rev 8995 : 8046155: JEP165: Compiler Control
Summary:
Reviewed-by:

   1 /*
   2  * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2012 Red Hat, Inc.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #include "precompiled.hpp"
  27 #include "ci/ciReplay.hpp"
  28 #include "classfile/altHashing.hpp"
  29 #include "classfile/classLoader.hpp"
  30 #include "classfile/javaClasses.hpp"
  31 #include "classfile/symbolTable.hpp"
  32 #include "classfile/systemDictionary.hpp"
  33 #include "classfile/vmSymbols.hpp"
  34 #include "gc/shared/gcLocker.inline.hpp"
  35 #include "interpreter/linkResolver.hpp"
  36 #include "memory/allocation.hpp"
  37 #include "memory/allocation.inline.hpp"
  38 #include "memory/oopFactory.hpp"
  39 #include "memory/universe.inline.hpp"
  40 #include "oops/instanceKlass.hpp"
  41 #include "oops/instanceOop.hpp"
  42 #include "oops/markOop.hpp"
  43 #include "oops/method.hpp"
  44 #include "oops/objArrayKlass.hpp"
  45 #include "oops/objArrayOop.inline.hpp"
  46 #include "oops/oop.inline.hpp"
  47 #include "oops/symbol.hpp"
  48 #include "oops/typeArrayKlass.hpp"
  49 #include "oops/typeArrayOop.hpp"
  50 #include "prims/jni.h"
  51 #include "prims/jniCheck.hpp"
  52 #include "prims/jniExport.hpp"
  53 #include "prims/jniFastGetField.hpp"
  54 #include "prims/jvm.h"
  55 #include "prims/jvm_misc.hpp"
  56 #include "prims/jvmtiExport.hpp"
  57 #include "prims/jvmtiThreadState.hpp"
  58 #include "runtime/atomic.inline.hpp"
  59 #include "runtime/compilationPolicy.hpp"
  60 #include "runtime/fieldDescriptor.hpp"
  61 #include "runtime/fprofiler.hpp"
  62 #include "runtime/handles.inline.hpp"
  63 #include "runtime/interfaceSupport.hpp"
  64 #include "runtime/java.hpp"
  65 #include "runtime/javaCalls.hpp"
  66 #include "runtime/jfieldIDWorkaround.hpp"
  67 #include "runtime/orderAccess.inline.hpp"
  68 #include "runtime/reflection.hpp"
  69 #include "runtime/sharedRuntime.hpp"
  70 #include "runtime/signature.hpp"
  71 #include "runtime/thread.inline.hpp"
  72 #include "runtime/vm_operations.hpp"
  73 #include "services/memTracker.hpp"
  74 #include "services/runtimeService.hpp"
  75 #include "trace/tracing.hpp"
  76 #include "utilities/defaultStream.hpp"
  77 #include "utilities/dtrace.hpp"
  78 #include "utilities/events.hpp"
  79 #include "utilities/histogram.hpp"
  80 #include "utilities/macros.hpp"
  81 #if INCLUDE_ALL_GCS
  82 #include "gc/g1/g1SATBCardTableModRefBS.hpp"
  83 #endif // INCLUDE_ALL_GCS
  84 
  85 static jint CurrentVersion = JNI_VERSION_1_8;
  86 
  87 #ifdef _WIN32
  88 extern LONG WINAPI topLevelExceptionFilter(_EXCEPTION_POINTERS* );
  89 #endif
  90 
  91 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
  92 // '-return' probe regardless of the return path is taken out of the function.
  93 // Methods that have multiple return paths use this to avoid having to
  94 // instrument each return path.  Methods that use CHECK or THROW must use this
  95 // since those macros can cause an immedate uninstrumented return.
  96 //
  97 // In order to get the return value, a reference to the variable containing
  98 // the return value must be passed to the contructor of the object, and
  99 // the return value must be set before return (since the mark object has
 100 // a reference to it).
 101 //
 102 // Example:
 103 // DT_RETURN_MARK_DECL(SomeFunc, int);
 104 // JNI_ENTRY(int, SomeFunc, ...)
 105 //   int return_value = 0;
 106 //   DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
 107 //   foo(CHECK_0)
 108 //   return_value = 5;
 109 //   return return_value;
 110 // JNI_END
 111 #define DT_RETURN_MARK_DECL(name, type, probe)                             \
 112   DTRACE_ONLY(                                                             \
 113     class DTraceReturnProbeMark_##name {                                   \
 114      public:                                                               \
 115       const type& _ret_ref;                                                \
 116       DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {}         \
 117       ~DTraceReturnProbeMark_##name() {                                    \
 118         probe;                                                             \
 119       }                                                                    \
 120     }                                                                      \
 121   )
 122 // Void functions are simpler since there's no return value
 123 #define DT_VOID_RETURN_MARK_DECL(name, probe)                              \
 124   DTRACE_ONLY(                                                             \
 125     class DTraceReturnProbeMark_##name {                                   \
 126      public:                                                               \
 127       ~DTraceReturnProbeMark_##name() {                                    \
 128         probe;                                                             \
 129       }                                                                    \
 130     }                                                                      \
 131   )
 132 
 133 // Place these macros in the function to mark the return.  Non-void
 134 // functions need the type and address of the return value.
 135 #define DT_RETURN_MARK(name, type, ref) \
 136   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
 137 #define DT_VOID_RETURN_MARK(name) \
 138   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
 139 
 140 
 141 // Use these to select distinct code for floating-point vs. non-floating point
 142 // situations.  Used from within common macros where we need slightly
 143 // different behavior for Float/Double
 144 #define FP_SELECT_Boolean(intcode, fpcode) intcode
 145 #define FP_SELECT_Byte(intcode, fpcode)    intcode
 146 #define FP_SELECT_Char(intcode, fpcode)    intcode
 147 #define FP_SELECT_Short(intcode, fpcode)   intcode
 148 #define FP_SELECT_Object(intcode, fpcode)  intcode
 149 #define FP_SELECT_Int(intcode, fpcode)     intcode
 150 #define FP_SELECT_Long(intcode, fpcode)    intcode
 151 #define FP_SELECT_Float(intcode, fpcode)   fpcode
 152 #define FP_SELECT_Double(intcode, fpcode)  fpcode
 153 #define FP_SELECT(TypeName, intcode, fpcode) \
 154   FP_SELECT_##TypeName(intcode, fpcode)
 155 
 156 #define COMMA ,
 157 
 158 // Choose DT_RETURN_MARK macros  based on the type: float/double -> void
 159 // (dtrace doesn't do FP yet)
 160 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe)    \
 161   FP_SELECT(TypeName, \
 162     DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
 163 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
 164   FP_SELECT(TypeName, \
 165     DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
 166 
 167 
 168 // out-of-line helpers for class jfieldIDWorkaround:
 169 
 170 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
 171   if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
 172     uintptr_t as_uint = (uintptr_t) id;
 173     intptr_t offset = raw_instance_offset(id);
 174     if (is_checked_jfieldID(id)) {
 175       if (!klass_hash_ok(k, id)) {
 176         return false;
 177       }
 178     }
 179     return InstanceKlass::cast(k)->contains_field_offset(offset);
 180   } else {
 181     JNIid* result = (JNIid*) id;
 182 #ifdef ASSERT
 183     return result != NULL && result->is_static_field_id();
 184 #else
 185     return result != NULL;
 186 #endif
 187   }
 188 }
 189 
 190 
 191 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
 192   if (offset <= small_offset_mask) {
 193     Klass* field_klass = k;
 194     Klass* super_klass = field_klass->super();
 195     // With compressed oops the most super class with nonstatic fields would
 196     // be the owner of fields embedded in the header.
 197     while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
 198            InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
 199       field_klass = super_klass;   // super contains the field also
 200       super_klass = field_klass->super();
 201     }
 202     debug_only(No_Safepoint_Verifier nosafepoint;)
 203     uintptr_t klass_hash = field_klass->identity_hash();
 204     return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
 205   } else {
 206 #if 0
 207     #ifndef PRODUCT
 208     {
 209       ResourceMark rm;
 210       warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
 211     }
 212     #endif
 213 #endif
 214     return 0;
 215   }
 216 }
 217 
 218 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
 219   uintptr_t as_uint = (uintptr_t) id;
 220   intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
 221   do {
 222     debug_only(No_Safepoint_Verifier nosafepoint;)
 223     // Could use a non-blocking query for identity_hash here...
 224     if ((k->identity_hash() & klass_mask) == klass_hash)
 225       return true;
 226     k = k->super();
 227   } while (k != NULL);
 228   return false;
 229 }
 230 
 231 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
 232   guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
 233   uintptr_t as_uint = (uintptr_t) id;
 234   intptr_t offset = raw_instance_offset(id);
 235   if (VerifyJNIFields) {
 236     if (is_checked_jfieldID(id)) {
 237       guarantee(klass_hash_ok(k, id),
 238     "Bug in native code: jfieldID class must match object");
 239     } else {
 240 #if 0
 241       #ifndef PRODUCT
 242       if (Verbose) {
 243   ResourceMark rm;
 244   warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
 245       }
 246       #endif
 247 #endif
 248     }
 249   }
 250   guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
 251       "Bug in native code: jfieldID offset must address interior of object");
 252 }
 253 
 254 // Wrapper to trace JNI functions
 255 
 256 #ifdef ASSERT
 257   Histogram* JNIHistogram;
 258   static volatile jint JNIHistogram_lock = 0;
 259 
 260   class JNITraceWrapper : public StackObj {
 261    public:
 262     JNITraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) {
 263       if (TraceJNICalls) {
 264         va_list ap;
 265         va_start(ap, format);
 266         tty->print("JNI ");
 267         tty->vprint_cr(format, ap);
 268         va_end(ap);
 269       }
 270     }
 271   };
 272 
 273   class JNIHistogramElement : public HistogramElement {
 274     public:
 275      JNIHistogramElement(const char* name);
 276   };
 277 
 278   JNIHistogramElement::JNIHistogramElement(const char* elementName) {
 279     _name = elementName;
 280     uintx count = 0;
 281 
 282     while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
 283       while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
 284         count +=1;
 285         if ( (WarnOnStalledSpinLock > 0)
 286           && (count % WarnOnStalledSpinLock == 0)) {
 287           warning("JNIHistogram_lock seems to be stalled");
 288         }
 289       }
 290      }
 291 
 292 
 293     if(JNIHistogram == NULL)
 294       JNIHistogram = new Histogram("JNI Call Counts",100);
 295 
 296     JNIHistogram->add_element(this);
 297     Atomic::dec(&JNIHistogram_lock);
 298   }
 299 
 300   #define JNICountWrapper(arg)                                     \
 301      static JNIHistogramElement* e = new JNIHistogramElement(arg); \
 302       /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
 303      if (e != NULL) e->increment_count()
 304   #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
 305 #else
 306   #define JNIWrapper(arg)
 307 #endif
 308 
 309 
 310 // Implementation of JNI entries
 311 
 312 DT_RETURN_MARK_DECL(DefineClass, jclass
 313                     , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
 314 
 315 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
 316                                   const jbyte *buf, jsize bufLen))
 317   JNIWrapper("DefineClass");
 318 
 319   HOTSPOT_JNI_DEFINECLASS_ENTRY(
 320     env, (char*) name, loaderRef, (char*) buf, bufLen);
 321 
 322   jclass cls = NULL;
 323   DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
 324 
 325   TempNewSymbol class_name = NULL;
 326   // Since exceptions can be thrown, class initialization can take place
 327   // if name is NULL no check for class name in .class stream has to be made.
 328   if (name != NULL) {
 329     const int str_len = (int)strlen(name);
 330     if (str_len > Symbol::max_length()) {
 331       // It's impossible to create this class;  the name cannot fit
 332       // into the constant pool.
 333       THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
 334     }
 335     class_name = SymbolTable::new_symbol(name, CHECK_NULL);
 336   }
 337   ResourceMark rm(THREAD);
 338   ClassFileStream st((u1*) buf, bufLen, NULL);
 339   Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
 340 
 341   if (UsePerfData && !class_loader.is_null()) {
 342     // check whether the current caller thread holds the lock or not.
 343     // If not, increment the corresponding counter
 344     if (ObjectSynchronizer::
 345         query_lock_ownership((JavaThread*)THREAD, class_loader) !=
 346         ObjectSynchronizer::owner_self) {
 347       ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
 348     }
 349   }
 350   Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
 351                                                      Handle(), &st, true,
 352                                                      CHECK_NULL);
 353 
 354   if (TraceClassResolution && k != NULL) {
 355     trace_class_resolution(k);
 356   }
 357 
 358   cls = (jclass)JNIHandles::make_local(
 359     env, k->java_mirror());
 360   return cls;
 361 JNI_END
 362 
 363 
 364 
 365 static bool first_time_FindClass = true;
 366 
 367 DT_RETURN_MARK_DECL(FindClass, jclass
 368                     , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
 369 
 370 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
 371   JNIWrapper("FindClass");
 372 
 373   HOTSPOT_JNI_FINDCLASS_ENTRY(env, (char *)name);
 374 
 375   jclass result = NULL;
 376   DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
 377 
 378   // Remember if we are the first invocation of jni_FindClass
 379   bool first_time = first_time_FindClass;
 380   first_time_FindClass = false;
 381 
 382   // Sanity check the name:  it cannot be null or larger than the maximum size
 383   // name we can fit in the constant pool.
 384   if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
 385     THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
 386   }
 387 
 388   //%note jni_3
 389   Handle loader;
 390   Handle protection_domain;
 391   // Find calling class
 392   instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
 393   if (k.not_null()) {
 394     loader = Handle(THREAD, k->class_loader());
 395     // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
 396     // in the correct class context.
 397     if (loader.is_null() &&
 398         k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
 399       JavaValue result(T_OBJECT);
 400       JavaCalls::call_static(&result, k,
 401                                       vmSymbols::getFromClass_name(),
 402                                       vmSymbols::void_class_signature(),
 403                                       thread);
 404       if (HAS_PENDING_EXCEPTION) {
 405         Handle ex(thread, thread->pending_exception());
 406         CLEAR_PENDING_EXCEPTION;
 407         THROW_HANDLE_0(ex);
 408       }
 409       oop mirror = (oop) result.get_jobject();
 410       loader = Handle(THREAD,
 411         InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
 412       protection_domain = Handle(THREAD,
 413         InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
 414     }
 415   } else {
 416     // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
 417     loader = Handle(THREAD, SystemDictionary::java_system_loader());
 418   }
 419 
 420   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
 421   result = find_class_from_class_loader(env, sym, true, loader,
 422                                         protection_domain, true, thread);
 423 
 424   if (TraceClassResolution && result != NULL) {
 425     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
 426   }
 427 
 428   // If we were the first invocation of jni_FindClass, we enable compilation again
 429   // rather than just allowing invocation counter to overflow and decay.
 430   // Controlled by flag DelayCompilationDuringStartup.
 431   if (first_time && !CompileTheWorld)
 432     CompilationPolicy::completed_vm_startup();
 433 
 434   return result;
 435 JNI_END
 436 
 437 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
 438                     , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
 439 
 440 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
 441   JNIWrapper("FromReflectedMethod");
 442 
 443   HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(env, method);
 444 
 445   jmethodID ret = NULL;
 446   DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
 447 
 448   // method is a handle to a java.lang.reflect.Method object
 449   oop reflected  = JNIHandles::resolve_non_null(method);
 450   oop mirror     = NULL;
 451   int slot       = 0;
 452 
 453   if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
 454     mirror = java_lang_reflect_Constructor::clazz(reflected);
 455     slot   = java_lang_reflect_Constructor::slot(reflected);
 456   } else {
 457     assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
 458     mirror = java_lang_reflect_Method::clazz(reflected);
 459     slot   = java_lang_reflect_Method::slot(reflected);
 460   }
 461   Klass* k     = java_lang_Class::as_Klass(mirror);
 462 
 463   KlassHandle k1(THREAD, k);
 464   // Make sure class is initialized before handing id's out to methods
 465   k1()->initialize(CHECK_NULL);
 466   Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
 467   ret = m==NULL? NULL : m->jmethod_id();  // return NULL if reflected method deleted
 468   return ret;
 469 JNI_END
 470 
 471 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
 472                     , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
 473 
 474 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
 475   JNIWrapper("FromReflectedField");
 476 
 477   HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(env, field);
 478 
 479   jfieldID ret = NULL;
 480   DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
 481 
 482   // field is a handle to a java.lang.reflect.Field object
 483   oop reflected   = JNIHandles::resolve_non_null(field);
 484   oop mirror      = java_lang_reflect_Field::clazz(reflected);
 485   Klass* k      = java_lang_Class::as_Klass(mirror);
 486   int slot        = java_lang_reflect_Field::slot(reflected);
 487   int modifiers   = java_lang_reflect_Field::modifiers(reflected);
 488 
 489   KlassHandle k1(THREAD, k);
 490   // Make sure class is initialized before handing id's out to fields
 491   k1()->initialize(CHECK_NULL);
 492 
 493   // First check if this is a static field
 494   if (modifiers & JVM_ACC_STATIC) {
 495     intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
 496     JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
 497     assert(id != NULL, "corrupt Field object");
 498     debug_only(id->set_is_static_field_id();)
 499     // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
 500     ret = jfieldIDWorkaround::to_static_jfieldID(id);
 501     return ret;
 502   }
 503 
 504   // The slot is the index of the field description in the field-array
 505   // The jfieldID is the offset of the field within the object
 506   // It may also have hash bits for k, if VerifyJNIFields is turned on.
