1 /*
   2  * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2012 Red Hat, Inc.
   4  * Copyright (c) 2021, Azul Systems, Inc. All rights reserved.
   5  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   6  *
   7  * This code is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License version 2 only, as
   9  * published by the Free Software Foundation.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  *
  25  */
  26 
  27 #include "precompiled.hpp"
  28 #include "jni.h"
  29 #include "jvm.h"
  30 #include "ci/ciReplay.hpp"
  31 #include "classfile/altHashing.hpp"
  32 #include "classfile/classFileStream.hpp"
  33 #include "classfile/classLoader.hpp"
  34 #include "classfile/classLoadInfo.hpp"
  35 #include "classfile/javaClasses.hpp"
  36 #include "classfile/javaClasses.inline.hpp"
  37 #include "classfile/javaThreadStatus.hpp"
  38 #include "classfile/moduleEntry.hpp"
  39 #include "classfile/modules.hpp"
  40 #include "classfile/symbolTable.hpp"
  41 #include "classfile/systemDictionary.hpp"
  42 #include "classfile/vmClasses.hpp"
  43 #include "classfile/vmSymbols.hpp"
  44 #include "compiler/compiler_globals.hpp"
  45 #include "gc/shared/collectedHeap.hpp"
  46 #include "gc/shared/gcLocker.inline.hpp"
  47 #include "gc/shared/stringdedup/stringDedup.hpp"
  48 #include "interpreter/linkResolver.hpp"
  49 #include "jfr/jfrEvents.hpp"
  50 #include "jfr/support/jfrThreadId.hpp"
  51 #include "logging/log.hpp"
  52 #include "memory/allocation.hpp"
  53 #include "memory/allocation.inline.hpp"
  54 #include "memory/oopFactory.hpp"
  55 #include "memory/resourceArea.hpp"
  56 #include "memory/universe.hpp"
  57 #include "oops/access.inline.hpp"
  58 #include "oops/arrayOop.hpp"
  59 #include "oops/instanceKlass.inline.hpp"
  60 #include "oops/instanceOop.hpp"
  61 #include "oops/klass.inline.hpp"
  62 #include "oops/markWord.hpp"
  63 #include "oops/method.hpp"
  64 #include "oops/objArrayKlass.hpp"
  65 #include "oops/objArrayOop.inline.hpp"
  66 #include "oops/oop.inline.hpp"
  67 #include "oops/symbol.hpp"
  68 #include "oops/typeArrayKlass.hpp"
  69 #include "oops/typeArrayOop.inline.hpp"
  70 #include "prims/jniCheck.hpp"
  71 #include "prims/jniExport.hpp"
  72 #include "prims/jniFastGetField.hpp"
  73 #include "prims/jvm_misc.hpp"
  74 #include "prims/jvmtiExport.hpp"
  75 #include "prims/jvmtiThreadState.hpp"
  76 #include "runtime/atomic.hpp"
  77 #include "runtime/fieldDescriptor.inline.hpp"
  78 #include "runtime/handles.inline.hpp"
  79 #include "runtime/interfaceSupport.inline.hpp"
  80 #include "runtime/java.hpp"
  81 #include "runtime/javaCalls.hpp"
  82 #include "runtime/jfieldIDWorkaround.hpp"
  83 #include "runtime/jniHandles.inline.hpp"
  84 #include "runtime/reflection.hpp"
  85 #include "runtime/safepointVerifiers.hpp"
  86 #include "runtime/sharedRuntime.hpp"
  87 #include "runtime/signature.hpp"
  88 #include "runtime/thread.inline.hpp"
  89 #include "runtime/vmOperations.hpp"
  90 #include "services/memTracker.hpp"
  91 #include "services/runtimeService.hpp"
  92 #include "utilities/defaultStream.hpp"
  93 #include "utilities/dtrace.hpp"
  94 #include "utilities/events.hpp"
  95 #include "utilities/macros.hpp"
  96 #include "utilities/vmError.hpp"
  97 #if INCLUDE_JVMCI
  98 #include "jvmci/jvmciCompiler.hpp"
  99 #endif
 100 
 101 static jint CurrentVersion = JNI_VERSION_10;
 102 
 103 #if defined(_WIN32) && !defined(USE_VECTORED_EXCEPTION_HANDLING)
 104 extern LONG WINAPI topLevelExceptionFilter(_EXCEPTION_POINTERS* );
 105 #endif
 106 
 107 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
 108 // '-return' probe regardless of the return path is taken out of the function.
 109 // Methods that have multiple return paths use this to avoid having to
 110 // instrument each return path.  Methods that use CHECK or THROW must use this
 111 // since those macros can cause an immedate uninstrumented return.
 112 //
 113 // In order to get the return value, a reference to the variable containing
 114 // the return value must be passed to the contructor of the object, and
 115 // the return value must be set before return (since the mark object has
 116 // a reference to it).
 117 //
 118 // Example:
 119 // DT_RETURN_MARK_DECL(SomeFunc, int);
 120 // JNI_ENTRY(int, SomeFunc, ...)
 121 //   int return_value = 0;
 122 //   DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
 123 //   foo(CHECK_0)
 124 //   return_value = 5;
 125 //   return return_value;
 126 // JNI_END
 127 #define DT_RETURN_MARK_DECL(name, type, probe)                             \
 128   DTRACE_ONLY(                                                             \
 129     class DTraceReturnProbeMark_##name {                                   \
 130      public:                                                               \
 131       const type& _ret_ref;                                                \
 132       DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {}         \
 133       ~DTraceReturnProbeMark_##name() {                                    \
 134         probe;                                                             \
 135       }                                                                    \
 136     }                                                                      \
 137   )
 138 // Void functions are simpler since there's no return value
 139 #define DT_VOID_RETURN_MARK_DECL(name, probe)                              \
 140   DTRACE_ONLY(                                                             \
 141     class DTraceReturnProbeMark_##name {                                   \
 142      public:                                                               \
 143       ~DTraceReturnProbeMark_##name() {                                    \
 144         probe;                                                             \
 145       }                                                                    \
 146     }                                                                      \
 147   )
 148 
 149 // Place these macros in the function to mark the return.  Non-void
 150 // functions need the type and address of the return value.
 151 #define DT_RETURN_MARK(name, type, ref) \
 152   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
 153 #define DT_VOID_RETURN_MARK(name) \
 154   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
 155 
 156 
 157 // Use these to select distinct code for floating-point vs. non-floating point
 158 // situations.  Used from within common macros where we need slightly
 159 // different behavior for Float/Double
 160 #define FP_SELECT_Boolean(intcode, fpcode) intcode
 161 #define FP_SELECT_Byte(intcode, fpcode)    intcode
 162 #define FP_SELECT_Char(intcode, fpcode)    intcode
 163 #define FP_SELECT_Short(intcode, fpcode)   intcode
 164 #define FP_SELECT_Object(intcode, fpcode)  intcode
 165 #define FP_SELECT_Int(intcode, fpcode)     intcode
 166 #define FP_SELECT_Long(intcode, fpcode)    intcode
 167 #define FP_SELECT_Float(intcode, fpcode)   fpcode
 168 #define FP_SELECT_Double(intcode, fpcode)  fpcode
 169 #define FP_SELECT(TypeName, intcode, fpcode) \
 170   FP_SELECT_##TypeName(intcode, fpcode)
 171 
 172 // Choose DT_RETURN_MARK macros  based on the type: float/double -> void
 173 // (dtrace doesn't do FP yet)
 174 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe)    \
 175   FP_SELECT(TypeName, \
 176     DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
 177 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
 178   FP_SELECT(TypeName, \
 179     DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
 180 
 181 
 182 // out-of-line helpers for class jfieldIDWorkaround:
 183 
 184 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
 185   if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
 186     uintptr_t as_uint = (uintptr_t) id;
 187     intptr_t offset = raw_instance_offset(id);
 188     if (is_checked_jfieldID(id)) {
 189       if (!klass_hash_ok(k, id)) {
 190         return false;
 191       }
 192     }
 193     return InstanceKlass::cast(k)->contains_field_offset(offset);
 194   } else {
 195     JNIid* result = (JNIid*) id;
 196 #ifdef ASSERT
 197     return result != NULL && result->is_static_field_id();
 198 #else
 199     return result != NULL;
 200 #endif
 201   }
 202 }
 203 
 204 
 205 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
 206   if (offset <= small_offset_mask) {
 207     Klass* field_klass = k;
 208     Klass* super_klass = field_klass->super();
 209     // With compressed oops the most super class with nonstatic fields would
 210     // be the owner of fields embedded in the header.
 211     while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
 212            InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
 213       field_klass = super_klass;   // super contains the field also
 214       super_klass = field_klass->super();
 215     }
 216     debug_only(NoSafepointVerifier nosafepoint;)
 217     uintptr_t klass_hash = field_klass->identity_hash();
 218     return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
 219   } else {
 220 #if 0
 221     #ifndef PRODUCT
 222     {
 223       ResourceMark rm;
 224       warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
 225     }
 226     #endif
 227 #endif
 228     return 0;
 229   }
 230 }
 231 
 232 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
 233   uintptr_t as_uint = (uintptr_t) id;
 234   intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
 235   do {
 236     debug_only(NoSafepointVerifier nosafepoint;)
 237     // Could use a non-blocking query for identity_hash here...
 238     if ((k->identity_hash() & klass_mask) == klass_hash)
 239       return true;
 240     k = k->super();
 241   } while (k != NULL);
 242   return false;
 243 }
 244 
 245 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
 246   guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
 247   uintptr_t as_uint = (uintptr_t) id;
 248   intptr_t offset = raw_instance_offset(id);
 249   if (VerifyJNIFields) {
 250     if (is_checked_jfieldID(id)) {
 251       guarantee(klass_hash_ok(k, id),
 252     "Bug in native code: jfieldID class must match object");
 253     } else {
 254 #if 0
 255       #ifndef PRODUCT
 256       if (Verbose) {
 257   ResourceMark rm;
 258   warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
 259       }
 260       #endif
 261 #endif
 262     }
 263   }
 264   guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
 265       "Bug in native code: jfieldID offset must address interior of object");
 266 }
 267 
 268 // Implementation of JNI entries
 269 
 270 DT_RETURN_MARK_DECL(DefineClass, jclass
 271                     , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
 272 
 273 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
 274                                   const jbyte *buf, jsize bufLen))
 275   HOTSPOT_JNI_DEFINECLASS_ENTRY(
 276     env, (char*) name, loaderRef, (char*) buf, bufLen);
 277 
 278   jclass cls = NULL;
 279   DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
 280 
 281   // Class resolution will get the class name from the .class stream if the name is null.
 282   TempNewSymbol class_name = name == NULL ? NULL :
 283     SystemDictionary::class_name_symbol(name, vmSymbols::java_lang_NoClassDefFoundError(),
 284                                         CHECK_NULL);
 285 
 286   ResourceMark rm(THREAD);
 287   ClassFileStream st((u1*)buf, bufLen, NULL, ClassFileStream::verify);
 288   Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
 289   Handle protection_domain;
 290   ClassLoadInfo cl_info(protection_domain);
 291   Klass* k = SystemDictionary::resolve_from_stream(&st, class_name,
 292                                                    class_loader,
 293                                                    cl_info,
 294                                                    CHECK_NULL);
 295 
 296   if (log_is_enabled(Debug, class, resolve)) {
 297     trace_class_resolution(k);
 298   }
 299 
 300   cls = (jclass)JNIHandles::make_local(THREAD, k->java_mirror());
 301   return cls;
 302 JNI_END
 303 
 304 
 305 
 306 DT_RETURN_MARK_DECL(FindClass, jclass
 307                     , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
 308 
 309 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
 310   HOTSPOT_JNI_FINDCLASS_ENTRY(env, (char *)name);
 311 
 312   jclass result = NULL;
 313   DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
 314 
 315   // This should be ClassNotFoundException imo.
 316   TempNewSymbol class_name =
 317     SystemDictionary::class_name_symbol(name, vmSymbols::java_lang_NoClassDefFoundError(),
 318                                         CHECK_NULL);
 319 
 320   //%note jni_3
 321   Handle protection_domain;
 322   // Find calling class
 323   Klass* k = thread->security_get_caller_class(0);
 324   // default to the system loader when no context
 325   Handle loader(THREAD, SystemDictionary::java_system_loader());
 326   if (k != NULL) {
 327     // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
 328     // in the correct class context.
 329     if (k->class_loader() == NULL &&
 330         k->name() == vmSymbols::jdk_internal_loader_NativeLibraries()) {
 331       JavaValue result(T_OBJECT);
 332       JavaCalls::call_static(&result, k,
 333                              vmSymbols::getFromClass_name(),
 334                              vmSymbols::void_class_signature(),
 335                              CHECK_NULL);
 336       // When invoked from JNI_OnLoad, NativeLibraries::getFromClass returns
 337       // a non-NULL Class object.  When invoked from JNI_OnUnload,
 338       // it will return NULL to indicate no context.
 339       oop mirror = result.get_oop();
 340       if (mirror != NULL) {
 341         Klass* fromClass = java_lang_Class::as_Klass(mirror);
 342         loader = Handle(THREAD, fromClass->class_loader());
 343         protection_domain = Handle(THREAD, fromClass->protection_domain());
 344       }
 345     } else {
 346       loader = Handle(THREAD, k->class_loader());
 347     }
 348   }
 349 
 350   result = find_class_from_class_loader(env, class_name, true, loader,
 351                                         protection_domain, true, thread);
 352 
 353   if (log_is_enabled(Debug, class, resolve) && result != NULL) {
 354     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
 355   }
 356 
 357   return result;
 358 JNI_END
 359 
 360 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
 361                     , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
 362 
 363 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
 364   HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(env, method);
 365 
 366   jmethodID ret = NULL;
 367   DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
 368 
 369   // method is a handle to a java.lang.reflect.Method object
 370   oop reflected  = JNIHandles::resolve_non_null(method);
 371   oop mirror     = NULL;
 372   int slot       = 0;
 373 
 374   if (reflected->klass() == vmClasses::reflect_Constructor_klass()) {
 375     mirror = java_lang_reflect_Constructor::clazz(reflected);
 376     slot   = java_lang_reflect_Constructor::slot(reflected);
 377   } else {
 378     assert(reflected->klass() == vmClasses::reflect_Method_klass(), "wrong type");
 379     mirror = java_lang_reflect_Method::clazz(reflected);
 380     slot   = java_lang_reflect_Method::slot(reflected);
 381   }
 382   Klass* k1 = java_lang_Class::as_Klass(mirror);
 383 
 384   // Make sure class is initialized before handing id's out to methods
 385   k1->initialize(CHECK_NULL);
 386   Method* m = InstanceKlass::cast(k1)->method_with_idnum(slot);
 387   ret = m==NULL? NULL : m->jmethod_id();  // return NULL if reflected method deleted
 388   return ret;
 389 JNI_END
 390 
 391 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
 392                     , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
 393 
 394 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
 395   HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(env, field);
 396 
 397   jfieldID ret = NULL;
 398   DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
 399 
 400   // field is a handle to a java.lang.reflect.Field object
 401   oop reflected   = JNIHandles::resolve_non_null(field);
 402   oop mirror      = java_lang_reflect_Field::clazz(reflected);
 403   Klass* k1       = java_lang_Class::as_Klass(mirror);
 404   int slot        = java_lang_reflect_Field::slot(reflected);
 405   int modifiers   = java_lang_reflect_Field::modifiers(reflected);
 406 
 407   // Make sure class is initialized before handing id's out to fields
 408   k1->initialize(CHECK_NULL);
 409 
 410   // First check if this is a static field
 411   if (modifiers & JVM_ACC_STATIC) {
 412     intptr_t offset = InstanceKlass::cast(k1)->field_offset( slot );
 413     JNIid* id = InstanceKlass::cast(k1)->jni_id_for(offset);
 414     assert(id != NULL, "corrupt Field object");
 415     debug_only(id->set_is_static_field_id();)
 416     // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
 417     ret = jfieldIDWorkaround::to_static_jfieldID(id);
 418     return ret;
 419   }
 420 
 421   // The slot is the index of the field description in the field-array
 422   // The jfieldID is the offset of the field within the object
 423   // It may also have hash bits for k, if VerifyJNIFields is turned on.
