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/altHashing.hpp"
  27 #include "classfile/classLoader.hpp"
  28 #include "classfile/javaClasses.hpp"
  29 #include "classfile/symbolTable.hpp"
  30 #include "classfile/systemDictionary.hpp"
  31 #include "classfile/vmSymbols.hpp"
  32 #include "interpreter/linkResolver.hpp"
  33 #ifndef SERIALGC
  34 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
  35 #endif // SERIALGC
  36 #include "memory/allocation.hpp"
  37 #include "memory/allocation.inline.hpp"
  38 #include "memory/gcLocker.inline.hpp"
  39 #include "memory/oopFactory.hpp"
  40 #include "memory/universe.inline.hpp"
  41 #include "oops/instanceKlass.hpp"
  42 #include "oops/instanceOop.hpp"
  43 #include "oops/markOop.hpp"
  44 #include "oops/method.hpp"
  45 #include "oops/objArrayKlass.hpp"
  46 #include "oops/objArrayOop.hpp"
  47 #include "oops/oop.inline.hpp"
  48 #include "oops/symbol.hpp"
  49 #include "oops/typeArrayKlass.hpp"
  50 #include "oops/typeArrayOop.hpp"
  51 #include "prims/jni.h"
  52 #include "prims/jniCheck.hpp"
  53 #include "prims/jniExport.hpp"
  54 #include "prims/jniFastGetField.hpp"
  55 #include "prims/jvm.h"
  56 #include "prims/jvm_misc.hpp"
  57 #include "prims/jvmtiExport.hpp"
  58 #include "prims/jvmtiThreadState.hpp"
  59 #include "runtime/compilationPolicy.hpp"
  60 #include "runtime/fieldDescriptor.hpp"
  61 #include "runtime/fprofiler.hpp"
  62 #include "runtime/handles.inline.hpp"
  63 #include "runtime/interfaceSupport.hpp"
  64 #include "runtime/java.hpp"
  65 #include "runtime/javaCalls.hpp"
  66 #include "runtime/jfieldIDWorkaround.hpp"
  67 #include "runtime/reflection.hpp"
  68 #include "runtime/sharedRuntime.hpp"
  69 #include "runtime/signature.hpp"
  70 #include "runtime/vm_operations.hpp"
  71 #include "services/runtimeService.hpp"
  72 #include "trace/tracing.hpp"
  73 #include "trace/traceEventTypes.hpp"
  74 #include "utilities/defaultStream.hpp"
  75 #include "utilities/dtrace.hpp"
  76 #include "utilities/events.hpp"
  77 #include "utilities/histogram.hpp"
  78 #ifdef TARGET_OS_FAMILY_linux
  79 # include "os_linux.inline.hpp"
  80 # include "thread_linux.inline.hpp"
  81 #endif
  82 #ifdef TARGET_OS_FAMILY_solaris
  83 # include "os_solaris.inline.hpp"
  84 # include "thread_solaris.inline.hpp"
  85 #endif
  86 #ifdef TARGET_OS_FAMILY_windows
  87 # include "os_windows.inline.hpp"
  88 # include "thread_windows.inline.hpp"
  89 #endif
  90 #ifdef TARGET_OS_FAMILY_bsd
  91 # include "os_bsd.inline.hpp"
  92 # include "thread_bsd.inline.hpp"
  93 #endif
  94 
  95 static jint CurrentVersion = JNI_VERSION_1_6;
  96 
  97 
  98 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
  99 // '-return' probe regardless of the return path is taken out of the function.
 100 // Methods that have multiple return paths use this to avoid having to
 101 // instrument each return path.  Methods that use CHECK or THROW must use this
 102 // since those macros can cause an immedate uninstrumented return.
 103 //
 104 // In order to get the return value, a reference to the variable containing
 105 // the return value must be passed to the contructor of the object, and
 106 // the return value must be set before return (since the mark object has
 107 // a reference to it).
 108 //
 109 // Example:
 110 // DT_RETURN_MARK_DECL(SomeFunc, int);
 111 // JNI_ENTRY(int, SomeFunc, ...)
 112 //   int return_value = 0;
 113 //   DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
 114 //   foo(CHECK_0)
 115 //   return_value = 5;
 116 //   return return_value;
 117 // JNI_END
 118 #ifndef USDT2
 119 #define DT_RETURN_MARK_DECL(name, type)                                    \
 120   HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type);                \
 121   DTRACE_ONLY(                                                             \
 122     class DTraceReturnProbeMark_##name {                                   \
 123      public:                                                               \
 124       const type& _ret_ref;                                                \
 125       DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {}         \
 126       ~DTraceReturnProbeMark_##name() {                                    \
 127         HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref);           \
 128       }                                                                    \
 129     }                                                                      \
 130   )
 131 // Void functions are simpler since there's no return value
 132 #define DT_VOID_RETURN_MARK_DECL(name)                                     \
 133   HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return);                      \
 134   DTRACE_ONLY(                                                             \
 135     class DTraceReturnProbeMark_##name {                                   \
 136      public:                                                               \
 137       ~DTraceReturnProbeMark_##name() {                                    \
 138         HS_DTRACE_PROBE0(hotspot_jni, name##__return);                     \
 139       }                                                                    \
 140     }                                                                      \
 141   )
 142 
 143 #else /* USDT2 */
 144 
 145 #define DT_RETURN_MARK_DECL(name, type, probe)                             \
 146   DTRACE_ONLY(                                                             \
 147     class DTraceReturnProbeMark_##name {                                   \
 148      public:                                                               \
 149       const type& _ret_ref;                                                \
 150       DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {}         \
 151       ~DTraceReturnProbeMark_##name() {                                    \
 152         probe;                                                             \
 153       }                                                                    \
 154     }                                                                      \
 155   )
 156 // Void functions are simpler since there's no return value
 157 #define DT_VOID_RETURN_MARK_DECL(name, probe)                              \
 158   DTRACE_ONLY(                                                             \
 159     class DTraceReturnProbeMark_##name {                                   \
 160      public:                                                               \
 161       ~DTraceReturnProbeMark_##name() {                                    \
 162         probe;                                                             \
 163       }                                                                    \
 164     }                                                                      \
 165   )
 166 #endif /* USDT2 */
 167 
 168 // Place these macros in the function to mark the return.  Non-void
 169 // functions need the type and address of the return value.
 170 #define DT_RETURN_MARK(name, type, ref) \
 171   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
 172 #define DT_VOID_RETURN_MARK(name) \
 173   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
 174 
 175 
 176 // Use these to select distinct code for floating-point vs. non-floating point
 177 // situations.  Used from within common macros where we need slightly
 178 // different behavior for Float/Double
 179 #define FP_SELECT_Boolean(intcode, fpcode) intcode
 180 #define FP_SELECT_Byte(intcode, fpcode)    intcode
 181 #define FP_SELECT_Char(intcode, fpcode)    intcode
 182 #define FP_SELECT_Short(intcode, fpcode)   intcode
 183 #define FP_SELECT_Object(intcode, fpcode)  intcode
 184 #define FP_SELECT_Int(intcode, fpcode)     intcode
 185 #define FP_SELECT_Long(intcode, fpcode)    intcode
 186 #define FP_SELECT_Float(intcode, fpcode)   fpcode
 187 #define FP_SELECT_Double(intcode, fpcode)  fpcode
 188 #define FP_SELECT(TypeName, intcode, fpcode) \
 189   FP_SELECT_##TypeName(intcode, fpcode)
 190 
 191 #define COMMA ,
 192 
 193 // Choose DT_RETURN_MARK macros  based on the type: float/double -> void
 194 // (dtrace doesn't do FP yet)
 195 #ifndef USDT2
 196 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
 197   FP_SELECT(TypeName, \
 198     DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
 199 #else /* USDT2 */
 200 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe)    \
 201   FP_SELECT(TypeName, \
 202     DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
 203 #endif /* USDT2 */
 204 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
 205   FP_SELECT(TypeName, \
 206     DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
 207 
 208 
 209 // out-of-line helpers for class jfieldIDWorkaround:
 210 
 211 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
 212   if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
 213     uintptr_t as_uint = (uintptr_t) id;
 214     intptr_t offset = raw_instance_offset(id);
 215     if (is_checked_jfieldID(id)) {
 216       if (!klass_hash_ok(k, id)) {
 217         return false;
 218       }
 219     }
 220     return InstanceKlass::cast(k)->contains_field_offset(offset);
 221   } else {
 222     JNIid* result = (JNIid*) id;
 223 #ifdef ASSERT
 224     return result != NULL && result->is_static_field_id();
 225 #else
 226     return result != NULL;
 227 #endif
 228   }
 229 }
 230 
 231 
 232 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
 233   if (offset <= small_offset_mask) {
 234     Klass* field_klass = k;
 235     Klass* super_klass = Klass::cast(field_klass)->super();
 236     // With compressed oops the most super class with nonstatic fields would
 237     // be the owner of fields embedded in the header.
 238     while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
 239            InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
 240       field_klass = super_klass;   // super contains the field also
 241       super_klass = Klass::cast(field_klass)->super();
 242     }
 243     debug_only(No_Safepoint_Verifier nosafepoint;)
 244     uintptr_t klass_hash = field_klass->identity_hash();
 245     return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
 246   } else {
 247 #if 0
 248     #ifndef PRODUCT
 249     {
 250       ResourceMark rm;
 251       warning("VerifyJNIFields: long offset %d in %s", offset, Klass::cast(k)->external_name());
 252     }
 253     #endif
 254 #endif
 255     return 0;
 256   }
 257 }
 258 
 259 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
 260   uintptr_t as_uint = (uintptr_t) id;
 261   intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
 262   do {
 263     debug_only(No_Safepoint_Verifier nosafepoint;)
 264     // Could use a non-blocking query for identity_hash here...
 265     if ((k->identity_hash() & klass_mask) == klass_hash)
 266       return true;
 267     k = Klass::cast(k)->super();
 268   } while (k != NULL);
 269   return false;
 270 }
 271 
 272 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
 273   guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
 274   uintptr_t as_uint = (uintptr_t) id;
 275   intptr_t offset = raw_instance_offset(id);
 276   if (VerifyJNIFields) {
 277     if (is_checked_jfieldID(id)) {
 278       guarantee(klass_hash_ok(k, id),
 279     "Bug in native code: jfieldID class must match object");
 280     } else {
 281 #if 0
 282       #ifndef PRODUCT
 283       if (Verbose) {
 284   ResourceMark rm;
 285   warning("VerifyJNIFields: unverified offset %d for %s", offset, Klass::cast(k)->external_name());
 286       }
 287       #endif
 288 #endif
 289     }
 290   }
 291   guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
 292       "Bug in native code: jfieldID offset must address interior of object");
 293 }
 294 
 295 // Pick a reasonable higher bound for local capacity requested
 296 // for EnsureLocalCapacity and PushLocalFrame.  We don't want it too
 297 // high because a test (or very unusual application) may try to allocate
 298 // that many handles and run out of swap space.  An implementation is
 299 // permitted to allocate more handles than the ensured capacity, so this
 300 // value is set high enough to prevent compatibility problems.
 301 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
 302 
 303 
 304 // Wrapper to trace JNI functions
 305 
 306 #ifdef ASSERT
 307   Histogram* JNIHistogram;
 308   static volatile jint JNIHistogram_lock = 0;
 309 
 310   class JNITraceWrapper : public StackObj {
 311    public:
 312     JNITraceWrapper(const char* format, ...) {
 313       if (TraceJNICalls) {
 314         va_list ap;
 315         va_start(ap, format);
 316         tty->print("JNI ");
 317         tty->vprint_cr(format, ap);
 318         va_end(ap);
 319       }
 320     }
 321   };
 322 
 323   class JNIHistogramElement : public HistogramElement {
 324     public:
 325      JNIHistogramElement(const char* name);
 326   };
 327 
 328   JNIHistogramElement::JNIHistogramElement(const char* elementName) {
 329     _name = elementName;
 330     uintx count = 0;
 331 
 332     while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
 333       while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
 334         count +=1;
 335         if ( (WarnOnStalledSpinLock > 0)
 336           && (count % WarnOnStalledSpinLock == 0)) {
 337           warning("JNIHistogram_lock seems to be stalled");
 338         }
 339       }
 340      }
 341 
 342 
 343     if(JNIHistogram == NULL)
 344       JNIHistogram = new Histogram("JNI Call Counts",100);
 345 
 346     JNIHistogram->add_element(this);
 347     Atomic::dec(&JNIHistogram_lock);
 348   }
 349 
 350   #define JNICountWrapper(arg)                                     \
 351      static JNIHistogramElement* e = new JNIHistogramElement(arg); \
 352       /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
 353      if (e != NULL) e->increment_count()
 354   #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
 355 #else
 356   #define JNIWrapper(arg)
 357 #endif
 358 
 359 
 360 // Implementation of JNI entries
 361 
 362 #ifndef USDT2
 363 DT_RETURN_MARK_DECL(DefineClass, jclass);
 364 #else /* USDT2 */
 365 DT_RETURN_MARK_DECL(DefineClass, jclass
 366                     , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
 367 #endif /* USDT2 */
 368 
 369 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
 370                                   const jbyte *buf, jsize bufLen))
 371   JNIWrapper("DefineClass");
 372 
 373 #ifndef USDT2
 374   DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
 375     env, name, loaderRef, buf, bufLen);
 376 #else /* USDT2 */
 377   HOTSPOT_JNI_DEFINECLASS_ENTRY(
 378     env, (char*) name, loaderRef, (char*) buf, bufLen);
 379 #endif /* USDT2 */
 380   jclass cls = NULL;
 381   DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
 382 
 383   TempNewSymbol class_name = NULL;
 384   // Since exceptions can be thrown, class initialization can take place
 385   // if name is NULL no check for class name in .class stream has to be made.
 386   if (name != NULL) {
 387     const int str_len = (int)strlen(name);
 388     if (str_len > Symbol::max_length()) {
 389       // It's impossible to create this class;  the name cannot fit
 390       // into the constant pool.
 391       THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
 392     }
 393     class_name = SymbolTable::new_symbol(name, CHECK_NULL);
 394   }
 395   ResourceMark rm(THREAD);
 396   ClassFileStream st((u1*) buf, bufLen, NULL);
 397   Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
 398 
 399   if (UsePerfData && !class_loader.is_null()) {
 400     // check whether the current caller thread holds the lock or not.
 401     // If not, increment the corresponding counter
 402     if (ObjectSynchronizer::
 403         query_lock_ownership((JavaThread*)THREAD, class_loader) !=
 404         ObjectSynchronizer::owner_self) {
 405       ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
 406     }
 407   }
 408   Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
 409                                                      Handle(), &st, true,
 410                                                      CHECK_NULL);
 411 
 412   if (TraceClassResolution && k != NULL) {
 413     trace_class_resolution(k);
 414   }
 415 
 416   cls = (jclass)JNIHandles::make_local(
 417     env, Klass::cast(k)->java_mirror());
 418   return cls;
 419 JNI_END
 420 
 421 
 422 
 423 static bool first_time_FindClass = true;
 424 
 425 #ifndef USDT2
 426 DT_RETURN_MARK_DECL(FindClass, jclass);
 427 #else /* USDT2 */
 428 DT_RETURN_MARK_DECL(FindClass, jclass
 429                     , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
 430 #endif /* USDT2 */
 431 
 432 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
 433   JNIWrapper("FindClass");
 434 #ifndef USDT2
 435   DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
 436 #else /* USDT2 */
 437   HOTSPOT_JNI_FINDCLASS_ENTRY(
 438                               env, (char *)name);
 439 #endif /* USDT2 */
 440 
 441   jclass result = NULL;
 442   DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
 443 
 444   // Remember if we are the first invocation of jni_FindClass
 445   bool first_time = first_time_FindClass;
 446   first_time_FindClass = false;
 447 
 448   // Sanity check the name:  it cannot be null or larger than the maximum size
 449   // name we can fit in the constant pool.
 450   if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
 451     THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
 452   }
 453 
 454   //%note jni_3
 455   Handle loader;
 456   Handle protection_domain;
 457   // Find calling class
 458   instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
 459   if (k.not_null()) {
 460     loader = Handle(THREAD, k->class_loader());
 461     // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
 462     // in the correct class context.
 463     if (loader.is_null() &&
 464         k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
 465       JavaValue result(T_OBJECT);
 466       JavaCalls::call_static(&result, k,
 467                                       vmSymbols::getFromClass_name(),
 468                                       vmSymbols::void_class_signature(),
 469                                       thread);
 470       if (HAS_PENDING_EXCEPTION) {
 471         Handle ex(thread, thread->pending_exception());
 472         CLEAR_PENDING_EXCEPTION;
 473         THROW_HANDLE_0(ex);
 474       }
 475       oop mirror = (oop) result.get_jobject();
 476       loader = Handle(THREAD,
 477         InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
 478       protection_domain = Handle(THREAD,
 479         InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
 480     }
 481   } else {
 482     // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
 483     loader = Handle(THREAD, SystemDictionary::java_system_loader());
 484   }
 485 
 486   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
 487   result = find_class_from_class_loader(env, sym, true, loader,
 488                                         protection_domain, true, thread);
 489 
 490   if (TraceClassResolution && result != NULL) {
 491     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
 492   }
 493 
 494   // If we were the first invocation of jni_FindClass, we enable compilation again
 495   // rather than just allowing invocation counter to overflow and decay.
 496   // Controlled by flag DelayCompilationDuringStartup.
 497   if (first_time && !CompileTheWorld)
 498     CompilationPolicy::completed_vm_startup();
 499 
 500   return result;
 501 JNI_END
 502 
 503 #ifndef USDT2
 504 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
 505 #else /* USDT2 */
 506 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
 507                     , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
 508 #endif /* USDT2 */
 509 
 510 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
 511   JNIWrapper("FromReflectedMethod");
 512 #ifndef USDT2
 513   DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
 514 #else /* USDT2 */
 515   HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
 516                                         env, method);
 517 #endif /* USDT2 */
 518   jmethodID ret = NULL;
 519   DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
 520 
 521   // method is a handle to a java.lang.reflect.Method object
 522   oop reflected  = JNIHandles::resolve_non_null(method);
 523   oop mirror     = NULL;
 524   int slot       = 0;
 525 
 526   if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
 527     mirror = java_lang_reflect_Constructor::clazz(reflected);
 528     slot   = java_lang_reflect_Constructor::slot(reflected);
 529   } else {
 530     assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
 531     mirror = java_lang_reflect_Method::clazz(reflected);
 532     slot   = java_lang_reflect_Method::slot(reflected);
 533   }
 534   Klass* k     = java_lang_Class::as_Klass(mirror);
 535 
 536   KlassHandle k1(THREAD, k);
 537   // Make sure class is initialized before handing id's out to methods
 538   Klass::cast(k1())->initialize(CHECK_NULL);
 539   Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
 540   ret = m==NULL? NULL : m->jmethod_id();  // return NULL if reflected method deleted
 541   return ret;
 542 JNI_END
 543 
 544 #ifndef USDT2
 545 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
 546 #else /* USDT2 */
 547 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
 548                     , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
 549 #endif /* USDT2 */
 550 
 551 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
 552   JNIWrapper("FromReflectedField");
 553 #ifndef USDT2
 554   DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
 555 #else /* USDT2 */
 556   HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
 557                                        env, field);
 558 #endif /* USDT2 */
 559   jfieldID ret = NULL;
 560   DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
 561 
 562   // field is a handle to a java.lang.reflect.Field object
 563   oop reflected   = JNIHandles::resolve_non_null(field);
 564   oop mirror      = java_lang_reflect_Field::clazz(reflected);
 565   Klass* k      = java_lang_Class::as_Klass(mirror);
 566   int slot        = java_lang_reflect_Field::slot(reflected);
 567   int modifiers   = java_lang_reflect_Field::modifiers(reflected);
 568 
 569   KlassHandle k1(THREAD, k);
 570   // Make sure class is initialized before handing id's out to fields
 571   Klass::cast(k1())->initialize(CHECK_NULL);
 572 
 573   // First check if this is a static field
 574   if (modifiers & JVM_ACC_STATIC) {
 575     intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
 576     JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
 577     assert(id != NULL, "corrupt Field object");
 578     debug_only(id->set_is_static_field_id();)
 579     // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
 580     ret = jfieldIDWorkaround::to_static_jfieldID(id);
 581     return ret;
 582   }
 583 
 584   // The slot is the index of the field description in the field-array
 585   // The jfieldID is the offset of the field within the object
 586   // It may also have hash bits for k, if VerifyJNIFields is turned on.