 507   intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
 508   assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
 509   ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
 510   return ret;
 511 JNI_END
 512 
 513 
 514 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
 515                     , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
 516 
 517 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
 518   JNIWrapper("ToReflectedMethod");
 519 
 520   HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(env, cls, (uintptr_t) method_id, isStatic);
 521 
 522   jobject ret = NULL;
 523   DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
 524 
 525   methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
 526   assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
 527   oop reflection_method;
 528   if (m->is_initializer()) {
 529     reflection_method = Reflection::new_constructor(m, CHECK_NULL);
 530   } else {
 531     reflection_method = Reflection::new_method(m, false, CHECK_NULL);
 532   }
 533   ret = JNIHandles::make_local(env, reflection_method);
 534   return ret;
 535 JNI_END
 536 
 537 DT_RETURN_MARK_DECL(GetSuperclass, jclass
 538                     , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
 539 
 540 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
 541   JNIWrapper("GetSuperclass");
 542 
 543   HOTSPOT_JNI_GETSUPERCLASS_ENTRY(env, sub);
 544 
 545   jclass obj = NULL;
 546   DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
 547 
 548   oop mirror = JNIHandles::resolve_non_null(sub);
 549   // primitive classes return NULL
 550   if (java_lang_Class::is_primitive(mirror)) return NULL;
 551 
 552   // Rules of Class.getSuperClass as implemented by KLass::java_super:
 553   // arrays return Object
 554   // interfaces return NULL
 555   // proper classes return Klass::super()
 556   Klass* k = java_lang_Class::as_Klass(mirror);
 557   if (k->is_interface()) return NULL;
 558 
 559   // return mirror for superclass
 560   Klass* super = k->java_super();
 561   // super2 is the value computed by the compiler's getSuperClass intrinsic:
 562   debug_only(Klass* super2 = ( k->oop_is_array()
 563                                  ? SystemDictionary::Object_klass()
 564                                  : k->super() ) );
 565   assert(super == super2,
 566          "java_super computation depends on interface, array, other super");
 567   obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());
 568   return obj;
 569 JNI_END
 570 
 571 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
 572   JNIWrapper("IsSubclassOf");
 573 
 574   HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(env, sub, super);
 575 
 576   oop sub_mirror   = JNIHandles::resolve_non_null(sub);
 577   oop super_mirror = JNIHandles::resolve_non_null(super);
 578   if (java_lang_Class::is_primitive(sub_mirror) ||
 579       java_lang_Class::is_primitive(super_mirror)) {
 580     jboolean ret = (sub_mirror == super_mirror);
 581 
 582     HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret);
 583     return ret;
 584   }
 585   Klass* sub_klass   = java_lang_Class::as_Klass(sub_mirror);
 586   Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
 587   assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
 588   jboolean ret = sub_klass->is_subtype_of(super_klass) ?
 589                    JNI_TRUE : JNI_FALSE;
 590 
 591   HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(ret);
 592   return ret;
 593 JNI_END
 594 
 595 
 596 DT_RETURN_MARK_DECL(Throw, jint
 597                     , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
 598 
 599 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
 600   JNIWrapper("Throw");
 601 
 602   HOTSPOT_JNI_THROW_ENTRY(env, obj);
 603 
 604   jint ret = JNI_OK;
 605   DT_RETURN_MARK(Throw, jint, (const jint&)ret);
 606 
 607   THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
 608   ShouldNotReachHere();
 609   return 0;  // Mute compiler.
 610 JNI_END
 611 
 612 
 613 DT_RETURN_MARK_DECL(ThrowNew, jint
 614                     , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
 615 
 616 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
 617   JNIWrapper("ThrowNew");
 618 
 619   HOTSPOT_JNI_THROWNEW_ENTRY(env, clazz, (char *) message);
 620 
 621   jint ret = JNI_OK;
 622   DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
 623 
 624   InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
 625   Symbol*  name = k->name();
 626   Handle class_loader (THREAD,  k->class_loader());
 627   Handle protection_domain (THREAD, k->protection_domain());
 628   THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
 629   ShouldNotReachHere();
 630   return 0;  // Mute compiler.
 631 JNI_END
 632 
 633 
 634 // JNI functions only transform a pending async exception to a synchronous
 635 // exception in ExceptionOccurred and ExceptionCheck calls, since
 636 // delivering an async exception in other places won't change the native
 637 // code's control flow and would be harmful when native code further calls
 638 // JNI functions with a pending exception. Async exception is also checked
 639 // during the call, so ExceptionOccurred/ExceptionCheck won't return
 640 // false but deliver the async exception at the very end during
 641 // state transition.
 642 
 643 static void jni_check_async_exceptions(JavaThread *thread) {
 644   assert(thread == Thread::current(), "must be itself");
 645   thread->check_and_handle_async_exceptions();
 646 }
 647 
 648 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
 649   JNIWrapper("ExceptionOccurred");
 650 
 651   HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(env);
 652 
 653   jni_check_async_exceptions(thread);
 654   oop exception = thread->pending_exception();
 655   jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
 656 
 657   HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(ret);
 658   return ret;
 659 JNI_END
 660 
 661 
 662 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
 663   JNIWrapper("ExceptionDescribe");
 664 
 665   HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(env);
 666 
 667   if (thread->has_pending_exception()) {
 668     Handle ex(thread, thread->pending_exception());
 669     thread->clear_pending_exception();
 670     if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
 671       // Don't print anything if we are being killed.
 672     } else {
 673       jio_fprintf(defaultStream::error_stream(), "Exception ");
 674       if (thread != NULL && thread->threadObj() != NULL) {
 675         ResourceMark rm(THREAD);
 676         jio_fprintf(defaultStream::error_stream(),
 677         "in thread \"%s\" ", thread->get_thread_name());
 678       }
 679       if (ex->is_a(SystemDictionary::Throwable_klass())) {
 680         JavaValue result(T_VOID);
 681         JavaCalls::call_virtual(&result,
 682                                 ex,
 683                                 KlassHandle(THREAD,
 684                                   SystemDictionary::Throwable_klass()),
 685                                 vmSymbols::printStackTrace_name(),
 686                                 vmSymbols::void_method_signature(),
 687                                 THREAD);
 688         // If an exception is thrown in the call it gets thrown away. Not much
 689         // we can do with it. The native code that calls this, does not check
 690         // for the exception - hence, it might still be in the thread when DestroyVM gets
 691         // called, potentially causing a few asserts to trigger - since no pending exception
 692         // is expected.
 693         CLEAR_PENDING_EXCEPTION;
 694       } else {
 695         ResourceMark rm(THREAD);
 696         jio_fprintf(defaultStream::error_stream(),
 697         ". Uncaught exception of type %s.",
 698         ex->klass()->external_name());
 699       }
 700     }
 701   }
 702 
 703   HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN();
 704 JNI_END
 705 
 706 
 707 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
 708   JNIWrapper("ExceptionClear");
 709 
 710   HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(env);
 711 
 712   // The jni code might be using this API to clear java thrown exception.
 713   // So just mark jvmti thread exception state as exception caught.
 714   JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
 715   if (state != NULL && state->is_exception_detected()) {
 716     state->set_exception_caught();
 717   }
 718   thread->clear_pending_exception();
 719 
 720   HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN();
 721 JNI_END
 722 
 723 
 724 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
 725   JNIWrapper("FatalError");
 726 
 727   HOTSPOT_JNI_FATALERROR_ENTRY(env, (char *) msg);
 728 
 729   tty->print_cr("FATAL ERROR in native method: %s", msg);
 730   thread->print_stack();
 731   os::abort(); // Dump core and abort
 732 JNI_END
 733 
 734 
 735 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
 736   JNIWrapper("PushLocalFrame");
 737 
 738   HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(env, capacity);
 739 
 740   //%note jni_11
 741   if (capacity < 0 ||
 742       ((MaxJNILocalCapacity > 0) && (capacity > MaxJNILocalCapacity))) {
 743     HOTSPOT_JNI_PUSHLOCALFRAME_RETURN((uint32_t)JNI_ERR);
 744     return JNI_ERR;
 745   }
 746   JNIHandleBlock* old_handles = thread->active_handles();
 747   JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
 748   assert(new_handles != NULL, "should not be NULL");
 749   new_handles->set_pop_frame_link(old_handles);
 750   thread->set_active_handles(new_handles);
 751   jint ret = JNI_OK;
 752   HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(ret);
 753   return ret;
 754 JNI_END
 755 
 756 
 757 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
 758   JNIWrapper("PopLocalFrame");
 759 
 760   HOTSPOT_JNI_POPLOCALFRAME_ENTRY(env, result);
 761 
 762   //%note jni_11
 763   Handle result_handle(thread, JNIHandles::resolve(result));
 764   JNIHandleBlock* old_handles = thread->active_handles();
 765   JNIHandleBlock* new_handles = old_handles->pop_frame_link();
 766   if (new_handles != NULL) {
 767     // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
 768     // This way code will still work if PopLocalFrame is called without a corresponding
 769     // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
 770     // the release_block call will release the blocks.
 771     thread->set_active_handles(new_handles);
 772     old_handles->set_pop_frame_link(NULL);              // clear link we won't release new_handles below
 773     JNIHandleBlock::release_block(old_handles, thread); // may block
 774     result = JNIHandles::make_local(thread, result_handle());
 775   }
 776   HOTSPOT_JNI_POPLOCALFRAME_RETURN(result);
 777   return result;
 778 JNI_END
 779 
 780 
 781 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
 782   JNIWrapper("NewGlobalRef");
 783 
 784   HOTSPOT_JNI_NEWGLOBALREF_ENTRY(env, ref);
 785 
 786   Handle ref_handle(thread, JNIHandles::resolve(ref));
 787   jobject ret = JNIHandles::make_global(ref_handle);
 788 
 789   HOTSPOT_JNI_NEWGLOBALREF_RETURN(ret);
 790   return ret;
 791 JNI_END
 792 
 793 // Must be JNI_ENTRY (with HandleMark)
 794 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
 795   JNIWrapper("DeleteGlobalRef");
 796 
 797   HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(env, ref);
 798 
 799   JNIHandles::destroy_global(ref);
 800 
 801   HOTSPOT_JNI_DELETEGLOBALREF_RETURN();
 802 JNI_END
 803 
 804 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
 805   JNIWrapper("DeleteLocalRef");
 806 
 807   HOTSPOT_JNI_DELETELOCALREF_ENTRY(env, obj);
 808 
 809   JNIHandles::destroy_local(obj);
 810 
 811   HOTSPOT_JNI_DELETELOCALREF_RETURN();
 812 JNI_END
 813 
 814 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
 815   JNIWrapper("IsSameObject");
 816 
 817   HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(env, r1, r2);
 818 
 819   oop a = JNIHandles::resolve(r1);
 820   oop b = JNIHandles::resolve(r2);
 821   jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
 822 
 823   HOTSPOT_JNI_ISSAMEOBJECT_RETURN(ret);
 824   return ret;
 825 JNI_END
 826 
 827 
 828 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
 829   JNIWrapper("NewLocalRef");
 830 
 831   HOTSPOT_JNI_NEWLOCALREF_ENTRY(env, ref);
 832 
 833   jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
 834 
 835   HOTSPOT_JNI_NEWLOCALREF_RETURN(ret);
 836   return ret;
 837 JNI_END
 838 
 839 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
 840   JNIWrapper("EnsureLocalCapacity");
 841 
 842   HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(env, capacity);
 843 
 844   jint ret;
 845   if (capacity >= 0 &&
 846       ((MaxJNILocalCapacity <= 0) || (capacity <= MaxJNILocalCapacity))) {
 847     ret = JNI_OK;
 848   } else {
 849     ret = JNI_ERR;
 850   }
 851 
 852   HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(ret);
 853   return ret;
 854 JNI_END
 855 
 856 // Return the Handle Type
 857 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
 858   JNIWrapper("GetObjectRefType");
 859 
 860   HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(env, obj);
 861 
 862   jobjectRefType ret;
 863   if (JNIHandles::is_local_handle(thread, obj) ||
 864       JNIHandles::is_frame_handle(thread, obj))
 865     ret = JNILocalRefType;
 866   else if (JNIHandles::is_global_handle(obj))
 867     ret = JNIGlobalRefType;
 868   else if (JNIHandles::is_weak_global_handle(obj))
 869     ret = JNIWeakGlobalRefType;
 870   else
 871     ret = JNIInvalidRefType;
 872 
 873   HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN((void *) ret);
 874   return ret;
 875 JNI_END
 876 
 877 
 878 class JNI_ArgumentPusher : public SignatureIterator {
 879  protected:
 880   JavaCallArguments*  _arguments;
 881 
 882   virtual void get_bool   () = 0;
 883   virtual void get_char   () = 0;
 884   virtual void get_short  () = 0;
 885   virtual void get_byte   () = 0;
 886   virtual void get_int    () = 0;
 887   virtual void get_long   () = 0;
 888   virtual void get_float  () = 0;
 889   virtual void get_double () = 0;
 890   virtual void get_object () = 0;
 891 
 892   JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
 893     this->_return_type = T_ILLEGAL;
 894     _arguments = NULL;
 895   }
 896 
 897  public:
 898   virtual void iterate( uint64_t fingerprint ) = 0;
 899 
 900   void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
 901 
 902   inline void do_bool()                     { if (!is_return_type()) get_bool();   }
 903   inline void do_char()                     { if (!is_return_type()) get_char();   }
 904   inline void do_short()                    { if (!is_return_type()) get_short();  }
 905   inline void do_byte()                     { if (!is_return_type()) get_byte();   }
 906   inline void do_int()                      { if (!is_return_type()) get_int();    }
 907   inline void do_long()                     { if (!is_return_type()) get_long();   }
 908   inline void do_float()                    { if (!is_return_type()) get_float();  }
 909   inline void do_double()                   { if (!is_return_type()) get_double(); }
 910   inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
 911   inline void do_array(int begin, int end)  { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
 912   inline void do_void()                     { }
 913 
 914   JavaCallArguments* arguments()     { return _arguments; }
 915   void push_receiver(Handle h)       { _arguments->push_oop(h); }
 916 };
 917 
 918 
 919 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
 920  protected:
 921   va_list _ap;
 922 
 923   inline void get_bool()   { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
 924   inline void get_char()   { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
 925   inline void get_short()  { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
 926   inline void get_byte()   { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
 927   inline void get_int()    { _arguments->push_int(va_arg(_ap, jint)); }
 928 
 929   // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
 930 
 931   inline void get_long()   { _arguments->push_long(va_arg(_ap, jlong)); }
 932   inline void get_float()  { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
 933   inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
 934   inline void get_object() { jobject l = va_arg(_ap, jobject);
 935                              _arguments->push_oop(Handle((oop *)l, false)); }
 936 
 937   inline void set_ap(va_list rap) {
 938 #ifdef va_copy
 939     va_copy(_ap, rap);
 940 #elif defined (__va_copy)
 941     __va_copy(_ap, rap);
 942 #else
 943     _ap = rap;
 944 #endif
 945   }
 946 
 947  public:
 948   JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
 949        : JNI_ArgumentPusher(signature) {
 950     set_ap(rap);
 951   }
 952   JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
 953       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
 954     set_ap(rap);
 955   }
 956 
 957   // Optimized path if we have the bitvector form of signature
 958   void iterate( uint64_t fingerprint ) {
 959     if (fingerprint == (uint64_t)CONST64(-1)) {
 960       SignatureIterator::iterate(); // Must be too many arguments
 961     } else {
 962       _return_type = (BasicType)((fingerprint >> static_feature_size) &
 963                                   result_feature_mask);
 964 
 965       assert(fingerprint, "Fingerprint should not be 0");
 966       fingerprint = fingerprint >> (static_feature_size + result_feature_size);
 967       while ( 1 ) {
 968         switch ( fingerprint & parameter_feature_mask ) {
 969           case bool_parm:
 970           case char_parm:
 971           case short_parm:
 972           case byte_parm:
 973           case int_parm:
 974             get_int();
 975             break;
 976           case obj_parm:
 977             get_object();
 978             break;
 979           case long_parm:
 980             get_long();
 981             break;
 982           case float_parm:
 983             get_float();
 984             break;
 985           case double_parm:
 986             get_double();
 987             break;
 988           case done_parm:
 989             return;
 990             break;
 991           default:
 992             ShouldNotReachHere();
 993             break;
 994         }
 995         fingerprint >>= parameter_feature_size;
 996       }
 997     }
 998   }
 999 };
1000 
1001 
1002 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1003  protected:
1004   const jvalue *_ap;
1005 
1006   inline void get_bool()   { _arguments->push_int((jint)(_ap++)->z); }
1007   inline void get_char()   { _arguments->push_int((jint)(_ap++)->c); }
1008   inline void get_short()  { _arguments->push_int((jint)(_ap++)->s); }
1009   inline void get_byte()   { _arguments->push_int((jint)(_ap++)->b); }
1010   inline void get_int()    { _arguments->push_int((jint)(_ap++)->i); }
1011 
1012   inline void get_long()   { _arguments->push_long((_ap++)->j);  }
1013   inline void get_float()  { _arguments->push_float((_ap++)->f); }
1014   inline void get_double() { _arguments->push_double((_ap++)->d);}
1015   inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1016 
1017   inline void set_ap(const jvalue *rap) { _ap = rap; }
1018 
1019  public:
1020   JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1021        : JNI_ArgumentPusher(signature) {
1022     set_ap(rap);
1023   }
1024   JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1025       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1026     set_ap(rap);
1027   }
1028 
1029   // Optimized path if we have the bitvector form of signature
1030   void iterate( uint64_t fingerprint ) {
1031     if (fingerprint == (uint64_t)CONST64(-1)) {
1032       SignatureIterator::iterate(); // Must be too many arguments
1033     } else {
1034       _return_type = (BasicType)((fingerprint >> static_feature_size) &
1035                                   result_feature_mask);
1036       assert(fingerprint, "Fingerprint should not be 0");
1037       fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1038       while ( 1 ) {
1039         switch ( fingerprint & parameter_feature_mask ) {
1040           case bool_parm:
1041             get_bool();
1042             break;
1043           case char_parm:
1044             get_char();
1045             break;
1046           case short_parm:
1047             get_short();
1048             break;
1049           case byte_parm:
1050             get_byte();
1051             break;
1052           case int_parm:
1053             get_int();
1054             break;
1055           case obj_parm:
1056             get_object();
1057             break;
1058           case long_parm:
1059             get_long();
1060             break;
1061           case float_parm:
1062             get_float();
1063             break;
1064           case double_parm:
1065             get_double();
1066             break;
1067           case done_parm:
1068             return;
1069             break;
1070           default:
1071             ShouldNotReachHere();
1072             break;
1073         }
1074         fingerprint >>= parameter_feature_size;
1075       }
1076     }
1077   }
1078 };
1079 
1080 
1081 enum JNICallType {
1082   JNI_STATIC,
1083   JNI_VIRTUAL,
1084   JNI_NONVIRTUAL
1085 };
1086 
1087 
1088 
1089 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1090   methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1091 
1092   // Create object to hold arguments for the JavaCall, and associate it with
1093   // the jni parser
1094   ResourceMark rm(THREAD);
1095   int number_of_parameters = method->size_of_parameters();
1096   JavaCallArguments java_args(number_of_parameters);
1097   args->set_java_argument_object(&java_args);
1098 
1099   assert(method->is_static(), "method should be static");
1100 
1101   // Fill out JavaCallArguments object
1102   args->iterate( Fingerprinter(method).fingerprint() );
1103   // Initialize result type
1104   result->set_type(args->get_ret_type());
1105 
1106   // Invoke the method. Result is returned as oop.
