // name we can fit in the constant pool.
 448   if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
 449     THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
 450   }
 451 
 452   //%note jni_3
 453   Handle loader;
 454   Handle protection_domain;
 455   // Find calling class
 456   instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
 457   if (k.not_null()) {
 458     loader = Handle(THREAD, k->class_loader());
 459     // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
 460     // in the correct class context.
 461     if (loader.is_null() &&
 462         k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
 463       JavaValue result(T_OBJECT);
 464       JavaCalls::call_static(&result, k,
 465                                       vmSymbols::getFromClass_name(),
 466                                       vmSymbols::void_class_signature(),
 467                                       thread);
 468       if (HAS_PENDING_EXCEPTION) {
 469         Handle ex(thread, thread->pending_exception());
 470         CLEAR_PENDING_EXCEPTION;
 471         THROW_HANDLE_0(ex);
 472       }
 473       oop mirror = (oop) result.get_jobject();
 474       loader = Handle(THREAD,
 475         instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->class_loader());
 476       protection_domain = Handle(THREAD,
 477         instanceKlass::cast(java_lang_Class::as_klassOop(mirror))->protection_domain());
 478     }
 479   } else {
 480     // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
 481     loader = Handle(THREAD, SystemDictionary::java_system_loader());
 482   }
 483 
 484   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
 485   result = find_class_from_class_loader(env, sym, true, loader,
 486                                         protection_domain, true, thread);
 487 
 488   if (TraceClassResolution && result != NULL) {
 489     trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result)));
 490   }
 491 
 492   // If we were the first invocation of jni_FindClass, we enable compilation again
 493   // rather than just allowing invocation counter to overflow and decay.
 494   // Controlled by flag DelayCompilationDuringStartup.
 495   if (first_time && !CompileTheWorld)
 496     CompilationPolicy::completed_vm_startup();
 497 
 498   return result;
 499 JNI_END
 500 
 501 #ifndef USDT2
 502 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
 503 #else /* USDT2 */
 504 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
 505                     , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
 506 #endif /* USDT2 */
 507 
 508 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
 509   JNIWrapper("FromReflectedMethod");
 510 #ifndef USDT2
 511   DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
 512 #else /* USDT2 */
 513   HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
 514                                         env, method);
 515 #endif /* USDT2 */
 516   jmethodID ret = NULL;
 517   DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
 518 
 519   // method is a handle to a java.lang.reflect.Method object
 520   oop reflected  = JNIHandles::resolve_non_null(method);
 521   oop mirror     = NULL;
 522   int slot       = 0;
 523 
 524   if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
 525     mirror = java_lang_reflect_Constructor::clazz(reflected);
 526     slot   = java_lang_reflect_Constructor::slot(reflected);
 527   } else {
 528     assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
 529     mirror = java_lang_reflect_Method::clazz(reflected);
 530     slot   = java_lang_reflect_Method::slot(reflected);
 531   }
 532   klassOop k     = java_lang_Class::as_klassOop(mirror);
 533 
 534   KlassHandle k1(THREAD, k);
 535   // Make sure class is initialized before handing id's out to methods
 536   Klass::cast(k1())->initialize(CHECK_NULL);
 537   methodOop m = instanceKlass::cast(k1())->method_with_idnum(slot);
 538   ret = m==NULL? NULL : m->jmethod_id();  // return NULL if reflected method deleted
 539   return ret;
 540 JNI_END
 541 
 542 #ifndef USDT2
 543 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
 544 #else /* USDT2 */
 545 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
 546                     , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
 547 #endif /* USDT2 */
 548 
 549 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
 550   JNIWrapper("FromReflectedField");
 551 #ifndef USDT2
 552   DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
 553 #else /* USDT2 */
 554   HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
 555                                        env, field);
 556 #endif /* USDT2 */
 557   jfieldID ret = NULL;
 558   DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
 559 
 560   // field is a handle to a java.lang.reflect.Field object
 561   oop reflected   = JNIHandles::resolve_non_null(field);
 562   oop mirror      = java_lang_reflect_Field::clazz(reflected);
 563   klassOop k      = java_lang_Class::as_klassOop(mirror);
 564   int slot        = java_lang_reflect_Field::slot(reflected);
 565   int modifiers   = java_lang_reflect_Field::modifiers(reflected);
 566 
 567   KlassHandle k1(THREAD, k);
 568   // Make sure class is initialized before handing id's out to fields
 569   Klass::cast(k1())->initialize(CHECK_NULL);
 570 
 571   // First check if this is a static field
 572   if (modifiers & JVM_ACC_STATIC) {
 573     intptr_t offset = instanceKlass::cast(k1())->field_offset( slot );
 574     JNIid* id = instanceKlass::cast(k1())->jni_id_for(offset);
 575     assert(id != NULL, "corrupt Field object");
 576     debug_only(id->set_is_static_field_id();)
 577     // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop
 578     ret = jfieldIDWorkaround::to_static_jfieldID(id);
 579     return ret;
 580   }
 581 
 582   // The slot is the index of the field description in the field-array
 583   // The jfieldID is the offset of the field within the object
 584   // It may also have hash bits for k, if VerifyJNIFields is turned on.
 585   intptr_t offset = instanceKlass::cast(k1())->field_offset( slot );
 586   assert(instanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
 587   ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
 588   return ret;
 589 JNI_END
 590 
 591 #ifndef USDT2
 592 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
 593 #else /* USDT2 */
 594 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
 595                     , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
 596 #endif /* USDT2 */
 597 
 598 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
 599   JNIWrapper("ToReflectedMethod");
 600 #ifndef USDT2
 601   DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
 602 #else /* USDT2 */
 603   HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
 604                                       env, cls, (uintptr_t) method_id, isStatic);
 605 #endif /* USDT2 */
 606   jobject ret = NULL;
 607   DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
 608 
 609   methodHandle m (THREAD, JNIHandles::resolve_jmethod_id(method_id));
 610   assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
 611   oop reflection_method;
 612   if (m->is_initializer()) {
 613     reflection_method = Reflection::new_constructor(m, CHECK_NULL);
 614   } else {
 615     reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
 616   }
 617   ret = JNIHandles::make_local(env, reflection_method);
 618   return ret;
 619 JNI_END
 620 
 621 #ifndef USDT2
 622 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
 623 #else /* USDT2 */
 624 DT_RETURN_MARK_DECL(GetSuperclass, jclass
 625                     , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
 626 #endif /* USDT2 */
 627 
 628 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
 629   JNIWrapper("GetSuperclass");
 630 #ifndef USDT2
 631   DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
 632 #else /* USDT2 */
 633   HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
 634                                   env, sub);
 635 #endif /* USDT2 */
 636   jclass obj = NULL;
 637   DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
 638 
 639   oop mirror = JNIHandles::resolve_non_null(sub);
 640   // primitive classes return NULL
 641   if (java_lang_Class::is_primitive(mirror)) return NULL;
 642 
 643   // Rules of Class.getSuperClass as implemented by KLass::java_super:
 644   // arrays return Object
 645   // interfaces return NULL
 646   // proper classes return Klass::super()
 647   klassOop k = java_lang_Class::as_klassOop(mirror);
 648   if (Klass::cast(k)->is_interface()) return NULL;
 649 
 650   // return mirror for superclass
 651   klassOop super = Klass::cast(k)->java_super();
 652   // super2 is the value computed by the compiler's getSuperClass intrinsic:
 653   debug_only(klassOop super2 = ( Klass::cast(k)->oop_is_javaArray()
 654                                  ? SystemDictionary::Object_klass()
 655                                  : Klass::cast(k)->super() ) );
 656   assert(super == super2,
 657          "java_super computation depends on interface, array, other super");
 658   obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(Klass::cast(super)->java_mirror());
 659   return obj;
 660 JNI_END
 661 
 662 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
 663   JNIWrapper("IsSubclassOf");
 664 #ifndef USDT2
 665   DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
 666 #else /* USDT2 */
 667   HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
 668                                      env, sub, super);
 669 #endif /* USDT2 */
 670   oop sub_mirror   = JNIHandles::resolve_non_null(sub);
 671   oop super_mirror = JNIHandles::resolve_non_null(super);
 672   if (java_lang_Class::is_primitive(sub_mirror) ||
 673       java_lang_Class::is_primitive(super_mirror)) {
 674     jboolean ret = (sub_mirror == super_mirror);
 675 #ifndef USDT2
 676     DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
 677 #else /* USDT2 */
 678     HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
 679                                         ret);
 680 #endif /* USDT2 */
 681     return ret;
 682   }
 683   klassOop sub_klass   = java_lang_Class::as_klassOop(sub_mirror);
 684   klassOop super_klass = java_lang_Class::as_klassOop(super_mirror);
 685   assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
 686   jboolean ret = Klass::cast(sub_klass)->is_subtype_of(super_klass) ?
 687                    JNI_TRUE : JNI_FALSE;
 688 #ifndef USDT2
 689   DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
 690 #else /* USDT2 */
 691   HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
 692                                       ret);
 693 #endif /* USDT2 */
 694   return ret;
 695 JNI_END
 696 
 697 #ifndef USDT2
 698 DT_RETURN_MARK_DECL(Throw, jint);
 699 #else /* USDT2 */
 700 DT_RETURN_MARK_DECL(Throw, jint
 701                     , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
 702 #endif /* USDT2 */
 703 
 704 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
 705   JNIWrapper("Throw");
 706 #ifndef USDT2
 707   DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
 708 #else /* USDT2 */
 709   HOTSPOT_JNI_THROW_ENTRY(
 710  env, obj);
 711 #endif /* USDT2 */
 712   jint ret = JNI_OK;
 713   DT_RETURN_MARK(Throw, jint, (const jint&)ret);
 714 
 715   THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
 716   ShouldNotReachHere();
 717 JNI_END
 718 
 719 #ifndef USDT2
 720 DT_RETURN_MARK_DECL(ThrowNew, jint);
 721 #else /* USDT2 */
 722 DT_RETURN_MARK_DECL(ThrowNew, jint
 723                     , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
 724 #endif /* USDT2 */
 725 
 726 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
 727   JNIWrapper("ThrowNew");
 728 #ifndef USDT2
 729   DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
 730 #else /* USDT2 */
 731   HOTSPOT_JNI_THROWNEW_ENTRY(
 732                              env, clazz, (char *) message);
 733 #endif /* USDT2 */
 734   jint ret = JNI_OK;
 735   DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
 736 
 737   instanceKlass* k = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
 738   Symbol*  name = k->name();
 739   Handle class_loader (THREAD,  k->class_loader());
 740   Handle protection_domain (THREAD, k->protection_domain());
 741   THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
 742   ShouldNotReachHere();
 743 JNI_END
 744 
 745 
 746 // JNI functions only transform a pending async exception to a synchronous
 747 // exception in ExceptionOccurred and ExceptionCheck calls, since
 748 // delivering an async exception in other places won't change the native
 749 // code's control flow and would be harmful when native code further calls
 750 // JNI functions with a pending exception. Async exception is also checked
 751 // during the call, so ExceptionOccurred/ExceptionCheck won't return
 752 // false but deliver the async exception at the very end during
 753 // state transition.
 754 
 755 static void jni_check_async_exceptions(JavaThread *thread) {
 756   assert(thread == Thread::current(), "must be itself");
 757   thread->check_and_handle_async_exceptions();
 758 }
 759 
 760 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
 761   JNIWrapper("ExceptionOccurred");
 762 #ifndef USDT2
 763   DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
 764 #else /* USDT2 */
 765   HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
 766                                       env);
 767 #endif /* USDT2 */
 768   jni_check_async_exceptions(thread);
 769   oop exception = thread->pending_exception();
 770   jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
 771 #ifndef USDT2
 772   DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
 773 #else /* USDT2 */
 774   HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
 775                                        ret);
 776 #endif /* USDT2 */
 777   return ret;
 778 JNI_END
 779 
 780 
 781 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
 782   JNIWrapper("ExceptionDescribe");
 783 #ifndef USDT2
 784   DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
 785 #else /* USDT2 */
 786   HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
 787                                       env);
 788 #endif /* USDT2 */
 789   if (thread->has_pending_exception()) {
 790     Handle ex(thread, thread->pending_exception());
 791     thread->clear_pending_exception();
 792     if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
 793       // Don't print anything if we are being killed.
 794     } else {
 795       jio_fprintf(defaultStream::error_stream(), "Exception ");
 796       if (thread != NULL && thread->threadObj() != NULL) {
 797         ResourceMark rm(THREAD);
 798         jio_fprintf(defaultStream::error_stream(),
 799         "in thread \"%s\" ", thread->get_thread_name());
 800       }
 801       if (ex->is_a(SystemDictionary::Throwable_klass())) {
 802         JavaValue result(T_VOID);
 803         JavaCalls::call_virtual(&result,
 804                                 ex,
 805                                 KlassHandle(THREAD,
 806                                   SystemDictionary::Throwable_klass()),
 807                                 vmSymbols::printStackTrace_name(),
 808                                 vmSymbols::void_method_signature(),
 809                                 THREAD);
 810         // If an exception is thrown in the call it gets thrown away. Not much
 811         // we can do with it. The native code that calls this, does not check
 812         // for the exception - hence, it might still be in the thread when DestroyVM gets
 813         // called, potentially causing a few asserts to trigger - since no pending exception
 814         // is expected.
 815         CLEAR_PENDING_EXCEPTION;
 816       } else {
 817         ResourceMark rm(THREAD);
 818         jio_fprintf(defaultStream::error_stream(),
 819         ". Uncaught exception of type %s.",
 820         Klass::cast(ex->klass())->external_name());
 821       }
 822     }
 823   }
 824 #ifndef USDT2
 825   DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
 826 #else /* USDT2 */
 827   HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
 828                                        );
 829 #endif /* USDT2 */
 830 JNI_END
 831 
 832 
 833 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
 834   JNIWrapper("ExceptionClear");
 835 #ifndef USDT2
 836   DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
 837 #else /* USDT2 */
 838   HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
 839                                    env);
 840 #endif /* USDT2 */
 841 
 842   // The jni code might be using this API to clear java thrown exception.
 843   // So just mark jvmti thread exception state as exception caught.
 844   JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
 845   if (state != NULL && state->is_exception_detected()) {
 846     state->set_exception_caught();
 847   }
 848   thread->clear_pending_exception();
 849 #ifndef USDT2
 850   DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
 851 #else /* USDT2 */
 852   HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
 853                                     );
 854 #endif /* USDT2 */
 855 JNI_END
 856 
 857 
 858 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
 859   JNIWrapper("FatalError");
 860 #ifndef USDT2
 861   DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
 862 #else /* USDT2 */
 863   HOTSPOT_JNI_FATALERROR_ENTRY(
 864                                env, (char *) msg);
 865 #endif /* USDT2 */
 866   tty->print_cr("FATAL ERROR in native method: %s", msg);
 867   thread->print_stack();
 868   os::abort(); // Dump core and abort
 869 JNI_END
 870 
 871 
 872 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
 873   JNIWrapper("PushLocalFrame");
 874 #ifndef USDT2
 875   DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
 876 #else /* USDT2 */
 877   HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
 878                                    env, capacity);
 879 #endif /* USDT2 */
 880   //%note jni_11
 881   if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
 882 #ifndef USDT2
 883     DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
 884 #else /* USDT2 */
 885     HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
 886                                       (uint32_t)JNI_ERR);
 887 #endif /* USDT2 */
 888     return JNI_ERR;
 889   }
 890   JNIHandleBlock* old_handles = thread->active_handles();
 891   JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
 892   assert(new_handles != NULL, "should not be NULL");
 893   new_handles->set_pop_frame_link(old_handles);
 894   thread->set_active_handles(new_handles);
 895   jint ret = JNI_OK;
 896 #ifndef USDT2
 897   DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
 898 #else /* USDT2 */
 899   HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
 900                                     ret);
 901 #endif /* USDT2 */
 902   return ret;
 903 JNI_END
 904 
 905 
 906 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
 907   JNIWrapper("PopLocalFrame");
 908 #ifndef USDT2
 909   DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
 910 #else /* USDT2 */
 911   HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
 912                                   env, result);
 913 #endif /* USDT2 */
 914   //%note jni_11
 915   Handle result_handle(thread, JNIHandles::resolve(result));
 916   JNIHandleBlock* old_handles = thread->active_handles();
 917   JNIHandleBlock* new_handles = old_handles->pop_frame_link();
 918   if (new_handles != NULL) {
 919     // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
 920     // This way code will still work if PopLocalFrame is called without a corresponding
 921     // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
 922     // the release_block call will release the blocks.
