1 /*
   2  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2012 Red Hat, Inc.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #include "precompiled.hpp"
  27 #include "ci/ciReplay.hpp"
  28 #include "classfile/altHashing.hpp"
  29 #include "classfile/classLoader.hpp"
  30 #include "classfile/javaClasses.hpp"
  31 #include "classfile/symbolTable.hpp"
  32 #include "classfile/systemDictionary.hpp"
  33 #include "classfile/vmSymbols.hpp"
  34 #include "interpreter/linkResolver.hpp"
  35 #include "utilities/macros.hpp"
  36 #if INCLUDE_ALL_GCS
  37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
  38 #endif // INCLUDE_ALL_GCS
  39 #include "memory/allocation.hpp"
  40 #include "memory/allocation.inline.hpp"
  41 #include "memory/gcLocker.inline.hpp"
  42 #include "memory/oopFactory.hpp"
  43 #include "memory/universe.inline.hpp"
  44 #include "oops/instanceKlass.hpp"
  45 #include "oops/instanceOop.hpp"
  46 #include "oops/markOop.hpp"
  47 #include "oops/method.hpp"
  48 #include "oops/objArrayKlass.hpp"
  49 #include "oops/objArrayOop.hpp"
  50 #include "oops/oop.inline.hpp"
  51 #include "oops/symbol.hpp"
  52 #include "oops/typeArrayKlass.hpp"
  53 #include "oops/typeArrayOop.hpp"
  54 #include "prims/jni.h"
  55 #include "prims/jniCheck.hpp"
  56 #include "prims/jniExport.hpp"
  57 #include "prims/jniFastGetField.hpp"
  58 #include "prims/jvm.h"
  59 #include "prims/jvm_misc.hpp"
  60 #include "prims/jvmtiExport.hpp"
  61 #include "prims/jvmtiThreadState.hpp"
  62 #include "runtime/compilationPolicy.hpp"
  63 #include "runtime/fieldDescriptor.hpp"
  64 #include "runtime/fprofiler.hpp"
  65 #include "runtime/handles.inline.hpp"
  66 #include "runtime/interfaceSupport.hpp"
  67 #include "runtime/java.hpp"
  68 #include "runtime/javaCalls.hpp"
  69 #include "runtime/jfieldIDWorkaround.hpp"
  70 #include "runtime/reflection.hpp"
  71 #include "runtime/sharedRuntime.hpp"
  72 #include "runtime/signature.hpp"
  73 #include "runtime/thread.inline.hpp"
  74 #include "runtime/vm_operations.hpp"
  75 #include "services/runtimeService.hpp"
  76 #include "trace/tracing.hpp"
  77 #include "utilities/defaultStream.hpp"
  78 #include "utilities/dtrace.hpp"
  79 #include "utilities/events.hpp"
  80 #include "utilities/histogram.hpp"
  81 #ifdef TARGET_OS_FAMILY_linux
  82 # include "os_linux.inline.hpp"
  83 #endif
  84 #ifdef TARGET_OS_FAMILY_solaris
  85 # include "os_solaris.inline.hpp"
  86 #endif
  87 #ifdef TARGET_OS_FAMILY_windows
  88 # include "os_windows.inline.hpp"
  89 #endif
  90 #ifdef TARGET_OS_FAMILY_bsd
  91 # include "os_bsd.inline.hpp"
  92 #endif
  93 
  94 static jint CurrentVersion = JNI_VERSION_1_8;
  95 
  96 
  97 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
  98 // '-return' probe regardless of the return path is taken out of the function.
  99 // Methods that have multiple return paths use this to avoid having to
 100 // instrument each return path.  Methods that use CHECK or THROW must use this
 101 // since those macros can cause an immedate uninstrumented return.
 102 //
 103 // In order to get the return value, a reference to the variable containing
 104 // the return value must be passed to the contructor of the object, and
 105 // the return value must be set before return (since the mark object has
 106 // a reference to it).
 107 //
 108 // Example:
 109 // DT_RETURN_MARK_DECL(SomeFunc, int);
 110 // JNI_ENTRY(int, SomeFunc, ...)
 111 //   int return_value = 0;
 112 //   DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
 113 //   foo(CHECK_0)
 114 //   return_value = 5;
 115 //   return return_value;
 116 // JNI_END
 117 #define DT_RETURN_MARK_DECL(name, type, probe)                             \
 118   DTRACE_ONLY(                                                             \
 119     class DTraceReturnProbeMark_##name {                                   \
 120      public:                                                               \
 121       const type& _ret_ref;                                                \
 122       DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {}         \
 123       ~DTraceReturnProbeMark_##name() {                                    \
 124         probe;                                                             \
 125       }                                                                    \
 126     }                                                                      \
 127   )
 128 // Void functions are simpler since there's no return value
 129 #define DT_VOID_RETURN_MARK_DECL(name, probe)                              \
 130   DTRACE_ONLY(                                                             \
 131     class DTraceReturnProbeMark_##name {                                   \
 132      public:                                                               \
 133       ~DTraceReturnProbeMark_##name() {                                    \
 134         probe;                                                             \
 135       }                                                                    \
 136     }                                                                      \
 137   )
 138 
 139 // Place these macros in the function to mark the return.  Non-void
 140 // functions need the type and address of the return value.
 141 #define DT_RETURN_MARK(name, type, ref) \
 142   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
 143 #define DT_VOID_RETURN_MARK(name) \
 144   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
 145 
 146 
 147 // Use these to select distinct code for floating-point vs. non-floating point
 148 // situations.  Used from within common macros where we need slightly
 149 // different behavior for Float/Double
 150 #define FP_SELECT_Boolean(intcode, fpcode) intcode
 151 #define FP_SELECT_Byte(intcode, fpcode)    intcode
 152 #define FP_SELECT_Char(intcode, fpcode)    intcode
 153 #define FP_SELECT_Short(intcode, fpcode)   intcode
 154 #define FP_SELECT_Object(intcode, fpcode)  intcode
 155 #define FP_SELECT_Int(intcode, fpcode)     intcode
 156 #define FP_SELECT_Long(intcode, fpcode)    intcode
 157 #define FP_SELECT_Float(intcode, fpcode)   fpcode
 158 #define FP_SELECT_Double(intcode, fpcode)  fpcode
 159 #define FP_SELECT(TypeName, intcode, fpcode) \
 160   FP_SELECT_##TypeName(intcode, fpcode)
 161 
 162 #define COMMA ,
 163 
 164 // Choose DT_RETURN_MARK macros  based on the type: float/double -> void
 165 // (dtrace doesn't do FP yet)
 166 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe)    \
 167   FP_SELECT(TypeName, \
 168     DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
 169 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
 170   FP_SELECT(TypeName, \
 171     DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
 172 
 173 
 174 // out-of-line helpers for class jfieldIDWorkaround:
 175 
 176 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
 177   if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
 178     uintptr_t as_uint = (uintptr_t) id;
 179     intptr_t offset = raw_instance_offset(id);
 180     if (is_checked_jfieldID(id)) {
 181       if (!klass_hash_ok(k, id)) {
 182         return false;
 183       }
 184     }
 185     return InstanceKlass::cast(k)->contains_field_offset(offset);
 186   } else {
 187     JNIid* result = (JNIid*) id;
 188 #ifdef ASSERT
 189     return result != NULL && result->is_static_field_id();
 190 #else
 191     return result != NULL;
 192 #endif
 193   }
 194 }
 195 
 196 
 197 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
 198   if (offset <= small_offset_mask) {
 199     Klass* field_klass = k;
 200     Klass* super_klass = field_klass->super();
 201     // With compressed oops the most super class with nonstatic fields would
 202     // be the owner of fields embedded in the header.
 203     while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
 204            InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
 205       field_klass = super_klass;   // super contains the field also
 206       super_klass = field_klass->super();
 207     }
 208     debug_only(No_Safepoint_Verifier nosafepoint;)
 209     uintptr_t klass_hash = field_klass->identity_hash();
 210     return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
 211   } else {
 212 #if 0
 213     #ifndef PRODUCT
 214     {
 215       ResourceMark rm;
 216       warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
 217     }
 218     #endif
 219 #endif
 220     return 0;
 221   }
 222 }
 223 
 224 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
 225   uintptr_t as_uint = (uintptr_t) id;
 226   intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
 227   do {
 228     debug_only(No_Safepoint_Verifier nosafepoint;)
 229     // Could use a non-blocking query for identity_hash here...
 230     if ((k->identity_hash() & klass_mask) == klass_hash)
 231       return true;
 232     k = k->super();
 233   } while (k != NULL);
 234   return false;
 235 }
 236 
 237 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
 238   guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
 239   uintptr_t as_uint = (uintptr_t) id;
 240   intptr_t offset = raw_instance_offset(id);
 241   if (VerifyJNIFields) {
 242     if (is_checked_jfieldID(id)) {
 243       guarantee(klass_hash_ok(k, id),
 244     "Bug in native code: jfieldID class must match object");
 245     } else {
 246 #if 0
 247       #ifndef PRODUCT
 248       if (Verbose) {
 249   ResourceMark rm;
 250   warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
 251       }
 252       #endif
 253 #endif
 254     }
 255   }
 256   guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
 257       "Bug in native code: jfieldID offset must address interior of object");
 258 }
 259 
 260 // Pick a reasonable higher bound for local capacity requested
 261 // for EnsureLocalCapacity and PushLocalFrame.  We don't want it too
 262 // high because a test (or very unusual application) may try to allocate
 263 // that many handles and run out of swap space.  An implementation is
 264 // permitted to allocate more handles than the ensured capacity, so this
 265 // value is set high enough to prevent compatibility problems.
 266 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
 267 
 268 
 269 // Wrapper to trace JNI functions
 270 
 271 #ifdef ASSERT
 272   Histogram* JNIHistogram;
 273   static volatile jint JNIHistogram_lock = 0;
 274 
 275   class JNITraceWrapper : public StackObj {
 276    public:
 277     JNITraceWrapper(const char* format, ...) {
 278       if (TraceJNICalls) {
 279         va_list ap;
 280         va_start(ap, format);
 281         tty->print("JNI ");
 282         tty->vprint_cr(format, ap);
 283         va_end(ap);
 284       }
 285     }
 286   };
 287 
 288   class JNIHistogramElement : public HistogramElement {
 289     public:
 290      JNIHistogramElement(const char* name);
 291   };
 292 
 293   JNIHistogramElement::JNIHistogramElement(const char* elementName) {
 294     _name = elementName;
 295     uintx count = 0;
 296 
 297     while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
 298       while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
 299         count +=1;
 300         if ( (WarnOnStalledSpinLock > 0)
 301           && (count % WarnOnStalledSpinLock == 0)) {
 302           warning("JNIHistogram_lock seems to be stalled");
 303         }
 304       }
 305      }
 306 
 307 
 308     if(JNIHistogram == NULL)
 309       JNIHistogram = new Histogram("JNI Call Counts",100);
 310 
 311     JNIHistogram->add_element(this);
 312     Atomic::dec(&JNIHistogram_lock);
 313   }
 314 
 315   #define JNICountWrapper(arg)                                     \
 316      static JNIHistogramElement* e = new JNIHistogramElement(arg); \
 317       /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
 318      if (e != NULL) e->increment_count()
 319   #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
 320 #else
 321   #define JNIWrapper(arg)
 322 #endif
 323 
 324 
 325 // Implementation of JNI entries
 326 
 327 DT_RETURN_MARK_DECL(DefineClass, jclass
 328                     , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
 329 
 330 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
 331                                   const jbyte *buf, jsize bufLen))
 332   JNIWrapper("DefineClass");
 333 
 334   HOTSPOT_JNI_DEFINECLASS_ENTRY(
 335     env, (char*) name, loaderRef, (char*) buf, bufLen);
 336 
 337   jclass cls = NULL;
 338   DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
 339 
 340   TempNewSymbol class_name = NULL;
 341   // Since exceptions can be thrown, class initialization can take place
 342   // if name is NULL no check for class name in .class stream has to be made.
 343   if (name != NULL) {
 344     const int str_len = (int)strlen(name);
 345     if (str_len > Symbol::max_length()) {
 346       // It's impossible to create this class;  the name cannot fit
 347       // into the constant pool.
 348       THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
 349     }
 350     class_name = SymbolTable::new_symbol(name, CHECK_NULL);
 351   }
 352   ResourceMark rm(THREAD);
 353   ClassFileStream st((u1*) buf, bufLen, NULL);
 354   Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
 355 
 356   if (UsePerfData && !class_loader.is_null()) {
 357     // check whether the current caller thread holds the lock or not.
 358     // If not, increment the corresponding counter
 359     if (ObjectSynchronizer::
 360         query_lock_ownership((JavaThread*)THREAD, class_loader) !=
 361         ObjectSynchronizer::owner_self) {
 362       ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
 363     }
 364   }
 365   Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
 366                                                      Handle(), &st, true,
 367                                                      CHECK_NULL);
 368 
 369   if (TraceClassResolution && k != NULL) {
 370     trace_class_resolution(k);
 371   }
 372 
 373   cls = (jclass)JNIHandles::make_local(
 374     env, k->java_mirror());
 375   return cls;
 376 JNI_END
 377 
 378 
 379 
 380 static bool first_time_FindClass = true;
 381 
 382 DT_RETURN_MARK_DECL(FindClass, jclass
 383                     , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
 384 
 385 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
 386   JNIWrapper("FindClass");
 387 
 388   HOTSPOT_JNI_FINDCLASS_ENTRY(env, (char *)name);
 389 
 390   jclass result = NULL;
 391   DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
 392 
 393   // Remember if we are the first invocation of jni_FindClass
 394   bool first_time = first_time_FindClass;
 395   first_time_FindClass = false;
 396 
 397   // Sanity check the name:  it cannot be null or larger than the maximum size
 398   // name we can fit in the constant pool.
 399   if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
 400     THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
 401   }
 402 
 403   //%note jni_3
 404   Handle loader;
 405   Handle protection_domain;
 406   // Find calling class
 407   instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
 408   if (k.not_null()) {
 409     loader = Handle(THREAD, k->class_loader());
 410     // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
 411     // in the correct class context.
 412     if (loader.is_null() &&
 413         k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
 414       JavaValue result(T_OBJECT);
 415       JavaCalls::call_static(&result, k,
 416                                       vmSymbols::getFromClass_name(),
 417                                       vmSymbols::void_class_signature(),
 418                                       thread);
 419       if (HAS_PENDING_EXCEPTION) {
 420         Handle ex(thread, thread->pending_exception());
 421         CLEAR_PENDING_EXCEPTION;
 422         THROW_HANDLE_0(ex);
 423       }
 424       oop mirror = (oop) result.get_jobject();
 425       loader = Handle(THREAD,
 426         InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
 427       protection_domain = Handle(THREAD,
 428         InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
 429     }
 430   } else {
 431     // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
 432     loader = Handle(THREAD, SystemDictionary::java_system_loader());
 433   }
 434 
 435   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
 436   result = find_class_from_class_loader(env, sym, true, loader,
 437                                         protection_domain, true, thread);
 438 
 439   if (TraceClassResolution && result != NULL) {
 440     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
 441   }
 442 
 443   // If we were the first invocation of jni_FindClass, we enable compilation again
 444   // rather than just allowing invocation counter to overflow and decay.
 445   // Controlled by flag DelayCompilationDuringStartup.
 446   if (first_time && !CompileTheWorld)
 447     CompilationPolicy::completed_vm_startup();
 448 
 449   return result;
 450 JNI_END
 451 
 452 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
 453                     , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
 454 
 455 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
 456   JNIWrapper("FromReflectedMethod");
 457 
 458   HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(env, method);
 459 
 460   jmethodID ret = NULL;
 461   DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
 462 
 463   // method is a handle to a java.lang.reflect.Method object
 464   oop reflected  = JNIHandles::resolve_non_null(method);
 465   oop mirror     = NULL;
 466   int slot       = 0;
 467 
 468   if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
 469     mirror = java_lang_reflect_Constructor::clazz(reflected);
 470     slot   = java_lang_reflect_Constructor::slot(reflected);
 471   } else {
 472     assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
 473     mirror = java_lang_reflect_Method::clazz(reflected);
 474     slot   = java_lang_reflect_Method::slot(reflected);
 475   }
 476   Klass* k     = java_lang_Class::as_Klass(mirror);
 477 
 478   KlassHandle k1(THREAD, k);
 479   // Make sure class is initialized before handing id's out to methods
 480   k1()->initialize(CHECK_NULL);
 481   Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
 482   ret = m==NULL? NULL : m->jmethod_id();  // return NULL if reflected method deleted
 483   return ret;
 484 JNI_END
 485 
 486 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
 487                     , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
 488 
 489 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
 490   JNIWrapper("FromReflectedField");
 491 
 492   HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(env, field);
 493 
 494   jfieldID ret = NULL;
 495   DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
 496 
 497   // field is a handle to a java.lang.reflect.Field object
 498   oop reflected   = JNIHandles::resolve_non_null(field);
 499   oop mirror      = java_lang_reflect_Field::clazz(reflected);
 500   Klass* k      = java_lang_Class::as_Klass(mirror);
 501   int slot        = java_lang_reflect_Field::slot(reflected);
 502   int modifiers   = java_lang_reflect_Field::modifiers(reflected);
 503 
 504   KlassHandle k1(THREAD, k);
 505   // Make sure class is initialized before handing id's out to fields
 506   k1()->initialize(CHECK_NULL);
 507 
 508   // First check if this is a static field
 509   if (modifiers & JVM_ACC_STATIC) {
 510     intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
 511     JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
 512     assert(id != NULL, "corrupt Field object");
 513     debug_only(id->set_is_static_field_id();)
 514     // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
 515     ret = jfieldIDWorkaround::to_static_jfieldID(id);
 516     return ret;
 517   }
 518 
 519   // The slot is the index of the field description in the field-array
 520   // The jfieldID is the offset of the field within the object
 521   // It may also have hash bits for k, if VerifyJNIFields is turned on.