 424   intptr_t offset = InstanceKlass::cast(k1)->field_offset( slot );
 425   assert(InstanceKlass::cast(k1)->contains_field_offset(offset), "stay within object");
 426   ret = jfieldIDWorkaround::to_instance_jfieldID(k1, offset);
 427   return ret;
 428 JNI_END
 429 
 430 
 431 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
 432                     , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
 433 
 434 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
 435   HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(env, cls, (uintptr_t) method_id, isStatic);
 436 
 437   jobject ret = NULL;
 438   DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
 439 
 440   methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
 441   assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
 442   oop reflection_method;
 443   if (m->is_initializer()) {
 444     reflection_method = Reflection::new_constructor(m, CHECK_NULL);
 445   } else {
 446     reflection_method = Reflection::new_method(m, false, CHECK_NULL);
 447   }
 448   ret = JNIHandles::make_local(THREAD, reflection_method);
 449   return ret;
 450 JNI_END
 451 
 452 DT_RETURN_MARK_DECL(GetSuperclass, jclass
 453                     , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
 454 
 455 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
 456   HOTSPOT_JNI_GETSUPERCLASS_ENTRY(env, sub);
 457 
 458   jclass obj = NULL;
 459   DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
 460 
 461   oop mirror = JNIHandles::resolve_non_null(sub);
 462   // primitive classes return NULL
 463   if (java_lang_Class::is_primitive(mirror)) return NULL;
 464 
 465   // Rules of Class.getSuperClass as implemented by KLass::java_super:
 466   // arrays return Object
 467   // interfaces return NULL
 468   // proper classes return Klass::super()
 469   Klass* k = java_lang_Class::as_Klass(mirror);
 470   if (k->is_interface()) return NULL;
 471 
 472   // return mirror for superclass
 473   Klass* super = k->java_super();
 474   // super2 is the value computed by the compiler's getSuperClass intrinsic:
 475   debug_only(Klass* super2 = ( k->is_array_klass()
 476                                  ? vmClasses::Object_klass()
 477                                  : k->super() ) );
 478   assert(super == super2,
 479          "java_super computation depends on interface, array, other super");
 480   obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(THREAD, super->java_mirror());
 481   return obj;
 482 JNI_END
 483 
 484 JNI_ENTRY_NO_PRESERVE(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
 485   HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(env, sub, super);
 486 
 487   oop sub_mirror   = JNIHandles::resolve_non_null(sub);
 488   oop super_mirror = JNIHandles::resolve_non_null(super);
 489   if (java_lang_Class::is_primitive(sub_mirror) ||
 490       java_lang_Class::is_primitive(super_mirror)) {
 491     jboolean ret = (sub_mirror == super_mirror);
 492 
 493     HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret);
 494     return ret;
 495   }
 496   Klass* sub_klass   = java_lang_Class::as_Klass(sub_mirror);
 497   Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
 498   assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
 499   jboolean ret = sub_klass->is_subtype_of(super_klass) ?
 500                    JNI_TRUE : JNI_FALSE;
 501 
 502   HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret);
 503   return ret;
 504 JNI_END
 505 
 506 
 507 DT_RETURN_MARK_DECL(Throw, jint
 508                     , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
 509 
 510 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
 511   HOTSPOT_JNI_THROW_ENTRY(env, obj);
 512 
 513   jint ret = JNI_OK;
 514   DT_RETURN_MARK(Throw, jint, (const jint&)ret);
 515 
 516   THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
 517   ShouldNotReachHere();
 518   return 0;  // Mute compiler.
 519 JNI_END
 520 
 521 
 522 DT_RETURN_MARK_DECL(ThrowNew, jint
 523                     , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
 524 
 525 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
 526   HOTSPOT_JNI_THROWNEW_ENTRY(env, clazz, (char *) message);
 527 
 528   jint ret = JNI_OK;
 529   DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
 530 
 531   InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
 532   Symbol*  name = k->name();
 533   Handle class_loader (THREAD,  k->class_loader());
 534   Handle protection_domain (THREAD, k->protection_domain());
 535   THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
 536   ShouldNotReachHere();
 537   return 0;  // Mute compiler.
 538 JNI_END
 539 
 540 
 541 // JNI functions only transform a pending async exception to a synchronous
 542 // exception in ExceptionOccurred and ExceptionCheck calls, since
 543 // delivering an async exception in other places won't change the native
 544 // code's control flow and would be harmful when native code further calls
 545 // JNI functions with a pending exception. Async exception is also checked
 546 // during the call, so ExceptionOccurred/ExceptionCheck won't return
 547 // false but deliver the async exception at the very end during
 548 // state transition.
 549 
 550 static void jni_check_async_exceptions(JavaThread *thread) {
 551   assert(thread == Thread::current(), "must be itself");
 552   thread->check_and_handle_async_exceptions();
 553 }
 554 
 555 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
 556   HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(env);
 557 
 558   jni_check_async_exceptions(thread);
 559   oop exception = thread->pending_exception();
 560   jthrowable ret = (jthrowable) JNIHandles::make_local(THREAD, exception);
 561 
 562   HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(ret);
 563   return ret;
 564 JNI_END
 565 
 566 
 567 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
 568   HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(env);
 569 
 570   if (thread->has_pending_exception()) {
 571     Handle ex(thread, thread->pending_exception());
 572     thread->clear_pending_exception();
 573     if (ex->is_a(vmClasses::ThreadDeath_klass())) {
 574       // Don't print anything if we are being killed.
 575     } else {
 576       jio_fprintf(defaultStream::error_stream(), "Exception ");
 577       if (thread != NULL && thread->threadObj() != NULL) {
 578         ResourceMark rm(THREAD);
 579         jio_fprintf(defaultStream::error_stream(),
 580         "in thread \"%s\" ", thread->name());
 581       }
 582       if (ex->is_a(vmClasses::Throwable_klass())) {
 583         JavaValue result(T_VOID);
 584         JavaCalls::call_virtual(&result,
 585                                 ex,
 586                                 vmClasses::Throwable_klass(),
 587                                 vmSymbols::printStackTrace_name(),
 588                                 vmSymbols::void_method_signature(),
 589                                 THREAD);
 590         // If an exception is thrown in the call it gets thrown away. Not much
 591         // we can do with it. The native code that calls this, does not check
 592         // for the exception - hence, it might still be in the thread when DestroyVM gets
 593         // called, potentially causing a few asserts to trigger - since no pending exception
 594         // is expected.
 595         CLEAR_PENDING_EXCEPTION;
 596       } else {
 597         ResourceMark rm(THREAD);
 598         jio_fprintf(defaultStream::error_stream(),
 599         ". Uncaught exception of type %s.",
 600         ex->klass()->external_name());
 601       }
 602     }
 603   }
 604 
 605   HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN();
 606 JNI_END
 607 
 608 
 609 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionClear(JNIEnv *env))
 610   HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(env);
 611 
 612   // The jni code might be using this API to clear java thrown exception.
 613   // So just mark jvmti thread exception state as exception caught.
 614   JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
 615   if (state != NULL && state->is_exception_detected()) {
 616     state->set_exception_caught();
 617   }
 618   thread->clear_pending_exception();
 619 
 620   HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN();
 621 JNI_END
 622 
 623 
 624 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
 625   HOTSPOT_JNI_FATALERROR_ENTRY(env, (char *) msg);
 626 
 627   tty->print_cr("FATAL ERROR in native method: %s", msg);
 628   thread->print_stack();
 629   os::abort(); // Dump core and abort
 630 JNI_END
 631 
 632 
 633 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
 634   HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(env, capacity);
 635 
 636   //%note jni_11
 637   if (capacity < 0 ||
 638       ((MaxJNILocalCapacity > 0) && (capacity > MaxJNILocalCapacity))) {
 639     HOTSPOT_JNI_PUSHLOCALFRAME_RETURN((uint32_t)JNI_ERR);
 640     return JNI_ERR;
 641   }
 642   JNIHandleBlock* old_handles = thread->active_handles();
 643   JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
 644   assert(new_handles != NULL, "should not be NULL");
 645   new_handles->set_pop_frame_link(old_handles);
 646   thread->set_active_handles(new_handles);
 647   jint ret = JNI_OK;
 648   HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(ret);
 649   return ret;
 650 JNI_END
 651 
 652 
 653 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
 654   HOTSPOT_JNI_POPLOCALFRAME_ENTRY(env, result);
 655 
 656   //%note jni_11
 657   Handle result_handle(thread, JNIHandles::resolve(result));
 658   JNIHandleBlock* old_handles = thread->active_handles();
 659   JNIHandleBlock* new_handles = old_handles->pop_frame_link();
 660   if (new_handles != NULL) {
 661     // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
 662     // This way code will still work if PopLocalFrame is called without a corresponding
 663     // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
 664     // the release_block call will release the blocks.
 665     thread->set_active_handles(new_handles);
 666     old_handles->set_pop_frame_link(NULL);              // clear link we won't release new_handles below
 667     JNIHandleBlock::release_block(old_handles, thread); // may block
 668     result = JNIHandles::make_local(thread, result_handle());
 669   }
 670   HOTSPOT_JNI_POPLOCALFRAME_RETURN(result);
 671   return result;
 672 JNI_END
 673 
 674 
 675 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
 676   HOTSPOT_JNI_NEWGLOBALREF_ENTRY(env, ref);
 677 
 678   Handle ref_handle(thread, JNIHandles::resolve(ref));
 679   jobject ret = JNIHandles::make_global(ref_handle, AllocFailStrategy::RETURN_NULL);
 680 
 681   HOTSPOT_JNI_NEWGLOBALREF_RETURN(ret);
 682   return ret;
 683 JNI_END
 684 
 685 // Must be JNI_ENTRY (with HandleMark)
 686 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
 687   HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(env, ref);
 688 
 689   JNIHandles::destroy_global(ref);
 690 
 691   HOTSPOT_JNI_DELETEGLOBALREF_RETURN();
 692 JNI_END
 693 
 694 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
 695   HOTSPOT_JNI_DELETELOCALREF_ENTRY(env, obj);
 696 
 697   JNIHandles::destroy_local(obj);
 698 
 699   HOTSPOT_JNI_DELETELOCALREF_RETURN();
 700 JNI_END
 701 
 702 JNI_ENTRY_NO_PRESERVE(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
 703   HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(env, r1, r2);
 704 
 705   jboolean ret = JNIHandles::is_same_object(r1, r2) ? JNI_TRUE : JNI_FALSE;
 706 
 707   HOTSPOT_JNI_ISSAMEOBJECT_RETURN(ret);
 708   return ret;
 709 JNI_END
 710 
 711 
 712 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
 713   HOTSPOT_JNI_NEWLOCALREF_ENTRY(env, ref);
 714 
 715   jobject ret = JNIHandles::make_local(THREAD, JNIHandles::resolve(ref),
 716                                        AllocFailStrategy::RETURN_NULL);
 717 
 718   HOTSPOT_JNI_NEWLOCALREF_RETURN(ret);
 719   return ret;
 720 JNI_END
 721 
 722 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
 723   HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(env, capacity);
 724 
 725   jint ret;
 726   if (capacity >= 0 &&
 727       ((MaxJNILocalCapacity <= 0) || (capacity <= MaxJNILocalCapacity))) {
 728     ret = JNI_OK;
 729   } else {
 730     ret = JNI_ERR;
 731   }
 732 
 733   HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(ret);
 734   return ret;
 735 JNI_END
 736 
 737 // Return the Handle Type
 738 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
 739   HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(env, obj);
 740 
 741   jobjectRefType ret = JNIInvalidRefType;
 742   if (obj != NULL) {
 743     ret = JNIHandles::handle_type(thread, obj);
 744   }
 745 
 746   HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN((void *) ret);
 747   return ret;
 748 JNI_END
 749 
 750 
 751 class JNI_ArgumentPusher : public SignatureIterator {
 752  protected:
 753   JavaCallArguments*  _arguments;
 754 
 755   void push_int(jint x)         { _arguments->push_int(x); }
 756   void push_long(jlong x)       { _arguments->push_long(x); }
 757   void push_float(jfloat x)     { _arguments->push_float(x); }
 758   void push_double(jdouble x)   { _arguments->push_double(x); }
 759   void push_object(jobject x)   { _arguments->push_jobject(x); }
 760 
 761   void push_boolean(jboolean b) {
 762     // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and
 763     // 0 to JNI_FALSE.  Boolean return values from native are normalized the same in
 764     // TemplateInterpreterGenerator::generate_result_handler_for and
 765     // SharedRuntime::generate_native_wrapper.
 766     push_int(b == 0 ? JNI_FALSE : JNI_TRUE);
 767   }
 768 
 769   JNI_ArgumentPusher(Method* method)
 770     : SignatureIterator(method->signature(),
 771                         Fingerprinter(methodHandle(Thread::current(), method)).fingerprint())
 772   {
 773     _arguments = NULL;
 774   }
 775 
 776  public:
 777   virtual void push_arguments_on(JavaCallArguments* arguments) = 0;
 778 };
 779 
 780 
 781 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
 782   va_list _ap;
 783 
 784   void set_ap(va_list rap) {
 785     va_copy(_ap, rap);
 786   }
 787 
 788   friend class SignatureIterator;  // so do_parameters_on can call do_type
 789   void do_type(BasicType type) {
 790     switch (type) {
 791     // these are coerced to int when using va_arg
 792     case T_BYTE:
 793     case T_CHAR:
 794     case T_SHORT:
 795     case T_INT:         push_int(va_arg(_ap, jint)); break;
 796     case T_BOOLEAN:     push_boolean((jboolean) va_arg(_ap, jint)); break;
 797 
 798     // each of these paths is exercised by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
 799 
 800     case T_LONG:        push_long(va_arg(_ap, jlong)); break;
 801     // float is coerced to double w/ va_arg
 802     case T_FLOAT:       push_float((jfloat) va_arg(_ap, jdouble)); break;
 803     case T_DOUBLE:      push_double(va_arg(_ap, jdouble)); break;
 804 
 805     case T_ARRAY:
 806     case T_OBJECT:      push_object(va_arg(_ap, jobject)); break;
 807     default:            ShouldNotReachHere();
 808     }
 809   }
 810 
 811  public:
 812   JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
 813       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)) {
 814     set_ap(rap);
 815   }
 816 
 817   ~JNI_ArgumentPusherVaArg() {
 818     va_end(_ap);
 819   }
 820 
 821   virtual void push_arguments_on(JavaCallArguments* arguments) {
 822     _arguments = arguments;
 823     do_parameters_on(this);
 824   }
 825 };
 826 
 827 
 828 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
 829  protected:
 830   const jvalue *_ap;
 831 
 832   inline void set_ap(const jvalue *rap) { _ap = rap; }
 833 
 834   friend class SignatureIterator;  // so do_parameters_on can call do_type
 835   void do_type(BasicType type) {
 836     switch (type) {
 837     case T_CHAR:        push_int((_ap++)->c); break;
 838     case T_SHORT:       push_int((_ap++)->s); break;
 839     case T_BYTE:        push_int((_ap++)->b); break;
 840     case T_INT:         push_int((_ap++)->i); break;
 841     case T_BOOLEAN:     push_boolean((_ap++)->z); break;
 842     case T_LONG:        push_long((_ap++)->j); break;
 843     case T_FLOAT:       push_float((_ap++)->f); break;
 844     case T_DOUBLE:      push_double((_ap++)->d); break;
 845     case T_ARRAY:
 846     case T_OBJECT:      push_object((_ap++)->l); break;
 847     default:            ShouldNotReachHere();
 848     }
 849   }
 850 
 851  public:
 852   JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
 853       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)) {
 854     set_ap(rap);
 855   }
 856 
 857   virtual void push_arguments_on(JavaCallArguments* arguments) {
 858     _arguments = arguments;
 859     do_parameters_on(this);
 860   }
 861 };
 862 
 863 
 864 enum JNICallType {
 865   JNI_STATIC,
 866   JNI_VIRTUAL,
 867   JNI_NONVIRTUAL
 868 };
 869 
 870 
 871 
 872 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
 873   methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
 874 
 875   // Create object to hold arguments for the JavaCall, and associate it with
 876   // the jni parser
 877   ResourceMark rm(THREAD);
 878   int number_of_parameters = method->size_of_parameters();
 879   JavaCallArguments java_args(number_of_parameters);
 880 
 881   assert(method->is_static(), "method should be static");
 882 
 883   // Fill out JavaCallArguments object
 884   args->push_arguments_on(&java_args);
 885   // Initialize result type
 886   result->set_type(args->return_type());
 887 
 888   // Invoke the method. Result is returned as oop.
 889   JavaCalls::call(result, method, &java_args, CHECK);
 890 
 891   // Convert result
 892   if (is_reference_type(result->get_type())) {
 893     result->set_jobject(JNIHandles::make_local(THREAD, result->get_oop()));
 894   }
 895 }
 896 
 897 
 898 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
 899   oop recv = JNIHandles::resolve(receiver);
 900   if (recv == NULL) {
 901     THROW(vmSymbols::java_lang_NullPointerException());
 902   }
 903   Handle h_recv(THREAD, recv);
 904 
 905   int number_of_parameters;
 906   Method* selected_method;
 907   {
 908     Method* m = Method::resolve_jmethod_id(method_id);
 909     number_of_parameters = m->size_of_parameters();
 910     InstanceKlass* holder = m->method_holder();
 911     if (call_type != JNI_VIRTUAL) {
 912         selected_method = m;
 913     } else if (!m->has_itable_index()) {
 914       // non-interface call -- for that little speed boost, don't handlize
 915       debug_only(NoSafepointVerifier nosafepoint;)
 916       // jni_GetMethodID makes sure class is linked and initialized
 917       // so m should have a valid vtable index.
 918       assert(m->valid_vtable_index(), "no valid vtable index");
 919       int vtbl_index = m->vtable_index();
 920       if (vtbl_index != Method::nonvirtual_vtable_index) {
 921         selected_method = h_recv->klass()->method_at_vtable(vtbl_index);
 922       } else {
 923         // final method
 924         selected_method = m;
 925       }
 926     } else {
 927       // interface call
 928       int itbl_index = m->itable_index();
 929       Klass* k = h_recv->klass();
 930       selected_method = InstanceKlass::cast(k)->method_at_itable(holder, itbl_index, CHECK);
 931     }
 932   }
 933 
 934   methodHandle method(THREAD, selected_method);
 935 
 936   // Create object to hold arguments for the JavaCall, and associate it with
 937   // the jni parser
 938   ResourceMark rm(THREAD);
 939   JavaCallArguments java_args(number_of_parameters);
 940 
 941   // handle arguments
 942   assert(!method->is_static(), "method %s should not be static", method->name_and_sig_as_C_string());
 943   java_args.push_oop(h_recv); // Push jobject handle
 944 
 945   // Fill out JavaCallArguments object
 946   args->push_arguments_on(&java_args);
 947   // Initialize result type
 948   result->set_type(args->return_type());
 949 
 950   // Invoke the method. Result is returned as oop.