 923     thread->set_active_handles(new_handles);
 924     old_handles->set_pop_frame_link(NULL);              // clear link we won't release new_handles below
 925     JNIHandleBlock::release_block(old_handles, thread); // may block
 926     result = JNIHandles::make_local(thread, result_handle());
 927   }
 928 #ifndef USDT2
 929   DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
 930 #else /* USDT2 */
 931   HOTSPOT_JNI_POPLOCALFRAME_RETURN(
 932                                    result);
 933 #endif /* USDT2 */
 934   return result;
 935 JNI_END
 936 
 937 
 938 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
 939   JNIWrapper("NewGlobalRef");
 940 #ifndef USDT2
 941   DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
 942 #else /* USDT2 */
 943   HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
 944                                  env, ref);
 945 #endif /* USDT2 */
 946   Handle ref_handle(thread, JNIHandles::resolve(ref));
 947   jobject ret = JNIHandles::make_global(ref_handle);
 948 #ifndef USDT2
 949   DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
 950 #else /* USDT2 */
 951   HOTSPOT_JNI_NEWGLOBALREF_RETURN(
 952                                   ret);
 953 #endif /* USDT2 */
 954   return ret;
 955 JNI_END
 956 
 957 // Must be JNI_ENTRY (with HandleMark)
 958 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
 959   JNIWrapper("DeleteGlobalRef");
 960 #ifndef USDT2
 961   DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
 962 #else /* USDT2 */
 963   HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
 964                                     env, ref);
 965 #endif /* USDT2 */
 966   JNIHandles::destroy_global(ref);
 967 #ifndef USDT2
 968   DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
 969 #else /* USDT2 */
 970   HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
 971                                      );
 972 #endif /* USDT2 */
 973 JNI_END
 974 
 975 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
 976   JNIWrapper("DeleteLocalRef");
 977 #ifndef USDT2
 978   DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
 979 #else /* USDT2 */
 980   HOTSPOT_JNI_DELETELOCALREF_ENTRY(
 981                                    env, obj);
 982 #endif /* USDT2 */
 983   JNIHandles::destroy_local(obj);
 984 #ifndef USDT2
 985   DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
 986 #else /* USDT2 */
 987   HOTSPOT_JNI_DELETELOCALREF_RETURN(
 988                                     );
 989 #endif /* USDT2 */
 990 JNI_END
 991 
 992 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
 993   JNIWrapper("IsSameObject");
 994 #ifndef USDT2
 995   DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
 996 #else /* USDT2 */
 997   HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
 998                                  env, r1, r2);
 999 #endif /* USDT2 */
1000   oop a = JNIHandles::resolve(r1);
1001   oop b = JNIHandles::resolve(r2);
1002   jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1003 #ifndef USDT2
1004   DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1005 #else /* USDT2 */
1006   HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1007                                   ret);
1008 #endif /* USDT2 */
1009   return ret;
1010 JNI_END
1011 
1012 
1013 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1014   JNIWrapper("NewLocalRef");
1015 #ifndef USDT2
1016   DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1017 #else /* USDT2 */
1018   HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1019                                 env, ref);
1020 #endif /* USDT2 */
1021   jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1022 #ifndef USDT2
1023   DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1024 #else /* USDT2 */
1025   HOTSPOT_JNI_NEWLOCALREF_RETURN(
1026                                  ret);
1027 #endif /* USDT2 */
1028   return ret;
1029 JNI_END
1030 
1031 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1032   JNIWrapper("EnsureLocalCapacity");
1033 #ifndef USDT2
1034   DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1035 #else /* USDT2 */
1036   HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1037                                         env, capacity);
1038 #endif /* USDT2 */
1039   jint ret;
1040   if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1041     ret = JNI_OK;
1042   } else {
1043     ret = JNI_ERR;
1044   }
1045 #ifndef USDT2
1046   DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1047 #else /* USDT2 */
1048   HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1049                                          ret);
1050 #endif /* USDT2 */
1051   return ret;
1052 JNI_END
1053 
1054 // Return the Handle Type
1055 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1056   JNIWrapper("GetObjectRefType");
1057 #ifndef USDT2
1058   DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1059 #else /* USDT2 */
1060   HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1061                                      env, obj);
1062 #endif /* USDT2 */
1063   jobjectRefType ret;
1064   if (JNIHandles::is_local_handle(thread, obj) ||
1065       JNIHandles::is_frame_handle(thread, obj))
1066     ret = JNILocalRefType;
1067   else if (JNIHandles::is_global_handle(obj))
1068     ret = JNIGlobalRefType;
1069   else if (JNIHandles::is_weak_global_handle(obj))
1070     ret = JNIWeakGlobalRefType;
1071   else
1072     ret = JNIInvalidRefType;
1073 #ifndef USDT2
1074   DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1075 #else /* USDT2 */
1076   HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1077                                       (void *) ret);
1078 #endif /* USDT2 */
1079   return ret;
1080 JNI_END
1081 
1082 
1083 class JNI_ArgumentPusher : public SignatureIterator {
1084  protected:
1085   JavaCallArguments*  _arguments;
1086 
1087   virtual void get_bool   () = 0;
1088   virtual void get_char   () = 0;
1089   virtual void get_short  () = 0;
1090   virtual void get_byte   () = 0;
1091   virtual void get_int    () = 0;
1092   virtual void get_long   () = 0;
1093   virtual void get_float  () = 0;
1094   virtual void get_double () = 0;
1095   virtual void get_object () = 0;
1096 
1097   JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1098     this->_return_type = T_ILLEGAL;
1099     _arguments = NULL;
1100   }
1101 
1102  public:
1103   virtual void iterate( uint64_t fingerprint ) = 0;
1104 
1105   void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1106 
1107   inline void do_bool()                     { if (!is_return_type()) get_bool();   }
1108   inline void do_char()                     { if (!is_return_type()) get_char();   }
1109   inline void do_short()                    { if (!is_return_type()) get_short();  }
1110   inline void do_byte()                     { if (!is_return_type()) get_byte();   }
1111   inline void do_int()                      { if (!is_return_type()) get_int();    }
1112   inline void do_long()                     { if (!is_return_type()) get_long();   }
1113   inline void do_float()                    { if (!is_return_type()) get_float();  }
1114   inline void do_double()                   { if (!is_return_type()) get_double(); }
1115   inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1116   inline void do_array(int begin, int end)  { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1117   inline void do_void()                     { }
1118 
1119   JavaCallArguments* arguments()     { return _arguments; }
1120   void push_receiver(Handle h)       { _arguments->push_oop(h); }
1121 };
1122 
1123 
1124 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1125  protected:
1126   va_list _ap;
1127 
1128   inline void get_bool()   { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1129   inline void get_char()   { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1130   inline void get_short()  { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1131   inline void get_byte()   { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1132   inline void get_int()    { _arguments->push_int(va_arg(_ap, jint)); }
1133 
1134   // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1135 
1136   inline void get_long()   { _arguments->push_long(va_arg(_ap, jlong)); }
1137   inline void get_float()  { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1138   inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1139   inline void get_object() { jobject l = va_arg(_ap, jobject);
1140                              _arguments->push_oop(Handle((oop *)l, false)); }
1141 
1142   inline void set_ap(va_list rap) {
1143 #ifdef va_copy
1144     va_copy(_ap, rap);
1145 #elif defined (__va_copy)
1146     __va_copy(_ap, rap);
1147 #else
1148     _ap = rap;
1149 #endif
1150   }
1151 
1152  public:
1153   JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1154        : JNI_ArgumentPusher(signature) {
1155     set_ap(rap);
1156   }
1157   JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1158       : JNI_ArgumentPusher(JNIHandles::resolve_jmethod_id(method_id)->signature()) {
1159     set_ap(rap);
1160   }
1161 
1162   // Optimized path if we have the bitvector form of signature
1163   void iterate( uint64_t fingerprint ) {
1164     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1165     else {
1166       _return_type = (BasicType)((fingerprint >> static_feature_size) &
1167                                   result_feature_mask);
1168 
1169       assert(fingerprint, "Fingerprint should not be 0");
1170       fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1171       while ( 1 ) {
1172         switch ( fingerprint & parameter_feature_mask ) {
1173           case bool_parm:
1174           case char_parm:
1175           case short_parm:
1176           case byte_parm:
1177           case int_parm:
1178             get_int();
1179             break;
1180           case obj_parm:
1181             get_object();
1182             break;
1183           case long_parm:
1184             get_long();
1185             break;
1186           case float_parm:
1187             get_float();
1188             break;
1189           case double_parm:
1190             get_double();
1191             break;
1192           case done_parm:
1193             return;
1194             break;
1195           default:
1196             ShouldNotReachHere();
1197             break;
1198         }
1199         fingerprint >>= parameter_feature_size;
1200       }
1201     }
1202   }
1203 };
1204 
1205 
1206 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1207  protected:
1208   const jvalue *_ap;
1209 
1210   inline void get_bool()   { _arguments->push_int((jint)(_ap++)->z); }
1211   inline void get_char()   { _arguments->push_int((jint)(_ap++)->c); }
1212   inline void get_short()  { _arguments->push_int((jint)(_ap++)->s); }
1213   inline void get_byte()   { _arguments->push_int((jint)(_ap++)->b); }
1214   inline void get_int()    { _arguments->push_int((jint)(_ap++)->i); }
1215 
1216   inline void get_long()   { _arguments->push_long((_ap++)->j);  }
1217   inline void get_float()  { _arguments->push_float((_ap++)->f); }
1218   inline void get_double() { _arguments->push_double((_ap++)->d);}
1219   inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1220 
1221   inline void set_ap(const jvalue *rap) { _ap = rap; }
1222 
1223  public:
1224   JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1225        : JNI_ArgumentPusher(signature) {
1226     set_ap(rap);
1227   }
1228   JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1229       : JNI_ArgumentPusher(JNIHandles::resolve_jmethod_id(method_id)->signature()) {
1230     set_ap(rap);
1231   }
1232 
1233   // Optimized path if we have the bitvector form of signature
1234   void iterate( uint64_t fingerprint ) {
1235     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1236     else {
1237       _return_type = (BasicType)((fingerprint >> static_feature_size) &
1238                                   result_feature_mask);
1239       assert(fingerprint, "Fingerprint should not be 0");
1240       fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1241       while ( 1 ) {
1242         switch ( fingerprint & parameter_feature_mask ) {
1243           case bool_parm:
1244             get_bool();
1245             break;
1246           case char_parm:
1247             get_char();
1248             break;
1249           case short_parm:
1250             get_short();
1251             break;
1252           case byte_parm:
1253             get_byte();
1254             break;
1255           case int_parm:
1256             get_int();
1257             break;
1258           case obj_parm:
1259             get_object();
1260             break;
1261           case long_parm:
1262             get_long();
1263             break;
1264           case float_parm:
1265             get_float();
1266             break;
1267           case double_parm:
1268             get_double();
1269             break;
1270           case done_parm:
1271             return;
1272             break;
1273           default:
1274             ShouldNotReachHere();
1275             break;
1276         }
1277         fingerprint >>= parameter_feature_size;
1278       }
1279     }
1280   }
1281 };
1282 
1283 
1284 enum JNICallType {
1285   JNI_STATIC,
1286   JNI_VIRTUAL,
1287   JNI_NONVIRTUAL
1288 };
1289 
1290 static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) {
1291   assert(!method.is_null() , "method should not be null");
1292 
1293   KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1294   if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1295   KlassHandle spec_klass (THREAD, method->method_holder());
1296   Symbol*  name  = method->name();
1297   Symbol*  signature  = method->signature();
1298   CallInfo info;
1299   LinkResolver::resolve_interface_call(info, recv, recv_klass,  spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1300   return info.selected_method();
1301 }
1302 
1303 static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) {
1304   assert(!method.is_null() , "method should not be null");
1305 
1306   KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1307   if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1308   KlassHandle spec_klass (THREAD, method->method_holder());
1309   Symbol*  name  = method->name();
1310   Symbol*  signature  = method->signature();
1311   CallInfo info;
1312   LinkResolver::resolve_virtual_call(info, recv, recv_klass,  spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1313   return info.selected_method();
1314 }
1315 
1316 
1317 
1318 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1319   methodHandle method(THREAD, JNIHandles::resolve_jmethod_id(method_id));
1320 
1321   // Create object to hold arguments for the JavaCall, and associate it with
1322   // the jni parser
1323   ResourceMark rm(THREAD);
1324   int number_of_parameters = method->size_of_parameters();
1325   JavaCallArguments java_args(number_of_parameters);
1326   args->set_java_argument_object(&java_args);
1327 
1328   assert(method->is_static(), "method should be static");
1329 
1330   // Fill out JavaCallArguments object
1331   args->iterate( Fingerprinter(method).fingerprint() );
1332   // Initialize result type
1333   result->set_type(args->get_ret_type());
1334 
1335   // Invoke the method. Result is returned as oop.
1336   JavaCalls::call(result, method, &java_args, CHECK);
1337 
1338   // Convert result
1339   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1340     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1341   }
1342 }
1343 
1344 
1345 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1346   oop recv = JNIHandles::resolve(receiver);
1347   if (recv == NULL) {
1348     THROW(vmSymbols::java_lang_NullPointerException());
1349   }
1350   Handle h_recv(THREAD, recv);
1351 
1352   int number_of_parameters;
1353   methodOop selected_method;
1354   {
1355     methodOop m = JNIHandles::resolve_jmethod_id(method_id);
1356     number_of_parameters = m->size_of_parameters();
1357     klassOop holder = m->method_holder();
1358     if (!(Klass::cast(holder))->is_interface()) {
1359       // non-interface call -- for that little speed boost, don't handlize
1360       debug_only(No_Safepoint_Verifier nosafepoint;)
1361       if (call_type == JNI_VIRTUAL) {
1362         // jni_GetMethodID makes sure class is linked and initialized
1363         // so m should have a valid vtable index.
1364         int vtbl_index = m->vtable_index();
1365         if (vtbl_index != methodOopDesc::nonvirtual_vtable_index) {
1366           klassOop k = h_recv->klass();
1367           // k might be an arrayKlassOop but all vtables start at
1368           // the same place. The cast is to avoid virtual call and assertion.
1369           instanceKlass *ik = (instanceKlass*)k->klass_part();
1370           selected_method = ik->method_at_vtable(vtbl_index);
1371         } else {
1372           // final method
1373           selected_method = m;
1374         }
1375       } else {
1376         // JNI_NONVIRTUAL call
1377         selected_method = m;
1378       }
1379     } else {
1380       // interface call
1381       KlassHandle h_holder(THREAD, holder);
1382 
1383       int itbl_index = m->cached_itable_index();
1384       if (itbl_index == -1) {
1385         itbl_index = klassItable::compute_itable_index(m);
1386         m->set_cached_itable_index(itbl_index);
1387         // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
1388       }
1389       klassOop k = h_recv->klass();
1390       selected_method = instanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1391     }
1392   }
1393 
1394   methodHandle method(THREAD, selected_method);
1395 
1396   // Create object to hold arguments for the JavaCall, and associate it with
1397   // the jni parser
1398   ResourceMark rm(THREAD);
1399   JavaCallArguments java_args(number_of_parameters);
1400   args->set_java_argument_object(&java_args);
1401 
1402   // handle arguments
1403   assert(!method->is_static(), "method should not be static");
1404   args->push_receiver(h_recv); // Push jobject handle
1405 
1406   // Fill out JavaCallArguments object
1407   args->iterate( Fingerprinter(method).fingerprint() );
1408   // Initialize result type
1409   result->set_type(args->get_ret_type());
1410 
1411   // Invoke the method. Result is returned as oop.
1412   JavaCalls::call(result, method, &java_args, CHECK);
1413 
1414   // Convert result
1415   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1416     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1417   }
1418 }
1419 
1420 
1421 static instanceOop alloc_object(jclass clazz, TRAPS) {
1422   KlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
1423   Klass::cast(k())->check_valid_for_instantiation(false, CHECK_NULL);
1424   instanceKlass::cast(k())->initialize(CHECK_NULL);
1425   instanceOop ih = instanceKlass::cast(k())->allocate_instance(THREAD);
1426   return ih;
1427 }
1428 
1429 #ifndef USDT2
1430 DT_RETURN_MARK_DECL(AllocObject, jobject);
1431 #else /* USDT2 */
1432 DT_RETURN_MARK_DECL(AllocObject, jobject
1433                     , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1434 #endif /* USDT2 */
1435 
1436 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1437   JNIWrapper("AllocObject");
1438 
1439 #ifndef USDT2
1440   DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1441 #else /* USDT2 */
1442   HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1443                                 env, clazz);
1444 #endif /* USDT2 */
1445   jobject ret = NULL;
1446   DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1447 
1448   instanceOop i = alloc_object(clazz, CHECK_NULL);
1449   ret = JNIHandles::make_local(env, i);
1450   return ret;
1451 JNI_END
1452 
1453 #ifndef USDT2
1454 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1455 #else /* USDT2 */
1456 DT_RETURN_MARK_DECL(NewObjectA, jobject
1457                     , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1458 #endif /* USDT2 */
1459 
1460 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1461   JNIWrapper("NewObjectA");
1462 #ifndef USDT2
1463   DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1464 #else /* USDT2 */
1465   HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1466                                env, clazz, (uintptr_t) methodID);
1467 #endif /* USDT2 */
1468   jobject obj = NULL;
1469   DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1470 
1471   instanceOop i = alloc_object(clazz, CHECK_NULL);
1472   obj = JNIHandles::make_local(env, i);
1473   JavaValue jvalue(T_VOID);
1474   JNI_ArgumentPusherArray ap(methodID, args);
1475   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1476   return obj;
1477 JNI_END
1478 
1479 #ifndef USDT2
1480 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1481 #else /* USDT2 */
1482 DT_RETURN_MARK_DECL(NewObjectV, jobject
1483                     , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1484 #endif /* USDT2 */
1485 
1486 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1487   JNIWrapper("NewObjectV");
1488 #ifndef USDT2
1489   DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1490 #else /* USDT2 */
1491   HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1492                                env, clazz, (uintptr_t) methodID);
1493 #endif /* USDT2 */
1494   jobject obj = NULL;
1495   DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1496 
1497   instanceOop i = alloc_object(clazz, CHECK_NULL);
1498   obj = JNIHandles::make_local(env, i);
1499   JavaValue jvalue(T_VOID);
1500   JNI_ArgumentPusherVaArg ap(methodID, args);
1501   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1502   return obj;
1503 JNI_END
1504 
1505 #ifndef USDT2
1506 DT_RETURN_MARK_DECL(NewObject, jobject);
1507 #else /* USDT2 */
1508 DT_RETURN_MARK_DECL(NewObject, jobject
1509                     , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1510 #endif /* USDT2 */
1511 
1512 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1513   JNIWrapper("NewObject");
1514 #ifndef USDT2
1515   DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1516 #else /* USDT2 */
1517   HOTSPOT_JNI_NEWOBJECT_ENTRY(
1518                               env, clazz, (uintptr_t) methodID);
1519 #endif /* USDT2 */
1520   jobject obj = NULL;
1521   DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1522 
1523   instanceOop i = alloc_object(clazz, CHECK_NULL);
1524   obj = JNIHandles::make_local(env, i);
1525   va_list args;
1526   va_start(args, methodID);
1527   JavaValue jvalue(T_VOID);
1528   JNI_ArgumentPusherVaArg ap(methodID, args);
1529   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1530   va_end(args);
1531   return obj;
1532 JNI_END
1533 
1534 
1535 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1536   JNIWrapper("GetObjectClass");
1537 #ifndef USDT2
1538   DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1539 #else /* USDT2 */
1540   HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1541                                    env, obj);
1542 #endif /* USDT2 */
1543   klassOop k = JNIHandles::resolve_non_null(obj)->klass();
1544   jclass ret =
1545     (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
1546 #ifndef USDT2
1547   DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1548 #else /* USDT2 */
1549   HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1550                                     ret);
1551 #endif /* USDT2 */
1552   return ret;
1553 JNI_END
1554 
1555 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1556   JNIWrapper("IsInstanceOf");
1557 #ifndef USDT2
1558   DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1559 #else /* USDT2 */
1560   HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1561                                  env, obj, clazz);
1562 #endif /* USDT2 */
1563   jboolean ret = JNI_TRUE;
1564   if (obj != NULL) {
1565     ret = JNI_FALSE;
1566     klassOop k = java_lang_Class::as_klassOop(
1567       JNIHandles::resolve_non_null(clazz));
1568     if (k != NULL) {
1569       ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1570     }
1571   }
1572 #ifndef USDT2
1573   DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1574 #else /* USDT2 */
1575   HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1576                                   ret);
1577 #endif /* USDT2 */
1578   return ret;
1579 JNI_END
1580 
1581 
1582 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1583                                const char *sig, bool is_static, TRAPS) {
1584   // %%%% This code should probably just call into a method in the LinkResolver
1585   //
1586   // The class should have been loaded (we have an instance of the class
1587   // passed in) so the method and signature should already be in the symbol
1588   // table.  If they're not there, the method doesn't exist.
1589   const char *name_to_probe = (name_str == NULL)
1590                         ? vmSymbols::object_initializer_name()->as_C_string()
1591                         : name_str;
1592   TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1593   TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1594 
1595   if (name == NULL || signature == NULL) {
1596     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1597   }
1598 
1599   // Throw a NoSuchMethodError exception if we have an instance of a
1600   // primitive java.lang.Class
1601   if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1602     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1603   }
1604 
1605   KlassHandle klass(THREAD,
1606                java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
1607 
1608   // Make sure class is linked and initialized before handing id's out to
1609   // methodOops.