 522   intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
 523   assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
 524   ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
 525   return ret;
 526 JNI_END
 527 
 528 
 529 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
 530                     , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
 531 
 532 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
 533   JNIWrapper("ToReflectedMethod");
 534 
 535   HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(env, cls, (uintptr_t) method_id, isStatic);
 536 
 537   jobject ret = NULL;
 538   DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
 539 
 540   methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
 541   assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
 542   oop reflection_method;
 543   if (m->is_initializer()) {
 544     reflection_method = Reflection::new_constructor(m, CHECK_NULL);
 545   } else {
 546     reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
 547   }
 548   ret = JNIHandles::make_local(env, reflection_method);
 549   return ret;
 550 JNI_END
 551 
 552 DT_RETURN_MARK_DECL(GetSuperclass, jclass
 553                     , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
 554 
 555 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
 556   JNIWrapper("GetSuperclass");
 557 
 558   HOTSPOT_JNI_GETSUPERCLASS_ENTRY(env, sub);
 559 
 560   jclass obj = NULL;
 561   DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
 562 
 563   oop mirror = JNIHandles::resolve_non_null(sub);
 564   // primitive classes return NULL
 565   if (java_lang_Class::is_primitive(mirror)) return NULL;
 566 
 567   // Rules of Class.getSuperClass as implemented by KLass::java_super:
 568   // arrays return Object
 569   // interfaces return NULL
 570   // proper classes return Klass::super()
 571   Klass* k = java_lang_Class::as_Klass(mirror);
 572   if (k->is_interface()) return NULL;
 573 
 574   // return mirror for superclass
 575   Klass* super = k->java_super();
 576   // super2 is the value computed by the compiler's getSuperClass intrinsic:
 577   debug_only(Klass* super2 = ( k->oop_is_array()
 578                                  ? SystemDictionary::Object_klass()
 579                                  : k->super() ) );
 580   assert(super == super2,
 581          "java_super computation depends on interface, array, other super");
 582   obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());
 583   return obj;
 584 JNI_END
 585 
 586 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
 587   JNIWrapper("IsSubclassOf");
 588 
 589   HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(env, sub, super);
 590 
 591   oop sub_mirror   = JNIHandles::resolve_non_null(sub);
 592   oop super_mirror = JNIHandles::resolve_non_null(super);
 593   if (java_lang_Class::is_primitive(sub_mirror) ||
 594       java_lang_Class::is_primitive(super_mirror)) {
 595     jboolean ret = (sub_mirror == super_mirror);
 596 
 597     HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret);
 598     return ret;
 599   }
 600   Klass* sub_klass   = java_lang_Class::as_Klass(sub_mirror);
 601   Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
 602   assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
 603   jboolean ret = sub_klass->is_subtype_of(super_klass) ?
 604                    JNI_TRUE : JNI_FALSE;
 605 
 606   HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret);
 607   return ret;
 608 JNI_END
 609 
 610 
 611 DT_RETURN_MARK_DECL(Throw, jint
 612                     , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
 613 
 614 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
 615   JNIWrapper("Throw");
 616 
 617   HOTSPOT_JNI_THROW_ENTRY(env, obj);
 618 
 619   jint ret = JNI_OK;
 620   DT_RETURN_MARK(Throw, jint, (const jint&)ret);
 621 
 622   THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
 623   ShouldNotReachHere();
 624 JNI_END
 625 
 626 
 627 DT_RETURN_MARK_DECL(ThrowNew, jint
 628                     , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
 629 
 630 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
 631   JNIWrapper("ThrowNew");
 632 
 633   HOTSPOT_JNI_THROWNEW_ENTRY(env, clazz, (char *) message);
 634 
 635   jint ret = JNI_OK;
 636   DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
 637 
 638   InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
 639   Symbol*  name = k->name();
 640   Handle class_loader (THREAD,  k->class_loader());
 641   Handle protection_domain (THREAD, k->protection_domain());
 642   THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
 643   ShouldNotReachHere();
 644 JNI_END
 645 
 646 
 647 // JNI functions only transform a pending async exception to a synchronous
 648 // exception in ExceptionOccurred and ExceptionCheck calls, since
 649 // delivering an async exception in other places won't change the native
 650 // code's control flow and would be harmful when native code further calls
 651 // JNI functions with a pending exception. Async exception is also checked
 652 // during the call, so ExceptionOccurred/ExceptionCheck won't return
 653 // false but deliver the async exception at the very end during
 654 // state transition.
 655 
 656 static void jni_check_async_exceptions(JavaThread *thread) {
 657   assert(thread == Thread::current(), "must be itself");
 658   thread->check_and_handle_async_exceptions();
 659 }
 660 
 661 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
 662   JNIWrapper("ExceptionOccurred");
 663 
 664   HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(env);
 665 
 666   jni_check_async_exceptions(thread);
 667   oop exception = thread->pending_exception();
 668   jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
 669 
 670   HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(ret);
 671   return ret;
 672 JNI_END
 673 
 674 
 675 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
 676   JNIWrapper("ExceptionDescribe");
 677 
 678   HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(env);
 679 
 680   if (thread->has_pending_exception()) {
 681     Handle ex(thread, thread->pending_exception());
 682     thread->clear_pending_exception();
 683     if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
 684       // Don't print anything if we are being killed.
 685     } else {
 686       jio_fprintf(defaultStream::error_stream(), "Exception ");
 687       if (thread != NULL && thread->threadObj() != NULL) {
 688         ResourceMark rm(THREAD);
 689         jio_fprintf(defaultStream::error_stream(),
 690         "in thread \"%s\" ", thread->get_thread_name());
 691       }
 692       if (ex->is_a(SystemDictionary::Throwable_klass())) {
 693         JavaValue result(T_VOID);
 694         JavaCalls::call_virtual(&result,
 695                                 ex,
 696                                 KlassHandle(THREAD,
 697                                   SystemDictionary::Throwable_klass()),
 698                                 vmSymbols::printStackTrace_name(),
 699                                 vmSymbols::void_method_signature(),
 700                                 THREAD);
 701         // If an exception is thrown in the call it gets thrown away. Not much
 702         // we can do with it. The native code that calls this, does not check
 703         // for the exception - hence, it might still be in the thread when DestroyVM gets
 704         // called, potentially causing a few asserts to trigger - since no pending exception
 705         // is expected.
 706         CLEAR_PENDING_EXCEPTION;
 707       } else {
 708         ResourceMark rm(THREAD);
 709         jio_fprintf(defaultStream::error_stream(),
 710         ". Uncaught exception of type %s.",
 711         ex->klass()->external_name());
 712       }
 713     }
 714   }
 715 
 716   HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN();
 717 JNI_END
 718 
 719 
 720 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
 721   JNIWrapper("ExceptionClear");
 722 
 723   HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(env);
 724 
 725   // The jni code might be using this API to clear java thrown exception.
 726   // So just mark jvmti thread exception state as exception caught.
 727   JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
 728   if (state != NULL && state->is_exception_detected()) {
 729     state->set_exception_caught();
 730   }
 731   thread->clear_pending_exception();
 732 
 733   HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN();
 734 JNI_END
 735 
 736 
 737 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
 738   JNIWrapper("FatalError");
 739 
 740   HOTSPOT_JNI_FATALERROR_ENTRY(env, (char *) msg);
 741 
 742   tty->print_cr("FATAL ERROR in native method: %s", msg);
 743   thread->print_stack();
 744   os::abort(); // Dump core and abort
 745 JNI_END
 746 
 747 
 748 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
 749   JNIWrapper("PushLocalFrame");
 750 
 751   HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(env, capacity);
 752 
 753   //%note jni_11
 754   if (capacity < 0 || capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
 755     HOTSPOT_JNI_PUSHLOCALFRAME_RETURN((uint32_t)JNI_ERR);
 756     return JNI_ERR;
 757   }
 758   JNIHandleBlock* old_handles = thread->active_handles();
 759   JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
 760   assert(new_handles != NULL, "should not be NULL");
 761   new_handles->set_pop_frame_link(old_handles);
 762   thread->set_active_handles(new_handles);
 763   jint ret = JNI_OK;
 764   HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(ret);
 765   return ret;
 766 JNI_END
 767 
 768 
 769 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
 770   JNIWrapper("PopLocalFrame");
 771 
 772   HOTSPOT_JNI_POPLOCALFRAME_ENTRY(env, result);
 773 
 774   //%note jni_11
 775   Handle result_handle(thread, JNIHandles::resolve(result));
 776   JNIHandleBlock* old_handles = thread->active_handles();
 777   JNIHandleBlock* new_handles = old_handles->pop_frame_link();
 778   if (new_handles != NULL) {
 779     // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
 780     // This way code will still work if PopLocalFrame is called without a corresponding
 781     // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
 782     // the release_block call will release the blocks.
 783     thread->set_active_handles(new_handles);
 784     old_handles->set_pop_frame_link(NULL);              // clear link we won't release new_handles below
 785     JNIHandleBlock::release_block(old_handles, thread); // may block
 786     result = JNIHandles::make_local(thread, result_handle());
 787   }
 788   HOTSPOT_JNI_POPLOCALFRAME_RETURN(result);
 789   return result;
 790 JNI_END
 791 
 792 
 793 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
 794   JNIWrapper("NewGlobalRef");
 795 
 796   HOTSPOT_JNI_NEWGLOBALREF_ENTRY(env, ref);
 797 
 798   Handle ref_handle(thread, JNIHandles::resolve(ref));
 799   jobject ret = JNIHandles::make_global(ref_handle);
 800 
 801   HOTSPOT_JNI_NEWGLOBALREF_RETURN(ret);
 802   return ret;
 803 JNI_END
 804 
 805 // Must be JNI_ENTRY (with HandleMark)
 806 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
 807   JNIWrapper("DeleteGlobalRef");
 808 
 809   HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(env, ref);
 810 
 811   JNIHandles::destroy_global(ref);
 812 
 813   HOTSPOT_JNI_DELETEGLOBALREF_RETURN();
 814 JNI_END
 815 
 816 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
 817   JNIWrapper("DeleteLocalRef");
 818 
 819   HOTSPOT_JNI_DELETELOCALREF_ENTRY(env, obj);
 820 
 821   JNIHandles::destroy_local(obj);
 822 
 823   HOTSPOT_JNI_DELETELOCALREF_RETURN();
 824 JNI_END
 825 
 826 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
 827   JNIWrapper("IsSameObject");
 828 
 829   HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(env, r1, r2);
 830 
 831   oop a = JNIHandles::resolve(r1);
 832   oop b = JNIHandles::resolve(r2);
 833   jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
 834 
 835   HOTSPOT_JNI_ISSAMEOBJECT_RETURN(ret);
 836   return ret;
 837 JNI_END
 838 
 839 
 840 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
 841   JNIWrapper("NewLocalRef");
 842 
 843   HOTSPOT_JNI_NEWLOCALREF_ENTRY(env, ref);
 844 
 845   jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
 846 
 847   HOTSPOT_JNI_NEWLOCALREF_RETURN(ret);
 848   return ret;
 849 JNI_END
 850 
 851 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
 852   JNIWrapper("EnsureLocalCapacity");
 853 
 854   HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(env, capacity);
 855 
 856   jint ret;
 857   if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
 858     ret = JNI_OK;
 859   } else {
 860     ret = JNI_ERR;
 861   }
 862 
 863   HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(ret);
 864   return ret;
 865 JNI_END
 866 
 867 // Return the Handle Type
 868 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
 869   JNIWrapper("GetObjectRefType");
 870 
 871   HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(env, obj);
 872 
 873   jobjectRefType ret;
 874   if (JNIHandles::is_local_handle(thread, obj) ||
 875       JNIHandles::is_frame_handle(thread, obj))
 876     ret = JNILocalRefType;
 877   else if (JNIHandles::is_global_handle(obj))
 878     ret = JNIGlobalRefType;
 879   else if (JNIHandles::is_weak_global_handle(obj))
 880     ret = JNIWeakGlobalRefType;
 881   else
 882     ret = JNIInvalidRefType;
 883 
 884   HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN((void *) ret);
 885   return ret;
 886 JNI_END
 887 
 888 
 889 class JNI_ArgumentPusher : public SignatureIterator {
 890  protected:
 891   JavaCallArguments*  _arguments;
 892 
 893   virtual void get_bool   () = 0;
 894   virtual void get_char   () = 0;
 895   virtual void get_short  () = 0;
 896   virtual void get_byte   () = 0;
 897   virtual void get_int    () = 0;
 898   virtual void get_long   () = 0;
 899   virtual void get_float  () = 0;
 900   virtual void get_double () = 0;
 901   virtual void get_object () = 0;
 902 
 903   JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
 904     this->_return_type = T_ILLEGAL;
 905     _arguments = NULL;
 906   }
 907 
 908  public:
 909   virtual void iterate( uint64_t fingerprint ) = 0;
 910 
 911   void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
 912 
 913   inline void do_bool()                     { if (!is_return_type()) get_bool();   }
 914   inline void do_char()                     { if (!is_return_type()) get_char();   }
 915   inline void do_short()                    { if (!is_return_type()) get_short();  }
 916   inline void do_byte()                     { if (!is_return_type()) get_byte();   }
 917   inline void do_int()                      { if (!is_return_type()) get_int();    }
 918   inline void do_long()                     { if (!is_return_type()) get_long();   }
 919   inline void do_float()                    { if (!is_return_type()) get_float();  }
 920   inline void do_double()                   { if (!is_return_type()) get_double(); }
 921   inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
 922   inline void do_array(int begin, int end)  { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
 923   inline void do_void()                     { }
 924 
 925   JavaCallArguments* arguments()     { return _arguments; }
 926   void push_receiver(Handle h)       { _arguments->push_oop(h); }
 927 };
 928 
 929 
 930 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
 931  protected:
 932   va_list _ap;
 933 
 934   inline void get_bool()   { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
 935   inline void get_char()   { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
 936   inline void get_short()  { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
 937   inline void get_byte()   { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
 938   inline void get_int()    { _arguments->push_int(va_arg(_ap, jint)); }
 939 
 940   // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
 941 
 942   inline void get_long()   { _arguments->push_long(va_arg(_ap, jlong)); }
 943   inline void get_float()  { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
 944   inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
 945   inline void get_object() { jobject l = va_arg(_ap, jobject);
 946                              _arguments->push_oop(Handle((oop *)l, false)); }
 947 
 948   inline void set_ap(va_list rap) {
 949 #ifdef va_copy
 950     va_copy(_ap, rap);
 951 #elif defined (__va_copy)
 952     __va_copy(_ap, rap);
 953 #else
 954     _ap = rap;
 955 #endif
 956   }
 957 
 958  public:
 959   JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
 960        : JNI_ArgumentPusher(signature) {
 961     set_ap(rap);
 962   }
 963   JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
 964       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
 965     set_ap(rap);
 966   }
 967 
 968   // Optimized path if we have the bitvector form of signature
 969   void iterate( uint64_t fingerprint ) {
 970     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
 971     else {
 972       _return_type = (BasicType)((fingerprint >> static_feature_size) &
 973                                   result_feature_mask);
 974 
 975       assert(fingerprint, "Fingerprint should not be 0");
 976       fingerprint = fingerprint >> (static_feature_size + result_feature_size);
 977       while ( 1 ) {
 978         switch ( fingerprint & parameter_feature_mask ) {
 979           case bool_parm:
 980           case char_parm:
 981           case short_parm:
 982           case byte_parm:
 983           case int_parm:
 984             get_int();
 985             break;
 986           case obj_parm:
 987             get_object();
 988             break;
 989           case long_parm:
 990             get_long();
 991             break;
 992           case float_parm:
 993             get_float();
 994             break;
 995           case double_parm:
 996             get_double();
 997             break;
 998           case done_parm:
 999             return;
1000             break;
1001           default:
1002             ShouldNotReachHere();
1003             break;
1004         }
1005         fingerprint >>= parameter_feature_size;
1006       }
1007     }
1008   }
1009 };
1010 
1011 
1012 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1013  protected:
1014   const jvalue *_ap;
1015 
1016   inline void get_bool()   { _arguments->push_int((jint)(_ap++)->z); }
1017   inline void get_char()   { _arguments->push_int((jint)(_ap++)->c); }
1018   inline void get_short()  { _arguments->push_int((jint)(_ap++)->s); }
1019   inline void get_byte()   { _arguments->push_int((jint)(_ap++)->b); }
1020   inline void get_int()    { _arguments->push_int((jint)(_ap++)->i); }
1021 
1022   inline void get_long()   { _arguments->push_long((_ap++)->j);  }
1023   inline void get_float()  { _arguments->push_float((_ap++)->f); }
1024   inline void get_double() { _arguments->push_double((_ap++)->d);}
1025   inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1026 
1027   inline void set_ap(const jvalue *rap) { _ap = rap; }
1028 
1029  public:
1030   JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1031        : JNI_ArgumentPusher(signature) {
1032     set_ap(rap);
1033   }
1034   JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1035       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1036     set_ap(rap);
1037   }
1038 
1039   // Optimized path if we have the bitvector form of signature
1040   void iterate( uint64_t fingerprint ) {
1041     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1042     else {
1043       _return_type = (BasicType)((fingerprint >> static_feature_size) &
1044                                   result_feature_mask);
1045       assert(fingerprint, "Fingerprint should not be 0");
1046       fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1047       while ( 1 ) {
1048         switch ( fingerprint & parameter_feature_mask ) {
1049           case bool_parm:
1050             get_bool();
1051             break;
1052           case char_parm:
1053             get_char();
1054             break;
1055           case short_parm:
1056             get_short();
1057             break;
1058           case byte_parm:
1059             get_byte();
1060             break;
1061           case int_parm:
1062             get_int();
1063             break;
1064           case obj_parm:
1065             get_object();
1066             break;
1067           case long_parm:
1068             get_long();
1069             break;
1070           case float_parm:
1071             get_float();
1072             break;
1073           case double_parm:
1074             get_double();
1075             break;
1076           case done_parm:
1077             return;
1078             break;
1079           default:
1080             ShouldNotReachHere();
1081             break;
1082         }
1083         fingerprint >>= parameter_feature_size;
1084       }
1085     }
1086   }
1087 };
1088 
1089 
1090 enum JNICallType {
1091   JNI_STATIC,
1092   JNI_VIRTUAL,
1093   JNI_NONVIRTUAL
1094 };
1095 
1096 
1097 
1098 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1099   methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1100 
1101   // Create object to hold arguments for the JavaCall, and associate it with
1102   // the jni parser
1103   ResourceMark rm(THREAD);
1104   int number_of_parameters = method->size_of_parameters();
1105   JavaCallArguments java_args(number_of_parameters);
1106   args->set_java_argument_object(&java_args);
1107 
1108   assert(method->is_static(), "method should be static");
1109 
1110   // Fill out JavaCallArguments object
1111   args->iterate( Fingerprinter(method).fingerprint() );
1112   // Initialize result type
1113   result->set_type(args->get_ret_type());
1114 
1115   // Invoke the method. Result is returned as oop.