 951   JavaCalls::call(result, method, &java_args, CHECK);
 952 
 953   // Convert result
 954   if (is_reference_type(result->get_type())) {
 955     result->set_jobject(JNIHandles::make_local(THREAD, result->get_oop()));
 956   }
 957 }
 958 
 959 DT_RETURN_MARK_DECL(AllocObject, jobject
 960                     , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
 961 
 962 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
 963   HOTSPOT_JNI_ALLOCOBJECT_ENTRY(env, clazz);
 964 
 965   jobject ret = NULL;
 966   DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
 967 
 968   instanceOop i = InstanceKlass::allocate_instance(JNIHandles::resolve_non_null(clazz), CHECK_NULL);
 969   ret = JNIHandles::make_local(THREAD, i);
 970   return ret;
 971 JNI_END
 972 
 973 DT_RETURN_MARK_DECL(NewObjectA, jobject
 974                     , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
 975 
 976 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
 977   HOTSPOT_JNI_NEWOBJECTA_ENTRY(env, clazz, (uintptr_t) methodID);
 978 
 979   jobject obj = NULL;
 980   DT_RETURN_MARK(NewObjectA, jobject, (const jobject&)obj);
 981 
 982   instanceOop i = InstanceKlass::allocate_instance(JNIHandles::resolve_non_null(clazz), CHECK_NULL);
 983   obj = JNIHandles::make_local(THREAD, i);
 984   JavaValue jvalue(T_VOID);
 985   JNI_ArgumentPusherArray ap(methodID, args);
 986   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
 987   return obj;
 988 JNI_END
 989 
 990 
 991 DT_RETURN_MARK_DECL(NewObjectV, jobject
 992                     , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
 993 
 994 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
 995   HOTSPOT_JNI_NEWOBJECTV_ENTRY(env, clazz, (uintptr_t) methodID);
 996 
 997   jobject obj = NULL;
 998   DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
 999 
1000   instanceOop i = InstanceKlass::allocate_instance(JNIHandles::resolve_non_null(clazz), CHECK_NULL);
1001   obj = JNIHandles::make_local(THREAD, i);
1002   JavaValue jvalue(T_VOID);
1003   JNI_ArgumentPusherVaArg ap(methodID, args);
1004   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1005   return obj;
1006 JNI_END
1007 
1008 
1009 DT_RETURN_MARK_DECL(NewObject, jobject
1010                     , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1011 
1012 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1013   HOTSPOT_JNI_NEWOBJECT_ENTRY(env, clazz, (uintptr_t) methodID);
1014 
1015   jobject obj = NULL;
1016   DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1017 
1018   instanceOop i = InstanceKlass::allocate_instance(JNIHandles::resolve_non_null(clazz), CHECK_NULL);
1019   obj = JNIHandles::make_local(THREAD, i);
1020   va_list args;
1021   va_start(args, methodID);
1022   JavaValue jvalue(T_VOID);
1023   JNI_ArgumentPusherVaArg ap(methodID, args);
1024   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1025   va_end(args);
1026   return obj;
1027 JNI_END
1028 
1029 
1030 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1031   HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(env, obj);
1032 
1033   Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1034   jclass ret =
1035     (jclass) JNIHandles::make_local(THREAD, k->java_mirror());
1036 
1037   HOTSPOT_JNI_GETOBJECTCLASS_RETURN(ret);
1038   return ret;
1039 JNI_END
1040 
1041 JNI_ENTRY_NO_PRESERVE(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1042   HOTSPOT_JNI_ISINSTANCEOF_ENTRY(env, obj, clazz);
1043 
1044   jboolean ret = JNI_TRUE;
1045   if (obj != NULL) {
1046     ret = JNI_FALSE;
1047     Klass* k = java_lang_Class::as_Klass(
1048       JNIHandles::resolve_non_null(clazz));
1049     if (k != NULL) {
1050       ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1051     }
1052   }
1053 
1054   HOTSPOT_JNI_ISINSTANCEOF_RETURN(ret);
1055   return ret;
1056 JNI_END
1057 
1058 
1059 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1060                                const char *sig, bool is_static, TRAPS) {
1061   // %%%% This code should probably just call into a method in the LinkResolver
1062   //
1063   // The class should have been loaded (we have an instance of the class
1064   // passed in) so the method and signature should already be in the symbol
1065   // table.  If they're not there, the method doesn't exist.
1066   const char *name_to_probe = (name_str == NULL)
1067                         ? vmSymbols::object_initializer_name()->as_C_string()
1068                         : name_str;
1069   TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1070   TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1071 
1072   if (name == NULL || signature == NULL) {
1073     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1074   }
1075 
1076   oop mirror = JNIHandles::resolve_non_null(clazz);
1077   Klass* klass = java_lang_Class::as_Klass(mirror);
1078 
1079   // Throw a NoSuchMethodError exception if we have an instance of a
1080   // primitive java.lang.Class
1081   if (java_lang_Class::is_primitive(mirror)) {
1082     ResourceMark rm(THREAD);
1083     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), err_msg("%s%s.%s%s", is_static ? "static " : "", klass->signature_name(), name_str, sig));
1084   }
1085 
1086   // Make sure class is linked and initialized before handing id's out to
1087   // Method*s.
1088   klass->initialize(CHECK_NULL);
1089 
1090   Method* m;
1091   if (name == vmSymbols::object_initializer_name() ||
1092       name == vmSymbols::class_initializer_name()) {
1093     // Never search superclasses for constructors
1094     if (klass->is_instance_klass()) {
1095       m = InstanceKlass::cast(klass)->find_method(name, signature);
1096     } else {
1097       m = NULL;
1098     }
1099   } else {
1100     m = klass->lookup_method(name, signature);
1101     if (m == NULL &&  klass->is_instance_klass()) {
1102       m = InstanceKlass::cast(klass)->lookup_method_in_ordered_interfaces(name, signature);
1103     }
1104   }
1105   if (m == NULL || (m->is_static() != is_static)) {
1106     ResourceMark rm(THREAD);
1107     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), err_msg("%s%s.%s%s", is_static ? "static " : "", klass->signature_name(), name_str, sig));
1108   }
1109   return m->jmethod_id();
1110 }
1111 
1112 
1113 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1114           const char *name, const char *sig))
1115   HOTSPOT_JNI_GETMETHODID_ENTRY(env, clazz, (char *) name, (char *) sig);
1116   jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1117   HOTSPOT_JNI_GETMETHODID_RETURN((uintptr_t) ret);
1118   return ret;
1119 JNI_END
1120 
1121 
1122 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1123           const char *name, const char *sig))
1124   HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(env, (char *) clazz, (char *) name, (char *)sig);
1125   jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1126   HOTSPOT_JNI_GETSTATICMETHODID_RETURN((uintptr_t) ret);
1127   return ret;
1128 JNI_END
1129 
1130 
1131 
1132 //
1133 // Calling Methods
1134 //
1135 
1136 
1137 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1138                           , EntryProbe, ReturnProbe)    \
1139 \
1140   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1141                           , ReturnProbe);                          \
1142 \
1143 JNI_ENTRY(ResultType, \
1144           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1145 \
1146   EntryProbe; \
1147   ResultType ret = 0;\
1148   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1149                      (const ResultType&)ret);\
1150 \
1151   va_list args; \
1152   va_start(args, methodID); \
1153   JavaValue jvalue(Tag); \
1154   JNI_ArgumentPusherVaArg ap(methodID, args); \
1155   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1156   va_end(args); \
1157   ret = jvalue.get_##ResultType(); \
1158   return ret;\
1159 JNI_END
1160 
1161 // the runtime type of subword integral basic types is integer
1162 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1163                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1164                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1165 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE
1166                   , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1167                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1168 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR
1169                   , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1170                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1171 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT
1172                   , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1173                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1174 
1175 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT
1176                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1177                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1178 DEFINE_CALLMETHOD(jint,     Int,     T_INT,
1179                   HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1180                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1181 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG
1182                   , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1183                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1184 // Float and double probes don't return value because dtrace doesn't currently support it
1185 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT
1186                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1187                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1188 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE
1189                   , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1190                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1191 
1192 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1193                           , EntryProbe, ReturnProbe)    \
1194 \
1195   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1196                           , ReturnProbe);                          \
1197 \
1198 JNI_ENTRY(ResultType, \
1199           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1200 \
1201   EntryProbe;\
1202   ResultType ret = 0;\
1203   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1204                      (const ResultType&)ret);\
1205 \
1206   JavaValue jvalue(Tag); \
1207   JNI_ArgumentPusherVaArg ap(methodID, args); \
1208   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1209   ret = jvalue.get_##ResultType(); \
1210   return ret;\
1211 JNI_END
1212 
1213 // the runtime type of subword integral basic types is integer
1214 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1215                   , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1216                   HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref))
1217 DEFINE_CALLMETHODV(jbyte,    Byte,    T_BYTE
1218                   , HOTSPOT_JNI_CALLBYTEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1219                   HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref))
1220 DEFINE_CALLMETHODV(jchar,    Char,    T_CHAR
1221                   , HOTSPOT_JNI_CALLCHARMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1222                   HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref))
1223 DEFINE_CALLMETHODV(jshort,   Short,   T_SHORT
1224                   , HOTSPOT_JNI_CALLSHORTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1225                   HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref))
1226 
1227 DEFINE_CALLMETHODV(jobject,  Object,  T_OBJECT
1228                   , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1229                   HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref))
1230 DEFINE_CALLMETHODV(jint,     Int,     T_INT,
1231                   HOTSPOT_JNI_CALLINTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1232                   HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref))
1233 DEFINE_CALLMETHODV(jlong,    Long,    T_LONG
1234                   , HOTSPOT_JNI_CALLLONGMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1235                   HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref))
1236 // Float and double probes don't return value because dtrace doesn't currently support it
1237 DEFINE_CALLMETHODV(jfloat,   Float,   T_FLOAT
1238                   , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1239                   HOTSPOT_JNI_CALLFLOATMETHODV_RETURN())
1240 DEFINE_CALLMETHODV(jdouble,  Double,  T_DOUBLE
1241                   , HOTSPOT_JNI_CALLDOUBLEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1242                   HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN())
1243 
1244 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1245                           , EntryProbe, ReturnProbe)    \
1246 \
1247   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1248                           , ReturnProbe);                          \
1249 \
1250 JNI_ENTRY(ResultType, \
1251           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1252   EntryProbe; \
1253   ResultType ret = 0;\
1254   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1255                      (const ResultType&)ret);\
1256 \
1257   JavaValue jvalue(Tag); \
1258   JNI_ArgumentPusherArray ap(methodID, args); \
1259   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1260   ret = jvalue.get_##ResultType(); \
1261   return ret;\
1262 JNI_END
1263 
1264 // the runtime type of subword integral basic types is integer
1265 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1266                   , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1267                   HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref))
1268 DEFINE_CALLMETHODA(jbyte,    Byte,    T_BYTE
1269                   , HOTSPOT_JNI_CALLBYTEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1270                   HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref))
1271 DEFINE_CALLMETHODA(jchar,    Char,    T_CHAR
1272                   , HOTSPOT_JNI_CALLCHARMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1273                   HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref))
1274 DEFINE_CALLMETHODA(jshort,   Short,   T_SHORT
1275                   , HOTSPOT_JNI_CALLSHORTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1276                   HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref))
1277 
1278 DEFINE_CALLMETHODA(jobject,  Object,  T_OBJECT
1279                   , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1280                   HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref))
1281 DEFINE_CALLMETHODA(jint,     Int,     T_INT,
1282                   HOTSPOT_JNI_CALLINTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1283                   HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref))
1284 DEFINE_CALLMETHODA(jlong,    Long,    T_LONG
1285                   , HOTSPOT_JNI_CALLLONGMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1286                   HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref))
1287 // Float and double probes don't return value because dtrace doesn't currently support it
1288 DEFINE_CALLMETHODA(jfloat,   Float,   T_FLOAT
1289                   , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1290                   HOTSPOT_JNI_CALLFLOATMETHODA_RETURN())
1291 DEFINE_CALLMETHODA(jdouble,  Double,  T_DOUBLE
1292                   , HOTSPOT_JNI_CALLDOUBLEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1293                   HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN())
1294 
1295 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1296 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1297 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1298 
1299 
1300 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1301   HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(env, obj, (uintptr_t) methodID);
1302   DT_VOID_RETURN_MARK(CallVoidMethod);
1303 
1304   va_list args;
1305   va_start(args, methodID);
1306   JavaValue jvalue(T_VOID);
1307   JNI_ArgumentPusherVaArg ap(methodID, args);
1308   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1309   va_end(args);
1310 JNI_END
1311 
1312 
1313 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1314   HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(env, obj, (uintptr_t) methodID);
1315   DT_VOID_RETURN_MARK(CallVoidMethodV);
1316 
1317   JavaValue jvalue(T_VOID);
1318   JNI_ArgumentPusherVaArg ap(methodID, args);
1319   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1320 JNI_END
1321 
1322 
1323 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1324   HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(env, obj, (uintptr_t) methodID);
1325   DT_VOID_RETURN_MARK(CallVoidMethodA);
1326 
1327   JavaValue jvalue(T_VOID);
1328   JNI_ArgumentPusherArray ap(methodID, args);
1329   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1330 JNI_END
1331 
1332 
1333 
1334 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
1335                                     , EntryProbe, ReturnProbe)      \
1336 \
1337   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
1338                           , ReturnProbe);\
1339 \
1340 JNI_ENTRY(ResultType, \
1341           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1342 \
1343   EntryProbe;\
1344   ResultType ret;\
1345   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1346                      (const ResultType&)ret);\
1347 \
1348   va_list args; \
1349   va_start(args, methodID); \
1350   JavaValue jvalue(Tag); \
1351   JNI_ArgumentPusherVaArg ap(methodID, args); \
1352   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1353   va_end(args); \
1354   ret = jvalue.get_##ResultType(); \
1355   return ret;\
1356 JNI_END
1357 
1358 // the runtime type of subword integral basic types is integer
1359 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
1360                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1361                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
1362 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE
1363                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1364                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
1365 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR
1366                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1367                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
1368 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT
1369                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1370                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
1371 
1372 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT
1373                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1374                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
1375 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT
1376                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1377                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
1378 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG
1379                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1380 // Float and double probes don't return value because dtrace doesn't currently support it
1381                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
1382 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT
1383                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1384                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
1385 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE
1386                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1387                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
1388 
1389 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
1390                                     , EntryProbe, ReturnProbe)      \
1391 \
1392   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
1393                           , ReturnProbe);\
1394 \
1395 JNI_ENTRY(ResultType, \
1396           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1397 \
1398   EntryProbe;\
1399   ResultType ret;\
1400   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1401                      (const ResultType&)ret);\
1402 \
1403   JavaValue jvalue(Tag); \
1404   JNI_ArgumentPusherVaArg ap(methodID, args); \
1405   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1406   ret = jvalue.get_##ResultType(); \
1407   return ret;\
1408 JNI_END
1409 
1410 // the runtime type of subword integral basic types is integer
1411 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
1412                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1413                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
1414 DEFINE_CALLNONVIRTUALMETHODV(jbyte,    Byte,    T_BYTE
1415                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1416                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
1417 DEFINE_CALLNONVIRTUALMETHODV(jchar,    Char,    T_CHAR
1418                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1419                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
1420 DEFINE_CALLNONVIRTUALMETHODV(jshort,   Short,   T_SHORT
1421                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1422                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
1423 
1424 DEFINE_CALLNONVIRTUALMETHODV(jobject,  Object,  T_OBJECT
1425                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1426                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
1427 DEFINE_CALLNONVIRTUALMETHODV(jint,     Int,     T_INT
1428                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1429                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
1430 DEFINE_CALLNONVIRTUALMETHODV(jlong,    Long,    T_LONG
1431                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1432 // Float and double probes don't return value because dtrace doesn't currently support it
1433                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
1434 DEFINE_CALLNONVIRTUALMETHODV(jfloat,   Float,   T_FLOAT
1435                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1436                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
1437 DEFINE_CALLNONVIRTUALMETHODV(jdouble,  Double,  T_DOUBLE
1438                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1439                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
1440 
1441 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
1442                                     , EntryProbe, ReturnProbe)      \
1443 \
1444   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
1445                           , ReturnProbe);\
1446 \
1447 JNI_ENTRY(ResultType, \
1448           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1449 \
1450   EntryProbe;\
1451   ResultType ret;\
1452   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1453                      (const ResultType&)ret);\
1454 \
1455   JavaValue jvalue(Tag); \
1456   JNI_ArgumentPusherArray ap(methodID, args); \
1457   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1458   ret = jvalue.get_##ResultType(); \
1459   return ret;\
1460 JNI_END
1461 
1462 // the runtime type of subword integral basic types is integer
1463 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
1464                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1465                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
1466 DEFINE_CALLNONVIRTUALMETHODA(jbyte,    Byte,    T_BYTE
1467                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1468                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
1469 DEFINE_CALLNONVIRTUALMETHODA(jchar,    Char,    T_CHAR
1470                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1471                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
1472 DEFINE_CALLNONVIRTUALMETHODA(jshort,   Short,   T_SHORT
1473                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1474                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
1475 
1476 DEFINE_CALLNONVIRTUALMETHODA(jobject,  Object,  T_OBJECT
1477                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1478                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
1479 DEFINE_CALLNONVIRTUALMETHODA(jint,     Int,     T_INT
1480                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1481                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
1482 DEFINE_CALLNONVIRTUALMETHODA(jlong,    Long,    T_LONG
1483                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1484 // Float and double probes don't return value because dtrace doesn't currently support it
1485                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
1486 DEFINE_CALLNONVIRTUALMETHODA(jfloat,   Float,   T_FLOAT