1610   Klass::cast(klass())->initialize(CHECK_NULL);
1611 
1612   methodOop m;
1613   if (name == vmSymbols::object_initializer_name() ||
1614       name == vmSymbols::class_initializer_name()) {
1615     // Never search superclasses for constructors
1616     if (klass->oop_is_instance()) {
1617       m = instanceKlass::cast(klass())->find_method(name, signature);
1618     } else {
1619       m = NULL;
1620     }
1621   } else {
1622     m = klass->lookup_method(name, signature);
1623     // Look up interfaces
1624     if (m == NULL && klass->oop_is_instance()) {
1625       m = instanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
1626                                                                    signature);
1627     }
1628   }
1629   if (m == NULL || (m->is_static() != is_static)) {
1630     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1631   }
1632   return m->jmethod_id();
1633 }
1634 
1635 
1636 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1637           const char *name, const char *sig))
1638   JNIWrapper("GetMethodID");
1639 #ifndef USDT2
1640   DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1641 #else /* USDT2 */
1642   HOTSPOT_JNI_GETMETHODID_ENTRY(
1643                                 env, clazz, (char *) name, (char *) sig);
1644 #endif /* USDT2 */
1645   jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1646 #ifndef USDT2
1647   DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1648 #else /* USDT2 */
1649   HOTSPOT_JNI_GETMETHODID_RETURN(
1650                                  (uintptr_t) ret);
1651 #endif /* USDT2 */
1652   return ret;
1653 JNI_END
1654 
1655 
1656 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1657           const char *name, const char *sig))
1658   JNIWrapper("GetStaticMethodID");
1659 #ifndef USDT2
1660   DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1661 #else /* USDT2 */
1662   HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1663                                       env, (char *) clazz, (char *) name, (char *)sig);
1664 #endif /* USDT2 */
1665   jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1666 #ifndef USDT2
1667   DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1668 #else /* USDT2 */
1669   HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1670                                        (uintptr_t) ret);
1671 #endif /* USDT2 */
1672   return ret;
1673 JNI_END
1674 
1675 
1676 
1677 //
1678 // Calling Methods
1679 //
1680 
1681 #ifndef USDT2
1682 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1683 \
1684   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1685   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1686   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1687 \
1688 JNI_ENTRY(ResultType, \
1689           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1690   JNIWrapper("Call" XSTR(Result) "Method"); \
1691 \
1692   DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1693   ResultType ret = 0;\
1694   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1695                      (const ResultType&)ret);\
1696 \
1697   va_list args; \
1698   va_start(args, methodID); \
1699   JavaValue jvalue(Tag); \
1700   JNI_ArgumentPusherVaArg ap(methodID, args); \
1701   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1702   va_end(args); \
1703   ret = jvalue.get_##ResultType(); \
1704   return ret;\
1705 JNI_END \
1706 \
1707 \
1708 JNI_ENTRY(ResultType, \
1709           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1710   JNIWrapper("Call" XSTR(Result) "MethodV"); \
1711 \
1712   DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1713   ResultType ret = 0;\
1714   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1715                      (const ResultType&)ret);\
1716 \
1717   JavaValue jvalue(Tag); \
1718   JNI_ArgumentPusherVaArg ap(methodID, args); \
1719   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1720   ret = jvalue.get_##ResultType(); \
1721   return ret;\
1722 JNI_END \
1723 \
1724 \
1725 JNI_ENTRY(ResultType, \
1726           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1727   JNIWrapper("Call" XSTR(Result) "MethodA"); \
1728   DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1729   ResultType ret = 0;\
1730   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1731                      (const ResultType&)ret);\
1732 \
1733   JavaValue jvalue(Tag); \
1734   JNI_ArgumentPusherArray ap(methodID, args); \
1735   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1736   ret = jvalue.get_##ResultType(); \
1737   return ret;\
1738 JNI_END
1739 
1740 // the runtime type of subword integral basic types is integer
1741 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1742 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE)
1743 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR)
1744 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT)
1745 
1746 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT)
1747 DEFINE_CALLMETHOD(jint,     Int,     T_INT)
1748 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG)
1749 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT)
1750 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE)
1751 
1752 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1753 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1754 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1755 
1756 #else /* USDT2 */
1757 
1758 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1759                           , EntryProbe, ReturnProbe)    \
1760 \
1761   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1762                           , ReturnProbe);                          \
1763 \
1764 JNI_ENTRY(ResultType, \
1765           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1766   JNIWrapper("Call" XSTR(Result) "Method"); \
1767 \
1768   EntryProbe; \
1769   ResultType ret = 0;\
1770   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1771                      (const ResultType&)ret);\
1772 \
1773   va_list args; \
1774   va_start(args, methodID); \
1775   JavaValue jvalue(Tag); \
1776   JNI_ArgumentPusherVaArg ap(methodID, args); \
1777   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1778   va_end(args); \
1779   ret = jvalue.get_##ResultType(); \
1780   return ret;\
1781 JNI_END
1782 
1783 // the runtime type of subword integral basic types is integer
1784 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1785                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1786                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1787 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE
1788                   , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1789                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1790 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR
1791                   , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1792                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1793 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT
1794                   , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1795                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1796 
1797 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT
1798                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1799                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1800 DEFINE_CALLMETHOD(jint,     Int,     T_INT,
1801                   HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1802                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1803 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG
1804                   , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1805                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1806 // Float and double probes don't return value because dtrace doesn't currently support it
1807 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT
1808                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1809                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1810 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE
1811                   , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1812                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1813 
1814 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1815                           , EntryProbe, ReturnProbe)    \
1816 \
1817   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1818                           , ReturnProbe);                          \
1819 \
1820 JNI_ENTRY(ResultType, \
1821           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1822   JNIWrapper("Call" XSTR(Result) "MethodV"); \
1823 \
1824   EntryProbe;\
1825   ResultType ret = 0;\
1826   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1827                      (const ResultType&)ret);\
1828 \
1829   JavaValue jvalue(Tag); \
1830   JNI_ArgumentPusherVaArg ap(methodID, args); \
1831   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1832   ret = jvalue.get_##ResultType(); \
1833   return ret;\
1834 JNI_END
1835 
1836 // the runtime type of subword integral basic types is integer
1837 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1838                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1839                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1840 DEFINE_CALLMETHODV(jbyte,    Byte,    T_BYTE
1841                   , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1842                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1843 DEFINE_CALLMETHODV(jchar,    Char,    T_CHAR
1844                   , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1845                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1846 DEFINE_CALLMETHODV(jshort,   Short,   T_SHORT
1847                   , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1848                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1849 
1850 DEFINE_CALLMETHODV(jobject,  Object,  T_OBJECT
1851                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1852                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1853 DEFINE_CALLMETHODV(jint,     Int,     T_INT,
1854                   HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1855                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1856 DEFINE_CALLMETHODV(jlong,    Long,    T_LONG
1857                   , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1858                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1859 // Float and double probes don't return value because dtrace doesn't currently support it
1860 DEFINE_CALLMETHODV(jfloat,   Float,   T_FLOAT
1861                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1862                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1863 DEFINE_CALLMETHODV(jdouble,  Double,  T_DOUBLE
1864                   , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1865                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1866 
1867 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1868                           , EntryProbe, ReturnProbe)    \
1869 \
1870   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1871                           , ReturnProbe);                          \
1872 \
1873 JNI_ENTRY(ResultType, \
1874           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1875   JNIWrapper("Call" XSTR(Result) "MethodA"); \
1876   EntryProbe; \
1877   ResultType ret = 0;\
1878   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1879                      (const ResultType&)ret);\
1880 \
1881   JavaValue jvalue(Tag); \
1882   JNI_ArgumentPusherArray ap(methodID, args); \
1883   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1884   ret = jvalue.get_##ResultType(); \
1885   return ret;\
1886 JNI_END
1887 
1888 // the runtime type of subword integral basic types is integer
1889 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1890                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1891                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1892 DEFINE_CALLMETHODA(jbyte,    Byte,    T_BYTE
1893                   , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1894                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1895 DEFINE_CALLMETHODA(jchar,    Char,    T_CHAR
1896                   , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1897                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1898 DEFINE_CALLMETHODA(jshort,   Short,   T_SHORT
1899                   , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1900                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1901 
1902 DEFINE_CALLMETHODA(jobject,  Object,  T_OBJECT
1903                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1904                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1905 DEFINE_CALLMETHODA(jint,     Int,     T_INT,
1906                   HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1907                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1908 DEFINE_CALLMETHODA(jlong,    Long,    T_LONG
1909                   , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1910                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1911 // Float and double probes don't return value because dtrace doesn't currently support it
1912 DEFINE_CALLMETHODA(jfloat,   Float,   T_FLOAT
1913                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1914                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1915 DEFINE_CALLMETHODA(jdouble,  Double,  T_DOUBLE
1916                   , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1917                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1918 
1919 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1920 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1921 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1922 
1923 #endif /* USDT2 */
1924 
1925 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1926   JNIWrapper("CallVoidMethod");
1927 #ifndef USDT2
1928   DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1929 #else /* USDT2 */
1930   HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1931                                    env, obj, (uintptr_t) methodID);
1932 #endif /* USDT2 */
1933   DT_VOID_RETURN_MARK(CallVoidMethod);
1934 
1935   va_list args;
1936   va_start(args, methodID);
1937   JavaValue jvalue(T_VOID);
1938   JNI_ArgumentPusherVaArg ap(methodID, args);
1939   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1940   va_end(args);
1941 JNI_END
1942 
1943 
1944 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1945   JNIWrapper("CallVoidMethodV");
1946 #ifndef USDT2
1947   DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1948 #else /* USDT2 */
1949   HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1950                                     env, obj, (uintptr_t) methodID);
1951 #endif /* USDT2 */
1952   DT_VOID_RETURN_MARK(CallVoidMethodV);
1953 
1954   JavaValue jvalue(T_VOID);
1955   JNI_ArgumentPusherVaArg ap(methodID, args);
1956   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1957 JNI_END
1958 
1959 
1960 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1961   JNIWrapper("CallVoidMethodA");
1962 #ifndef USDT2
1963   DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1964 #else /* USDT2 */
1965   HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1966                                     env, obj, (uintptr_t) methodID);
1967 #endif /* USDT2 */
1968   DT_VOID_RETURN_MARK(CallVoidMethodA);
1969 
1970   JavaValue jvalue(T_VOID);
1971   JNI_ArgumentPusherArray ap(methodID, args);
1972   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1973 JNI_END
1974 
1975 
1976 #ifndef USDT2
1977 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1978 \
1979   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1980   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1981   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1982 \
1983 JNI_ENTRY(ResultType, \
1984           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1985   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1986 \
1987   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1988   ResultType ret;\
1989   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1990                      (const ResultType&)ret);\
1991 \
1992   va_list args; \
1993   va_start(args, methodID); \
1994   JavaValue jvalue(Tag); \
1995   JNI_ArgumentPusherVaArg ap(methodID, args); \
1996   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1997   va_end(args); \
1998   ret = jvalue.get_##ResultType(); \
1999   return ret;\
2000 JNI_END \
2001 \
2002 JNI_ENTRY(ResultType, \
2003           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2004   JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
2005   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
2006   ResultType ret;\
2007   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2008                      (const ResultType&)ret);\
2009 \
2010   JavaValue jvalue(Tag); \
2011   JNI_ArgumentPusherVaArg ap(methodID, args); \
2012   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2013   ret = jvalue.get_##ResultType(); \
2014   return ret;\
2015 JNI_END \
2016 \
2017 JNI_ENTRY(ResultType, \
2018           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2019   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2020   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
2021   ResultType ret;\
2022   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2023                      (const ResultType&)ret);\
2024 \
2025   JavaValue jvalue(Tag); \
2026   JNI_ArgumentPusherArray ap(methodID, args); \
2027   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2028   ret = jvalue.get_##ResultType(); \
2029   return ret;\
2030 JNI_END
2031 
2032 // the runtime type of subword integral basic types is integer
2033 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2034 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE)
2035 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR)
2036 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT)
2037 
2038 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT)
2039 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT)
2040 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG)
2041 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT)
2042 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE)
2043 
2044 
2045 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2046 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2047 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2048 
2049 #else /* USDT2 */
2050 
2051 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2052                                     , EntryProbe, ReturnProbe)      \
2053 \
2054   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2055                           , ReturnProbe);\
2056 \
2057 JNI_ENTRY(ResultType, \
2058           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2059   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2060 \
2061   EntryProbe;\
2062   ResultType ret;\
2063   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2064                      (const ResultType&)ret);\
2065 \
2066   va_list args; \
2067   va_start(args, methodID); \
2068   JavaValue jvalue(Tag); \
2069   JNI_ArgumentPusherVaArg ap(methodID, args); \
2070   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2071   va_end(args); \
2072   ret = jvalue.get_##ResultType(); \
2073   return ret;\
2074 JNI_END
2075 
2076 // the runtime type of subword integral basic types is integer
2077 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2078                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2079                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2080 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE
2081                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2082                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2083 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR
2084                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2085                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2086 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT
2087                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2088                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2089 
2090 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT
2091                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2092                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2093 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT
2094                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2095                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2096 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG
2097                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2098 // Float and double probes don't return value because dtrace doesn't currently support it
2099                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2100 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT
2101                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2102                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2103 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE
2104                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2105                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2106 
2107 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2108                                     , EntryProbe, ReturnProbe)      \
2109 \
2110   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2111                           , ReturnProbe);\
2112 \
2113 JNI_ENTRY(ResultType, \
2114           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2115   JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2116 \
2117   EntryProbe;\
2118   ResultType ret;\
2119   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2120                      (const ResultType&)ret);\
2121 \
2122   JavaValue jvalue(Tag); \
2123   JNI_ArgumentPusherVaArg ap(methodID, args); \
2124   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2125   ret = jvalue.get_##ResultType(); \
2126   return ret;\
2127 JNI_END
2128 
2129 // the runtime type of subword integral basic types is integer
2130 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2131                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2132                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2133 DEFINE_CALLNONVIRTUALMETHODV(jbyte,    Byte,    T_BYTE
2134                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2135                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2136 DEFINE_CALLNONVIRTUALMETHODV(jchar,    Char,    T_CHAR
2137                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2138                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2139 DEFINE_CALLNONVIRTUALMETHODV(jshort,   Short,   T_SHORT
2140                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2141                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2142 
2143 DEFINE_CALLNONVIRTUALMETHODV(jobject,  Object,  T_OBJECT
2144                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2145                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2146 DEFINE_CALLNONVIRTUALMETHODV(jint,     Int,     T_INT
2147                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2148                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2149 DEFINE_CALLNONVIRTUALMETHODV(jlong,    Long,    T_LONG
2150                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2151 // Float and double probes don't return value because dtrace doesn't currently support it
2152                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2153 DEFINE_CALLNONVIRTUALMETHODV(jfloat,   Float,   T_FLOAT
2154                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2155                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2156 DEFINE_CALLNONVIRTUALMETHODV(jdouble,  Double,  T_DOUBLE
2157                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2158                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2159 
2160 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2161                                     , EntryProbe, ReturnProbe)      \
2162 \
2163   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2164                           , ReturnProbe);\
2165 \
2166 JNI_ENTRY(ResultType, \
2167           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2168   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2169 \
2170   EntryProbe;\
2171   ResultType ret;\
2172   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2173                      (const ResultType&)ret);\
2174 \
2175   JavaValue jvalue(Tag); \
2176   JNI_ArgumentPusherArray ap(methodID, args); \
2177   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2178   ret = jvalue.get_##ResultType(); \
2179   return ret;\
2180 JNI_END
2181 
2182 // the runtime type of subword integral basic types is integer
2183 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2184                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2185                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2186 DEFINE_CALLNONVIRTUALMETHODA(jbyte,    Byte,    T_BYTE
2187                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2188                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2189 DEFINE_CALLNONVIRTUALMETHODA(jchar,    Char,    T_CHAR
2190                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2191                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2192 DEFINE_CALLNONVIRTUALMETHODA(jshort,   Short,   T_SHORT
2193                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2194                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2195 
2196 DEFINE_CALLNONVIRTUALMETHODA(jobject,  Object,  T_OBJECT
2197                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2198                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2199 DEFINE_CALLNONVIRTUALMETHODA(jint,     Int,     T_INT
2200                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2201                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2202 DEFINE_CALLNONVIRTUALMETHODA(jlong,    Long,    T_LONG
2203                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2204 // Float and double probes don't return value because dtrace doesn't currently support it
2205                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2206 DEFINE_CALLNONVIRTUALMETHODA(jfloat,   Float,   T_FLOAT
2207                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2208                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2209 DEFINE_CALLNONVIRTUALMETHODA(jdouble,  Double,  T_DOUBLE
2210                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2211                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2212 
2213 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2214                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2215 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2216                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2217 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2218                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2219 #endif /* USDT2 */
2220 
2221 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2222   JNIWrapper("CallNonvirtualVoidMethod");
2223 
2224 #ifndef USDT2
2225   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2226                env, obj, cls, methodID);
2227 #else /* USDT2 */
2228   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2229                env, obj, cls, (uintptr_t) methodID);
2230 #endif /* USDT2 */
2231   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2232 
2233   va_list args;
2234   va_start(args, methodID);
2235   JavaValue jvalue(T_VOID);
2236   JNI_ArgumentPusherVaArg ap(methodID, args);
2237   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2238   va_end(args);
2239 JNI_END
2240 
2241 
2242 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2243   JNIWrapper("CallNonvirtualVoidMethodV");
2244 
2245 #ifndef USDT2
2246   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2247                env, obj, cls, methodID);
2248 #else /* USDT2 */
2249   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2250                env, obj, cls, (uintptr_t) methodID);
2251 #endif /* USDT2 */
2252   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2253 
2254   JavaValue jvalue(T_VOID);
2255   JNI_ArgumentPusherVaArg ap(methodID, args);
2256   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2257 JNI_END
2258 
2259 
2260 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2261   JNIWrapper("CallNonvirtualVoidMethodA");
2262 #ifndef USDT2
2263   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2264                 env, obj, cls, methodID);
2265 #else /* USDT2 */
2266   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2267                 env, obj, cls, (uintptr_t) methodID);
2268 #endif /* USDT2 */
2269   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2270   JavaValue jvalue(T_VOID);
2271   JNI_ArgumentPusherArray ap(methodID, args);
2272   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2273 JNI_END
2274 
2275 
2276 #ifndef USDT2
2277 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2278 \
2279   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2280   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2281   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2282 \
2283 JNI_ENTRY(ResultType, \
2284           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2285   JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2286 \
2287   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2288   ResultType ret = 0;\
2289   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2290                      (const ResultType&)ret);\
2291 \
2292   va_list args; \
2293   va_start(args, methodID); \
2294   JavaValue jvalue(Tag); \
2295   JNI_ArgumentPusherVaArg ap(methodID, args); \
2296   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2297   va_end(args); \
2298   ret = jvalue.get_##ResultType(); \
2299   return ret;\
2300 JNI_END \
2301 \
2302 JNI_ENTRY(ResultType, \
2303           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2304   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2305   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2306   ResultType ret = 0;\
2307   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2308                      (const ResultType&)ret);\
2309 \
2310   JavaValue jvalue(Tag); \
2311   JNI_ArgumentPusherVaArg ap(methodID, args); \
2312   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2313   ret = jvalue.get_##ResultType(); \
2314   return ret;\
2315 JNI_END \
2316 \
2317 JNI_ENTRY(ResultType, \