 587   intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
 588   assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
 589   ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
 590   return ret;
 591 JNI_END
 592 
 593 #ifndef USDT2
 594 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
 595 #else /* USDT2 */
 596 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
 597                     , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
 598 #endif /* USDT2 */
 599 
 600 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
 601   JNIWrapper("ToReflectedMethod");
 602 #ifndef USDT2
 603   DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
 604 #else /* USDT2 */
 605   HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
 606                                       env, cls, (uintptr_t) method_id, isStatic);
 607 #endif /* USDT2 */
 608   jobject ret = NULL;
 609   DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
 610 
 611   methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
 612   assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
 613   oop reflection_method;
 614   if (m->is_initializer()) {
 615     reflection_method = Reflection::new_constructor(m, CHECK_NULL);
 616   } else {
 617     reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
 618   }
 619   ret = JNIHandles::make_local(env, reflection_method);
 620   return ret;
 621 JNI_END
 622 
 623 #ifndef USDT2
 624 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
 625 #else /* USDT2 */
 626 DT_RETURN_MARK_DECL(GetSuperclass, jclass
 627                     , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
 628 #endif /* USDT2 */
 629 
 630 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
 631   JNIWrapper("GetSuperclass");
 632 #ifndef USDT2
 633   DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
 634 #else /* USDT2 */
 635   HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
 636                                   env, sub);
 637 #endif /* USDT2 */
 638   jclass obj = NULL;
 639   DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
 640 
 641   oop mirror = JNIHandles::resolve_non_null(sub);
 642   // primitive classes return NULL
 643   if (java_lang_Class::is_primitive(mirror)) return NULL;
 644 
 645   // Rules of Class.getSuperClass as implemented by KLass::java_super:
 646   // arrays return Object
 647   // interfaces return NULL
 648   // proper classes return Klass::super()
 649   Klass* k = java_lang_Class::as_Klass(mirror);
 650   if (Klass::cast(k)->is_interface()) return NULL;
 651 
 652   // return mirror for superclass
 653   Klass* super = Klass::cast(k)->java_super();
 654   // super2 is the value computed by the compiler's getSuperClass intrinsic:
 655   debug_only(Klass* super2 = ( Klass::cast(k)->oop_is_array()
 656                                  ? SystemDictionary::Object_klass()
 657                                  : Klass::cast(k)->super() ) );
 658   assert(super == super2,
 659          "java_super computation depends on interface, array, other super");
 660   obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(Klass::cast(super)->java_mirror());
 661   return obj;
 662 JNI_END
 663 
 664 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
 665   JNIWrapper("IsSubclassOf");
 666 #ifndef USDT2
 667   DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
 668 #else /* USDT2 */
 669   HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
 670                                      env, sub, super);
 671 #endif /* USDT2 */
 672   oop sub_mirror   = JNIHandles::resolve_non_null(sub);
 673   oop super_mirror = JNIHandles::resolve_non_null(super);
 674   if (java_lang_Class::is_primitive(sub_mirror) ||
 675       java_lang_Class::is_primitive(super_mirror)) {
 676     jboolean ret = (sub_mirror == super_mirror);
 677 #ifndef USDT2
 678     DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
 679 #else /* USDT2 */
 680     HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
 681                                         ret);
 682 #endif /* USDT2 */
 683     return ret;
 684   }
 685   Klass* sub_klass   = java_lang_Class::as_Klass(sub_mirror);
 686   Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
 687   assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
 688   jboolean ret = Klass::cast(sub_klass)->is_subtype_of(super_klass) ?
 689                    JNI_TRUE : JNI_FALSE;
 690 #ifndef USDT2
 691   DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
 692 #else /* USDT2 */
 693   HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
 694                                       ret);
 695 #endif /* USDT2 */
 696   return ret;
 697 JNI_END
 698 
 699 #ifndef USDT2
 700 DT_RETURN_MARK_DECL(Throw, jint);
 701 #else /* USDT2 */
 702 DT_RETURN_MARK_DECL(Throw, jint
 703                     , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
 704 #endif /* USDT2 */
 705 
 706 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
 707   JNIWrapper("Throw");
 708 #ifndef USDT2
 709   DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
 710 #else /* USDT2 */
 711   HOTSPOT_JNI_THROW_ENTRY(
 712  env, obj);
 713 #endif /* USDT2 */
 714   jint ret = JNI_OK;
 715   DT_RETURN_MARK(Throw, jint, (const jint&)ret);
 716 
 717   THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
 718   ShouldNotReachHere();
 719 JNI_END
 720 
 721 #ifndef USDT2
 722 DT_RETURN_MARK_DECL(ThrowNew, jint);
 723 #else /* USDT2 */
 724 DT_RETURN_MARK_DECL(ThrowNew, jint
 725                     , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
 726 #endif /* USDT2 */
 727 
 728 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
 729   JNIWrapper("ThrowNew");
 730 #ifndef USDT2
 731   DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
 732 #else /* USDT2 */
 733   HOTSPOT_JNI_THROWNEW_ENTRY(
 734                              env, clazz, (char *) message);
 735 #endif /* USDT2 */
 736   jint ret = JNI_OK;
 737   DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
 738 
 739   InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
 740   Symbol*  name = k->name();
 741   Handle class_loader (THREAD,  k->class_loader());
 742   Handle protection_domain (THREAD, k->protection_domain());
 743   THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
 744   ShouldNotReachHere();
 745 JNI_END
 746 
 747 
 748 // JNI functions only transform a pending async exception to a synchronous
 749 // exception in ExceptionOccurred and ExceptionCheck calls, since
 750 // delivering an async exception in other places won't change the native
 751 // code's control flow and would be harmful when native code further calls
 752 // JNI functions with a pending exception. Async exception is also checked
 753 // during the call, so ExceptionOccurred/ExceptionCheck won't return
 754 // false but deliver the async exception at the very end during
 755 // state transition.
 756 
 757 static void jni_check_async_exceptions(JavaThread *thread) {
 758   assert(thread == Thread::current(), "must be itself");
 759   thread->check_and_handle_async_exceptions();
 760 }
 761 
 762 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
 763   JNIWrapper("ExceptionOccurred");
 764 #ifndef USDT2
 765   DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
 766 #else /* USDT2 */
 767   HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
 768                                       env);
 769 #endif /* USDT2 */
 770   jni_check_async_exceptions(thread);
 771   oop exception = thread->pending_exception();
 772   jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
 773 #ifndef USDT2
 774   DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
 775 #else /* USDT2 */
 776   HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
 777                                        ret);
 778 #endif /* USDT2 */
 779   return ret;
 780 JNI_END
 781 
 782 
 783 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
 784   JNIWrapper("ExceptionDescribe");
 785 #ifndef USDT2
 786   DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
 787 #else /* USDT2 */
 788   HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
 789                                       env);
 790 #endif /* USDT2 */
 791   if (thread->has_pending_exception()) {
 792     Handle ex(thread, thread->pending_exception());
 793     thread->clear_pending_exception();
 794     if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
 795       // Don't print anything if we are being killed.
 796     } else {
 797       jio_fprintf(defaultStream::error_stream(), "Exception ");
 798       if (thread != NULL && thread->threadObj() != NULL) {
 799         ResourceMark rm(THREAD);
 800         jio_fprintf(defaultStream::error_stream(),
 801         "in thread \"%s\" ", thread->get_thread_name());
 802       }
 803       if (ex->is_a(SystemDictionary::Throwable_klass())) {
 804         JavaValue result(T_VOID);
 805         JavaCalls::call_virtual(&result,
 806                                 ex,
 807                                 KlassHandle(THREAD,
 808                                   SystemDictionary::Throwable_klass()),
 809                                 vmSymbols::printStackTrace_name(),
 810                                 vmSymbols::void_method_signature(),
 811                                 THREAD);
 812         // If an exception is thrown in the call it gets thrown away. Not much
 813         // we can do with it. The native code that calls this, does not check
 814         // for the exception - hence, it might still be in the thread when DestroyVM gets
 815         // called, potentially causing a few asserts to trigger - since no pending exception
 816         // is expected.
 817         CLEAR_PENDING_EXCEPTION;
 818       } else {
 819         ResourceMark rm(THREAD);
 820         jio_fprintf(defaultStream::error_stream(),
 821         ". Uncaught exception of type %s.",
 822         Klass::cast(ex->klass())->external_name());
 823       }
 824     }
 825   }
 826 #ifndef USDT2
 827   DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
 828 #else /* USDT2 */
 829   HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
 830                                        );
 831 #endif /* USDT2 */
 832 JNI_END
 833 
 834 
 835 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
 836   JNIWrapper("ExceptionClear");
 837 #ifndef USDT2
 838   DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
 839 #else /* USDT2 */
 840   HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
 841                                    env);
 842 #endif /* USDT2 */
 843 
 844   // The jni code might be using this API to clear java thrown exception.
 845   // So just mark jvmti thread exception state as exception caught.
 846   JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
 847   if (state != NULL && state->is_exception_detected()) {
 848     state->set_exception_caught();
 849   }
 850   thread->clear_pending_exception();
 851 #ifndef USDT2
 852   DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
 853 #else /* USDT2 */
 854   HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
 855                                     );
 856 #endif /* USDT2 */
 857 JNI_END
 858 
 859 
 860 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
 861   JNIWrapper("FatalError");
 862 #ifndef USDT2
 863   DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
 864 #else /* USDT2 */
 865   HOTSPOT_JNI_FATALERROR_ENTRY(
 866                                env, (char *) msg);
 867 #endif /* USDT2 */
 868   tty->print_cr("FATAL ERROR in native method: %s", msg);
 869   thread->print_stack();
 870   os::abort(); // Dump core and abort
 871 JNI_END
 872 
 873 
 874 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
 875   JNIWrapper("PushLocalFrame");
 876 #ifndef USDT2
 877   DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
 878 #else /* USDT2 */
 879   HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
 880                                    env, capacity);
 881 #endif /* USDT2 */
 882   //%note jni_11
 883   if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
 884 #ifndef USDT2
 885     DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
 886 #else /* USDT2 */
 887     HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
 888                                       (uint32_t)JNI_ERR);
 889 #endif /* USDT2 */
 890     return JNI_ERR;
 891   }
 892   JNIHandleBlock* old_handles = thread->active_handles();
 893   JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
 894   assert(new_handles != NULL, "should not be NULL");
 895   new_handles->set_pop_frame_link(old_handles);
 896   thread->set_active_handles(new_handles);
 897   jint ret = JNI_OK;
 898 #ifndef USDT2
 899   DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
 900 #else /* USDT2 */
 901   HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
 902                                     ret);
 903 #endif /* USDT2 */
 904   return ret;
 905 JNI_END
 906 
 907 
 908 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
 909   JNIWrapper("PopLocalFrame");
 910 #ifndef USDT2
 911   DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
 912 #else /* USDT2 */
 913   HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
 914                                   env, result);
 915 #endif /* USDT2 */
 916   //%note jni_11
 917   Handle result_handle(thread, JNIHandles::resolve(result));
 918   JNIHandleBlock* old_handles = thread->active_handles();
 919   JNIHandleBlock* new_handles = old_handles->pop_frame_link();
 920   if (new_handles != NULL) {
 921     // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
 922     // This way code will still work if PopLocalFrame is called without a corresponding
 923     // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
 924     // the release_block call will release the blocks.
 925     thread->set_active_handles(new_handles);
 926     old_handles->set_pop_frame_link(NULL);              // clear link we won't release new_handles below
 927     JNIHandleBlock::release_block(old_handles, thread); // may block
 928     result = JNIHandles::make_local(thread, result_handle());
 929   }
 930 #ifndef USDT2
 931   DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
 932 #else /* USDT2 */
 933   HOTSPOT_JNI_POPLOCALFRAME_RETURN(
 934                                    result);
 935 #endif /* USDT2 */
 936   return result;
 937 JNI_END
 938 
 939 
 940 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
 941   JNIWrapper("NewGlobalRef");
 942 #ifndef USDT2
 943   DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
 944 #else /* USDT2 */
 945   HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
 946                                  env, ref);
 947 #endif /* USDT2 */
 948   Handle ref_handle(thread, JNIHandles::resolve(ref));
 949   jobject ret = JNIHandles::make_global(ref_handle);
 950 #ifndef USDT2
 951   DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
 952 #else /* USDT2 */
 953   HOTSPOT_JNI_NEWGLOBALREF_RETURN(
 954                                   ret);
 955 #endif /* USDT2 */
 956   return ret;
 957 JNI_END
 958 
 959 // Must be JNI_ENTRY (with HandleMark)
 960 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
 961   JNIWrapper("DeleteGlobalRef");
 962 #ifndef USDT2
 963   DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
 964 #else /* USDT2 */
 965   HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
 966                                     env, ref);
 967 #endif /* USDT2 */
 968   JNIHandles::destroy_global(ref);
 969 #ifndef USDT2
 970   DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
 971 #else /* USDT2 */
 972   HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
 973                                      );
 974 #endif /* USDT2 */
 975 JNI_END
 976 
 977 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
 978   JNIWrapper("DeleteLocalRef");
 979 #ifndef USDT2
 980   DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
 981 #else /* USDT2 */
 982   HOTSPOT_JNI_DELETELOCALREF_ENTRY(
 983                                    env, obj);
 984 #endif /* USDT2 */
 985   JNIHandles::destroy_local(obj);
 986 #ifndef USDT2
 987   DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
 988 #else /* USDT2 */
 989   HOTSPOT_JNI_DELETELOCALREF_RETURN(
 990                                     );
 991 #endif /* USDT2 */
 992 JNI_END
 993 
 994 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
 995   JNIWrapper("IsSameObject");
 996 #ifndef USDT2
 997   DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
 998 #else /* USDT2 */
 999   HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
1000                                  env, r1, r2);
1001 #endif /* USDT2 */
1002   oop a = JNIHandles::resolve(r1);
1003   oop b = JNIHandles::resolve(r2);
1004   jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1005 #ifndef USDT2
1006   DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1007 #else /* USDT2 */
1008   HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1009                                   ret);
1010 #endif /* USDT2 */
1011   return ret;
1012 JNI_END
1013 
1014 
1015 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1016   JNIWrapper("NewLocalRef");
1017 #ifndef USDT2
1018   DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1019 #else /* USDT2 */
1020   HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1021                                 env, ref);
1022 #endif /* USDT2 */
1023   jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1024 #ifndef USDT2
1025   DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1026 #else /* USDT2 */
1027   HOTSPOT_JNI_NEWLOCALREF_RETURN(
1028                                  ret);
1029 #endif /* USDT2 */
1030   return ret;
1031 JNI_END
1032 
1033 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1034   JNIWrapper("EnsureLocalCapacity");
1035 #ifndef USDT2
1036   DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1037 #else /* USDT2 */
1038   HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1039                                         env, capacity);
1040 #endif /* USDT2 */
1041   jint ret;
1042   if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1043     ret = JNI_OK;
1044   } else {
1045     ret = JNI_ERR;
1046   }
1047 #ifndef USDT2
1048   DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1049 #else /* USDT2 */
1050   HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1051                                          ret);
1052 #endif /* USDT2 */
1053   return ret;
1054 JNI_END
1055 
1056 // Return the Handle Type
1057 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1058   JNIWrapper("GetObjectRefType");
1059 #ifndef USDT2
1060   DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1061 #else /* USDT2 */
1062   HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1063                                      env, obj);
1064 #endif /* USDT2 */
1065   jobjectRefType ret;
1066   if (JNIHandles::is_local_handle(thread, obj) ||
1067       JNIHandles::is_frame_handle(thread, obj))
1068     ret = JNILocalRefType;
1069   else if (JNIHandles::is_global_handle(obj))
1070     ret = JNIGlobalRefType;
1071   else if (JNIHandles::is_weak_global_handle(obj))
1072     ret = JNIWeakGlobalRefType;
1073   else
1074     ret = JNIInvalidRefType;
1075 #ifndef USDT2
1076   DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1077 #else /* USDT2 */
1078   HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1079                                       (void *) ret);
1080 #endif /* USDT2 */
1081   return ret;
1082 JNI_END
1083 
1084 
1085 class JNI_ArgumentPusher : public SignatureIterator {
1086  protected:
1087   JavaCallArguments*  _arguments;
1088 
1089   virtual void get_bool   () = 0;
1090   virtual void get_char   () = 0;
1091   virtual void get_short  () = 0;
1092   virtual void get_byte   () = 0;
1093   virtual void get_int    () = 0;
1094   virtual void get_long   () = 0;
1095   virtual void get_float  () = 0;
1096   virtual void get_double () = 0;
1097   virtual void get_object () = 0;
1098 
1099   JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1100     this->_return_type = T_ILLEGAL;
1101     _arguments = NULL;
1102   }
1103 
1104  public:
1105   virtual void iterate( uint64_t fingerprint ) = 0;
1106 
1107   void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1108 
1109   inline void do_bool()                     { if (!is_return_type()) get_bool();   }
1110   inline void do_char()                     { if (!is_return_type()) get_char();   }
1111   inline void do_short()                    { if (!is_return_type()) get_short();  }
1112   inline void do_byte()                     { if (!is_return_type()) get_byte();   }
1113   inline void do_int()                      { if (!is_return_type()) get_int();    }
1114   inline void do_long()                     { if (!is_return_type()) get_long();   }
1115   inline void do_float()                    { if (!is_return_type()) get_float();  }
1116   inline void do_double()                   { if (!is_return_type()) get_double(); }
1117   inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1118   inline void do_array(int begin, int end)  { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1119   inline void do_void()                     { }
1120 
1121   JavaCallArguments* arguments()     { return _arguments; }
1122   void push_receiver(Handle h)       { _arguments->push_oop(h); }
1123 };
1124 
1125 
1126 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1127  protected:
1128   va_list _ap;
1129 
1130   inline void get_bool()   { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1131   inline void get_char()   { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1132   inline void get_short()  { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1133   inline void get_byte()   { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1134   inline void get_int()    { _arguments->push_int(va_arg(_ap, jint)); }
1135 
1136   // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1137 
1138   inline void get_long()   { _arguments->push_long(va_arg(_ap, jlong)); }
1139   inline void get_float()  { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1140   inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1141   inline void get_object() { jobject l = va_arg(_ap, jobject);
1142                              _arguments->push_oop(Handle((oop *)l, false)); }
1143 
1144   inline void set_ap(va_list rap) {
1145 #ifdef va_copy
1146     va_copy(_ap, rap);
1147 #elif defined (__va_copy)
1148     __va_copy(_ap, rap);
1149 #else
1150     _ap = rap;
1151 #endif
1152   }
1153 
1154  public:
1155   JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1156        : JNI_ArgumentPusher(signature) {
1157     set_ap(rap);
1158   }
1159   JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1160       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1161     set_ap(rap);
1162   }
1163 
1164   // Optimized path if we have the bitvector form of signature
1165   void iterate( uint64_t fingerprint ) {
1166     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1167     else {
1168       _return_type = (BasicType)((fingerprint >> static_feature_size) &
1169                                   result_feature_mask);
1170 
1171       assert(fingerprint, "Fingerprint should not be 0");
1172       fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1173       while ( 1 ) {
1174         switch ( fingerprint & parameter_feature_mask ) {
1175           case bool_parm:
1176           case char_parm:
1177           case short_parm:
1178           case byte_parm:
1179           case int_parm:
1180             get_int();
1181             break;
1182           case obj_parm:
1183             get_object();
1184             break;
1185           case long_parm:
1186             get_long();
1187             break;
1188           case float_parm:
1189             get_float();
1190             break;
1191           case double_parm:
1192             get_double();
1193             break;
1194           case done_parm:
1195             return;
1196             break;
1197           default:
1198             ShouldNotReachHere();
1199             break;
1200         }
1201         fingerprint >>= parameter_feature_size;
1202       }
1203     }
1204   }
1205 };
1206 
1207 
1208 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1209  protected:
1210   const jvalue *_ap;
1211 
1212   inline void get_bool()   { _arguments->push_int((jint)(_ap++)->z); }
1213   inline void get_char()   { _arguments->push_int((jint)(_ap++)->c); }
1214   inline void get_short()  { _arguments->push_int((jint)(_ap++)->s); }
1215   inline void get_byte()   { _arguments->push_int((jint)(_ap++)->b); }
1216   inline void get_int()    { _arguments->push_int((jint)(_ap++)->i); }
1217 
1218   inline void get_long()   { _arguments->push_long((_ap++)->j);  }
1219   inline void get_float()  { _arguments->push_float((_ap++)->f); }
1220   inline void get_double() { _arguments->push_double((_ap++)->d);}
1221   inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1222 
1223   inline void set_ap(const jvalue *rap) { _ap = rap; }
1224 
1225  public:
1226   JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1227        : JNI_ArgumentPusher(signature) {
1228     set_ap(rap);
1229   }
1230   JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1231       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1232     set_ap(rap);
1233   }
1234 
1235   // Optimized path if we have the bitvector form of signature
1236   void iterate( uint64_t fingerprint ) {
1237     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1238     else {
1239       _return_type = (BasicType)((fingerprint >> static_feature_size) &
1240                                   result_feature_mask);
1241       assert(fingerprint, "Fingerprint should not be 0");
1242       fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1243       while ( 1 ) {
1244         switch ( fingerprint & parameter_feature_mask ) {
1245           case bool_parm:
1246             get_bool();
1247             break;
1248           case char_parm:
1249             get_char();
1250             break;
1251           case short_parm:
1252             get_short();
1253             break;
1254           case byte_parm:
1255             get_byte();
1256             break;
1257           case int_parm:
1258             get_int();
1259             break;
1260           case obj_parm:
1261             get_object();
1262             break;
1263           case long_parm:
1264             get_long();
1265             break;
1266           case float_parm:
1267             get_float();
1268             break;
1269           case double_parm:
1270             get_double();
1271             break;
1272           case done_parm:
1273             return;
1274             break;
1275           default:
1276             ShouldNotReachHere();
1277             break;
1278         }
1279         fingerprint >>= parameter_feature_size;
1280       }
1281     }
1282   }
1283 };
1284 
1285 
1286 enum JNICallType {
1287   JNI_STATIC,
1288   JNI_VIRTUAL,
1289   JNI_NONVIRTUAL
1290 };
1291 
1292 static methodHandle jni_resolve_interface_call(Handle recv, methodHandle method, TRAPS) {
1293   assert(!method.is_null() , "method should not be null");
1294 
1295   KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1296   if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1297   KlassHandle spec_klass (THREAD, method->method_holder());
1298   Symbol*  name  = method->name();
1299   Symbol*  signature  = method->signature();
1300   CallInfo info;
1301   LinkResolver::resolve_interface_call(info, recv, recv_klass,  spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1302   return info.selected_method();
1303 }
1304 
1305 static methodHandle jni_resolve_virtual_call(Handle recv, methodHandle method, TRAPS) {
1306   assert(!method.is_null() , "method should not be null");
1307 
1308   KlassHandle recv_klass; // Default to NULL (use of ?: can confuse gcc)
1309   if (recv.not_null()) recv_klass = KlassHandle(THREAD, recv->klass());
1310   KlassHandle spec_klass (THREAD, method->method_holder());
1311   Symbol*  name  = method->name();
1312   Symbol*  signature  = method->signature();
1313   CallInfo info;
1314   LinkResolver::resolve_virtual_call(info, recv, recv_klass,  spec_klass, name, signature, KlassHandle(), false, true, CHECK_(methodHandle()));
1315   return info.selected_method();
1316 }
1317 
1318 
1319 
1320 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1321   methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1322 
1323   // Create object to hold arguments for the JavaCall, and associate it with
1324   // the jni parser
1325   ResourceMark rm(THREAD);
1326   int number_of_parameters = method->size_of_parameters();
1327   JavaCallArguments java_args(number_of_parameters);
1328   args->set_java_argument_object(&java_args);
1329 
1330   assert(method->is_static(), "method should be static");
1331 
1332   // Fill out JavaCallArguments object
1333   args->iterate( Fingerprinter(method).fingerprint() );
1334   // Initialize result type
1335   result->set_type(args->get_ret_type());
1336 
1337   // Invoke the method. Result is returned as oop.