1107   JavaCalls::call(result, method, &java_args, CHECK);
1108 
1109   // Convert result
1110   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1111     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1112   }
1113 }
1114 
1115 
1116 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1117   oop recv = JNIHandles::resolve(receiver);
1118   if (recv == NULL) {
1119     THROW(vmSymbols::java_lang_NullPointerException());
1120   }
1121   Handle h_recv(THREAD, recv);
1122 
1123   int number_of_parameters;
1124   Method* selected_method;
1125   {
1126     Method* m = Method::resolve_jmethod_id(method_id);
1127     number_of_parameters = m->size_of_parameters();
1128     Klass* holder = m->method_holder();
1129     if (call_type != JNI_VIRTUAL) {
1130         selected_method = m;
1131     } else if (!m->has_itable_index()) {
1132       // non-interface call -- for that little speed boost, don't handlize
1133       debug_only(No_Safepoint_Verifier nosafepoint;)
1134       // jni_GetMethodID makes sure class is linked and initialized
1135       // so m should have a valid vtable index.
1136       assert(m->valid_vtable_index(), "no valid vtable index");
1137       int vtbl_index = m->vtable_index();
1138       if (vtbl_index != Method::nonvirtual_vtable_index) {
1139         Klass* k = h_recv->klass();
1140         // k might be an arrayKlassOop but all vtables start at
1141         // the same place. The cast is to avoid virtual call and assertion.
1142         InstanceKlass *ik = (InstanceKlass*)k;
1143         selected_method = ik->method_at_vtable(vtbl_index);
1144       } else {
1145         // final method
1146         selected_method = m;
1147       }
1148     } else {
1149       // interface call
1150       KlassHandle h_holder(THREAD, holder);
1151 
1152       int itbl_index = m->itable_index();
1153       Klass* k = h_recv->klass();
1154       selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1155     }
1156   }
1157 
1158   methodHandle method(THREAD, selected_method);
1159 
1160   // Create object to hold arguments for the JavaCall, and associate it with
1161   // the jni parser
1162   ResourceMark rm(THREAD);
1163   JavaCallArguments java_args(number_of_parameters);
1164   args->set_java_argument_object(&java_args);
1165 
1166   // handle arguments
1167   assert(!method->is_static(), "method should not be static");
1168   args->push_receiver(h_recv); // Push jobject handle
1169 
1170   // Fill out JavaCallArguments object
1171   args->iterate( Fingerprinter(method).fingerprint() );
1172   // Initialize result type
1173   result->set_type(args->get_ret_type());
1174 
1175   // Invoke the method. Result is returned as oop.
1176   JavaCalls::call(result, method, &java_args, CHECK);
1177 
1178   // Convert result
1179   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1180     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1181   }
1182 }
1183 
1184 
1185 static instanceOop alloc_object(jclass clazz, TRAPS) {
1186   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1187   if (k == NULL) {
1188     ResourceMark rm(THREAD);
1189     THROW_(vmSymbols::java_lang_InstantiationException(), NULL);
1190   }
1191   k()->check_valid_for_instantiation(false, CHECK_NULL);
1192   InstanceKlass::cast(k())->initialize(CHECK_NULL);
1193   instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1194   return ih;
1195 }
1196 
1197 DT_RETURN_MARK_DECL(AllocObject, jobject
1198                     , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1199 
1200 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1201   JNIWrapper("AllocObject");
1202 
1203   HOTSPOT_JNI_ALLOCOBJECT_ENTRY(env, clazz);
1204 
1205   jobject ret = NULL;
1206   DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1207 
1208   instanceOop i = alloc_object(clazz, CHECK_NULL);
1209   ret = JNIHandles::make_local(env, i);
1210   return ret;
1211 JNI_END
1212 
1213 DT_RETURN_MARK_DECL(NewObjectA, jobject
1214                     , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1215 
1216 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1217   JNIWrapper("NewObjectA");
1218 
1219   HOTSPOT_JNI_NEWOBJECTA_ENTRY(env, clazz, (uintptr_t) methodID);
1220 
1221   jobject obj = NULL;
1222   DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1223 
1224   instanceOop i = alloc_object(clazz, CHECK_NULL);
1225   obj = JNIHandles::make_local(env, i);
1226   JavaValue jvalue(T_VOID);
1227   JNI_ArgumentPusherArray ap(methodID, args);
1228   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1229   return obj;
1230 JNI_END
1231 
1232 
1233 DT_RETURN_MARK_DECL(NewObjectV, jobject
1234                     , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1235 
1236 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1237   JNIWrapper("NewObjectV");
1238 
1239   HOTSPOT_JNI_NEWOBJECTV_ENTRY(env, clazz, (uintptr_t) methodID);
1240 
1241   jobject obj = NULL;
1242   DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1243 
1244   instanceOop i = alloc_object(clazz, CHECK_NULL);
1245   obj = JNIHandles::make_local(env, i);
1246   JavaValue jvalue(T_VOID);
1247   JNI_ArgumentPusherVaArg ap(methodID, args);
1248   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1249   return obj;
1250 JNI_END
1251 
1252 
1253 DT_RETURN_MARK_DECL(NewObject, jobject
1254                     , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1255 
1256 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1257   JNIWrapper("NewObject");
1258 
1259   HOTSPOT_JNI_NEWOBJECT_ENTRY(env, clazz, (uintptr_t) methodID);
1260 
1261   jobject obj = NULL;
1262   DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1263 
1264   instanceOop i = alloc_object(clazz, CHECK_NULL);
1265   obj = JNIHandles::make_local(env, i);
1266   va_list args;
1267   va_start(args, methodID);
1268   JavaValue jvalue(T_VOID);
1269   JNI_ArgumentPusherVaArg ap(methodID, args);
1270   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1271   va_end(args);
1272   return obj;
1273 JNI_END
1274 
1275 
1276 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1277   JNIWrapper("GetObjectClass");
1278 
1279   HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(env, obj);
1280 
1281   Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1282   jclass ret =
1283     (jclass) JNIHandles::make_local(env, k->java_mirror());
1284 
1285   HOTSPOT_JNI_GETOBJECTCLASS_RETURN(ret);
1286   return ret;
1287 JNI_END
1288 
1289 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1290   JNIWrapper("IsInstanceOf");
1291 
1292   HOTSPOT_JNI_ISINSTANCEOF_ENTRY(env, obj, clazz);
1293 
1294   jboolean ret = JNI_TRUE;
1295   if (obj != NULL) {
1296     ret = JNI_FALSE;
1297     Klass* k = java_lang_Class::as_Klass(
1298       JNIHandles::resolve_non_null(clazz));
1299     if (k != NULL) {
1300       ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1301     }
1302   }
1303 
1304   HOTSPOT_JNI_ISINSTANCEOF_RETURN(ret);
1305   return ret;
1306 JNI_END
1307 
1308 
1309 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1310                                const char *sig, bool is_static, TRAPS) {
1311   // %%%% This code should probably just call into a method in the LinkResolver
1312   //
1313   // The class should have been loaded (we have an instance of the class
1314   // passed in) so the method and signature should already be in the symbol
1315   // table.  If they're not there, the method doesn't exist.
1316   const char *name_to_probe = (name_str == NULL)
1317                         ? vmSymbols::object_initializer_name()->as_C_string()
1318                         : name_str;
1319   TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1320   TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1321 
1322   if (name == NULL || signature == NULL) {
1323     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1324   }
1325 
1326   // Throw a NoSuchMethodError exception if we have an instance of a
1327   // primitive java.lang.Class
1328   if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1329     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1330   }
1331 
1332   KlassHandle klass(THREAD,
1333                java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1334 
1335   // Make sure class is linked and initialized before handing id's out to
1336   // Method*s.
1337   klass()->initialize(CHECK_NULL);
1338 
1339   Method* m;
1340   if (name == vmSymbols::object_initializer_name() ||
1341       name == vmSymbols::class_initializer_name()) {
1342     // Never search superclasses for constructors
1343     if (klass->oop_is_instance()) {
1344       m = InstanceKlass::cast(klass())->find_method(name, signature);
1345     } else {
1346       m = NULL;
1347     }
1348   } else {
1349     m = klass->lookup_method(name, signature);
1350     if (m == NULL &&  klass->oop_is_instance()) {
1351       m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);
1352     }
1353   }
1354   if (m == NULL || (m->is_static() != is_static)) {
1355     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1356   }
1357   return m->jmethod_id();
1358 }
1359 
1360 
1361 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1362           const char *name, const char *sig))
1363   JNIWrapper("GetMethodID");
1364   HOTSPOT_JNI_GETMETHODID_ENTRY(env, clazz, (char *) name, (char *) sig);
1365   jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1366   HOTSPOT_JNI_GETMETHODID_RETURN((uintptr_t) ret);
1367   return ret;
1368 JNI_END
1369 
1370 
1371 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1372           const char *name, const char *sig))
1373   JNIWrapper("GetStaticMethodID");
1374   HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(env, (char *) clazz, (char *) name, (char *)sig);
1375   jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1376   HOTSPOT_JNI_GETSTATICMETHODID_RETURN((uintptr_t) ret);
1377   return ret;
1378 JNI_END
1379 
1380 
1381 
1382 //
1383 // Calling Methods
1384 //
1385 
1386 
1387 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1388                           , EntryProbe, ReturnProbe)    \
1389 \
1390   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1391                           , ReturnProbe);                          \
1392 \
1393 JNI_ENTRY(ResultType, \
1394           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1395   JNIWrapper("Call" XSTR(Result) "Method"); \
1396 \
1397   EntryProbe; \
1398   ResultType ret = 0;\
1399   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1400                      (const ResultType&)ret);\
1401 \
1402   va_list args; \
1403   va_start(args, methodID); \
1404   JavaValue jvalue(Tag); \
1405   JNI_ArgumentPusherVaArg ap(methodID, args); \
1406   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1407   va_end(args); \
1408   ret = jvalue.get_##ResultType(); \
1409   return ret;\
1410 JNI_END
1411 
1412 // the runtime type of subword integral basic types is integer
1413 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1414                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1415                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1416 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE
1417                   , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1418                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1419 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR
1420                   , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1421                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1422 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT
1423                   , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1424                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1425 
1426 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT
1427                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1428                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1429 DEFINE_CALLMETHOD(jint,     Int,     T_INT,
1430                   HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1431                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1432 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG
1433                   , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1434                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1435 // Float and double probes don't return value because dtrace doesn't currently support it
1436 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT
1437                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1438                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1439 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE
1440                   , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1441                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1442 
1443 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1444                           , EntryProbe, ReturnProbe)    \
1445 \
1446   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1447                           , ReturnProbe);                          \
1448 \
1449 JNI_ENTRY(ResultType, \
1450           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1451   JNIWrapper("Call" XSTR(Result) "MethodV"); \
1452 \
1453   EntryProbe;\
1454   ResultType ret = 0;\
1455   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1456                      (const ResultType&)ret);\
1457 \
1458   JavaValue jvalue(Tag); \
1459   JNI_ArgumentPusherVaArg ap(methodID, args); \
1460   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1461   ret = jvalue.get_##ResultType(); \
1462   return ret;\
1463 JNI_END
1464 
1465 // the runtime type of subword integral basic types is integer
1466 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1467                   , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1468                   HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref))
1469 DEFINE_CALLMETHODV(jbyte,    Byte,    T_BYTE
1470                   , HOTSPOT_JNI_CALLBYTEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1471                   HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref))
1472 DEFINE_CALLMETHODV(jchar,    Char,    T_CHAR
1473                   , HOTSPOT_JNI_CALLCHARMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1474                   HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref))
1475 DEFINE_CALLMETHODV(jshort,   Short,   T_SHORT
1476                   , HOTSPOT_JNI_CALLSHORTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1477                   HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref))
1478 
1479 DEFINE_CALLMETHODV(jobject,  Object,  T_OBJECT
1480                   , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1481                   HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref))
1482 DEFINE_CALLMETHODV(jint,     Int,     T_INT,
1483                   HOTSPOT_JNI_CALLINTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1484                   HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref))
1485 DEFINE_CALLMETHODV(jlong,    Long,    T_LONG
1486                   , HOTSPOT_JNI_CALLLONGMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1487                   HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref))
1488 // Float and double probes don't return value because dtrace doesn't currently support it
1489 DEFINE_CALLMETHODV(jfloat,   Float,   T_FLOAT
1490                   , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1491                   HOTSPOT_JNI_CALLFLOATMETHODV_RETURN())
1492 DEFINE_CALLMETHODV(jdouble,  Double,  T_DOUBLE
1493                   , HOTSPOT_JNI_CALLDOUBLEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),
1494                   HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN())
1495 
1496 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1497                           , EntryProbe, ReturnProbe)    \
1498 \
1499   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1500                           , ReturnProbe);                          \
1501 \
1502 JNI_ENTRY(ResultType, \
1503           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1504   JNIWrapper("Call" XSTR(Result) "MethodA"); \
1505   EntryProbe; \
1506   ResultType ret = 0;\
1507   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1508                      (const ResultType&)ret);\
1509 \
1510   JavaValue jvalue(Tag); \
1511   JNI_ArgumentPusherArray ap(methodID, args); \
1512   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1513   ret = jvalue.get_##ResultType(); \
1514   return ret;\
1515 JNI_END
1516 
1517 // the runtime type of subword integral basic types is integer
1518 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1519                   , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1520                   HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref))
1521 DEFINE_CALLMETHODA(jbyte,    Byte,    T_BYTE
1522                   , HOTSPOT_JNI_CALLBYTEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1523                   HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref))
1524 DEFINE_CALLMETHODA(jchar,    Char,    T_CHAR
1525                   , HOTSPOT_JNI_CALLCHARMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1526                   HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref))
1527 DEFINE_CALLMETHODA(jshort,   Short,   T_SHORT
1528                   , HOTSPOT_JNI_CALLSHORTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1529                   HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref))
1530 
1531 DEFINE_CALLMETHODA(jobject,  Object,  T_OBJECT
1532                   , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1533                   HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref))
1534 DEFINE_CALLMETHODA(jint,     Int,     T_INT,
1535                   HOTSPOT_JNI_CALLINTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1536                   HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref))
1537 DEFINE_CALLMETHODA(jlong,    Long,    T_LONG
1538                   , HOTSPOT_JNI_CALLLONGMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1539                   HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref))
1540 // Float and double probes don't return value because dtrace doesn't currently support it
1541 DEFINE_CALLMETHODA(jfloat,   Float,   T_FLOAT
1542                   , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1543                   HOTSPOT_JNI_CALLFLOATMETHODA_RETURN())
1544 DEFINE_CALLMETHODA(jdouble,  Double,  T_DOUBLE
1545                   , HOTSPOT_JNI_CALLDOUBLEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),
1546                   HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN())
1547 
1548 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1549 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1550 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1551 
1552 
1553 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1554   JNIWrapper("CallVoidMethod");
1555   HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(env, obj, (uintptr_t) methodID);
1556   DT_VOID_RETURN_MARK(CallVoidMethod);
1557 
1558   va_list args;
1559   va_start(args, methodID);
1560   JavaValue jvalue(T_VOID);
1561   JNI_ArgumentPusherVaArg ap(methodID, args);
1562   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1563   va_end(args);
1564 JNI_END
1565 
1566 
1567 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1568   JNIWrapper("CallVoidMethodV");
1569   HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(env, obj, (uintptr_t) methodID);
1570   DT_VOID_RETURN_MARK(CallVoidMethodV);
1571 
1572   JavaValue jvalue(T_VOID);
1573   JNI_ArgumentPusherVaArg ap(methodID, args);
1574   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1575 JNI_END
1576 
1577 
1578 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1579   JNIWrapper("CallVoidMethodA");
1580   HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(env, obj, (uintptr_t) methodID);
1581   DT_VOID_RETURN_MARK(CallVoidMethodA);
1582 
1583   JavaValue jvalue(T_VOID);
1584   JNI_ArgumentPusherArray ap(methodID, args);
1585   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1586 JNI_END
1587 
1588 
1589 
1590 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
1591                                     , EntryProbe, ReturnProbe)      \
1592 \
1593   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
1594                           , ReturnProbe);\
1595 \
1596 JNI_ENTRY(ResultType, \
1597           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1598   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1599 \
1600   EntryProbe;\
1601   ResultType ret;\
1602   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1603                      (const ResultType&)ret);\
1604 \
1605   va_list args; \
1606   va_start(args, methodID); \
1607   JavaValue jvalue(Tag); \
1608   JNI_ArgumentPusherVaArg ap(methodID, args); \
1609   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, 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_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
1617                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1618                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
1619 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE
1620                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1621                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
1622 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR
1623                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1624                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
1625 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT
1626                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1627                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
1628 
1629 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT
1630                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1631                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
1632 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT
1633                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1634                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
1635 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG
1636                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1637 // Float and double probes don't return value because dtrace doesn't currently support it
1638                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
1639 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT
1640                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1641                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
1642 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE
1643                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
1644                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
1645 
1646 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
1647                                     , EntryProbe, ReturnProbe)      \
1648 \
1649   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
1650                           , ReturnProbe);\
1651 \
1652 JNI_ENTRY(ResultType, \
1653           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1654   JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
1655 \
1656   EntryProbe;\
1657   ResultType ret;\
1658   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1659                      (const ResultType&)ret);\
1660 \
1661   JavaValue jvalue(Tag); \
1662   JNI_ArgumentPusherVaArg ap(methodID, args); \
1663   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1664   ret = jvalue.get_##ResultType(); \
1665   return ret;\
1666 JNI_END
1667 
1668 // the runtime type of subword integral basic types is integer
1669 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
1670                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1671                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