2318           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2319   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2320   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2321   ResultType ret = 0;\
2322   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2323                      (const ResultType&)ret);\
2324 \
2325   JavaValue jvalue(Tag); \
2326   JNI_ArgumentPusherArray ap(methodID, args); \
2327   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2328   ret = jvalue.get_##ResultType(); \
2329   return ret;\
2330 JNI_END
2331 
2332 // the runtime type of subword integral basic types is integer
2333 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2334 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE)
2335 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR)
2336 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT)
2337 
2338 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT)
2339 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT)
2340 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG)
2341 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT)
2342 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE)
2343 
2344 
2345 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2346 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2347 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2348 
2349 #else /* USDT2 */
2350 
2351 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2352                                 , EntryProbe, ResultProbe) \
2353 \
2354   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2355                           , ResultProbe);                               \
2356 \
2357 JNI_ENTRY(ResultType, \
2358           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2359   JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2360 \
2361   EntryProbe; \
2362   ResultType ret = 0;\
2363   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2364                      (const ResultType&)ret);\
2365 \
2366   va_list args; \
2367   va_start(args, methodID); \
2368   JavaValue jvalue(Tag); \
2369   JNI_ArgumentPusherVaArg ap(methodID, args); \
2370   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2371   va_end(args); \
2372   ret = jvalue.get_##ResultType(); \
2373   return ret;\
2374 JNI_END
2375 
2376 // the runtime type of subword integral basic types is integer
2377 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2378                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2379                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2380 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE
2381                         , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2382                         HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2383 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR
2384                         , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2385                         HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2386 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT
2387                         , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2388                         HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2389 
2390 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT
2391                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2392                         HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2393 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT
2394                         , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2395                         HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2396 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG
2397                         , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2398                         HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2399 // Float and double probes don't return value because dtrace doesn't currently support it
2400 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT
2401                         , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2402                         HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2403 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE
2404                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2405                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2406 
2407 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2408                                 , EntryProbe, ResultProbe) \
2409 \
2410   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2411                           , ResultProbe);                               \
2412 \
2413 JNI_ENTRY(ResultType, \
2414           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2415   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2416 \
2417   EntryProbe; \
2418   ResultType ret = 0;\
2419   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2420                      (const ResultType&)ret);\
2421 \
2422   JavaValue jvalue(Tag); \
2423   JNI_ArgumentPusherVaArg ap(methodID, args); \
2424   /* Make sure class is initialized before trying to invoke its method */ \
2425   KlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); \
2426   Klass::cast(k())->initialize(CHECK_0); \
2427   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2428   va_end(args); \
2429   ret = jvalue.get_##ResultType(); \
2430   return ret;\
2431 JNI_END
2432 
2433 // the runtime type of subword integral basic types is integer
2434 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2435                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2436                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2437 DEFINE_CALLSTATICMETHODV(jbyte,    Byte,    T_BYTE
2438                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2439                         HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2440 DEFINE_CALLSTATICMETHODV(jchar,    Char,    T_CHAR
2441                         , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2442                         HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2443 DEFINE_CALLSTATICMETHODV(jshort,   Short,   T_SHORT
2444                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2445                         HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2446 
2447 DEFINE_CALLSTATICMETHODV(jobject,  Object,  T_OBJECT
2448                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2449                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2450 DEFINE_CALLSTATICMETHODV(jint,     Int,     T_INT
2451                         , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2452                         HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2453 DEFINE_CALLSTATICMETHODV(jlong,    Long,    T_LONG
2454                         , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2455                         HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2456 // Float and double probes don't return value because dtrace doesn't currently support it
2457 DEFINE_CALLSTATICMETHODV(jfloat,   Float,   T_FLOAT
2458                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2459                         HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2460 DEFINE_CALLSTATICMETHODV(jdouble,  Double,  T_DOUBLE
2461                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2462                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2463 
2464 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2465                                 , EntryProbe, ResultProbe) \
2466 \
2467   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2468                           , ResultProbe);                               \
2469 \
2470 JNI_ENTRY(ResultType, \
2471           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2472   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2473 \
2474   EntryProbe; \
2475   ResultType ret = 0;\
2476   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2477                      (const ResultType&)ret);\
2478 \
2479   JavaValue jvalue(Tag); \
2480   JNI_ArgumentPusherArray ap(methodID, args); \
2481   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2482   ret = jvalue.get_##ResultType(); \
2483   return ret;\
2484 JNI_END
2485 
2486 // the runtime type of subword integral basic types is integer
2487 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2488                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2489                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2490 DEFINE_CALLSTATICMETHODA(jbyte,    Byte,    T_BYTE
2491                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2492                         HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2493 DEFINE_CALLSTATICMETHODA(jchar,    Char,    T_CHAR
2494                         , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2495                         HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2496 DEFINE_CALLSTATICMETHODA(jshort,   Short,   T_SHORT
2497                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2498                         HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2499 
2500 DEFINE_CALLSTATICMETHODA(jobject,  Object,  T_OBJECT
2501                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2502                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2503 DEFINE_CALLSTATICMETHODA(jint,     Int,     T_INT
2504                         , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2505                         HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2506 DEFINE_CALLSTATICMETHODA(jlong,    Long,    T_LONG
2507                         , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2508                         HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2509 // Float and double probes don't return value because dtrace doesn't currently support it
2510 DEFINE_CALLSTATICMETHODA(jfloat,   Float,   T_FLOAT
2511                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2512                         HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2513 DEFINE_CALLSTATICMETHODA(jdouble,  Double,  T_DOUBLE
2514                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2515                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2516 
2517 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2518                          , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2519 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2520                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2521 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2522                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2523 #endif /* USDT2 */
2524 
2525 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2526   JNIWrapper("CallStaticVoidMethod");
2527 #ifndef USDT2
2528   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2529 #else /* USDT2 */
2530   HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2531                                          env, cls, (uintptr_t) methodID);
2532 #endif /* USDT2 */
2533   DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2534 
2535   va_list args;
2536   va_start(args, methodID);
2537   JavaValue jvalue(T_VOID);
2538   JNI_ArgumentPusherVaArg ap(methodID, args);
2539   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2540   va_end(args);
2541 JNI_END
2542 
2543 
2544 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2545   JNIWrapper("CallStaticVoidMethodV");
2546 #ifndef USDT2
2547   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2548 #else /* USDT2 */
2549   HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2550                                           env, cls, (uintptr_t) methodID);
2551 #endif /* USDT2 */
2552   DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2553 
2554   JavaValue jvalue(T_VOID);
2555   JNI_ArgumentPusherVaArg ap(methodID, args);
2556   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2557 JNI_END
2558 
2559 
2560 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2561   JNIWrapper("CallStaticVoidMethodA");
2562 #ifndef USDT2
2563   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2564 #else /* USDT2 */
2565   HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2566                                           env, cls, (uintptr_t) methodID);
2567 #endif /* USDT2 */
2568   DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2569 
2570   JavaValue jvalue(T_VOID);
2571   JNI_ArgumentPusherArray ap(methodID, args);
2572   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2573 JNI_END
2574 
2575 
2576 //
2577 // Accessing Fields
2578 //
2579 
2580 
2581 #ifndef USDT2
2582 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2583 #else /* USDT2 */
2584 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2585                     , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2586 #endif /* USDT2 */
2587 
2588 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2589           const char *name, const char *sig))
2590   JNIWrapper("GetFieldID");
2591 #ifndef USDT2
2592   DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2593 #else /* USDT2 */
2594   HOTSPOT_JNI_GETFIELDID_ENTRY(
2595                                env, clazz, (char *) name, (char *) sig);
2596 #endif /* USDT2 */
2597   jfieldID ret = 0;
2598   DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2599 
2600   // The class should have been loaded (we have an instance of the class
2601   // passed in) so the field and signature should already be in the symbol
2602   // table.  If they're not there, the field doesn't exist.
2603   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2604   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2605   if (fieldname == NULL || signame == NULL) {
2606     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2607   }
2608   KlassHandle k(THREAD,
2609                 java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
2610   // Make sure class is initialized before handing id's out to fields
2611   Klass::cast(k())->initialize(CHECK_NULL);
2612 
2613   fieldDescriptor fd;
2614   if (!Klass::cast(k())->oop_is_instance() ||
2615       !instanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2616     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2617   }
2618 
2619   // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2620   // It may also have hash bits for k, if VerifyJNIFields is turned on.
2621   ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2622   return ret;
2623 JNI_END
2624 
2625 
2626 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2627   JNIWrapper("GetObjectField");
2628 #ifndef USDT2
2629   DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2630 #else /* USDT2 */
2631   HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2632                                    env, obj, (uintptr_t) fieldID);
2633 #endif /* USDT2 */
2634   oop o = JNIHandles::resolve_non_null(obj);
2635   klassOop k = o->klass();
2636   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2637   // Keep JVMTI addition small and only check enabled flag here.
2638   // jni_GetField_probe() assumes that is okay to create handles.
2639   if (JvmtiExport::should_post_field_access()) {
2640     o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2641   }
2642   jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2643 #ifndef SERIALGC
2644   // If G1 is enabled and we are accessing the value of the referent
2645   // field in a reference object then we need to register a non-null
2646   // referent with the SATB barrier.
2647   if (UseG1GC) {
2648     bool needs_barrier = false;
2649 
2650     if (ret != NULL &&
2651         offset == java_lang_ref_Reference::referent_offset &&
2652         instanceKlass::cast(k)->reference_type() != REF_NONE) {
2653       assert(instanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2654       needs_barrier = true;
2655     }
2656 
2657     if (needs_barrier) {
2658       oop referent = JNIHandles::resolve(ret);
2659       G1SATBCardTableModRefBS::enqueue(referent);
2660     }
2661   }
2662 #endif // SERIALGC
2663 #ifndef USDT2
2664   DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2665 #else /* USDT2 */
2666 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2667                                   ret);
2668 #endif /* USDT2 */
2669   return ret;
2670 JNI_END
2671 
2672 
2673 #ifndef USDT2
2674 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2675 \
2676   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2677 \
2678 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2679   JNIWrapper("Get" XSTR(Result) "Field"); \
2680 \
2681   DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2682   Return ret = 0;\
2683   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2684 \
2685   oop o = JNIHandles::resolve_non_null(obj); \
2686   klassOop k = o->klass(); \
2687   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2688   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2689   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2690   /* and creates a ResetNoHandleMark.                                   */ \
2691   if (JvmtiExport::should_post_field_access()) { \
2692     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2693   } \
2694   ret = o->Fieldname##_field(offset); \
2695   return ret; \
2696 JNI_END
2697 
2698 DEFINE_GETFIELD(jboolean, bool,   Boolean)
2699 DEFINE_GETFIELD(jbyte,    byte,   Byte)
2700 DEFINE_GETFIELD(jchar,    char,   Char)
2701 DEFINE_GETFIELD(jshort,   short,  Short)
2702 DEFINE_GETFIELD(jint,     int,    Int)
2703 DEFINE_GETFIELD(jlong,    long,   Long)
2704 DEFINE_GETFIELD(jfloat,   float,  Float)
2705 DEFINE_GETFIELD(jdouble,  double, Double)
2706 
2707 #else /* USDT2 */
2708 
2709 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2710   , EntryProbe, ReturnProbe) \
2711 \
2712   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2713   , ReturnProbe); \
2714 \
2715 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2716   JNIWrapper("Get" XSTR(Result) "Field"); \
2717 \
2718   EntryProbe; \
2719   Return ret = 0;\
2720   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2721 \
2722   oop o = JNIHandles::resolve_non_null(obj); \
2723   klassOop k = o->klass(); \
2724   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2725   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2726   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2727   /* and creates a ResetNoHandleMark.                                   */ \
2728   if (JvmtiExport::should_post_field_access()) { \
2729     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2730   } \
2731   ret = o->Fieldname##_field(offset); \
2732   return ret; \
2733 JNI_END
2734 
2735 DEFINE_GETFIELD(jboolean, bool,   Boolean
2736                 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2737                 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2738 DEFINE_GETFIELD(jbyte,    byte,   Byte
2739                 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2740                 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2741 DEFINE_GETFIELD(jchar,    char,   Char
2742                 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2743                 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2744 DEFINE_GETFIELD(jshort,   short,  Short
2745                 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2746                 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2747 DEFINE_GETFIELD(jint,     int,    Int
2748                 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2749                 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2750 DEFINE_GETFIELD(jlong,    long,   Long
2751                 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2752                 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2753 // Float and double probes don't return value because dtrace doesn't currently support it
2754 DEFINE_GETFIELD(jfloat,   float,  Float
2755                 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2756                 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2757 DEFINE_GETFIELD(jdouble,  double, Double
2758                 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2759                 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2760 #endif /* USDT2 */
2761 
2762 address jni_GetBooleanField_addr() {
2763   return (address)jni_GetBooleanField;
2764 }
2765 address jni_GetByteField_addr() {
2766   return (address)jni_GetByteField;
2767 }
2768 address jni_GetCharField_addr() {
2769   return (address)jni_GetCharField;
2770 }
2771 address jni_GetShortField_addr() {
2772   return (address)jni_GetShortField;
2773 }
2774 address jni_GetIntField_addr() {
2775   return (address)jni_GetIntField;
2776 }
2777 address jni_GetLongField_addr() {
2778   return (address)jni_GetLongField;
2779 }
2780 address jni_GetFloatField_addr() {
2781   return (address)jni_GetFloatField;
2782 }
2783 address jni_GetDoubleField_addr() {
2784   return (address)jni_GetDoubleField;
2785 }
2786 
2787 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2788   JNIWrapper("SetObjectField");
2789 #ifndef USDT2
2790   DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2791 #else /* USDT2 */
2792   HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2793                                    env, obj, (uintptr_t) fieldID, value);
2794 #endif /* USDT2 */
2795   oop o = JNIHandles::resolve_non_null(obj);
2796   klassOop k = o->klass();
2797   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2798   // Keep JVMTI addition small and only check enabled flag here.
2799   // jni_SetField_probe_nh() assumes that is not okay to create handles
2800   // and creates a ResetNoHandleMark.
2801   if (JvmtiExport::should_post_field_modification()) {
2802     jvalue field_value;
2803     field_value.l = value;
2804     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2805   }
2806   o->obj_field_put(offset, JNIHandles::resolve(value));
2807 #ifndef USDT2
2808   DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2809 #else /* USDT2 */
2810   HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2811 );
2812 #endif /* USDT2 */
2813 JNI_END
2814 
2815 #ifndef USDT2
2816 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2817 \
2818 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2819   JNIWrapper("Set" XSTR(Result) "Field"); \
2820 \
2821   HS_DTRACE_PROBE_CDECL_N(hotspot_jni, Set##Result##Field__entry, \
2822     ( JNIEnv*, jobject, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \
2823   HS_DTRACE_PROBE_N(hotspot_jni, Set##Result##Field__entry, \
2824     ( env, obj, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \
2825 \
2826   oop o = JNIHandles::resolve_non_null(obj); \
2827   klassOop k = o->klass(); \
2828   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2829   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2830   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2831   /* and creates a ResetNoHandleMark.                                   */ \
2832   if (JvmtiExport::should_post_field_modification()) { \
2833     jvalue field_value; \
2834     field_value.unionType = value; \
2835     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2836   } \
2837   o->Fieldname##_field_put(offset, value); \
2838   DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2839 JNI_END
2840 
2841 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z)
2842 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b)
2843 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c)
2844 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s)
2845 DEFINE_SETFIELD(jint,     int,    Int,     'I', i)
2846 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j)
2847 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f)
2848 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d)
2849 
2850 #else /* USDT2 */
2851 
2852 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2853                         , EntryProbe, ReturnProbe) \
2854 \
2855 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2856   JNIWrapper("Set" XSTR(Result) "Field"); \
2857 \
2858   EntryProbe; \
2859 \
2860   oop o = JNIHandles::resolve_non_null(obj); \
2861   klassOop k = o->klass(); \
2862   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2863   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2864   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2865   /* and creates a ResetNoHandleMark.                                   */ \
2866   if (JvmtiExport::should_post_field_modification()) { \
2867     jvalue field_value; \
2868     field_value.unionType = value; \
2869     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2870   } \
2871   o->Fieldname##_field_put(offset, value); \
2872   ReturnProbe; \
2873 JNI_END
2874 
2875 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z
2876                 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2877                 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2878 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b
2879                 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2880                 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2881 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c
2882                 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2883                 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2884 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s
2885                 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2886                 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2887 DEFINE_SETFIELD(jint,     int,    Int,     'I', i
2888                 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2889                 HOTSPOT_JNI_SETINTFIELD_RETURN())
2890 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j
2891                 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2892                 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2893 // Float and double probes don't return value because dtrace doesn't currently support it
2894 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f
2895                 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2896                 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2897 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d
2898                 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2899                 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2900 #endif /* USDT2 */
2901 
2902 #ifndef USDT2
2903 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2904 #else /* USDT2 */
2905 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2906                     , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2907 #endif /* USDT2 */
2908 
2909 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2910   JNIWrapper("ToReflectedField");
2911 #ifndef USDT2
2912   DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2913                 env, cls, fieldID, isStatic);
2914 #else /* USDT2 */
2915   HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2916                 env, cls, (uintptr_t) fieldID, isStatic);
2917 #endif /* USDT2 */
2918   jobject ret = NULL;
2919   DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2920 
2921   fieldDescriptor fd;
2922   bool found = false;
2923   klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls));
2924 
2925   assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2926 
2927   if (isStatic) {
2928     // Static field. The fieldID a JNIid specifying the field holder and the offset within the klassOop.
2929     JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2930     assert(id->is_static_field_id(), "invalid static field id");
2931     found = id->find_local_field(&fd);
2932   } else {
2933     // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2934     int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2935     found = instanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2936   }
2937   assert(found, "bad fieldID passed into jni_ToReflectedField");
2938   oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2939   ret = JNIHandles::make_local(env, reflected);
2940   return ret;
2941 JNI_END
2942 
2943 
2944 //
2945 // Accessing Static Fields
2946 //
2947 #ifndef USDT2
2948 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2949 #else /* USDT2 */
2950 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2951                     , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2952 #endif /* USDT2 */
2953 
2954 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2955           const char *name, const char *sig))
2956   JNIWrapper("GetStaticFieldID");
2957 #ifndef USDT2
2958   DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2959 #else /* USDT2 */
2960   HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2961                                      env, clazz, (char *) name, (char *) sig);
2962 #endif /* USDT2 */
2963   jfieldID ret = NULL;
2964   DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2965 
2966   // The class should have been loaded (we have an instance of the class
2967   // passed in) so the field and signature should already be in the symbol
2968   // table.  If they're not there, the field doesn't exist.
2969   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2970   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2971   if (fieldname == NULL || signame == NULL) {
2972     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2973   }
2974   KlassHandle k(THREAD,
2975                 java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
2976   // Make sure class is initialized before handing id's out to static fields
2977   Klass::cast(k())->initialize(CHECK_NULL);
2978 
2979   fieldDescriptor fd;
2980   if (!Klass::cast(k())->oop_is_instance() ||
2981       !instanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2982     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2983   }
2984 
2985   // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the klassOop
2986   JNIid* id = instanceKlass::cast(fd.field_holder())->jni_id_for(fd.offset());
2987   debug_only(id->set_is_static_field_id();)
2988 
2989   debug_only(id->verify(fd.field_holder()));
2990 
2991   ret = jfieldIDWorkaround::to_static_jfieldID(id);
2992   return ret;
2993 JNI_END
2994 
2995 
2996 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2997   JNIWrapper("GetStaticObjectField");
2998 #ifndef USDT2
2999   DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
3000 #else /* USDT2 */
3001   HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
3002                                          env, clazz, (uintptr_t) fieldID);
3003 #endif /* USDT2 */
3004 #ifndef JNICHECK_KERNEL
3005   DEBUG_ONLY(klassOop param_k = jniCheck::validate_class(thread, clazz);)
3006 #endif // JNICHECK_KERNEL
3007   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3008   assert(id->is_static_field_id(), "invalid static field id");
3009   // Keep JVMTI addition small and only check enabled flag here.