1338   JavaCalls::call(result, method, &java_args, CHECK);
1339 
1340   // Convert result
1341   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1342     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1343   }
1344 }
1345 
1346 
1347 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1348   oop recv = JNIHandles::resolve(receiver);
1349   if (recv == NULL) {
1350     THROW(vmSymbols::java_lang_NullPointerException());
1351   }
1352   Handle h_recv(THREAD, recv);
1353 
1354   int number_of_parameters;
1355   Method* selected_method;
1356   {
1357     Method* m = Method::resolve_jmethod_id(method_id);
1358     number_of_parameters = m->size_of_parameters();
1359     Klass* holder = m->method_holder();
1360     if (!(Klass::cast(holder))->is_interface()) {
1361       // non-interface call -- for that little speed boost, don't handlize
1362       debug_only(No_Safepoint_Verifier nosafepoint;)
1363       if (call_type == JNI_VIRTUAL) {
1364         // jni_GetMethodID makes sure class is linked and initialized
1365         // so m should have a valid vtable index.
1366         int vtbl_index = m->vtable_index();
1367         if (vtbl_index != Method::nonvirtual_vtable_index) {
1368           Klass* k = h_recv->klass();
1369           // k might be an arrayKlassOop but all vtables start at
1370           // the same place. The cast is to avoid virtual call and assertion.
1371           InstanceKlass *ik = (InstanceKlass*)k;
1372           selected_method = ik->method_at_vtable(vtbl_index);
1373         } else {
1374           // final method
1375           selected_method = m;
1376         }
1377       } else {
1378         // JNI_NONVIRTUAL call
1379         selected_method = m;
1380       }
1381     } else {
1382       // interface call
1383       KlassHandle h_holder(THREAD, holder);
1384 
1385       int itbl_index = m->cached_itable_index();
1386       if (itbl_index == -1) {
1387         itbl_index = klassItable::compute_itable_index(m);
1388         m->set_cached_itable_index(itbl_index);
1389         // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
1390       }
1391       Klass* k = h_recv->klass();
1392       selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1393     }
1394   }
1395 
1396   methodHandle method(THREAD, selected_method);
1397 
1398   // Create object to hold arguments for the JavaCall, and associate it with
1399   // the jni parser
1400   ResourceMark rm(THREAD);
1401   JavaCallArguments java_args(number_of_parameters);
1402   args->set_java_argument_object(&java_args);
1403 
1404   // handle arguments
1405   assert(!method->is_static(), "method should not be static");
1406   args->push_receiver(h_recv); // Push jobject handle
1407 
1408   // Fill out JavaCallArguments object
1409   args->iterate( Fingerprinter(method).fingerprint() );
1410   // Initialize result type
1411   result->set_type(args->get_ret_type());
1412 
1413   // Invoke the method. Result is returned as oop.
1414   JavaCalls::call(result, method, &java_args, CHECK);
1415 
1416   // Convert result
1417   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1418     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1419   }
1420 }
1421 
1422 
1423 static instanceOop alloc_object(jclass clazz, TRAPS) {
1424   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1425   Klass::cast(k())->check_valid_for_instantiation(false, CHECK_NULL);
1426   InstanceKlass::cast(k())->initialize(CHECK_NULL);
1427   instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1428   return ih;
1429 }
1430 
1431 #ifndef USDT2
1432 DT_RETURN_MARK_DECL(AllocObject, jobject);
1433 #else /* USDT2 */
1434 DT_RETURN_MARK_DECL(AllocObject, jobject
1435                     , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1436 #endif /* USDT2 */
1437 
1438 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1439   JNIWrapper("AllocObject");
1440 
1441 #ifndef USDT2
1442   DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1443 #else /* USDT2 */
1444   HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1445                                 env, clazz);
1446 #endif /* USDT2 */
1447   jobject ret = NULL;
1448   DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1449 
1450   instanceOop i = alloc_object(clazz, CHECK_NULL);
1451   ret = JNIHandles::make_local(env, i);
1452   return ret;
1453 JNI_END
1454 
1455 #ifndef USDT2
1456 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1457 #else /* USDT2 */
1458 DT_RETURN_MARK_DECL(NewObjectA, jobject
1459                     , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1460 #endif /* USDT2 */
1461 
1462 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1463   JNIWrapper("NewObjectA");
1464 #ifndef USDT2
1465   DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1466 #else /* USDT2 */
1467   HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1468                                env, clazz, (uintptr_t) methodID);
1469 #endif /* USDT2 */
1470   jobject obj = NULL;
1471   DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1472 
1473   instanceOop i = alloc_object(clazz, CHECK_NULL);
1474   obj = JNIHandles::make_local(env, i);
1475   JavaValue jvalue(T_VOID);
1476   JNI_ArgumentPusherArray ap(methodID, args);
1477   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1478   return obj;
1479 JNI_END
1480 
1481 #ifndef USDT2
1482 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1483 #else /* USDT2 */
1484 DT_RETURN_MARK_DECL(NewObjectV, jobject
1485                     , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1486 #endif /* USDT2 */
1487 
1488 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1489   JNIWrapper("NewObjectV");
1490 #ifndef USDT2
1491   DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1492 #else /* USDT2 */
1493   HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1494                                env, clazz, (uintptr_t) methodID);
1495 #endif /* USDT2 */
1496   jobject obj = NULL;
1497   DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1498 
1499   instanceOop i = alloc_object(clazz, CHECK_NULL);
1500   obj = JNIHandles::make_local(env, i);
1501   JavaValue jvalue(T_VOID);
1502   JNI_ArgumentPusherVaArg ap(methodID, args);
1503   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1504   return obj;
1505 JNI_END
1506 
1507 #ifndef USDT2
1508 DT_RETURN_MARK_DECL(NewObject, jobject);
1509 #else /* USDT2 */
1510 DT_RETURN_MARK_DECL(NewObject, jobject
1511                     , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1512 #endif /* USDT2 */
1513 
1514 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1515   JNIWrapper("NewObject");
1516 #ifndef USDT2
1517   DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1518 #else /* USDT2 */
1519   HOTSPOT_JNI_NEWOBJECT_ENTRY(
1520                               env, clazz, (uintptr_t) methodID);
1521 #endif /* USDT2 */
1522   jobject obj = NULL;
1523   DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1524 
1525   instanceOop i = alloc_object(clazz, CHECK_NULL);
1526   obj = JNIHandles::make_local(env, i);
1527   va_list args;
1528   va_start(args, methodID);
1529   JavaValue jvalue(T_VOID);
1530   JNI_ArgumentPusherVaArg ap(methodID, args);
1531   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1532   va_end(args);
1533   return obj;
1534 JNI_END
1535 
1536 
1537 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1538   JNIWrapper("GetObjectClass");
1539 #ifndef USDT2
1540   DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1541 #else /* USDT2 */
1542   HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1543                                    env, obj);
1544 #endif /* USDT2 */
1545   Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1546   jclass ret =
1547     (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror());
1548 #ifndef USDT2
1549   DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1550 #else /* USDT2 */
1551   HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1552                                     ret);
1553 #endif /* USDT2 */
1554   return ret;
1555 JNI_END
1556 
1557 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1558   JNIWrapper("IsInstanceOf");
1559 #ifndef USDT2
1560   DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1561 #else /* USDT2 */
1562   HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1563                                  env, obj, clazz);
1564 #endif /* USDT2 */
1565   jboolean ret = JNI_TRUE;
1566   if (obj != NULL) {
1567     ret = JNI_FALSE;
1568     Klass* k = java_lang_Class::as_Klass(
1569       JNIHandles::resolve_non_null(clazz));
1570     if (k != NULL) {
1571       ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1572     }
1573   }
1574 #ifndef USDT2
1575   DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1576 #else /* USDT2 */
1577   HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1578                                   ret);
1579 #endif /* USDT2 */
1580   return ret;
1581 JNI_END
1582 
1583 
1584 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1585                                const char *sig, bool is_static, TRAPS) {
1586   // %%%% This code should probably just call into a method in the LinkResolver
1587   //
1588   // The class should have been loaded (we have an instance of the class
1589   // passed in) so the method and signature should already be in the symbol
1590   // table.  If they're not there, the method doesn't exist.
1591   const char *name_to_probe = (name_str == NULL)
1592                         ? vmSymbols::object_initializer_name()->as_C_string()
1593                         : name_str;
1594   TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1595   TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1596 
1597   if (name == NULL || signature == NULL) {
1598     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1599   }
1600 
1601   // Throw a NoSuchMethodError exception if we have an instance of a
1602   // primitive java.lang.Class
1603   if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1604     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1605   }
1606 
1607   KlassHandle klass(THREAD,
1608                java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1609 
1610   // Make sure class is linked and initialized before handing id's out to
1611   // Method*s.
1612   Klass::cast(klass())->initialize(CHECK_NULL);
1613 
1614   Method* m;
1615   if (name == vmSymbols::object_initializer_name() ||
1616       name == vmSymbols::class_initializer_name()) {
1617     // Never search superclasses for constructors
1618     if (klass->oop_is_instance()) {
1619       m = InstanceKlass::cast(klass())->find_method(name, signature);
1620     } else {
1621       m = NULL;
1622     }
1623   } else {
1624     m = klass->lookup_method(name, signature);
1625     // Look up interfaces
1626     if (m == NULL && klass->oop_is_instance()) {
1627       m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
1628                                                                    signature);
1629     }
1630   }
1631   if (m == NULL || (m->is_static() != is_static)) {
1632     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1633   }
1634   return m->jmethod_id();
1635 }
1636 
1637 
1638 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1639           const char *name, const char *sig))
1640   JNIWrapper("GetMethodID");
1641 #ifndef USDT2
1642   DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1643 #else /* USDT2 */
1644   HOTSPOT_JNI_GETMETHODID_ENTRY(
1645                                 env, clazz, (char *) name, (char *) sig);
1646 #endif /* USDT2 */
1647   jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1648 #ifndef USDT2
1649   DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1650 #else /* USDT2 */
1651   HOTSPOT_JNI_GETMETHODID_RETURN(
1652                                  (uintptr_t) ret);
1653 #endif /* USDT2 */
1654   return ret;
1655 JNI_END
1656 
1657 
1658 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1659           const char *name, const char *sig))
1660   JNIWrapper("GetStaticMethodID");
1661 #ifndef USDT2
1662   DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1663 #else /* USDT2 */
1664   HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1665                                       env, (char *) clazz, (char *) name, (char *)sig);
1666 #endif /* USDT2 */
1667   jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1668 #ifndef USDT2
1669   DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1670 #else /* USDT2 */
1671   HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1672                                        (uintptr_t) ret);
1673 #endif /* USDT2 */
1674   return ret;
1675 JNI_END
1676 
1677 
1678 
1679 //
1680 // Calling Methods
1681 //
1682 
1683 #ifndef USDT2
1684 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1685 \
1686   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1687   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1688   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1689 \
1690 JNI_ENTRY(ResultType, \
1691           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1692   JNIWrapper("Call" XSTR(Result) "Method"); \
1693 \
1694   DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1695   ResultType ret = 0;\
1696   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1697                      (const ResultType&)ret);\
1698 \
1699   va_list args; \
1700   va_start(args, methodID); \
1701   JavaValue jvalue(Tag); \
1702   JNI_ArgumentPusherVaArg ap(methodID, args); \
1703   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1704   va_end(args); \
1705   ret = jvalue.get_##ResultType(); \
1706   return ret;\
1707 JNI_END \
1708 \
1709 \
1710 JNI_ENTRY(ResultType, \
1711           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1712   JNIWrapper("Call" XSTR(Result) "MethodV"); \
1713 \
1714   DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1715   ResultType ret = 0;\
1716   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1717                      (const ResultType&)ret);\
1718 \
1719   JavaValue jvalue(Tag); \
1720   JNI_ArgumentPusherVaArg ap(methodID, args); \
1721   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1722   ret = jvalue.get_##ResultType(); \
1723   return ret;\
1724 JNI_END \
1725 \
1726 \
1727 JNI_ENTRY(ResultType, \
1728           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1729   JNIWrapper("Call" XSTR(Result) "MethodA"); \
1730   DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1731   ResultType ret = 0;\
1732   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1733                      (const ResultType&)ret);\
1734 \
1735   JavaValue jvalue(Tag); \
1736   JNI_ArgumentPusherArray ap(methodID, args); \
1737   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1738   ret = jvalue.get_##ResultType(); \
1739   return ret;\
1740 JNI_END
1741 
1742 // the runtime type of subword integral basic types is integer
1743 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1744 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE)
1745 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR)
1746 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT)
1747 
1748 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT)
1749 DEFINE_CALLMETHOD(jint,     Int,     T_INT)
1750 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG)
1751 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT)
1752 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE)
1753 
1754 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1755 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1756 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1757 
1758 #else /* USDT2 */
1759 
1760 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1761                           , EntryProbe, ReturnProbe)    \
1762 \
1763   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1764                           , ReturnProbe);                          \
1765 \
1766 JNI_ENTRY(ResultType, \
1767           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1768   JNIWrapper("Call" XSTR(Result) "Method"); \
1769 \
1770   EntryProbe; \
1771   ResultType ret = 0;\
1772   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1773                      (const ResultType&)ret);\
1774 \
1775   va_list args; \
1776   va_start(args, methodID); \
1777   JavaValue jvalue(Tag); \
1778   JNI_ArgumentPusherVaArg ap(methodID, args); \
1779   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1780   va_end(args); \
1781   ret = jvalue.get_##ResultType(); \
1782   return ret;\
1783 JNI_END
1784 
1785 // the runtime type of subword integral basic types is integer
1786 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1787                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1788                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1789 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE
1790                   , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1791                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1792 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR
1793                   , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1794                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1795 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT
1796                   , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1797                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1798 
1799 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT
1800                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1801                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1802 DEFINE_CALLMETHOD(jint,     Int,     T_INT,
1803                   HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1804                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1805 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG
1806                   , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1807                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1808 // Float and double probes don't return value because dtrace doesn't currently support it
1809 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT
1810                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1811                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1812 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE
1813                   , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1814                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1815 
1816 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1817                           , EntryProbe, ReturnProbe)    \
1818 \
1819   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1820                           , ReturnProbe);                          \
1821 \
1822 JNI_ENTRY(ResultType, \
1823           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1824   JNIWrapper("Call" XSTR(Result) "MethodV"); \
1825 \
1826   EntryProbe;\
1827   ResultType ret = 0;\
1828   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1829                      (const ResultType&)ret);\
1830 \
1831   JavaValue jvalue(Tag); \
1832   JNI_ArgumentPusherVaArg ap(methodID, args); \
1833   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1834   ret = jvalue.get_##ResultType(); \
1835   return ret;\
1836 JNI_END
1837 
1838 // the runtime type of subword integral basic types is integer
1839 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1840                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1841                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1842 DEFINE_CALLMETHODV(jbyte,    Byte,    T_BYTE
1843                   , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1844                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1845 DEFINE_CALLMETHODV(jchar,    Char,    T_CHAR
1846                   , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1847                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1848 DEFINE_CALLMETHODV(jshort,   Short,   T_SHORT
1849                   , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1850                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1851 
1852 DEFINE_CALLMETHODV(jobject,  Object,  T_OBJECT
1853                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1854                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1855 DEFINE_CALLMETHODV(jint,     Int,     T_INT,
1856                   HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1857                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1858 DEFINE_CALLMETHODV(jlong,    Long,    T_LONG
1859                   , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1860                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1861 // Float and double probes don't return value because dtrace doesn't currently support it
1862 DEFINE_CALLMETHODV(jfloat,   Float,   T_FLOAT
1863                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1864                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1865 DEFINE_CALLMETHODV(jdouble,  Double,  T_DOUBLE
1866                   , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1867                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1868 
1869 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1870                           , EntryProbe, ReturnProbe)    \
1871 \
1872   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1873                           , ReturnProbe);                          \
1874 \
1875 JNI_ENTRY(ResultType, \
1876           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1877   JNIWrapper("Call" XSTR(Result) "MethodA"); \
1878   EntryProbe; \
1879   ResultType ret = 0;\
1880   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1881                      (const ResultType&)ret);\
1882 \
1883   JavaValue jvalue(Tag); \
1884   JNI_ArgumentPusherArray ap(methodID, args); \
1885   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1886   ret = jvalue.get_##ResultType(); \
1887   return ret;\
1888 JNI_END
1889 
1890 // the runtime type of subword integral basic types is integer
1891 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1892                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1893                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1894 DEFINE_CALLMETHODA(jbyte,    Byte,    T_BYTE
1895                   , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1896                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1897 DEFINE_CALLMETHODA(jchar,    Char,    T_CHAR
1898                   , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1899                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1900 DEFINE_CALLMETHODA(jshort,   Short,   T_SHORT
1901                   , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1902                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1903 
1904 DEFINE_CALLMETHODA(jobject,  Object,  T_OBJECT
1905                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1906                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1907 DEFINE_CALLMETHODA(jint,     Int,     T_INT,
1908                   HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1909                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1910 DEFINE_CALLMETHODA(jlong,    Long,    T_LONG
1911                   , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1912                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1913 // Float and double probes don't return value because dtrace doesn't currently support it
1914 DEFINE_CALLMETHODA(jfloat,   Float,   T_FLOAT
1915                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1916                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1917 DEFINE_CALLMETHODA(jdouble,  Double,  T_DOUBLE
1918                   , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1919                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1920 
1921 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1922 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1923 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1924 
1925 #endif /* USDT2 */
1926 
1927 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1928   JNIWrapper("CallVoidMethod");
1929 #ifndef USDT2
1930   DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1931 #else /* USDT2 */
1932   HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1933                                    env, obj, (uintptr_t) methodID);
1934 #endif /* USDT2 */
1935   DT_VOID_RETURN_MARK(CallVoidMethod);
1936 
1937   va_list args;
1938   va_start(args, methodID);
1939   JavaValue jvalue(T_VOID);
1940   JNI_ArgumentPusherVaArg ap(methodID, args);
1941   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1942   va_end(args);
1943 JNI_END
1944 
1945 
1946 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1947   JNIWrapper("CallVoidMethodV");
1948 #ifndef USDT2
1949   DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1950 #else /* USDT2 */
1951   HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1952                                     env, obj, (uintptr_t) methodID);
1953 #endif /* USDT2 */
1954   DT_VOID_RETURN_MARK(CallVoidMethodV);
1955 
1956   JavaValue jvalue(T_VOID);
1957   JNI_ArgumentPusherVaArg ap(methodID, args);
1958   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1959 JNI_END
1960 
1961 
1962 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1963   JNIWrapper("CallVoidMethodA");
1964 #ifndef USDT2
1965   DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1966 #else /* USDT2 */
1967   HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1968                                     env, obj, (uintptr_t) methodID);
1969 #endif /* USDT2 */
1970   DT_VOID_RETURN_MARK(CallVoidMethodA);
1971 
1972   JavaValue jvalue(T_VOID);
1973   JNI_ArgumentPusherArray ap(methodID, args);
1974   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1975 JNI_END
1976 
1977 
1978 #ifndef USDT2
1979 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1980 \
1981   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1982   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1983   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1984 \
1985 JNI_ENTRY(ResultType, \
1986           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1987   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1988 \
1989   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1990   ResultType ret;\
1991   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1992                      (const ResultType&)ret);\
1993 \
1994   va_list args; \
1995   va_start(args, methodID); \
1996   JavaValue jvalue(Tag); \
1997   JNI_ArgumentPusherVaArg ap(methodID, args); \
1998   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1999   va_end(args); \
2000   ret = jvalue.get_##ResultType(); \
2001   return ret;\
2002 JNI_END \
2003 \
2004 JNI_ENTRY(ResultType, \
2005           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2006   JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
2007   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
2008   ResultType ret;\
2009   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2010                      (const ResultType&)ret);\
2011 \
2012   JavaValue jvalue(Tag); \
2013   JNI_ArgumentPusherVaArg ap(methodID, args); \
2014   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2015   ret = jvalue.get_##ResultType(); \
2016   return ret;\
2017 JNI_END \
2018 \
2019 JNI_ENTRY(ResultType, \
2020           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2021   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2022   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
2023   ResultType ret;\
2024   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2025                      (const ResultType&)ret);\
2026 \
2027   JavaValue jvalue(Tag); \
2028   JNI_ArgumentPusherArray ap(methodID, args); \
2029   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2030   ret = jvalue.get_##ResultType(); \
2031   return ret;\
2032 JNI_END
2033 
2034 // the runtime type of subword integral basic types is integer
2035 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2036 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE)
2037 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR)
2038 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT)
2039 
2040 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT)
2041 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT)
2042 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG)
2043 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT)
2044 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE)
2045 
2046 
2047 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2048 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2049 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2050 
2051 #else /* USDT2 */
2052 
2053 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2054                                     , EntryProbe, ReturnProbe)      \
2055 \
2056   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2057                           , ReturnProbe);\
2058 \
2059 JNI_ENTRY(ResultType, \
2060           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2061   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2062 \
2063   EntryProbe;\
2064   ResultType ret;\
2065   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2066                      (const ResultType&)ret);\
2067 \
2068   va_list args; \
2069   va_start(args, methodID); \
2070   JavaValue jvalue(Tag); \
2071   JNI_ArgumentPusherVaArg ap(methodID, args); \
2072   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2073   va_end(args); \
2074   ret = jvalue.get_##ResultType(); \
2075   return ret;\
2076 JNI_END
2077 
2078 // the runtime type of subword integral basic types is integer
2079 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2080                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2081                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2082 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE
2083                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2084                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2085 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR
2086                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2087                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2088 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT
2089                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2090                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2091 
2092 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT
2093                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2094                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2095 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT
2096                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2097                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2098 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG
2099                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2100 // Float and double probes don't return value because dtrace doesn't currently support it
2101                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2102 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT
2103                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2104                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2105 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE
2106                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2107                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2108 
2109 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2110                                     , EntryProbe, ReturnProbe)      \
2111 \
2112   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2113                           , ReturnProbe);\
2114 \
2115 JNI_ENTRY(ResultType, \
2116           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2117   JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2118 \
2119   EntryProbe;\
2120   ResultType ret;\
2121   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2122                      (const ResultType&)ret);\
2123 \
2124   JavaValue jvalue(Tag); \
2125   JNI_ArgumentPusherVaArg ap(methodID, args); \
2126   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2127   ret = jvalue.get_##ResultType(); \
2128   return ret;\
2129 JNI_END
2130 
2131 // the runtime type of subword integral basic types is integer
2132 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2133                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2134                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2135 DEFINE_CALLNONVIRTUALMETHODV(jbyte,    Byte,    T_BYTE
2136                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2137                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2138 DEFINE_CALLNONVIRTUALMETHODV(jchar,    Char,    T_CHAR
2139                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2140                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2141 DEFINE_CALLNONVIRTUALMETHODV(jshort,   Short,   T_SHORT
2142                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2143                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2144 
2145 DEFINE_CALLNONVIRTUALMETHODV(jobject,  Object,  T_OBJECT
2146                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2147                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2148 DEFINE_CALLNONVIRTUALMETHODV(jint,     Int,     T_INT
2149                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2150                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2151 DEFINE_CALLNONVIRTUALMETHODV(jlong,    Long,    T_LONG
2152                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2153 // Float and double probes don't return value because dtrace doesn't currently support it
2154                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2155 DEFINE_CALLNONVIRTUALMETHODV(jfloat,   Float,   T_FLOAT
2156                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2157                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2158 DEFINE_CALLNONVIRTUALMETHODV(jdouble,  Double,  T_DOUBLE
2159                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2160                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2161 
2162 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2163                                     , EntryProbe, ReturnProbe)      \
2164 \
2165   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2166                           , ReturnProbe);\
2167 \
2168 JNI_ENTRY(ResultType, \
2169           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2170   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2171 \
2172   EntryProbe;\
2173   ResultType ret;\
2174   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2175                      (const ResultType&)ret);\
2176 \
2177   JavaValue jvalue(Tag); \
2178   JNI_ArgumentPusherArray ap(methodID, args); \
2179   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2180   ret = jvalue.get_##ResultType(); \
2181   return ret;\
2182 JNI_END
2183 
2184 // the runtime type of subword integral basic types is integer
2185 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2186                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2187                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2188 DEFINE_CALLNONVIRTUALMETHODA(jbyte,    Byte,    T_BYTE
2189                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2190                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2191 DEFINE_CALLNONVIRTUALMETHODA(jchar,    Char,    T_CHAR
2192                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2193                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2194 DEFINE_CALLNONVIRTUALMETHODA(jshort,   Short,   T_SHORT
2195                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2196                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2197 
2198 DEFINE_CALLNONVIRTUALMETHODA(jobject,  Object,  T_OBJECT
2199                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2200                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2201 DEFINE_CALLNONVIRTUALMETHODA(jint,     Int,     T_INT
2202                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2203                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2204 DEFINE_CALLNONVIRTUALMETHODA(jlong,    Long,    T_LONG
2205                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2206 // Float and double probes don't return value because dtrace doesn't currently support it
2207                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2208 DEFINE_CALLNONVIRTUALMETHODA(jfloat,   Float,   T_FLOAT
2209                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2210                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2211 DEFINE_CALLNONVIRTUALMETHODA(jdouble,  Double,  T_DOUBLE
2212                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2213                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2214 
2215 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2216                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2217 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2218                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2219 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2220                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2221 #endif /* USDT2 */
2222 
2223 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2224   JNIWrapper("CallNonvirtualVoidMethod");
2225 
2226 #ifndef USDT2
2227   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2228                env, obj, cls, methodID);
2229 #else /* USDT2 */
2230   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2231                env, obj, cls, (uintptr_t) methodID);
2232 #endif /* USDT2 */
2233   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2234 
2235   va_list args;
2236   va_start(args, methodID);
2237   JavaValue jvalue(T_VOID);
2238   JNI_ArgumentPusherVaArg ap(methodID, args);
2239   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2240   va_end(args);
2241 JNI_END
2242 
2243 
2244 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2245   JNIWrapper("CallNonvirtualVoidMethodV");
2246 
2247 #ifndef USDT2
2248   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2249                env, obj, cls, methodID);
2250 #else /* USDT2 */
2251   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2252                env, obj, cls, (uintptr_t) methodID);
2253 #endif /* USDT2 */
2254   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2255 
2256   JavaValue jvalue(T_VOID);
2257   JNI_ArgumentPusherVaArg ap(methodID, args);
2258   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2259 JNI_END
2260 
2261 
2262 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2263   JNIWrapper("CallNonvirtualVoidMethodA");
2264 #ifndef USDT2
2265   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2266                 env, obj, cls, methodID);
2267 #else /* USDT2 */
2268   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2269                 env, obj, cls, (uintptr_t) methodID);
2270 #endif /* USDT2 */
2271   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2272   JavaValue jvalue(T_VOID);
2273   JNI_ArgumentPusherArray ap(methodID, args);
2274   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2275 JNI_END
2276 
2277 
2278 #ifndef USDT2
2279 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2280 \
2281   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2282   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2283   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2284 \
2285 JNI_ENTRY(ResultType, \
2286           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2287   JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2288 \
2289   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2290   ResultType ret = 0;\
2291   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2292                      (const ResultType&)ret);\
2293 \
2294   va_list args; \
2295   va_start(args, methodID); \
2296   JavaValue jvalue(Tag); \
2297   JNI_ArgumentPusherVaArg ap(methodID, args); \
2298   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2299   va_end(args); \
2300   ret = jvalue.get_##ResultType(); \
2301   return ret;\
2302 JNI_END \
2303 \
2304 JNI_ENTRY(ResultType, \
2305           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2306   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2307   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2308   ResultType ret = 0;\
2309   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2310                      (const ResultType&)ret);\
2311 \
2312   JavaValue jvalue(Tag); \
2313   JNI_ArgumentPusherVaArg ap(methodID, args); \
2314   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2315   ret = jvalue.get_##ResultType(); \
2316   return ret;\
2317 JNI_END \
2318 \
2319 JNI_ENTRY(ResultType, \
2320           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2321   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2322   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2323   ResultType ret = 0;\
2324   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2325                      (const ResultType&)ret);\
2326 \
2327   JavaValue jvalue(Tag); \
2328   JNI_ArgumentPusherArray ap(methodID, args); \
2329   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2330   ret = jvalue.get_##ResultType(); \
2331   return ret;\
2332 JNI_END
2333 
2334 // the runtime type of subword integral basic types is integer
2335 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2336 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE)
2337 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR)
2338 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT)
2339 
2340 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT)
2341 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT)
2342 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG)
2343 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT)
2344 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE)
2345 
2346 
2347 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2348 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2349 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2350 
2351 #else /* USDT2 */
2352 
2353 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2354                                 , EntryProbe, ResultProbe) \
2355 \
2356   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2357                           , ResultProbe);                               \
2358 \
2359 JNI_ENTRY(ResultType, \
2360           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2361   JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2362 \
2363   EntryProbe; \
2364   ResultType ret = 0;\
2365   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2366                      (const ResultType&)ret);\
2367 \
2368   va_list args; \
2369   va_start(args, methodID); \
2370   JavaValue jvalue(Tag); \
2371   JNI_ArgumentPusherVaArg ap(methodID, args); \
2372   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2373   va_end(args); \
2374   ret = jvalue.get_##ResultType(); \
2375   return ret;\
2376 JNI_END
2377 
2378 // the runtime type of subword integral basic types is integer
2379 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2380                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2381                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2382 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE
2383                         , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2384                         HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2385 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR
2386                         , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2387                         HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2388 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT
2389                         , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2390                         HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2391 
2392 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT
2393                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2394                         HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2395 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT
2396                         , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2397                         HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2398 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG
2399                         , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2400                         HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2401 // Float and double probes don't return value because dtrace doesn't currently support it
2402 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT
2403                         , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2404                         HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2405 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE
2406                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2407                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2408 
2409 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2410                                 , EntryProbe, ResultProbe) \
2411 \
2412   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2413                           , ResultProbe);                               \
2414 \
2415 JNI_ENTRY(ResultType, \
2416           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2417   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2418 \
2419   EntryProbe; \
2420   ResultType ret = 0;\
2421   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2422                      (const ResultType&)ret);\
2423 \
2424   JavaValue jvalue(Tag); \
2425   JNI_ArgumentPusherVaArg ap(methodID, args); \
2426   /* Make sure class is initialized before trying to invoke its method */ \
2427   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2428   Klass::cast(k())->initialize(CHECK_0); \
2429   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2430   va_end(args); \
2431   ret = jvalue.get_##ResultType(); \
2432   return ret;\
2433 JNI_END
2434 
2435 // the runtime type of subword integral basic types is integer
2436 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2437                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2438                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2439 DEFINE_CALLSTATICMETHODV(jbyte,    Byte,    T_BYTE
2440                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2441                         HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2442 DEFINE_CALLSTATICMETHODV(jchar,    Char,    T_CHAR
2443                         , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2444                         HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2445 DEFINE_CALLSTATICMETHODV(jshort,   Short,   T_SHORT
2446                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2447                         HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2448 
2449 DEFINE_CALLSTATICMETHODV(jobject,  Object,  T_OBJECT
2450                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2451                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2452 DEFINE_CALLSTATICMETHODV(jint,     Int,     T_INT
2453                         , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2454                         HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2455 DEFINE_CALLSTATICMETHODV(jlong,    Long,    T_LONG
2456                         , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2457                         HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2458 // Float and double probes don't return value because dtrace doesn't currently support it
2459 DEFINE_CALLSTATICMETHODV(jfloat,   Float,   T_FLOAT
2460                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2461                         HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2462 DEFINE_CALLSTATICMETHODV(jdouble,  Double,  T_DOUBLE
2463                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2464                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2465 
2466 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2467                                 , EntryProbe, ResultProbe) \
2468 \
2469   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2470                           , ResultProbe);                               \
2471 \
2472 JNI_ENTRY(ResultType, \
2473           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2474   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2475 \
2476   EntryProbe; \
2477   ResultType ret = 0;\
2478   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2479                      (const ResultType&)ret);\
2480 \
2481   JavaValue jvalue(Tag); \
2482   JNI_ArgumentPusherArray ap(methodID, args); \
2483   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2484   ret = jvalue.get_##ResultType(); \
2485   return ret;\
2486 JNI_END
2487 
2488 // the runtime type of subword integral basic types is integer
2489 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2490                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2491                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2492 DEFINE_CALLSTATICMETHODA(jbyte,    Byte,    T_BYTE
2493                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2494                         HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2495 DEFINE_CALLSTATICMETHODA(jchar,    Char,    T_CHAR
2496                         , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2497                         HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2498 DEFINE_CALLSTATICMETHODA(jshort,   Short,   T_SHORT
2499                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2500                         HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2501 
2502 DEFINE_CALLSTATICMETHODA(jobject,  Object,  T_OBJECT
2503                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2504                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2505 DEFINE_CALLSTATICMETHODA(jint,     Int,     T_INT
2506                         , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2507                         HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2508 DEFINE_CALLSTATICMETHODA(jlong,    Long,    T_LONG
2509                         , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2510                         HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2511 // Float and double probes don't return value because dtrace doesn't currently support it
2512 DEFINE_CALLSTATICMETHODA(jfloat,   Float,   T_FLOAT
2513                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2514                         HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2515 DEFINE_CALLSTATICMETHODA(jdouble,  Double,  T_DOUBLE
2516                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2517                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2518 
2519 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2520                          , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2521 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2522                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2523 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2524                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2525 #endif /* USDT2 */
2526 
2527 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2528   JNIWrapper("CallStaticVoidMethod");
2529 #ifndef USDT2
2530   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2531 #else /* USDT2 */
2532   HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2533                                          env, cls, (uintptr_t) methodID);
2534 #endif /* USDT2 */
2535   DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2536 
2537   va_list args;
2538   va_start(args, methodID);
2539   JavaValue jvalue(T_VOID);
2540   JNI_ArgumentPusherVaArg ap(methodID, args);
2541   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2542   va_end(args);
2543 JNI_END
2544 
2545 
2546 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2547   JNIWrapper("CallStaticVoidMethodV");
2548 #ifndef USDT2
2549   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2550 #else /* USDT2 */
2551   HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2552                                           env, cls, (uintptr_t) methodID);
2553 #endif /* USDT2 */
2554   DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2555 
2556   JavaValue jvalue(T_VOID);
2557   JNI_ArgumentPusherVaArg ap(methodID, args);
2558   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2559 JNI_END
2560 
2561 
2562 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2563   JNIWrapper("CallStaticVoidMethodA");
2564 #ifndef USDT2
2565   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2566 #else /* USDT2 */
2567   HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2568                                           env, cls, (uintptr_t) methodID);
2569 #endif /* USDT2 */
2570   DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2571 
2572   JavaValue jvalue(T_VOID);
2573   JNI_ArgumentPusherArray ap(methodID, args);
2574   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2575 JNI_END
2576 
2577 
2578 //
2579 // Accessing Fields
2580 //
2581 
2582 
2583 #ifndef USDT2
2584 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2585 #else /* USDT2 */
2586 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2587                     , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2588 #endif /* USDT2 */
2589 
2590 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2591           const char *name, const char *sig))
2592   JNIWrapper("GetFieldID");
2593 #ifndef USDT2
2594   DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2595 #else /* USDT2 */
2596   HOTSPOT_JNI_GETFIELDID_ENTRY(
2597                                env, clazz, (char *) name, (char *) sig);
2598 #endif /* USDT2 */
2599   jfieldID ret = 0;
2600   DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2601 
2602   // The class should have been loaded (we have an instance of the class
2603   // passed in) so the field and signature should already be in the symbol
2604   // table.  If they're not there, the field doesn't exist.
2605   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2606   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2607   if (fieldname == NULL || signame == NULL) {
2608     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2609   }
2610   KlassHandle k(THREAD,
2611                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2612   // Make sure class is initialized before handing id's out to fields
2613   Klass::cast(k())->initialize(CHECK_NULL);
2614 
2615   fieldDescriptor fd;
2616   if (!Klass::cast(k())->oop_is_instance() ||
2617       !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2618     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2619   }
2620 
2621   // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2622   // It may also have hash bits for k, if VerifyJNIFields is turned on.
2623   ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2624   return ret;
2625 JNI_END
2626 
2627 
2628 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2629   JNIWrapper("GetObjectField");
2630 #ifndef USDT2
2631   DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2632 #else /* USDT2 */
2633   HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2634                                    env, obj, (uintptr_t) fieldID);
2635 #endif /* USDT2 */
2636   oop o = JNIHandles::resolve_non_null(obj);
2637   Klass* k = o->klass();
2638   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2639   // Keep JVMTI addition small and only check enabled flag here.
2640   // jni_GetField_probe() assumes that is okay to create handles.
2641   if (JvmtiExport::should_post_field_access()) {
2642     o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2643   }
2644   jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2645 #ifndef SERIALGC
2646   // If G1 is enabled and we are accessing the value of the referent
2647   // field in a reference object then we need to register a non-null
2648   // referent with the SATB barrier.
2649   if (UseG1GC) {
2650     bool needs_barrier = false;
2651 
2652     if (ret != NULL &&
2653         offset == java_lang_ref_Reference::referent_offset &&
2654         InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2655       assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2656       needs_barrier = true;
2657     }
2658 
2659     if (needs_barrier) {
2660       oop referent = JNIHandles::resolve(ret);
2661       G1SATBCardTableModRefBS::enqueue(referent);
2662     }
2663   }
2664 #endif // SERIALGC
2665 #ifndef USDT2
2666   DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2667 #else /* USDT2 */
2668 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2669                                   ret);
2670 #endif /* USDT2 */
2671   return ret;
2672 JNI_END
2673 
2674 
2675 #ifndef USDT2
2676 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2677 \
2678   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2679 \
2680 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2681   JNIWrapper("Get" XSTR(Result) "Field"); \
2682 \
2683   DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2684   Return ret = 0;\
2685   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2686 \
2687   oop o = JNIHandles::resolve_non_null(obj); \
2688   Klass* k = o->klass(); \
2689   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2690   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2691   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2692   /* and creates a ResetNoHandleMark.                                   */ \
2693   if (JvmtiExport::should_post_field_access()) { \
2694     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2695   } \
2696   ret = o->Fieldname##_field(offset); \
2697   return ret; \
2698 JNI_END
2699 
2700 DEFINE_GETFIELD(jboolean, bool,   Boolean)
2701 DEFINE_GETFIELD(jbyte,    byte,   Byte)
2702 DEFINE_GETFIELD(jchar,    char,   Char)
2703 DEFINE_GETFIELD(jshort,   short,  Short)
2704 DEFINE_GETFIELD(jint,     int,    Int)
2705 DEFINE_GETFIELD(jlong,    long,   Long)
2706 DEFINE_GETFIELD(jfloat,   float,  Float)
2707 DEFINE_GETFIELD(jdouble,  double, Double)
2708 
2709 #else /* USDT2 */
2710 
2711 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2712   , EntryProbe, ReturnProbe) \
2713 \
2714   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2715   , ReturnProbe); \
2716 \
2717 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2718   JNIWrapper("Get" XSTR(Result) "Field"); \
2719 \
2720   EntryProbe; \
2721   Return ret = 0;\
2722   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2723 \
2724   oop o = JNIHandles::resolve_non_null(obj); \
2725   Klass* k = o->klass(); \
2726   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2727   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2728   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2729   /* and creates a ResetNoHandleMark.                                   */ \
2730   if (JvmtiExport::should_post_field_access()) { \
2731     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2732   } \
2733   ret = o->Fieldname##_field(offset); \
2734   return ret; \
2735 JNI_END
2736 
2737 DEFINE_GETFIELD(jboolean, bool,   Boolean
2738                 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2739                 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2740 DEFINE_GETFIELD(jbyte,    byte,   Byte
2741                 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2742                 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2743 DEFINE_GETFIELD(jchar,    char,   Char
2744                 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2745                 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2746 DEFINE_GETFIELD(jshort,   short,  Short
2747                 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2748                 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2749 DEFINE_GETFIELD(jint,     int,    Int
2750                 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2751                 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2752 DEFINE_GETFIELD(jlong,    long,   Long
2753                 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2754                 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2755 // Float and double probes don't return value because dtrace doesn't currently support it
2756 DEFINE_GETFIELD(jfloat,   float,  Float
2757                 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2758                 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2759 DEFINE_GETFIELD(jdouble,  double, Double
2760                 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2761                 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2762 #endif /* USDT2 */
2763 
2764 address jni_GetBooleanField_addr() {
2765   return (address)jni_GetBooleanField;
2766 }
2767 address jni_GetByteField_addr() {
2768   return (address)jni_GetByteField;
2769 }
2770 address jni_GetCharField_addr() {
2771   return (address)jni_GetCharField;
2772 }
2773 address jni_GetShortField_addr() {
2774   return (address)jni_GetShortField;
2775 }
2776 address jni_GetIntField_addr() {
2777   return (address)jni_GetIntField;
2778 }
2779 address jni_GetLongField_addr() {
2780   return (address)jni_GetLongField;
2781 }
2782 address jni_GetFloatField_addr() {
2783   return (address)jni_GetFloatField;
2784 }
2785 address jni_GetDoubleField_addr() {
2786   return (address)jni_GetDoubleField;
2787 }
2788 
2789 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2790   JNIWrapper("SetObjectField");
2791 #ifndef USDT2
2792   DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2793 #else /* USDT2 */
2794   HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2795                                    env, obj, (uintptr_t) fieldID, value);
2796 #endif /* USDT2 */
2797   oop o = JNIHandles::resolve_non_null(obj);
2798   Klass* k = o->klass();
2799   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2800   // Keep JVMTI addition small and only check enabled flag here.