1672 DEFINE_CALLNONVIRTUALMETHODV(jbyte,    Byte,    T_BYTE
1673                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1674                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
1675 DEFINE_CALLNONVIRTUALMETHODV(jchar,    Char,    T_CHAR
1676                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1677                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
1678 DEFINE_CALLNONVIRTUALMETHODV(jshort,   Short,   T_SHORT
1679                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1680                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
1681 
1682 DEFINE_CALLNONVIRTUALMETHODV(jobject,  Object,  T_OBJECT
1683                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1684                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
1685 DEFINE_CALLNONVIRTUALMETHODV(jint,     Int,     T_INT
1686                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1687                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
1688 DEFINE_CALLNONVIRTUALMETHODV(jlong,    Long,    T_LONG
1689                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1690 // Float and double probes don't return value because dtrace doesn't currently support it
1691                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
1692 DEFINE_CALLNONVIRTUALMETHODV(jfloat,   Float,   T_FLOAT
1693                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1694                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
1695 DEFINE_CALLNONVIRTUALMETHODV(jdouble,  Double,  T_DOUBLE
1696                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
1697                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
1698 
1699 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
1700                                     , EntryProbe, ReturnProbe)      \
1701 \
1702   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
1703                           , ReturnProbe);\
1704 \
1705 JNI_ENTRY(ResultType, \
1706           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1707   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1708 \
1709   EntryProbe;\
1710   ResultType ret;\
1711   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1712                      (const ResultType&)ret);\
1713 \
1714   JavaValue jvalue(Tag); \
1715   JNI_ArgumentPusherArray ap(methodID, args); \
1716   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1717   ret = jvalue.get_##ResultType(); \
1718   return ret;\
1719 JNI_END
1720 
1721 // the runtime type of subword integral basic types is integer
1722 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
1723                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1724                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
1725 DEFINE_CALLNONVIRTUALMETHODA(jbyte,    Byte,    T_BYTE
1726                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1727                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
1728 DEFINE_CALLNONVIRTUALMETHODA(jchar,    Char,    T_CHAR
1729                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1730                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
1731 DEFINE_CALLNONVIRTUALMETHODA(jshort,   Short,   T_SHORT
1732                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1733                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
1734 
1735 DEFINE_CALLNONVIRTUALMETHODA(jobject,  Object,  T_OBJECT
1736                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1737                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
1738 DEFINE_CALLNONVIRTUALMETHODA(jint,     Int,     T_INT
1739                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1740                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
1741 DEFINE_CALLNONVIRTUALMETHODA(jlong,    Long,    T_LONG
1742                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1743 // Float and double probes don't return value because dtrace doesn't currently support it
1744                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
1745 DEFINE_CALLNONVIRTUALMETHODA(jfloat,   Float,   T_FLOAT
1746                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1747                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
1748 DEFINE_CALLNONVIRTUALMETHODA(jdouble,  Double,  T_DOUBLE
1749                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
1750                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
1751 
1752 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
1753                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
1754 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
1755                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
1756 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
1757                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
1758 
1759 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
1760   JNIWrapper("CallNonvirtualVoidMethod");
1761 
1762   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(env, obj, cls, (uintptr_t) methodID);
1763   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
1764 
1765   va_list args;
1766   va_start(args, methodID);
1767   JavaValue jvalue(T_VOID);
1768   JNI_ArgumentPusherVaArg ap(methodID, args);
1769   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1770   va_end(args);
1771 JNI_END
1772 
1773 
1774 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
1775   JNIWrapper("CallNonvirtualVoidMethodV");
1776 
1777   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
1778                env, obj, cls, (uintptr_t) methodID);
1779   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
1780 
1781   JavaValue jvalue(T_VOID);
1782   JNI_ArgumentPusherVaArg ap(methodID, args);
1783   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1784 JNI_END
1785 
1786 
1787 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
1788   JNIWrapper("CallNonvirtualVoidMethodA");
1789   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
1790                 env, obj, cls, (uintptr_t) methodID);
1791   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
1792   JavaValue jvalue(T_VOID);
1793   JNI_ArgumentPusherArray ap(methodID, args);
1794   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
1795 JNI_END
1796 
1797 
1798 
1799 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
1800                                 , EntryProbe, ResultProbe) \
1801 \
1802   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
1803                           , ResultProbe);                               \
1804 \
1805 JNI_ENTRY(ResultType, \
1806           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
1807   JNIWrapper("CallStatic" XSTR(Result) "Method"); \
1808 \
1809   EntryProbe; \
1810   ResultType ret = 0;\
1811   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
1812                      (const ResultType&)ret);\
1813 \
1814   va_list args; \
1815   va_start(args, methodID); \
1816   JavaValue jvalue(Tag); \
1817   JNI_ArgumentPusherVaArg ap(methodID, args); \
1818   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1819   va_end(args); \
1820   ret = jvalue.get_##ResultType(); \
1821   return ret;\
1822 JNI_END
1823 
1824 // the runtime type of subword integral basic types is integer
1825 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
1826                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1827                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
1828 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE
1829                         , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1830                         HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
1831 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR
1832                         , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1833                         HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
1834 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT
1835                         , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1836                         HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
1837 
1838 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT
1839                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1840                         HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
1841 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT
1842                         , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1843                         HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
1844 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG
1845                         , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1846                         HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
1847 // Float and double probes don't return value because dtrace doesn't currently support it
1848 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT
1849                         , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1850                         HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
1851 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE
1852                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
1853                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
1854 
1855 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
1856                                 , EntryProbe, ResultProbe) \
1857 \
1858   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
1859                           , ResultProbe);                               \
1860 \
1861 JNI_ENTRY(ResultType, \
1862           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
1863   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
1864 \
1865   EntryProbe; \
1866   ResultType ret = 0;\
1867   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
1868                      (const ResultType&)ret);\
1869 \
1870   JavaValue jvalue(Tag); \
1871   JNI_ArgumentPusherVaArg ap(methodID, args); \
1872   /* Make sure class is initialized before trying to invoke its method */ \
1873   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
1874   k()->initialize(CHECK_0); \
1875   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1876   va_end(args); \
1877   ret = jvalue.get_##ResultType(); \
1878   return ret;\
1879 JNI_END
1880 
1881 // the runtime type of subword integral basic types is integer
1882 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
1883                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1884                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
1885 DEFINE_CALLSTATICMETHODV(jbyte,    Byte,    T_BYTE
1886                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1887                         HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
1888 DEFINE_CALLSTATICMETHODV(jchar,    Char,    T_CHAR
1889                         , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1890                         HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
1891 DEFINE_CALLSTATICMETHODV(jshort,   Short,   T_SHORT
1892                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1893                         HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
1894 
1895 DEFINE_CALLSTATICMETHODV(jobject,  Object,  T_OBJECT
1896                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1897                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
1898 DEFINE_CALLSTATICMETHODV(jint,     Int,     T_INT
1899                         , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1900                         HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
1901 DEFINE_CALLSTATICMETHODV(jlong,    Long,    T_LONG
1902                         , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1903                         HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
1904 // Float and double probes don't return value because dtrace doesn't currently support it
1905 DEFINE_CALLSTATICMETHODV(jfloat,   Float,   T_FLOAT
1906                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1907                         HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
1908 DEFINE_CALLSTATICMETHODV(jdouble,  Double,  T_DOUBLE
1909                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
1910                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
1911 
1912 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
1913                                 , EntryProbe, ResultProbe) \
1914 \
1915   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
1916                           , ResultProbe);                               \
1917 \
1918 JNI_ENTRY(ResultType, \
1919           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
1920   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
1921 \
1922   EntryProbe; \
1923   ResultType ret = 0;\
1924   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
1925                      (const ResultType&)ret);\
1926 \
1927   JavaValue jvalue(Tag); \
1928   JNI_ArgumentPusherArray ap(methodID, args); \
1929   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
1930   ret = jvalue.get_##ResultType(); \
1931   return ret;\
1932 JNI_END
1933 
1934 // the runtime type of subword integral basic types is integer
1935 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
1936                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1937                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
1938 DEFINE_CALLSTATICMETHODA(jbyte,    Byte,    T_BYTE
1939                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1940                         HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
1941 DEFINE_CALLSTATICMETHODA(jchar,    Char,    T_CHAR
1942                         , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1943                         HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
1944 DEFINE_CALLSTATICMETHODA(jshort,   Short,   T_SHORT
1945                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1946                         HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
1947 
1948 DEFINE_CALLSTATICMETHODA(jobject,  Object,  T_OBJECT
1949                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1950                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
1951 DEFINE_CALLSTATICMETHODA(jint,     Int,     T_INT
1952                         , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1953                         HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
1954 DEFINE_CALLSTATICMETHODA(jlong,    Long,    T_LONG
1955                         , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1956                         HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
1957 // Float and double probes don't return value because dtrace doesn't currently support it
1958 DEFINE_CALLSTATICMETHODA(jfloat,   Float,   T_FLOAT
1959                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1960                         HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
1961 DEFINE_CALLSTATICMETHODA(jdouble,  Double,  T_DOUBLE
1962                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
1963                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
1964 
1965 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
1966                          , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
1967 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
1968                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
1969 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
1970                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
1971 
1972 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
1973   JNIWrapper("CallStaticVoidMethod");
1974   HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(env, cls, (uintptr_t) methodID);
1975   DT_VOID_RETURN_MARK(CallStaticVoidMethod);
1976 
1977   va_list args;
1978   va_start(args, methodID);
1979   JavaValue jvalue(T_VOID);
1980   JNI_ArgumentPusherVaArg ap(methodID, args);
1981   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
1982   va_end(args);
1983 JNI_END
1984 
1985 
1986 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
1987   JNIWrapper("CallStaticVoidMethodV");
1988   HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(env, cls, (uintptr_t) methodID);
1989   DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
1990 
1991   JavaValue jvalue(T_VOID);
1992   JNI_ArgumentPusherVaArg ap(methodID, args);
1993   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
1994 JNI_END
1995 
1996 
1997 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
1998   JNIWrapper("CallStaticVoidMethodA");
1999   HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(env, cls, (uintptr_t) methodID);
2000   DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2001 
2002   JavaValue jvalue(T_VOID);
2003   JNI_ArgumentPusherArray ap(methodID, args);
2004   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2005 JNI_END
2006 
2007 
2008 //
2009 // Accessing Fields
2010 //
2011 
2012 
2013 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2014                     , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2015 
2016 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2017           const char *name, const char *sig))
2018   JNIWrapper("GetFieldID");
2019   HOTSPOT_JNI_GETFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
2020   jfieldID ret = 0;
2021   DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2022 
2023   // The class should have been loaded (we have an instance of the class
2024   // passed in) so the field and signature should already be in the symbol
2025   // table.  If they're not there, the field doesn't exist.
2026   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2027   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2028   if (fieldname == NULL || signame == NULL) {
2029     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2030   }
2031   KlassHandle k(THREAD,
2032                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2033   // Make sure class is initialized before handing id's out to fields
2034   k()->initialize(CHECK_NULL);
2035 
2036   fieldDescriptor fd;
2037   if (!k()->oop_is_instance() ||
2038       !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2039     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2040   }
2041 
2042   // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2043   // It may also have hash bits for k, if VerifyJNIFields is turned on.
2044   ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2045   return ret;
2046 JNI_END
2047 
2048 
2049 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2050   JNIWrapper("GetObjectField");
2051   HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID);
2052   oop o = JNIHandles::resolve_non_null(obj);
2053   Klass* k = o->klass();
2054   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2055   // Keep JVMTI addition small and only check enabled flag here.
2056   // jni_GetField_probe() assumes that is okay to create handles.
2057   if (JvmtiExport::should_post_field_access()) {
2058     o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2059   }
2060   jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2061 #if INCLUDE_ALL_GCS
2062   // If G1 is enabled and we are accessing the value of the referent
2063   // field in a reference object then we need to register a non-null
2064   // referent with the SATB barrier.
2065   if (UseG1GC) {
2066     bool needs_barrier = false;
2067 
2068     if (ret != NULL &&
2069         offset == java_lang_ref_Reference::referent_offset &&
2070         InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2071       assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2072       needs_barrier = true;
2073     }
2074 
2075     if (needs_barrier) {
2076       oop referent = JNIHandles::resolve(ret);
2077       G1SATBCardTableModRefBS::enqueue(referent);
2078     }
2079   }
2080 #endif // INCLUDE_ALL_GCS
2081 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(ret);
2082   return ret;
2083 JNI_END
2084 
2085 
2086 
2087 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2088   , EntryProbe, ReturnProbe) \
2089 \
2090   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2091   , ReturnProbe); \
2092 \
2093 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2094   JNIWrapper("Get" XSTR(Result) "Field"); \
2095 \
2096   EntryProbe; \
2097   Return ret = 0;\
2098   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2099 \
2100   oop o = JNIHandles::resolve_non_null(obj); \
2101   Klass* k = o->klass(); \
2102   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2103   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2104   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2105   /* and creates a ResetNoHandleMark.                                   */ \
2106   if (JvmtiExport::should_post_field_access()) { \
2107     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2108   } \
2109   ret = o->Fieldname##_field(offset); \
2110   return ret; \
2111 JNI_END
2112 
2113 DEFINE_GETFIELD(jboolean, bool,   Boolean
2114                 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2115                 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2116 DEFINE_GETFIELD(jbyte,    byte,   Byte
2117                 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2118                 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2119 DEFINE_GETFIELD(jchar,    char,   Char
2120                 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2121                 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2122 DEFINE_GETFIELD(jshort,   short,  Short
2123                 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2124                 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2125 DEFINE_GETFIELD(jint,     int,    Int
2126                 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2127                 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2128 DEFINE_GETFIELD(jlong,    long,   Long
2129                 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2130                 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2131 // Float and double probes don't return value because dtrace doesn't currently support it
2132 DEFINE_GETFIELD(jfloat,   float,  Float
2133                 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2134                 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2135 DEFINE_GETFIELD(jdouble,  double, Double
2136                 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2137                 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2138 
2139 address jni_GetBooleanField_addr() {
2140   return (address)jni_GetBooleanField;
2141 }
2142 address jni_GetByteField_addr() {
2143   return (address)jni_GetByteField;
2144 }
2145 address jni_GetCharField_addr() {
2146   return (address)jni_GetCharField;
2147 }
2148 address jni_GetShortField_addr() {
2149   return (address)jni_GetShortField;
2150 }
2151 address jni_GetIntField_addr() {
2152   return (address)jni_GetIntField;
2153 }
2154 address jni_GetLongField_addr() {
2155   return (address)jni_GetLongField;
2156 }
2157 address jni_GetFloatField_addr() {
2158   return (address)jni_GetFloatField;
2159 }
2160 address jni_GetDoubleField_addr() {
2161   return (address)jni_GetDoubleField;
2162 }
2163 
2164 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2165   JNIWrapper("SetObjectField");
2166   HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(env, obj, (uintptr_t) fieldID, value);
2167   oop o = JNIHandles::resolve_non_null(obj);
2168   Klass* k = o->klass();
2169   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2170   // Keep JVMTI addition small and only check enabled flag here.