1116   JavaCalls::call(result, method, &java_args, CHECK);
1117 
1118   // Convert result
1119   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1120     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1121   }
1122 }
1123 
1124 
1125 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1126   oop recv = JNIHandles::resolve(receiver);
1127   if (recv == NULL) {
1128     THROW(vmSymbols::java_lang_NullPointerException());
1129   }
1130   Handle h_recv(THREAD, recv);
1131 
1132   int number_of_parameters;
1133   Method* selected_method;
1134   {
1135     Method* m = Method::resolve_jmethod_id(method_id);
1136     number_of_parameters = m->size_of_parameters();
1137     Klass* holder = m->method_holder();
1138     if (!(holder)->is_interface()) {
1139       // non-interface call -- for that little speed boost, don't handlize
1140       debug_only(No_Safepoint_Verifier nosafepoint;)
1141       if (call_type == JNI_VIRTUAL) {
1142         // jni_GetMethodID makes sure class is linked and initialized
1143         // so m should have a valid vtable index.
1144         assert(!m->has_itable_index(), "");
1145         int vtbl_index = m->vtable_index();
1146         if (vtbl_index != Method::nonvirtual_vtable_index) {
1147           Klass* k = h_recv->klass();
1148           // k might be an arrayKlassOop but all vtables start at
1149           // the same place. The cast is to avoid virtual call and assertion.
1150           InstanceKlass *ik = (InstanceKlass*)k;
1151           selected_method = ik->method_at_vtable(vtbl_index);
1152         } else {
1153           // final method
1154           selected_method = m;
1155         }
1156       } else {
1157         // JNI_NONVIRTUAL call
1158         selected_method = m;
1159       }
1160     } else {
1161       // interface call
1162       KlassHandle h_holder(THREAD, holder);
1163 
1164       if (call_type == JNI_VIRTUAL) {
1165         int itbl_index = m->itable_index();
1166         Klass* k = h_recv->klass();
1167         selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1168       } else {
1169         selected_method = m;
1170       }
1171     }
1172   }
1173 
1174   methodHandle method(THREAD, selected_method);
1175 
1176   // Create object to hold arguments for the JavaCall, and associate it with
1177   // the jni parser
1178   ResourceMark rm(THREAD);
1179   JavaCallArguments java_args(number_of_parameters);
1180   args->set_java_argument_object(&java_args);
1181 
1182   // handle arguments
1183   assert(!method->is_static(), "method should not be static");
1184   args->push_receiver(h_recv); // Push jobject handle
1185 
1186   // Fill out JavaCallArguments object
1187   args->iterate( Fingerprinter(method).fingerprint() );
1188   // Initialize result type
1189   result->set_type(args->get_ret_type());
1190 
1191   // Invoke the method. Result is returned as oop.
1192   JavaCalls::call(result, method, &java_args, CHECK);
1193 
1194   // Convert result
1195   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1196     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1197   }
1198 }
1199 
1200 
1201 static instanceOop alloc_object(jclass clazz, TRAPS) {
1202   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1203   if (k == NULL) {
1204     ResourceMark rm(THREAD);
1205     THROW_(vmSymbols::java_lang_InstantiationException(), NULL);
1206   }
1207   k()->check_valid_for_instantiation(false, CHECK_NULL);
1208   InstanceKlass::cast(k())->initialize(CHECK_NULL);
1209   instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1210   return ih;
1211 }
1212 
1213 DT_RETURN_MARK_DECL(AllocObject, jobject
1214                     , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1215 
1216 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1217   JNIWrapper("AllocObject");
1218 
1219   HOTSPOT_JNI_ALLOCOBJECT_ENTRY(env, clazz);
1220 
1221   jobject ret = NULL;
1222   DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1223 
1224   instanceOop i = alloc_object(clazz, CHECK_NULL);
1225   ret = JNIHandles::make_local(env, i);
1226   return ret;
1227 JNI_END
1228 
1229 DT_RETURN_MARK_DECL(NewObjectA, jobject
1230                     , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1231 
1232 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1233   JNIWrapper("NewObjectA");
1234 
1235   HOTSPOT_JNI_NEWOBJECTA_ENTRY(env, clazz, (uintptr_t) methodID);
1236 
1237   jobject obj = NULL;
1238   DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1239 
1240   instanceOop i = alloc_object(clazz, CHECK_NULL);
1241   obj = JNIHandles::make_local(env, i);
1242   JavaValue jvalue(T_VOID);
1243   JNI_ArgumentPusherArray ap(methodID, args);
1244   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1245   return obj;
1246 JNI_END
1247 
1248 
1249 DT_RETURN_MARK_DECL(NewObjectV, jobject
1250                     , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1251 
1252 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1253   JNIWrapper("NewObjectV");
1254 
1255   HOTSPOT_JNI_NEWOBJECTV_ENTRY(env, clazz, (uintptr_t) methodID);
1256 
1257   jobject obj = NULL;
1258   DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1259 
1260   instanceOop i = alloc_object(clazz, CHECK_NULL);
1261   obj = JNIHandles::make_local(env, i);
1262   JavaValue jvalue(T_VOID);
1263   JNI_ArgumentPusherVaArg ap(methodID, args);
1264   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1265   return obj;
1266 JNI_END
1267 
1268 
1269 DT_RETURN_MARK_DECL(NewObject, jobject
1270                     , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1271 
1272 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1273   JNIWrapper("NewObject");
1274 
1275   HOTSPOT_JNI_NEWOBJECT_ENTRY(env, clazz, (uintptr_t) methodID);
1276 
1277   jobject obj = NULL;
1278   DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1279 
1280   instanceOop i = alloc_object(clazz, CHECK_NULL);
1281   obj = JNIHandles::make_local(env, i);
1282   va_list args;
1283   va_start(args, methodID);
1284   JavaValue jvalue(T_VOID);
1285   JNI_ArgumentPusherVaArg ap(methodID, args);
1286   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1287   va_end(args);
1288   return obj;
1289 JNI_END
1290 
1291 
1292 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1293   JNIWrapper("GetObjectClass");
1294 
1295   HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(env, obj);
1296 
1297   Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1298   jclass ret =
1299     (jclass) JNIHandles::make_local(env, k->java_mirror());
1300 
1301   HOTSPOT_JNI_GETOBJECTCLASS_RETURN(ret);
1302   return ret;
1303 JNI_END
1304 
1305 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1306   JNIWrapper("IsInstanceOf");
1307 
1308   HOTSPOT_JNI_ISINSTANCEOF_ENTRY(env, obj, clazz);
1309 
1310   jboolean ret = JNI_TRUE;
1311   if (obj != NULL) {
1312     ret = JNI_FALSE;
1313     Klass* k = java_lang_Class::as_Klass(
1314       JNIHandles::resolve_non_null(clazz));
1315     if (k != NULL) {
1316       ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1317     }
1318   }
1319 
1320   HOTSPOT_JNI_ISINSTANCEOF_RETURN(ret);
1321   return ret;
1322 JNI_END
1323 
1324 
1325 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1326                                const char *sig, bool is_static, TRAPS) {
1327   // %%%% This code should probably just call into a method in the LinkResolver
1328   //
1329   // The class should have been loaded (we have an instance of the class
1330   // passed in) so the method and signature should already be in the symbol
1331   // table.  If they're not there, the method doesn't exist.
1332   const char *name_to_probe = (name_str == NULL)
1333                         ? vmSymbols::object_initializer_name()->as_C_string()
1334                         : name_str;
1335   TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1336   TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1337 
1338   if (name == NULL || signature == NULL) {
1339     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1340   }
1341 
1342   // Throw a NoSuchMethodError exception if we have an instance of a
1343   // primitive java.lang.Class
1344   if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1345     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1346   }
1347 
1348   KlassHandle klass(THREAD,
1349                java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1350 
1351   // Make sure class is linked and initialized before handing id's out to
1352   // Method*s.
1353   klass()->initialize(CHECK_NULL);
1354 
1355   Method* m;
1356   if (name == vmSymbols::object_initializer_name() ||
1357       name == vmSymbols::class_initializer_name()) {
1358     // Never search superclasses for constructors
1359     if (klass->oop_is_instance()) {
1360       m = InstanceKlass::cast(klass())->find_method(name, signature);
1361     } else {
1362       m = NULL;
1363     }
1364   } else {
1365     m = klass->lookup_method(name, signature);
1366     if (m == NULL &&  klass->oop_is_instance()) {
1367       m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);
1368     }
1369   }
1370   if (m == NULL || (m->is_static() != is_static)) {
1371     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1372   }
1373   return m->jmethod_id();
1374 }
1375 
1376 
1377 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1378           const char *name, const char *sig))
1379   JNIWrapper("GetMethodID");
1380   HOTSPOT_JNI_GETMETHODID_ENTRY(env, clazz, (char *) name, (char *) sig);
1381   jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1382   HOTSPOT_JNI_GETMETHODID_RETURN((uintptr_t) ret);
1383   return ret;
1384 JNI_END
1385 
1386 
1387 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1388           const char *name, const char *sig))
1389   JNIWrapper("GetStaticMethodID");
1390   HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(env, (char *) clazz, (char *) name, (char *)sig);
1391   jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1392   HOTSPOT_JNI_GETSTATICMETHODID_RETURN((uintptr_t) ret);
1393   return ret;
1394 JNI_END
1395 
1396 
1397 
1398 //
1399 // Calling Methods
1400 //
1401 
1402 
1403 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1404                           , EntryProbe, ReturnProbe)    \
1405 \
1406   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1407                           , ReturnProbe);                          \
1408 \
1409 JNI_ENTRY(ResultType, \
1410           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1411   JNIWrapper("Call" XSTR(Result) "Method"); \
1412 \
1413   EntryProbe; \
1414   ResultType ret = 0;\
1415   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1416                      (const ResultType&)ret);\
1417 \
1418   va_list args; \
1419   va_start(args, methodID); \
1420   JavaValue jvalue(Tag); \
1421   JNI_ArgumentPusherVaArg ap(methodID, args); \
1422   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1423   va_end(args); \
1424   ret = jvalue.get_##ResultType(); \
1425   return ret;\
1426 JNI_END
1427 
1428 // the runtime type of subword integral basic types is integer
1429 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1430                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1431                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1432 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE
1433                   , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1434                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1435 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR
1436                   , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1437                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1438 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT
1439                   , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1440                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1441 
1442 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT
1443                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1444                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1445 DEFINE_CALLMETHOD(jint,     Int,     T_INT,
1446                   HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1447                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1448 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG
1449                   , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1450                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1451 // Float and double probes don't return value because dtrace doesn't currently support it
1452 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT
1453                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1454                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1455 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE
1456                   , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1457                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1458 
1459 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1460                           , EntryProbe, ReturnProbe)    \
1461 \
1462   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1463                           , ReturnProbe);                          \
1464 \
1465 JNI_ENTRY(ResultType, \
1466           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1467   JNIWrapper("Call" XSTR(Result) "MethodV"); \
1468 \
1469   EntryProbe;\
1470   ResultType ret = 0;\
1471   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1472                      (const ResultType&)ret);\
1473 \
1474   JavaValue jvalue(Tag); \
1475   JNI_ArgumentPusherVaArg ap(methodID, args); \
1476   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1477   ret = jvalue.get_##ResultType(); \
1478   return ret;\
1479 JNI_END
1480 
1481 // the runtime type of subword integral basic types is integer
1482 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1483                   , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1484                   HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref))
1485 DEFINE_CALLMETHODV(jbyte,    Byte,    T_BYTE
1486                   , HOTSPOT_JNI_CALLBYTEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1487                   HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref))
1488 DEFINE_CALLMETHODV(jchar,    Char,    T_CHAR
1489                   , HOTSPOT_JNI_CALLCHARMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1490                   HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref))
1491 DEFINE_CALLMETHODV(jshort,   Short,   T_SHORT
1492                   , HOTSPOT_JNI_CALLSHORTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1493                   HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref))
1494 
1495 DEFINE_CALLMETHODV(jobject,  Object,  T_OBJECT
1496                   , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1497                   HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref))
1498 DEFINE_CALLMETHODV(jint,     Int,     T_INT,
1499                   HOTSPOT_JNI_CALLINTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1500                   HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref))
1501 DEFINE_CALLMETHODV(jlong,    Long,    T_LONG
1502                   , HOTSPOT_JNI_CALLLONGMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1503                   HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref))
1504 // Float and double probes don't return value because dtrace doesn't currently support it
1505 DEFINE_CALLMETHODV(jfloat,   Float,   T_FLOAT
1506                   , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1507                   HOTSPOT_JNI_CALLFLOATMETHODV_RETURN())
1508 DEFINE_CALLMETHODV(jdouble,  Double,  T_DOUBLE
1509                   , HOTSPOT_JNI_CALLDOUBLEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1510                   HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN())
1511 
1512 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1513                           , EntryProbe, ReturnProbe)    \
1514 \
1515   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1516                           , ReturnProbe);                          \
1517 \
1518 JNI_ENTRY(ResultType, \
1519           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1520   JNIWrapper("Call" XSTR(Result) "MethodA"); \
1521   EntryProbe; \
1522   ResultType ret = 0;\
1523   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1524                      (const ResultType&)ret);\
1525 \
1526   JavaValue jvalue(Tag); \
1527   JNI_ArgumentPusherArray ap(methodID, args); \
1528   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1529   ret = jvalue.get_##ResultType(); \
1530   return ret;\
1531 JNI_END
1532 
1533 // the runtime type of subword integral basic types is integer
1534 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1535                   , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1536                   HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref))
1537 DEFINE_CALLMETHODA(jbyte,    Byte,    T_BYTE
1538                   , HOTSPOT_JNI_CALLBYTEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1539                   HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref))
1540 DEFINE_CALLMETHODA(jchar,    Char,    T_CHAR
1541                   , HOTSPOT_JNI_CALLCHARMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1542                   HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref))
1543 DEFINE_CALLMETHODA(jshort,   Short,   T_SHORT
1544                   , HOTSPOT_JNI_CALLSHORTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1545                   HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref))
1546 
1547 DEFINE_CALLMETHODA(jobject,  Object,  T_OBJECT
1548                   , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1549                   HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref))
1550 DEFINE_CALLMETHODA(jint,     Int,     T_INT,
1551                   HOTSPOT_JNI_CALLINTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1552                   HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref))
1553 DEFINE_CALLMETHODA(jlong,    Long,    T_LONG
1554                   , HOTSPOT_JNI_CALLLONGMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1555                   HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref))
1556 // Float and double probes don't return value because dtrace doesn't currently support it
1557 DEFINE_CALLMETHODA(jfloat,   Float,   T_FLOAT
1558                   , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1559                   HOTSPOT_JNI_CALLFLOATMETHODA_RETURN())
1560 DEFINE_CALLMETHODA(jdouble,  Double,  T_DOUBLE
1561                   , HOTSPOT_JNI_CALLDOUBLEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1562                   HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN())
1563 
1564 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1565 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1566 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1567 
1568 
1569 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1570   JNIWrapper("CallVoidMethod");
1571   HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(env, obj, (uintptr_t) methodID);
1572   DT_VOID_RETURN_MARK(CallVoidMethod);
1573 
1574   va_list args;
1575   va_start(args, methodID);
1576   JavaValue jvalue(T_VOID);
1577   JNI_ArgumentPusherVaArg ap(methodID, args);
1578   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1579   va_end(args);
1580 JNI_END
1581 
1582 
1583 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1584   JNIWrapper("CallVoidMethodV");
1585   HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(env, obj, (uintptr_t) methodID);
1586   DT_VOID_RETURN_MARK(CallVoidMethodV);
1587 
1588   JavaValue jvalue(T_VOID);
1589   JNI_ArgumentPusherVaArg ap(methodID, args);
1590   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1591 JNI_END
1592 
1593 
1594 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1595   JNIWrapper("CallVoidMethodA");
1596   HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(env, obj, (uintptr_t) methodID);
1597   DT_VOID_RETURN_MARK(CallVoidMethodA);
1598 
1599   JavaValue jvalue(T_VOID);
1600   JNI_ArgumentPusherArray ap(methodID, args);
1601   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1602 JNI_END
1603 
1604 
1605 
1606 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
1607                                     , EntryProbe, ReturnProbe)      \
1608 \
1609   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
1610                           , ReturnProbe);\
1611 \
1612 JNI_ENTRY(ResultType, \
1613           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1614   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1615 \
1616   EntryProbe;\
1617   ResultType ret;\
1618   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1619                      (const ResultType&)ret);\
1620 \
1621   va_list args; \
1622   va_start(args, methodID); \
1623   JavaValue jvalue(Tag); \
1624   JNI_ArgumentPusherVaArg ap(methodID, args); \
1625   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1626   va_end(args); \
1627   ret = jvalue.get_##ResultType(); \
1628   return ret;\
1629 JNI_END
1630 
1631 // the runtime type of subword integral basic types is integer
1632 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
1633                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1634                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
1635 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE
1636                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1637                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
1638 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR
1639                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1640                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
1641 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT
1642                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1643                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
1644 
1645 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT
1646                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1647                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
1648 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT
1649                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1650                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
1651 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG
1652                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1653 // Float and double probes don't return value because dtrace doesn't currently support it
1654                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
1655 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT
1656                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1657                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
1658 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE
1659                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1660                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
1661 
1662 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
1663                                     , EntryProbe, ReturnProbe)      \
1664 \
1665   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
1666                           , ReturnProbe);\
1667 \
1668 JNI_ENTRY(ResultType, \
1669           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1670   JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
1671 \
1672   EntryProbe;\
1673   ResultType ret;\
1674   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1675                      (const ResultType&)ret);\
1676 \
1677   JavaValue jvalue(Tag); \
1678   JNI_ArgumentPusherVaArg ap(methodID, args); \
1679   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1680   ret = jvalue.get_##ResultType(); \
1681   return ret;\
1682 JNI_END
1683 
1684 // the runtime type of subword integral basic types is integer