1487                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1488                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
1489 DEFINE_CALLNONVIRTUALMETHODA(jdouble,  Double,  T_DOUBLE
1490                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1491                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
1492 
1493 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
1494                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
1495 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
1496                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
1497 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
1498                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
1499 
1500 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
1501   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(env, obj, cls, (uintptr_t) methodID);
1502   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
1503 
1504   va_list args;
1505   va_start(args, methodID);
1506   JavaValue jvalue(T_VOID);
1507   JNI_ArgumentPusherVaArg ap(methodID, args);
1508   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1509   va_end(args);
1510 JNI_END
1511 
1512 
1513 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
1514   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
1515                env, obj, cls, (uintptr_t) methodID);
1516   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
1517 
1518   JavaValue jvalue(T_VOID);
1519   JNI_ArgumentPusherVaArg ap(methodID, args);
1520   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1521 JNI_END
1522 
1523 
1524 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
1525   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
1526                 env, obj, cls, (uintptr_t) methodID);
1527   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
1528   JavaValue jvalue(T_VOID);
1529   JNI_ArgumentPusherArray ap(methodID, args);
1530   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1531 JNI_END
1532 
1533 
1534 
1535 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
1536                                 , EntryProbe, ResultProbe) \
1537 \
1538   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
1539                           , ResultProbe);                               \
1540 \
1541 JNI_ENTRY(ResultType, \
1542           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
1543 \
1544   EntryProbe; \
1545   ResultType ret = 0;\
1546   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
1547                      (const ResultType&)ret);\
1548 \
1549   va_list args; \
1550   va_start(args, methodID); \
1551   JavaValue jvalue(Tag); \
1552   JNI_ArgumentPusherVaArg ap(methodID, args); \
1553   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1554   va_end(args); \
1555   ret = jvalue.get_##ResultType(); \
1556   return ret;\
1557 JNI_END
1558 
1559 // the runtime type of subword integral basic types is integer
1560 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
1561                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1562                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
1563 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE
1564                         , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1565                         HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
1566 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR
1567                         , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1568                         HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
1569 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT
1570                         , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1571                         HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
1572 
1573 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT
1574                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1575                         HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
1576 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT
1577                         , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1578                         HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
1579 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG
1580                         , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1581                         HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
1582 // Float and double probes don't return value because dtrace doesn't currently support it
1583 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT
1584                         , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1585                         HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
1586 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE
1587                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1588                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
1589 
1590 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
1591                                 , EntryProbe, ResultProbe) \
1592 \
1593   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
1594                           , ResultProbe);                               \
1595 \
1596 JNI_ENTRY(ResultType, \
1597           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
1598 \
1599   EntryProbe; \
1600   ResultType ret = 0;\
1601   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
1602                      (const ResultType&)ret);\
1603 \
1604   JavaValue jvalue(Tag); \
1605   JNI_ArgumentPusherVaArg ap(methodID, args); \
1606   /* Make sure class is initialized before trying to invoke its method */ \
1607   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); \
1608   k->initialize(CHECK_0); \
1609   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1610   va_end(args); \
1611   ret = jvalue.get_##ResultType(); \
1612   return ret;\
1613 JNI_END
1614 
1615 // the runtime type of subword integral basic types is integer
1616 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
1617                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1618                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
1619 DEFINE_CALLSTATICMETHODV(jbyte,    Byte,    T_BYTE
1620                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1621                         HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
1622 DEFINE_CALLSTATICMETHODV(jchar,    Char,    T_CHAR
1623                         , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1624                         HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
1625 DEFINE_CALLSTATICMETHODV(jshort,   Short,   T_SHORT
1626                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1627                         HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
1628 
1629 DEFINE_CALLSTATICMETHODV(jobject,  Object,  T_OBJECT
1630                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1631                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
1632 DEFINE_CALLSTATICMETHODV(jint,     Int,     T_INT
1633                         , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1634                         HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
1635 DEFINE_CALLSTATICMETHODV(jlong,    Long,    T_LONG
1636                         , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1637                         HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
1638 // Float and double probes don't return value because dtrace doesn't currently support it
1639 DEFINE_CALLSTATICMETHODV(jfloat,   Float,   T_FLOAT
1640                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1641                         HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
1642 DEFINE_CALLSTATICMETHODV(jdouble,  Double,  T_DOUBLE
1643                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1644                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
1645 
1646 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
1647                                 , EntryProbe, ResultProbe) \
1648 \
1649   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
1650                           , ResultProbe);                               \
1651 \
1652 JNI_ENTRY(ResultType, \
1653           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
1654 \
1655   EntryProbe; \
1656   ResultType ret = 0;\
1657   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
1658                      (const ResultType&)ret);\
1659 \
1660   JavaValue jvalue(Tag); \
1661   JNI_ArgumentPusherArray ap(methodID, args); \
1662   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1663   ret = jvalue.get_##ResultType(); \
1664   return ret;\
1665 JNI_END
1666 
1667 // the runtime type of subword integral basic types is integer
1668 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
1669                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1670                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
1671 DEFINE_CALLSTATICMETHODA(jbyte,    Byte,    T_BYTE
1672                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1673                         HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
1674 DEFINE_CALLSTATICMETHODA(jchar,    Char,    T_CHAR
1675                         , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1676                         HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
1677 DEFINE_CALLSTATICMETHODA(jshort,   Short,   T_SHORT
1678                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1679                         HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
1680 
1681 DEFINE_CALLSTATICMETHODA(jobject,  Object,  T_OBJECT
1682                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1683                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
1684 DEFINE_CALLSTATICMETHODA(jint,     Int,     T_INT
1685                         , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1686                         HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
1687 DEFINE_CALLSTATICMETHODA(jlong,    Long,    T_LONG
1688                         , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1689                         HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
1690 // Float and double probes don't return value because dtrace doesn't currently support it
1691 DEFINE_CALLSTATICMETHODA(jfloat,   Float,   T_FLOAT
1692                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1693                         HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
1694 DEFINE_CALLSTATICMETHODA(jdouble,  Double,  T_DOUBLE
1695                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1696                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
1697 
1698 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
1699                          , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
1700 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
1701                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
1702 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
1703                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
1704 
1705 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
1706   HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(env, cls, (uintptr_t) methodID);
1707   DT_VOID_RETURN_MARK(CallStaticVoidMethod);
1708 
1709   va_list args;
1710   va_start(args, methodID);
1711   JavaValue jvalue(T_VOID);
1712   JNI_ArgumentPusherVaArg ap(methodID, args);
1713   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
1714   va_end(args);
1715 JNI_END
1716 
1717 
1718 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
1719   HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(env, cls, (uintptr_t) methodID);
1720   DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
1721 
1722   JavaValue jvalue(T_VOID);
1723   JNI_ArgumentPusherVaArg ap(methodID, args);
1724   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
1725 JNI_END
1726 
1727 
1728 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
1729   HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(env, cls, (uintptr_t) methodID);
1730   DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
1731 
1732   JavaValue jvalue(T_VOID);
1733   JNI_ArgumentPusherArray ap(methodID, args);
1734   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
1735 JNI_END
1736 
1737 
1738 //
1739 // Accessing Fields
1740 //
1741 
1742 
1743 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
1744                     , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
1745 
1746 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
1747           const char *name, const char *sig))
1748   HOTSPOT_JNI_GETFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
1749   jfieldID ret = 0;
1750   DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
1751 
1752   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1753 
1754   // The class should have been loaded (we have an instance of the class
1755   // passed in) so the field and signature should already be in the symbol
1756   // table.  If they're not there, the field doesn't exist.
1757   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
1758   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
1759   if (fieldname == NULL || signame == NULL) {
1760     ResourceMark rm;
1761     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), err_msg("%s.%s %s", k->external_name(), name, sig));
1762   }
1763 
1764   // Make sure class is initialized before handing id's out to fields
1765   k->initialize(CHECK_NULL);
1766 
1767   fieldDescriptor fd;
1768   if (!k->is_instance_klass() ||
1769       !InstanceKlass::cast(k)->find_field(fieldname, signame, false, &fd)) {
1770     ResourceMark rm;
1771     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), err_msg("%s.%s %s", k->external_name(), name, sig));
1772   }
1773 
1774   // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
1775   // It may also have hash bits for k, if VerifyJNIFields is turned on.
1776   ret = jfieldIDWorkaround::to_instance_jfieldID(k, fd.offset());
1777   return ret;
1778 JNI_END
1779 
1780 
1781 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
1782   HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID);
1783   oop o = JNIHandles::resolve_non_null(obj);
1784   Klass* k = o->klass();
1785   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
1786   // Keep JVMTI addition small and only check enabled flag here.
1787   // jni_GetField_probe() assumes that is okay to create handles.
1788   if (JvmtiExport::should_post_field_access()) {
1789     o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
1790   }
1791   oop loaded_obj = HeapAccess<ON_UNKNOWN_OOP_REF>::oop_load_at(o, offset);
1792   jobject ret = JNIHandles::make_local(THREAD, loaded_obj);
1793   HOTSPOT_JNI_GETOBJECTFIELD_RETURN(ret);
1794   return ret;
1795 JNI_END
1796 
1797 
1798 
1799 #define DEFINE_GETFIELD(Return,Fieldname,Result \
1800   , EntryProbe, ReturnProbe) \
1801 \
1802   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
1803   , ReturnProbe); \
1804 \
1805 JNI_ENTRY_NO_PRESERVE(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
1806 \
1807   EntryProbe; \
1808   Return ret = 0;\
1809   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
1810 \
1811   oop o = JNIHandles::resolve_non_null(obj); \
1812   Klass* k = o->klass(); \
1813   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
1814   /* Keep JVMTI addition small and only check enabled flag here.       */ \
1815   if (JvmtiExport::should_post_field_access()) { \
1816     o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false); \
1817   } \
1818   ret = o->Fieldname##_field(offset); \
1819   return ret; \
1820 JNI_END
1821 
1822 DEFINE_GETFIELD(jboolean, bool,   Boolean
1823                 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
1824                 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
1825 DEFINE_GETFIELD(jbyte,    byte,   Byte
1826                 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
1827                 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
1828 DEFINE_GETFIELD(jchar,    char,   Char
1829                 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
1830                 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
1831 DEFINE_GETFIELD(jshort,   short,  Short
1832                 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
1833                 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
1834 DEFINE_GETFIELD(jint,     int,    Int
1835                 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
1836                 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
1837 DEFINE_GETFIELD(jlong,    long,   Long
1838                 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
1839                 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
1840 // Float and double probes don't return value because dtrace doesn't currently support it
1841 DEFINE_GETFIELD(jfloat,   float,  Float
1842                 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
1843                 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
1844 DEFINE_GETFIELD(jdouble,  double, Double
1845                 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
1846                 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
1847 
1848 address jni_GetBooleanField_addr() {
1849   return (address)jni_GetBooleanField;
1850 }
1851 address jni_GetByteField_addr() {
1852   return (address)jni_GetByteField;
1853 }
1854 address jni_GetCharField_addr() {
1855   return (address)jni_GetCharField;
1856 }
1857 address jni_GetShortField_addr() {
1858   return (address)jni_GetShortField;
1859 }
1860 address jni_GetIntField_addr() {
1861   return (address)jni_GetIntField;
1862 }
1863 address jni_GetLongField_addr() {
1864   return (address)jni_GetLongField;
1865 }
1866 address jni_GetFloatField_addr() {
1867   return (address)jni_GetFloatField;
1868 }
1869 address jni_GetDoubleField_addr() {
1870   return (address)jni_GetDoubleField;
1871 }
1872 
1873 JNI_ENTRY_NO_PRESERVE(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
1874   HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID, value);
1875   oop o = JNIHandles::resolve_non_null(obj);
1876   Klass* k = o->klass();
1877   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
1878   // Keep JVMTI addition small and only check enabled flag here.
1879   if (JvmtiExport::should_post_field_modification()) {
1880     jvalue field_value;
1881     field_value.l = value;
1882     o = JvmtiExport::jni_SetField_probe(thread, obj, o, k, fieldID, false, JVM_SIGNATURE_CLASS, (jvalue *)&field_value);
1883   }
1884   HeapAccess<ON_UNKNOWN_OOP_REF>::oop_store_at(o, offset, JNIHandles::resolve(value));
1885   HOTSPOT_JNI_SETOBJECTFIELD_RETURN();
1886 JNI_END
1887 
1888 
1889 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
1890                         , EntryProbe, ReturnProbe) \
1891 \
1892 JNI_ENTRY_NO_PRESERVE(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
1893 \
1894   EntryProbe; \
1895 \
1896   oop o = JNIHandles::resolve_non_null(obj); \
1897   Klass* k = o->klass(); \
1898   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
1899   /* Keep JVMTI addition small and only check enabled flag here.       */ \
1900   if (JvmtiExport::should_post_field_modification()) { \
1901     jvalue field_value; \
1902     field_value.unionType = value; \
1903     o = JvmtiExport::jni_SetField_probe(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
1904   } \
1905   if (SigType == JVM_SIGNATURE_BOOLEAN) { value = ((jboolean)value) & 1; } \
1906   o->Fieldname##_field_put(offset, value); \
1907   ReturnProbe; \
1908 JNI_END
1909 
1910 DEFINE_SETFIELD(jboolean, bool,   Boolean, JVM_SIGNATURE_BOOLEAN, z
1911                 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
1912                 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
1913 DEFINE_SETFIELD(jbyte,    byte,   Byte,    JVM_SIGNATURE_BYTE, b
1914                 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
1915                 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
1916 DEFINE_SETFIELD(jchar,    char,   Char,    JVM_SIGNATURE_CHAR, c
1917                 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
1918                 HOTSPOT_JNI_SETCHARFIELD_RETURN())
1919 DEFINE_SETFIELD(jshort,   short,  Short,   JVM_SIGNATURE_SHORT, s
1920                 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
1921                 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
1922 DEFINE_SETFIELD(jint,     int,    Int,     JVM_SIGNATURE_INT, i
1923                 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
1924                 HOTSPOT_JNI_SETINTFIELD_RETURN())
1925 DEFINE_SETFIELD(jlong,    long,   Long,    JVM_SIGNATURE_LONG, j
1926                 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
1927                 HOTSPOT_JNI_SETLONGFIELD_RETURN())
1928 // Float and double probes don't return value because dtrace doesn't currently support it
1929 DEFINE_SETFIELD(jfloat,   float,  Float,   JVM_SIGNATURE_FLOAT, f
1930                 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
1931                 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
1932 DEFINE_SETFIELD(jdouble,  double, Double,  JVM_SIGNATURE_DOUBLE, d
1933                 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
1934                 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
1935 
1936 DT_RETURN_MARK_DECL(ToReflectedField, jobject
1937                     , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
1938 
1939 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
1940   HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(env, cls, (uintptr_t) fieldID, isStatic);
1941   jobject ret = NULL;
1942   DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
1943 
1944   fieldDescriptor fd;
1945   bool found = false;
1946   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
1947 
1948   assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
1949 
1950   if (isStatic) {
1951     // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
1952     JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
1953     assert(id->is_static_field_id(), "invalid static field id");
1954     found = id->find_local_field(&fd);
1955   } else {
1956     // Non-static field. The fieldID is really the offset of the field within the instanceOop.
1957     int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
1958     found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
1959   }
1960   assert(found, "bad fieldID passed into jni_ToReflectedField");
1961   oop reflected = Reflection::new_field(&fd, CHECK_NULL);
1962   ret = JNIHandles::make_local(THREAD, reflected);
1963   return ret;
1964 JNI_END
1965 
1966 
1967 //
1968 // Accessing Static Fields
1969 //
1970 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
1971                     , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
1972 
1973 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
1974           const char *name, const char *sig))
1975   HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
1976   jfieldID ret = NULL;
1977   DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
1978 
1979   // The class should have been loaded (we have an instance of the class
1980   // passed in) so the field and signature should already be in the symbol
1981   // table.  If they're not there, the field doesn't exist.
1982   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
1983   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
1984   if (fieldname == NULL || signame == NULL) {
1985     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
1986   }
1987   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
1988   // Make sure class is initialized before handing id's out to static fields
1989   k->initialize(CHECK_NULL);
1990 
1991   fieldDescriptor fd;
1992   if (!k->is_instance_klass() ||
1993       !InstanceKlass::cast(k)->find_field(fieldname, signame, true, &fd)) {
1994     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
1995   }
1996 
1997   // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
1998   JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
1999   debug_only(id->set_is_static_field_id();)
2000 
2001   debug_only(id->verify(fd.field_holder()));
2002 
2003   ret = jfieldIDWorkaround::to_static_jfieldID(id);
2004   return ret;
2005 JNI_END
2006 
2007 
2008 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2009   HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID);
2010 #if INCLUDE_JNI_CHECK
2011   DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2012 #endif // INCLUDE_JNI_CHECK
2013   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2014   assert(id->is_static_field_id(), "invalid static field id");
2015   // Keep JVMTI addition small and only check enabled flag here.