2171   // jni_SetField_probe_nh() assumes that is not okay to create handles
2172   // and creates a ResetNoHandleMark.
2173   if (JvmtiExport::should_post_field_modification()) {
2174     jvalue field_value;
2175     field_value.l = value;
2176     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2177   }
2178   o->obj_field_put(offset, JNIHandles::resolve(value));
2179   HOTSPOT_JNI_SETOBJECTFIELD_RETURN();
2180 JNI_END
2181 
2182 
2183 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2184                         , EntryProbe, ReturnProbe) \
2185 \
2186 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2187   JNIWrapper("Set" XSTR(Result) "Field"); \
2188 \
2189   EntryProbe; \
2190 \
2191   oop o = JNIHandles::resolve_non_null(obj); \
2192   Klass* k = o->klass(); \
2193   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \
2194   /* Keep JVMTI addition small and only check enabled flag here.       */ \
2195   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2196   /* and creates a ResetNoHandleMark.                                   */ \
2197   if (JvmtiExport::should_post_field_modification()) { \
2198     jvalue field_value; \
2199     field_value.unionType = value; \
2200     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2201   } \
2202   o->Fieldname##_field_put(offset, value); \
2203   ReturnProbe; \
2204 JNI_END
2205 
2206 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z
2207                 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2208                 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2209 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b
2210                 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2211                 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2212 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c
2213                 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2214                 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2215 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s
2216                 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2217                 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2218 DEFINE_SETFIELD(jint,     int,    Int,     'I', i
2219                 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2220                 HOTSPOT_JNI_SETINTFIELD_RETURN())
2221 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j
2222                 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2223                 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2224 // Float and double probes don't return value because dtrace doesn't currently support it
2225 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f
2226                 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2227                 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2228 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d
2229                 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2230                 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2231 
2232 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2233                     , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2234 
2235 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2236   JNIWrapper("ToReflectedField");
2237   HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(env, cls, (uintptr_t) fieldID, isStatic);
2238   jobject ret = NULL;
2239   DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2240 
2241   fieldDescriptor fd;
2242   bool found = false;
2243   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2244 
2245   assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2246 
2247   if (isStatic) {
2248     // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2249     JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2250     assert(id->is_static_field_id(), "invalid static field id");
2251     found = id->find_local_field(&fd);
2252   } else {
2253     // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2254     int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2255     found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2256   }
2257   assert(found, "bad fieldID passed into jni_ToReflectedField");
2258   oop reflected = Reflection::new_field(&fd, CHECK_NULL);
2259   ret = JNIHandles::make_local(env, reflected);
2260   return ret;
2261 JNI_END
2262 
2263 
2264 //
2265 // Accessing Static Fields
2266 //
2267 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2268                     , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2269 
2270 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2271           const char *name, const char *sig))
2272   JNIWrapper("GetStaticFieldID");
2273   HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(env, clazz, (char *) name, (char *) sig);
2274   jfieldID ret = NULL;
2275   DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2276 
2277   // The class should have been loaded (we have an instance of the class
2278   // passed in) so the field and signature should already be in the symbol
2279   // table.  If they're not there, the field doesn't exist.
2280   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2281   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2282   if (fieldname == NULL || signame == NULL) {
2283     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2284   }
2285   KlassHandle k(THREAD,
2286                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2287   // Make sure class is initialized before handing id's out to static fields
2288   k()->initialize(CHECK_NULL);
2289 
2290   fieldDescriptor fd;
2291   if (!k()->oop_is_instance() ||
2292       !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2293     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2294   }
2295 
2296   // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2297   JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2298   debug_only(id->set_is_static_field_id();)
2299 
2300   debug_only(id->verify(fd.field_holder()));
2301 
2302   ret = jfieldIDWorkaround::to_static_jfieldID(id);
2303   return ret;
2304 JNI_END
2305 
2306 
2307 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2308   JNIWrapper("GetStaticObjectField");
2309   HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID);
2310 #if INCLUDE_JNI_CHECK
2311   DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2312 #endif // INCLUDE_JNI_CHECK
2313   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2314   assert(id->is_static_field_id(), "invalid static field id");
2315   // Keep JVMTI addition small and only check enabled flag here.
2316   // jni_GetField_probe() assumes that is okay to create handles.
2317   if (JvmtiExport::should_post_field_access()) {
2318     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2319   }
2320   jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2321   HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(ret);
2322   return ret;
2323 JNI_END
2324 
2325 
2326 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
2327                               , EntryProbe, ReturnProbe) \
2328 \
2329   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
2330                           , ReturnProbe);                                          \
2331 \
2332 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
2333   JNIWrapper("GetStatic" XSTR(Result) "Field"); \
2334   EntryProbe; \
2335   Return ret = 0;\
2336   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
2337                      (const Return&)ret);\
2338   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2339   assert(id->is_static_field_id(), "invalid static field id"); \
2340   /* Keep JVMTI addition small and only check enabled flag here. */ \
2341   /* jni_GetField_probe() assumes that is okay to create handles. */ \
2342   if (JvmtiExport::should_post_field_access()) { \
2343     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
2344   } \
2345   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
2346   return ret;\
2347 JNI_END
2348 
2349 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean
2350                       , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
2351 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte
2352                       , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref)   )
2353 DEFINE_GETSTATICFIELD(jchar,    char,   Char
2354                       , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref)   )
2355 DEFINE_GETSTATICFIELD(jshort,   short,  Short
2356                       , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref)  )
2357 DEFINE_GETSTATICFIELD(jint,     int,    Int
2358                       , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),     HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref)    )
2359 DEFINE_GETSTATICFIELD(jlong,    long,   Long
2360                       , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref)   )
2361 // Float and double probes don't return value because dtrace doesn't currently support it
2362 DEFINE_GETSTATICFIELD(jfloat,   float,  Float
2363                       , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN()          )
2364 DEFINE_GETSTATICFIELD(jdouble,  double, Double
2365                       , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),  HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN()         )
2366 
2367 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
2368   JNIWrapper("SetStaticObjectField");
2369  HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value);
2370   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2371   assert(id->is_static_field_id(), "invalid static field id");
2372   // Keep JVMTI addition small and only check enabled flag here.
2373   // jni_SetField_probe() assumes that is okay to create handles.
2374   if (JvmtiExport::should_post_field_modification()) {
2375     jvalue field_value;
2376     field_value.l = value;
2377     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
2378   }
2379   id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
2380   HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN();
2381 JNI_END
2382 
2383 
2384 
2385 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
2386                               , EntryProbe, ReturnProbe) \
2387 \
2388 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
2389   JNIWrapper("SetStatic" XSTR(Result) "Field"); \
2390   EntryProbe; \
2391 \
2392   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2393   assert(id->is_static_field_id(), "invalid static field id"); \
2394   /* Keep JVMTI addition small and only check enabled flag here. */ \
2395   /* jni_SetField_probe() assumes that is okay to create handles. */ \
2396   if (JvmtiExport::should_post_field_modification()) { \
2397     jvalue field_value; \
2398     field_value.unionType = value; \
2399     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
2400   } \
2401   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
2402   ReturnProbe;\
2403 JNI_END
2404 
2405 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z
2406                       , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
2407                       HOTSPOT_JNI_SETSTATICBOOLEANFIELD_RETURN())
2408 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b
2409                       , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2410                       HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
2411 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c
2412                       , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2413                       HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
2414 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s
2415                       , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2416                       HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
2417 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i
2418                       , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2419                       HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
2420 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j
2421                       , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
2422                       HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
2423 // Float and double probes don't return value because dtrace doesn't currently support it
2424 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f
2425                       , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
2426                       HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
2427 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d
2428                       , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
2429                       HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
2430 
2431 //
2432 // String Operations
2433 //
2434 
2435 // Unicode Interface
2436 
2437 DT_RETURN_MARK_DECL(NewString, jstring
2438                     , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
2439 
2440 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
2441   JNIWrapper("NewString");
2442  HOTSPOT_JNI_NEWSTRING_ENTRY(env, (uint16_t *) unicodeChars, len);
2443   jstring ret = NULL;
2444   DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
2445   oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
2446   ret = (jstring) JNIHandles::make_local(env, string);
2447   return ret;
2448 JNI_END
2449 
2450 
2451 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
2452   JNIWrapper("GetStringLength");
2453   HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(env, string);
2454   jsize ret = 0;
2455   oop s = JNIHandles::resolve_non_null(string);
2456   if (java_lang_String::value(s) != NULL) {
2457     ret = java_lang_String::length(s);
2458   }
2459  HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(ret);
2460   return ret;
2461 JNI_END
2462 
2463 
2464 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
2465   JNIEnv *env, jstring string, jboolean *isCopy))
2466   JNIWrapper("GetStringChars");
2467  HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
2468   jchar* buf = NULL;
2469   oop s = JNIHandles::resolve_non_null(string);
2470   typeArrayOop s_value = java_lang_String::value(s);
2471   if (s_value != NULL) {
2472     int s_len = java_lang_String::length(s);
2473     int s_offset = java_lang_String::offset(s);
2474     buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal);  // add one for zero termination
2475     /* JNI Specification states return NULL on OOM */
2476     if (buf != NULL) {
2477       if (s_len > 0) {
2478         memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
2479       }
2480       buf[s_len] = 0;
2481       //%note jni_5
2482       if (isCopy != NULL) {
2483         *isCopy = JNI_TRUE;
2484       }
2485     }
2486   }
2487   HOTSPOT_JNI_GETSTRINGCHARS_RETURN(buf);
2488   return buf;
2489 JNI_END
2490 
2491 
2492 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
2493   JNIWrapper("ReleaseStringChars");
2494   HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(env, str, (uint16_t *) chars);
2495   //%note jni_6
2496   if (chars != NULL) {
2497     // Since String objects are supposed to be immutable, don't copy any
2498     // new data back.  A bad user will have to go after the char array.
2499     FreeHeap((void*) chars);
2500   }
2501   HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN();
2502 JNI_END
2503 
2504 
2505 // UTF Interface
2506 
2507 DT_RETURN_MARK_DECL(NewStringUTF, jstring
2508                     , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
2509 
2510 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
2511   JNIWrapper("NewStringUTF");
2512   HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(env, (char *) bytes);
2513   jstring ret;
2514   DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
2515 
2516   oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
2517   ret = (jstring) JNIHandles::make_local(env, result);
2518   return ret;
2519 JNI_END
2520 
2521 
2522 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
2523   JNIWrapper("GetStringUTFLength");
2524  HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(env, string);
2525   jsize ret = 0;
2526   oop java_string = JNIHandles::resolve_non_null(string);
2527   if (java_lang_String::value(java_string) != NULL) {
2528     ret = java_lang_String::utf8_length(java_string);
2529   }
2530   HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(ret);
2531   return ret;
2532 JNI_END
2533 
2534 
2535 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
2536   JNIWrapper("GetStringUTFChars");
2537  HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(env, string, (uintptr_t *) isCopy);
2538   char* result = NULL;
2539   oop java_string = JNIHandles::resolve_non_null(string);
2540   if (java_lang_String::value(java_string) != NULL) {
2541     size_t length = java_lang_String::utf8_length(java_string);
2542     /* JNI Specification states return NULL on OOM */
2543     result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
2544     if (result != NULL) {
2545       java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
2546       if (isCopy != NULL) {
2547         *isCopy = JNI_TRUE;
2548       }
2549     }
2550   }
2551  HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(result);
2552   return result;
2553 JNI_END
2554 
2555 
2556 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
2557   JNIWrapper("ReleaseStringUTFChars");
2558  HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(env, str, (char *) chars);
2559   if (chars != NULL) {
2560     FreeHeap((char*) chars);
2561   }
2562 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN();
2563 JNI_END
2564 
2565 
2566 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
2567   JNIWrapper("GetArrayLength");
2568  HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(env, array);
2569   arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
2570   assert(a->is_array(), "must be array");
2571   jsize ret = a->length();
2572  HOTSPOT_JNI_GETARRAYLENGTH_RETURN(ret);
2573   return ret;
2574 JNI_END
2575 
2576 
2577 //
2578 // Object Array Operations
2579 //
2580 
2581 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
2582                     , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
2583 
2584 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
2585   JNIWrapper("NewObjectArray");
2586  HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(env, length, elementClass, initialElement);
2587   jobjectArray ret = NULL;
2588   DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
2589   KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
2590   Klass* ako = ek()->array_klass(CHECK_NULL);
2591   KlassHandle ak = KlassHandle(THREAD, ako);
2592   ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
2593   objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
2594   oop initial_value = JNIHandles::resolve(initialElement);
2595   if (initial_value != NULL) {  // array already initialized with NULL
2596     for (int index = 0; index < length; index++) {
2597       result->obj_at_put(index, initial_value);
2598     }
2599   }
2600   ret = (jobjectArray) JNIHandles::make_local(env, result);
2601   return ret;
2602 JNI_END
2603 
2604 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
2605                     , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
2606 
2607 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
2608   JNIWrapper("GetObjectArrayElement");
2609  HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(env, array, index);
2610   jobject ret = NULL;
2611   DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
2612   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
2613   if (a->is_within_bounds(index)) {
2614     ret = JNIHandles::make_local(env, a->obj_at(index));
2615     return ret;
2616   } else {
2617     char buf[jintAsStringSize];
2618     sprintf(buf, "%d", index);
2619     THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
2620   }
2621 JNI_END
2622 
2623 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
2624                          , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
2625 
2626 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
2627   JNIWrapper("SetObjectArrayElement");
2628  HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(env, array, index, value);
2629   DT_VOID_RETURN_MARK(SetObjectArrayElement);
2630 
2631   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
2632   oop v = JNIHandles::resolve(value);
2633   if (a->is_within_bounds(index)) {
2634     if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
2635       a->obj_at_put(index, v);
2636     } else {
2637       THROW(vmSymbols::java_lang_ArrayStoreException());
2638     }
2639   } else {
2640     char buf[jintAsStringSize];
2641     sprintf(buf, "%d", index);
2642     THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
2643   }
2644 JNI_END
2645 
2646 
2647 
2648 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
2649                               ,EntryProbe,ReturnProbe)  \
2650 \
2651   DT_RETURN_MARK_DECL(New##Result##Array, Return \
2652                       , ReturnProbe); \
2653 \
2654 JNI_ENTRY(Return, \
2655           jni_New##Result##Array(JNIEnv *env, jsize len)) \
2656   JNIWrapper("New" XSTR(Result) "Array"); \
2657   EntryProbe; \
2658   Return ret = NULL;\
2659   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
2660 \
2661   oop obj= oopFactory::Allocator(len, CHECK_0); \
2662   ret = (Return) JNIHandles::make_local(env, obj); \
2663   return ret;\
2664 JNI_END
2665 
2666 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean,
2667                       HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
2668                       HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
2669 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte,
2670                       HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
2671                       HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
2672 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short,
2673                       HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
2674                       HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
2675 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char,
2676                       HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
2677                       HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
2678 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int,
2679                       HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
2680                       HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
2681 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long,
2682                       HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
2683                       HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
2684 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float,
2685                       HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
2686                       HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
2687 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double,
2688                       HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
2689                       HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
2690 
2691 // Return an address which will fault if the caller writes to it.