3010   // jni_GetField_probe() assumes that is okay to create handles.
3011   if (JvmtiExport::should_post_field_access()) {
3012     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
3013   }
3014   jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
3015 #ifndef USDT2
3016   DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
3017 #else /* USDT2 */
3018   HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
3019                                           ret);
3020 #endif /* USDT2 */
3021   return ret;
3022 JNI_END
3023 
3024 #ifndef USDT2
3025 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
3026 \
3027   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
3028 \
3029 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3030   JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3031   DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3032   Return ret = 0;\
3033   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3034                      (const Return&)ret);\
3035   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3036   assert(id->is_static_field_id(), "invalid static field id"); \
3037   /* Keep JVMTI addition small and only check enabled flag here. */ \
3038   /* jni_GetField_probe() assumes that is okay to create handles. */ \
3039   if (JvmtiExport::should_post_field_access()) { \
3040     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3041   } \
3042   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3043   return ret;\
3044 JNI_END
3045 
3046 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean)
3047 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte)
3048 DEFINE_GETSTATICFIELD(jchar,    char,   Char)
3049 DEFINE_GETSTATICFIELD(jshort,   short,  Short)
3050 DEFINE_GETSTATICFIELD(jint,     int,    Int)
3051 DEFINE_GETSTATICFIELD(jlong,    long,   Long)
3052 DEFINE_GETSTATICFIELD(jfloat,   float,  Float)
3053 DEFINE_GETSTATICFIELD(jdouble,  double, Double)
3054 
3055 #else /* USDT2 */
3056 
3057 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3058                               , EntryProbe, ReturnProbe) \
3059 \
3060   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3061                           , ReturnProbe);                                          \
3062 \
3063 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3064   JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3065   EntryProbe; \
3066   Return ret = 0;\
3067   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3068                      (const Return&)ret);\
3069   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3070   assert(id->is_static_field_id(), "invalid static field id"); \
3071   /* Keep JVMTI addition small and only check enabled flag here. */ \
3072   /* jni_GetField_probe() assumes that is okay to create handles. */ \
3073   if (JvmtiExport::should_post_field_access()) { \
3074     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3075   } \
3076   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3077   return ret;\
3078 JNI_END
3079 
3080 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean
3081                       , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3082 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte
3083                       , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref)   )
3084 DEFINE_GETSTATICFIELD(jchar,    char,   Char
3085                       , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref)   )
3086 DEFINE_GETSTATICFIELD(jshort,   short,  Short
3087                       , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref)  )
3088 DEFINE_GETSTATICFIELD(jint,     int,    Int
3089                       , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),     HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref)    )
3090 DEFINE_GETSTATICFIELD(jlong,    long,   Long
3091                       , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref)   )
3092 // Float and double probes don't return value because dtrace doesn't currently support it
3093 DEFINE_GETSTATICFIELD(jfloat,   float,  Float
3094                       , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN()          )
3095 DEFINE_GETSTATICFIELD(jdouble,  double, Double
3096                       , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),  HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN()         )
3097 #endif /* USDT2 */
3098 
3099 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3100   JNIWrapper("SetStaticObjectField");
3101 #ifndef USDT2
3102   DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3103 #else /* USDT2 */
3104  HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3105                                         env, clazz, (uintptr_t) fieldID, value);
3106 #endif /* USDT2 */
3107   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3108   assert(id->is_static_field_id(), "invalid static field id");
3109   // Keep JVMTI addition small and only check enabled flag here.
3110   // jni_SetField_probe() assumes that is okay to create handles.
3111   if (JvmtiExport::should_post_field_modification()) {
3112     jvalue field_value;
3113     field_value.l = value;
3114     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3115   }
3116   id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3117 #ifndef USDT2
3118   DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3119 #else /* USDT2 */
3120   HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3121                                           );
3122 #endif /* USDT2 */
3123 JNI_END
3124 
3125 
3126 #ifndef USDT2
3127 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3128 \
3129 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3130   JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3131   HS_DTRACE_PROBE_CDECL_N(hotspot_jni, SetStatic##Result##Field__entry,\
3132     ( JNIEnv*, jclass, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \
3133   HS_DTRACE_PROBE_N(hotspot_jni, SetStatic##Result##Field__entry, \
3134     ( env, clazz, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \
3135 \
3136   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3137   assert(id->is_static_field_id(), "invalid static field id"); \
3138   /* Keep JVMTI addition small and only check enabled flag here. */ \
3139   /* jni_SetField_probe() assumes that is okay to create handles. */ \
3140   if (JvmtiExport::should_post_field_modification()) { \
3141     jvalue field_value; \
3142     field_value.unionType = value; \
3143     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3144   } \
3145   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3146   DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3147 JNI_END
3148 
3149 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z)
3150 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b)
3151 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c)
3152 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s)
3153 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i)
3154 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j)
3155 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f)
3156 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d)
3157 
3158 #else /* USDT2 */
3159 
3160 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3161                               , EntryProbe, ReturnProbe) \
3162 \
3163 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3164   JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3165   EntryProbe; \
3166 \
3167   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3168   assert(id->is_static_field_id(), "invalid static field id"); \
3169   /* Keep JVMTI addition small and only check enabled flag here. */ \
3170   /* jni_SetField_probe() assumes that is okay to create handles. */ \
3171   if (JvmtiExport::should_post_field_modification()) { \
3172     jvalue field_value; \
3173     field_value.unionType = value; \
3174     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3175   } \
3176   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3177   ReturnProbe;\
3178 JNI_END
3179 
3180 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z
3181                       , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3182                       HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3183 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b
3184                       , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3185                       HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3186 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c
3187                       , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3188                       HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3189 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s
3190                       , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3191                       HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3192 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i
3193                       , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3194                       HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3195 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j
3196                       , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3197                       HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3198 // Float and double probes don't return value because dtrace doesn't currently support it
3199 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f
3200                       , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3201                       HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3202 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d
3203                       , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3204                       HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3205 #endif /* USDT2 */
3206 
3207 //
3208 // String Operations
3209 //
3210 
3211 // Unicode Interface
3212 
3213 #ifndef USDT2
3214 DT_RETURN_MARK_DECL(NewString, jstring);
3215 #else /* USDT2 */
3216 DT_RETURN_MARK_DECL(NewString, jstring
3217                     , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3218 #endif /* USDT2 */
3219 
3220 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3221   JNIWrapper("NewString");
3222 #ifndef USDT2
3223   DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3224 #else /* USDT2 */
3225  HOTSPOT_JNI_NEWSTRING_ENTRY(
3226                              env, (uint16_t *) unicodeChars, len);
3227 #endif /* USDT2 */
3228   jstring ret = NULL;
3229   DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3230   oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3231   ret = (jstring) JNIHandles::make_local(env, string);
3232   return ret;
3233 JNI_END
3234 
3235 
3236 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3237   JNIWrapper("GetStringLength");
3238 #ifndef USDT2
3239   DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3240 #else /* USDT2 */
3241   HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3242                                     env, string);
3243 #endif /* USDT2 */
3244   jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
3245 #ifndef USDT2
3246   DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3247 #else /* USDT2 */
3248  HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3249                                     ret);
3250 #endif /* USDT2 */
3251   return ret;
3252 JNI_END
3253 
3254 
3255 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3256   JNIEnv *env, jstring string, jboolean *isCopy))
3257   JNIWrapper("GetStringChars");
3258 #ifndef USDT2
3259   DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3260 #else /* USDT2 */
3261  HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3262                                   env, string, (uintptr_t *) isCopy);
3263 #endif /* USDT2 */
3264   //%note jni_5
3265   if (isCopy != NULL) {
3266     *isCopy = JNI_TRUE;
3267   }
3268   oop s = JNIHandles::resolve_non_null(string);
3269   int s_len = java_lang_String::length(s);
3270   typeArrayOop s_value = java_lang_String::value(s);
3271   int s_offset = java_lang_String::offset(s);
3272   jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1);  // add one for zero termination
3273   if (s_len > 0) {
3274     memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3275   }
3276   buf[s_len] = 0;
3277 #ifndef USDT2
3278   DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3279 #else /* USDT2 */
3280   HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3281                                     buf);
3282 #endif /* USDT2 */
3283   return buf;
3284 JNI_END
3285 
3286 
3287 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3288   JNIWrapper("ReleaseStringChars");
3289 #ifndef USDT2
3290   DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3291 #else /* USDT2 */
3292   HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3293                                        env, str, (uint16_t *) chars);
3294 #endif /* USDT2 */
3295   //%note jni_6
3296   if (chars != NULL) {
3297     // Since String objects are supposed to be immutable, don't copy any
3298     // new data back.  A bad user will have to go after the char array.
3299     FreeHeap((void*) chars);
3300   }
3301 #ifndef USDT2
3302   DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3303 #else /* USDT2 */
3304   HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3305 );
3306 #endif /* USDT2 */
3307 JNI_END
3308 
3309 
3310 // UTF Interface
3311 
3312 #ifndef USDT2
3313 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3314 #else /* USDT2 */
3315 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3316                     , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3317 #endif /* USDT2 */
3318 
3319 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3320   JNIWrapper("NewStringUTF");
3321 #ifndef USDT2
3322   DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3323 #else /* USDT2 */
3324   HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3325                                  env, (char *) bytes);
3326 #endif /* USDT2 */
3327   jstring ret;
3328   DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3329 
3330   oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3331   ret = (jstring) JNIHandles::make_local(env, result);
3332   return ret;
3333 JNI_END
3334 
3335 
3336 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3337   JNIWrapper("GetStringUTFLength");
3338 #ifndef USDT2
3339   DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3340 #else /* USDT2 */
3341  HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3342                                       env, string);
3343 #endif /* USDT2 */
3344   jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
3345 #ifndef USDT2
3346   DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3347 #else /* USDT2 */
3348   HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3349                                         ret);
3350 #endif /* USDT2 */
3351   return ret;
3352 JNI_END
3353 
3354 
3355 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3356   JNIWrapper("GetStringUTFChars");
3357 #ifndef USDT2
3358   DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3359 #else /* USDT2 */
3360  HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3361                                      env, string, (uintptr_t *) isCopy);
3362 #endif /* USDT2 */
3363   oop java_string = JNIHandles::resolve_non_null(string);
3364   size_t length = java_lang_String::utf8_length(java_string);
3365   char* result = AllocateHeap(length + 1, "GetStringUTFChars");
3366   java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3367   if (isCopy != NULL) *isCopy = JNI_TRUE;
3368 #ifndef USDT2
3369   DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3370 #else /* USDT2 */
3371  HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3372                                       result);
3373 #endif /* USDT2 */
3374   return result;
3375 JNI_END
3376 
3377 
3378 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3379   JNIWrapper("ReleaseStringUTFChars");
3380 #ifndef USDT2
3381   DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3382 #else /* USDT2 */
3383  HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3384                                          env, str, (char *) chars);
3385 #endif /* USDT2 */
3386   if (chars != NULL) {
3387     FreeHeap((char*) chars);
3388   }
3389 #ifndef USDT2
3390   DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3391 #else /* USDT2 */
3392 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3393 );
3394 #endif /* USDT2 */
3395 JNI_END
3396 
3397 
3398 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3399   JNIWrapper("GetArrayLength");
3400 #ifndef USDT2
3401   DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3402 #else /* USDT2 */
3403  HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3404                                   env, array);
3405 #endif /* USDT2 */
3406   arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3407   assert(a->is_array(), "must be array");
3408   jsize ret = a->length();
3409 #ifndef USDT2
3410   DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3411 #else /* USDT2 */
3412  HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3413                                    ret);
3414 #endif /* USDT2 */
3415   return ret;
3416 JNI_END
3417 
3418 
3419 //
3420 // Object Array Operations
3421 //
3422 
3423 #ifndef USDT2
3424 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3425 #else /* USDT2 */
3426 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3427                     , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3428 #endif /* USDT2 */
3429 
3430 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3431   JNIWrapper("NewObjectArray");
3432 #ifndef USDT2
3433   DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3434 #else /* USDT2 */
3435  HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3436                                   env, length, elementClass, initialElement);
3437 #endif /* USDT2 */
3438   jobjectArray ret = NULL;
3439   DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3440   KlassHandle ek(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(elementClass)));
3441   klassOop ako = Klass::cast(ek())->array_klass(CHECK_NULL);
3442   KlassHandle ak = KlassHandle(THREAD, ako);
3443   objArrayKlass::cast(ak())->initialize(CHECK_NULL);
3444   objArrayOop result = objArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3445   oop initial_value = JNIHandles::resolve(initialElement);
3446   if (initial_value != NULL) {  // array already initialized with NULL
3447     for (int index = 0; index < length; index++) {
3448       result->obj_at_put(index, initial_value);
3449     }
3450   }
3451   ret = (jobjectArray) JNIHandles::make_local(env, result);
3452   return ret;
3453 JNI_END
3454 
3455 #ifndef USDT2
3456 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3457 #else /* USDT2 */
3458 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3459                     , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3460 #endif /* USDT2 */
3461 
3462 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3463   JNIWrapper("GetObjectArrayElement");
3464 #ifndef USDT2
3465   DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3466 #else /* USDT2 */
3467  HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3468                                          env, array, index);
3469 #endif /* USDT2 */
3470   jobject ret = NULL;
3471   DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3472   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3473   if (a->is_within_bounds(index)) {
3474     ret = JNIHandles::make_local(env, a->obj_at(index));
3475     return ret;
3476   } else {
3477     char buf[jintAsStringSize];
3478     sprintf(buf, "%d", index);
3479     THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3480   }
3481 JNI_END
3482 
3483 #ifndef USDT2
3484 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3485 #else /* USDT2 */
3486 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3487                          , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3488 #endif /* USDT2 */
3489 
3490 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3491   JNIWrapper("SetObjectArrayElement");
3492 #ifndef USDT2
3493   DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3494 #else /* USDT2 */
3495  HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3496                                          env, array, index, value);
3497 #endif /* USDT2 */
3498   DT_VOID_RETURN_MARK(SetObjectArrayElement);
3499 
3500   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3501   oop v = JNIHandles::resolve(value);
3502   if (a->is_within_bounds(index)) {
3503     if (v == NULL || v->is_a(objArrayKlass::cast(a->klass())->element_klass())) {
3504       a->obj_at_put(index, v);
3505     } else {
3506       THROW(vmSymbols::java_lang_ArrayStoreException());
3507     }
3508   } else {
3509     char buf[jintAsStringSize];
3510     sprintf(buf, "%d", index);
3511     THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3512   }
3513 JNI_END
3514 
3515 
3516 #ifndef USDT2
3517 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3518 \
3519   DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3520 \
3521 JNI_ENTRY(Return, \
3522           jni_New##Result##Array(JNIEnv *env, jsize len)) \
3523   JNIWrapper("New" XSTR(Result) "Array"); \
3524   DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3525   Return ret = NULL;\
3526   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3527 \
3528   oop obj= oopFactory::Allocator(len, CHECK_0); \
3529   ret = (Return) JNIHandles::make_local(env, obj); \
3530   return ret;\
3531 JNI_END
3532 
3533 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean)
3534 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte)
3535 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short)
3536 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char)
3537 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int)
3538 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long)
3539 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float)
3540 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double)
3541 
3542 #else /* USDT2 */
3543 
3544 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3545                               ,EntryProbe,ReturnProbe)  \
3546 \
3547   DT_RETURN_MARK_DECL(New##Result##Array, Return \
3548                       , ReturnProbe); \
3549 \
3550 JNI_ENTRY(Return, \
3551           jni_New##Result##Array(JNIEnv *env, jsize len)) \
3552   JNIWrapper("New" XSTR(Result) "Array"); \
3553   EntryProbe; \
3554   Return ret = NULL;\
3555   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3556 \
3557   oop obj= oopFactory::Allocator(len, CHECK_0); \
3558   ret = (Return) JNIHandles::make_local(env, obj); \
3559   return ret;\
3560 JNI_END
3561 
3562 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean,
3563                       HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3564                       HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3565 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte,
3566                       HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3567                       HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3568 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short,
3569                       HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3570                       HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3571 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char,
3572                       HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3573                       HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3574 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int,
3575                       HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3576                       HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3577 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long,
3578                       HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3579                       HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3580 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float,
3581                       HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3582                       HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3583 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double,
3584                       HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3585                       HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3586 #endif /* USDT2 */
3587 
3588 // Return an address which will fault if the caller writes to it.