1685 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
1686                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1687                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
1688 DEFINE_CALLNONVIRTUALMETHODV(jbyte,    Byte,    T_BYTE
1689                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1690                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
1691 DEFINE_CALLNONVIRTUALMETHODV(jchar,    Char,    T_CHAR
1692                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1693                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
1694 DEFINE_CALLNONVIRTUALMETHODV(jshort,   Short,   T_SHORT
1695                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1696                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
1697 
1698 DEFINE_CALLNONVIRTUALMETHODV(jobject,  Object,  T_OBJECT
1699                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1700                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
1701 DEFINE_CALLNONVIRTUALMETHODV(jint,     Int,     T_INT
1702                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1703                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
1704 DEFINE_CALLNONVIRTUALMETHODV(jlong,    Long,    T_LONG
1705                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1706 // Float and double probes don't return value because dtrace doesn't currently support it
1707                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
1708 DEFINE_CALLNONVIRTUALMETHODV(jfloat,   Float,   T_FLOAT
1709                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1710                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
1711 DEFINE_CALLNONVIRTUALMETHODV(jdouble,  Double,  T_DOUBLE
1712                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1713                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
1714 
1715 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
1716                                     , EntryProbe, ReturnProbe)      \
1717 \
1718   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
1719                           , ReturnProbe);\
1720 \
1721 JNI_ENTRY(ResultType, \
1722           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1723   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1724 \
1725   EntryProbe;\
1726   ResultType ret;\
1727   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1728                      (const ResultType&)ret);\
1729 \
1730   JavaValue jvalue(Tag); \
1731   JNI_ArgumentPusherArray ap(methodID, args); \
1732   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1733   ret = jvalue.get_##ResultType(); \
1734   return ret;\
1735 JNI_END
1736 
1737 // the runtime type of subword integral basic types is integer
1738 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
1739                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1740                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
1741 DEFINE_CALLNONVIRTUALMETHODA(jbyte,    Byte,    T_BYTE
1742                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1743                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
1744 DEFINE_CALLNONVIRTUALMETHODA(jchar,    Char,    T_CHAR
1745                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1746                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
1747 DEFINE_CALLNONVIRTUALMETHODA(jshort,   Short,   T_SHORT
1748                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1749                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
1750 
1751 DEFINE_CALLNONVIRTUALMETHODA(jobject,  Object,  T_OBJECT
1752                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1753                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
1754 DEFINE_CALLNONVIRTUALMETHODA(jint,     Int,     T_INT
1755                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1756                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
1757 DEFINE_CALLNONVIRTUALMETHODA(jlong,    Long,    T_LONG
1758                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1759 // Float and double probes don't return value because dtrace doesn't currently support it
1760                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
1761 DEFINE_CALLNONVIRTUALMETHODA(jfloat,   Float,   T_FLOAT
1762                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1763                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
1764 DEFINE_CALLNONVIRTUALMETHODA(jdouble,  Double,  T_DOUBLE
1765                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1766                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
1767 
1768 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
1769                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
1770 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
1771                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
1772 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
1773                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
1774 
1775 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
1776   JNIWrapper("CallNonvirtualVoidMethod");
1777 
1778   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(env, obj, cls, (uintptr_t) methodID);
1779   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
1780 
1781   va_list args;
1782   va_start(args, methodID);
1783   JavaValue jvalue(T_VOID);
1784   JNI_ArgumentPusherVaArg ap(methodID, args);
1785   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1786   va_end(args);
1787 JNI_END
1788 
1789 
1790 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
1791   JNIWrapper("CallNonvirtualVoidMethodV");
1792 
1793   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
1794                env, obj, cls, (uintptr_t) methodID);
1795   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
1796 
1797   JavaValue jvalue(T_VOID);
1798   JNI_ArgumentPusherVaArg ap(methodID, args);
1799   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1800 JNI_END
1801 
1802 
1803 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
1804   JNIWrapper("CallNonvirtualVoidMethodA");
1805   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
1806                 env, obj, cls, (uintptr_t) methodID);
1807   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
1808   JavaValue jvalue(T_VOID);
1809   JNI_ArgumentPusherArray ap(methodID, args);
1810   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1811 JNI_END
1812 
1813 
1814 
1815 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
1816                                 , EntryProbe, ResultProbe) \
1817 \
1818   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
1819                           , ResultProbe);                               \
1820 \
1821 JNI_ENTRY(ResultType, \
1822           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
1823   JNIWrapper("CallStatic" XSTR(Result) "Method"); \
1824 \
1825   EntryProbe; \
1826   ResultType ret = 0;\
1827   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
1828                      (const ResultType&)ret);\
1829 \
1830   va_list args; \
1831   va_start(args, methodID); \
1832   JavaValue jvalue(Tag); \
1833   JNI_ArgumentPusherVaArg ap(methodID, args); \
1834   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1835   va_end(args); \
1836   ret = jvalue.get_##ResultType(); \
1837   return ret;\
1838 JNI_END
1839 
1840 // the runtime type of subword integral basic types is integer
1841 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
1842                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1843                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
1844 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE
1845                         , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1846                         HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
1847 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR
1848                         , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1849                         HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
1850 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT
1851                         , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1852                         HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
1853 
1854 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT
1855                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1856                         HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
1857 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT
1858                         , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1859                         HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
1860 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG
1861                         , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1862                         HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
1863 // Float and double probes don't return value because dtrace doesn't currently support it
1864 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT
1865                         , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1866                         HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
1867 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE
1868                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1869                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
1870 
1871 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
1872                                 , EntryProbe, ResultProbe) \
1873 \
1874   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
1875                           , ResultProbe);                               \
1876 \
1877 JNI_ENTRY(ResultType, \
1878           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
1879   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
1880 \
1881   EntryProbe; \
1882   ResultType ret = 0;\
1883   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
1884                      (const ResultType&)ret);\
1885 \
1886   JavaValue jvalue(Tag); \
1887   JNI_ArgumentPusherVaArg ap(methodID, args); \
1888   /* Make sure class is initialized before trying to invoke its method */ \
1889   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
1890   k()->initialize(CHECK_0); \
1891   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1892   va_end(args); \
1893   ret = jvalue.get_##ResultType(); \
1894   return ret;\
1895 JNI_END
1896 
1897 // the runtime type of subword integral basic types is integer
1898 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
1899                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1900                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
1901 DEFINE_CALLSTATICMETHODV(jbyte,    Byte,    T_BYTE
1902                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1903                         HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
1904 DEFINE_CALLSTATICMETHODV(jchar,    Char,    T_CHAR
1905                         , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1906                         HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
1907 DEFINE_CALLSTATICMETHODV(jshort,   Short,   T_SHORT
1908                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1909                         HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
1910 
1911 DEFINE_CALLSTATICMETHODV(jobject,  Object,  T_OBJECT
1912                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1913                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
1914 DEFINE_CALLSTATICMETHODV(jint,     Int,     T_INT
1915                         , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1916                         HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
1917 DEFINE_CALLSTATICMETHODV(jlong,    Long,    T_LONG
1918                         , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1919                         HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
1920 // Float and double probes don't return value because dtrace doesn't currently support it
1921 DEFINE_CALLSTATICMETHODV(jfloat,   Float,   T_FLOAT
1922                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1923                         HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
1924 DEFINE_CALLSTATICMETHODV(jdouble,  Double,  T_DOUBLE
1925                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1926                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
1927 
1928 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
1929                                 , EntryProbe, ResultProbe) \
1930 \
1931   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
1932                           , ResultProbe);                               \
1933 \
1934 JNI_ENTRY(ResultType, \
1935           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
1936   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
1937 \
1938   EntryProbe; \
1939   ResultType ret = 0;\
1940   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
1941                      (const ResultType&)ret);\
1942 \
1943   JavaValue jvalue(Tag); \
1944   JNI_ArgumentPusherArray ap(methodID, args); \
1945   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1946   ret = jvalue.get_##ResultType(); \
1947   return ret;\
1948 JNI_END
1949 
1950 // the runtime type of subword integral basic types is integer
1951 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
1952                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1953                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
1954 DEFINE_CALLSTATICMETHODA(jbyte,    Byte,    T_BYTE
1955                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1956                         HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
1957 DEFINE_CALLSTATICMETHODA(jchar,    Char,    T_CHAR
1958                         , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1959                         HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
1960 DEFINE_CALLSTATICMETHODA(jshort,   Short,   T_SHORT
1961                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1962                         HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
1963 
1964 DEFINE_CALLSTATICMETHODA(jobject,  Object,  T_OBJECT
1965                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1966                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
1967 DEFINE_CALLSTATICMETHODA(jint,     Int,     T_INT
1968                         , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1969                         HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
1970 DEFINE_CALLSTATICMETHODA(jlong,    Long,    T_LONG
1971                         , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1972                         HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
1973 // Float and double probes don't return value because dtrace doesn't currently support it
1974 DEFINE_CALLSTATICMETHODA(jfloat,   Float,   T_FLOAT
1975                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1976                         HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
1977 DEFINE_CALLSTATICMETHODA(jdouble,  Double,  T_DOUBLE
1978                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1979                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
1980 
1981 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
1982                          , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
1983 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
1984                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
1985 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
1986                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
1987 
1988 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
1989   JNIWrapper("CallStaticVoidMethod");
1990   HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(env, cls, (uintptr_t) methodID);
1991   DT_VOID_RETURN_MARK(CallStaticVoidMethod);
1992 
1993   va_list args;
1994   va_start(args, methodID);
1995   JavaValue jvalue(T_VOID);
1996   JNI_ArgumentPusherVaArg ap(methodID, args);
1997   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
1998   va_end(args);
1999 JNI_END
2000 
2001 
2002 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2003   JNIWrapper("CallStaticVoidMethodV");
2004   HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(env, cls, (uintptr_t) methodID);
2005   DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2006 
2007   JavaValue jvalue(T_VOID);
2008   JNI_ArgumentPusherVaArg ap(methodID, args);
2009   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2010 JNI_END
2011 
2012 
2013 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2014   JNIWrapper("CallStaticVoidMethodA");
2015   HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(env, cls, (uintptr_t) methodID);
2016   DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2017 
2018   JavaValue jvalue(T_VOID);
2019   JNI_ArgumentPusherArray ap(methodID, args);
2020   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2021 JNI_END
2022 
2023 
2024 //
2025 // Accessing Fields
2026 //
2027 
2028 
2029 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2030                     , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2031 
2032 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2033           const char *name, const char *sig))
2034   JNIWrapper("GetFieldID");
2035   HOTSPOT_JNI_GETFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
2036   jfieldID ret = 0;
2037   DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2038 
2039   // The class should have been loaded (we have an instance of the class
2040   // passed in) so the field and signature should already be in the symbol
2041   // table.  If they're not there, the field doesn't exist.
2042   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2043   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2044   if (fieldname == NULL || signame == NULL) {
2045     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2046   }
2047   KlassHandle k(THREAD,
2048                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2049   // Make sure class is initialized before handing id's out to fields
2050   k()->initialize(CHECK_NULL);
2051 
2052   fieldDescriptor fd;
2053   if (!k()->oop_is_instance() ||
2054       !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2055     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2056   }
2057 
2058   // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2059   // It may also have hash bits for k, if VerifyJNIFields is turned on.
2060   ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2061   return ret;
2062 JNI_END
2063 
2064 
2065 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2066   JNIWrapper("GetObjectField");
2067   HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID);
2068   oop o = JNIHandles::resolve_non_null(obj);
2069   Klass* k = o->klass();
2070   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2071   // Keep JVMTI addition small and only check enabled flag here.
2072   // jni_GetField_probe() assumes that is okay to create handles.
2073   if (JvmtiExport::should_post_field_access()) {
2074     o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2075   }
2076   jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2077 #if INCLUDE_ALL_GCS
2078   // If G1 is enabled and we are accessing the value of the referent
2079   // field in a reference object then we need to register a non-null
2080   // referent with the SATB barrier.
2081   if (UseG1GC) {
2082     bool needs_barrier = false;
2083 
2084     if (ret != NULL &&
2085         offset == java_lang_ref_Reference::referent_offset &&
2086         InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2087       assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2088       needs_barrier = true;
2089     }
2090 
2091     if (needs_barrier) {
2092       oop referent = JNIHandles::resolve(ret);
2093       G1SATBCardTableModRefBS::enqueue(referent);
2094     }
2095   }
2096 #endif // INCLUDE_ALL_GCS
2097 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(ret);
2098   return ret;
2099 JNI_END
2100 
2101 
2102 
2103 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2104   , EntryProbe, ReturnProbe) \
2105 \
2106   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2107   , ReturnProbe); \
2108 \
2109 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2110   JNIWrapper("Get" XSTR(Result) "Field"); \
2111 \
2112   EntryProbe; \
2113   Return ret = 0;\
2114   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2115 \
2116   oop o = JNIHandles::resolve_non_null(obj); \
2117   Klass* k = o->klass(); \
2118   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2119   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2120   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2121   /* and creates a ResetNoHandleMark.                                   */ \
2122   if (JvmtiExport::should_post_field_access()) { \
2123     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2124   } \
2125   ret = o->Fieldname##_field(offset); \
2126   return ret; \
2127 JNI_END
2128 
2129 DEFINE_GETFIELD(jboolean, bool,   Boolean
2130                 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2131                 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2132 DEFINE_GETFIELD(jbyte,    byte,   Byte
2133                 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2134                 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2135 DEFINE_GETFIELD(jchar,    char,   Char
2136                 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2137                 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2138 DEFINE_GETFIELD(jshort,   short,  Short
2139                 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2140                 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2141 DEFINE_GETFIELD(jint,     int,    Int
2142                 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2143                 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2144 DEFINE_GETFIELD(jlong,    long,   Long
2145                 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2146                 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2147 // Float and double probes don't return value because dtrace doesn't currently support it
2148 DEFINE_GETFIELD(jfloat,   float,  Float
2149                 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2150                 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2151 DEFINE_GETFIELD(jdouble,  double, Double
2152                 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2153                 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2154 
2155 address jni_GetBooleanField_addr() {
2156   return (address)jni_GetBooleanField;
2157 }
2158 address jni_GetByteField_addr() {
2159   return (address)jni_GetByteField;
2160 }
2161 address jni_GetCharField_addr() {
2162   return (address)jni_GetCharField;
2163 }
2164 address jni_GetShortField_addr() {
2165   return (address)jni_GetShortField;
2166 }
2167 address jni_GetIntField_addr() {
2168   return (address)jni_GetIntField;
2169 }
2170 address jni_GetLongField_addr() {
2171   return (address)jni_GetLongField;
2172 }
2173 address jni_GetFloatField_addr() {
2174   return (address)jni_GetFloatField;
2175 }
2176 address jni_GetDoubleField_addr() {
2177   return (address)jni_GetDoubleField;
2178 }
2179 
2180 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2181   JNIWrapper("SetObjectField");
2182   HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID, value);
2183   oop o = JNIHandles::resolve_non_null(obj);
2184   Klass* k = o->klass();
2185   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2186   // Keep JVMTI addition small and only check enabled flag here.