2801   // jni_SetField_probe_nh() assumes that is not okay to create handles
2802   // and creates a ResetNoHandleMark.
2803   if (JvmtiExport::should_post_field_modification()) {
2804     jvalue field_value;
2805     field_value.l = value;
2806     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2807   }
2808   o->obj_field_put(offset, JNIHandles::resolve(value));
2809 #ifndef USDT2
2810   DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2811 #else /* USDT2 */
2812   HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2813 );
2814 #endif /* USDT2 */
2815 JNI_END
2816 
2817 #ifndef USDT2
2818 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2819 \
2820 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2821   JNIWrapper("Set" XSTR(Result) "Field"); \
2822 \
2823   HS_DTRACE_PROBE_CDECL_N(hotspot_jni, Set##Result##Field__entry, \
2824     ( JNIEnv*, jobject, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \
2825   HS_DTRACE_PROBE_N(hotspot_jni, Set##Result##Field__entry, \
2826     ( env, obj, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \
2827 \
2828   oop o = JNIHandles::resolve_non_null(obj); \
2829   Klass* k = o->klass(); \
2830   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2831   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2832   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2833   /* and creates a ResetNoHandleMark.                                   */ \
2834   if (JvmtiExport::should_post_field_modification()) { \
2835     jvalue field_value; \
2836     field_value.unionType = value; \
2837     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2838   } \
2839   o->Fieldname##_field_put(offset, value); \
2840   DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2841 JNI_END
2842 
2843 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z)
2844 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b)
2845 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c)
2846 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s)
2847 DEFINE_SETFIELD(jint,     int,    Int,     'I', i)
2848 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j)
2849 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f)
2850 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d)
2851 
2852 #else /* USDT2 */
2853 
2854 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2855                         , EntryProbe, ReturnProbe) \
2856 \
2857 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2858   JNIWrapper("Set" XSTR(Result) "Field"); \
2859 \
2860   EntryProbe; \
2861 \
2862   oop o = JNIHandles::resolve_non_null(obj); \
2863   Klass* k = o->klass(); \
2864   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2865   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2866   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2867   /* and creates a ResetNoHandleMark.                                   */ \
2868   if (JvmtiExport::should_post_field_modification()) { \
2869     jvalue field_value; \
2870     field_value.unionType = value; \
2871     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2872   } \
2873   o->Fieldname##_field_put(offset, value); \
2874   ReturnProbe; \
2875 JNI_END
2876 
2877 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z
2878                 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2879                 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2880 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b
2881                 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2882                 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2883 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c
2884                 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2885                 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2886 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s
2887                 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2888                 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2889 DEFINE_SETFIELD(jint,     int,    Int,     'I', i
2890                 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2891                 HOTSPOT_JNI_SETINTFIELD_RETURN())
2892 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j
2893                 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2894                 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2895 // Float and double probes don't return value because dtrace doesn't currently support it
2896 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f
2897                 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2898                 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2899 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d
2900                 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2901                 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2902 #endif /* USDT2 */
2903 
2904 #ifndef USDT2
2905 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2906 #else /* USDT2 */
2907 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2908                     , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2909 #endif /* USDT2 */
2910 
2911 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2912   JNIWrapper("ToReflectedField");
2913 #ifndef USDT2
2914   DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2915                 env, cls, fieldID, isStatic);
2916 #else /* USDT2 */
2917   HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2918                 env, cls, (uintptr_t) fieldID, isStatic);
2919 #endif /* USDT2 */
2920   jobject ret = NULL;
2921   DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2922 
2923   fieldDescriptor fd;
2924   bool found = false;
2925   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2926 
2927   assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2928 
2929   if (isStatic) {
2930     // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2931     JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2932     assert(id->is_static_field_id(), "invalid static field id");
2933     found = id->find_local_field(&fd);
2934   } else {
2935     // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2936     int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2937     found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2938   }
2939   assert(found, "bad fieldID passed into jni_ToReflectedField");
2940   oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2941   ret = JNIHandles::make_local(env, reflected);
2942   return ret;
2943 JNI_END
2944 
2945 
2946 //
2947 // Accessing Static Fields
2948 //
2949 #ifndef USDT2
2950 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2951 #else /* USDT2 */
2952 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2953                     , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2954 #endif /* USDT2 */
2955 
2956 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2957           const char *name, const char *sig))
2958   JNIWrapper("GetStaticFieldID");
2959 #ifndef USDT2
2960   DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2961 #else /* USDT2 */
2962   HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2963                                      env, clazz, (char *) name, (char *) sig);
2964 #endif /* USDT2 */
2965   jfieldID ret = NULL;
2966   DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2967 
2968   // The class should have been loaded (we have an instance of the class
2969   // passed in) so the field and signature should already be in the symbol
2970   // table.  If they're not there, the field doesn't exist.
2971   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2972   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2973   if (fieldname == NULL || signame == NULL) {
2974     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2975   }
2976   KlassHandle k(THREAD,
2977                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2978   // Make sure class is initialized before handing id's out to static fields
2979   Klass::cast(k())->initialize(CHECK_NULL);
2980 
2981   fieldDescriptor fd;
2982   if (!Klass::cast(k())->oop_is_instance() ||
2983       !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2984     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2985   }
2986 
2987   // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2988   JNIid* id = InstanceKlass::cast(fd.field_holder())->jni_id_for(fd.offset());
2989   debug_only(id->set_is_static_field_id();)
2990 
2991   debug_only(id->verify(fd.field_holder()));
2992 
2993   ret = jfieldIDWorkaround::to_static_jfieldID(id);
2994   return ret;
2995 JNI_END
2996 
2997 
2998 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2999   JNIWrapper("GetStaticObjectField");
3000 #ifndef USDT2
3001   DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
3002 #else /* USDT2 */
3003   HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
3004                                          env, clazz, (uintptr_t) fieldID);
3005 #endif /* USDT2 */
3006 #if INCLUDE_JNI_CHECK
3007   DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
3008 #endif // INCLUDE_JNI_CHECK
3009   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3010   assert(id->is_static_field_id(), "invalid static field id");
3011   // Keep JVMTI addition small and only check enabled flag here.
3012   // jni_GetField_probe() assumes that is okay to create handles.
3013   if (JvmtiExport::should_post_field_access()) {
3014     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
3015   }
3016   jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
3017 #ifndef USDT2
3018   DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
3019 #else /* USDT2 */
3020   HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
3021                                           ret);
3022 #endif /* USDT2 */
3023   return ret;
3024 JNI_END
3025 
3026 #ifndef USDT2
3027 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
3028 \
3029   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
3030 \
3031 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3032   JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3033   DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3034   Return ret = 0;\
3035   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3036                      (const Return&)ret);\
3037   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3038   assert(id->is_static_field_id(), "invalid static field id"); \
3039   /* Keep JVMTI addition small and only check enabled flag here. */ \
3040   /* jni_GetField_probe() assumes that is okay to create handles. */ \
3041   if (JvmtiExport::should_post_field_access()) { \
3042     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3043   } \
3044   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3045   return ret;\
3046 JNI_END
3047 
3048 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean)
3049 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte)
3050 DEFINE_GETSTATICFIELD(jchar,    char,   Char)
3051 DEFINE_GETSTATICFIELD(jshort,   short,  Short)
3052 DEFINE_GETSTATICFIELD(jint,     int,    Int)
3053 DEFINE_GETSTATICFIELD(jlong,    long,   Long)
3054 DEFINE_GETSTATICFIELD(jfloat,   float,  Float)
3055 DEFINE_GETSTATICFIELD(jdouble,  double, Double)
3056 
3057 #else /* USDT2 */
3058 
3059 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3060                               , EntryProbe, ReturnProbe) \
3061 \
3062   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3063                           , ReturnProbe);                                          \
3064 \
3065 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3066   JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3067   EntryProbe; \
3068   Return ret = 0;\
3069   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3070                      (const Return&)ret);\
3071   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3072   assert(id->is_static_field_id(), "invalid static field id"); \
3073   /* Keep JVMTI addition small and only check enabled flag here. */ \
3074   /* jni_GetField_probe() assumes that is okay to create handles. */ \
3075   if (JvmtiExport::should_post_field_access()) { \
3076     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3077   } \
3078   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3079   return ret;\
3080 JNI_END
3081 
3082 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean
3083                       , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3084 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte
3085                       , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref)   )
3086 DEFINE_GETSTATICFIELD(jchar,    char,   Char
3087                       , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref)   )
3088 DEFINE_GETSTATICFIELD(jshort,   short,  Short
3089                       , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref)  )
3090 DEFINE_GETSTATICFIELD(jint,     int,    Int
3091                       , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),     HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref)    )
3092 DEFINE_GETSTATICFIELD(jlong,    long,   Long
3093                       , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref)   )
3094 // Float and double probes don't return value because dtrace doesn't currently support it
3095 DEFINE_GETSTATICFIELD(jfloat,   float,  Float
3096                       , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN()          )
3097 DEFINE_GETSTATICFIELD(jdouble,  double, Double
3098                       , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),  HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN()         )
3099 #endif /* USDT2 */
3100 
3101 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3102   JNIWrapper("SetStaticObjectField");
3103 #ifndef USDT2
3104   DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3105 #else /* USDT2 */
3106  HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3107                                         env, clazz, (uintptr_t) fieldID, value);
3108 #endif /* USDT2 */
3109   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3110   assert(id->is_static_field_id(), "invalid static field id");
3111   // Keep JVMTI addition small and only check enabled flag here.
3112   // jni_SetField_probe() assumes that is okay to create handles.
3113   if (JvmtiExport::should_post_field_modification()) {
3114     jvalue field_value;
3115     field_value.l = value;
3116     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3117   }
3118   id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3119 #ifndef USDT2
3120   DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3121 #else /* USDT2 */
3122   HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3123                                           );
3124 #endif /* USDT2 */
3125 JNI_END
3126 
3127 
3128 #ifndef USDT2
3129 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3130 \
3131 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3132   JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3133   HS_DTRACE_PROBE_CDECL_N(hotspot_jni, SetStatic##Result##Field__entry,\
3134     ( JNIEnv*, jclass, jfieldID FP_SELECT_##Result(COMMA Argument,/*empty*/) ) ); \
3135   HS_DTRACE_PROBE_N(hotspot_jni, SetStatic##Result##Field__entry, \
3136     ( env, clazz, fieldID FP_SELECT_##Result(COMMA value,/*empty*/) ) ); \
3137 \
3138   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3139   assert(id->is_static_field_id(), "invalid static field id"); \
3140   /* Keep JVMTI addition small and only check enabled flag here. */ \
3141   /* jni_SetField_probe() assumes that is okay to create handles. */ \
3142   if (JvmtiExport::should_post_field_modification()) { \
3143     jvalue field_value; \
3144     field_value.unionType = value; \
3145     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3146   } \
3147   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3148   DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3149 JNI_END
3150 
3151 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z)
3152 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b)
3153 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c)
3154 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s)
3155 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i)
3156 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j)
3157 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f)
3158 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d)
3159 
3160 #else /* USDT2 */
3161 
3162 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3163                               , EntryProbe, ReturnProbe) \
3164 \
3165 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3166   JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3167   EntryProbe; \
3168 \
3169   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3170   assert(id->is_static_field_id(), "invalid static field id"); \
3171   /* Keep JVMTI addition small and only check enabled flag here. */ \
3172   /* jni_SetField_probe() assumes that is okay to create handles. */ \
3173   if (JvmtiExport::should_post_field_modification()) { \
3174     jvalue field_value; \
3175     field_value.unionType = value; \
3176     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3177   } \
3178   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3179   ReturnProbe;\
3180 JNI_END
3181 
3182 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z
3183                       , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3184                       HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3185 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b
3186                       , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3187                       HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3188 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c
3189                       , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3190                       HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3191 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s
3192                       , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3193                       HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3194 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i
3195                       , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3196                       HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3197 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j
3198                       , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3199                       HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3200 // Float and double probes don't return value because dtrace doesn't currently support it
3201 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f
3202                       , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3203                       HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3204 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d
3205                       , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3206                       HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3207 #endif /* USDT2 */
3208 
3209 //
3210 // String Operations
3211 //
3212 
3213 // Unicode Interface
3214 
3215 #ifndef USDT2
3216 DT_RETURN_MARK_DECL(NewString, jstring);
3217 #else /* USDT2 */
3218 DT_RETURN_MARK_DECL(NewString, jstring
3219                     , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3220 #endif /* USDT2 */
3221 
3222 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3223   JNIWrapper("NewString");
3224 #ifndef USDT2
3225   DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3226 #else /* USDT2 */
3227  HOTSPOT_JNI_NEWSTRING_ENTRY(
3228                              env, (uint16_t *) unicodeChars, len);
3229 #endif /* USDT2 */
3230   jstring ret = NULL;
3231   DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3232   oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3233   ret = (jstring) JNIHandles::make_local(env, string);
3234   return ret;
3235 JNI_END
3236 
3237 
3238 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3239   JNIWrapper("GetStringLength");
3240 #ifndef USDT2
3241   DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3242 #else /* USDT2 */
3243   HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3244                                     env, string);
3245 #endif /* USDT2 */
3246   jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
3247 #ifndef USDT2
3248   DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3249 #else /* USDT2 */
3250  HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3251                                     ret);
3252 #endif /* USDT2 */
3253   return ret;
3254 JNI_END
3255 
3256 
3257 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3258   JNIEnv *env, jstring string, jboolean *isCopy))
3259   JNIWrapper("GetStringChars");
3260 #ifndef USDT2
3261   DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3262 #else /* USDT2 */
3263  HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3264                                   env, string, (uintptr_t *) isCopy);
3265 #endif /* USDT2 */
3266   //%note jni_5
3267   if (isCopy != NULL) {
3268     *isCopy = JNI_TRUE;
3269   }
3270   oop s = JNIHandles::resolve_non_null(string);
3271   int s_len = java_lang_String::length(s);
3272   typeArrayOop s_value = java_lang_String::value(s);
3273   int s_offset = java_lang_String::offset(s);
3274   jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1, mtInternal);  // add one for zero termination
3275   if (s_len > 0) {
3276     memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3277   }
3278   buf[s_len] = 0;
3279 #ifndef USDT2
3280   DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3281 #else /* USDT2 */
3282   HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3283                                     buf);
3284 #endif /* USDT2 */
3285   return buf;
3286 JNI_END
3287 
3288 
3289 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3290   JNIWrapper("ReleaseStringChars");
3291 #ifndef USDT2
3292   DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3293 #else /* USDT2 */
3294   HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3295                                        env, str, (uint16_t *) chars);
3296 #endif /* USDT2 */
3297   //%note jni_6
3298   if (chars != NULL) {
3299     // Since String objects are supposed to be immutable, don't copy any
3300     // new data back.  A bad user will have to go after the char array.
3301     FreeHeap((void*) chars);
3302   }
3303 #ifndef USDT2
3304   DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3305 #else /* USDT2 */
3306   HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3307 );
3308 #endif /* USDT2 */
3309 JNI_END
3310 
3311 
3312 // UTF Interface
3313 
3314 #ifndef USDT2
3315 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3316 #else /* USDT2 */
3317 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3318                     , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3319 #endif /* USDT2 */
3320 
3321 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3322   JNIWrapper("NewStringUTF");
3323 #ifndef USDT2
3324   DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3325 #else /* USDT2 */
3326   HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3327                                  env, (char *) bytes);
3328 #endif /* USDT2 */
3329   jstring ret;
3330   DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3331 
3332   oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3333   ret = (jstring) JNIHandles::make_local(env, result);
3334   return ret;
3335 JNI_END
3336 
3337 
3338 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3339   JNIWrapper("GetStringUTFLength");
3340 #ifndef USDT2
3341   DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3342 #else /* USDT2 */
3343  HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3344                                       env, string);
3345 #endif /* USDT2 */
3346   jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
3347 #ifndef USDT2
3348   DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3349 #else /* USDT2 */
3350   HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3351                                         ret);
3352 #endif /* USDT2 */
3353   return ret;
3354 JNI_END
3355 
3356 
3357 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3358   JNIWrapper("GetStringUTFChars");
3359 #ifndef USDT2
3360   DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3361 #else /* USDT2 */
3362  HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3363                                      env, string, (uintptr_t *) isCopy);
3364 #endif /* USDT2 */
3365   oop java_string = JNIHandles::resolve_non_null(string);
3366   size_t length = java_lang_String::utf8_length(java_string);
3367   char* result = AllocateHeap(length + 1, mtInternal);
3368   java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3369   if (isCopy != NULL) *isCopy = JNI_TRUE;
3370 #ifndef USDT2
3371   DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3372 #else /* USDT2 */
3373  HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3374                                       result);
3375 #endif /* USDT2 */
3376   return result;
3377 JNI_END
3378 
3379 
3380 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3381   JNIWrapper("ReleaseStringUTFChars");
3382 #ifndef USDT2
3383   DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3384 #else /* USDT2 */
3385  HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3386                                          env, str, (char *) chars);
3387 #endif /* USDT2 */
3388   if (chars != NULL) {
3389     FreeHeap((char*) chars);
3390   }
3391 #ifndef USDT2
3392   DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3393 #else /* USDT2 */
3394 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3395 );
3396 #endif /* USDT2 */
3397 JNI_END
3398 
3399 
3400 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3401   JNIWrapper("GetArrayLength");
3402 #ifndef USDT2
3403   DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3404 #else /* USDT2 */
3405  HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3406                                   env, array);
3407 #endif /* USDT2 */
3408   arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3409   assert(a->is_array(), "must be array");
3410   jsize ret = a->length();
3411 #ifndef USDT2
3412   DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3413 #else /* USDT2 */
3414  HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3415                                    ret);
3416 #endif /* USDT2 */
3417   return ret;
3418 JNI_END
3419 
3420 
3421 //
3422 // Object Array Operations
3423 //
3424 
3425 #ifndef USDT2
3426 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3427 #else /* USDT2 */
3428 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3429                     , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3430 #endif /* USDT2 */
3431 
3432 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3433   JNIWrapper("NewObjectArray");
3434 #ifndef USDT2
3435   DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3436 #else /* USDT2 */
3437  HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3438                                   env, length, elementClass, initialElement);
3439 #endif /* USDT2 */
3440   jobjectArray ret = NULL;
3441   DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3442   KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3443   Klass* ako = Klass::cast(ek())->array_klass(CHECK_NULL);
3444   KlassHandle ak = KlassHandle(THREAD, ako);
3445   objArrayKlass::cast(ak())->initialize(CHECK_NULL);
3446   objArrayOop result = objArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3447   oop initial_value = JNIHandles::resolve(initialElement);
3448   if (initial_value != NULL) {  // array already initialized with NULL
3449     for (int index = 0; index < length; index++) {
3450       result->obj_at_put(index, initial_value);
3451     }
3452   }
3453   ret = (jobjectArray) JNIHandles::make_local(env, result);
3454   return ret;
3455 JNI_END
3456 
3457 #ifndef USDT2
3458 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3459 #else /* USDT2 */
3460 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3461                     , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3462 #endif /* USDT2 */
3463 
3464 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3465   JNIWrapper("GetObjectArrayElement");
3466 #ifndef USDT2
3467   DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3468 #else /* USDT2 */
3469  HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3470                                          env, array, index);
3471 #endif /* USDT2 */
3472   jobject ret = NULL;
3473   DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3474   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3475   if (a->is_within_bounds(index)) {
3476     ret = JNIHandles::make_local(env, a->obj_at(index));
3477     return ret;
3478   } else {
3479     char buf[jintAsStringSize];
3480     sprintf(buf, "%d", index);
3481     THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3482   }
3483 JNI_END
3484 
3485 #ifndef USDT2
3486 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3487 #else /* USDT2 */
3488 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3489                          , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3490 #endif /* USDT2 */
3491 
3492 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3493   JNIWrapper("SetObjectArrayElement");
3494 #ifndef USDT2
3495   DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3496 #else /* USDT2 */
3497  HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3498                                          env, array, index, value);
3499 #endif /* USDT2 */
3500   DT_VOID_RETURN_MARK(SetObjectArrayElement);
3501 
3502   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3503   oop v = JNIHandles::resolve(value);
3504   if (a->is_within_bounds(index)) {
3505     if (v == NULL || v->is_a(objArrayKlass::cast(a->klass())->element_klass())) {
3506       a->obj_at_put(index, v);
3507     } else {
3508       THROW(vmSymbols::java_lang_ArrayStoreException());
3509     }
3510   } else {
3511     char buf[jintAsStringSize];
3512     sprintf(buf, "%d", index);
3513     THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3514   }
3515 JNI_END
3516 
3517 
3518 #ifndef USDT2
3519 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3520 \
3521   DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3522 \
3523 JNI_ENTRY(Return, \
3524           jni_New##Result##Array(JNIEnv *env, jsize len)) \
3525   JNIWrapper("New" XSTR(Result) "Array"); \
3526   DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3527   Return ret = NULL;\
3528   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3529 \
3530   oop obj= oopFactory::Allocator(len, CHECK_0); \
3531   ret = (Return) JNIHandles::make_local(env, obj); \
3532   return ret;\
3533 JNI_END
3534 
3535 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean)
3536 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte)
3537 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short)
3538 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char)
3539 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int)
3540 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long)
3541 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float)
3542 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double)
3543 
3544 #else /* USDT2 */
3545 
3546 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3547                               ,EntryProbe,ReturnProbe)  \
3548 \
3549   DT_RETURN_MARK_DECL(New##Result##Array, Return \
3550                       , ReturnProbe); \
3551 \
3552 JNI_ENTRY(Return, \
3553           jni_New##Result##Array(JNIEnv *env, jsize len)) \
3554   JNIWrapper("New" XSTR(Result) "Array"); \
3555   EntryProbe; \
3556   Return ret = NULL;\
3557   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3558 \
3559   oop obj= oopFactory::Allocator(len, CHECK_0); \
3560   ret = (Return) JNIHandles::make_local(env, obj); \
3561   return ret;\
3562 JNI_END
3563 
3564 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean,
3565                       HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3566                       HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3567 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte,
3568                       HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3569                       HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3570 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short,
3571                       HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3572                       HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3573 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char,
3574                       HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3575                       HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3576 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int,
3577                       HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3578                       HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3579 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long,
3580                       HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3581                       HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3582 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float,
3583                       HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3584                       HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3585 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double,
3586                       HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3587                       HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3588 #endif /* USDT2 */
3589 
3590 // Return an address which will fault if the caller writes to it.