2692 
2693 static char* get_bad_address() {
2694   static char* bad_address = NULL;
2695   if (bad_address == NULL) {
2696     size_t size = os::vm_allocation_granularity();
2697     bad_address = os::reserve_memory(size);
2698     if (bad_address != NULL) {
2699       os::protect_memory(bad_address, size, os::MEM_PROT_READ,
2700                          /*is_committed*/false);
2701       MemTracker::record_virtual_memory_type((void*)bad_address, mtInternal);
2702     }
2703   }
2704   return bad_address;
2705 }
2706 
2707 
2708 
2709 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
2710                                       , EntryProbe, ReturnProbe) \
2711 \
2712 JNI_QUICK_ENTRY(ElementType*, \
2713           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
2714   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
2715   EntryProbe; \
2716   /* allocate an chunk of memory in c land */ \
2717   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2718   ElementType* result; \
2719   int len = a->length(); \
2720   if (len == 0) { \
2721     /* Empty array: legal but useless, can't return NULL. \
2722      * Return a pointer to something useless. \
2723      * Avoid asserts in typeArrayOop. */ \
2724     result = (ElementType*)get_bad_address(); \
2725   } else { \
2726     /* JNI Specification states return NULL on OOM */                    \
2727     result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
2728     if (result != NULL) {                                                \
2729       /* copy the array to the c chunk */                                \
2730       memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len);      \
2731       if (isCopy) {                                                      \
2732         *isCopy = JNI_TRUE;                                              \
2733       }                                                                  \
2734     }                                                                    \
2735   } \
2736   ReturnProbe; \
2737   return result; \
2738 JNI_END
2739 
2740 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
2741                               , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2742                               HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
2743 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte
2744                               , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2745                               HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
2746 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short
2747                               , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
2748                               HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
2749 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char
2750                               , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
2751                               HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
2752 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int
2753                               , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2754                               HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
2755 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long
2756                               , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2757                               HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
2758 // Float and double probes don't return value because dtrace doesn't currently support it
2759 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float
2760                               , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2761                               HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
2762 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double
2763                               , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
2764                               HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
2765 
2766 
2767 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
2768                                           , EntryProbe, ReturnProbe);\
2769 \
2770 JNI_QUICK_ENTRY(void, \
2771           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
2772                                              ElementType *buf, jint mode)) \
2773   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
2774   EntryProbe; \
2775   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2776   int len = a->length(); \
2777   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \
2778     if ((mode == 0) || (mode == JNI_COMMIT)) { \
2779       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
2780     } \
2781     if ((mode == 0) || (mode == JNI_ABORT)) { \
2782       FreeHeap(buf); \
2783     } \
2784   } \
2785   ReturnProbe; \
2786 JNI_END
2787 
2788 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
2789                                   , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
2790                                   HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
2791 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte
2792                                   , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
2793                                   HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
2794 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short
2795                                   ,  HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
2796                                   HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
2797 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char
2798                                   ,  HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
2799                                   HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
2800 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int
2801                                   , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
2802                                   HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
2803 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long
2804                                   , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
2805                                   HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
2806 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float
2807                                   , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
2808                                   HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
2809 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double
2810                                   , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
2811                                   HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
2812 
2813 
2814 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
2815                                     , EntryProbe, ReturnProbe); \
2816   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
2817                            , ReturnProbe); \
2818 \
2819 JNI_ENTRY(void, \
2820 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
2821              jsize len, ElementType *buf)) \
2822   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
2823   EntryProbe; \
2824   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
2825   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2826   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
2827     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
2828   } else { \
2829     if (len > 0) { \
2830       int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
2831       memcpy((u_char*) buf, \
2832              (u_char*) src->Tag##_at_addr(start), \
2833              len << sc);                          \
2834     } \
2835   } \
2836 JNI_END
2837 
2838 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
2839                             , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2840                             HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
2841 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte
2842                             ,  HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
2843                             HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
2844 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short
2845                             , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2846                             HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
2847 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char
2848                             ,  HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
2849                             HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
2850 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int
2851                             , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
2852                             HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
2853 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long
2854                             ,  HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2855                             HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
2856 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float
2857                             , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
2858                             HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
2859 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double
2860                             , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
2861                             HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
2862 
2863 
2864 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
2865                                     , EntryProbe, ReturnProbe); \
2866   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
2867                            ,ReturnProbe);           \
2868 \
2869 JNI_ENTRY(void, \
2870 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
2871              jsize len, const ElementType *buf)) \
2872   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
2873   EntryProbe; \
2874   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
2875   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
2876   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
2877     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
2878   } else { \
2879     if (len > 0) { \
2880       int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
2881       memcpy((u_char*) dst->Tag##_at_addr(start), \
2882              (u_char*) buf, \
2883              len << sc);    \
2884     } \
2885   } \
2886 JNI_END
2887 
2888 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
2889                             , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
2890                             HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
2891 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte
2892                             , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
2893                             HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
2894 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short
2895                             , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2896                             HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
2897 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char
2898                             , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
2899                             HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
2900 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int
2901                             , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
2902                             HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
2903 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long
2904                             , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
2905                             HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
2906 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float
2907                             , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
2908                             HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
2909 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double
2910                             , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
2911                             HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
2912 
2913 
2914 //
2915 // Interception of natives
2916 //
2917 
2918 // The RegisterNatives call being attempted tried to register with a method that
2919 // is not native.  Ask JVM TI what prefixes have been specified.  Then check
2920 // to see if the native method is now wrapped with the prefixes.  See the
2921 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
2922 static Method* find_prefixed_native(KlassHandle k,
2923                                       Symbol* name, Symbol* signature, TRAPS) {
2924 #if INCLUDE_JVMTI
2925   ResourceMark rm(THREAD);
2926   Method* method;
2927   int name_len = name->utf8_length();
2928   char* name_str = name->as_utf8();
2929   int prefix_count;
2930   char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
2931   for (int i = 0; i < prefix_count; i++) {
2932     char* prefix = prefixes[i];
2933     int prefix_len = (int)strlen(prefix);
2934 
2935     // try adding this prefix to the method name and see if it matches another method name
2936     int trial_len = name_len + prefix_len;
2937     char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
2938     strcpy(trial_name_str, prefix);
2939     strcat(trial_name_str, name_str);
2940     TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
2941     if (trial_name == NULL) {
2942       continue; // no such symbol, so this prefix wasn't used, try the next prefix
2943     }
2944     method = k()->lookup_method(trial_name, signature);
2945     if (method == NULL) {
2946       continue; // signature doesn't match, try the next prefix
2947     }
2948     if (method->is_native()) {
2949       method->set_is_prefixed_native();
2950       return method; // wahoo, we found a prefixed version of the method, return it
2951     }
2952     // found as non-native, so prefix is good, add it, probably just need more prefixes
2953     name_len = trial_len;
2954     name_str = trial_name_str;
2955   }
2956 #endif // INCLUDE_JVMTI
2957   return NULL; // not found
2958 }
2959 
2960 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
2961   Method* method = k()->lookup_method(name, signature);
2962   if (method == NULL) {
2963     ResourceMark rm;
2964     stringStream st;
2965     st.print("Method %s name or signature does not match",
2966              Method::name_and_sig_as_C_string(k(), name, signature));
2967     THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
2968   }
2969   if (!method->is_native()) {
2970     // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
2971     method = find_prefixed_native(k, name, signature, THREAD);
2972     if (method == NULL) {
2973       ResourceMark rm;
2974       stringStream st;
2975       st.print("Method %s is not declared as native",
2976                Method::name_and_sig_as_C_string(k(), name, signature));
2977       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
2978     }
2979   }
2980 
2981   if (entry != NULL) {
2982     method->set_native_function(entry,
2983       Method::native_bind_event_is_interesting);
2984   } else {
2985     method->clear_native_function();
2986   }
2987   if (PrintJNIResolving) {
2988     ResourceMark rm(THREAD);
2989     tty->print_cr("[Registering JNI native method %s.%s]",
2990       method->method_holder()->external_name(),
2991       method->name()->as_C_string());
2992   }
2993   return true;
2994 }
2995 
2996 DT_RETURN_MARK_DECL(RegisterNatives, jint
2997                     , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
2998 
2999 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
3000                                     const JNINativeMethod *methods,
3001                                     jint nMethods))
3002   JNIWrapper("RegisterNatives");
3003   HOTSPOT_JNI_REGISTERNATIVES_ENTRY(env, clazz, (void *) methods, nMethods);
3004   jint ret = 0;
3005   DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
3006 
3007   KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
3008 
3009   for (int index = 0; index < nMethods; index++) {
3010     const char* meth_name = methods[index].name;
3011     const char* meth_sig = methods[index].signature;
3012     int meth_name_len = (int)strlen(meth_name);
3013 
3014     // The class should have been loaded (we have an instance of the class
3015     // passed in) so the method and signature should already be in the symbol
3016     // table.  If they're not there, the method doesn't exist.
3017     TempNewSymbol  name = SymbolTable::probe(meth_name, meth_name_len);
3018     TempNewSymbol  signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
3019 
3020     if (name == NULL || signature == NULL) {
3021       ResourceMark rm;
3022       stringStream st;
3023       st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
3024       // Must return negative value on failure
3025       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
3026     }
3027 
3028     bool res = register_native(h_k, name, signature,
3029                                (address) methods[index].fnPtr, THREAD);
3030     if (!res) {
3031       ret = -1;
3032       break;
3033     }
3034   }
3035   return ret;
3036 JNI_END
3037 
3038 
3039 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
3040   JNIWrapper("UnregisterNatives");
3041  HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(env, clazz);
3042   Klass* k   = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
3043   //%note jni_2
3044   if (k->oop_is_instance()) {
3045     for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
3046       Method* m = InstanceKlass::cast(k)->methods()->at(index);
3047       if (m->is_native()) {
3048         m->clear_native_function();
3049         m->set_signature_handler(NULL);
3050       }
3051     }
3052   }
3053  HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(0);
3054   return 0;
3055 JNI_END
3056 
3057 //
3058 // Monitor functions
3059 //
3060 
3061 DT_RETURN_MARK_DECL(MonitorEnter, jint
3062                     , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
3063 
3064 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
3065  HOTSPOT_JNI_MONITORENTER_ENTRY(env, jobj);
3066   jint ret = JNI_ERR;
3067   DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
3068 
3069   // If the object is null, we can't do anything with it
3070   if (jobj == NULL) {
3071     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
3072   }
3073 
3074   Handle obj(thread, JNIHandles::resolve_non_null(jobj));
3075   ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
3076   ret = JNI_OK;
3077   return ret;
3078 JNI_END
3079 
3080 DT_RETURN_MARK_DECL(MonitorExit, jint
3081                     , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
3082 
3083 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
3084  HOTSPOT_JNI_MONITOREXIT_ENTRY(env, jobj);
3085   jint ret = JNI_ERR;
3086   DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
3087 
3088   // Don't do anything with a null object
3089   if (jobj == NULL) {
3090     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
3091   }
3092 
3093   Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
3094   ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
3095 
3096   ret = JNI_OK;
3097   return ret;
3098 JNI_END
3099 
3100 //
3101 // Extensions
3102 //
3103 
3104 DT_VOID_RETURN_MARK_DECL(GetStringRegion
3105                          , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
3106 
3107 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
3108   JNIWrapper("GetStringRegion");
3109  HOTSPOT_JNI_GETSTRINGREGION_ENTRY(env, string, start, len, buf);
3110   DT_VOID_RETURN_MARK(GetStringRegion);
3111   oop s = JNIHandles::resolve_non_null(string);
3112   int s_len = java_lang_String::length(s);
3113   if (start < 0 || len < 0 || start + len > s_len) {
3114     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
3115   } else {
3116     if (len > 0) {
3117       int s_offset = java_lang_String::offset(s);
3118       typeArrayOop s_value = java_lang_String::value(s);
3119       memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
3120     }
3121   }
3122 JNI_END
3123 
3124 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
3125                          , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
3126 
3127 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
3128   JNIWrapper("GetStringUTFRegion");
3129  HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(env, string, start, len, buf);
3130   DT_VOID_RETURN_MARK(GetStringUTFRegion);
3131   oop s = JNIHandles::resolve_non_null(string);
3132   int s_len = java_lang_String::length(s);
3133   if (start < 0 || len < 0 || start + len > s_len) {
3134     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
3135   } else {
3136     //%note jni_7
3137     if (len > 0) {
3138       // Assume the buffer is large enough as the JNI spec. does not require user error checking
3139       java_lang_String::as_utf8_string(s, start, len, buf, INT_MAX);
3140       // as_utf8_string null-terminates the result string
3141     } else {
3142       // JDK null-terminates the buffer even in len is zero
3143       if (buf != NULL) {
3144         buf[0] = 0;
3145       }
3146     }
3147   }
3148 JNI_END
3149 
3150 
3151 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
3152   JNIWrapper("GetPrimitiveArrayCritical");
3153  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(env, array, (uintptr_t *) isCopy);
3154   GC_locker::lock_critical(thread);
3155   if (isCopy != NULL) {
3156     *isCopy = JNI_FALSE;
3157   }
3158   oop a = JNIHandles::resolve_non_null(array);
3159   assert(a->is_array(), "just checking");
3160   BasicType type;
3161   if (a->is_objArray()) {
3162     type = T_OBJECT;
3163   } else {
3164     type = TypeArrayKlass::cast(a->klass())->element_type();
3165   }
3166   void* ret = arrayOop(a)->base(type);
3167  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(ret);
3168   return ret;
3169 JNI_END
3170 
3171 
3172 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
3173   JNIWrapper("ReleasePrimitiveArrayCritical");
3174   HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(env, array, carray, mode);
3175   // The array, carray and mode arguments are ignored
3176   GC_locker::unlock_critical(thread);
3177 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN();
3178 JNI_END
3179 
3180 
3181 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
3182   JNIWrapper("GetStringCritical");
3183   HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(env, string, (uintptr_t *) isCopy);
3184   GC_locker::lock_critical(thread);
3185   if (isCopy != NULL) {
3186     *isCopy = JNI_FALSE;
3187   }
3188   oop s = JNIHandles::resolve_non_null(string);
3189   int s_len = java_lang_String::length(s);
3190   typeArrayOop s_value = java_lang_String::value(s);
3191   int s_offset = java_lang_String::offset(s);
3192   const jchar* ret;
3193   if (s_len > 0) {
3194     ret = s_value->char_at_addr(s_offset);
3195   } else {
3196     ret = (jchar*) s_value->base(T_CHAR);
3197   }
3198  HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN((uint16_t *) ret);
3199   return ret;
3200 JNI_END
3201 
3202 
3203 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
3204   JNIWrapper("ReleaseStringCritical");
3205   HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(env, str, (uint16_t *) chars);
3206   // The str and chars arguments are ignored
3207   GC_locker::unlock_critical(thread);
3208 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN();
3209 JNI_END
3210 
3211 
3212 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
3213   JNIWrapper("jni_NewWeakGlobalRef");
3214  HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(env, ref);
3215   Handle ref_handle(thread, JNIHandles::resolve(ref));
3216   jweak ret = JNIHandles::make_weak_global(ref_handle);
3217  HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(ret);
3218   return ret;
3219 JNI_END
3220 
3221 // Must be JNI_ENTRY (with HandleMark)
3222 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
3223   JNIWrapper("jni_DeleteWeakGlobalRef");
3224   HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(env, ref);
3225   JNIHandles::destroy_weak_global(ref);
3226   HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN();
3227 JNI_END
3228 
3229 
3230 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
3231   JNIWrapper("jni_ExceptionCheck");
3232  HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(env);
3233   jni_check_async_exceptions(thread);
3234   jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
3235  HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(ret);
3236   return ret;
3237 JNI_END
3238 
3239 
3240 // Initialization state for three routines below relating to
3241 // java.nio.DirectBuffers
3242 static          jint directBufferSupportInitializeStarted = 0;
3243 static volatile jint directBufferSupportInitializeEnded   = 0;
3244 static volatile jint directBufferSupportInitializeFailed  = 0;
3245 static jclass    bufferClass                 = NULL;
3246 static jclass    directBufferClass           = NULL;
3247 static jclass    directByteBufferClass       = NULL;
3248 static jmethodID directByteBufferConstructor = NULL;
3249 static jfieldID  directBufferAddressField    = NULL;
3250 static jfieldID  bufferCapacityField         = NULL;
3251 
3252 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
3253   Handle loader;            // null (bootstrap) loader
3254   Handle protection_domain; // null protection domain
3255 
3256   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
3257   jclass result =  find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
3258 
3259   if (TraceClassResolution && result != NULL) {
3260     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
3261   }
3262   return result;
3263 }
3264 
3265 // These lookups are done with the NULL (bootstrap) ClassLoader to
3266 // circumvent any security checks that would be done by jni_FindClass.
3267 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
3268 {
3269   if ((bufferClass           = lookupOne(env, "java/nio/Buffer", thread))           == NULL) { return false; }
3270   if ((directBufferClass     = lookupOne(env, "sun/nio/ch/DirectBuffer", thread))   == NULL) { return false; }
3271   if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
3272   return true;
3273 }
3274 JNI_END
3275 
3276 
3277 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
3278   if (directBufferSupportInitializeFailed) {
3279     return false;
3280   }
3281 
3282   if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
3283     if (!lookupDirectBufferClasses(env)) {
3284       directBufferSupportInitializeFailed = 1;
3285       return false;
3286     }
3287 
3288     // Make global references for these
3289     bufferClass           = (jclass) env->NewGlobalRef(bufferClass);
3290     directBufferClass     = (jclass) env->NewGlobalRef(directBufferClass);
3291     directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
3292 
3293     // Get needed field and method IDs
3294     directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
3295     if (env->ExceptionCheck()) {
3296       env->ExceptionClear();
3297       directBufferSupportInitializeFailed = 1;
3298       return false;
3299     }
3300     directBufferAddressField    = env->GetFieldID(bufferClass, "address", "J");
3301     if (env->ExceptionCheck()) {
3302       env->ExceptionClear();
3303       directBufferSupportInitializeFailed = 1;
3304       return false;
3305     }
3306     bufferCapacityField         = env->GetFieldID(bufferClass, "capacity", "I");
3307     if (env->ExceptionCheck()) {
3308       env->ExceptionClear();
3309       directBufferSupportInitializeFailed = 1;
3310       return false;
3311     }
3312 
3313     if ((directByteBufferConstructor == NULL) ||
3314         (directBufferAddressField    == NULL) ||
3315         (bufferCapacityField         == NULL)) {
3316       directBufferSupportInitializeFailed = 1;
3317       return false;
3318     }
3319 
3320     directBufferSupportInitializeEnded = 1;
3321   } else {
3322     while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
3323       os::naked_yield();
3324     }
3325   }
3326 
3327   return !directBufferSupportInitializeFailed;
3328 }
3329 
3330 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
3331 {
3332   // thread_from_jni_environment() will block if VM is gone.