3589 
3590 static char* get_bad_address() {
3591   static char* bad_address = NULL;
3592   if (bad_address == NULL) {
3593     size_t size = os::vm_allocation_granularity();
3594     bad_address = os::reserve_memory(size);
3595     if (bad_address != NULL) {
3596       os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3597                          /*is_committed*/false);
3598     }
3599   }
3600   return bad_address;
3601 }
3602 
3603 
3604 #ifndef USDT2
3605 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3606 \
3607 JNI_QUICK_ENTRY(ElementType*, \
3608           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3609   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3610   DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3611   /* allocate an chunk of memory in c land */ \
3612   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3613   ElementType* result; \
3614   int len = a->length(); \
3615   if (len == 0) { \
3616     /* Empty array: legal but useless, can't return NULL. \
3617      * Return a pointer to something useless. \
3618      * Avoid asserts in typeArrayOop. */ \
3619     result = (ElementType*)get_bad_address(); \
3620   } else { \
3621     result = NEW_C_HEAP_ARRAY(ElementType, len); \
3622     /* copy the array to the c chunk */ \
3623     memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3624   } \
3625   if (isCopy) *isCopy = JNI_TRUE; \
3626   DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3627   return result; \
3628 JNI_END
3629 
3630 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3631 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte)
3632 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short)
3633 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char)
3634 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int)
3635 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long)
3636 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float)
3637 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double)
3638 
3639 #else /* USDT2 */
3640 
3641 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3642                                       , EntryProbe, ReturnProbe) \
3643 \
3644 JNI_QUICK_ENTRY(ElementType*, \
3645           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3646   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3647   EntryProbe; \
3648   /* allocate an chunk of memory in c land */ \
3649   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3650   ElementType* result; \
3651   int len = a->length(); \
3652   if (len == 0) { \
3653     /* Empty array: legal but useless, can't return NULL. \
3654      * Return a pointer to something useless. \
3655      * Avoid asserts in typeArrayOop. */ \
3656     result = (ElementType*)get_bad_address(); \
3657   } else { \
3658     result = NEW_C_HEAP_ARRAY(ElementType, len); \
3659     /* copy the array to the c chunk */ \
3660     memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3661   } \
3662   if (isCopy) *isCopy = JNI_TRUE; \
3663   ReturnProbe; \
3664   return result; \
3665 JNI_END
3666 
3667 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3668                               , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3669                               HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3670 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte
3671                               , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3672                               HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3673 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short
3674                               , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3675                               HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3676 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char
3677                               , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3678                               HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3679 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int
3680                               , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3681                               HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3682 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long
3683                               , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3684                               HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3685 // Float and double probes don't return value because dtrace doesn't currently support it
3686 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float
3687                               , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3688                               HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3689 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double
3690                               , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3691                               HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3692 #endif /* USDT2 */
3693 
3694 #ifndef USDT2
3695 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3696 \
3697 JNI_QUICK_ENTRY(void, \
3698           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3699                                              ElementType *buf, jint mode)) \
3700   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3701   DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3702   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3703   int len = a->length(); \
3704   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \
3705     if ((mode == 0) || (mode == JNI_COMMIT)) { \
3706       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3707     } \
3708     if ((mode == 0) || (mode == JNI_ABORT)) { \
3709       FreeHeap(buf); \
3710     } \
3711   } \
3712   DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3713 JNI_END
3714 
3715 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3716 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte)
3717 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short)
3718 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char)
3719 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int)
3720 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long)
3721 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float)
3722 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double)
3723 
3724 #else /* USDT2 */
3725 
3726 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3727                                           , EntryProbe, ReturnProbe);\
3728 \
3729 JNI_QUICK_ENTRY(void, \
3730           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3731                                              ElementType *buf, jint mode)) \
3732   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3733   EntryProbe; \
3734   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3735   int len = a->length(); \
3736   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \
3737     if ((mode == 0) || (mode == JNI_COMMIT)) { \
3738       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3739     } \
3740     if ((mode == 0) || (mode == JNI_ABORT)) { \
3741       FreeHeap(buf); \
3742     } \
3743   } \
3744   ReturnProbe; \
3745 JNI_END
3746 
3747 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3748                                   , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3749                                   HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3750 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte
3751                                   , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3752                                   HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3753 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short
3754                                   ,  HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3755                                   HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3756 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char
3757                                   ,  HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3758                                   HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3759 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int
3760                                   , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3761                                   HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3762 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long
3763                                   , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3764                                   HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3765 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float
3766                                   , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3767                                   HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3768 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double
3769                                   , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3770                                   HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3771 #endif /* USDT2 */
3772 
3773 #ifndef USDT2
3774 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3775   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3776 \
3777 JNI_ENTRY(void, \
3778 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3779              jsize len, ElementType *buf)) \
3780   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3781   DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3782   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3783   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3784   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3785     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3786   } else { \
3787     if (len > 0) { \
3788       int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \
3789       memcpy((u_char*) buf, \
3790              (u_char*) src->Tag##_at_addr(start), \
3791              len << sc);                          \
3792     } \
3793   } \
3794 JNI_END
3795 
3796 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3797 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte)
3798 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short)
3799 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char)
3800 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int)
3801 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long)
3802 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float)
3803 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double)
3804 
3805 #else /* USDT2 */
3806 
3807 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3808                                     , EntryProbe, ReturnProbe); \
3809   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3810                            , ReturnProbe); \
3811 \
3812 JNI_ENTRY(void, \
3813 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3814              jsize len, ElementType *buf)) \
3815   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3816   EntryProbe; \
3817   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3818   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3819   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3820     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3821   } else { \
3822     if (len > 0) { \
3823       int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \
3824       memcpy((u_char*) buf, \
3825              (u_char*) src->Tag##_at_addr(start), \
3826              len << sc);                          \
3827     } \
3828   } \
3829 JNI_END
3830 
3831 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3832                             , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3833                             HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3834 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte
3835                             ,  HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3836                             HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3837 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short
3838                             , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3839                             HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3840 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char
3841                             ,  HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3842                             HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3843 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int
3844                             , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3845                             HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3846 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long
3847                             ,  HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3848                             HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3849 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float
3850                             , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3851                             HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3852 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double
3853                             , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3854                             HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3855 #endif /* USDT2 */
3856 
3857 #ifndef USDT2
3858 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3859   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3860 \
3861 JNI_ENTRY(void, \
3862 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3863              jsize len, const ElementType *buf)) \
3864   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3865   DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3866   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3867   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3868   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3869     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3870   } else { \
3871     if (len > 0) { \
3872       int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \
3873       memcpy((u_char*) dst->Tag##_at_addr(start), \
3874              (u_char*) buf, \
3875              len << sc);    \
3876     } \
3877   } \
3878 JNI_END
3879 
3880 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3881 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte)
3882 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short)
3883 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char)
3884 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int)
3885 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long)
3886 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float)
3887 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double)
3888 
3889 #else /* USDT2 */
3890 
3891 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3892                                     , EntryProbe, ReturnProbe); \
3893   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3894                            ,ReturnProbe);           \
3895 \
3896 JNI_ENTRY(void, \
3897 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3898              jsize len, const ElementType *buf)) \
3899   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3900   EntryProbe; \
3901   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3902   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3903   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3904     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3905   } else { \
3906     if (len > 0) { \
3907       int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \
3908       memcpy((u_char*) dst->Tag##_at_addr(start), \
3909              (u_char*) buf, \
3910              len << sc);    \
3911     } \
3912   } \
3913 JNI_END
3914 
3915 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3916                             , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3917                             HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3918 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte
3919                             , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3920                             HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3921 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short
3922                             , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3923                             HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3924 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char
3925                             , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3926                             HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3927 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int
3928                             , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3929                             HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3930 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long
3931                             , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3932                             HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3933 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float
3934                             , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3935                             HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3936 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double
3937                             , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3938                             HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3939 #endif /* USDT2 */
3940 
3941 
3942 //
3943 // Interception of natives
3944 //
3945 
3946 // The RegisterNatives call being attempted tried to register with a method that
3947 // is not native.  Ask JVM TI what prefixes have been specified.  Then check
3948 // to see if the native method is now wrapped with the prefixes.  See the
3949 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3950 static methodOop find_prefixed_native(KlassHandle k,
3951                                       Symbol* name, Symbol* signature, TRAPS) {
3952   ResourceMark rm(THREAD);
3953   methodOop method;
3954   int name_len = name->utf8_length();
3955   char* name_str = name->as_utf8();
3956   int prefix_count;
3957   char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3958   for (int i = 0; i < prefix_count; i++) {
3959     char* prefix = prefixes[i];
3960     int prefix_len = (int)strlen(prefix);
3961 
3962     // try adding this prefix to the method name and see if it matches another method name
3963     int trial_len = name_len + prefix_len;
3964     char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3965     strcpy(trial_name_str, prefix);
3966     strcat(trial_name_str, name_str);
3967     TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3968     if (trial_name == NULL) {
3969       continue; // no such symbol, so this prefix wasn't used, try the next prefix
3970     }
3971     method = Klass::cast(k())->lookup_method(trial_name, signature);
3972     if (method == NULL) {
3973       continue; // signature doesn't match, try the next prefix
3974     }
3975     if (method->is_native()) {
3976       method->set_is_prefixed_native();
3977       return method; // wahoo, we found a prefixed version of the method, return it
3978     }
3979     // found as non-native, so prefix is good, add it, probably just need more prefixes
3980     name_len = trial_len;
3981     name_str = trial_name_str;
3982   }
3983   return NULL; // not found
3984 }
3985 
3986 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3987   methodOop method = Klass::cast(k())->lookup_method(name, signature);
3988   if (method == NULL) {
3989     ResourceMark rm;
3990     stringStream st;
3991     st.print("Method %s name or signature does not match",
3992              methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
3993     THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3994   }
3995   if (!method->is_native()) {
3996     // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3997     method = find_prefixed_native(k, name, signature, THREAD);
3998     if (method == NULL) {
3999       ResourceMark rm;
4000       stringStream st;
4001       st.print("Method %s is not declared as native",
4002                methodOopDesc::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
4003       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
4004     }
4005   }
4006 
4007   if (entry != NULL) {
4008     method->set_native_function(entry,
4009       methodOopDesc::native_bind_event_is_interesting);
4010   } else {
4011     method->clear_native_function();
4012   }
4013   if (PrintJNIResolving) {
4014     ResourceMark rm(THREAD);
4015     tty->print_cr("[Registering JNI native method %s.%s]",
4016       Klass::cast(method->method_holder())->external_name(),
4017       method->name()->as_C_string());
4018   }
4019   return true;
4020 }
4021 
4022 #ifndef USDT2
4023 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4024 #else /* USDT2 */
4025 DT_RETURN_MARK_DECL(RegisterNatives, jint
4026                     , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4027 #endif /* USDT2 */
4028 
4029 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4030                                     const JNINativeMethod *methods,
4031                                     jint nMethods))
4032   JNIWrapper("RegisterNatives");
4033 #ifndef USDT2
4034   DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4035 #else /* USDT2 */
4036   HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4037                                     env, clazz, (void *) methods, nMethods);
4038 #endif /* USDT2 */
4039   jint ret = 0;
4040   DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4041 
4042   KlassHandle h_k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz)));
4043 
4044   for (int index = 0; index < nMethods; index++) {
4045     const char* meth_name = methods[index].name;
4046     const char* meth_sig = methods[index].signature;
4047     int meth_name_len = (int)strlen(meth_name);
4048 
4049     // The class should have been loaded (we have an instance of the class
4050     // passed in) so the method and signature should already be in the symbol
4051     // table.  If they're not there, the method doesn't exist.
4052     TempNewSymbol  name = SymbolTable::probe(meth_name, meth_name_len);
4053     TempNewSymbol  signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4054 
4055     if (name == NULL || signature == NULL) {
4056       ResourceMark rm;
4057       stringStream st;
4058       st.print("Method %s.%s%s not found", Klass::cast(h_k())->external_name(), meth_name, meth_sig);
4059       // Must return negative value on failure
4060       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4061     }
4062 
4063     bool res = register_native(h_k, name, signature,
4064                                (address) methods[index].fnPtr, THREAD);
4065     if (!res) {
4066       ret = -1;
4067       break;
4068     }
4069   }
4070   return ret;
4071 JNI_END
4072 
4073 
4074 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4075   JNIWrapper("UnregisterNatives");
4076 #ifndef USDT2
4077   DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4078 #else /* USDT2 */
4079  HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4080                                      env, clazz);
4081 #endif /* USDT2 */
4082   klassOop k   = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(clazz));
4083   //%note jni_2
4084   if (Klass::cast(k)->oop_is_instance()) {
4085     for (int index = 0; index < instanceKlass::cast(k)->methods()->length(); index++) {
4086       methodOop m = methodOop(instanceKlass::cast(k)->methods()->obj_at(index));
4087       if (m->is_native()) {
4088         m->clear_native_function();
4089         m->set_signature_handler(NULL);
4090       }
4091     }
4092   }
4093 #ifndef USDT2
4094   DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4095 #else /* USDT2 */
4096  HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4097                                       0);
4098 #endif /* USDT2 */
4099   return 0;
4100 JNI_END
4101 
4102 //
4103 // Monitor functions
4104 //
4105 
4106 #ifndef USDT2
4107 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4108 #else /* USDT2 */
4109 DT_RETURN_MARK_DECL(MonitorEnter, jint
4110                     , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4111 #endif /* USDT2 */
4112 
4113 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4114 #ifndef USDT2
4115   DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4116 #else /* USDT2 */
4117  HOTSPOT_JNI_MONITORENTER_ENTRY(
4118                                 env, jobj);
4119 #endif /* USDT2 */
4120   jint ret = JNI_ERR;
4121   DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4122 
4123   // If the object is null, we can't do anything with it
4124   if (jobj == NULL) {
4125     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4126   }
4127 
4128   Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4129   ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4130   ret = JNI_OK;
4131   return ret;
4132 JNI_END
4133 
4134 #ifndef USDT2
4135 DT_RETURN_MARK_DECL(MonitorExit, jint);
4136 #else /* USDT2 */
4137 DT_RETURN_MARK_DECL(MonitorExit, jint
4138                     , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4139 #endif /* USDT2 */
4140 
4141 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4142 #ifndef USDT2
4143   DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4144 #else /* USDT2 */
4145  HOTSPOT_JNI_MONITOREXIT_ENTRY(
4146                                env, jobj);
4147 #endif /* USDT2 */
4148   jint ret = JNI_ERR;
4149   DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4150 
4151   // Don't do anything with a null object
4152   if (jobj == NULL) {
4153     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4154   }
4155 
4156   Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4157   ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4158 
4159   ret = JNI_OK;
4160   return ret;
4161 JNI_END
4162 
4163 //
4164 // Extensions
4165 //
4166 
4167 #ifndef USDT2
4168 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4169 #else /* USDT2 */
4170 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4171                          , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4172 #endif /* USDT2 */
4173 
4174 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4175   JNIWrapper("GetStringRegion");
4176 #ifndef USDT2
4177   DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4178 #else /* USDT2 */
4179  HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4180                                    env, string, start, len, buf);
4181 #endif /* USDT2 */
4182   DT_VOID_RETURN_MARK(GetStringRegion);
4183   oop s = JNIHandles::resolve_non_null(string);
4184   int s_len = java_lang_String::length(s);
4185   if (start < 0 || len < 0 || start + len > s_len) {
4186     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4187   } else {
4188     if (len > 0) {
4189       int s_offset = java_lang_String::offset(s);
4190       typeArrayOop s_value = java_lang_String::value(s);
4191       memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4192     }
4193   }
4194 JNI_END
4195 
4196 #ifndef USDT2
4197 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4198 #else /* USDT2 */
4199 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4200                          , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4201 #endif /* USDT2 */
4202 
4203 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4204   JNIWrapper("GetStringUTFRegion");
4205 #ifndef USDT2
4206   DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4207 #else /* USDT2 */
4208  HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4209                                       env, string, start, len, buf);
4210 #endif /* USDT2 */
4211   DT_VOID_RETURN_MARK(GetStringUTFRegion);
4212   oop s = JNIHandles::resolve_non_null(string);
4213   int s_len = java_lang_String::length(s);
4214   if (start < 0 || len < 0 || start + len > s_len) {
4215     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4216   } else {
4217     //%note jni_7
4218     if (len > 0) {
4219       ResourceMark rm(THREAD);
4220       char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4221       int utf_len = (int)strlen(utf_region);
4222       memcpy(buf, utf_region, utf_len);
4223       buf[utf_len] = 0;
4224     } else {
4225       // JDK null-terminates the buffer even in len is zero
4226       if (buf != NULL) {
4227         buf[0] = 0;
4228       }
4229     }
4230   }
4231 JNI_END
4232 
4233 
4234 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4235   JNIWrapper("GetPrimitiveArrayCritical");
4236 #ifndef USDT2
4237   DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4238 #else /* USDT2 */
4239  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4240                                              env, array, (uintptr_t *) isCopy);
4241 #endif /* USDT2 */
4242   GC_locker::lock_critical(thread);
4243   if (isCopy != NULL) {
4244     *isCopy = JNI_FALSE;
4245   }
4246   oop a = JNIHandles::resolve_non_null(array);
4247   assert(a->is_array(), "just checking");
4248   BasicType type;
4249   if (a->is_objArray()) {
4250     type = T_OBJECT;
4251   } else {
4252     type = typeArrayKlass::cast(a->klass())->element_type();
4253   }
4254   void* ret = arrayOop(a)->base(type);
4255 #ifndef USDT2
4256   DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4257 #else /* USDT2 */
4258  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4259                                               ret);
4260 #endif /* USDT2 */
4261   return ret;
4262 JNI_END
4263 
4264 
4265 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4266   JNIWrapper("ReleasePrimitiveArrayCritical");
4267 #ifndef USDT2
4268   DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4269 #else /* USDT2 */
4270   HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4271                                                   env, array, carray, mode);
4272 #endif /* USDT2 */
4273   // The array, carray and mode arguments are ignored
4274   GC_locker::unlock_critical(thread);
4275 #ifndef USDT2
4276   DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4277 #else /* USDT2 */
4278 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4279 );
4280 #endif /* USDT2 */
4281 JNI_END
4282 
4283 
4284 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4285   JNIWrapper("GetStringCritical");
4286 #ifndef USDT2
4287   DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4288 #else /* USDT2 */
4289   HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4290                                       env, string, (uintptr_t *) isCopy);
4291 #endif /* USDT2 */
4292   GC_locker::lock_critical(thread);
4293   if (isCopy != NULL) {
4294     *isCopy = JNI_FALSE;
4295   }
4296   oop s = JNIHandles::resolve_non_null(string);
4297   int s_len = java_lang_String::length(s);
4298   typeArrayOop s_value = java_lang_String::value(s);
4299   int s_offset = java_lang_String::offset(s);
4300   const jchar* ret;
4301   if (s_len > 0) {
4302     ret = s_value->char_at_addr(s_offset);
4303   } else {
4304     ret = (jchar*) s_value->base(T_CHAR);
4305   }
4306 #ifndef USDT2
4307   DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4308 #else /* USDT2 */
4309  HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4310                                       (uint16_t *) ret);
4311 #endif /* USDT2 */
4312   return ret;
4313 JNI_END
4314 
4315 
4316 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4317   JNIWrapper("ReleaseStringCritical");
4318 #ifndef USDT2
4319   DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4320 #else /* USDT2 */
4321   HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4322                                           env, str, (uint16_t *) chars);
4323 #endif /* USDT2 */
4324   // The str and chars arguments are ignored
4325   GC_locker::unlock_critical(thread);
4326 #ifndef USDT2
4327   DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4328 #else /* USDT2 */
4329 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4330 );
4331 #endif /* USDT2 */
4332 JNI_END
4333 
4334 
4335 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4336   JNIWrapper("jni_NewWeakGlobalRef");
4337 #ifndef USDT2
4338   DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4339 #else /* USDT2 */
4340  HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4341                                     env, ref);
4342 #endif /* USDT2 */
4343   Handle ref_handle(thread, JNIHandles::resolve(ref));
4344   jweak ret = JNIHandles::make_weak_global(ref_handle);
4345 #ifndef USDT2
4346   DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4347 #else /* USDT2 */
4348  HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4349                                      ret);
4350 #endif /* USDT2 */
4351   return ret;
4352 JNI_END
4353 
4354 // Must be JNI_ENTRY (with HandleMark)
4355 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4356   JNIWrapper("jni_DeleteWeakGlobalRef");
4357 #ifndef USDT2
4358   DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4359 #else /* USDT2 */
4360   HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4361                                         env, ref);
4362 #endif /* USDT2 */
4363   JNIHandles::destroy_weak_global(ref);
4364 #ifndef USDT2
4365   DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4366 #else /* USDT2 */
4367   HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4368                                          );
4369 #endif /* USDT2 */
4370 JNI_END
4371 
4372 
4373 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4374   JNIWrapper("jni_ExceptionCheck");
4375 #ifndef USDT2
4376   DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4377 #else /* USDT2 */
4378  HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4379                                   env);
4380 #endif /* USDT2 */
4381   jni_check_async_exceptions(thread);
4382   jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4383 #ifndef USDT2
4384   DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4385 #else /* USDT2 */
4386  HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4387                                    ret);
4388 #endif /* USDT2 */
4389   return ret;
4390 JNI_END
4391 
4392 
4393 // Initialization state for three routines below relating to
4394 // java.nio.DirectBuffers
4395 static          jint directBufferSupportInitializeStarted = 0;
4396 static volatile jint directBufferSupportInitializeEnded   = 0;
4397 static volatile jint directBufferSupportInitializeFailed  = 0;
4398 static jclass    bufferClass                 = NULL;
4399 static jclass    directBufferClass           = NULL;
4400 static jclass    directByteBufferClass       = NULL;
4401 static jmethodID directByteBufferConstructor = NULL;
4402 static jfieldID  directBufferAddressField    = NULL;
4403 static jfieldID  bufferCapacityField         = NULL;
4404 
4405 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4406   Handle loader;            // null (bootstrap) loader
4407   Handle protection_domain; // null protection domain
4408 
4409   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4410   jclass result =  find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4411 
4412   if (TraceClassResolution && result != NULL) {
4413     trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result)));
4414   }
4415   return result;
4416 }
4417 
4418 // These lookups are done with the NULL (bootstrap) ClassLoader to
4419 // circumvent any security checks that would be done by jni_FindClass.