3591 
3592 static char* get_bad_address() {
3593   static char* bad_address = NULL;
3594   if (bad_address == NULL) {
3595     size_t size = os::vm_allocation_granularity();
3596     bad_address = os::reserve_memory(size);
3597     if (bad_address != NULL) {
3598       os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3599                          /*is_committed*/false);
3600     }
3601   }
3602   return bad_address;
3603 }
3604 
3605 
3606 #ifndef USDT2
3607 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3608 \
3609 JNI_QUICK_ENTRY(ElementType*, \
3610           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3611   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3612   DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3613   /* allocate an chunk of memory in c land */ \
3614   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3615   ElementType* result; \
3616   int len = a->length(); \
3617   if (len == 0) { \
3618     /* Empty array: legal but useless, can't return NULL. \
3619      * Return a pointer to something useless. \
3620      * Avoid asserts in typeArrayOop. */ \
3621     result = (ElementType*)get_bad_address(); \
3622   } else { \
3623     result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3624     /* copy the array to the c chunk */ \
3625     memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3626   } \
3627   if (isCopy) *isCopy = JNI_TRUE; \
3628   DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3629   return result; \
3630 JNI_END
3631 
3632 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3633 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte)
3634 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short)
3635 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char)
3636 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int)
3637 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long)
3638 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float)
3639 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double)
3640 
3641 #else /* USDT2 */
3642 
3643 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3644                                       , EntryProbe, ReturnProbe) \
3645 \
3646 JNI_QUICK_ENTRY(ElementType*, \
3647           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3648   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3649   EntryProbe; \
3650   /* allocate an chunk of memory in c land */ \
3651   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3652   ElementType* result; \
3653   int len = a->length(); \
3654   if (len == 0) { \
3655     /* Empty array: legal but useless, can't return NULL. \
3656      * Return a pointer to something useless. \
3657      * Avoid asserts in typeArrayOop. */ \
3658     result = (ElementType*)get_bad_address(); \
3659   } else { \
3660     result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3661     /* copy the array to the c chunk */ \
3662     memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3663   } \
3664   if (isCopy) *isCopy = JNI_TRUE; \
3665   ReturnProbe; \
3666   return result; \
3667 JNI_END
3668 
3669 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3670                               , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3671                               HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3672 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte
3673                               , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3674                               HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3675 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short
3676                               , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3677                               HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3678 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char
3679                               , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3680                               HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3681 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int
3682                               , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3683                               HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3684 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long
3685                               , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3686                               HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3687 // Float and double probes don't return value because dtrace doesn't currently support it
3688 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float
3689                               , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3690                               HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3691 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double
3692                               , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3693                               HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3694 #endif /* USDT2 */
3695 
3696 #ifndef USDT2
3697 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3698 \
3699 JNI_QUICK_ENTRY(void, \
3700           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3701                                              ElementType *buf, jint mode)) \
3702   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3703   DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3704   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3705   int len = a->length(); \
3706   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \
3707     if ((mode == 0) || (mode == JNI_COMMIT)) { \
3708       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3709     } \
3710     if ((mode == 0) || (mode == JNI_ABORT)) { \
3711       FreeHeap(buf); \
3712     } \
3713   } \
3714   DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3715 JNI_END
3716 
3717 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3718 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte)
3719 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short)
3720 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char)
3721 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int)
3722 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long)
3723 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float)
3724 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double)
3725 
3726 #else /* USDT2 */
3727 
3728 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3729                                           , EntryProbe, ReturnProbe);\
3730 \
3731 JNI_QUICK_ENTRY(void, \
3732           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3733                                              ElementType *buf, jint mode)) \
3734   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3735   EntryProbe; \
3736   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3737   int len = a->length(); \
3738   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \
3739     if ((mode == 0) || (mode == JNI_COMMIT)) { \
3740       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3741     } \
3742     if ((mode == 0) || (mode == JNI_ABORT)) { \
3743       FreeHeap(buf); \
3744     } \
3745   } \
3746   ReturnProbe; \
3747 JNI_END
3748 
3749 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3750                                   , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3751                                   HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3752 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte
3753                                   , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3754                                   HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3755 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short
3756                                   ,  HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3757                                   HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3758 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char
3759                                   ,  HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3760                                   HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3761 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int
3762                                   , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3763                                   HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3764 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long
3765                                   , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3766                                   HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3767 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float
3768                                   , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3769                                   HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3770 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double
3771                                   , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3772                                   HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3773 #endif /* USDT2 */
3774 
3775 #ifndef USDT2
3776 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3777   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3778 \
3779 JNI_ENTRY(void, \
3780 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3781              jsize len, ElementType *buf)) \
3782   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3783   DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3784   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3785   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3786   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3787     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3788   } else { \
3789     if (len > 0) { \
3790       int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \
3791       memcpy((u_char*) buf, \
3792              (u_char*) src->Tag##_at_addr(start), \
3793              len << sc);                          \
3794     } \
3795   } \
3796 JNI_END
3797 
3798 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3799 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte)
3800 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short)
3801 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char)
3802 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int)
3803 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long)
3804 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float)
3805 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double)
3806 
3807 #else /* USDT2 */
3808 
3809 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3810                                     , EntryProbe, ReturnProbe); \
3811   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3812                            , ReturnProbe); \
3813 \
3814 JNI_ENTRY(void, \
3815 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3816              jsize len, ElementType *buf)) \
3817   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3818   EntryProbe; \
3819   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3820   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3821   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3822     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3823   } else { \
3824     if (len > 0) { \
3825       int sc = typeArrayKlass::cast(src->klass())->log2_element_size(); \
3826       memcpy((u_char*) buf, \
3827              (u_char*) src->Tag##_at_addr(start), \
3828              len << sc);                          \
3829     } \
3830   } \
3831 JNI_END
3832 
3833 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3834                             , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3835                             HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3836 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte
3837                             ,  HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3838                             HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3839 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short
3840                             , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3841                             HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3842 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char
3843                             ,  HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3844                             HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3845 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int
3846                             , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3847                             HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3848 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long
3849                             ,  HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3850                             HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3851 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float
3852                             , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3853                             HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3854 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double
3855                             , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3856                             HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3857 #endif /* USDT2 */
3858 
3859 #ifndef USDT2
3860 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3861   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3862 \
3863 JNI_ENTRY(void, \
3864 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3865              jsize len, const ElementType *buf)) \
3866   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3867   DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3868   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3869   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3870   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3871     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3872   } else { \
3873     if (len > 0) { \
3874       int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \
3875       memcpy((u_char*) dst->Tag##_at_addr(start), \
3876              (u_char*) buf, \
3877              len << sc);    \
3878     } \
3879   } \
3880 JNI_END
3881 
3882 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3883 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte)
3884 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short)
3885 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char)
3886 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int)
3887 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long)
3888 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float)
3889 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double)
3890 
3891 #else /* USDT2 */
3892 
3893 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3894                                     , EntryProbe, ReturnProbe); \
3895   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3896                            ,ReturnProbe);           \
3897 \
3898 JNI_ENTRY(void, \
3899 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3900              jsize len, const ElementType *buf)) \
3901   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3902   EntryProbe; \
3903   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3904   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3905   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3906     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3907   } else { \
3908     if (len > 0) { \
3909       int sc = typeArrayKlass::cast(dst->klass())->log2_element_size(); \
3910       memcpy((u_char*) dst->Tag##_at_addr(start), \
3911              (u_char*) buf, \
3912              len << sc);    \
3913     } \
3914   } \
3915 JNI_END
3916 
3917 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3918                             , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3919                             HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3920 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte
3921                             , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3922                             HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3923 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short
3924                             , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3925                             HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3926 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char
3927                             , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3928                             HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3929 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int
3930                             , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3931                             HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3932 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long
3933                             , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3934                             HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3935 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float
3936                             , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3937                             HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3938 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double
3939                             , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3940                             HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3941 #endif /* USDT2 */
3942 
3943 
3944 //
3945 // Interception of natives
3946 //
3947 
3948 // The RegisterNatives call being attempted tried to register with a method that
3949 // is not native.  Ask JVM TI what prefixes have been specified.  Then check
3950 // to see if the native method is now wrapped with the prefixes.  See the
3951 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3952 static Method* find_prefixed_native(KlassHandle k,
3953                                       Symbol* name, Symbol* signature, TRAPS) {
3954 #if INCLUDE_JVMTI
3955   ResourceMark rm(THREAD);
3956   Method* method;
3957   int name_len = name->utf8_length();
3958   char* name_str = name->as_utf8();
3959   int prefix_count;
3960   char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3961   for (int i = 0; i < prefix_count; i++) {
3962     char* prefix = prefixes[i];
3963     int prefix_len = (int)strlen(prefix);
3964 
3965     // try adding this prefix to the method name and see if it matches another method name
3966     int trial_len = name_len + prefix_len;
3967     char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3968     strcpy(trial_name_str, prefix);
3969     strcat(trial_name_str, name_str);
3970     TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3971     if (trial_name == NULL) {
3972       continue; // no such symbol, so this prefix wasn't used, try the next prefix
3973     }
3974     method = Klass::cast(k())->lookup_method(trial_name, signature);
3975     if (method == NULL) {
3976       continue; // signature doesn't match, try the next prefix
3977     }
3978     if (method->is_native()) {
3979       method->set_is_prefixed_native();
3980       return method; // wahoo, we found a prefixed version of the method, return it
3981     }
3982     // found as non-native, so prefix is good, add it, probably just need more prefixes
3983     name_len = trial_len;
3984     name_str = trial_name_str;
3985   }
3986 #endif // INCLUDE_JVMTI
3987   return NULL; // not found
3988 }
3989 
3990 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3991   Method* method = Klass::cast(k())->lookup_method(name, signature);
3992   if (method == NULL) {
3993     ResourceMark rm;
3994     stringStream st;
3995     st.print("Method %s name or signature does not match",
3996              Method::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
3997     THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3998   }
3999   if (!method->is_native()) {
4000     // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
4001     method = find_prefixed_native(k, name, signature, THREAD);
4002     if (method == NULL) {
4003       ResourceMark rm;
4004       stringStream st;
4005       st.print("Method %s is not declared as native",
4006                Method::name_and_sig_as_C_string(Klass::cast(k()), name, signature));
4007       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
4008     }
4009   }
4010 
4011   if (entry != NULL) {
4012     method->set_native_function(entry,
4013       Method::native_bind_event_is_interesting);
4014   } else {
4015     method->clear_native_function();
4016   }
4017   if (PrintJNIResolving) {
4018     ResourceMark rm(THREAD);
4019     tty->print_cr("[Registering JNI native method %s.%s]",
4020       Klass::cast(method->method_holder())->external_name(),
4021       method->name()->as_C_string());
4022   }
4023   return true;
4024 }
4025 
4026 #ifndef USDT2
4027 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4028 #else /* USDT2 */
4029 DT_RETURN_MARK_DECL(RegisterNatives, jint
4030                     , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4031 #endif /* USDT2 */
4032 
4033 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4034                                     const JNINativeMethod *methods,
4035                                     jint nMethods))
4036   JNIWrapper("RegisterNatives");
4037 #ifndef USDT2
4038   DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4039 #else /* USDT2 */
4040   HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4041                                     env, clazz, (void *) methods, nMethods);
4042 #endif /* USDT2 */
4043   jint ret = 0;
4044   DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4045 
4046   KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4047 
4048   for (int index = 0; index < nMethods; index++) {
4049     const char* meth_name = methods[index].name;
4050     const char* meth_sig = methods[index].signature;
4051     int meth_name_len = (int)strlen(meth_name);
4052 
4053     // The class should have been loaded (we have an instance of the class
4054     // passed in) so the method and signature should already be in the symbol
4055     // table.  If they're not there, the method doesn't exist.
4056     TempNewSymbol  name = SymbolTable::probe(meth_name, meth_name_len);
4057     TempNewSymbol  signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4058 
4059     if (name == NULL || signature == NULL) {
4060       ResourceMark rm;
4061       stringStream st;
4062       st.print("Method %s.%s%s not found", Klass::cast(h_k())->external_name(), meth_name, meth_sig);
4063       // Must return negative value on failure
4064       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4065     }
4066 
4067     bool res = register_native(h_k, name, signature,
4068                                (address) methods[index].fnPtr, THREAD);
4069     if (!res) {
4070       ret = -1;
4071       break;
4072     }
4073   }
4074   return ret;
4075 JNI_END
4076 
4077 
4078 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4079   JNIWrapper("UnregisterNatives");
4080 #ifndef USDT2
4081   DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4082 #else /* USDT2 */
4083  HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4084                                      env, clazz);
4085 #endif /* USDT2 */
4086   Klass* k   = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4087   //%note jni_2
4088   if (Klass::cast(k)->oop_is_instance()) {
4089     for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4090       Method* m = InstanceKlass::cast(k)->methods()->at(index);
4091       if (m->is_native()) {
4092         m->clear_native_function();
4093         m->set_signature_handler(NULL);
4094       }
4095     }
4096   }
4097 #ifndef USDT2
4098   DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4099 #else /* USDT2 */
4100  HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4101                                       0);
4102 #endif /* USDT2 */
4103   return 0;
4104 JNI_END
4105 
4106 //
4107 // Monitor functions
4108 //
4109 
4110 #ifndef USDT2
4111 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4112 #else /* USDT2 */
4113 DT_RETURN_MARK_DECL(MonitorEnter, jint
4114                     , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4115 #endif /* USDT2 */
4116 
4117 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4118 #ifndef USDT2
4119   DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4120 #else /* USDT2 */
4121  HOTSPOT_JNI_MONITORENTER_ENTRY(
4122                                 env, jobj);
4123 #endif /* USDT2 */
4124   jint ret = JNI_ERR;
4125   DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4126 
4127   // If the object is null, we can't do anything with it
4128   if (jobj == NULL) {
4129     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4130   }
4131 
4132   Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4133   ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4134   ret = JNI_OK;
4135   return ret;
4136 JNI_END
4137 
4138 #ifndef USDT2
4139 DT_RETURN_MARK_DECL(MonitorExit, jint);
4140 #else /* USDT2 */
4141 DT_RETURN_MARK_DECL(MonitorExit, jint
4142                     , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4143 #endif /* USDT2 */
4144 
4145 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4146 #ifndef USDT2
4147   DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4148 #else /* USDT2 */
4149  HOTSPOT_JNI_MONITOREXIT_ENTRY(
4150                                env, jobj);
4151 #endif /* USDT2 */
4152   jint ret = JNI_ERR;
4153   DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4154 
4155   // Don't do anything with a null object
4156   if (jobj == NULL) {
4157     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4158   }
4159 
4160   Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4161   ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4162 
4163   ret = JNI_OK;
4164   return ret;
4165 JNI_END
4166 
4167 //
4168 // Extensions
4169 //
4170 
4171 #ifndef USDT2
4172 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4173 #else /* USDT2 */
4174 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4175                          , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4176 #endif /* USDT2 */
4177 
4178 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4179   JNIWrapper("GetStringRegion");
4180 #ifndef USDT2
4181   DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4182 #else /* USDT2 */
4183  HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4184                                    env, string, start, len, buf);
4185 #endif /* USDT2 */
4186   DT_VOID_RETURN_MARK(GetStringRegion);
4187   oop s = JNIHandles::resolve_non_null(string);
4188   int s_len = java_lang_String::length(s);
4189   if (start < 0 || len < 0 || start + len > s_len) {
4190     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4191   } else {
4192     if (len > 0) {
4193       int s_offset = java_lang_String::offset(s);
4194       typeArrayOop s_value = java_lang_String::value(s);
4195       memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4196     }
4197   }
4198 JNI_END
4199 
4200 #ifndef USDT2
4201 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4202 #else /* USDT2 */
4203 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4204                          , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4205 #endif /* USDT2 */
4206 
4207 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4208   JNIWrapper("GetStringUTFRegion");
4209 #ifndef USDT2
4210   DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4211 #else /* USDT2 */
4212  HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4213                                       env, string, start, len, buf);
4214 #endif /* USDT2 */
4215   DT_VOID_RETURN_MARK(GetStringUTFRegion);
4216   oop s = JNIHandles::resolve_non_null(string);
4217   int s_len = java_lang_String::length(s);
4218   if (start < 0 || len < 0 || start + len > s_len) {
4219     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4220   } else {
4221     //%note jni_7
4222     if (len > 0) {
4223       ResourceMark rm(THREAD);
4224       char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4225       int utf_len = (int)strlen(utf_region);
4226       memcpy(buf, utf_region, utf_len);
4227       buf[utf_len] = 0;
4228     } else {
4229       // JDK null-terminates the buffer even in len is zero
4230       if (buf != NULL) {
4231         buf[0] = 0;
4232       }
4233     }
4234   }
4235 JNI_END
4236 
4237 
4238 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4239   JNIWrapper("GetPrimitiveArrayCritical");
4240 #ifndef USDT2
4241   DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4242 #else /* USDT2 */
4243  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4244                                              env, array, (uintptr_t *) isCopy);
4245 #endif /* USDT2 */
4246   GC_locker::lock_critical(thread);
4247   if (isCopy != NULL) {
4248     *isCopy = JNI_FALSE;
4249   }
4250   oop a = JNIHandles::resolve_non_null(array);
4251   assert(a->is_array(), "just checking");
4252   BasicType type;
4253   if (a->is_objArray()) {
4254     type = T_OBJECT;
4255   } else {
4256     type = typeArrayKlass::cast(a->klass())->element_type();
4257   }
4258   void* ret = arrayOop(a)->base(type);
4259 #ifndef USDT2
4260   DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4261 #else /* USDT2 */
4262  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4263                                               ret);
4264 #endif /* USDT2 */
4265   return ret;
4266 JNI_END
4267 
4268 
4269 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4270   JNIWrapper("ReleasePrimitiveArrayCritical");
4271 #ifndef USDT2
4272   DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4273 #else /* USDT2 */
4274   HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4275                                                   env, array, carray, mode);
4276 #endif /* USDT2 */
4277   // The array, carray and mode arguments are ignored
4278   GC_locker::unlock_critical(thread);
4279 #ifndef USDT2
4280   DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4281 #else /* USDT2 */
4282 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4283 );
4284 #endif /* USDT2 */
4285 JNI_END
4286 
4287 
4288 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4289   JNIWrapper("GetStringCritical");
4290 #ifndef USDT2
4291   DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4292 #else /* USDT2 */
4293   HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4294                                       env, string, (uintptr_t *) isCopy);
4295 #endif /* USDT2 */
4296   GC_locker::lock_critical(thread);
4297   if (isCopy != NULL) {
4298     *isCopy = JNI_FALSE;
4299   }
4300   oop s = JNIHandles::resolve_non_null(string);
4301   int s_len = java_lang_String::length(s);
4302   typeArrayOop s_value = java_lang_String::value(s);
4303   int s_offset = java_lang_String::offset(s);
4304   const jchar* ret;
4305   if (s_len > 0) {
4306     ret = s_value->char_at_addr(s_offset);
4307   } else {
4308     ret = (jchar*) s_value->base(T_CHAR);
4309   }
4310 #ifndef USDT2
4311   DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4312 #else /* USDT2 */
4313  HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4314                                       (uint16_t *) ret);
4315 #endif /* USDT2 */
4316   return ret;
4317 JNI_END
4318 
4319 
4320 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4321   JNIWrapper("ReleaseStringCritical");
4322 #ifndef USDT2
4323   DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4324 #else /* USDT2 */
4325   HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4326                                           env, str, (uint16_t *) chars);
4327 #endif /* USDT2 */
4328   // The str and chars arguments are ignored
4329   GC_locker::unlock_critical(thread);
4330 #ifndef USDT2
4331   DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4332 #else /* USDT2 */
4333 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4334 );
4335 #endif /* USDT2 */
4336 JNI_END
4337 
4338 
4339 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4340   JNIWrapper("jni_NewWeakGlobalRef");
4341 #ifndef USDT2
4342   DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4343 #else /* USDT2 */
4344  HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4345                                     env, ref);
4346 #endif /* USDT2 */
4347   Handle ref_handle(thread, JNIHandles::resolve(ref));
4348   jweak ret = JNIHandles::make_weak_global(ref_handle);
4349 #ifndef USDT2
4350   DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4351 #else /* USDT2 */
4352  HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4353                                      ret);
4354 #endif /* USDT2 */
4355   return ret;
4356 JNI_END
4357 
4358 // Must be JNI_ENTRY (with HandleMark)
4359 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4360   JNIWrapper("jni_DeleteWeakGlobalRef");
4361 #ifndef USDT2
4362   DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4363 #else /* USDT2 */
4364   HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4365                                         env, ref);
4366 #endif /* USDT2 */
4367   JNIHandles::destroy_weak_global(ref);
4368 #ifndef USDT2
4369   DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4370 #else /* USDT2 */
4371   HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4372                                          );
4373 #endif /* USDT2 */
4374 JNI_END
4375 
4376 
4377 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4378   JNIWrapper("jni_ExceptionCheck");
4379 #ifndef USDT2
4380   DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4381 #else /* USDT2 */
4382  HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4383                                   env);
4384 #endif /* USDT2 */
4385   jni_check_async_exceptions(thread);
4386   jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4387 #ifndef USDT2
4388   DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4389 #else /* USDT2 */
4390  HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4391                                    ret);
4392 #endif /* USDT2 */
4393   return ret;
4394 JNI_END
4395 
4396 
4397 // Initialization state for three routines below relating to
4398 // java.nio.DirectBuffers
4399 static          jint directBufferSupportInitializeStarted = 0;
4400 static volatile jint directBufferSupportInitializeEnded   = 0;
4401 static volatile jint directBufferSupportInitializeFailed  = 0;
4402 static jclass    bufferClass                 = NULL;
4403 static jclass    directBufferClass           = NULL;
4404 static jclass    directByteBufferClass       = NULL;
4405 static jmethodID directByteBufferConstructor = NULL;
4406 static jfieldID  directBufferAddressField    = NULL;
4407 static jfieldID  bufferCapacityField         = NULL;
4408 
4409 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4410   Handle loader;            // null (bootstrap) loader
4411   Handle protection_domain; // null protection domain
4412 
4413   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4414   jclass result =  find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4415 
4416   if (TraceClassResolution && result != NULL) {
4417     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4418   }
4419   return result;
4420 }
4421 
4422 // These lookups are done with the NULL (bootstrap) ClassLoader to
4423 // circumvent any security checks that would be done by jni_FindClass.