2187   // jni_SetField_probe_nh() assumes that is not okay to create handles
2188   // and creates a ResetNoHandleMark.
2189   if (JvmtiExport::should_post_field_modification()) {
2190     jvalue field_value;
2191     field_value.l = value;
2192     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2193   }
2194   o->obj_field_put(offset, JNIHandles::resolve(value));
2195   HOTSPOT_JNI_SETOBJECTFIELD_RETURN();
2196 JNI_END
2197 
2198 
2199 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2200                         , EntryProbe, ReturnProbe) \
2201 \
2202 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2203   JNIWrapper("Set" XSTR(Result) "Field"); \
2204 \
2205   EntryProbe; \
2206 \
2207   oop o = JNIHandles::resolve_non_null(obj); \
2208   Klass* k = o->klass(); \
2209   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2210   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2211   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2212   /* and creates a ResetNoHandleMark.                                   */ \
2213   if (JvmtiExport::should_post_field_modification()) { \
2214     jvalue field_value; \
2215     field_value.unionType = value; \
2216     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2217   } \
2218   o->Fieldname##_field_put(offset, value); \
2219   ReturnProbe; \
2220 JNI_END
2221 
2222 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z
2223                 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2224                 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2225 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b
2226                 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2227                 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2228 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c
2229                 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2230                 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2231 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s
2232                 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2233                 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2234 DEFINE_SETFIELD(jint,     int,    Int,     'I', i
2235                 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2236                 HOTSPOT_JNI_SETINTFIELD_RETURN())
2237 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j
2238                 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2239                 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2240 // Float and double probes don't return value because dtrace doesn't currently support it
2241 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f
2242                 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2243                 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2244 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d
2245                 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2246                 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2247 
2248 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2249                     , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2250 
2251 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2252   JNIWrapper("ToReflectedField");
2253   HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(env, cls, (uintptr_t) fieldID, isStatic);
2254   jobject ret = NULL;
2255   DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2256 
2257   fieldDescriptor fd;
2258   bool found = false;
2259   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2260 
2261   assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2262 
2263   if (isStatic) {
2264     // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2265     JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2266     assert(id->is_static_field_id(), "invalid static field id");
2267     found = id->find_local_field(&fd);
2268   } else {
2269     // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2270     int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2271     found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2272   }
2273   assert(found, "bad fieldID passed into jni_ToReflectedField");
2274   oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2275   ret = JNIHandles::make_local(env, reflected);
2276   return ret;
2277 JNI_END
2278 
2279 
2280 //
2281 // Accessing Static Fields
2282 //
2283 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2284                     , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2285 
2286 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2287           const char *name, const char *sig))
2288   JNIWrapper("GetStaticFieldID");
2289   HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
2290   jfieldID ret = NULL;
2291   DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2292 
2293   // The class should have been loaded (we have an instance of the class
2294   // passed in) so the field and signature should already be in the symbol
2295   // table.  If they're not there, the field doesn't exist.
2296   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2297   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2298   if (fieldname == NULL || signame == NULL) {
2299     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2300   }
2301   KlassHandle k(THREAD,
2302                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2303   // Make sure class is initialized before handing id's out to static fields
2304   k()->initialize(CHECK_NULL);
2305 
2306   fieldDescriptor fd;
2307   if (!k()->oop_is_instance() ||
2308       !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2309     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2310   }
2311 
2312   // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2313   JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2314   debug_only(id->set_is_static_field_id();)
2315 
2316   debug_only(id->verify(fd.field_holder()));
2317 
2318   ret = jfieldIDWorkaround::to_static_jfieldID(id);
2319   return ret;
2320 JNI_END
2321 
2322 
2323 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2324   JNIWrapper("GetStaticObjectField");
2325   HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID);
2326 #if INCLUDE_JNI_CHECK
2327   DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2328 #endif // INCLUDE_JNI_CHECK
2329   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2330   assert(id->is_static_field_id(), "invalid static field id");
2331   // Keep JVMTI addition small and only check enabled flag here.
2332   // jni_GetField_probe() assumes that is okay to create handles.
2333   if (JvmtiExport::should_post_field_access()) {
2334     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2335   }
2336   jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2337   HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(ret);
2338   return ret;
2339 JNI_END
2340 
2341 
2342 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
2343                               , EntryProbe, ReturnProbe) \
2344 \
2345   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
2346                           , ReturnProbe);                                          \
2347 \
2348 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
2349   JNIWrapper("GetStatic" XSTR(Result) "Field"); \
2350   EntryProbe; \
2351   Return ret = 0;\
2352   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
2353                      (const Return&)ret);\
2354   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2355   assert(id->is_static_field_id(), "invalid static field id"); \
2356   /* Keep JVMTI addition small and only check enabled flag here. */ \
2357   /* jni_GetField_probe() assumes that is okay to create handles. */ \
2358   if (JvmtiExport::should_post_field_access()) { \
2359     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
2360   } \
2361   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
2362   return ret;\
2363 JNI_END
2364 
2365 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean
2366                       , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
2367 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte
2368                       , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref)   )
2369 DEFINE_GETSTATICFIELD(jchar,    char,   Char
2370                       , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref)   )
2371 DEFINE_GETSTATICFIELD(jshort,   short,  Short
2372                       , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref)  )
2373 DEFINE_GETSTATICFIELD(jint,     int,    Int
2374                       , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),     HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref)    )
2375 DEFINE_GETSTATICFIELD(jlong,    long,   Long
2376                       , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref)   )
2377 // Float and double probes don't return value because dtrace doesn't currently support it
2378 DEFINE_GETSTATICFIELD(jfloat,   float,  Float
2379                       , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN()          )
2380 DEFINE_GETSTATICFIELD(jdouble,  double, Double
2381                       , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),  HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN()         )
2382 
2383 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
2384   JNIWrapper("SetStaticObjectField");
2385  HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value);
2386   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2387   assert(id->is_static_field_id(), "invalid static field id");
2388   // Keep JVMTI addition small and only check enabled flag here.
2389   // jni_SetField_probe() assumes that is okay to create handles.
2390   if (JvmtiExport::should_post_field_modification()) {
2391     jvalue field_value;
2392     field_value.l = value;
2393     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
2394   }
2395   id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
2396   HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN();
2397 JNI_END
2398 
2399 
2400 
2401 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
2402                               , EntryProbe, ReturnProbe) \
2403 \
2404 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
2405   JNIWrapper("SetStatic" XSTR(Result) "Field"); \
2406   EntryProbe; \
2407 \
2408   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2409   assert(id->is_static_field_id(), "invalid static field id"); \
2410   /* Keep JVMTI addition small and only check enabled flag here. */ \
2411   /* jni_SetField_probe() assumes that is okay to create handles. */ \
2412   if (JvmtiExport::should_post_field_modification()) { \
2413     jvalue field_value; \
2414     field_value.unionType = value; \
2415     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
2416   } \
2417   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
2418   ReturnProbe;\
2419 JNI_END
2420 
2421 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z
2422                       , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
2423                       HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2424 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b
2425                       , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2426                       HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
2427 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c
2428                       , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2429                       HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
2430 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s
2431                       , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2432                       HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
2433 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i
2434                       , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2435                       HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
2436 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j
2437                       , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2438                       HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
2439 // Float and double probes don't return value because dtrace doesn't currently support it
2440 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f
2441                       , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
2442                       HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
2443 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d
2444                       , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
2445                       HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
2446 
2447 //
2448 // String Operations
2449 //
2450 
2451 // Unicode Interface
2452 
2453 DT_RETURN_MARK_DECL(NewString, jstring
2454                     , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
2455 
2456 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
2457   JNIWrapper("NewString");
2458  HOTSPOT_JNI_NEWSTRING_ENTRY(env, (uint16_t *) unicodeChars, len);
2459   jstring ret = NULL;
2460   DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
2461   oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
2462   ret = (jstring) JNIHandles::make_local(env, string);
2463   return ret;
2464 JNI_END
2465 
2466 
2467 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
2468   JNIWrapper("GetStringLength");
2469   HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(env, string);
2470   jsize ret = 0;
2471   oop s = JNIHandles::resolve_non_null(string);
2472   if (java_lang_String::value(s) != NULL) {
2473     ret = java_lang_String::length(s);
2474   }
2475  HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(ret);
2476   return ret;
2477 JNI_END
2478 
2479 
2480 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
2481   JNIEnv *env, jstring string, jboolean *isCopy))
2482   JNIWrapper("GetStringChars");
2483  HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
2484   jchar* buf = NULL;
2485   oop s = JNIHandles::resolve_non_null(string);
2486   typeArrayOop s_value = java_lang_String::value(s);
2487   if (s_value != NULL) {
2488     int s_len = java_lang_String::length(s);
2489     int s_offset = java_lang_String::offset(s);
2490     buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal);  // add one for zero termination
2491     /* JNI Specification states return NULL on OOM */
2492     if (buf != NULL) {
2493       if (s_len > 0) {
2494         memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
2495       }
2496       buf[s_len] = 0;
2497       //%note jni_5
2498       if (isCopy != NULL) {
2499         *isCopy = JNI_TRUE;
2500       }
2501     }
2502   }
2503   HOTSPOT_JNI_GETSTRINGCHARS_RETURN(buf);
2504   return buf;
2505 JNI_END
2506 
2507 
2508 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
2509   JNIWrapper("ReleaseStringChars");
2510   HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(env, str, (uint16_t *) chars);
2511   //%note jni_6
2512   if (chars != NULL) {
2513     // Since String objects are supposed to be immutable, don't copy any
2514     // new data back.  A bad user will have to go after the char array.
2515     FreeHeap((void*) chars);
2516   }
2517   HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN();
2518 JNI_END
2519 
2520 
2521 // UTF Interface
2522 
2523 DT_RETURN_MARK_DECL(NewStringUTF, jstring
2524                     , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
2525 
2526 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
2527   JNIWrapper("NewStringUTF");
2528   HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(env, (char *) bytes);
2529   jstring ret;
2530   DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
2531 
2532   oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
2533   ret = (jstring) JNIHandles::make_local(env, result);
2534   return ret;
2535 JNI_END
2536 
2537 
2538 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
2539   JNIWrapper("GetStringUTFLength");
2540  HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(env, string);
2541   jsize ret = 0;
2542   oop java_string = JNIHandles::resolve_non_null(string);
2543   if (java_lang_String::value(java_string) != NULL) {
2544     ret = java_lang_String::utf8_length(java_string);
2545   }
2546   HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(ret);
2547   return ret;
2548 JNI_END
2549 
2550 
2551 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
2552   JNIWrapper("GetStringUTFChars");
2553  HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
2554   char* result = NULL;
2555   oop java_string = JNIHandles::resolve_non_null(string);
2556   if (java_lang_String::value(java_string) != NULL) {
2557     size_t length = java_lang_String::utf8_length(java_string);
2558     /* JNI Specification states return NULL on OOM */
2559     result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
2560     if (result != NULL) {
2561       java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
2562       if (isCopy != NULL) {
2563         *isCopy = JNI_TRUE;
2564       }
2565     }
2566   }
2567  HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(result);
2568   return result;
2569 JNI_END
2570 
2571 
2572 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
2573   JNIWrapper("ReleaseStringUTFChars");
2574  HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(env, str, (char *) chars);
2575   if (chars != NULL) {
2576     FreeHeap((char*) chars);
2577   }
2578 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN();
2579 JNI_END
2580 
2581 
2582 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
2583   JNIWrapper("GetArrayLength");
2584  HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(env, array);
2585   arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
2586   assert(a->is_array(), "must be array");
2587   jsize ret = a->length();
2588  HOTSPOT_JNI_GETARRAYLENGTH_RETURN(ret);
2589   return ret;
2590 JNI_END
2591 
2592 
2593 //
2594 // Object Array Operations
2595 //
2596 
2597 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
2598                     , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
2599 
2600 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
2601   JNIWrapper("NewObjectArray");
2602  HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(env, length, elementClass, initialElement);
2603   jobjectArray ret = NULL;
2604   DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
2605   KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
2606   Klass* ako = ek()->array_klass(CHECK_NULL);
2607   KlassHandle ak = KlassHandle(THREAD, ako);
2608   ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
2609   objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
2610   oop initial_value = JNIHandles::resolve(initialElement);
2611   if (initial_value != NULL) {  // array already initialized with NULL
2612     for (int index = 0; index < length; index++) {
2613       result->obj_at_put(index, initial_value);
2614     }
2615   }
2616   ret = (jobjectArray) JNIHandles::make_local(env, result);
2617   return ret;
2618 JNI_END
2619 
2620 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
2621                     , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
2622 
2623 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
2624   JNIWrapper("GetObjectArrayElement");
2625  HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(env, array, index);
2626   jobject ret = NULL;
2627   DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
2628   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
2629   if (a->is_within_bounds(index)) {
2630     ret = JNIHandles::make_local(env, a->obj_at(index));
2631     return ret;
2632   } else {
2633     char buf[jintAsStringSize];
2634     sprintf(buf, "%d", index);
2635     THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
2636   }
2637 JNI_END
2638 
2639 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
2640                          , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
2641 
2642 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
2643   JNIWrapper("SetObjectArrayElement");
2644  HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(env, array, index, value);
2645   DT_VOID_RETURN_MARK(SetObjectArrayElement);
2646 
2647   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
2648   oop v = JNIHandles::resolve(value);
2649   if (a->is_within_bounds(index)) {
2650     if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
2651       a->obj_at_put(index, v);
2652     } else {
2653       THROW(vmSymbols::java_lang_ArrayStoreException());
2654     }
2655   } else {
2656     char buf[jintAsStringSize];
2657     sprintf(buf, "%d", index);
2658     THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
2659   }
2660 JNI_END
2661 
2662 
2663 
2664 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
2665                               ,EntryProbe,ReturnProbe)  \
2666 \
2667   DT_RETURN_MARK_DECL(New##Result##Array, Return \
2668                       , ReturnProbe); \
2669 \
2670 JNI_ENTRY(Return, \
2671           jni_New##Result##Array(JNIEnv *env, jsize len)) \
2672   JNIWrapper("New" XSTR(Result) "Array"); \
2673   EntryProbe; \
2674   Return ret = NULL;\
2675   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
2676 \
2677   oop obj= oopFactory::Allocator(len, CHECK_0); \
2678   ret = (Return) JNIHandles::make_local(env, obj); \
2679   return ret;\
2680 JNI_END
2681 
2682 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean,
2683                       HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
2684                       HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
2685 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte,
2686                       HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
2687                       HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
2688 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short,
2689                       HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
2690                       HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
2691 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char,
2692                       HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
2693                       HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
2694 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int,
2695                       HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
2696                       HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
2697 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long,
2698                       HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
2699                       HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
2700 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float,
2701                       HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
2702                       HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
2703 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double,
2704                       HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
2705                       HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
2706 
2707 // Return an address which will fault if the caller writes to it.