4420 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4421 {
4422   if ((bufferClass           = lookupOne(env, "java/nio/Buffer", thread))           == NULL) { return false; }
4423   if ((directBufferClass     = lookupOne(env, "sun/nio/ch/DirectBuffer", thread))   == NULL) { return false; }
4424   if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4425   return true;
4426 }
4427 JNI_END
4428 
4429 
4430 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4431   if (directBufferSupportInitializeFailed) {
4432     return false;
4433   }
4434 
4435   if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4436     if (!lookupDirectBufferClasses(env)) {
4437       directBufferSupportInitializeFailed = 1;
4438       return false;
4439     }
4440 
4441     // Make global references for these
4442     bufferClass           = (jclass) env->NewGlobalRef(bufferClass);
4443     directBufferClass     = (jclass) env->NewGlobalRef(directBufferClass);
4444     directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4445 
4446     // Get needed field and method IDs
4447     directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4448     directBufferAddressField    = env->GetFieldID(bufferClass, "address", "J");
4449     bufferCapacityField         = env->GetFieldID(bufferClass, "capacity", "I");
4450 
4451     if ((directByteBufferConstructor == NULL) ||
4452         (directBufferAddressField    == NULL) ||
4453         (bufferCapacityField         == NULL)) {
4454       directBufferSupportInitializeFailed = 1;
4455       return false;
4456     }
4457 
4458     directBufferSupportInitializeEnded = 1;
4459   } else {
4460     while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4461       // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4462       // os::sleep which requires the VM state transition. On other platforms, it
4463       // is not necessary. The following call to change the VM state is purposely
4464       // put inside the loop to avoid potential deadlock when multiple threads
4465       // try to call this method. See 6791815 for more details.
4466       ThreadInVMfromNative tivn(thread);
4467       os::yield_all();
4468     }
4469   }
4470 
4471   return !directBufferSupportInitializeFailed;
4472 }
4473 
4474 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4475 {
4476   // thread_from_jni_environment() will block if VM is gone.
4477   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4478 
4479   JNIWrapper("jni_NewDirectByteBuffer");
4480 #ifndef USDT2
4481   DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4482 #else /* USDT2 */
4483  HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4484                                        env, address, capacity);
4485 #endif /* USDT2 */
4486 
4487   if (!directBufferSupportInitializeEnded) {
4488     if (!initializeDirectBufferSupport(env, thread)) {
4489 #ifndef USDT2
4490       DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4491 #else /* USDT2 */
4492       HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4493                                              NULL);
4494 #endif /* USDT2 */
4495       return NULL;
4496     }
4497   }
4498 
4499   // Being paranoid about accidental sign extension on address
4500   jlong addr = (jlong) ((uintptr_t) address);
4501   // NOTE that package-private DirectByteBuffer constructor currently
4502   // takes int capacity
4503   jint  cap  = (jint)  capacity;
4504   jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4505 #ifndef USDT2
4506   DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4507 #else /* USDT2 */
4508   HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4509                                          ret);
4510 #endif /* USDT2 */
4511   return ret;
4512 }
4513 
4514 #ifndef USDT2
4515 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4516 #else /* USDT2 */
4517 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4518                     , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4519 #endif /* USDT2 */
4520 
4521 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4522 {
4523   // thread_from_jni_environment() will block if VM is gone.
4524   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4525 
4526   JNIWrapper("jni_GetDirectBufferAddress");
4527 #ifndef USDT2
4528   DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4529 #else /* USDT2 */
4530   HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4531                                            env, buf);
4532 #endif /* USDT2 */
4533   void* ret = NULL;
4534   DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4535 
4536   if (!directBufferSupportInitializeEnded) {
4537     if (!initializeDirectBufferSupport(env, thread)) {
4538       return 0;
4539     }
4540   }
4541 
4542   if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4543     return 0;
4544   }
4545 
4546   ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4547   return ret;
4548 }
4549 
4550 #ifndef USDT2
4551 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4552 #else /* USDT2 */
4553 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4554                     , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4555 #endif /* USDT2 */
4556 
4557 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4558 {
4559   // thread_from_jni_environment() will block if VM is gone.
4560   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4561 
4562   JNIWrapper("jni_GetDirectBufferCapacity");
4563 #ifndef USDT2
4564   DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4565 #else /* USDT2 */
4566   HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4567                                             env, buf);
4568 #endif /* USDT2 */
4569   jlong ret = -1;
4570   DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4571 
4572   if (!directBufferSupportInitializeEnded) {
4573     if (!initializeDirectBufferSupport(env, thread)) {
4574       ret = 0;
4575       return ret;
4576     }
4577   }
4578 
4579   if (buf == NULL) {
4580     return -1;
4581   }
4582 
4583   if (!env->IsInstanceOf(buf, directBufferClass)) {
4584     return -1;
4585   }
4586 
4587   // NOTE that capacity is currently an int in the implementation
4588   ret = env->GetIntField(buf, bufferCapacityField);
4589   return ret;
4590 }
4591 
4592 
4593 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4594   JNIWrapper("GetVersion");
4595 #ifndef USDT2
4596   DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4597 #else /* USDT2 */
4598   HOTSPOT_JNI_GETVERSION_ENTRY(
4599                                env);
4600 #endif /* USDT2 */
4601 #ifndef USDT2
4602   DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4603 #else /* USDT2 */
4604   HOTSPOT_JNI_GETVERSION_RETURN(
4605                                 CurrentVersion);
4606 #endif /* USDT2 */
4607   return CurrentVersion;
4608 JNI_END
4609 
4610 extern struct JavaVM_ main_vm;
4611 
4612 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4613   JNIWrapper("jni_GetJavaVM");
4614 #ifndef USDT2
4615   DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4616 #else /* USDT2 */
4617   HOTSPOT_JNI_GETJAVAVM_ENTRY(
4618                               env, (void **) vm);
4619 #endif /* USDT2 */
4620   *vm  = (JavaVM *)(&main_vm);
4621 #ifndef USDT2
4622   DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4623 #else /* USDT2 */
4624   HOTSPOT_JNI_GETJAVAVM_RETURN(
4625                                JNI_OK);
4626 #endif /* USDT2 */
4627   return JNI_OK;
4628 JNI_END
4629 
4630 // Structure containing all jni functions
4631 struct JNINativeInterface_ jni_NativeInterface = {
4632     NULL,
4633     NULL,
4634     NULL,
4635 
4636     NULL,
4637 
4638     jni_GetVersion,
4639 
4640     jni_DefineClass,
4641     jni_FindClass,
4642 
4643     jni_FromReflectedMethod,
4644     jni_FromReflectedField,
4645 
4646     jni_ToReflectedMethod,
4647 
4648     jni_GetSuperclass,
4649     jni_IsAssignableFrom,
4650 
4651     jni_ToReflectedField,
4652 
4653     jni_Throw,
4654     jni_ThrowNew,
4655     jni_ExceptionOccurred,
4656     jni_ExceptionDescribe,
4657     jni_ExceptionClear,
4658     jni_FatalError,
4659 
4660     jni_PushLocalFrame,
4661     jni_PopLocalFrame,
4662 
4663     jni_NewGlobalRef,
4664     jni_DeleteGlobalRef,
4665     jni_DeleteLocalRef,
4666     jni_IsSameObject,
4667 
4668     jni_NewLocalRef,
4669     jni_EnsureLocalCapacity,
4670 
4671     jni_AllocObject,
4672     jni_NewObject,
4673     jni_NewObjectV,
4674     jni_NewObjectA,
4675 
4676     jni_GetObjectClass,
4677     jni_IsInstanceOf,
4678 
4679     jni_GetMethodID,
4680 
4681     jni_CallObjectMethod,
4682     jni_CallObjectMethodV,
4683     jni_CallObjectMethodA,
4684     jni_CallBooleanMethod,
4685     jni_CallBooleanMethodV,
4686     jni_CallBooleanMethodA,
4687     jni_CallByteMethod,
4688     jni_CallByteMethodV,
4689     jni_CallByteMethodA,
4690     jni_CallCharMethod,
4691     jni_CallCharMethodV,
4692     jni_CallCharMethodA,
4693     jni_CallShortMethod,
4694     jni_CallShortMethodV,
4695     jni_CallShortMethodA,
4696     jni_CallIntMethod,
4697     jni_CallIntMethodV,
4698     jni_CallIntMethodA,
4699     jni_CallLongMethod,
4700     jni_CallLongMethodV,
4701     jni_CallLongMethodA,
4702     jni_CallFloatMethod,
4703     jni_CallFloatMethodV,
4704     jni_CallFloatMethodA,
4705     jni_CallDoubleMethod,
4706     jni_CallDoubleMethodV,
4707     jni_CallDoubleMethodA,
4708     jni_CallVoidMethod,
4709     jni_CallVoidMethodV,
4710     jni_CallVoidMethodA,
4711 
4712     jni_CallNonvirtualObjectMethod,
4713     jni_CallNonvirtualObjectMethodV,
4714     jni_CallNonvirtualObjectMethodA,
4715     jni_CallNonvirtualBooleanMethod,
4716     jni_CallNonvirtualBooleanMethodV,
4717     jni_CallNonvirtualBooleanMethodA,
4718     jni_CallNonvirtualByteMethod,
4719     jni_CallNonvirtualByteMethodV,
4720     jni_CallNonvirtualByteMethodA,
4721     jni_CallNonvirtualCharMethod,
4722     jni_CallNonvirtualCharMethodV,
4723     jni_CallNonvirtualCharMethodA,
4724     jni_CallNonvirtualShortMethod,
4725     jni_CallNonvirtualShortMethodV,
4726     jni_CallNonvirtualShortMethodA,
4727     jni_CallNonvirtualIntMethod,
4728     jni_CallNonvirtualIntMethodV,
4729     jni_CallNonvirtualIntMethodA,
4730     jni_CallNonvirtualLongMethod,
4731     jni_CallNonvirtualLongMethodV,
4732     jni_CallNonvirtualLongMethodA,
4733     jni_CallNonvirtualFloatMethod,
4734     jni_CallNonvirtualFloatMethodV,
4735     jni_CallNonvirtualFloatMethodA,
4736     jni_CallNonvirtualDoubleMethod,
4737     jni_CallNonvirtualDoubleMethodV,
4738     jni_CallNonvirtualDoubleMethodA,
4739     jni_CallNonvirtualVoidMethod,
4740     jni_CallNonvirtualVoidMethodV,
4741     jni_CallNonvirtualVoidMethodA,
4742 
4743     jni_GetFieldID,
4744 
4745     jni_GetObjectField,
4746     jni_GetBooleanField,
4747     jni_GetByteField,
4748     jni_GetCharField,
4749     jni_GetShortField,
4750     jni_GetIntField,
4751     jni_GetLongField,
4752     jni_GetFloatField,
4753     jni_GetDoubleField,
4754 
4755     jni_SetObjectField,
4756     jni_SetBooleanField,
4757     jni_SetByteField,
4758     jni_SetCharField,
4759     jni_SetShortField,
4760     jni_SetIntField,
4761     jni_SetLongField,
4762     jni_SetFloatField,
4763     jni_SetDoubleField,
4764 
4765     jni_GetStaticMethodID,
4766 
4767     jni_CallStaticObjectMethod,
4768     jni_CallStaticObjectMethodV,
4769     jni_CallStaticObjectMethodA,
4770     jni_CallStaticBooleanMethod,
4771     jni_CallStaticBooleanMethodV,
4772     jni_CallStaticBooleanMethodA,
4773     jni_CallStaticByteMethod,
4774     jni_CallStaticByteMethodV,
4775     jni_CallStaticByteMethodA,
4776     jni_CallStaticCharMethod,
4777     jni_CallStaticCharMethodV,
4778     jni_CallStaticCharMethodA,
4779     jni_CallStaticShortMethod,
4780     jni_CallStaticShortMethodV,
4781     jni_CallStaticShortMethodA,
4782     jni_CallStaticIntMethod,
4783     jni_CallStaticIntMethodV,
4784     jni_CallStaticIntMethodA,
4785     jni_CallStaticLongMethod,
4786     jni_CallStaticLongMethodV,
4787     jni_CallStaticLongMethodA,
4788     jni_CallStaticFloatMethod,
4789     jni_CallStaticFloatMethodV,
4790     jni_CallStaticFloatMethodA,
4791     jni_CallStaticDoubleMethod,
4792     jni_CallStaticDoubleMethodV,
4793     jni_CallStaticDoubleMethodA,
4794     jni_CallStaticVoidMethod,
4795     jni_CallStaticVoidMethodV,
4796     jni_CallStaticVoidMethodA,
4797 
4798     jni_GetStaticFieldID,
4799 
4800     jni_GetStaticObjectField,
4801     jni_GetStaticBooleanField,
4802     jni_GetStaticByteField,
4803     jni_GetStaticCharField,
4804     jni_GetStaticShortField,
4805     jni_GetStaticIntField,
4806     jni_GetStaticLongField,
4807     jni_GetStaticFloatField,
4808     jni_GetStaticDoubleField,
4809 
4810     jni_SetStaticObjectField,
4811     jni_SetStaticBooleanField,
4812     jni_SetStaticByteField,
4813     jni_SetStaticCharField,
4814     jni_SetStaticShortField,
4815     jni_SetStaticIntField,
4816     jni_SetStaticLongField,
4817     jni_SetStaticFloatField,
4818     jni_SetStaticDoubleField,
4819 
4820     jni_NewString,
4821     jni_GetStringLength,
4822     jni_GetStringChars,
4823     jni_ReleaseStringChars,
4824 
4825     jni_NewStringUTF,
4826     jni_GetStringUTFLength,
4827     jni_GetStringUTFChars,
4828     jni_ReleaseStringUTFChars,
4829 
4830     jni_GetArrayLength,
4831 
4832     jni_NewObjectArray,
4833     jni_GetObjectArrayElement,
4834     jni_SetObjectArrayElement,
4835 
4836     jni_NewBooleanArray,
4837     jni_NewByteArray,
4838     jni_NewCharArray,
4839     jni_NewShortArray,
4840     jni_NewIntArray,
4841     jni_NewLongArray,
4842     jni_NewFloatArray,
4843     jni_NewDoubleArray,
4844 
4845     jni_GetBooleanArrayElements,
4846     jni_GetByteArrayElements,
4847     jni_GetCharArrayElements,
4848     jni_GetShortArrayElements,
4849     jni_GetIntArrayElements,
4850     jni_GetLongArrayElements,
4851     jni_GetFloatArrayElements,
4852     jni_GetDoubleArrayElements,
4853 
4854     jni_ReleaseBooleanArrayElements,
4855     jni_ReleaseByteArrayElements,
4856     jni_ReleaseCharArrayElements,
4857     jni_ReleaseShortArrayElements,
4858     jni_ReleaseIntArrayElements,
4859     jni_ReleaseLongArrayElements,
4860     jni_ReleaseFloatArrayElements,
4861     jni_ReleaseDoubleArrayElements,
4862 
4863     jni_GetBooleanArrayRegion,
4864     jni_GetByteArrayRegion,
4865     jni_GetCharArrayRegion,
4866     jni_GetShortArrayRegion,
4867     jni_GetIntArrayRegion,
4868     jni_GetLongArrayRegion,
4869     jni_GetFloatArrayRegion,
4870     jni_GetDoubleArrayRegion,
4871 
4872     jni_SetBooleanArrayRegion,
4873     jni_SetByteArrayRegion,
4874     jni_SetCharArrayRegion,
4875     jni_SetShortArrayRegion,
4876     jni_SetIntArrayRegion,
4877     jni_SetLongArrayRegion,
4878     jni_SetFloatArrayRegion,
4879     jni_SetDoubleArrayRegion,
4880 
4881     jni_RegisterNatives,
4882     jni_UnregisterNatives,
4883 
4884     jni_MonitorEnter,
4885     jni_MonitorExit,
4886 
4887     jni_GetJavaVM,
4888 
4889     jni_GetStringRegion,
4890     jni_GetStringUTFRegion,
4891 
4892     jni_GetPrimitiveArrayCritical,
4893     jni_ReleasePrimitiveArrayCritical,
4894 
4895     jni_GetStringCritical,
4896     jni_ReleaseStringCritical,
4897 
4898     jni_NewWeakGlobalRef,
4899     jni_DeleteWeakGlobalRef,
4900 
4901     jni_ExceptionCheck,
4902 
4903     jni_NewDirectByteBuffer,
4904     jni_GetDirectBufferAddress,
4905     jni_GetDirectBufferCapacity,
4906 
4907     // New 1_6 features
4908 
4909     jni_GetObjectRefType
4910 };
4911 
4912 
4913 // For jvmti use to modify jni function table.
4914 // Java threads in native contiues to run until it is transitioned
4915 // to VM at safepoint. Before the transition or before it is blocked
4916 // for safepoint it may access jni function table. VM could crash if
4917 // any java thread access the jni function table in the middle of memcpy.
4918 // To avoid this each function pointers are copied automically.
4919 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4920   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4921   intptr_t *a = (intptr_t *) jni_functions();
4922   intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4923   for (uint i=0; i <  sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4924     Atomic::store_ptr(*b++, a++);
4925   }
4926 }
4927 
4928 void quicken_jni_functions() {
4929   // Replace Get<Primitive>Field with fast versions
4930   if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4931       && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4932 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4933       // windows x86 currently needs SEH wrapper and the gain of the fast
4934       // versions currently isn't certain for server vm on uniprocessor.