2016   // jni_GetField_probe() assumes that is okay to create handles.
2017   if (JvmtiExport::should_post_field_access()) {
2018     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2019   }
2020   jobject ret = JNIHandles::make_local(THREAD, id->holder()->java_mirror()->obj_field(id->offset()));
2021   HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(ret);
2022   return ret;
2023 JNI_END
2024 
2025 
2026 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
2027                               , EntryProbe, ReturnProbe) \
2028 \
2029   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
2030                           , ReturnProbe);                                          \
2031 \
2032 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
2033   EntryProbe; \
2034   Return ret = 0;\
2035   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
2036                      (const Return&)ret);\
2037   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2038   assert(id->is_static_field_id(), "invalid static field id"); \
2039   /* Keep JVMTI addition small and only check enabled flag here. */ \
2040   /* jni_GetField_probe() assumes that is okay to create handles. */ \
2041   if (JvmtiExport::should_post_field_access()) { \
2042     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
2043   } \
2044   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
2045   return ret;\
2046 JNI_END
2047 
2048 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean
2049                       , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
2050 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte
2051                       , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref)   )
2052 DEFINE_GETSTATICFIELD(jchar,    char,   Char
2053                       , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref)   )
2054 DEFINE_GETSTATICFIELD(jshort,   short,  Short
2055                       , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref)  )
2056 DEFINE_GETSTATICFIELD(jint,     int,    Int
2057                       , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),     HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref)    )
2058 DEFINE_GETSTATICFIELD(jlong,    long,   Long
2059                       , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref)   )
2060 // Float and double probes don't return value because dtrace doesn't currently support it
2061 DEFINE_GETSTATICFIELD(jfloat,   float,  Float
2062                       , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN()          )
2063 DEFINE_GETSTATICFIELD(jdouble,  double, Double
2064                       , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),  HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN()         )
2065 
2066 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
2067  HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value);
2068   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2069   assert(id->is_static_field_id(), "invalid static field id");
2070   // Keep JVMTI addition small and only check enabled flag here.
2071   // jni_SetField_probe() assumes that is okay to create handles.
2072   if (JvmtiExport::should_post_field_modification()) {
2073     jvalue field_value;
2074     field_value.l = value;
2075     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, JVM_SIGNATURE_CLASS, (jvalue *)&field_value);
2076   }
2077   id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
2078   HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN();
2079 JNI_END
2080 
2081 
2082 
2083 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
2084                               , EntryProbe, ReturnProbe) \
2085 \
2086 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
2087   EntryProbe; \
2088 \
2089   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2090   assert(id->is_static_field_id(), "invalid static field id"); \
2091   /* Keep JVMTI addition small and only check enabled flag here. */ \
2092   /* jni_SetField_probe() assumes that is okay to create handles. */ \
2093   if (JvmtiExport::should_post_field_modification()) { \
2094     jvalue field_value; \
2095     field_value.unionType = value; \
2096     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
2097   } \
2098   if (SigType == JVM_SIGNATURE_BOOLEAN) { value = ((jboolean)value) & 1; } \
2099   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
2100   ReturnProbe;\
2101 JNI_END
2102 
2103 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, JVM_SIGNATURE_BOOLEAN, z
2104                       , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
2105                       HOTSPOT_JNI_SETSTATICBOOLEANFIELD_RETURN())
2106 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    JVM_SIGNATURE_BYTE, b
2107                       , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2108                       HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
2109 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    JVM_SIGNATURE_CHAR, c
2110                       , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2111                       HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
2112 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   JVM_SIGNATURE_SHORT, s
2113                       , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2114                       HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
2115 DEFINE_SETSTATICFIELD(jint,     int,    Int,     JVM_SIGNATURE_INT, i
2116                       , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2117                       HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
2118 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    JVM_SIGNATURE_LONG, j
2119                       , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2120                       HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
2121 // Float and double probes don't return value because dtrace doesn't currently support it
2122 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   JVM_SIGNATURE_FLOAT, f
2123                       , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
2124                       HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
2125 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  JVM_SIGNATURE_DOUBLE, d
2126                       , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
2127                       HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
2128 
2129 //
2130 // String Operations
2131 //
2132 
2133 // Unicode Interface
2134 
2135 DT_RETURN_MARK_DECL(NewString, jstring
2136                     , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
2137 
2138 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
2139  HOTSPOT_JNI_NEWSTRING_ENTRY(env, (uint16_t *) unicodeChars, len);
2140   jstring ret = NULL;
2141   DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
2142   oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
2143   ret = (jstring) JNIHandles::make_local(THREAD, string);
2144   return ret;
2145 JNI_END
2146 
2147 
2148 JNI_ENTRY_NO_PRESERVE(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
2149   HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(env, string);
2150   jsize ret = 0;
2151   oop s = JNIHandles::resolve_non_null(string);
2152   ret = java_lang_String::length(s);
2153  HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(ret);
2154   return ret;
2155 JNI_END
2156 
2157 
2158 JNI_ENTRY_NO_PRESERVE(const jchar*, jni_GetStringChars(
2159   JNIEnv *env, jstring string, jboolean *isCopy))
2160  HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
2161   jchar* buf = NULL;
2162   oop s = JNIHandles::resolve_non_null(string);
2163   typeArrayOop s_value = java_lang_String::value(s);
2164   if (s_value != NULL) {
2165     int s_len = java_lang_String::length(s, s_value);
2166     bool is_latin1 = java_lang_String::is_latin1(s);
2167     buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal);  // add one for zero termination
2168     /* JNI Specification states return NULL on OOM */
2169     if (buf != NULL) {
2170       if (s_len > 0) {
2171         if (!is_latin1) {
2172           ArrayAccess<>::arraycopy_to_native(s_value, (size_t) typeArrayOopDesc::element_offset<jchar>(0),
2173                                              buf, s_len);
2174         } else {
2175           for (int i = 0; i < s_len; i++) {
2176             buf[i] = ((jchar) s_value->byte_at(i)) & 0xff;
2177           }
2178         }
2179       }
2180       buf[s_len] = 0;
2181       //%note jni_5
2182       if (isCopy != NULL) {
2183         *isCopy = JNI_TRUE;
2184       }
2185     }
2186   }
2187   HOTSPOT_JNI_GETSTRINGCHARS_RETURN(buf);
2188   return buf;
2189 JNI_END
2190 
2191 
2192 JNI_ENTRY_NO_PRESERVE(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
2193   HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(env, str, (uint16_t *) chars);
2194   //%note jni_6
2195   if (chars != NULL) {
2196     // Since String objects are supposed to be immutable, don't copy any
2197     // new data back.  A bad user will have to go after the char array.
2198     FreeHeap((void*) chars);
2199   }
2200   HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN();
2201 JNI_END
2202 
2203 
2204 // UTF Interface
2205 
2206 DT_RETURN_MARK_DECL(NewStringUTF, jstring
2207                     , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
2208 
2209 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
2210   HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(env, (char *) bytes);
2211   jstring ret;
2212   DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
2213 
2214   oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
2215   ret = (jstring) JNIHandles::make_local(THREAD, result);
2216   return ret;
2217 JNI_END
2218 
2219 
2220 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
2221  HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(env, string);
2222   oop java_string = JNIHandles::resolve_non_null(string);
2223   jsize ret = java_lang_String::utf8_length(java_string);
2224   HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(ret);
2225   return ret;
2226 JNI_END
2227 
2228 
2229 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
2230  HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
2231   char* result = NULL;
2232   oop java_string = JNIHandles::resolve_non_null(string);
2233   typeArrayOop s_value = java_lang_String::value(java_string);
2234   if (s_value != NULL) {
2235     size_t length = java_lang_String::utf8_length(java_string, s_value);
2236     /* JNI Specification states return NULL on OOM */
2237     result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
2238     if (result != NULL) {
2239       java_lang_String::as_utf8_string(java_string, s_value, result, (int) length + 1);
2240       if (isCopy != NULL) {
2241         *isCopy = JNI_TRUE;
2242       }
2243     }
2244   }
2245  HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(result);
2246   return result;
2247 JNI_END
2248 
2249 
2250 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
2251  HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(env, str, (char *) chars);
2252   if (chars != NULL) {
2253     FreeHeap((char*) chars);
2254   }
2255 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN();
2256 JNI_END
2257 
2258 
2259 JNI_ENTRY_NO_PRESERVE(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
2260  HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(env, array);
2261   arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
2262   assert(a->is_array(), "must be array");
2263   jsize ret = a->length();
2264  HOTSPOT_JNI_GETARRAYLENGTH_RETURN(ret);
2265   return ret;
2266 JNI_END
2267 
2268 
2269 //
2270 // Object Array Operations
2271 //
2272 
2273 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
2274                     , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
2275 
2276 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
2277  HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(env, length, elementClass, initialElement);
2278   jobjectArray ret = NULL;
2279   DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
2280   Klass* ek = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass));
2281   Klass* ak = ek->array_klass(CHECK_NULL);
2282   ObjArrayKlass::cast(ak)->initialize(CHECK_NULL);
2283   objArrayOop result = ObjArrayKlass::cast(ak)->allocate(length, CHECK_NULL);
2284   oop initial_value = JNIHandles::resolve(initialElement);
2285   if (initial_value != NULL) {  // array already initialized with NULL
2286     for (int index = 0; index < length; index++) {
2287       result->obj_at_put(index, initial_value);
2288     }
2289   }
2290   ret = (jobjectArray) JNIHandles::make_local(THREAD, result);
2291   return ret;
2292 JNI_END
2293 
2294 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
2295                     , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
2296 
2297 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
2298  HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(env, array, index);
2299   jobject ret = NULL;
2300   DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
2301   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
2302   if (a->is_within_bounds(index)) {
2303     ret = JNIHandles::make_local(THREAD, a->obj_at(index));
2304     return ret;
2305   } else {
2306     ResourceMark rm(THREAD);
2307     stringStream ss;
2308     ss.print("Index %d out of bounds for length %d", index, a->length());
2309     THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string());
2310   }
2311 JNI_END
2312 
2313 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
2314                          , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
2315 
2316 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
2317  HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(env, array, index, value);
2318   DT_VOID_RETURN_MARK(SetObjectArrayElement);
2319 
2320   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
2321   oop v = JNIHandles::resolve(value);
2322   if (a->is_within_bounds(index)) {
2323     if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
2324       a->obj_at_put(index, v);
2325     } else {
2326       ResourceMark rm(THREAD);
2327       stringStream ss;
2328       Klass *bottom_kl = ObjArrayKlass::cast(a->klass())->bottom_klass();
2329       ss.print("type mismatch: can not store %s to %s[%d]",
2330                v->klass()->external_name(),
2331                bottom_kl->is_typeArray_klass() ? type2name_tab[ArrayKlass::cast(bottom_kl)->element_type()] : bottom_kl->external_name(),
2332                index);
2333       for (int dims = ArrayKlass::cast(a->klass())->dimension(); dims > 1; --dims) {
2334         ss.print("[]");
2335       }
2336       THROW_MSG(vmSymbols::java_lang_ArrayStoreException(), ss.as_string());
2337     }
2338   } else {
2339     ResourceMark rm(THREAD);
2340     stringStream ss;
2341     ss.print("Index %d out of bounds for length %d", index, a->length());
2342     THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string());
2343   }
2344 JNI_END
2345 
2346 
2347 
2348 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
2349                               ,EntryProbe,ReturnProbe)  \
2350 \
2351   DT_RETURN_MARK_DECL(New##Result##Array, Return \
2352                       , ReturnProbe); \
2353 \
2354 JNI_ENTRY(Return, \
2355           jni_New##Result##Array(JNIEnv *env, jsize len)) \
2356   EntryProbe; \
2357   Return ret = NULL;\
2358   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
2359 \
2360   oop obj= oopFactory::Allocator(len, CHECK_NULL); \
2361   ret = (Return) JNIHandles::make_local(THREAD, obj); \
2362   return ret;\
2363 JNI_END
2364 
2365 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean,
2366                       HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
2367                       HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
2368 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte,
2369                       HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
2370                       HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
2371 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short,
2372                       HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
2373                       HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
2374 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char,
2375                       HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
2376                       HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
2377 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int,
2378                       HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
2379                       HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
2380 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long,
2381                       HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
2382                       HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
2383 DEFINE_NEWSCALARARRAY(jfloatArray,   new_floatArray,  Float,
2384                       HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
2385                       HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
2386 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double,
2387                       HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
2388                       HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
2389 
2390 // Return an address which will fault if the caller writes to it.
2391 
2392 static char* get_bad_address() {
2393   static char* bad_address = NULL;
2394   if (bad_address == NULL) {
2395     size_t size = os::vm_allocation_granularity();
2396     bad_address = os::reserve_memory(size);
2397     if (bad_address != NULL) {
2398       os::protect_memory(bad_address, size, os::MEM_PROT_READ,
2399                          /*is_committed*/false);
2400       MemTracker::record_virtual_memory_type((void*)bad_address, mtInternal);
2401     }
2402   }
2403   return bad_address;
2404 }
2405 
2406 
2407 
2408 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
2409                                       , EntryProbe, ReturnProbe) \
2410 \
2411 JNI_ENTRY_NO_PRESERVE(ElementType*, \
2412           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
2413   EntryProbe; \
2414   /* allocate an chunk of memory in c land */ \
2415   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2416   ElementType* result; \
2417   int len = a->length(); \
2418   if (len == 0) { \
2419     if (isCopy != NULL) { \
2420       *isCopy = JNI_FALSE; \
2421     } \
2422     /* Empty array: legal but useless, can't return NULL. \
2423      * Return a pointer to something useless. \
2424      * Avoid asserts in typeArrayOop. */ \
2425     result = (ElementType*)get_bad_address(); \
2426   } else { \
2427     /* JNI Specification states return NULL on OOM */                    \
2428     result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
2429     if (result != NULL) {                                                \
2430       /* copy the array to the c chunk */                                \
2431       ArrayAccess<>::arraycopy_to_native(a, typeArrayOopDesc::element_offset<ElementType>(0), \
2432                                          result, len);                   \
2433       if (isCopy) {                                                      \
2434         *isCopy = JNI_TRUE;                                              \
2435       }                                                                  \
2436     }                                                                    \
2437   } \
2438   ReturnProbe; \
2439   return result; \
2440 JNI_END
2441 
2442 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
2443                               , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2444                               HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
2445 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte
2446                               , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2447                               HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
2448 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short
2449                               , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
2450                               HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
2451 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char
2452                               , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
2453                               HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
2454 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int
2455                               , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2456                               HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
2457 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long
2458                               , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2459                               HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
2460 // Float and double probes don't return value because dtrace doesn't currently support it
2461 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float
2462                               , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2463                               HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
2464 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double
2465                               , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2466                               HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
2467 
2468 
2469 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
2470                                           , EntryProbe, ReturnProbe);\
2471 \
2472 JNI_ENTRY_NO_PRESERVE(void, \
2473           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
2474                                              ElementType *buf, jint mode)) \
2475   EntryProbe; \
2476   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2477   int len = a->length(); \
2478   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \
2479     if ((mode == 0) || (mode == JNI_COMMIT)) { \
2480       ArrayAccess<>::arraycopy_from_native(buf, a, typeArrayOopDesc::element_offset<ElementType>(0), len); \
2481     } \
2482     if ((mode == 0) || (mode == JNI_ABORT)) { \
2483       FreeHeap(buf); \
2484     } \
2485   } \
2486   ReturnProbe; \
2487 JNI_END
2488 
2489 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
2490                                   , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
2491                                   HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
2492 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte
2493                                   , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
2494                                   HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
2495 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short
2496                                   ,  HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
2497                                   HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
2498 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char
2499                                   ,  HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
2500                                   HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
2501 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int
2502                                   , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
2503                                   HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
2504 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long
2505                                   , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
2506                                   HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
2507 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float
2508                                   , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
2509                                   HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
2510 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double
2511                                   , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
2512                                   HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
2513 
2514 static void check_bounds(jsize start, jsize copy_len, jsize array_len, TRAPS) {
2515   ResourceMark rm(THREAD);
2516   if (copy_len < 0) {
2517     stringStream ss;
2518     ss.print("Length %d is negative", copy_len);
2519     THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string());
2520   } else if (start < 0 || (start > array_len - copy_len)) {
2521     stringStream ss;
2522     ss.print("Array region %d.." INT64_FORMAT " out of bounds for length %d",
2523              start, (int64_t)start+(int64_t)copy_len, array_len);
2524     THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string());
2525   }
2526 }
2527 
2528 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
2529                                     , EntryProbe, ReturnProbe); \
2530   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
2531                            , ReturnProbe); \
2532 \
2533 JNI_ENTRY(void, \
2534 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
2535              jsize len, ElementType *buf)) \
2536   EntryProbe; \
2537   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
2538   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2539   check_bounds(start, len, src->length(), CHECK); \
2540   if (len > 0) {    \
2541     ArrayAccess<>::arraycopy_to_native(src, typeArrayOopDesc::element_offset<ElementType>(start), buf, len); \
2542   } \
2543 JNI_END
2544 
2545 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
2546                             , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2547                             HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
2548 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte
2549                             ,  HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
2550                             HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
2551 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short
2552                             , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2553                             HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
2554 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char
2555                             ,  HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
2556                             HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
2557 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int
2558                             , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
2559                             HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
2560 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long
2561                             ,  HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2562                             HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
2563 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float
2564                             , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
2565                             HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
2566 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double
2567                             , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
2568                             HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
2569 
2570 
2571 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
2572                                     , EntryProbe, ReturnProbe); \
2573   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
2574                            ,ReturnProbe);           \
2575 \
2576 JNI_ENTRY(void, \
2577 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
2578              jsize len, const ElementType *buf)) \
2579   EntryProbe; \
2580   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
2581   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2582   check_bounds(start, len, dst->length(), CHECK); \
2583   if (len > 0) { \
2584     ArrayAccess<>::arraycopy_from_native(buf, dst, typeArrayOopDesc::element_offset<ElementType>(start), len); \
2585   } \
2586 JNI_END
2587 
2588 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
2589                             , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
2590                             HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
2591 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte
2592                             , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
2593                             HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
2594 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short
2595                             , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2596                             HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
2597 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char
2598                             , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2599                             HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
2600 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int
2601                             , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
2602                             HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
2603 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long
2604                             , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2605                             HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
2606 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float
2607                             , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
2608                             HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
2609 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double
2610                             , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
2611                             HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
2612 
2613 
2614 DT_RETURN_MARK_DECL(RegisterNatives, jint
2615                     , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
2616 
2617 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
2618                                     const JNINativeMethod *methods,
2619                                     jint nMethods))
2620   HOTSPOT_JNI_REGISTERNATIVES_ENTRY(env, clazz, (void *) methods, nMethods);
2621   jint ret = 0;
2622   DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
2623 
2624   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2625 
2626   // There are no restrictions on native code registering native methods,
2627   // which allows agents to redefine the bindings to native methods, however
2628   // we issue a warning if any code running outside of the boot/platform
2629   // loader is rebinding any native methods in classes loaded by the
2630   // boot/platform loader that are in named modules. That will catch changes
2631   // to platform classes while excluding classes added to the bootclasspath.