3333   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3334 
3335   JNIWrapper("jni_NewDirectByteBuffer");
3336  HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(env, address, capacity);
3337 
3338   if (!directBufferSupportInitializeEnded) {
3339     if (!initializeDirectBufferSupport(env, thread)) {
3340       HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(NULL);
3341       return NULL;
3342     }
3343   }
3344 
3345   // Being paranoid about accidental sign extension on address
3346   jlong addr = (jlong) ((uintptr_t) address);
3347   // NOTE that package-private DirectByteBuffer constructor currently
3348   // takes int capacity
3349   jint  cap  = (jint)  capacity;
3350   jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
3351   HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(ret);
3352   return ret;
3353 }
3354 
3355 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
3356                     , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
3357 
3358 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
3359 {
3360   // thread_from_jni_environment() will block if VM is gone.
3361   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3362 
3363   JNIWrapper("jni_GetDirectBufferAddress");
3364   HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(env, buf);
3365   void* ret = NULL;
3366   DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
3367 
3368   if (!directBufferSupportInitializeEnded) {
3369     if (!initializeDirectBufferSupport(env, thread)) {
3370       return 0;
3371     }
3372   }
3373 
3374   if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
3375     return 0;
3376   }
3377 
3378   ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
3379   return ret;
3380 }
3381 
3382 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
3383                     , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
3384 
3385 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
3386 {
3387   // thread_from_jni_environment() will block if VM is gone.
3388   JavaThread* thread = JavaThread::thread_from_jni_environment(env);
3389 
3390   JNIWrapper("jni_GetDirectBufferCapacity");
3391   HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(env, buf);
3392   jlong ret = -1;
3393   DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
3394 
3395   if (!directBufferSupportInitializeEnded) {
3396     if (!initializeDirectBufferSupport(env, thread)) {
3397       ret = 0;
3398       return ret;
3399     }
3400   }
3401 
3402   if (buf == NULL) {
3403     return -1;
3404   }
3405 
3406   if (!env->IsInstanceOf(buf, directBufferClass)) {
3407     return -1;
3408   }
3409 
3410   // NOTE that capacity is currently an int in the implementation
3411   ret = env->GetIntField(buf, bufferCapacityField);
3412   return ret;
3413 }
3414 
3415 
3416 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
3417   JNIWrapper("GetVersion");
3418   HOTSPOT_JNI_GETVERSION_ENTRY(env);
3419   HOTSPOT_JNI_GETVERSION_RETURN(CurrentVersion);
3420   return CurrentVersion;
3421 JNI_END
3422 
3423 extern struct JavaVM_ main_vm;
3424 
3425 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
3426   JNIWrapper("jni_GetJavaVM");
3427   HOTSPOT_JNI_GETJAVAVM_ENTRY(env, (void **) vm);
3428   *vm  = (JavaVM *)(&main_vm);
3429   HOTSPOT_JNI_GETJAVAVM_RETURN(JNI_OK);
3430   return JNI_OK;
3431 JNI_END
3432 
3433 // Structure containing all jni functions
3434 struct JNINativeInterface_ jni_NativeInterface = {
3435     NULL,
3436     NULL,
3437     NULL,
3438 
3439     NULL,
3440 
3441     jni_GetVersion,
3442 
3443     jni_DefineClass,
3444     jni_FindClass,
3445 
3446     jni_FromReflectedMethod,
3447     jni_FromReflectedField,
3448 
3449     jni_ToReflectedMethod,
3450 
3451     jni_GetSuperclass,
3452     jni_IsAssignableFrom,
3453 
3454     jni_ToReflectedField,
3455 
3456     jni_Throw,
3457     jni_ThrowNew,
3458     jni_ExceptionOccurred,
3459     jni_ExceptionDescribe,
3460     jni_ExceptionClear,
3461     jni_FatalError,
3462 
3463     jni_PushLocalFrame,
3464     jni_PopLocalFrame,
3465 
3466     jni_NewGlobalRef,
3467     jni_DeleteGlobalRef,
3468     jni_DeleteLocalRef,
3469     jni_IsSameObject,
3470 
3471     jni_NewLocalRef,
3472     jni_EnsureLocalCapacity,
3473 
3474     jni_AllocObject,
3475     jni_NewObject,
3476     jni_NewObjectV,
3477     jni_NewObjectA,
3478 
3479     jni_GetObjectClass,
3480     jni_IsInstanceOf,
3481 
3482     jni_GetMethodID,
3483 
3484     jni_CallObjectMethod,
3485     jni_CallObjectMethodV,
3486     jni_CallObjectMethodA,
3487     jni_CallBooleanMethod,
3488     jni_CallBooleanMethodV,
3489     jni_CallBooleanMethodA,
3490     jni_CallByteMethod,
3491     jni_CallByteMethodV,
3492     jni_CallByteMethodA,
3493     jni_CallCharMethod,
3494     jni_CallCharMethodV,
3495     jni_CallCharMethodA,
3496     jni_CallShortMethod,
3497     jni_CallShortMethodV,
3498     jni_CallShortMethodA,
3499     jni_CallIntMethod,
3500     jni_CallIntMethodV,
3501     jni_CallIntMethodA,
3502     jni_CallLongMethod,
3503     jni_CallLongMethodV,
3504     jni_CallLongMethodA,
3505     jni_CallFloatMethod,
3506     jni_CallFloatMethodV,
3507     jni_CallFloatMethodA,
3508     jni_CallDoubleMethod,
3509     jni_CallDoubleMethodV,
3510     jni_CallDoubleMethodA,
3511     jni_CallVoidMethod,
3512     jni_CallVoidMethodV,
3513     jni_CallVoidMethodA,
3514 
3515     jni_CallNonvirtualObjectMethod,
3516     jni_CallNonvirtualObjectMethodV,
3517     jni_CallNonvirtualObjectMethodA,
3518     jni_CallNonvirtualBooleanMethod,
3519     jni_CallNonvirtualBooleanMethodV,
3520     jni_CallNonvirtualBooleanMethodA,
3521     jni_CallNonvirtualByteMethod,
3522     jni_CallNonvirtualByteMethodV,
3523     jni_CallNonvirtualByteMethodA,
3524     jni_CallNonvirtualCharMethod,
3525     jni_CallNonvirtualCharMethodV,
3526     jni_CallNonvirtualCharMethodA,
3527     jni_CallNonvirtualShortMethod,
3528     jni_CallNonvirtualShortMethodV,
3529     jni_CallNonvirtualShortMethodA,
3530     jni_CallNonvirtualIntMethod,
3531     jni_CallNonvirtualIntMethodV,
3532     jni_CallNonvirtualIntMethodA,
3533     jni_CallNonvirtualLongMethod,
3534     jni_CallNonvirtualLongMethodV,
3535     jni_CallNonvirtualLongMethodA,
3536     jni_CallNonvirtualFloatMethod,
3537     jni_CallNonvirtualFloatMethodV,
3538     jni_CallNonvirtualFloatMethodA,
3539     jni_CallNonvirtualDoubleMethod,
3540     jni_CallNonvirtualDoubleMethodV,
3541     jni_CallNonvirtualDoubleMethodA,
3542     jni_CallNonvirtualVoidMethod,
3543     jni_CallNonvirtualVoidMethodV,
3544     jni_CallNonvirtualVoidMethodA,
3545 
3546     jni_GetFieldID,
3547 
3548     jni_GetObjectField,
3549     jni_GetBooleanField,
3550     jni_GetByteField,
3551     jni_GetCharField,
3552     jni_GetShortField,
3553     jni_GetIntField,
3554     jni_GetLongField,
3555     jni_GetFloatField,
3556     jni_GetDoubleField,
3557 
3558     jni_SetObjectField,
3559     jni_SetBooleanField,
3560     jni_SetByteField,
3561     jni_SetCharField,
3562     jni_SetShortField,
3563     jni_SetIntField,
3564     jni_SetLongField,
3565     jni_SetFloatField,
3566     jni_SetDoubleField,
3567 
3568     jni_GetStaticMethodID,
3569 
3570     jni_CallStaticObjectMethod,
3571     jni_CallStaticObjectMethodV,
3572     jni_CallStaticObjectMethodA,
3573     jni_CallStaticBooleanMethod,
3574     jni_CallStaticBooleanMethodV,
3575     jni_CallStaticBooleanMethodA,
3576     jni_CallStaticByteMethod,
3577     jni_CallStaticByteMethodV,
3578     jni_CallStaticByteMethodA,
3579     jni_CallStaticCharMethod,
3580     jni_CallStaticCharMethodV,
3581     jni_CallStaticCharMethodA,
3582     jni_CallStaticShortMethod,
3583     jni_CallStaticShortMethodV,
3584     jni_CallStaticShortMethodA,
3585     jni_CallStaticIntMethod,
3586     jni_CallStaticIntMethodV,
3587     jni_CallStaticIntMethodA,
3588     jni_CallStaticLongMethod,
3589     jni_CallStaticLongMethodV,
3590     jni_CallStaticLongMethodA,
3591     jni_CallStaticFloatMethod,
3592     jni_CallStaticFloatMethodV,
3593     jni_CallStaticFloatMethodA,
3594     jni_CallStaticDoubleMethod,
3595     jni_CallStaticDoubleMethodV,
3596     jni_CallStaticDoubleMethodA,
3597     jni_CallStaticVoidMethod,
3598     jni_CallStaticVoidMethodV,
3599     jni_CallStaticVoidMethodA,
3600 
3601     jni_GetStaticFieldID,
3602 
3603     jni_GetStaticObjectField,
3604     jni_GetStaticBooleanField,
3605     jni_GetStaticByteField,
3606     jni_GetStaticCharField,
3607     jni_GetStaticShortField,
3608     jni_GetStaticIntField,
3609     jni_GetStaticLongField,
3610     jni_GetStaticFloatField,
3611     jni_GetStaticDoubleField,
3612 
3613     jni_SetStaticObjectField,
3614     jni_SetStaticBooleanField,
3615     jni_SetStaticByteField,
3616     jni_SetStaticCharField,
3617     jni_SetStaticShortField,
3618     jni_SetStaticIntField,
3619     jni_SetStaticLongField,
3620     jni_SetStaticFloatField,
3621     jni_SetStaticDoubleField,
3622 
3623     jni_NewString,
3624     jni_GetStringLength,
3625     jni_GetStringChars,
3626     jni_ReleaseStringChars,
3627 
3628     jni_NewStringUTF,
3629     jni_GetStringUTFLength,
3630     jni_GetStringUTFChars,
3631     jni_ReleaseStringUTFChars,
3632 
3633     jni_GetArrayLength,
3634 
3635     jni_NewObjectArray,
3636     jni_GetObjectArrayElement,
3637     jni_SetObjectArrayElement,
3638 
3639     jni_NewBooleanArray,
3640     jni_NewByteArray,
3641     jni_NewCharArray,
3642     jni_NewShortArray,
3643     jni_NewIntArray,
3644     jni_NewLongArray,
3645     jni_NewFloatArray,
3646     jni_NewDoubleArray,
3647 
3648     jni_GetBooleanArrayElements,
3649     jni_GetByteArrayElements,
3650     jni_GetCharArrayElements,
3651     jni_GetShortArrayElements,
3652     jni_GetIntArrayElements,
3653     jni_GetLongArrayElements,
3654     jni_GetFloatArrayElements,
3655     jni_GetDoubleArrayElements,
3656 
3657     jni_ReleaseBooleanArrayElements,
3658     jni_ReleaseByteArrayElements,
3659     jni_ReleaseCharArrayElements,
3660     jni_ReleaseShortArrayElements,
3661     jni_ReleaseIntArrayElements,
3662     jni_ReleaseLongArrayElements,
3663     jni_ReleaseFloatArrayElements,
3664     jni_ReleaseDoubleArrayElements,
3665 
3666     jni_GetBooleanArrayRegion,
3667     jni_GetByteArrayRegion,
3668     jni_GetCharArrayRegion,
3669     jni_GetShortArrayRegion,
3670     jni_GetIntArrayRegion,
3671     jni_GetLongArrayRegion,
3672     jni_GetFloatArrayRegion,
3673     jni_GetDoubleArrayRegion,
3674 
3675     jni_SetBooleanArrayRegion,
3676     jni_SetByteArrayRegion,
3677     jni_SetCharArrayRegion,
3678     jni_SetShortArrayRegion,
3679     jni_SetIntArrayRegion,
3680     jni_SetLongArrayRegion,
3681     jni_SetFloatArrayRegion,
3682     jni_SetDoubleArrayRegion,
3683 
3684     jni_RegisterNatives,
3685     jni_UnregisterNatives,
3686 
3687     jni_MonitorEnter,
3688     jni_MonitorExit,
3689 
3690     jni_GetJavaVM,
3691 
3692     jni_GetStringRegion,
3693     jni_GetStringUTFRegion,
3694 
3695     jni_GetPrimitiveArrayCritical,
3696     jni_ReleasePrimitiveArrayCritical,
3697 
3698     jni_GetStringCritical,
3699     jni_ReleaseStringCritical,
3700 
3701     jni_NewWeakGlobalRef,
3702     jni_DeleteWeakGlobalRef,
3703 
3704     jni_ExceptionCheck,
3705 
3706     jni_NewDirectByteBuffer,
3707     jni_GetDirectBufferAddress,
3708     jni_GetDirectBufferCapacity,
3709 
3710     // New 1_6 features
3711 
3712     jni_GetObjectRefType
3713 };
3714 
3715 
3716 // For jvmti use to modify jni function table.
3717 // Java threads in native contiues to run until it is transitioned
3718 // to VM at safepoint. Before the transition or before it is blocked
3719 // for safepoint it may access jni function table. VM could crash if
3720 // any java thread access the jni function table in the middle of memcpy.
3721 // To avoid this each function pointers are copied automically.
3722 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
3723   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
3724   intptr_t *a = (intptr_t *) jni_functions();
3725   intptr_t *b = (intptr_t *) new_jni_NativeInterface;
3726   for (uint i=0; i <  sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
3727     Atomic::store_ptr(*b++, a++);
3728   }
3729 }
3730 
3731 void quicken_jni_functions() {
3732   // Replace Get<Primitive>Field with fast versions
3733   if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
3734       && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
3735 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
3736       // windows x86 currently needs SEH wrapper and the gain of the fast
3737       // versions currently isn't certain for server vm on uniprocessor.
3738       && os::is_MP()
3739 #endif
3740   ) {
3741     address func;
3742     func = JNI_FastGetField::generate_fast_get_boolean_field();
3743     if (func != (address)-1) {
3744       jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
3745     }
3746     func = JNI_FastGetField::generate_fast_get_byte_field();
3747     if (func != (address)-1) {
3748       jni_NativeInterface.GetByteField = (GetByteField_t)func;
3749     }
3750     func = JNI_FastGetField::generate_fast_get_char_field();
3751     if (func != (address)-1) {
3752       jni_NativeInterface.GetCharField = (GetCharField_t)func;
3753     }
3754     func = JNI_FastGetField::generate_fast_get_short_field();
3755     if (func != (address)-1) {
3756       jni_NativeInterface.GetShortField = (GetShortField_t)func;
3757     }
3758     func = JNI_FastGetField::generate_fast_get_int_field();
3759     if (func != (address)-1) {
3760       jni_NativeInterface.GetIntField = (GetIntField_t)func;
3761     }
3762     func = JNI_FastGetField::generate_fast_get_long_field();
3763     if (func != (address)-1) {
3764       jni_NativeInterface.GetLongField = (GetLongField_t)func;
3765     }
3766     func = JNI_FastGetField::generate_fast_get_float_field();
3767     if (func != (address)-1) {
3768       jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
3769     }
3770     func = JNI_FastGetField::generate_fast_get_double_field();
3771     if (func != (address)-1) {
3772       jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
3773     }
3774   }
3775 }
3776 
3777 // Returns the function structure
3778 struct JNINativeInterface_* jni_functions() {
3779 #if INCLUDE_JNI_CHECK
3780   if (CheckJNICalls) return jni_functions_check();
3781 #endif // INCLUDE_JNI_CHECK
3782   return &jni_NativeInterface;
3783 }
3784 
3785 // Returns the function structure
3786 struct JNINativeInterface_* jni_functions_nocheck() {
3787   return &jni_NativeInterface;
3788 }
3789 
3790 
3791 // Invocation API
3792 
3793 
3794 // Forward declaration
3795 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
3796 
3797 // Global invocation API vars
3798 volatile jint vm_created = 0;
3799 // Indicate whether it is safe to recreate VM
3800 volatile jint safe_to_recreate_vm = 1;
3801 struct JavaVM_ main_vm = {&jni_InvokeInterface};
3802 
3803 
3804 #define JAVASTACKSIZE (400 * 1024)    /* Default size of a thread java stack */
3805 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
3806 
3807 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
3808                     , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
3809 
3810 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
3811   HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(args_);
3812   JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
3813   jint ret = JNI_ERR;
3814   DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
3815 
3816   if (Threads::is_supported_jni_version(args->version)) {
3817     ret = JNI_OK;
3818   }
3819   // 1.1 style no longer supported in hotspot.