4935       && os::is_MP()
4936 #endif
4937   ) {
4938     address func;
4939     func = JNI_FastGetField::generate_fast_get_boolean_field();
4940     if (func != (address)-1) {
4941       jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4942     }
4943     func = JNI_FastGetField::generate_fast_get_byte_field();
4944     if (func != (address)-1) {
4945       jni_NativeInterface.GetByteField = (GetByteField_t)func;
4946     }
4947     func = JNI_FastGetField::generate_fast_get_char_field();
4948     if (func != (address)-1) {
4949       jni_NativeInterface.GetCharField = (GetCharField_t)func;
4950     }
4951     func = JNI_FastGetField::generate_fast_get_short_field();
4952     if (func != (address)-1) {
4953       jni_NativeInterface.GetShortField = (GetShortField_t)func;
4954     }
4955     func = JNI_FastGetField::generate_fast_get_int_field();
4956     if (func != (address)-1) {
4957       jni_NativeInterface.GetIntField = (GetIntField_t)func;
4958     }
4959     func = JNI_FastGetField::generate_fast_get_long_field();
4960     if (func != (address)-1) {
4961       jni_NativeInterface.GetLongField = (GetLongField_t)func;
4962     }
4963     func = JNI_FastGetField::generate_fast_get_float_field();
4964     if (func != (address)-1) {
4965       jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4966     }
4967     func = JNI_FastGetField::generate_fast_get_double_field();
4968     if (func != (address)-1) {
4969       jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4970     }
4971   }
4972 }
4973 
4974 // Returns the function structure
4975 struct JNINativeInterface_* jni_functions() {
4976 #ifndef JNICHECK_KERNEL
4977   if (CheckJNICalls) return jni_functions_check();
4978 #else  // JNICHECK_KERNEL
4979   if (CheckJNICalls) warning("-Xcheck:jni is not supported in kernel vm.");
4980 #endif // JNICHECK_KERNEL
4981   return &jni_NativeInterface;
4982 }
4983 
4984 // Returns the function structure
4985 struct JNINativeInterface_* jni_functions_nocheck() {
4986   return &jni_NativeInterface;
4987 }
4988 
4989 
4990 // Invocation API
4991 
4992 
4993 // Forward declaration
4994 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4995 
4996 // Global invocation API vars
4997 volatile jint vm_created = 0;
4998 // Indicate whether it is safe to recreate VM
4999 volatile jint safe_to_recreate_vm = 1;
5000 struct JavaVM_ main_vm = {&jni_InvokeInterface};
5001 
5002 
5003 #define JAVASTACKSIZE (400 * 1024)    /* Default size of a thread java stack */
5004 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
5005 
5006 #ifndef USDT2
5007 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
5008 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
5009 #else /* USDT2 */
5010 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
5011                     , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
5012 #endif /* USDT2 */
5013 
5014 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5015 #ifndef USDT2
5016   HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5017 #else /* USDT2 */
5018   HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5019                                              args_);
5020 #endif /* USDT2 */
5021   JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5022   jint ret = JNI_ERR;
5023   DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5024 
5025   if (Threads::is_supported_jni_version(args->version)) {
5026     ret = JNI_OK;
5027   }
5028   // 1.1 style no longer supported in hotspot.
5029   // According the JNI spec, we should update args->version on return.
5030   // We also use the structure to communicate with launcher about default
5031   // stack size.
5032   if (args->version == JNI_VERSION_1_1) {
5033     args->version = JNI_VERSION_1_2;
5034     // javaStackSize is int in arguments structure
5035     assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5036     args->javaStackSize = (jint)(ThreadStackSize * K);
5037   }
5038   return ret;
5039 }
5040 
5041 #ifndef PRODUCT
5042 
5043 #include "gc_interface/collectedHeap.hpp"
5044 #include "utilities/quickSort.hpp"
5045 
5046 #define run_unit_test(unit_test_function_call)              \
5047   tty->print_cr("Running test: " #unit_test_function_call); \
5048   unit_test_function_call
5049 
5050 void execute_internal_vm_tests() {
5051   if (ExecuteInternalVMTests) {
5052     tty->print_cr("Running internal VM tests");
5053     run_unit_test(arrayOopDesc::test_max_array_length());
5054     run_unit_test(CollectedHeap::test_is_in());
5055     run_unit_test(QuickSort::test_quick_sort());
5056     tty->print_cr("All internal VM tests passed");
5057   }
5058 }
5059 
5060 #undef run_unit_test
5061 
5062 #endif
5063 
5064 #ifndef USDT2
5065 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5066 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5067 #else /* USDT2 */
5068 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5069                     , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5070 #endif /* USDT2 */
5071 
5072 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5073 #ifndef USDT2
5074   HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5075 #else /* USDT2 */
5076   HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5077                                  (void **) vm, penv, args);
5078 #endif /* USDT2 */
5079 
5080   jint result = JNI_ERR;
5081   DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5082 
5083   // We're about to use Atomic::xchg for synchronization.  Some Zero
5084   // platforms use the GCC builtin __sync_lock_test_and_set for this,
5085   // but __sync_lock_test_and_set is not guaranteed to do what we want
5086   // on all architectures.  So we check it works before relying on it.
5087 #if defined(ZERO) && defined(ASSERT)
5088   {
5089     jint a = 0xcafebabe;
5090     jint b = Atomic::xchg(0xdeadbeef, &a);
5091     void *c = &a;
5092     void *d = Atomic::xchg_ptr(&b, &c);
5093     assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5094     assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5095   }
5096 #endif // ZERO && ASSERT
5097 
5098   // At the moment it's only possible to have one Java VM,
5099   // since some of the runtime state is in global variables.
5100 
5101   // We cannot use our mutex locks here, since they only work on
5102   // Threads. We do an atomic compare and exchange to ensure only
5103   // one thread can call this method at a time
5104 
5105   // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5106   // the add/dec implementations are dependent on whether we are running
5107   // on a multiprocessor, and at this stage of initialization the os::is_MP
5108   // function used to determine this will always return false. Atomic::xchg
5109   // does not have this problem.
5110   if (Atomic::xchg(1, &vm_created) == 1) {
5111     return JNI_ERR;   // already created, or create attempt in progress
5112   }
5113   if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5114     return JNI_ERR;  // someone tried and failed and retry not allowed.
5115   }
5116 
5117   assert(vm_created == 1, "vm_created is true during the creation");
5118 
5119   /**
5120    * Certain errors during initialization are recoverable and do not
5121    * prevent this method from being called again at a later time
5122    * (perhaps with different arguments).  However, at a certain
5123    * point during initialization if an error occurs we cannot allow
5124    * this function to be called again (or it will crash).  In those
5125    * situations, the 'canTryAgain' flag is set to false, which atomically
5126    * sets safe_to_recreate_vm to 1, such that any new call to
5127    * JNI_CreateJavaVM will immediately fail using the above logic.
5128    */
5129   bool can_try_again = true;
5130 
5131   result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5132   if (result == JNI_OK) {
5133     JavaThread *thread = JavaThread::current();
5134     /* thread is thread_in_vm here */
5135     *vm = (JavaVM *)(&main_vm);
5136     *(JNIEnv**)penv = thread->jni_environment();
5137 
5138     // Tracks the time application was running before GC
5139     RuntimeService::record_application_start();
5140 
5141     // Notify JVMTI
5142     if (JvmtiExport::should_post_thread_life()) {
5143        JvmtiExport::post_thread_start(thread);
5144     }
5145 
5146     EVENT_BEGIN(TraceEventThreadStart, event);
5147     EVENT_COMMIT(event,
5148         EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5149 
5150     // Check if we should compile all classes on bootclasspath
5151     NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();)
5152     // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5153     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5154   } else {
5155     if (can_try_again) {
5156       // reset safe_to_recreate_vm to 1 so that retrial would be possible
5157       safe_to_recreate_vm = 1;
5158     }
5159 
5160     // Creation failed. We must reset vm_created
5161     *vm = 0;
5162     *(JNIEnv**)penv = 0;
5163     // reset vm_created last to avoid race condition. Use OrderAccess to
5164     // control both compiler and architectural-based reordering.
5165     OrderAccess::release_store(&vm_created, 0);
5166   }
5167 
5168   NOT_PRODUCT(test_error_handler(ErrorHandlerTest));
5169   NOT_PRODUCT(execute_internal_vm_tests());
5170   return result;
5171 }
5172 
5173 #ifndef USDT2
5174 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5175   JavaVM**, jsize, jsize*);
5176 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5177 #endif /* !USDT2 */
5178 
5179 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5180   // See bug 4367188, the wrapper can sometimes cause VM crashes
5181   // JNIWrapper("GetCreatedJavaVMs");
5182 #ifndef USDT2
5183   HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5184     vm_buf, bufLen, numVMs);
5185 #else /* USDT2 */
5186   HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5187                                       (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5188 #endif /* USDT2 */
5189   if (vm_created) {
5190     if (numVMs != NULL) *numVMs = 1;
5191     if (bufLen > 0)     *vm_buf = (JavaVM *)(&main_vm);
5192   } else {
5193     if (numVMs != NULL) *numVMs = 0;
5194   }
5195 #ifndef USDT2
5196   HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5197 #else /* USDT2 */
5198   HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5199                                     JNI_OK);
5200 #endif /* USDT2 */
5201   return JNI_OK;
5202 }
5203 
5204 extern "C" {
5205 
5206 #ifndef USDT2
5207 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5208 #else /* USDT2 */
5209 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5210                     , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5211 #endif /* USDT2 */
5212 
5213 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5214 #ifndef USDT2
5215   DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5216 #else /* USDT2 */
5217   HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5218                                   vm);
5219 #endif /* USDT2 */
5220   jint res = JNI_ERR;
5221   DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5222 
5223   if (!vm_created) {
5224     res = JNI_ERR;
5225     return res;
5226   }
5227 
5228   JNIWrapper("DestroyJavaVM");
5229   JNIEnv *env;
5230   JavaVMAttachArgs destroyargs;
5231   destroyargs.version = CurrentVersion;
5232   destroyargs.name = (char *)"DestroyJavaVM";
5233   destroyargs.group = NULL;
5234   res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5235   if (res != JNI_OK) {
5236     return res;
5237   }
5238 
5239   // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5240   JavaThread* thread = JavaThread::current();
5241   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5242   if (Threads::destroy_vm()) {
5243     // Should not change thread state, VM is gone
5244     vm_created = false;
5245     res = JNI_OK;
5246     return res;
5247   } else {
5248     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5249     res = JNI_ERR;
5250     return res;
5251   }
5252 }
5253 
5254 
5255 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5256   JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5257 
5258   // Check below commented out from JDK1.2fcs as well
5259   /*
5260   if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5261     return JNI_EVERSION;
5262   }
5263   */
5264 
5265   Thread* t = ThreadLocalStorage::get_thread_slow();
5266   if (t != NULL) {
5267     // If the thread has been attached this operation is a no-op
5268     *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5269     return JNI_OK;
5270   }
5271 
5272   // Create a thread and mark it as attaching so it will be skipped by the
5273   // ThreadsListEnumerator - see CR 6404306
5274   JavaThread* thread = new JavaThread(true);
5275 
5276   // Set correct safepoint info. The thread is going to call into Java when
5277   // initializing the Java level thread object. Hence, the correct state must
5278   // be set in order for the Safepoint code to deal with it correctly.
5279   thread->set_thread_state(_thread_in_vm);
5280   // Must do this before initialize_thread_local_storage
5281   thread->record_stack_base_and_size();
5282 
5283   thread->initialize_thread_local_storage();
5284 
5285   if (!os::create_attached_thread(thread)) {
5286     delete thread;
5287     return JNI_ERR;
5288   }
5289   // Enable stack overflow checks
5290   thread->create_stack_guard_pages();
5291 
5292   thread->initialize_tlab();
5293 
5294   thread->cache_global_variables();
5295 
5296   // Crucial that we do not have a safepoint check for this thread, since it has
5297   // not been added to the Thread list yet.
5298   { Threads_lock->lock_without_safepoint_check();
5299     // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5300     // avoid this thread trying to do a GC before it is added to the thread-list
5301     thread->set_active_handles(JNIHandleBlock::allocate_block());
5302     Threads::add(thread, daemon);
5303     Threads_lock->unlock();
5304   }
5305   // Create thread group and name info from attach arguments
5306   oop group = NULL;
5307   char* thread_name = NULL;
5308   if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5309     group = JNIHandles::resolve(args->group);
5310     thread_name = args->name; // may be NULL
5311   }
5312   if (group == NULL) group = Universe::main_thread_group();
5313 
5314   // Create Java level thread object and attach it to this thread
5315   bool attach_failed = false;
5316   {
5317     EXCEPTION_MARK;
5318     HandleMark hm(THREAD);
5319     Handle thread_group(THREAD, group);
5320     thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5321     if (HAS_PENDING_EXCEPTION) {
5322       CLEAR_PENDING_EXCEPTION;
5323       // cleanup outside the handle mark.
5324       attach_failed = true;
5325     }
5326   }
5327 
5328   if (attach_failed) {
5329     // Added missing cleanup
5330     thread->cleanup_failed_attach_current_thread();
5331     return JNI_ERR;
5332   }
5333 
5334   // mark the thread as no longer attaching
5335   // this uses a fence to push the change through so we don't have
5336   // to regrab the threads_lock
5337   thread->set_done_attaching_via_jni();
5338 
5339   // Set java thread status.
5340   java_lang_Thread::set_thread_status(thread->threadObj(),
5341               java_lang_Thread::RUNNABLE);
5342 
5343   // Notify the debugger
5344   if (JvmtiExport::should_post_thread_life()) {
5345     JvmtiExport::post_thread_start(thread);
5346   }
5347 
5348   EVENT_BEGIN(TraceEventThreadStart, event);
5349   EVENT_COMMIT(event,
5350       EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5351 
5352   *(JNIEnv**)penv = thread->jni_environment();
5353 
5354   // Now leaving the VM, so change thread_state. This is normally automatically taken care
5355   // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5356   // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5357   // needed.
5358 
5359   ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5360 
5361   // Perform any platform dependent FPU setup
5362   os::setup_fpu();
5363 
5364   return JNI_OK;
5365 }
5366 
5367 
5368 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5369 #ifndef USDT2
5370   DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5371 #else /* USDT2 */
5372   HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5373                                         vm, penv, _args);
5374 #endif /* USDT2 */
5375   if (!vm_created) {
5376 #ifndef USDT2
5377     DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5378 #else /* USDT2 */
5379   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5380                                          (uint32_t) JNI_ERR);
5381 #endif /* USDT2 */
5382     return JNI_ERR;
5383   }
5384 
5385   JNIWrapper("AttachCurrentThread");
5386   jint ret = attach_current_thread(vm, penv, _args, false);
5387 #ifndef USDT2
5388   DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5389 #else /* USDT2 */
5390   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5391                                          ret);
5392 #endif /* USDT2 */
5393   return ret;
5394 }
5395 
5396 
5397 jint JNICALL jni_DetachCurrentThread(JavaVM *vm)  {
5398 #ifndef USDT2
5399   DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5400 #else /* USDT2 */
5401   HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5402                                         vm);
5403 #endif /* USDT2 */
5404   VM_Exit::block_if_vm_exited();
5405 
5406   JNIWrapper("DetachCurrentThread");
5407 
5408   // If the thread has been deattacted the operations is a no-op
5409   if (ThreadLocalStorage::thread() == NULL) {
5410 #ifndef USDT2
5411     DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5412 #else /* USDT2 */
5413   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5414                                          JNI_OK);
5415 #endif /* USDT2 */
5416     return JNI_OK;
5417   }
5418 
5419   JavaThread* thread = JavaThread::current();
5420   if (thread->has_last_Java_frame()) {
5421 #ifndef USDT2
5422     DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5423 #else /* USDT2 */
5424   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5425                                          (uint32_t) JNI_ERR);
5426 #endif /* USDT2 */
5427     // Can't detach a thread that's running java, that can't work.
5428     return JNI_ERR;
5429   }
5430 
5431   // Safepoint support. Have to do call-back to safepoint code, if in the
5432   // middel of a safepoint operation
5433   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5434 
5435   // XXX: Note that JavaThread::exit() call below removes the guards on the
5436   // stack pages set up via enable_stack_{red,yellow}_zone() calls
5437   // above in jni_AttachCurrentThread. Unfortunately, while the setting
5438   // of the guards is visible in jni_AttachCurrentThread above,
5439   // the removal of the guards is buried below in JavaThread::exit()
5440   // here. The abstraction should be more symmetrically either exposed
5441   // or hidden (e.g. it could probably be hidden in the same
5442   // (platform-dependent) methods where we do alternate stack
5443   // maintenance work?)
5444   thread->exit(false, JavaThread::jni_detach);
5445   delete thread;
5446 
5447 #ifndef USDT2
5448   DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5449 #else /* USDT2 */
5450   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5451                                          JNI_OK);
5452 #endif /* USDT2 */
5453   return JNI_OK;
5454 }
5455 
5456 #ifndef USDT2
5457 DT_RETURN_MARK_DECL(GetEnv, jint);
5458 #else /* USDT2 */
5459 DT_RETURN_MARK_DECL(GetEnv, jint
5460                     , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5461 #endif /* USDT2 */
5462 
5463 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5464 #ifndef USDT2
5465   DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5466 #else /* USDT2 */
5467   HOTSPOT_JNI_GETENV_ENTRY(
5468                            vm, penv, version);
5469 #endif /* USDT2 */
5470   jint ret = JNI_ERR;
5471   DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5472 
5473   if (!vm_created) {
5474     *penv = NULL;
5475     ret = JNI_EDETACHED;
5476     return ret;
5477   }
5478 
5479   if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5480     return ret;
5481   }
5482 
5483 #ifndef JVMPI_VERSION_1
5484 // need these in order to be polite about older agents
5485 #define JVMPI_VERSION_1   ((jint)0x10000001)
5486 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5487 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5488 #endif // !JVMPI_VERSION_1
5489 
5490   Thread* thread = ThreadLocalStorage::thread();
5491   if (thread != NULL && thread->is_Java_thread()) {
5492     if (Threads::is_supported_jni_version_including_1_1(version)) {
5493       *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5494       ret = JNI_OK;
5495       return ret;
5496 
5497     } else if (version == JVMPI_VERSION_1 ||
5498                version == JVMPI_VERSION_1_1 ||
5499                version == JVMPI_VERSION_1_2) {
5500       tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5501       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5502       ret = JNI_EVERSION;
5503       return ret;
5504     } else if (JvmtiExport::is_jvmdi_version(version)) {
5505       tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5506       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5507       ret = JNI_EVERSION;
5508       return ret;
5509     } else {
5510       *penv = NULL;
5511       ret = JNI_EVERSION;
5512       return ret;
5513     }
5514   } else {
5515     *penv = NULL;
5516     ret = JNI_EDETACHED;
5517     return ret;
5518   }
5519 }
5520 
5521 
5522 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5523 #ifndef USDT2
5524   DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5525 #else /* USDT2 */
5526   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5527                                                 vm, penv, _args);
5528 #endif /* USDT2 */
5529   if (!vm_created) {
5530 #ifndef USDT2
5531     DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5532 #else /* USDT2 */
5533   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5534                                                  (uint32_t) JNI_ERR);
5535 #endif /* USDT2 */
5536     return JNI_ERR;
5537   }
5538 
5539   JNIWrapper("AttachCurrentThreadAsDaemon");
5540   jint ret = attach_current_thread(vm, penv, _args, true);
5541 #ifndef USDT2
5542   DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5543 #else /* USDT2 */
5544   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5545                                                  ret);
5546 #endif /* USDT2 */
5547   return ret;
5548 }
5549 
5550 
5551 } // End extern "C"
5552 
5553 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5554     NULL,
5555     NULL,
5556     NULL,
5557 
5558     jni_DestroyJavaVM,
5559     jni_AttachCurrentThread,
5560     jni_DetachCurrentThread,
5561     jni_GetEnv,
5562     jni_AttachCurrentThreadAsDaemon
5563 };