4424 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4425 {
4426   if ((bufferClass           = lookupOne(env, "java/nio/Buffer", thread))           == NULL) { return false; }
4427   if ((directBufferClass     = lookupOne(env, "sun/nio/ch/DirectBuffer", thread))   == NULL) { return false; }
4428   if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4429   return true;
4430 }
4431 JNI_END
4432 
4433 
4434 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4435   if (directBufferSupportInitializeFailed) {
4436     return false;
4437   }
4438 
4439   if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4440     if (!lookupDirectBufferClasses(env)) {
4441       directBufferSupportInitializeFailed = 1;
4442       return false;
4443     }
4444 
4445     // Make global references for these
4446     bufferClass           = (jclass) env->NewGlobalRef(bufferClass);
4447     directBufferClass     = (jclass) env->NewGlobalRef(directBufferClass);
4448     directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4449 
4450     // Get needed field and method IDs
4451     directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4452     directBufferAddressField    = env->GetFieldID(bufferClass, "address", "J");
4453     bufferCapacityField         = env->GetFieldID(bufferClass, "capacity", "I");
4454 
4455     if ((directByteBufferConstructor == NULL) ||
4456         (directBufferAddressField    == NULL) ||
4457         (bufferCapacityField         == NULL)) {
4458       directBufferSupportInitializeFailed = 1;
4459       return false;
4460     }
4461 
4462     directBufferSupportInitializeEnded = 1;
4463   } else {
4464     while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4465       // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4466       // os::sleep which requires the VM state transition. On other platforms, it
4467       // is not necessary. The following call to change the VM state is purposely
4468       // put inside the loop to avoid potential deadlock when multiple threads
4469       // try to call this method. See 6791815 for more details.
4470       ThreadInVMfromNative tivn(thread);
4471       os::yield_all();
4472     }
4473   }
4474 
4475   return !directBufferSupportInitializeFailed;
4476 }
4477 
4478 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4479 {
4480   // thread_from_jni_environment() will block if VM is gone.
4481   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4482 
4483   JNIWrapper("jni_NewDirectByteBuffer");
4484 #ifndef USDT2
4485   DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4486 #else /* USDT2 */
4487  HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4488                                        env, address, capacity);
4489 #endif /* USDT2 */
4490 
4491   if (!directBufferSupportInitializeEnded) {
4492     if (!initializeDirectBufferSupport(env, thread)) {
4493 #ifndef USDT2
4494       DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4495 #else /* USDT2 */
4496       HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4497                                              NULL);
4498 #endif /* USDT2 */
4499       return NULL;
4500     }
4501   }
4502 
4503   // Being paranoid about accidental sign extension on address
4504   jlong addr = (jlong) ((uintptr_t) address);
4505   // NOTE that package-private DirectByteBuffer constructor currently
4506   // takes int capacity
4507   jint  cap  = (jint)  capacity;
4508   jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4509 #ifndef USDT2
4510   DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4511 #else /* USDT2 */
4512   HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4513                                          ret);
4514 #endif /* USDT2 */
4515   return ret;
4516 }
4517 
4518 #ifndef USDT2
4519 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4520 #else /* USDT2 */
4521 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4522                     , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4523 #endif /* USDT2 */
4524 
4525 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4526 {
4527   // thread_from_jni_environment() will block if VM is gone.
4528   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4529 
4530   JNIWrapper("jni_GetDirectBufferAddress");
4531 #ifndef USDT2
4532   DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4533 #else /* USDT2 */
4534   HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4535                                            env, buf);
4536 #endif /* USDT2 */
4537   void* ret = NULL;
4538   DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4539 
4540   if (!directBufferSupportInitializeEnded) {
4541     if (!initializeDirectBufferSupport(env, thread)) {
4542       return 0;
4543     }
4544   }
4545 
4546   if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4547     return 0;
4548   }
4549 
4550   ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4551   return ret;
4552 }
4553 
4554 #ifndef USDT2
4555 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4556 #else /* USDT2 */
4557 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4558                     , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4559 #endif /* USDT2 */
4560 
4561 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4562 {
4563   // thread_from_jni_environment() will block if VM is gone.
4564   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4565 
4566   JNIWrapper("jni_GetDirectBufferCapacity");
4567 #ifndef USDT2
4568   DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4569 #else /* USDT2 */
4570   HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4571                                             env, buf);
4572 #endif /* USDT2 */
4573   jlong ret = -1;
4574   DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4575 
4576   if (!directBufferSupportInitializeEnded) {
4577     if (!initializeDirectBufferSupport(env, thread)) {
4578       ret = 0;
4579       return ret;
4580     }
4581   }
4582 
4583   if (buf == NULL) {
4584     return -1;
4585   }
4586 
4587   if (!env->IsInstanceOf(buf, directBufferClass)) {
4588     return -1;
4589   }
4590 
4591   // NOTE that capacity is currently an int in the implementation
4592   ret = env->GetIntField(buf, bufferCapacityField);
4593   return ret;
4594 }
4595 
4596 
4597 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4598   JNIWrapper("GetVersion");
4599 #ifndef USDT2
4600   DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4601 #else /* USDT2 */
4602   HOTSPOT_JNI_GETVERSION_ENTRY(
4603                                env);
4604 #endif /* USDT2 */
4605 #ifndef USDT2
4606   DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4607 #else /* USDT2 */
4608   HOTSPOT_JNI_GETVERSION_RETURN(
4609                                 CurrentVersion);
4610 #endif /* USDT2 */
4611   return CurrentVersion;
4612 JNI_END
4613 
4614 extern struct JavaVM_ main_vm;
4615 
4616 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4617   JNIWrapper("jni_GetJavaVM");
4618 #ifndef USDT2
4619   DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4620 #else /* USDT2 */
4621   HOTSPOT_JNI_GETJAVAVM_ENTRY(
4622                               env, (void **) vm);
4623 #endif /* USDT2 */
4624   *vm  = (JavaVM *)(&main_vm);
4625 #ifndef USDT2
4626   DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4627 #else /* USDT2 */
4628   HOTSPOT_JNI_GETJAVAVM_RETURN(
4629                                JNI_OK);
4630 #endif /* USDT2 */
4631   return JNI_OK;
4632 JNI_END
4633 
4634 // Structure containing all jni functions
4635 struct JNINativeInterface_ jni_NativeInterface = {
4636     NULL,
4637     NULL,
4638     NULL,
4639 
4640     NULL,
4641 
4642     jni_GetVersion,
4643 
4644     jni_DefineClass,
4645     jni_FindClass,
4646 
4647     jni_FromReflectedMethod,
4648     jni_FromReflectedField,
4649 
4650     jni_ToReflectedMethod,
4651 
4652     jni_GetSuperclass,
4653     jni_IsAssignableFrom,
4654 
4655     jni_ToReflectedField,
4656 
4657     jni_Throw,
4658     jni_ThrowNew,
4659     jni_ExceptionOccurred,
4660     jni_ExceptionDescribe,
4661     jni_ExceptionClear,
4662     jni_FatalError,
4663 
4664     jni_PushLocalFrame,
4665     jni_PopLocalFrame,
4666 
4667     jni_NewGlobalRef,
4668     jni_DeleteGlobalRef,
4669     jni_DeleteLocalRef,
4670     jni_IsSameObject,
4671 
4672     jni_NewLocalRef,
4673     jni_EnsureLocalCapacity,
4674 
4675     jni_AllocObject,
4676     jni_NewObject,
4677     jni_NewObjectV,
4678     jni_NewObjectA,
4679 
4680     jni_GetObjectClass,
4681     jni_IsInstanceOf,
4682 
4683     jni_GetMethodID,
4684 
4685     jni_CallObjectMethod,
4686     jni_CallObjectMethodV,
4687     jni_CallObjectMethodA,
4688     jni_CallBooleanMethod,
4689     jni_CallBooleanMethodV,
4690     jni_CallBooleanMethodA,
4691     jni_CallByteMethod,
4692     jni_CallByteMethodV,
4693     jni_CallByteMethodA,
4694     jni_CallCharMethod,
4695     jni_CallCharMethodV,
4696     jni_CallCharMethodA,
4697     jni_CallShortMethod,
4698     jni_CallShortMethodV,
4699     jni_CallShortMethodA,
4700     jni_CallIntMethod,
4701     jni_CallIntMethodV,
4702     jni_CallIntMethodA,
4703     jni_CallLongMethod,
4704     jni_CallLongMethodV,
4705     jni_CallLongMethodA,
4706     jni_CallFloatMethod,
4707     jni_CallFloatMethodV,
4708     jni_CallFloatMethodA,
4709     jni_CallDoubleMethod,
4710     jni_CallDoubleMethodV,
4711     jni_CallDoubleMethodA,
4712     jni_CallVoidMethod,
4713     jni_CallVoidMethodV,
4714     jni_CallVoidMethodA,
4715 
4716     jni_CallNonvirtualObjectMethod,
4717     jni_CallNonvirtualObjectMethodV,
4718     jni_CallNonvirtualObjectMethodA,
4719     jni_CallNonvirtualBooleanMethod,
4720     jni_CallNonvirtualBooleanMethodV,
4721     jni_CallNonvirtualBooleanMethodA,
4722     jni_CallNonvirtualByteMethod,
4723     jni_CallNonvirtualByteMethodV,
4724     jni_CallNonvirtualByteMethodA,
4725     jni_CallNonvirtualCharMethod,
4726     jni_CallNonvirtualCharMethodV,
4727     jni_CallNonvirtualCharMethodA,
4728     jni_CallNonvirtualShortMethod,
4729     jni_CallNonvirtualShortMethodV,
4730     jni_CallNonvirtualShortMethodA,
4731     jni_CallNonvirtualIntMethod,
4732     jni_CallNonvirtualIntMethodV,
4733     jni_CallNonvirtualIntMethodA,
4734     jni_CallNonvirtualLongMethod,
4735     jni_CallNonvirtualLongMethodV,
4736     jni_CallNonvirtualLongMethodA,
4737     jni_CallNonvirtualFloatMethod,
4738     jni_CallNonvirtualFloatMethodV,
4739     jni_CallNonvirtualFloatMethodA,
4740     jni_CallNonvirtualDoubleMethod,
4741     jni_CallNonvirtualDoubleMethodV,
4742     jni_CallNonvirtualDoubleMethodA,
4743     jni_CallNonvirtualVoidMethod,
4744     jni_CallNonvirtualVoidMethodV,
4745     jni_CallNonvirtualVoidMethodA,
4746 
4747     jni_GetFieldID,
4748 
4749     jni_GetObjectField,
4750     jni_GetBooleanField,
4751     jni_GetByteField,
4752     jni_GetCharField,
4753     jni_GetShortField,
4754     jni_GetIntField,
4755     jni_GetLongField,
4756     jni_GetFloatField,
4757     jni_GetDoubleField,
4758 
4759     jni_SetObjectField,
4760     jni_SetBooleanField,
4761     jni_SetByteField,
4762     jni_SetCharField,
4763     jni_SetShortField,
4764     jni_SetIntField,
4765     jni_SetLongField,
4766     jni_SetFloatField,
4767     jni_SetDoubleField,
4768 
4769     jni_GetStaticMethodID,
4770 
4771     jni_CallStaticObjectMethod,
4772     jni_CallStaticObjectMethodV,
4773     jni_CallStaticObjectMethodA,
4774     jni_CallStaticBooleanMethod,
4775     jni_CallStaticBooleanMethodV,
4776     jni_CallStaticBooleanMethodA,
4777     jni_CallStaticByteMethod,
4778     jni_CallStaticByteMethodV,
4779     jni_CallStaticByteMethodA,
4780     jni_CallStaticCharMethod,
4781     jni_CallStaticCharMethodV,
4782     jni_CallStaticCharMethodA,
4783     jni_CallStaticShortMethod,
4784     jni_CallStaticShortMethodV,
4785     jni_CallStaticShortMethodA,
4786     jni_CallStaticIntMethod,
4787     jni_CallStaticIntMethodV,
4788     jni_CallStaticIntMethodA,
4789     jni_CallStaticLongMethod,
4790     jni_CallStaticLongMethodV,
4791     jni_CallStaticLongMethodA,
4792     jni_CallStaticFloatMethod,
4793     jni_CallStaticFloatMethodV,
4794     jni_CallStaticFloatMethodA,
4795     jni_CallStaticDoubleMethod,
4796     jni_CallStaticDoubleMethodV,
4797     jni_CallStaticDoubleMethodA,
4798     jni_CallStaticVoidMethod,
4799     jni_CallStaticVoidMethodV,
4800     jni_CallStaticVoidMethodA,
4801 
4802     jni_GetStaticFieldID,
4803 
4804     jni_GetStaticObjectField,
4805     jni_GetStaticBooleanField,
4806     jni_GetStaticByteField,
4807     jni_GetStaticCharField,
4808     jni_GetStaticShortField,
4809     jni_GetStaticIntField,
4810     jni_GetStaticLongField,
4811     jni_GetStaticFloatField,
4812     jni_GetStaticDoubleField,
4813 
4814     jni_SetStaticObjectField,
4815     jni_SetStaticBooleanField,
4816     jni_SetStaticByteField,
4817     jni_SetStaticCharField,
4818     jni_SetStaticShortField,
4819     jni_SetStaticIntField,
4820     jni_SetStaticLongField,
4821     jni_SetStaticFloatField,
4822     jni_SetStaticDoubleField,
4823 
4824     jni_NewString,
4825     jni_GetStringLength,
4826     jni_GetStringChars,
4827     jni_ReleaseStringChars,
4828 
4829     jni_NewStringUTF,
4830     jni_GetStringUTFLength,
4831     jni_GetStringUTFChars,
4832     jni_ReleaseStringUTFChars,
4833 
4834     jni_GetArrayLength,
4835 
4836     jni_NewObjectArray,
4837     jni_GetObjectArrayElement,
4838     jni_SetObjectArrayElement,
4839 
4840     jni_NewBooleanArray,
4841     jni_NewByteArray,
4842     jni_NewCharArray,
4843     jni_NewShortArray,
4844     jni_NewIntArray,
4845     jni_NewLongArray,
4846     jni_NewFloatArray,
4847     jni_NewDoubleArray,
4848 
4849     jni_GetBooleanArrayElements,
4850     jni_GetByteArrayElements,
4851     jni_GetCharArrayElements,
4852     jni_GetShortArrayElements,
4853     jni_GetIntArrayElements,
4854     jni_GetLongArrayElements,
4855     jni_GetFloatArrayElements,
4856     jni_GetDoubleArrayElements,
4857 
4858     jni_ReleaseBooleanArrayElements,
4859     jni_ReleaseByteArrayElements,
4860     jni_ReleaseCharArrayElements,
4861     jni_ReleaseShortArrayElements,
4862     jni_ReleaseIntArrayElements,
4863     jni_ReleaseLongArrayElements,
4864     jni_ReleaseFloatArrayElements,
4865     jni_ReleaseDoubleArrayElements,
4866 
4867     jni_GetBooleanArrayRegion,
4868     jni_GetByteArrayRegion,
4869     jni_GetCharArrayRegion,
4870     jni_GetShortArrayRegion,
4871     jni_GetIntArrayRegion,
4872     jni_GetLongArrayRegion,
4873     jni_GetFloatArrayRegion,
4874     jni_GetDoubleArrayRegion,
4875 
4876     jni_SetBooleanArrayRegion,
4877     jni_SetByteArrayRegion,
4878     jni_SetCharArrayRegion,
4879     jni_SetShortArrayRegion,
4880     jni_SetIntArrayRegion,
4881     jni_SetLongArrayRegion,
4882     jni_SetFloatArrayRegion,
4883     jni_SetDoubleArrayRegion,
4884 
4885     jni_RegisterNatives,
4886     jni_UnregisterNatives,
4887 
4888     jni_MonitorEnter,
4889     jni_MonitorExit,
4890 
4891     jni_GetJavaVM,
4892 
4893     jni_GetStringRegion,
4894     jni_GetStringUTFRegion,
4895 
4896     jni_GetPrimitiveArrayCritical,
4897     jni_ReleasePrimitiveArrayCritical,
4898 
4899     jni_GetStringCritical,
4900     jni_ReleaseStringCritical,
4901 
4902     jni_NewWeakGlobalRef,
4903     jni_DeleteWeakGlobalRef,
4904 
4905     jni_ExceptionCheck,
4906 
4907     jni_NewDirectByteBuffer,
4908     jni_GetDirectBufferAddress,
4909     jni_GetDirectBufferCapacity,
4910 
4911     // New 1_6 features
4912 
4913     jni_GetObjectRefType
4914 };
4915 
4916 
4917 // For jvmti use to modify jni function table.