2708 
2709 static char* get_bad_address() {
2710   static char* bad_address = NULL;
2711   if (bad_address == NULL) {
2712     size_t size = os::vm_allocation_granularity();
2713     bad_address = os::reserve_memory(size);
2714     if (bad_address != NULL) {
2715       os::protect_memory(bad_address, size, os::MEM_PROT_READ,
2716                          /*is_committed*/false);
2717     }
2718   }
2719   return bad_address;
2720 }
2721 
2722 
2723 
2724 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
2725                                       , EntryProbe, ReturnProbe) \
2726 \
2727 JNI_QUICK_ENTRY(ElementType*, \
2728           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
2729   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
2730   EntryProbe; \
2731   /* allocate an chunk of memory in c land */ \
2732   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2733   ElementType* result; \
2734   int len = a->length(); \
2735   if (len == 0) { \
2736     /* Empty array: legal but useless, can't return NULL. \
2737      * Return a pointer to something useless. \
2738      * Avoid asserts in typeArrayOop. */ \
2739     result = (ElementType*)get_bad_address(); \
2740   } else { \
2741     /* JNI Specification states return NULL on OOM */                    \
2742     result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
2743     if (result != NULL) {                                                \
2744       /* copy the array to the c chunk */                                \
2745       memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len);      \
2746       if (isCopy) {                                                      \
2747         *isCopy = JNI_TRUE;                                              \
2748       }                                                                  \
2749     }                                                                    \
2750   } \
2751   ReturnProbe; \
2752   return result; \
2753 JNI_END
2754 
2755 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
2756                               , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2757                               HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
2758 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte
2759                               , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2760                               HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
2761 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short
2762                               , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
2763                               HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
2764 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char
2765                               , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
2766                               HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
2767 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int
2768                               , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2769                               HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
2770 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long
2771                               , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2772                               HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
2773 // Float and double probes don't return value because dtrace doesn't currently support it
2774 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float
2775                               , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2776                               HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
2777 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double
2778                               , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2779                               HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
2780 
2781 
2782 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
2783                                           , EntryProbe, ReturnProbe);\
2784 \
2785 JNI_QUICK_ENTRY(void, \
2786           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
2787                                              ElementType *buf, jint mode)) \
2788   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
2789   EntryProbe; \
2790   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2791   int len = a->length(); \
2792   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \
2793     if ((mode == 0) || (mode == JNI_COMMIT)) { \
2794       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
2795     } \
2796     if ((mode == 0) || (mode == JNI_ABORT)) { \
2797       FreeHeap(buf); \
2798     } \
2799   } \
2800   ReturnProbe; \
2801 JNI_END
2802 
2803 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
2804                                   , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
2805                                   HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
2806 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte
2807                                   , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
2808                                   HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
2809 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short
2810                                   ,  HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
2811                                   HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
2812 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char
2813                                   ,  HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
2814                                   HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
2815 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int
2816                                   , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
2817                                   HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
2818 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long
2819                                   , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
2820                                   HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
2821 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float
2822                                   , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
2823                                   HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
2824 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double
2825                                   , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
2826                                   HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
2827 
2828 
2829 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
2830                                     , EntryProbe, ReturnProbe); \
2831   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
2832                            , ReturnProbe); \
2833 \
2834 JNI_ENTRY(void, \
2835 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
2836              jsize len, ElementType *buf)) \
2837   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
2838   EntryProbe; \
2839   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
2840   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2841   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
2842     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
2843   } else { \
2844     if (len > 0) { \
2845       int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
2846       memcpy((u_char*) buf, \
2847              (u_char*) src->Tag##_at_addr(start), \
2848              len << sc);                          \
2849     } \
2850   } \
2851 JNI_END
2852 
2853 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
2854                             , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2855                             HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
2856 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte
2857                             ,  HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
2858                             HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
2859 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short
2860                             , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2861                             HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
2862 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char
2863                             ,  HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
2864                             HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
2865 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int
2866                             , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
2867                             HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
2868 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long
2869                             ,  HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2870                             HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
2871 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float
2872                             , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
2873                             HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
2874 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double
2875                             , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
2876                             HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
2877 
2878 
2879 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
2880                                     , EntryProbe, ReturnProbe); \
2881   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
2882                            ,ReturnProbe);           \
2883 \
2884 JNI_ENTRY(void, \
2885 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
2886              jsize len, const ElementType *buf)) \
2887   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
2888   EntryProbe; \
2889   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
2890   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2891   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
2892     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
2893   } else { \
2894     if (len > 0) { \
2895       int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
2896       memcpy((u_char*) dst->Tag##_at_addr(start), \
2897              (u_char*) buf, \
2898              len << sc);    \
2899     } \
2900   } \
2901 JNI_END
2902 
2903 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
2904                             , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
2905                             HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
2906 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte
2907                             , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
2908                             HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
2909 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short
2910                             , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2911                             HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
2912 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char
2913                             , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2914                             HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
2915 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int
2916                             , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
2917                             HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
2918 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long
2919                             , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2920                             HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
2921 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float
2922                             , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
2923                             HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
2924 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double
2925                             , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
2926                             HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
2927 
2928 
2929 //
2930 // Interception of natives
2931 //
2932 
2933 // The RegisterNatives call being attempted tried to register with a method that
2934 // is not native.  Ask JVM TI what prefixes have been specified.  Then check
2935 // to see if the native method is now wrapped with the prefixes.  See the
2936 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
2937 static Method* find_prefixed_native(KlassHandle k,
2938                                       Symbol* name, Symbol* signature, TRAPS) {
2939 #if INCLUDE_JVMTI
2940   ResourceMark rm(THREAD);
2941   Method* method;
2942   int name_len = name->utf8_length();
2943   char* name_str = name->as_utf8();
2944   int prefix_count;
2945   char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
2946   for (int i = 0; i < prefix_count; i++) {
2947     char* prefix = prefixes[i];
2948     int prefix_len = (int)strlen(prefix);
2949 
2950     // try adding this prefix to the method name and see if it matches another method name
2951     int trial_len = name_len + prefix_len;
2952     char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
2953     strcpy(trial_name_str, prefix);
2954     strcat(trial_name_str, name_str);
2955     TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
2956     if (trial_name == NULL) {
2957       continue; // no such symbol, so this prefix wasn't used, try the next prefix
2958     }
2959     method = k()->lookup_method(trial_name, signature);
2960     if (method == NULL) {
2961       continue; // signature doesn't match, try the next prefix
2962     }
2963     if (method->is_native()) {
2964       method->set_is_prefixed_native();
2965       return method; // wahoo, we found a prefixed version of the method, return it
2966     }
2967     // found as non-native, so prefix is good, add it, probably just need more prefixes
2968     name_len = trial_len;
2969     name_str = trial_name_str;
2970   }
2971 #endif // INCLUDE_JVMTI
2972   return NULL; // not found
2973 }
2974 
2975 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
2976   Method* method = k()->lookup_method(name, signature);
2977   if (method == NULL) {
2978     ResourceMark rm;
2979     stringStream st;
2980     st.print("Method %s name or signature does not match",
2981              Method::name_and_sig_as_C_string(k(), name, signature));
2982     THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
2983   }
2984   if (!method->is_native()) {
2985     // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
2986     method = find_prefixed_native(k, name, signature, THREAD);
2987     if (method == NULL) {
2988       ResourceMark rm;
2989       stringStream st;
2990       st.print("Method %s is not declared as native",
2991                Method::name_and_sig_as_C_string(k(), name, signature));
2992       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
2993     }
2994   }
2995 
2996   if (entry != NULL) {
2997     method->set_native_function(entry,
2998       Method::native_bind_event_is_interesting);
2999   } else {
3000     method->clear_native_function();
3001   }
3002   if (PrintJNIResolving) {
3003     ResourceMark rm(THREAD);
3004     tty->print_cr("[Registering JNI native method %s.%s]",
3005       method->method_holder()->external_name(),
3006       method->name()->as_C_string());
3007   }
3008   return true;
3009 }
3010 
3011 DT_RETURN_MARK_DECL(RegisterNatives, jint
3012                     , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
3013 
3014 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
3015                                     const JNINativeMethod *methods,
3016                                     jint nMethods))
3017   JNIWrapper("RegisterNatives");
3018   HOTSPOT_JNI_REGISTERNATIVES_ENTRY(env, clazz, (void *) methods, nMethods);
3019   jint ret = 0;
3020   DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
3021 
3022   KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
3023 
3024   for (int index = 0; index < nMethods; index++) {
3025     const char* meth_name = methods[index].name;
3026     const char* meth_sig = methods[index].signature;
3027     int meth_name_len = (int)strlen(meth_name);
3028 
3029     // The class should have been loaded (we have an instance of the class
3030     // passed in) so the method and signature should already be in the symbol
3031     // table.  If they're not there, the method doesn't exist.
3032     TempNewSymbol  name = SymbolTable::probe(meth_name, meth_name_len);
3033     TempNewSymbol  signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
3034 
3035     if (name == NULL || signature == NULL) {
3036       ResourceMark rm;
3037       stringStream st;
3038       st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
3039       // Must return negative value on failure
3040       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
3041     }
3042 
3043     bool res = register_native(h_k, name, signature,
3044                                (address) methods[index].fnPtr, THREAD);
3045     if (!res) {
3046       ret = -1;
3047       break;
3048     }
3049   }
3050   return ret;
3051 JNI_END
3052 
3053 
3054 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
3055   JNIWrapper("UnregisterNatives");
3056  HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(env, clazz);
3057   Klass* k   = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
3058   //%note jni_2
3059   if (k->oop_is_instance()) {
3060     for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
3061       Method* m = InstanceKlass::cast(k)->methods()->at(index);
3062       if (m->is_native()) {
3063         m->clear_native_function();
3064         m->set_signature_handler(NULL);
3065       }
3066     }
3067   }
3068  HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(0);
3069   return 0;
3070 JNI_END
3071 
3072 //
3073 // Monitor functions
3074 //
3075 
3076 DT_RETURN_MARK_DECL(MonitorEnter, jint
3077                     , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
3078 
3079 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
3080  HOTSPOT_JNI_MONITORENTER_ENTRY(env, jobj);
3081   jint ret = JNI_ERR;
3082   DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
3083 
3084   // If the object is null, we can't do anything with it
3085   if (jobj == NULL) {
3086     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
3087   }
3088 
3089   Handle obj(thread, JNIHandles::resolve_non_null(jobj));
3090   ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
3091   ret = JNI_OK;
3092   return ret;
3093 JNI_END
3094 
3095 DT_RETURN_MARK_DECL(MonitorExit, jint
3096                     , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
3097 
3098 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
3099  HOTSPOT_JNI_MONITOREXIT_ENTRY(env, jobj);
3100   jint ret = JNI_ERR;
3101   DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
3102 
3103   // Don't do anything with a null object
3104   if (jobj == NULL) {
3105     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
3106   }
3107 
3108   Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
3109   ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
3110 
3111   ret = JNI_OK;
3112   return ret;
3113 JNI_END
3114 
3115 //
3116 // Extensions
3117 //
3118 
3119 DT_VOID_RETURN_MARK_DECL(GetStringRegion
3120                          , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
3121 
3122 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
3123   JNIWrapper("GetStringRegion");
3124  HOTSPOT_JNI_GETSTRINGREGION_ENTRY(env, string, start, len, buf);
3125   DT_VOID_RETURN_MARK(GetStringRegion);
3126   oop s = JNIHandles::resolve_non_null(string);
3127   int s_len = java_lang_String::length(s);
3128   if (start < 0 || len < 0 || start + len > s_len) {
3129     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
3130   } else {
3131     if (len > 0) {
3132       int s_offset = java_lang_String::offset(s);
3133       typeArrayOop s_value = java_lang_String::value(s);
3134       memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
3135     }
3136   }
3137 JNI_END
3138 
3139 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
3140                          , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
3141 
3142 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
3143   JNIWrapper("GetStringUTFRegion");
3144  HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(env, string, start, len, buf);
3145   DT_VOID_RETURN_MARK(GetStringUTFRegion);
3146   oop s = JNIHandles::resolve_non_null(string);
3147   int s_len = java_lang_String::length(s);
3148   if (start < 0 || len < 0 || start + len > s_len) {
3149     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
3150   } else {
3151     //%note jni_7
3152     if (len > 0) {
3153       ResourceMark rm(THREAD);
3154       char *utf_region = java_lang_String::as_utf8_string(s, start, len);
3155       int utf_len = (int)strlen(utf_region);
3156       memcpy(buf, utf_region, utf_len);
3157       buf[utf_len] = 0;
3158     } else {
3159       // JDK null-terminates the buffer even in len is zero
3160       if (buf != NULL) {
3161         buf[0] = 0;
3162       }
3163     }
3164   }
3165 JNI_END
3166 
3167 
3168 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
3169   JNIWrapper("GetPrimitiveArrayCritical");
3170  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(env, array, (uintptr_t *) isCopy);
3171   GC_locker::lock_critical(thread);
3172   if (isCopy != NULL) {
3173     *isCopy = JNI_FALSE;
3174   }
3175   oop a = JNIHandles::resolve_non_null(array);
3176   assert(a->is_array(), "just checking");
3177   BasicType type;
3178   if (a->is_objArray()) {
3179     type = T_OBJECT;
3180   } else {
3181     type = TypeArrayKlass::cast(a->klass())->element_type();
3182   }
3183   void* ret = arrayOop(a)->base(type);
3184  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(ret);
3185   return ret;
3186 JNI_END
3187 
3188 
3189 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
3190   JNIWrapper("ReleasePrimitiveArrayCritical");
3191   HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(env, array, carray, mode);
3192   // The array, carray and mode arguments are ignored
3193   GC_locker::unlock_critical(thread);
3194 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN();
3195 JNI_END
3196 
3197 
3198 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
3199   JNIWrapper("GetStringCritical");
3200   HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(env, string, (uintptr_t *) isCopy);
3201   GC_locker::lock_critical(thread);
3202   if (isCopy != NULL) {
3203     *isCopy = JNI_FALSE;
3204   }
3205   oop s = JNIHandles::resolve_non_null(string);
3206   int s_len = java_lang_String::length(s);
3207   typeArrayOop s_value = java_lang_String::value(s);
3208   int s_offset = java_lang_String::offset(s);
3209   const jchar* ret;
3210   if (s_len > 0) {
3211     ret = s_value->char_at_addr(s_offset);
3212   } else {
3213     ret = (jchar*) s_value->base(T_CHAR);
3214   }
3215  HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN((uint16_t *) ret);
3216   return ret;
3217 JNI_END
3218 
3219 
3220 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
3221   JNIWrapper("ReleaseStringCritical");
3222   HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(env, str, (uint16_t *) chars);
3223   // The str and chars arguments are ignored
3224   GC_locker::unlock_critical(thread);
3225 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN();
3226 JNI_END
3227 
3228 
3229 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
3230   JNIWrapper("jni_NewWeakGlobalRef");
3231  HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(env, ref);
3232   Handle ref_handle(thread, JNIHandles::resolve(ref));
3233   jweak ret = JNIHandles::make_weak_global(ref_handle);
3234  HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(ret);
3235   return ret;
3236 JNI_END
3237 
3238 // Must be JNI_ENTRY (with HandleMark)
3239 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
3240   JNIWrapper("jni_DeleteWeakGlobalRef");
3241   HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(env, ref);
3242   JNIHandles::destroy_weak_global(ref);
3243   HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN();
3244 JNI_END
3245 
3246 
3247 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
3248   JNIWrapper("jni_ExceptionCheck");
3249  HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(env);
3250   jni_check_async_exceptions(thread);
3251   jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
3252  HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(ret);
3253   return ret;
3254 JNI_END
3255 
3256 
3257 // Initialization state for three routines below relating to
3258 // java.nio.DirectBuffers
3259 static          jint directBufferSupportInitializeStarted = 0;
3260 static volatile jint directBufferSupportInitializeEnded   = 0;
3261 static volatile jint directBufferSupportInitializeFailed  = 0;
3262 static jclass    bufferClass                 = NULL;
3263 static jclass    directBufferClass           = NULL;
3264 static jclass    directByteBufferClass       = NULL;
3265 static jmethodID directByteBufferConstructor = NULL;
3266 static jfieldID  directBufferAddressField    = NULL;
3267 static jfieldID  bufferCapacityField         = NULL;
3268 
3269 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
3270   Handle loader;            // null (bootstrap) loader
3271   Handle protection_domain; // null protection domain
3272 
3273   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
3274   jclass result =  find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
3275 
3276   if (TraceClassResolution && result != NULL) {
3277     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
3278   }
3279   return result;
3280 }
3281 
3282 // These lookups are done with the NULL (bootstrap) ClassLoader to
3283 // circumvent any security checks that would be done by jni_FindClass.
3284 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
3285 {
3286   if ((bufferClass           = lookupOne(env, "java/nio/Buffer", thread))           == NULL) { return false; }
3287   if ((directBufferClass     = lookupOne(env, "sun/nio/ch/DirectBuffer", thread))   == NULL) { return false; }
3288   if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
3289   return true;
3290 }
3291 JNI_END
3292 
3293 
3294 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
3295   if (directBufferSupportInitializeFailed) {
3296     return false;
3297   }
3298 
3299   if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
3300     if (!lookupDirectBufferClasses(env)) {
3301       directBufferSupportInitializeFailed = 1;
3302       return false;
3303     }
3304 
3305     // Make global references for these
3306     bufferClass           = (jclass) env->NewGlobalRef(bufferClass);
3307     directBufferClass     = (jclass) env->NewGlobalRef(directBufferClass);
3308     directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
3309 
3310     // Get needed field and method IDs
3311     directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
3312     if (env->ExceptionCheck()) {
3313       env->ExceptionClear();
3314       directBufferSupportInitializeFailed = 1;
3315       return false;
3316     }
3317     directBufferAddressField    = env->GetFieldID(bufferClass, "address", "J");
3318     if (env->ExceptionCheck()) {
3319       env->ExceptionClear();
3320       directBufferSupportInitializeFailed = 1;
3321       return false;
3322     }
3323     bufferCapacityField         = env->GetFieldID(bufferClass, "capacity", "I");
3324     if (env->ExceptionCheck()) {
3325       env->ExceptionClear();
3326       directBufferSupportInitializeFailed = 1;
3327       return false;
3328     }
3329 
3330     if ((directByteBufferConstructor == NULL) ||
3331         (directBufferAddressField    == NULL) ||
3332         (bufferCapacityField         == NULL)) {
3333       directBufferSupportInitializeFailed = 1;
3334       return false;
3335     }
3336 
3337     directBufferSupportInitializeEnded = 1;
3338   } else {
3339     while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
3340       // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
3341       // os::sleep which requires the VM state transition. On other platforms, it
3342       // is not necessary. The following call to change the VM state is purposely
3343       // put inside the loop to avoid potential deadlock when multiple threads
3344       // try to call this method. See 6791815 for more details.
3345       ThreadInVMfromNative tivn(thread);
3346       os::yield_all();
3347     }
3348   }
3349 
3350   return !directBufferSupportInitializeFailed;
3351 }
3352 
3353 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
3354 {
3355   // thread_from_jni_environment() will block if VM is gone.