2632   bool do_warning = false;
2633 
2634   // Only instanceKlasses can have native methods
2635   if (k->is_instance_klass()) {
2636     oop cl = k->class_loader();
2637     InstanceKlass* ik = InstanceKlass::cast(k);
2638     // Check for a platform class
2639     if ((cl ==  NULL || SystemDictionary::is_platform_class_loader(cl)) &&
2640         ik->module()->is_named()) {
2641       Klass* caller = thread->security_get_caller_class(1);
2642       // If no caller class, or caller class has a different loader, then
2643       // issue a warning below.
2644       do_warning = (caller == NULL) || caller->class_loader() != cl;
2645     }
2646   }
2647 
2648 
2649   for (int index = 0; index < nMethods; index++) {
2650     const char* meth_name = methods[index].name;
2651     const char* meth_sig = methods[index].signature;
2652     int meth_name_len = (int)strlen(meth_name);
2653 
2654     // The class should have been loaded (we have an instance of the class
2655     // passed in) so the method and signature should already be in the symbol
2656     // table.  If they're not there, the method doesn't exist.
2657     TempNewSymbol  name = SymbolTable::probe(meth_name, meth_name_len);
2658     TempNewSymbol  signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
2659 
2660     if (name == NULL || signature == NULL) {
2661       ResourceMark rm(THREAD);
2662       stringStream st;
2663       st.print("Method %s.%s%s not found", k->external_name(), meth_name, meth_sig);
2664       // Must return negative value on failure
2665       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
2666     }
2667 
2668     if (do_warning) {
2669       ResourceMark rm(THREAD);
2670       log_warning(jni, resolve)("Re-registering of platform native method: %s.%s%s "
2671               "from code in a different classloader", k->external_name(), meth_name, meth_sig);
2672     }
2673 
2674     bool res = Method::register_native(k, name, signature,
2675                                        (address) methods[index].fnPtr, THREAD);
2676     if (!res) {
2677       ret = -1;
2678       break;
2679     }
2680   }
2681   return ret;
2682 JNI_END
2683 
2684 
2685 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
2686  HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(env, clazz);
2687   Klass* k   = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2688   //%note jni_2
2689   if (k->is_instance_klass()) {
2690     for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
2691       Method* m = InstanceKlass::cast(k)->methods()->at(index);
2692       if (m->is_native()) {
2693         m->clear_native_function();
2694         m->set_signature_handler(NULL);
2695       }
2696     }
2697   }
2698  HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(0);
2699   return 0;
2700 JNI_END
2701 
2702 //
2703 // Monitor functions
2704 //
2705 
2706 DT_RETURN_MARK_DECL(MonitorEnter, jint
2707                     , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
2708 
2709 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
2710  HOTSPOT_JNI_MONITORENTER_ENTRY(env, jobj);
2711   jint ret = JNI_ERR;
2712   DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
2713 
2714   // If the object is null, we can't do anything with it
2715   if (jobj == NULL) {
2716     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
2717   }
2718 
2719   Handle obj(thread, JNIHandles::resolve_non_null(jobj));
2720   ObjectSynchronizer::jni_enter(obj, thread);
2721   ret = JNI_OK;
2722   return ret;
2723 JNI_END
2724 
2725 DT_RETURN_MARK_DECL(MonitorExit, jint
2726                     , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
2727 
2728 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
2729  HOTSPOT_JNI_MONITOREXIT_ENTRY(env, jobj);
2730   jint ret = JNI_ERR;
2731   DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
2732 
2733   // Don't do anything with a null object
2734   if (jobj == NULL) {
2735     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
2736   }
2737 
2738   Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
2739   ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
2740 
2741   ret = JNI_OK;
2742   return ret;
2743 JNI_END
2744 
2745 //
2746 // Extensions
2747 //
2748 
2749 DT_VOID_RETURN_MARK_DECL(GetStringRegion
2750                          , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
2751 
2752 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
2753  HOTSPOT_JNI_GETSTRINGREGION_ENTRY(env, string, start, len, buf);
2754   DT_VOID_RETURN_MARK(GetStringRegion);
2755   oop s = JNIHandles::resolve_non_null(string);
2756   typeArrayOop s_value = java_lang_String::value(s);
2757   int s_len = java_lang_String::length(s, s_value);
2758   if (start < 0 || len < 0 || start > s_len - len) {
2759     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
2760   } else {
2761     if (len > 0) {
2762       bool is_latin1 = java_lang_String::is_latin1(s);
2763       if (!is_latin1) {
2764         ArrayAccess<>::arraycopy_to_native(s_value, typeArrayOopDesc::element_offset<jchar>(start),
2765                                            buf, len);
2766       } else {
2767         for (int i = 0; i < len; i++) {
2768           buf[i] = ((jchar) s_value->byte_at(i + start)) & 0xff;
2769         }
2770       }
2771     }
2772   }
2773 JNI_END
2774 
2775 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
2776                          , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
2777 
2778 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
2779  HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(env, string, start, len, buf);
2780   DT_VOID_RETURN_MARK(GetStringUTFRegion);
2781   oop s = JNIHandles::resolve_non_null(string);
2782   typeArrayOop s_value = java_lang_String::value(s);
2783   int s_len = java_lang_String::length(s, s_value);
2784   if (start < 0 || len < 0 || start > s_len - len) {
2785     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
2786   } else {
2787     //%note jni_7
2788     if (len > 0) {
2789       // Assume the buffer is large enough as the JNI spec. does not require user error checking
2790       java_lang_String::as_utf8_string(s, s_value, start, len, buf, INT_MAX);
2791       // as_utf8_string null-terminates the result string
2792     } else {
2793       // JDK null-terminates the buffer even in len is zero
2794       if (buf != NULL) {
2795         buf[0] = 0;
2796       }
2797     }
2798   }
2799 JNI_END
2800 
2801 static oop lock_gc_or_pin_object(JavaThread* thread, jobject obj) {
2802   if (Universe::heap()->supports_object_pinning()) {
2803     const oop o = JNIHandles::resolve_non_null(obj);
2804     return Universe::heap()->pin_object(thread, o);
2805   } else {
2806     GCLocker::lock_critical(thread);
2807     return JNIHandles::resolve_non_null(obj);
2808   }
2809 }
2810 
2811 static void unlock_gc_or_unpin_object(JavaThread* thread, jobject obj) {
2812   if (Universe::heap()->supports_object_pinning()) {
2813     const oop o = JNIHandles::resolve_non_null(obj);
2814     return Universe::heap()->unpin_object(thread, o);
2815   } else {
2816     GCLocker::unlock_critical(thread);
2817   }
2818 }
2819 
2820 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
2821  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(env, array, (uintptr_t *) isCopy);
2822   if (isCopy != NULL) {
2823     *isCopy = JNI_FALSE;
2824   }
2825   oop a = lock_gc_or_pin_object(thread, array);
2826   assert(a->is_typeArray(), "Primitive array only");
2827   BasicType type = TypeArrayKlass::cast(a->klass())->element_type();
2828   void* ret = arrayOop(a)->base(type);
2829  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(ret);
2830   return ret;
2831 JNI_END
2832 
2833 
2834 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
2835   HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(env, array, carray, mode);
2836   unlock_gc_or_unpin_object(thread, array);
2837 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN();
2838 JNI_END
2839 
2840 
2841 static typeArrayOop lock_gc_or_pin_string_value(JavaThread* thread, oop str) {
2842   if (Universe::heap()->supports_object_pinning()) {
2843     // Forbid deduplication before obtaining the value array, to prevent
2844     // deduplication from replacing the value array while setting up or in
2845     // the critical section.  That would lead to the release operation
2846     // unpinning the wrong object.
2847     if (StringDedup::is_enabled()) {
2848       NoSafepointVerifier nsv;
2849       StringDedup::forbid_deduplication(str);
2850     }
2851     typeArrayOop s_value = java_lang_String::value(str);
2852     return (typeArrayOop) Universe::heap()->pin_object(thread, s_value);
2853   } else {
2854     Handle h(thread, str);      // Handlize across potential safepoint.
2855     GCLocker::lock_critical(thread);
2856     return java_lang_String::value(h());
2857   }
2858 }
2859 
2860 static void unlock_gc_or_unpin_string_value(JavaThread* thread, oop str) {
2861   if (Universe::heap()->supports_object_pinning()) {
2862     typeArrayOop s_value = java_lang_String::value(str);
2863     Universe::heap()->unpin_object(thread, s_value);
2864   } else {
2865     GCLocker::unlock_critical(thread);
2866   }
2867 }
2868 
2869 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
2870   HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(env, string, (uintptr_t *) isCopy);
2871   oop s = JNIHandles::resolve_non_null(string);
2872   jchar* ret;
2873   if (!java_lang_String::is_latin1(s)) {
2874     typeArrayOop s_value = lock_gc_or_pin_string_value(thread, s);
2875     ret = (jchar*) s_value->base(T_CHAR);
2876     if (isCopy != NULL) *isCopy = JNI_FALSE;
2877   } else {
2878     // Inflate latin1 encoded string to UTF16
2879     typeArrayOop s_value = java_lang_String::value(s);
2880     int s_len = java_lang_String::length(s, s_value);
2881     ret = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal);  // add one for zero termination
2882     /* JNI Specification states return NULL on OOM */
2883     if (ret != NULL) {
2884       for (int i = 0; i < s_len; i++) {
2885         ret[i] = ((jchar) s_value->byte_at(i)) & 0xff;
2886       }
2887       ret[s_len] = 0;
2888     }
2889     if (isCopy != NULL) *isCopy = JNI_TRUE;
2890   }
2891  HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN((uint16_t *) ret);
2892   return ret;
2893 JNI_END
2894 
2895 
2896 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
2897   HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(env, str, (uint16_t *) chars);
2898   oop s = JNIHandles::resolve_non_null(str);
2899   bool is_latin1 = java_lang_String::is_latin1(s);
2900   if (is_latin1) {
2901     // For latin1 string, free jchar array allocated by earlier call to GetStringCritical.
2902     // This assumes that ReleaseStringCritical bookends GetStringCritical.
2903     FREE_C_HEAP_ARRAY(jchar, chars);
2904   } else {
2905     // For non-latin1 string, drop the associated gc-locker/pin.
2906     unlock_gc_or_unpin_string_value(thread, s);
2907   }
2908 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN();
2909 JNI_END
2910 
2911 
2912 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
2913   HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(env, ref);
2914   Handle ref_handle(thread, JNIHandles::resolve(ref));
2915   jweak ret = JNIHandles::make_weak_global(ref_handle, AllocFailStrategy::RETURN_NULL);
2916   if (ret == NULL) {
2917     THROW_OOP_(Universe::out_of_memory_error_c_heap(), NULL);
2918   }
2919   HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(ret);
2920   return ret;
2921 JNI_END
2922 
2923 // Must be JNI_ENTRY (with HandleMark)
2924 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
2925   HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(env, ref);
2926   JNIHandles::destroy_weak_global(ref);
2927   HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN();
2928 JNI_END
2929 
2930 
2931 JNI_ENTRY_NO_PRESERVE(jboolean, jni_ExceptionCheck(JNIEnv *env))
2932  HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(env);
2933   jni_check_async_exceptions(thread);
2934   jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
2935  HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(ret);
2936   return ret;
2937 JNI_END
2938 
2939 
2940 // Initialization state for three routines below relating to
2941 // java.nio.DirectBuffers
2942 static          int directBufferSupportInitializeStarted = 0;
2943 static volatile int directBufferSupportInitializeEnded   = 0;
2944 static volatile int directBufferSupportInitializeFailed  = 0;
2945 static jclass    bufferClass                 = NULL;
2946 static jclass    directBufferClass           = NULL;
2947 static jclass    directByteBufferClass       = NULL;
2948 static jmethodID directByteBufferConstructor = NULL;
2949 static jfieldID  directBufferAddressField    = NULL;
2950 static jfieldID  bufferCapacityField         = NULL;
2951 
2952 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
2953   Handle loader;            // null (bootstrap) loader
2954   Handle protection_domain; // null protection domain
2955 
2956   TempNewSymbol sym = SymbolTable::new_symbol(name);
2957   jclass result =  find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
2958 
2959   if (log_is_enabled(Debug, class, resolve) && result != NULL) {
2960     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
2961   }
2962   return result;
2963 }
2964 
2965 // These lookups are done with the NULL (bootstrap) ClassLoader to
2966 // circumvent any security checks that would be done by jni_FindClass.
2967 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
2968 {
2969   if ((bufferClass           = lookupOne(env, "java/nio/Buffer", thread))           == NULL) { return false; }
2970   if ((directBufferClass     = lookupOne(env, "sun/nio/ch/DirectBuffer", thread))   == NULL) { return false; }
2971   if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
2972   return true;
2973 }
2974 JNI_END
2975 
2976 
2977 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
2978   if (directBufferSupportInitializeFailed) {
2979     return false;
2980   }
2981 
2982   if (Atomic::cmpxchg(&directBufferSupportInitializeStarted, 0, 1) == 0) {
2983     if (!lookupDirectBufferClasses(env)) {
2984       directBufferSupportInitializeFailed = 1;
2985       return false;
2986     }
2987 
2988     // Make global references for these
2989     bufferClass           = (jclass) env->NewGlobalRef(bufferClass);
2990     directBufferClass     = (jclass) env->NewGlobalRef(directBufferClass);
2991     directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
2992 
2993     // Global refs will be NULL if out-of-memory (no exception is pending)
2994     if (bufferClass == NULL || directBufferClass == NULL || directByteBufferClass == NULL) {
2995       directBufferSupportInitializeFailed = 1;
2996       return false;
2997     }
2998 
2999     // Get needed field and method IDs
3000     directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
3001     if (env->ExceptionCheck()) {
3002       env->ExceptionClear();
3003       directBufferSupportInitializeFailed = 1;
3004       return false;
3005     }
3006     directBufferAddressField    = env->GetFieldID(bufferClass, "address", "J");
3007     if (env->ExceptionCheck()) {
3008       env->ExceptionClear();
3009       directBufferSupportInitializeFailed = 1;
3010       return false;
3011     }
3012     bufferCapacityField         = env->GetFieldID(bufferClass, "capacity", "I");
3013     if (env->ExceptionCheck()) {
3014       env->ExceptionClear();
3015       directBufferSupportInitializeFailed = 1;
3016       return false;
3017     }
3018 
3019     if ((directByteBufferConstructor == NULL) ||
3020         (directBufferAddressField    == NULL) ||
3021         (bufferCapacityField         == NULL)) {
3022       directBufferSupportInitializeFailed = 1;
3023       return false;
3024     }
3025 
3026     directBufferSupportInitializeEnded = 1;
3027   } else {
3028     while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
3029       os::naked_yield();
3030     }
3031   }
3032 
3033   return !directBufferSupportInitializeFailed;
3034 }
3035 
3036 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
3037 {
3038   // thread_from_jni_environment() will block if VM is gone.
3039   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3040 
3041  HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(env, address, capacity);
3042 
3043   if (!directBufferSupportInitializeEnded) {
3044     if (!initializeDirectBufferSupport(env, thread)) {
3045       HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(NULL);
3046       return NULL;
3047     }
3048   }
3049 
3050   // Being paranoid about accidental sign extension on address
3051   jlong addr = (jlong) ((uintptr_t) address);
3052   // NOTE that package-private DirectByteBuffer constructor currently
3053   // takes int capacity
3054   jint  cap  = (jint)  capacity;
3055   jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
3056   HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(ret);
3057   return ret;
3058 }
3059 
3060 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
3061                     , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
3062 
3063 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
3064 {
3065   // thread_from_jni_environment() will block if VM is gone.