4918 // Java threads in native contiues to run until it is transitioned
4919 // to VM at safepoint. Before the transition or before it is blocked
4920 // for safepoint it may access jni function table. VM could crash if
4921 // any java thread access the jni function table in the middle of memcpy.
4922 // To avoid this each function pointers are copied automically.
4923 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4924   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4925   intptr_t *a = (intptr_t *) jni_functions();
4926   intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4927   for (uint i=0; i <  sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4928     Atomic::store_ptr(*b++, a++);
4929   }
4930 }
4931 
4932 void quicken_jni_functions() {
4933   // Replace Get<Primitive>Field with fast versions
4934   if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4935       && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4936 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4937       // windows x86 currently needs SEH wrapper and the gain of the fast
4938       // versions currently isn't certain for server vm on uniprocessor.
4939       && os::is_MP()
4940 #endif
4941   ) {
4942     address func;
4943     func = JNI_FastGetField::generate_fast_get_boolean_field();
4944     if (func != (address)-1) {
4945       jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4946     }
4947     func = JNI_FastGetField::generate_fast_get_byte_field();
4948     if (func != (address)-1) {
4949       jni_NativeInterface.GetByteField = (GetByteField_t)func;
4950     }
4951     func = JNI_FastGetField::generate_fast_get_char_field();
4952     if (func != (address)-1) {
4953       jni_NativeInterface.GetCharField = (GetCharField_t)func;
4954     }
4955     func = JNI_FastGetField::generate_fast_get_short_field();
4956     if (func != (address)-1) {
4957       jni_NativeInterface.GetShortField = (GetShortField_t)func;
4958     }
4959     func = JNI_FastGetField::generate_fast_get_int_field();
4960     if (func != (address)-1) {
4961       jni_NativeInterface.GetIntField = (GetIntField_t)func;
4962     }
4963     func = JNI_FastGetField::generate_fast_get_long_field();
4964     if (func != (address)-1) {
4965       jni_NativeInterface.GetLongField = (GetLongField_t)func;
4966     }
4967     func = JNI_FastGetField::generate_fast_get_float_field();
4968     if (func != (address)-1) {
4969       jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4970     }
4971     func = JNI_FastGetField::generate_fast_get_double_field();
4972     if (func != (address)-1) {
4973       jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4974     }
4975   }
4976 }
4977 
4978 // Returns the function structure
4979 struct JNINativeInterface_* jni_functions() {
4980 #if INCLUDE_JNI_CHECK
4981   if (CheckJNICalls) return jni_functions_check();
4982 #endif // INCLUDE_JNI_CHECK
4983   return &jni_NativeInterface;
4984 }
4985 
4986 // Returns the function structure
4987 struct JNINativeInterface_* jni_functions_nocheck() {
4988   return &jni_NativeInterface;
4989 }
4990 
4991 
4992 // Invocation API
4993 
4994 
4995 // Forward declaration
4996 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4997 
4998 // Global invocation API vars
4999 volatile jint vm_created = 0;
5000 // Indicate whether it is safe to recreate VM
5001 volatile jint safe_to_recreate_vm = 1;
5002 struct JavaVM_ main_vm = {&jni_InvokeInterface};
5003 
5004 
5005 #define JAVASTACKSIZE (400 * 1024)    /* Default size of a thread java stack */
5006 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
5007 
5008 #ifndef USDT2
5009 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
5010 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
5011 #else /* USDT2 */
5012 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
5013                     , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
5014 #endif /* USDT2 */
5015 
5016 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5017 #ifndef USDT2
5018   HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5019 #else /* USDT2 */
5020   HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5021                                              args_);
5022 #endif /* USDT2 */
5023   JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5024   jint ret = JNI_ERR;
5025   DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5026 
5027   if (Threads::is_supported_jni_version(args->version)) {
5028     ret = JNI_OK;
5029   }
5030   // 1.1 style no longer supported in hotspot.
5031   // According the JNI spec, we should update args->version on return.
5032   // We also use the structure to communicate with launcher about default
5033   // stack size.
5034   if (args->version == JNI_VERSION_1_1) {
5035     args->version = JNI_VERSION_1_2;
5036     // javaStackSize is int in arguments structure
5037     assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5038     args->javaStackSize = (jint)(ThreadStackSize * K);
5039   }
5040   return ret;
5041 }
5042 
5043 #ifndef PRODUCT
5044 
5045 #include "gc_interface/collectedHeap.hpp"
5046 #include "utilities/quickSort.hpp"
5047 
5048 #define run_unit_test(unit_test_function_call)              \
5049   tty->print_cr("Running test: " #unit_test_function_call); \
5050   unit_test_function_call
5051 
5052 void execute_internal_vm_tests() {
5053   if (ExecuteInternalVMTests) {
5054     tty->print_cr("Running internal VM tests");
5055     run_unit_test(arrayOopDesc::test_max_array_length());
5056     run_unit_test(CollectedHeap::test_is_in());
5057     run_unit_test(QuickSort::test_quick_sort());
5058     run_unit_test(AltHashing::test_alt_hash());
5059     tty->print_cr("All internal VM tests passed");
5060   }
5061 }
5062 
5063 #undef run_unit_test
5064 
5065 #endif
5066 
5067 #ifndef USDT2
5068 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5069 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5070 #else /* USDT2 */
5071 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5072                     , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5073 #endif /* USDT2 */
5074 
5075 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5076 #ifndef USDT2
5077   HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5078 #else /* USDT2 */
5079   HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5080                                  (void **) vm, penv, args);
5081 #endif /* USDT2 */
5082 
5083   jint result = JNI_ERR;
5084   DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5085 
5086   // We're about to use Atomic::xchg for synchronization.  Some Zero
5087   // platforms use the GCC builtin __sync_lock_test_and_set for this,
5088   // but __sync_lock_test_and_set is not guaranteed to do what we want
5089   // on all architectures.  So we check it works before relying on it.
5090 #if defined(ZERO) && defined(ASSERT)
5091   {
5092     jint a = 0xcafebabe;
5093     jint b = Atomic::xchg(0xdeadbeef, &a);
5094     void *c = &a;
5095     void *d = Atomic::xchg_ptr(&b, &c);
5096     assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5097     assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5098   }
5099 #endif // ZERO && ASSERT
5100 
5101   // At the moment it's only possible to have one Java VM,
5102   // since some of the runtime state is in global variables.
5103 
5104   // We cannot use our mutex locks here, since they only work on
5105   // Threads. We do an atomic compare and exchange to ensure only
5106   // one thread can call this method at a time
5107 
5108   // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5109   // the add/dec implementations are dependent on whether we are running
5110   // on a multiprocessor, and at this stage of initialization the os::is_MP
5111   // function used to determine this will always return false. Atomic::xchg
5112   // does not have this problem.
5113   if (Atomic::xchg(1, &vm_created) == 1) {
5114     return JNI_ERR;   // already created, or create attempt in progress
5115   }
5116   if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5117     return JNI_ERR;  // someone tried and failed and retry not allowed.
5118   }
5119 
5120   assert(vm_created == 1, "vm_created is true during the creation");
5121 
5122   /**
5123    * Certain errors during initialization are recoverable and do not
5124    * prevent this method from being called again at a later time
5125    * (perhaps with different arguments).  However, at a certain
5126    * point during initialization if an error occurs we cannot allow
5127    * this function to be called again (or it will crash).  In those
5128    * situations, the 'canTryAgain' flag is set to false, which atomically
5129    * sets safe_to_recreate_vm to 1, such that any new call to
5130    * JNI_CreateJavaVM will immediately fail using the above logic.
5131    */
5132   bool can_try_again = true;
5133 
5134   result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5135   if (result == JNI_OK) {
5136     JavaThread *thread = JavaThread::current();
5137     /* thread is thread_in_vm here */
5138     *vm = (JavaVM *)(&main_vm);
5139     *(JNIEnv**)penv = thread->jni_environment();
5140 
5141     // Tracks the time application was running before GC
5142     RuntimeService::record_application_start();
5143 
5144     // Notify JVMTI
5145     if (JvmtiExport::should_post_thread_life()) {
5146        JvmtiExport::post_thread_start(thread);
5147     }
5148 
5149     EVENT_BEGIN(TraceEventThreadStart, event);
5150     EVENT_COMMIT(event,
5151         EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5152 
5153     // Check if we should compile all classes on bootclasspath
5154     NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();)
5155     // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5156     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5157   } else {
5158     if (can_try_again) {
5159       // reset safe_to_recreate_vm to 1 so that retrial would be possible
5160       safe_to_recreate_vm = 1;
5161     }
5162 
5163     // Creation failed. We must reset vm_created
5164     *vm = 0;
5165     *(JNIEnv**)penv = 0;
5166     // reset vm_created last to avoid race condition. Use OrderAccess to
5167     // control both compiler and architectural-based reordering.
5168     OrderAccess::release_store(&vm_created, 0);
5169   }
5170 
5171   NOT_PRODUCT(test_error_handler(ErrorHandlerTest));
5172   NOT_PRODUCT(execute_internal_vm_tests());
5173   return result;
5174 }
5175 
5176 #ifndef USDT2
5177 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5178   JavaVM**, jsize, jsize*);
5179 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5180 #endif /* !USDT2 */
5181 
5182 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5183   // See bug 4367188, the wrapper can sometimes cause VM crashes
5184   // JNIWrapper("GetCreatedJavaVMs");
5185 #ifndef USDT2
5186   HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5187     vm_buf, bufLen, numVMs);
5188 #else /* USDT2 */
5189   HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5190                                       (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5191 #endif /* USDT2 */
5192   if (vm_created) {
5193     if (numVMs != NULL) *numVMs = 1;
5194     if (bufLen > 0)     *vm_buf = (JavaVM *)(&main_vm);
5195   } else {
5196     if (numVMs != NULL) *numVMs = 0;
5197   }
5198 #ifndef USDT2
5199   HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5200 #else /* USDT2 */
5201   HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5202                                     JNI_OK);
5203 #endif /* USDT2 */
5204   return JNI_OK;
5205 }
5206 
5207 extern "C" {
5208 
5209 #ifndef USDT2
5210 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5211 #else /* USDT2 */
5212 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5213                     , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5214 #endif /* USDT2 */
5215 
5216 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5217 #ifndef USDT2
5218   DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5219 #else /* USDT2 */
5220   HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5221                                   vm);
5222 #endif /* USDT2 */
5223   jint res = JNI_ERR;
5224   DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5225 
5226   if (!vm_created) {
5227     res = JNI_ERR;
5228     return res;
5229   }
5230 
5231   JNIWrapper("DestroyJavaVM");
5232   JNIEnv *env;
5233   JavaVMAttachArgs destroyargs;
5234   destroyargs.version = CurrentVersion;
5235   destroyargs.name = (char *)"DestroyJavaVM";
5236   destroyargs.group = NULL;
5237   res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5238   if (res != JNI_OK) {
5239     return res;
5240   }
5241 
5242   // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5243   JavaThread* thread = JavaThread::current();
5244   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5245   if (Threads::destroy_vm()) {
5246     // Should not change thread state, VM is gone
5247     vm_created = false;
5248     res = JNI_OK;
5249     return res;
5250   } else {
5251     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5252     res = JNI_ERR;
5253     return res;
5254   }
5255 }
5256 
5257 
5258 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5259   JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5260 
5261   // Check below commented out from JDK1.2fcs as well
5262   /*
5263   if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5264     return JNI_EVERSION;
5265   }
5266   */
5267 
5268   Thread* t = ThreadLocalStorage::get_thread_slow();
5269   if (t != NULL) {
5270     // If the thread has been attached this operation is a no-op
5271     *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5272     return JNI_OK;
5273   }
5274 
5275   // Create a thread and mark it as attaching so it will be skipped by the
5276   // ThreadsListEnumerator - see CR 6404306
5277   JavaThread* thread = new JavaThread(true);
5278 
5279   // Set correct safepoint info. The thread is going to call into Java when
5280   // initializing the Java level thread object. Hence, the correct state must
5281   // be set in order for the Safepoint code to deal with it correctly.
5282   thread->set_thread_state(_thread_in_vm);
5283   // Must do this before initialize_thread_local_storage
5284   thread->record_stack_base_and_size();
5285 
5286   thread->initialize_thread_local_storage();
5287 
5288   if (!os::create_attached_thread(thread)) {
5289     delete thread;
5290     return JNI_ERR;
5291   }
5292   // Enable stack overflow checks
5293   thread->create_stack_guard_pages();
5294 
5295   thread->initialize_tlab();
5296 
5297   thread->cache_global_variables();
5298 
5299   // Crucial that we do not have a safepoint check for this thread, since it has
5300   // not been added to the Thread list yet.
5301   { Threads_lock->lock_without_safepoint_check();
5302     // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5303     // avoid this thread trying to do a GC before it is added to the thread-list
5304     thread->set_active_handles(JNIHandleBlock::allocate_block());
5305     Threads::add(thread, daemon);
5306     Threads_lock->unlock();
5307   }
5308   // Create thread group and name info from attach arguments
5309   oop group = NULL;
5310   char* thread_name = NULL;
5311   if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5312     group = JNIHandles::resolve(args->group);
5313     thread_name = args->name; // may be NULL
5314   }
5315   if (group == NULL) group = Universe::main_thread_group();
5316 
5317   // Create Java level thread object and attach it to this thread
5318   bool attach_failed = false;
5319   {
5320     EXCEPTION_MARK;
5321     HandleMark hm(THREAD);
5322     Handle thread_group(THREAD, group);
5323     thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5324     if (HAS_PENDING_EXCEPTION) {
5325       CLEAR_PENDING_EXCEPTION;
5326       // cleanup outside the handle mark.
5327       attach_failed = true;
5328     }
5329   }
5330 
5331   if (attach_failed) {
5332     // Added missing cleanup
5333     thread->cleanup_failed_attach_current_thread();
5334     return JNI_ERR;
5335   }
5336 
5337   // mark the thread as no longer attaching
5338   // this uses a fence to push the change through so we don't have
5339   // to regrab the threads_lock
5340   thread->set_done_attaching_via_jni();
5341 
5342   // Set java thread status.
5343   java_lang_Thread::set_thread_status(thread->threadObj(),
5344               java_lang_Thread::RUNNABLE);
5345 
5346   // Notify the debugger
5347   if (JvmtiExport::should_post_thread_life()) {
5348     JvmtiExport::post_thread_start(thread);
5349   }
5350 
5351   EVENT_BEGIN(TraceEventThreadStart, event);
5352   EVENT_COMMIT(event,
5353       EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5354 
5355   *(JNIEnv**)penv = thread->jni_environment();
5356 
5357   // Now leaving the VM, so change thread_state. This is normally automatically taken care
5358   // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5359   // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5360   // needed.
5361 
5362   ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5363 
5364   // Perform any platform dependent FPU setup
5365   os::setup_fpu();
5366 
5367   return JNI_OK;
5368 }
5369 
5370 
5371 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5372 #ifndef USDT2
5373   DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5374 #else /* USDT2 */
5375   HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5376                                         vm, penv, _args);
5377 #endif /* USDT2 */
5378   if (!vm_created) {
5379 #ifndef USDT2
5380     DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5381 #else /* USDT2 */
5382   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5383                                          (uint32_t) JNI_ERR);
5384 #endif /* USDT2 */
5385     return JNI_ERR;
5386   }
5387 
5388   JNIWrapper("AttachCurrentThread");
5389   jint ret = attach_current_thread(vm, penv, _args, false);
5390 #ifndef USDT2
5391   DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5392 #else /* USDT2 */
5393   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5394                                          ret);
5395 #endif /* USDT2 */
5396   return ret;
5397 }
5398 
5399 
5400 jint JNICALL jni_DetachCurrentThread(JavaVM *vm)  {
5401 #ifndef USDT2
5402   DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5403 #else /* USDT2 */
5404   HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5405                                         vm);
5406 #endif /* USDT2 */
5407   VM_Exit::block_if_vm_exited();
5408 
5409   JNIWrapper("DetachCurrentThread");
5410 
5411   // If the thread has been deattacted the operations is a no-op
5412   if (ThreadLocalStorage::thread() == NULL) {
5413 #ifndef USDT2
5414     DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5415 #else /* USDT2 */
5416   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5417                                          JNI_OK);
5418 #endif /* USDT2 */
5419     return JNI_OK;
5420   }
5421 
5422   JavaThread* thread = JavaThread::current();
5423   if (thread->has_last_Java_frame()) {
5424 #ifndef USDT2
5425     DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5426 #else /* USDT2 */
5427   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5428                                          (uint32_t) JNI_ERR);
5429 #endif /* USDT2 */
5430     // Can't detach a thread that's running java, that can't work.
5431     return JNI_ERR;
5432   }
5433 
5434   // Safepoint support. Have to do call-back to safepoint code, if in the
5435   // middel of a safepoint operation
5436   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5437 
5438   // XXX: Note that JavaThread::exit() call below removes the guards on the
5439   // stack pages set up via enable_stack_{red,yellow}_zone() calls
5440   // above in jni_AttachCurrentThread. Unfortunately, while the setting
5441   // of the guards is visible in jni_AttachCurrentThread above,
5442   // the removal of the guards is buried below in JavaThread::exit()
5443   // here. The abstraction should be more symmetrically either exposed
5444   // or hidden (e.g. it could probably be hidden in the same
5445   // (platform-dependent) methods where we do alternate stack
5446   // maintenance work?)
5447   thread->exit(false, JavaThread::jni_detach);
5448   delete thread;
5449 
5450 #ifndef USDT2
5451   DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5452 #else /* USDT2 */
5453   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5454                                          JNI_OK);
5455 #endif /* USDT2 */
5456   return JNI_OK;
5457 }
5458 
5459 #ifndef USDT2
5460 DT_RETURN_MARK_DECL(GetEnv, jint);
5461 #else /* USDT2 */
5462 DT_RETURN_MARK_DECL(GetEnv, jint
5463                     , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5464 #endif /* USDT2 */
5465 
5466 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5467 #ifndef USDT2
5468   DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5469 #else /* USDT2 */
5470   HOTSPOT_JNI_GETENV_ENTRY(
5471                            vm, penv, version);
5472 #endif /* USDT2 */
5473   jint ret = JNI_ERR;
5474   DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5475 
5476   if (!vm_created) {
5477     *penv = NULL;
5478     ret = JNI_EDETACHED;
5479     return ret;
5480   }
5481 
5482   if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5483     return ret;
5484   }
5485 
5486 #ifndef JVMPI_VERSION_1
5487 // need these in order to be polite about older agents
5488 #define JVMPI_VERSION_1   ((jint)0x10000001)
5489 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5490 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5491 #endif // !JVMPI_VERSION_1
5492 
5493   Thread* thread = ThreadLocalStorage::thread();
5494   if (thread != NULL && thread->is_Java_thread()) {
5495     if (Threads::is_supported_jni_version_including_1_1(version)) {
5496       *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5497       ret = JNI_OK;
5498       return ret;
5499 
5500     } else if (version == JVMPI_VERSION_1 ||
5501                version == JVMPI_VERSION_1_1 ||
5502                version == JVMPI_VERSION_1_2) {
5503       tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5504       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5505       ret = JNI_EVERSION;
5506       return ret;
5507     } else if (JvmtiExport::is_jvmdi_version(version)) {
5508       tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5509       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5510       ret = JNI_EVERSION;
5511       return ret;
5512     } else {
5513       *penv = NULL;
5514       ret = JNI_EVERSION;
5515       return ret;
5516     }
5517   } else {
5518     *penv = NULL;
5519     ret = JNI_EDETACHED;
5520     return ret;
5521   }
5522 }
5523 
5524 
5525 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5526 #ifndef USDT2
5527   DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5528 #else /* USDT2 */
5529   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5530                                                 vm, penv, _args);
5531 #endif /* USDT2 */
5532   if (!vm_created) {
5533 #ifndef USDT2
5534     DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5535 #else /* USDT2 */
5536   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5537                                                  (uint32_t) JNI_ERR);
5538 #endif /* USDT2 */
5539     return JNI_ERR;
5540   }
5541 
5542   JNIWrapper("AttachCurrentThreadAsDaemon");
5543   jint ret = attach_current_thread(vm, penv, _args, true);
5544 #ifndef USDT2
5545   DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5546 #else /* USDT2 */
5547   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5548                                                  ret);
5549 #endif /* USDT2 */
5550   return ret;
5551 }
5552 
5553 
5554 } // End extern "C"
5555 
5556 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5557     NULL,
5558     NULL,
5559     NULL,
5560 
5561     jni_DestroyJavaVM,
5562     jni_AttachCurrentThread,
5563     jni_DetachCurrentThread,
5564     jni_GetEnv,
5565     jni_AttachCurrentThreadAsDaemon
5566 };