3356   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3357 
3358   JNIWrapper("jni_NewDirectByteBuffer");
3359  HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(env, address, capacity);
3360 
3361   if (!directBufferSupportInitializeEnded) {
3362     if (!initializeDirectBufferSupport(env, thread)) {
3363       HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(NULL);
3364       return NULL;
3365     }
3366   }
3367 
3368   // Being paranoid about accidental sign extension on address
3369   jlong addr = (jlong) ((uintptr_t) address);
3370   // NOTE that package-private DirectByteBuffer constructor currently
3371   // takes int capacity
3372   jint  cap  = (jint)  capacity;
3373   jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
3374   HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(ret);
3375   return ret;
3376 }
3377 
3378 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
3379                     , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
3380 
3381 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
3382 {
3383   // thread_from_jni_environment() will block if VM is gone.
3384   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3385 
3386   JNIWrapper("jni_GetDirectBufferAddress");
3387   HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(env, buf);
3388   void* ret = NULL;
3389   DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
3390 
3391   if (!directBufferSupportInitializeEnded) {
3392     if (!initializeDirectBufferSupport(env, thread)) {
3393       return 0;
3394     }
3395   }
3396 
3397   if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
3398     return 0;
3399   }
3400 
3401   ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
3402   return ret;
3403 }
3404 
3405 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
3406                     , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
3407 
3408 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
3409 {
3410   // thread_from_jni_environment() will block if VM is gone.
3411   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3412 
3413   JNIWrapper("jni_GetDirectBufferCapacity");
3414   HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(env, buf);
3415   jlong ret = -1;
3416   DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
3417 
3418   if (!directBufferSupportInitializeEnded) {
3419     if (!initializeDirectBufferSupport(env, thread)) {
3420       ret = 0;
3421       return ret;
3422     }
3423   }
3424 
3425   if (buf == NULL) {
3426     return -1;
3427   }
3428 
3429   if (!env->IsInstanceOf(buf, directBufferClass)) {
3430     return -1;
3431   }
3432 
3433   // NOTE that capacity is currently an int in the implementation
3434   ret = env->GetIntField(buf, bufferCapacityField);
3435   return ret;
3436 }
3437 
3438 
3439 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
3440   JNIWrapper("GetVersion");
3441   HOTSPOT_JNI_GETVERSION_ENTRY(env);
3442   HOTSPOT_JNI_GETVERSION_RETURN(CurrentVersion);
3443   return CurrentVersion;
3444 JNI_END
3445 
3446 extern struct JavaVM_ main_vm;
3447 
3448 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
3449   JNIWrapper("jni_GetJavaVM");
3450   HOTSPOT_JNI_GETJAVAVM_ENTRY(env, (void **) vm);
3451   *vm  = (JavaVM *)(&main_vm);
3452   HOTSPOT_JNI_GETJAVAVM_RETURN(JNI_OK);
3453   return JNI_OK;
3454 JNI_END
3455 
3456 // Structure containing all jni functions
3457 struct JNINativeInterface_ jni_NativeInterface = {
3458     NULL,
3459     NULL,
3460     NULL,
3461 
3462     NULL,
3463 
3464     jni_GetVersion,
3465 
3466     jni_DefineClass,
3467     jni_FindClass,
3468 
3469     jni_FromReflectedMethod,
3470     jni_FromReflectedField,
3471 
3472     jni_ToReflectedMethod,
3473 
3474     jni_GetSuperclass,
3475     jni_IsAssignableFrom,
3476 
3477     jni_ToReflectedField,
3478 
3479     jni_Throw,
3480     jni_ThrowNew,
3481     jni_ExceptionOccurred,
3482     jni_ExceptionDescribe,
3483     jni_ExceptionClear,
3484     jni_FatalError,
3485 
3486     jni_PushLocalFrame,
3487     jni_PopLocalFrame,
3488 
3489     jni_NewGlobalRef,
3490     jni_DeleteGlobalRef,
3491     jni_DeleteLocalRef,
3492     jni_IsSameObject,
3493 
3494     jni_NewLocalRef,
3495     jni_EnsureLocalCapacity,
3496 
3497     jni_AllocObject,
3498     jni_NewObject,
3499     jni_NewObjectV,
3500     jni_NewObjectA,
3501 
3502     jni_GetObjectClass,
3503     jni_IsInstanceOf,
3504 
3505     jni_GetMethodID,
3506 
3507     jni_CallObjectMethod,
3508     jni_CallObjectMethodV,
3509     jni_CallObjectMethodA,
3510     jni_CallBooleanMethod,
3511     jni_CallBooleanMethodV,
3512     jni_CallBooleanMethodA,
3513     jni_CallByteMethod,
3514     jni_CallByteMethodV,
3515     jni_CallByteMethodA,
3516     jni_CallCharMethod,
3517     jni_CallCharMethodV,
3518     jni_CallCharMethodA,
3519     jni_CallShortMethod,
3520     jni_CallShortMethodV,
3521     jni_CallShortMethodA,
3522     jni_CallIntMethod,
3523     jni_CallIntMethodV,
3524     jni_CallIntMethodA,
3525     jni_CallLongMethod,
3526     jni_CallLongMethodV,
3527     jni_CallLongMethodA,
3528     jni_CallFloatMethod,
3529     jni_CallFloatMethodV,
3530     jni_CallFloatMethodA,
3531     jni_CallDoubleMethod,
3532     jni_CallDoubleMethodV,
3533     jni_CallDoubleMethodA,
3534     jni_CallVoidMethod,
3535     jni_CallVoidMethodV,
3536     jni_CallVoidMethodA,
3537 
3538     jni_CallNonvirtualObjectMethod,
3539     jni_CallNonvirtualObjectMethodV,
3540     jni_CallNonvirtualObjectMethodA,
3541     jni_CallNonvirtualBooleanMethod,
3542     jni_CallNonvirtualBooleanMethodV,
3543     jni_CallNonvirtualBooleanMethodA,
3544     jni_CallNonvirtualByteMethod,
3545     jni_CallNonvirtualByteMethodV,
3546     jni_CallNonvirtualByteMethodA,
3547     jni_CallNonvirtualCharMethod,
3548     jni_CallNonvirtualCharMethodV,
3549     jni_CallNonvirtualCharMethodA,
3550     jni_CallNonvirtualShortMethod,
3551     jni_CallNonvirtualShortMethodV,
3552     jni_CallNonvirtualShortMethodA,
3553     jni_CallNonvirtualIntMethod,
3554     jni_CallNonvirtualIntMethodV,
3555     jni_CallNonvirtualIntMethodA,
3556     jni_CallNonvirtualLongMethod,
3557     jni_CallNonvirtualLongMethodV,
3558     jni_CallNonvirtualLongMethodA,
3559     jni_CallNonvirtualFloatMethod,
3560     jni_CallNonvirtualFloatMethodV,
3561     jni_CallNonvirtualFloatMethodA,
3562     jni_CallNonvirtualDoubleMethod,
3563     jni_CallNonvirtualDoubleMethodV,
3564     jni_CallNonvirtualDoubleMethodA,
3565     jni_CallNonvirtualVoidMethod,
3566     jni_CallNonvirtualVoidMethodV,
3567     jni_CallNonvirtualVoidMethodA,
3568 
3569     jni_GetFieldID,
3570 
3571     jni_GetObjectField,
3572     jni_GetBooleanField,
3573     jni_GetByteField,
3574     jni_GetCharField,
3575     jni_GetShortField,
3576     jni_GetIntField,
3577     jni_GetLongField,
3578     jni_GetFloatField,
3579     jni_GetDoubleField,
3580 
3581     jni_SetObjectField,
3582     jni_SetBooleanField,
3583     jni_SetByteField,
3584     jni_SetCharField,
3585     jni_SetShortField,
3586     jni_SetIntField,
3587     jni_SetLongField,
3588     jni_SetFloatField,
3589     jni_SetDoubleField,
3590 
3591     jni_GetStaticMethodID,
3592 
3593     jni_CallStaticObjectMethod,
3594     jni_CallStaticObjectMethodV,
3595     jni_CallStaticObjectMethodA,
3596     jni_CallStaticBooleanMethod,
3597     jni_CallStaticBooleanMethodV,
3598     jni_CallStaticBooleanMethodA,
3599     jni_CallStaticByteMethod,
3600     jni_CallStaticByteMethodV,
3601     jni_CallStaticByteMethodA,
3602     jni_CallStaticCharMethod,
3603     jni_CallStaticCharMethodV,
3604     jni_CallStaticCharMethodA,
3605     jni_CallStaticShortMethod,
3606     jni_CallStaticShortMethodV,
3607     jni_CallStaticShortMethodA,
3608     jni_CallStaticIntMethod,
3609     jni_CallStaticIntMethodV,
3610     jni_CallStaticIntMethodA,
3611     jni_CallStaticLongMethod,
3612     jni_CallStaticLongMethodV,
3613     jni_CallStaticLongMethodA,
3614     jni_CallStaticFloatMethod,
3615     jni_CallStaticFloatMethodV,
3616     jni_CallStaticFloatMethodA,
3617     jni_CallStaticDoubleMethod,
3618     jni_CallStaticDoubleMethodV,
3619     jni_CallStaticDoubleMethodA,
3620     jni_CallStaticVoidMethod,
3621     jni_CallStaticVoidMethodV,
3622     jni_CallStaticVoidMethodA,
3623 
3624     jni_GetStaticFieldID,
3625 
3626     jni_GetStaticObjectField,
3627     jni_GetStaticBooleanField,
3628     jni_GetStaticByteField,
3629     jni_GetStaticCharField,
3630     jni_GetStaticShortField,
3631     jni_GetStaticIntField,
3632     jni_GetStaticLongField,
3633     jni_GetStaticFloatField,
3634     jni_GetStaticDoubleField,
3635 
3636     jni_SetStaticObjectField,
3637     jni_SetStaticBooleanField,
3638     jni_SetStaticByteField,
3639     jni_SetStaticCharField,
3640     jni_SetStaticShortField,
3641     jni_SetStaticIntField,
3642     jni_SetStaticLongField,
3643     jni_SetStaticFloatField,
3644     jni_SetStaticDoubleField,
3645 
3646     jni_NewString,
3647     jni_GetStringLength,
3648     jni_GetStringChars,
3649     jni_ReleaseStringChars,
3650 
3651     jni_NewStringUTF,
3652     jni_GetStringUTFLength,
3653     jni_GetStringUTFChars,
3654     jni_ReleaseStringUTFChars,
3655 
3656     jni_GetArrayLength,
3657 
3658     jni_NewObjectArray,
3659     jni_GetObjectArrayElement,
3660     jni_SetObjectArrayElement,
3661 
3662     jni_NewBooleanArray,
3663     jni_NewByteArray,
3664     jni_NewCharArray,
3665     jni_NewShortArray,
3666     jni_NewIntArray,
3667     jni_NewLongArray,
3668     jni_NewFloatArray,
3669     jni_NewDoubleArray,
3670 
3671     jni_GetBooleanArrayElements,
3672     jni_GetByteArrayElements,
3673     jni_GetCharArrayElements,
3674     jni_GetShortArrayElements,
3675     jni_GetIntArrayElements,
3676     jni_GetLongArrayElements,
3677     jni_GetFloatArrayElements,
3678     jni_GetDoubleArrayElements,
3679 
3680     jni_ReleaseBooleanArrayElements,
3681     jni_ReleaseByteArrayElements,
3682     jni_ReleaseCharArrayElements,
3683     jni_ReleaseShortArrayElements,
3684     jni_ReleaseIntArrayElements,
3685     jni_ReleaseLongArrayElements,
3686     jni_ReleaseFloatArrayElements,
3687     jni_ReleaseDoubleArrayElements,
3688 
3689     jni_GetBooleanArrayRegion,
3690     jni_GetByteArrayRegion,
3691     jni_GetCharArrayRegion,
3692     jni_GetShortArrayRegion,
3693     jni_GetIntArrayRegion,
3694     jni_GetLongArrayRegion,
3695     jni_GetFloatArrayRegion,
3696     jni_GetDoubleArrayRegion,
3697 
3698     jni_SetBooleanArrayRegion,
3699     jni_SetByteArrayRegion,
3700     jni_SetCharArrayRegion,
3701     jni_SetShortArrayRegion,
3702     jni_SetIntArrayRegion,
3703     jni_SetLongArrayRegion,
3704     jni_SetFloatArrayRegion,
3705     jni_SetDoubleArrayRegion,
3706 
3707     jni_RegisterNatives,
3708     jni_UnregisterNatives,
3709 
3710     jni_MonitorEnter,
3711     jni_MonitorExit,
3712 
3713     jni_GetJavaVM,
3714 
3715     jni_GetStringRegion,
3716     jni_GetStringUTFRegion,
3717 
3718     jni_GetPrimitiveArrayCritical,
3719     jni_ReleasePrimitiveArrayCritical,
3720 
3721     jni_GetStringCritical,
3722     jni_ReleaseStringCritical,
3723 
3724     jni_NewWeakGlobalRef,
3725     jni_DeleteWeakGlobalRef,
3726 
3727     jni_ExceptionCheck,
3728 
3729     jni_NewDirectByteBuffer,
3730     jni_GetDirectBufferAddress,
3731     jni_GetDirectBufferCapacity,
3732 
3733     // New 1_6 features
3734 
3735     jni_GetObjectRefType
3736 };
3737 
3738 
3739 // For jvmti use to modify jni function table.
3740 // Java threads in native contiues to run until it is transitioned
3741 // to VM at safepoint. Before the transition or before it is blocked
3742 // for safepoint it may access jni function table. VM could crash if
3743 // any java thread access the jni function table in the middle of memcpy.
3744 // To avoid this each function pointers are copied automically.
3745 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
3746   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
3747   intptr_t *a = (intptr_t *) jni_functions();
3748   intptr_t *b = (intptr_t *) new_jni_NativeInterface;
3749   for (uint i=0; i <  sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
3750     Atomic::store_ptr(*b++, a++);
3751   }
3752 }
3753 
3754 void quicken_jni_functions() {
3755   // Replace Get<Primitive>Field with fast versions
3756   if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
3757       && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
3758 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
3759       // windows x86 currently needs SEH wrapper and the gain of the fast
3760       // versions currently isn't certain for server vm on uniprocessor.
3761       && os::is_MP()
3762 #endif
3763   ) {
3764     address func;
3765     func = JNI_FastGetField::generate_fast_get_boolean_field();
3766     if (func != (address)-1) {
3767       jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
3768     }
3769     func = JNI_FastGetField::generate_fast_get_byte_field();
3770     if (func != (address)-1) {
3771       jni_NativeInterface.GetByteField = (GetByteField_t)func;
3772     }
3773     func = JNI_FastGetField::generate_fast_get_char_field();
3774     if (func != (address)-1) {
3775       jni_NativeInterface.GetCharField = (GetCharField_t)func;
3776     }
3777     func = JNI_FastGetField::generate_fast_get_short_field();
3778     if (func != (address)-1) {
3779       jni_NativeInterface.GetShortField = (GetShortField_t)func;
3780     }
3781     func = JNI_FastGetField::generate_fast_get_int_field();
3782     if (func != (address)-1) {
3783       jni_NativeInterface.GetIntField = (GetIntField_t)func;
3784     }
3785     func = JNI_FastGetField::generate_fast_get_long_field();
3786     if (func != (address)-1) {
3787       jni_NativeInterface.GetLongField = (GetLongField_t)func;
3788     }
3789     func = JNI_FastGetField::generate_fast_get_float_field();
3790     if (func != (address)-1) {
3791       jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
3792     }
3793     func = JNI_FastGetField::generate_fast_get_double_field();
3794     if (func != (address)-1) {
3795       jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
3796     }
3797   }
3798 }
3799 
3800 // Returns the function structure
3801 struct JNINativeInterface_* jni_functions() {
3802 #if INCLUDE_JNI_CHECK
3803   if (CheckJNICalls) return jni_functions_check();
3804 #endif // INCLUDE_JNI_CHECK
3805   return &jni_NativeInterface;
3806 }
3807 
3808 // Returns the function structure
3809 struct JNINativeInterface_* jni_functions_nocheck() {
3810   return &jni_NativeInterface;
3811 }
3812 
3813 
3814 // Invocation API
3815 
3816 
3817 // Forward declaration
3818 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
3819 
3820 // Global invocation API vars
3821 volatile jint vm_created = 0;
3822 // Indicate whether it is safe to recreate VM
3823 volatile jint safe_to_recreate_vm = 1;
3824 struct JavaVM_ main_vm = {&jni_InvokeInterface};
3825 
3826 
3827 #define JAVASTACKSIZE (400 * 1024)    /* Default size of a thread java stack */
3828 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
3829 
3830 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
3831                     , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
3832 
3833 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
3834   HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(args_);
3835   JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
3836   jint ret = JNI_ERR;
3837   DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
3838 
3839   if (Threads::is_supported_jni_version(args->version)) {
3840     ret = JNI_OK;
3841   }
3842   // 1.1 style no longer supported in hotspot.
3843   // According the JNI spec, we should update args->version on return.
3844   // We also use the structure to communicate with launcher about default
3845   // stack size.