3066   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3067 
3068   HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(env, buf);
3069   void* ret = NULL;
3070   DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
3071 
3072   if (!directBufferSupportInitializeEnded) {
3073     if (!initializeDirectBufferSupport(env, thread)) {
3074       return 0;
3075     }
3076   }
3077 
3078   if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
3079     return 0;
3080   }
3081 
3082   ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
3083   return ret;
3084 }
3085 
3086 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
3087                     , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
3088 
3089 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
3090 {
3091   // thread_from_jni_environment() will block if VM is gone.
3092   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3093 
3094   HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(env, buf);
3095   jlong ret = -1;
3096   DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
3097 
3098   if (!directBufferSupportInitializeEnded) {
3099     if (!initializeDirectBufferSupport(env, thread)) {
3100       ret = 0;
3101       return ret;
3102     }
3103   }
3104 
3105   if (buf == NULL) {
3106     return -1;
3107   }
3108 
3109   if (!env->IsInstanceOf(buf, directBufferClass)) {
3110     return -1;
3111   }
3112 
3113   // NOTE that capacity is currently an int in the implementation
3114   ret = env->GetIntField(buf, bufferCapacityField);
3115   return ret;
3116 }
3117 
3118 
3119 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
3120   HOTSPOT_JNI_GETVERSION_ENTRY(env);
3121   HOTSPOT_JNI_GETVERSION_RETURN(CurrentVersion);
3122   return CurrentVersion;
3123 JNI_END
3124 
3125 extern struct JavaVM_ main_vm;
3126 
3127 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
3128   HOTSPOT_JNI_GETJAVAVM_ENTRY(env, (void **) vm);
3129   *vm  = (JavaVM *)(&main_vm);
3130   HOTSPOT_JNI_GETJAVAVM_RETURN(JNI_OK);
3131   return JNI_OK;
3132 JNI_END
3133 
3134 
3135 JNI_ENTRY(jobject, jni_GetModule(JNIEnv* env, jclass clazz))
3136   return Modules::get_module(clazz, THREAD);
3137 JNI_END
3138 
3139 
3140 // Structure containing all jni functions
3141 struct JNINativeInterface_ jni_NativeInterface = {
3142     NULL,
3143     NULL,
3144     NULL,
3145 
3146     NULL,
3147 
3148     jni_GetVersion,
3149 
3150     jni_DefineClass,
3151     jni_FindClass,
3152 
3153     jni_FromReflectedMethod,
3154     jni_FromReflectedField,
3155 
3156     jni_ToReflectedMethod,
3157 
3158     jni_GetSuperclass,
3159     jni_IsAssignableFrom,
3160 
3161     jni_ToReflectedField,
3162 
3163     jni_Throw,
3164     jni_ThrowNew,
3165     jni_ExceptionOccurred,
3166     jni_ExceptionDescribe,
3167     jni_ExceptionClear,
3168     jni_FatalError,
3169 
3170     jni_PushLocalFrame,
3171     jni_PopLocalFrame,
3172 
3173     jni_NewGlobalRef,
3174     jni_DeleteGlobalRef,
3175     jni_DeleteLocalRef,
3176     jni_IsSameObject,
3177 
3178     jni_NewLocalRef,
3179     jni_EnsureLocalCapacity,
3180 
3181     jni_AllocObject,
3182     jni_NewObject,
3183     jni_NewObjectV,
3184     jni_NewObjectA,
3185 
3186     jni_GetObjectClass,
3187     jni_IsInstanceOf,
3188 
3189     jni_GetMethodID,
3190 
3191     jni_CallObjectMethod,
3192     jni_CallObjectMethodV,
3193     jni_CallObjectMethodA,
3194     jni_CallBooleanMethod,
3195     jni_CallBooleanMethodV,
3196     jni_CallBooleanMethodA,
3197     jni_CallByteMethod,
3198     jni_CallByteMethodV,
3199     jni_CallByteMethodA,
3200     jni_CallCharMethod,
3201     jni_CallCharMethodV,
3202     jni_CallCharMethodA,
3203     jni_CallShortMethod,
3204     jni_CallShortMethodV,
3205     jni_CallShortMethodA,
3206     jni_CallIntMethod,
3207     jni_CallIntMethodV,
3208     jni_CallIntMethodA,
3209     jni_CallLongMethod,
3210     jni_CallLongMethodV,
3211     jni_CallLongMethodA,
3212     jni_CallFloatMethod,
3213     jni_CallFloatMethodV,
3214     jni_CallFloatMethodA,
3215     jni_CallDoubleMethod,
3216     jni_CallDoubleMethodV,
3217     jni_CallDoubleMethodA,
3218     jni_CallVoidMethod,
3219     jni_CallVoidMethodV,
3220     jni_CallVoidMethodA,
3221 
3222     jni_CallNonvirtualObjectMethod,
3223     jni_CallNonvirtualObjectMethodV,
3224     jni_CallNonvirtualObjectMethodA,
3225     jni_CallNonvirtualBooleanMethod,
3226     jni_CallNonvirtualBooleanMethodV,
3227     jni_CallNonvirtualBooleanMethodA,
3228     jni_CallNonvirtualByteMethod,
3229     jni_CallNonvirtualByteMethodV,
3230     jni_CallNonvirtualByteMethodA,
3231     jni_CallNonvirtualCharMethod,
3232     jni_CallNonvirtualCharMethodV,
3233     jni_CallNonvirtualCharMethodA,
3234     jni_CallNonvirtualShortMethod,
3235     jni_CallNonvirtualShortMethodV,
3236     jni_CallNonvirtualShortMethodA,
3237     jni_CallNonvirtualIntMethod,
3238     jni_CallNonvirtualIntMethodV,
3239     jni_CallNonvirtualIntMethodA,
3240     jni_CallNonvirtualLongMethod,
3241     jni_CallNonvirtualLongMethodV,
3242     jni_CallNonvirtualLongMethodA,
3243     jni_CallNonvirtualFloatMethod,
3244     jni_CallNonvirtualFloatMethodV,
3245     jni_CallNonvirtualFloatMethodA,
3246     jni_CallNonvirtualDoubleMethod,
3247     jni_CallNonvirtualDoubleMethodV,
3248     jni_CallNonvirtualDoubleMethodA,
3249     jni_CallNonvirtualVoidMethod,
3250     jni_CallNonvirtualVoidMethodV,
3251     jni_CallNonvirtualVoidMethodA,
3252 
3253     jni_GetFieldID,
3254 
3255     jni_GetObjectField,
3256     jni_GetBooleanField,
3257     jni_GetByteField,
3258     jni_GetCharField,
3259     jni_GetShortField,
3260     jni_GetIntField,
3261     jni_GetLongField,
3262     jni_GetFloatField,
3263     jni_GetDoubleField,
3264 
3265     jni_SetObjectField,
3266     jni_SetBooleanField,
3267     jni_SetByteField,
3268     jni_SetCharField,
3269     jni_SetShortField,
3270     jni_SetIntField,
3271     jni_SetLongField,
3272     jni_SetFloatField,
3273     jni_SetDoubleField,
3274 
3275     jni_GetStaticMethodID,
3276 
3277     jni_CallStaticObjectMethod,
3278     jni_CallStaticObjectMethodV,
3279     jni_CallStaticObjectMethodA,
3280     jni_CallStaticBooleanMethod,
3281     jni_CallStaticBooleanMethodV,
3282     jni_CallStaticBooleanMethodA,
3283     jni_CallStaticByteMethod,
3284     jni_CallStaticByteMethodV,
3285     jni_CallStaticByteMethodA,
3286     jni_CallStaticCharMethod,
3287     jni_CallStaticCharMethodV,
3288     jni_CallStaticCharMethodA,
3289     jni_CallStaticShortMethod,
3290     jni_CallStaticShortMethodV,
3291     jni_CallStaticShortMethodA,
3292     jni_CallStaticIntMethod,
3293     jni_CallStaticIntMethodV,
3294     jni_CallStaticIntMethodA,
3295     jni_CallStaticLongMethod,
3296     jni_CallStaticLongMethodV,
3297     jni_CallStaticLongMethodA,
3298     jni_CallStaticFloatMethod,
3299     jni_CallStaticFloatMethodV,
3300     jni_CallStaticFloatMethodA,
3301     jni_CallStaticDoubleMethod,
3302     jni_CallStaticDoubleMethodV,
3303     jni_CallStaticDoubleMethodA,
3304     jni_CallStaticVoidMethod,
3305     jni_CallStaticVoidMethodV,
3306     jni_CallStaticVoidMethodA,
3307 
3308     jni_GetStaticFieldID,
3309 
3310     jni_GetStaticObjectField,
3311     jni_GetStaticBooleanField,
3312     jni_GetStaticByteField,
3313     jni_GetStaticCharField,
3314     jni_GetStaticShortField,
3315     jni_GetStaticIntField,
3316     jni_GetStaticLongField,
3317     jni_GetStaticFloatField,
3318     jni_GetStaticDoubleField,
3319 
3320     jni_SetStaticObjectField,
3321     jni_SetStaticBooleanField,
3322     jni_SetStaticByteField,
3323     jni_SetStaticCharField,
3324     jni_SetStaticShortField,
3325     jni_SetStaticIntField,
3326     jni_SetStaticLongField,
3327     jni_SetStaticFloatField,
3328     jni_SetStaticDoubleField,
3329 
3330     jni_NewString,
3331     jni_GetStringLength,
3332     jni_GetStringChars,
3333     jni_ReleaseStringChars,
3334 
3335     jni_NewStringUTF,
3336     jni_GetStringUTFLength,
3337     jni_GetStringUTFChars,
3338     jni_ReleaseStringUTFChars,
3339 
3340     jni_GetArrayLength,
3341 
3342     jni_NewObjectArray,
3343     jni_GetObjectArrayElement,
3344     jni_SetObjectArrayElement,
3345 
3346     jni_NewBooleanArray,
3347     jni_NewByteArray,
3348     jni_NewCharArray,
3349     jni_NewShortArray,
3350     jni_NewIntArray,
3351     jni_NewLongArray,
3352     jni_NewFloatArray,
3353     jni_NewDoubleArray,
3354 
3355     jni_GetBooleanArrayElements,
3356     jni_GetByteArrayElements,
3357     jni_GetCharArrayElements,
3358     jni_GetShortArrayElements,
3359     jni_GetIntArrayElements,
3360     jni_GetLongArrayElements,
3361     jni_GetFloatArrayElements,
3362     jni_GetDoubleArrayElements,
3363 
3364     jni_ReleaseBooleanArrayElements,
3365     jni_ReleaseByteArrayElements,
3366     jni_ReleaseCharArrayElements,
3367     jni_ReleaseShortArrayElements,
3368     jni_ReleaseIntArrayElements,
3369     jni_ReleaseLongArrayElements,
3370     jni_ReleaseFloatArrayElements,
3371     jni_ReleaseDoubleArrayElements,
3372 
3373     jni_GetBooleanArrayRegion,
3374     jni_GetByteArrayRegion,
3375     jni_GetCharArrayRegion,
3376     jni_GetShortArrayRegion,
3377     jni_GetIntArrayRegion,
3378     jni_GetLongArrayRegion,
3379     jni_GetFloatArrayRegion,
3380     jni_GetDoubleArrayRegion,
3381 
3382     jni_SetBooleanArrayRegion,
3383     jni_SetByteArrayRegion,
3384     jni_SetCharArrayRegion,
3385     jni_SetShortArrayRegion,
3386     jni_SetIntArrayRegion,
3387     jni_SetLongArrayRegion,
3388     jni_SetFloatArrayRegion,
3389     jni_SetDoubleArrayRegion,
3390 
3391     jni_RegisterNatives,
3392     jni_UnregisterNatives,
3393 
3394     jni_MonitorEnter,
3395     jni_MonitorExit,
3396 
3397     jni_GetJavaVM,
3398 
3399     jni_GetStringRegion,
3400     jni_GetStringUTFRegion,
3401 
3402     jni_GetPrimitiveArrayCritical,
3403     jni_ReleasePrimitiveArrayCritical,
3404 
3405     jni_GetStringCritical,
3406     jni_ReleaseStringCritical,
3407 
3408     jni_NewWeakGlobalRef,
3409     jni_DeleteWeakGlobalRef,
3410 
3411     jni_ExceptionCheck,
3412 
3413     jni_NewDirectByteBuffer,
3414     jni_GetDirectBufferAddress,
3415     jni_GetDirectBufferCapacity,
3416 
3417     // New 1_6 features
3418 
3419     jni_GetObjectRefType,
3420 
3421     // Module features
3422 
3423     jni_GetModule
3424 };
3425 
3426 
3427 // For jvmti use to modify jni function table.
3428 // Java threads in native contiues to run until it is transitioned
3429 // to VM at safepoint. Before the transition or before it is blocked
3430 // for safepoint it may access jni function table. VM could crash if
3431 // any java thread access the jni function table in the middle of memcpy.
3432 // To avoid this each function pointers are copied automically.
3433 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
3434   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
3435   intptr_t *a = (intptr_t *) jni_functions();
3436   intptr_t *b = (intptr_t *) new_jni_NativeInterface;
3437   for (uint i=0; i <  sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
3438     Atomic::store(a++, *b++);
3439   }
3440 }
3441 
3442 void quicken_jni_functions() {
3443   // Replace Get<Primitive>Field with fast versions
3444   if (UseFastJNIAccessors && !VerifyJNIFields && !CheckJNICalls) {
3445     address func;
3446     func = JNI_FastGetField::generate_fast_get_boolean_field();
3447     if (func != (address)-1) {
3448       jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
3449     }
3450     func = JNI_FastGetField::generate_fast_get_byte_field();
3451     if (func != (address)-1) {
3452       jni_NativeInterface.GetByteField = (GetByteField_t)func;
3453     }
3454     func = JNI_FastGetField::generate_fast_get_char_field();
3455     if (func != (address)-1) {
3456       jni_NativeInterface.GetCharField = (GetCharField_t)func;
3457     }
3458     func = JNI_FastGetField::generate_fast_get_short_field();
3459     if (func != (address)-1) {
3460       jni_NativeInterface.GetShortField = (GetShortField_t)func;
3461     }
3462     func = JNI_FastGetField::generate_fast_get_int_field();
3463     if (func != (address)-1) {
3464       jni_NativeInterface.GetIntField = (GetIntField_t)func;
3465     }
3466     func = JNI_FastGetField::generate_fast_get_long_field();
3467     if (func != (address)-1) {
3468       jni_NativeInterface.GetLongField = (GetLongField_t)func;
3469     }
3470     func = JNI_FastGetField::generate_fast_get_float_field();
3471     if (func != (address)-1) {
3472       jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
3473     }
3474     func = JNI_FastGetField::generate_fast_get_double_field();
3475     if (func != (address)-1) {
3476       jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
3477     }
3478   }
3479 }
3480 
3481 // Returns the function structure
3482 struct JNINativeInterface_* jni_functions() {
3483 #if INCLUDE_JNI_CHECK
3484   if (CheckJNICalls) return jni_functions_check();
3485 #endif // INCLUDE_JNI_CHECK
3486   return &jni_NativeInterface;
3487 }
3488 
3489 // Returns the function structure
3490 struct JNINativeInterface_* jni_functions_nocheck() {
3491   return &jni_NativeInterface;
3492 }
3493 
3494 static void post_thread_start_event(const JavaThread* jt) {
3495   assert(jt != NULL, "invariant");
3496   EventThreadStart event;
3497   if (event.should_commit()) {
3498     event.set_thread(JFR_THREAD_ID(jt));
3499     event.set_parentThread((traceid)0);
3500 #if INCLUDE_JFR
3501     if (EventThreadStart::is_stacktrace_enabled()) {
3502       jt->jfr_thread_local()->set_cached_stack_trace_id((traceid)0);
3503       event.commit();
3504       jt->jfr_thread_local()->clear_cached_stack_trace();
3505     } else
3506 #endif
3507     {
3508       event.commit();
3509     }
3510   }
3511 }
3512 
3513 // Invocation API
3514 
3515 
3516 // Forward declaration
3517 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
3518 
3519 // Global invocation API vars
3520 volatile int vm_created = 0;
3521 // Indicate whether it is safe to recreate VM. Recreation is only
3522 // possible after a failed initial creation attempt in some cases.
3523 volatile int safe_to_recreate_vm = 1;
3524 struct JavaVM_ main_vm = {&jni_InvokeInterface};
3525 
3526 
3527 #define JAVASTACKSIZE (400 * 1024)    /* Default size of a thread java stack */
3528 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
3529 
3530 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
3531                     , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
3532 
3533 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
3534   HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(args_);
3535   JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
3536   jint ret = JNI_ERR;
3537   DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
3538 
3539   if (Threads::is_supported_jni_version(args->version)) {
3540     ret = JNI_OK;
3541   }
3542   // 1.1 style no longer supported in hotspot.
3543   // According the JNI spec, we should update args->version on return.
3544   // We also use the structure to communicate with launcher about default
3545   // stack size.