3846   if (args->version == JNI_VERSION_1_1) {
3847     args->version = JNI_VERSION_1_2;
3848     // javaStackSize is int in arguments structure
3849     assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
3850     args->javaStackSize = (jint)(ThreadStackSize * K);
3851   }
3852   return ret;
3853 }
3854 
3855 #ifndef PRODUCT
3856 
3857 #include "gc_implementation/shared/gcTimer.hpp"
3858 #include "gc_interface/collectedHeap.hpp"
3859 #if INCLUDE_ALL_GCS
3860 #include "gc_implementation/g1/heapRegionRemSet.hpp"
3861 #endif
3862 #include "utilities/quickSort.hpp"
3863 #include "utilities/ostream.hpp"
3864 #if INCLUDE_VM_STRUCTS
3865 #include "runtime/vmStructs.hpp"
3866 #endif
3867 
3868 #define run_unit_test(unit_test_function_call)              \
3869   tty->print_cr("Running test: " #unit_test_function_call); \
3870   unit_test_function_call
3871 
3872 // Forward declaration
3873 void TestReservedSpace_test();
3874 void TestReserveMemorySpecial_test();
3875 void TestVirtualSpace_test();
3876 void TestMetaspaceAux_test();
3877 void TestMetachunk_test();
3878 void TestVirtualSpaceNode_test();
3879 void TestNewSize_test();
3880 void TestKlass_test();
3881 #if INCLUDE_ALL_GCS
3882 void TestOldFreeSpaceCalculation_test();
3883 void TestG1BiasedArray_test();
3884 void TestBufferingOopClosure_test();
3885 void TestCodeCacheRemSet_test();
3886 #endif
3887 
3888 void execute_internal_vm_tests() {
3889   if (ExecuteInternalVMTests) {
3890     tty->print_cr("Running internal VM tests");
3891     run_unit_test(TestReservedSpace_test());
3892     run_unit_test(TestReserveMemorySpecial_test());
3893     run_unit_test(TestVirtualSpace_test());
3894     run_unit_test(TestMetaspaceAux_test());
3895     run_unit_test(TestMetachunk_test());
3896     run_unit_test(TestVirtualSpaceNode_test());
3897     run_unit_test(GlobalDefinitions::test_globals());
3898     run_unit_test(GCTimerAllTest::all());
3899     run_unit_test(arrayOopDesc::test_max_array_length());
3900     run_unit_test(CollectedHeap::test_is_in());
3901     run_unit_test(QuickSort::test_quick_sort());
3902     run_unit_test(AltHashing::test_alt_hash());
3903     run_unit_test(test_loggc_filename());
3904     run_unit_test(TestNewSize_test());
3905     run_unit_test(TestKlass_test());
3906 #if INCLUDE_VM_STRUCTS
3907     run_unit_test(VMStructs::test());
3908 #endif
3909 #if INCLUDE_ALL_GCS
3910     run_unit_test(TestOldFreeSpaceCalculation_test());
3911     run_unit_test(TestG1BiasedArray_test());
3912     run_unit_test(HeapRegionRemSet::test_prt());
3913     run_unit_test(TestBufferingOopClosure_test());
3914     run_unit_test(TestCodeCacheRemSet_test());
3915 #endif
3916     tty->print_cr("All internal VM tests passed");
3917   }
3918 }
3919 
3920 #undef run_unit_test
3921 
3922 #endif
3923 
3924 DT_RETURN_MARK_DECL(CreateJavaVM, jint
3925                     , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
3926 
3927 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
3928   HOTSPOT_JNI_CREATEJAVAVM_ENTRY((void **) vm, penv, args);
3929 
3930   jint result = JNI_ERR;
3931   DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
3932 
3933   // We're about to use Atomic::xchg for synchronization.  Some Zero
3934   // platforms use the GCC builtin __sync_lock_test_and_set for this,
3935   // but __sync_lock_test_and_set is not guaranteed to do what we want
3936   // on all architectures.  So we check it works before relying on it.
3937 #if defined(ZERO) && defined(ASSERT)
3938   {
3939     jint a = 0xcafebabe;
3940     jint b = Atomic::xchg(0xdeadbeef, &a);
3941     void *c = &a;
3942     void *d = Atomic::xchg_ptr(&b, &c);
3943     assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
3944     assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
3945   }
3946 #endif // ZERO && ASSERT
3947 
3948   // At the moment it's only possible to have one Java VM,
3949   // since some of the runtime state is in global variables.
3950 
3951   // We cannot use our mutex locks here, since they only work on
3952   // Threads. We do an atomic compare and exchange to ensure only
3953   // one thread can call this method at a time
3954 
3955   // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
3956   // the add/dec implementations are dependent on whether we are running
3957   // on a multiprocessor, and at this stage of initialization the os::is_MP
3958   // function used to determine this will always return false. Atomic::xchg
3959   // does not have this problem.
3960   if (Atomic::xchg(1, &vm_created) == 1) {
3961     return JNI_EEXIST;   // already created, or create attempt in progress
3962   }
3963   if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
3964     return JNI_ERR;  // someone tried and failed and retry not allowed.
3965   }
3966 
3967   assert(vm_created == 1, "vm_created is true during the creation");
3968 
3969   /**
3970    * Certain errors during initialization are recoverable and do not
3971    * prevent this method from being called again at a later time
3972    * (perhaps with different arguments).  However, at a certain
3973    * point during initialization if an error occurs we cannot allow
3974    * this function to be called again (or it will crash).  In those
3975    * situations, the 'canTryAgain' flag is set to false, which atomically
3976    * sets safe_to_recreate_vm to 1, such that any new call to
3977    * JNI_CreateJavaVM will immediately fail using the above logic.
3978    */
3979   bool can_try_again = true;
3980 
3981   result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
3982   if (result == JNI_OK) {
3983     JavaThread *thread = JavaThread::current();
3984     assert(!thread->has_pending_exception(), "should have returned not OK");
3985     /* thread is thread_in_vm here */
3986     *vm = (JavaVM *)(&main_vm);
3987     *(JNIEnv**)penv = thread->jni_environment();
3988 
3989     // Tracks the time application was running before GC
3990     RuntimeService::record_application_start();
3991 
3992     // Notify JVMTI
3993     if (JvmtiExport::should_post_thread_life()) {
3994        JvmtiExport::post_thread_start(thread);
3995     }
3996 
3997     EventThreadStart event;
3998     if (event.should_commit()) {
3999       event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
4000       event.commit();
4001     }
4002 
4003 #ifndef PRODUCT
4004   #ifndef TARGET_OS_FAMILY_windows
4005     #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()
4006   #endif
4007 
4008     // Check if we should compile all classes on bootclasspath
4009     if (CompileTheWorld) ClassLoader::compile_the_world();
4010     if (ReplayCompiles) ciReplay::replay(thread);
4011 
4012     // Some platforms (like Win*) need a wrapper around these test
4013     // functions in order to properly handle error conditions.
4014     CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);
4015     CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);
4016 #endif
4017 
4018     // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
4019     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
4020   } else {
4021     // If create_vm exits because of a pending exception, exit with that
4022     // exception.  In the future when we figure out how to reclaim memory,
4023     // we may be able to exit with JNI_ERR and allow the calling application
4024     // to continue.
4025     if (Universe::is_fully_initialized()) {
4026       // otherwise no pending exception possible - VM will already have aborted
4027       JavaThread* THREAD = JavaThread::current();
4028       if (HAS_PENDING_EXCEPTION) {
4029         HandleMark hm;
4030         vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION));
4031       }
4032     }
4033 
4034     if (can_try_again) {
4035       // reset safe_to_recreate_vm to 1 so that retrial would be possible
4036       safe_to_recreate_vm = 1;
4037     }
4038 
4039     // Creation failed. We must reset vm_created
4040     *vm = 0;
4041     *(JNIEnv**)penv = 0;
4042     // reset vm_created last to avoid race condition. Use OrderAccess to
4043     // control both compiler and architectural-based reordering.
4044     OrderAccess::release_store(&vm_created, 0);
4045   }
4046 
4047   return result;
4048 }
4049 
4050 
4051 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
4052   // See bug 4367188, the wrapper can sometimes cause VM crashes
4053   // JNIWrapper("GetCreatedJavaVMs");
4054 
4055   HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY((void **) vm_buf, bufLen, (uintptr_t *) numVMs);
4056 
4057   if (vm_created) {
4058     if (numVMs != NULL) *numVMs = 1;
4059     if (bufLen > 0)     *vm_buf = (JavaVM *)(&main_vm);
4060   } else {
4061     if (numVMs != NULL) *numVMs = 0;
4062   }
4063   HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(JNI_OK);
4064   return JNI_OK;
4065 }
4066 
4067 extern "C" {
4068 
4069 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
4070                     , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
4071 
4072 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
4073   HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(vm);
4074   jint res = JNI_ERR;
4075   DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
4076 
4077   if (!vm_created) {
4078     res = JNI_ERR;
4079     return res;
4080   }
4081 
4082   JNIWrapper("DestroyJavaVM");
4083   JNIEnv *env;
4084   JavaVMAttachArgs destroyargs;
4085   destroyargs.version = CurrentVersion;
4086   destroyargs.name = (char *)"DestroyJavaVM";
4087   destroyargs.group = NULL;
4088   res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
4089   if (res != JNI_OK) {
4090     return res;
4091   }
4092 
4093   // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
4094   JavaThread* thread = JavaThread::current();
4095   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
4096   if (Threads::destroy_vm()) {
4097     // Should not change thread state, VM is gone
4098     vm_created = false;
4099     res = JNI_OK;
4100     return res;
4101   } else {
4102     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
4103     res = JNI_ERR;
4104     return res;
4105   }
4106 }
4107 
4108 
4109 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
4110   JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
4111 
4112   // Check below commented out from JDK1.2fcs as well
4113   /*
4114   if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
4115     return JNI_EVERSION;
4116   }
4117   */
4118 
4119   Thread* t = ThreadLocalStorage::get_thread_slow();
4120   if (t != NULL) {
4121     // If the thread has been attached this operation is a no-op
4122     *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
4123     return JNI_OK;
4124   }
4125 
4126   // Create a thread and mark it as attaching so it will be skipped by the
4127   // ThreadsListEnumerator - see CR 6404306
4128   JavaThread* thread = new JavaThread(true);
4129 
4130   // Set correct safepoint info. The thread is going to call into Java when
4131   // initializing the Java level thread object. Hence, the correct state must
4132   // be set in order for the Safepoint code to deal with it correctly.
4133   thread->set_thread_state(_thread_in_vm);
4134   // Must do this before initialize_thread_local_storage
4135   thread->record_stack_base_and_size();
4136 
4137   thread->initialize_thread_local_storage();
4138 
4139   if (!os::create_attached_thread(thread)) {
4140     delete thread;
4141     return JNI_ERR;
4142   }
4143   // Enable stack overflow checks
4144   thread->create_stack_guard_pages();
4145 
4146   thread->initialize_tlab();
4147 
4148   thread->cache_global_variables();
4149 
4150   // Crucial that we do not have a safepoint check for this thread, since it has
4151   // not been added to the Thread list yet.
4152   { Threads_lock->lock_without_safepoint_check();
4153     // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
4154     // avoid this thread trying to do a GC before it is added to the thread-list
4155     thread->set_active_handles(JNIHandleBlock::allocate_block());
4156     Threads::add(thread, daemon);
4157     Threads_lock->unlock();
4158   }
4159   // Create thread group and name info from attach arguments
4160   oop group = NULL;
4161   char* thread_name = NULL;
4162   if (args != NULL && Threads::is_supported_jni_version(args->version)) {
4163     group = JNIHandles::resolve(args->group);
4164     thread_name = args->name; // may be NULL
4165   }
4166   if (group == NULL) group = Universe::main_thread_group();
4167 
4168   // Create Java level thread object and attach it to this thread
4169   bool attach_failed = false;
4170   {
4171     EXCEPTION_MARK;
4172     HandleMark hm(THREAD);
4173     Handle thread_group(THREAD, group);
4174     thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
4175     if (HAS_PENDING_EXCEPTION) {
4176       CLEAR_PENDING_EXCEPTION;
4177       // cleanup outside the handle mark.
4178       attach_failed = true;
4179     }
4180   }
4181 
4182   if (attach_failed) {
4183     // Added missing cleanup
4184     thread->cleanup_failed_attach_current_thread();
4185     return JNI_ERR;
4186   }
4187 
4188   // mark the thread as no longer attaching
4189   // this uses a fence to push the change through so we don't have
4190   // to regrab the threads_lock
4191   thread->set_done_attaching_via_jni();
4192 
4193   // Set java thread status.
4194   java_lang_Thread::set_thread_status(thread->threadObj(),
4195               java_lang_Thread::RUNNABLE);
4196 
4197   // Notify the debugger
4198   if (JvmtiExport::should_post_thread_life()) {
4199     JvmtiExport::post_thread_start(thread);
4200   }
4201 
4202   EventThreadStart event;
4203   if (event.should_commit()) {
4204     event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
4205     event.commit();
4206   }
4207 
4208   *(JNIEnv**)penv = thread->jni_environment();
4209 
4210   // Now leaving the VM, so change thread_state. This is normally automatically taken care
4211   // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
4212   // using ThreadStateTransition::transition, we do a callback to the safepoint code if
4213   // needed.
4214 
4215   ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
4216 
4217   // Perform any platform dependent FPU setup
4218   os::setup_fpu();
4219 
4220   return JNI_OK;
4221 }
4222 
4223 
4224 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
4225   HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(vm, penv, _args);
4226   if (!vm_created) {
4227   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
4228     return JNI_ERR;
4229   }
4230 
4231   JNIWrapper("AttachCurrentThread");
4232   jint ret = attach_current_thread(vm, penv, _args, false);
4233   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(ret);
4234   return ret;
4235 }
4236 
4237 
4238 jint JNICALL jni_DetachCurrentThread(JavaVM *vm)  {
4239   HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(vm);
4240   VM_Exit::block_if_vm_exited();
4241 
4242   JNIWrapper("DetachCurrentThread");
4243 
4244   // If the thread has been deattacted the operations is a no-op
4245   if (ThreadLocalStorage::thread() == NULL) {
4246   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
4247     return JNI_OK;
4248   }
4249 
4250   JavaThread* thread = JavaThread::current();
4251   if (thread->has_last_Java_frame()) {
4252   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
4253     // Can't detach a thread that's running java, that can't work.
4254     return JNI_ERR;
4255   }
4256 
4257   // Safepoint support. Have to do call-back to safepoint code, if in the
4258   // middel of a safepoint operation
4259   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
4260 
4261   // XXX: Note that JavaThread::exit() call below removes the guards on the
4262   // stack pages set up via enable_stack_{red,yellow}_zone() calls
4263   // above in jni_AttachCurrentThread. Unfortunately, while the setting
4264   // of the guards is visible in jni_AttachCurrentThread above,
4265   // the removal of the guards is buried below in JavaThread::exit()
4266   // here. The abstraction should be more symmetrically either exposed
4267   // or hidden (e.g. it could probably be hidden in the same
4268   // (platform-dependent) methods where we do alternate stack
4269   // maintenance work?)
4270   thread->exit(false, JavaThread::jni_detach);
4271   delete thread;
4272 
4273   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
4274   return JNI_OK;
4275 }
4276 
4277 DT_RETURN_MARK_DECL(GetEnv, jint
4278                     , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
4279 
4280 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
4281   HOTSPOT_JNI_GETENV_ENTRY(vm, penv, version);
4282   jint ret = JNI_ERR;
4283   DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
4284 
4285   if (!vm_created) {
4286     *penv = NULL;
4287     ret = JNI_EDETACHED;
4288     return ret;
4289   }
4290 
4291   if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
4292     return ret;
4293   }
4294 
4295 #ifndef JVMPI_VERSION_1
4296 // need these in order to be polite about older agents
4297 #define JVMPI_VERSION_1   ((jint)0x10000001)
4298 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
4299 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
4300 #endif // !JVMPI_VERSION_1
4301 
4302   Thread* thread = ThreadLocalStorage::thread();
4303   if (thread != NULL && thread->is_Java_thread()) {
4304     if (Threads::is_supported_jni_version_including_1_1(version)) {
4305       *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
4306       ret = JNI_OK;
4307       return ret;
4308 
4309     } else if (version == JVMPI_VERSION_1 ||
4310                version == JVMPI_VERSION_1_1 ||
4311                version == JVMPI_VERSION_1_2) {
4312       tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
4313       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
4314       ret = JNI_EVERSION;
4315       return ret;
4316     } else if (JvmtiExport::is_jvmdi_version(version)) {
4317       tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
4318       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
4319       ret = JNI_EVERSION;
4320       return ret;
4321     } else {
4322       *penv = NULL;
4323       ret = JNI_EVERSION;
4324       return ret;
4325     }
4326   } else {
4327     *penv = NULL;
4328     ret = JNI_EDETACHED;
4329     return ret;
4330   }
4331 }
4332 
4333 
4334 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
4335   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(vm, penv, _args);
4336   if (!vm_created) {
4337   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN((uint32_t) JNI_ERR);
4338     return JNI_ERR;
4339   }
4340 
4341   JNIWrapper("AttachCurrentThreadAsDaemon");
4342   jint ret = attach_current_thread(vm, penv, _args, true);
4343   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(ret);
4344   return ret;
4345 }
4346 
4347 
4348 } // End extern "C"
4349 
4350 const struct JNIInvokeInterface_ jni_InvokeInterface = {
4351     NULL,
4352     NULL,
4353     NULL,
4354 
4355     jni_DestroyJavaVM,
4356     jni_AttachCurrentThread,
4357     jni_DetachCurrentThread,
4358     jni_GetEnv,
4359     jni_AttachCurrentThreadAsDaemon
4360 };