3546   if (args->version == JNI_VERSION_1_1) {
3547     args->version = JNI_VERSION_1_2;
3548     // javaStackSize is int in arguments structure
3549     assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
3550     args->javaStackSize = (jint)(ThreadStackSize * K);
3551   }
3552   return ret;
3553 }
3554 
3555 DT_RETURN_MARK_DECL(CreateJavaVM, jint
3556                     , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
3557 
3558 static jint JNI_CreateJavaVM_inner(JavaVM **vm, void **penv, void *args) {
3559   HOTSPOT_JNI_CREATEJAVAVM_ENTRY((void **) vm, penv, args);
3560 
3561   jint result = JNI_ERR;
3562   DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
3563 
3564   // We're about to use Atomic::xchg for synchronization.  Some Zero
3565   // platforms use the GCC builtin __sync_lock_test_and_set for this,
3566   // but __sync_lock_test_and_set is not guaranteed to do what we want
3567   // on all architectures.  So we check it works before relying on it.
3568 #if defined(ZERO) && defined(ASSERT)
3569   {
3570     jint a = 0xcafebabe;
3571     jint b = Atomic::xchg(&a, (jint) 0xdeadbeef);
3572     void *c = &a;
3573     void *d = Atomic::xchg(&c, &b);
3574     assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
3575     assert(c == &b && d == &a, "Atomic::xchg() works");
3576   }
3577 #endif // ZERO && ASSERT
3578 
3579   // At the moment it's only possible to have one Java VM,
3580   // since some of the runtime state is in global variables.
3581 
3582   // We cannot use our mutex locks here, since they only work on
3583   // Threads. We do an atomic compare and exchange to ensure only
3584   // one thread can call this method at a time
3585 
3586   // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
3587   // the add/dec implementations are dependent on whether we are running
3588   // on a multiprocessor Atomic::xchg does not have this problem.
3589   if (Atomic::xchg(&vm_created, 1) == 1) {
3590     return JNI_EEXIST;   // already created, or create attempt in progress
3591   }
3592 
3593   // If a previous creation attempt failed but can be retried safely,
3594   // then safe_to_recreate_vm will have been reset to 1 after being
3595   // cleared here. If a previous creation attempt succeeded and we then
3596   // destroyed that VM, we will be prevented from trying to recreate
3597   // the VM in the same process, as the value will still be 0.
3598   if (Atomic::xchg(&safe_to_recreate_vm, 0) == 0) {
3599     return JNI_ERR;
3600   }
3601 
3602   assert(vm_created == 1, "vm_created is true during the creation");
3603 
3604   /**
3605    * Certain errors during initialization are recoverable and do not
3606    * prevent this method from being called again at a later time
3607    * (perhaps with different arguments).  However, at a certain
3608    * point during initialization if an error occurs we cannot allow
3609    * this function to be called again (or it will crash).  In those
3610    * situations, the 'canTryAgain' flag is set to false, which atomically
3611    * sets safe_to_recreate_vm to 1, such that any new call to
3612    * JNI_CreateJavaVM will immediately fail using the above logic.
3613    */
3614   bool can_try_again = true;
3615 
3616   result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
3617   if (result == JNI_OK) {
3618     JavaThread *thread = JavaThread::current();
3619     assert(!thread->has_pending_exception(), "should have returned not OK");
3620     /* thread is thread_in_vm here */
3621     *vm = (JavaVM *)(&main_vm);
3622     *(JNIEnv**)penv = thread->jni_environment();
3623 
3624 #if INCLUDE_JVMCI
3625     if (EnableJVMCI) {
3626       if (UseJVMCICompiler) {
3627         // JVMCI is initialized on a CompilerThread
3628         if (BootstrapJVMCI) {
3629           JavaThread* THREAD = thread; // For exception macros.
3630           JVMCICompiler* compiler = JVMCICompiler::instance(true, CATCH);
3631           compiler->bootstrap(THREAD);
3632           if (HAS_PENDING_EXCEPTION) {
3633             HandleMark hm(THREAD);
3634             vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION));
3635           }
3636         }
3637       }
3638     }
3639 #endif
3640 
3641     // Notify JVMTI
3642     if (JvmtiExport::should_post_thread_life()) {
3643        JvmtiExport::post_thread_start(thread);
3644     }
3645 
3646     post_thread_start_event(thread);
3647 
3648 #ifndef PRODUCT
3649     if (ReplayCompiles) ciReplay::replay(thread);
3650 #endif
3651 
3652 #ifdef ASSERT
3653     // Some platforms (like Win*) need a wrapper around these test
3654     // functions in order to properly handle error conditions.
3655     if (ErrorHandlerTest != 0) {
3656       VMError::controlled_crash(ErrorHandlerTest);
3657     }
3658 #endif
3659 
3660     // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
3661     ThreadStateTransition::transition_from_vm(thread, _thread_in_native);
3662     MACOS_AARCH64_ONLY(thread->enable_wx(WXExec));
3663   } else {
3664     // If create_vm exits because of a pending exception, exit with that
3665     // exception.  In the future when we figure out how to reclaim memory,
3666     // we may be able to exit with JNI_ERR and allow the calling application
3667     // to continue.
3668     if (Universe::is_fully_initialized()) {
3669       // otherwise no pending exception possible - VM will already have aborted
3670       JavaThread* THREAD = JavaThread::current(); // For exception macros.
3671       if (HAS_PENDING_EXCEPTION) {
3672         HandleMark hm(THREAD);
3673         vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION));
3674       }
3675     }
3676 
3677     if (can_try_again) {
3678       // reset safe_to_recreate_vm to 1 so that retrial would be possible
3679       safe_to_recreate_vm = 1;
3680     }
3681 
3682     // Creation failed. We must reset vm_created
3683     *vm = 0;
3684     *(JNIEnv**)penv = 0;
3685     // reset vm_created last to avoid race condition. Use OrderAccess to
3686     // control both compiler and architectural-based reordering.
3687     Atomic::release_store(&vm_created, 0);
3688   }
3689 
3690   // Flush stdout and stderr before exit.
3691   fflush(stdout);
3692   fflush(stderr);
3693 
3694   return result;
3695 
3696 }
3697 
3698 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
3699   jint result = JNI_ERR;
3700   // On Windows, let CreateJavaVM run with SEH protection
3701 #if defined(_WIN32) && !defined(USE_VECTORED_EXCEPTION_HANDLING)
3702   __try {
3703 #endif
3704     result = JNI_CreateJavaVM_inner(vm, penv, args);
3705 #if defined(_WIN32) && !defined(USE_VECTORED_EXCEPTION_HANDLING)
3706   } __except(topLevelExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) {
3707     // Nothing to do.
3708   }
3709 #endif
3710   return result;
3711 }
3712 
3713 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
3714   HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY((void **) vm_buf, bufLen, (uintptr_t *) numVMs);
3715 
3716   if (vm_created == 1) {
3717     if (numVMs != NULL) *numVMs = 1;
3718     if (bufLen > 0)     *vm_buf = (JavaVM *)(&main_vm);
3719   } else {
3720     if (numVMs != NULL) *numVMs = 0;
3721   }
3722   HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(JNI_OK);
3723   return JNI_OK;
3724 }
3725 
3726 extern "C" {
3727 
3728 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
3729                     , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
3730 
3731 static jint JNICALL jni_DestroyJavaVM_inner(JavaVM *vm) {
3732   HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(vm);
3733   jint res = JNI_ERR;
3734   DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
3735 
3736   if (vm_created == 0) {
3737     res = JNI_ERR;
3738     return res;
3739   }
3740 
3741   JNIEnv *env;
3742   JavaVMAttachArgs destroyargs;
3743   destroyargs.version = CurrentVersion;
3744   destroyargs.name = (char *)"DestroyJavaVM";
3745   destroyargs.group = NULL;
3746   res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
3747   if (res != JNI_OK) {
3748     return res;
3749   }
3750 
3751   // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
3752   JavaThread* thread = JavaThread::current();
3753 
3754   // We are going to VM, change W^X state to the expected one.
3755   MACOS_AARCH64_ONLY(WXMode oldmode = thread->enable_wx(WXWrite));
3756 
3757   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
3758   Threads::destroy_vm();
3759   // Don't bother restoring thread state, VM is gone.
3760   vm_created = 0;
3761   return JNI_OK;
3762 }
3763 
3764 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
3765   jint result = JNI_ERR;
3766   // On Windows, we need SEH protection
3767 #if defined(_WIN32) && !defined(USE_VECTORED_EXCEPTION_HANDLING)
3768   __try {
3769 #endif
3770     result = jni_DestroyJavaVM_inner(vm);
3771 #if defined(_WIN32) && !defined(USE_VECTORED_EXCEPTION_HANDLING)
3772   } __except(topLevelExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) {
3773     // Nothing to do.
3774   }
3775 #endif
3776   return result;
3777 }
3778 
3779 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
3780   JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
3781 
3782   // Check below commented out from JDK1.2fcs as well
3783   /*
3784   if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
3785     return JNI_EVERSION;
3786   }
3787   */
3788 
3789   Thread* t = Thread::current_or_null();
3790   if (t != NULL) {
3791     // If executing from an atexit hook we may be in the VMThread.
3792     if (t->is_Java_thread()) {
3793       // If the thread has been attached this operation is a no-op
3794       *(JNIEnv**)penv = JavaThread::cast(t)->jni_environment();
3795       return JNI_OK;
3796     } else {
3797       return JNI_ERR;
3798     }
3799   }
3800 
3801   // Create a thread and mark it as attaching so it will be skipped by the
3802   // ThreadsListEnumerator - see CR 6404306
3803   JavaThread* thread = new JavaThread(true);
3804 
3805   // Set correct safepoint info. The thread is going to call into Java when
3806   // initializing the Java level thread object. Hence, the correct state must
3807   // be set in order for the Safepoint code to deal with it correctly.
3808   thread->set_thread_state(_thread_in_vm);
3809   thread->record_stack_base_and_size();
3810   thread->register_thread_stack_with_NMT();
3811   thread->initialize_thread_current();
3812   MACOS_AARCH64_ONLY(thread->init_wx());
3813 
3814   if (!os::create_attached_thread(thread)) {
3815     thread->smr_delete();
3816     return JNI_ERR;
3817   }
3818   // Enable stack overflow checks
3819   thread->stack_overflow_state()->create_stack_guard_pages();
3820 
3821   thread->initialize_tlab();
3822 
3823   thread->cache_global_variables();
3824 
3825   // This thread will not do a safepoint check, since it has
3826   // not been added to the Thread list yet.
3827   { MutexLocker ml(Threads_lock);
3828     // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
3829     // avoid this thread trying to do a GC before it is added to the thread-list
3830     thread->set_active_handles(JNIHandleBlock::allocate_block());
3831     Threads::add(thread, daemon);
3832   }
3833   // Create thread group and name info from attach arguments
3834   oop group = NULL;
3835   char* thread_name = NULL;
3836   if (args != NULL && Threads::is_supported_jni_version(args->version)) {
3837     group = JNIHandles::resolve(args->group);
3838     thread_name = args->name; // may be NULL
3839   }
3840   if (group == NULL) group = Universe::main_thread_group();
3841 
3842   // Create Java level thread object and attach it to this thread
3843   bool attach_failed = false;
3844   {
3845     EXCEPTION_MARK;
3846     HandleMark hm(THREAD);
3847     Handle thread_group(THREAD, group);
3848     thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
3849     if (HAS_PENDING_EXCEPTION) {
3850       CLEAR_PENDING_EXCEPTION;
3851       // cleanup outside the handle mark.
3852       attach_failed = true;
3853     }
3854   }
3855 
3856   if (attach_failed) {
3857     // Added missing cleanup
3858     thread->cleanup_failed_attach_current_thread(daemon);
3859     return JNI_ERR;
3860   }
3861 
3862   // mark the thread as no longer attaching
3863   // this uses a fence to push the change through so we don't have
3864   // to regrab the threads_lock
3865   thread->set_done_attaching_via_jni();
3866 
3867   // Set java thread status.
3868   java_lang_Thread::set_thread_status(thread->threadObj(),
3869               JavaThreadStatus::RUNNABLE);
3870 
3871   // Notify the debugger
3872   if (JvmtiExport::should_post_thread_life()) {
3873     JvmtiExport::post_thread_start(thread);
3874   }
3875 
3876   post_thread_start_event(thread);
3877 
3878   *(JNIEnv**)penv = thread->jni_environment();
3879 
3880   // Now leaving the VM, so change thread_state. This is normally automatically taken care
3881   // of in the JVM_ENTRY. But in this situation we have to do it manually.
3882   ThreadStateTransition::transition_from_vm(thread, _thread_in_native);
3883   MACOS_AARCH64_ONLY(thread->enable_wx(WXExec));
3884 
3885   // Perform any platform dependent FPU setup
3886   os::setup_fpu();
3887 
3888   return JNI_OK;
3889 }
3890 
3891 
3892 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
3893   HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(vm, penv, _args);
3894   if (vm_created == 0) {
3895     HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
3896     return JNI_ERR;
3897   }
3898 
3899   jint ret = attach_current_thread(vm, penv, _args, false);
3900   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(ret);
3901   return ret;
3902 }
3903 
3904 
3905 jint JNICALL jni_DetachCurrentThread(JavaVM *vm)  {
3906   HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(vm);
3907   if (vm_created == 0) {
3908     HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_ERR);
3909     return JNI_ERR;
3910   }
3911 
3912   Thread* current = Thread::current_or_null();
3913 
3914   // If the thread has already been detached the operation is a no-op
3915   if (current == NULL) {
3916     HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
3917     return JNI_OK;
3918   }
3919 
3920   // If executing from an atexit hook we may be in the VMThread.
3921   if (!current->is_Java_thread()) {
3922     HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
3923     return JNI_ERR;
3924   }
3925 
3926   VM_Exit::block_if_vm_exited();
3927 
3928   JavaThread* thread = JavaThread::cast(current);
3929   if (thread->has_last_Java_frame()) {
3930     HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
3931     // Can't detach a thread that's running java, that can't work.
3932     return JNI_ERR;
3933   }
3934 
3935   // We are going to VM, change W^X state to the expected one.
3936   MACOS_AARCH64_ONLY(thread->enable_wx(WXWrite));
3937 
3938   // Safepoint support. Have to do call-back to safepoint code, if in the
3939   // middle of a safepoint operation
3940   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
3941 
3942   // XXX: Note that JavaThread::exit() call below removes the guards on the
3943   // stack pages set up via enable_stack_{red,yellow}_zone() calls
3944   // above in jni_AttachCurrentThread. Unfortunately, while the setting
3945   // of the guards is visible in jni_AttachCurrentThread above,
3946   // the removal of the guards is buried below in JavaThread::exit()
3947   // here. The abstraction should be more symmetrically either exposed
3948   // or hidden (e.g. it could probably be hidden in the same
3949   // (platform-dependent) methods where we do alternate stack
3950   // maintenance work?)
3951   thread->exit(false, JavaThread::jni_detach);
3952   thread->smr_delete();
3953 
3954   // Go to the execute mode, the initial state of the thread on creation.
3955   // Use os interface as the thread is not a JavaThread anymore.
3956   MACOS_AARCH64_ONLY(os::current_thread_enable_wx(WXExec));
3957 
3958   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
3959   return JNI_OK;
3960 }
3961 
3962 DT_RETURN_MARK_DECL(GetEnv, jint
3963                     , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
3964 
3965 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
3966   HOTSPOT_JNI_GETENV_ENTRY(vm, penv, version);
3967   jint ret = JNI_ERR;
3968   DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
3969 
3970   if (vm_created == 0) {
3971     *penv = NULL;
3972     ret = JNI_EDETACHED;
3973     return ret;
3974   }
3975 
3976   if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
3977     return ret;
3978   }
3979 
3980 #ifndef JVMPI_VERSION_1
3981 // need these in order to be polite about older agents
3982 #define JVMPI_VERSION_1   ((jint)0x10000001)
3983 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
3984 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
3985 #endif // !JVMPI_VERSION_1
3986 
3987   Thread* thread = Thread::current_or_null();
3988   if (thread != NULL && thread->is_Java_thread()) {
3989     if (Threads::is_supported_jni_version_including_1_1(version)) {
3990       *(JNIEnv**)penv = JavaThread::cast(thread)->jni_environment();
3991       ret = JNI_OK;
3992       return ret;
3993 
3994     } else if (version == JVMPI_VERSION_1 ||
3995                version == JVMPI_VERSION_1_1 ||
3996                version == JVMPI_VERSION_1_2) {
3997       tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
3998       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
3999       ret = JNI_EVERSION;
4000       return ret;
4001     } else if (JvmtiExport::is_jvmdi_version(version)) {
4002       tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
4003       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
4004       ret = JNI_EVERSION;
4005       return ret;
4006     } else {
4007       *penv = NULL;
4008       ret = JNI_EVERSION;
4009       return ret;
4010     }
4011   } else {
4012     *penv = NULL;
4013     ret = JNI_EDETACHED;
4014     return ret;
4015   }
4016 }
4017 
4018 
4019 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
4020   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(vm, penv, _args);
4021   if (vm_created == 0) {
4022   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN((uint32_t) JNI_ERR);
4023     return JNI_ERR;
4024   }
4025 
4026   jint ret = attach_current_thread(vm, penv, _args, true);
4027   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(ret);
4028   return ret;
4029 }
4030 
4031 
4032 } // End extern "C"
4033 
4034 const struct JNIInvokeInterface_ jni_InvokeInterface = {
4035     NULL,
4036     NULL,
4037     NULL,
4038 
4039     jni_DestroyJavaVM,
4040     jni_AttachCurrentThread,
4041     jni_DetachCurrentThread,
4042     jni_GetEnv,
4043     jni_AttachCurrentThreadAsDaemon
4044 };