3820   // According the JNI spec, we should update args->version on return.
3821   // We also use the structure to communicate with launcher about default
3822   // stack size.
3823   if (args->version == JNI_VERSION_1_1) {
3824     args->version = JNI_VERSION_1_2;
3825     // javaStackSize is int in arguments structure
3826     assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
3827     args->javaStackSize = (jint)(ThreadStackSize * K);
3828   }
3829   return ret;
3830 }
3831 
3832 #ifndef PRODUCT
3833 
3834 #include "gc/shared/collectedHeap.hpp"
3835 #include "gc/shared/gcTimer.hpp"
3836 #if INCLUDE_ALL_GCS
3837 #include "gc/g1/heapRegionRemSet.hpp"
3838 #endif
3839 #include "compiler/directivesparser.hpp"
3840 #include "memory/guardedMemory.hpp"
3841 #include "utilities/json.hpp"
3842 #include "utilities/ostream.hpp"
3843 #include "utilities/quickSort.hpp"
3844 #if INCLUDE_VM_STRUCTS
3845 #include "runtime/vmStructs.hpp"
3846 #endif
3847 
3848 #define run_unit_test(unit_test_function_call)              \
3849   tty->print_cr("Running test: " #unit_test_function_call); \
3850   unit_test_function_call
3851 
3852 // Forward declaration
3853 void test_semaphore();
3854 void TestOS_test();
3855 void TestReservedSpace_test();
3856 void TestReserveMemorySpecial_test();
3857 void TestVirtualSpace_test();
3858 void TestMetaspaceAux_test();
3859 void TestMetachunk_test();
3860 void TestVirtualSpaceNode_test();
3861 void TestNewSize_test();
3862 void TestOldSize_test();
3863 void TestKlass_test();
3864 void TestBitMap_test();
3865 void TestAsUtf8();
3866 void Test_linked_list();
3867 void TestChunkedList_test();
3868 #if INCLUDE_ALL_GCS
3869 void TestOldFreeSpaceCalculation_test();
3870 void TestG1BiasedArray_test();
3871 void TestBufferingOopClosure_test();
3872 void TestCodeCacheRemSet_test();
3873 void FreeRegionList_test();
3874 void test_memset_with_concurrent_readers();
3875 #endif
3876 
3877 void execute_internal_vm_tests() {
3878   if (ExecuteInternalVMTests) {
3879     tty->print_cr("Running internal VM tests");
3880     run_unit_test(test_semaphore());
3881     run_unit_test(TestOS_test());
3882     run_unit_test(TestReservedSpace_test());
3883     run_unit_test(TestReserveMemorySpecial_test());
3884     run_unit_test(TestVirtualSpace_test());
3885     run_unit_test(TestMetaspaceAux_test());
3886     run_unit_test(TestMetachunk_test());
3887     run_unit_test(TestVirtualSpaceNode_test());
3888     run_unit_test(GlobalDefinitions::test_globals());
3889     run_unit_test(GCTimerAllTest::all());
3890     run_unit_test(arrayOopDesc::test_max_array_length());
3891     run_unit_test(CollectedHeap::test_is_in());
3892     run_unit_test(QuickSort::test_quick_sort());
3893     run_unit_test(GuardedMemory::test_guarded_memory());
3894     run_unit_test(AltHashing::test_alt_hash());
3895     run_unit_test(test_loggc_filename());
3896     run_unit_test(TestNewSize_test());
3897     run_unit_test(TestOldSize_test());
3898     run_unit_test(TestKlass_test());
3899     run_unit_test(TestBitMap_test());
3900     run_unit_test(TestAsUtf8());
3901     run_unit_test(ObjectMonitor::sanity_checks());
3902     run_unit_test(Test_linked_list());
3903     run_unit_test(TestChunkedList_test());
3904     run_unit_test(JSONTest::test());
3905     run_unit_test(DirectivesParser::test());
3906 #if INCLUDE_VM_STRUCTS
3907     run_unit_test(VMStructs::test());
3908 #endif
3909 #if INCLUDE_ALL_GCS
3910     run_unit_test(TestOldFreeSpaceCalculation_test());
3911     run_unit_test(TestG1BiasedArray_test());
3912     run_unit_test(HeapRegionRemSet::test_prt());
3913     run_unit_test(TestBufferingOopClosure_test());
3914     run_unit_test(TestCodeCacheRemSet_test());
3915     if (UseG1GC) {
3916       run_unit_test(FreeRegionList_test());
3917     }
3918     run_unit_test(test_memset_with_concurrent_readers());
3919 #endif
3920     tty->print_cr("All internal VM tests passed");
3921   }
3922 }
3923 
3924 #undef run_unit_test
3925 
3926 #endif
3927 
3928 DT_RETURN_MARK_DECL(CreateJavaVM, jint
3929                     , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
3930 
3931 static jint JNI_CreateJavaVM_inner(JavaVM **vm, void **penv, void *args) {
3932   HOTSPOT_JNI_CREATEJAVAVM_ENTRY((void **) vm, penv, args);
3933 
3934   jint result = JNI_ERR;
3935   DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
3936 
3937   // We're about to use Atomic::xchg for synchronization.  Some Zero
3938   // platforms use the GCC builtin __sync_lock_test_and_set for this,
3939   // but __sync_lock_test_and_set is not guaranteed to do what we want
3940   // on all architectures.  So we check it works before relying on it.
3941 #if defined(ZERO) && defined(ASSERT)
3942   {
3943     jint a = 0xcafebabe;
3944     jint b = Atomic::xchg(0xdeadbeef, &a);
3945     void *c = &a;
3946     void *d = Atomic::xchg_ptr(&b, &c);
3947     assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
3948     assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
3949   }
3950 #endif // ZERO && ASSERT
3951 
3952   // At the moment it's only possible to have one Java VM,
3953   // since some of the runtime state is in global variables.
3954 
3955   // We cannot use our mutex locks here, since they only work on
3956   // Threads. We do an atomic compare and exchange to ensure only
3957   // one thread can call this method at a time
3958 
3959   // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
3960   // the add/dec implementations are dependent on whether we are running
3961   // on a multiprocessor, and at this stage of initialization the os::is_MP
3962   // function used to determine this will always return false. Atomic::xchg
3963   // does not have this problem.
3964   if (Atomic::xchg(1, &vm_created) == 1) {
3965     return JNI_EEXIST;   // already created, or create attempt in progress
3966   }
3967   if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
3968     return JNI_ERR;  // someone tried and failed and retry not allowed.
3969   }
3970 
3971   assert(vm_created == 1, "vm_created is true during the creation");
3972 
3973   /**
3974    * Certain errors during initialization are recoverable and do not
3975    * prevent this method from being called again at a later time
3976    * (perhaps with different arguments).  However, at a certain
3977    * point during initialization if an error occurs we cannot allow
3978    * this function to be called again (or it will crash).  In those
3979    * situations, the 'canTryAgain' flag is set to false, which atomically
3980    * sets safe_to_recreate_vm to 1, such that any new call to
3981    * JNI_CreateJavaVM will immediately fail using the above logic.
3982    */
3983   bool can_try_again = true;
3984 
3985   result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
3986   if (result == JNI_OK) {
3987     JavaThread *thread = JavaThread::current();
3988     assert(!thread->has_pending_exception(), "should have returned not OK");
3989     /* thread is thread_in_vm here */
3990     *vm = (JavaVM *)(&main_vm);
3991     *(JNIEnv**)penv = thread->jni_environment();
3992 
3993     // Tracks the time application was running before GC
3994     RuntimeService::record_application_start();
3995 
3996     // Notify JVMTI
3997     if (JvmtiExport::should_post_thread_life()) {
3998        JvmtiExport::post_thread_start(thread);
3999     }
4000 
4001     EventThreadStart event;
4002     if (event.should_commit()) {
4003       event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
4004       event.commit();
4005     }
4006 
4007 #ifndef PRODUCT
4008     // Check if we should compile all classes on bootclasspath
4009     if (CompileTheWorld) ClassLoader::compile_the_world();
4010     if (ReplayCompiles) ciReplay::replay(thread);
4011 
4012     // Some platforms (like Win*) need a wrapper around these test
4013     // functions in order to properly handle error conditions.
4014     test_error_handler();
4015     execute_internal_vm_tests();
4016 #endif
4017 
4018     // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
4019     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
4020   } else {
4021     // If create_vm exits because of a pending exception, exit with that
4022     // exception.  In the future when we figure out how to reclaim memory,
4023     // we may be able to exit with JNI_ERR and allow the calling application
4024     // to continue.
4025     if (Universe::is_fully_initialized()) {
4026       // otherwise no pending exception possible - VM will already have aborted
4027       JavaThread* THREAD = JavaThread::current();
4028       if (HAS_PENDING_EXCEPTION) {
4029         HandleMark hm;
4030         vm_exit_during_initialization(Handle(THREAD, PENDING_EXCEPTION));
4031       }
4032     }
4033 
4034     if (can_try_again) {
4035       // reset safe_to_recreate_vm to 1 so that retrial would be possible
4036       safe_to_recreate_vm = 1;
4037     }
4038 
4039     // Creation failed. We must reset vm_created
4040     *vm = 0;
4041     *(JNIEnv**)penv = 0;
4042     // reset vm_created last to avoid race condition. Use OrderAccess to
4043     // control both compiler and architectural-based reordering.
4044     OrderAccess::release_store(&vm_created, 0);
4045   }
4046 
4047   return result;
4048 
4049 }
4050 
4051 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
4052   jint result = 0;
4053   // On Windows, let CreateJavaVM run with SEH protection
4054 #ifdef _WIN32
4055   __try {
4056 #endif
4057     result = JNI_CreateJavaVM_inner(vm, penv, args);
4058 #ifdef _WIN32
4059   } __except(topLevelExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) {
4060     // Nothing to do.
4061   }
4062 #endif
4063   return result;
4064 }
4065 
4066 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
4067   // See bug 4367188, the wrapper can sometimes cause VM crashes
4068   // JNIWrapper("GetCreatedJavaVMs");
4069 
4070   HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY((void **) vm_buf, bufLen, (uintptr_t *) numVMs);
4071 
4072   if (vm_created) {
4073     if (numVMs != NULL) *numVMs = 1;
4074     if (bufLen > 0)     *vm_buf = (JavaVM *)(&main_vm);
4075   } else {
4076     if (numVMs != NULL) *numVMs = 0;
4077   }
4078   HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(JNI_OK);
4079   return JNI_OK;
4080 }
4081 
4082 extern "C" {
4083 
4084 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
4085                     , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
4086 
4087 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
4088   HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(vm);
4089   jint res = JNI_ERR;
4090   DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
4091 
4092   if (!vm_created) {
4093     res = JNI_ERR;
4094     return res;
4095   }
4096 
4097   JNIWrapper("DestroyJavaVM");
4098   JNIEnv *env;
4099   JavaVMAttachArgs destroyargs;
4100   destroyargs.version = CurrentVersion;
4101   destroyargs.name = (char *)"DestroyJavaVM";
4102   destroyargs.group = NULL;
4103   res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
4104   if (res != JNI_OK) {
4105     return res;
4106   }
4107 
4108   // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
4109   JavaThread* thread = JavaThread::current();
4110   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
4111   if (Threads::destroy_vm()) {
4112     // Should not change thread state, VM is gone
4113     vm_created = false;
4114     res = JNI_OK;
4115     return res;
4116   } else {
4117     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
4118     res = JNI_ERR;
4119     return res;
4120   }
4121 }
4122 
4123 
4124 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
4125   JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
4126 
4127   // Check below commented out from JDK1.2fcs as well
4128   /*
4129   if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
4130     return JNI_EVERSION;
4131   }
4132   */
4133 
4134   Thread* t = ThreadLocalStorage::get_thread_slow();
4135   if (t != NULL) {
4136     // If the thread has been attached this operation is a no-op
4137     *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
4138     return JNI_OK;
4139   }
4140 
4141   // Create a thread and mark it as attaching so it will be skipped by the
4142   // ThreadsListEnumerator - see CR 6404306
4143   JavaThread* thread = new JavaThread(true);
4144 
4145   // Set correct safepoint info. The thread is going to call into Java when
4146   // initializing the Java level thread object. Hence, the correct state must
4147   // be set in order for the Safepoint code to deal with it correctly.
4148   thread->set_thread_state(_thread_in_vm);
4149   // Must do this before initialize_thread_local_storage
4150   thread->record_stack_base_and_size();
4151 
4152   thread->initialize_thread_local_storage();
4153 
4154   if (!os::create_attached_thread(thread)) {
4155     delete thread;
4156     return JNI_ERR;
4157   }
4158   // Enable stack overflow checks
4159   thread->create_stack_guard_pages();
4160 
4161   thread->initialize_tlab();
4162 
4163   thread->cache_global_variables();
4164 
4165   // Crucial that we do not have a safepoint check for this thread, since it has
4166   // not been added to the Thread list yet.
4167   { Threads_lock->lock_without_safepoint_check();
4168     // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
4169     // avoid this thread trying to do a GC before it is added to the thread-list
4170     thread->set_active_handles(JNIHandleBlock::allocate_block());
4171     Threads::add(thread, daemon);
4172     Threads_lock->unlock();
4173   }
4174   // Create thread group and name info from attach arguments
4175   oop group = NULL;
4176   char* thread_name = NULL;
4177   if (args != NULL && Threads::is_supported_jni_version(args->version)) {
4178     group = JNIHandles::resolve(args->group);
4179     thread_name = args->name; // may be NULL
4180   }
4181   if (group == NULL) group = Universe::main_thread_group();
4182 
4183   // Create Java level thread object and attach it to this thread
4184   bool attach_failed = false;
4185   {
4186     EXCEPTION_MARK;
4187     HandleMark hm(THREAD);
4188     Handle thread_group(THREAD, group);
4189     thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
4190     if (HAS_PENDING_EXCEPTION) {
4191       CLEAR_PENDING_EXCEPTION;
4192       // cleanup outside the handle mark.
4193       attach_failed = true;
4194     }
4195   }
4196 
4197   if (attach_failed) {
4198     // Added missing cleanup
4199     thread->cleanup_failed_attach_current_thread();
4200     return JNI_ERR;
4201   }
4202 
4203   // mark the thread as no longer attaching
4204   // this uses a fence to push the change through so we don't have
4205   // to regrab the threads_lock
4206   thread->set_done_attaching_via_jni();
4207 
4208   // Set java thread status.
4209   java_lang_Thread::set_thread_status(thread->threadObj(),
4210               java_lang_Thread::RUNNABLE);
4211 
4212   // Notify the debugger
4213   if (JvmtiExport::should_post_thread_life()) {
4214     JvmtiExport::post_thread_start(thread);
4215   }
4216 
4217   EventThreadStart event;
4218   if (event.should_commit()) {
4219     event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
4220     event.commit();
4221   }
4222 
4223   *(JNIEnv**)penv = thread->jni_environment();
4224 
4225   // Now leaving the VM, so change thread_state. This is normally automatically taken care
4226   // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
4227   // using ThreadStateTransition::transition, we do a callback to the safepoint code if
4228   // needed.
4229 
4230   ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
4231 
4232   // Perform any platform dependent FPU setup
4233   os::setup_fpu();
4234 
4235   return JNI_OK;
4236 }
4237 
4238 
4239 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
4240   HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(vm, penv, _args);
4241   if (!vm_created) {
4242   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
4243     return JNI_ERR;
4244   }
4245 
4246   JNIWrapper("AttachCurrentThread");
4247   jint ret = attach_current_thread(vm, penv, _args, false);
4248   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(ret);
4249   return ret;
4250 }
4251 
4252 
4253 jint JNICALL jni_DetachCurrentThread(JavaVM *vm)  {
4254   HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(vm);
4255   VM_Exit::block_if_vm_exited();
4256 
4257   JNIWrapper("DetachCurrentThread");
4258 
4259   // If the thread has been deattacted the operations is a no-op
4260   if (ThreadLocalStorage::thread() == NULL) {
4261   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
4262     return JNI_OK;
4263   }
4264 
4265   JavaThread* thread = JavaThread::current();
4266   if (thread->has_last_Java_frame()) {
4267   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN((uint32_t) JNI_ERR);
4268     // Can't detach a thread that's running java, that can't work.
4269     return JNI_ERR;
4270   }
4271 
4272   // Safepoint support. Have to do call-back to safepoint code, if in the
4273   // middel of a safepoint operation
4274   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
4275 
4276   // XXX: Note that JavaThread::exit() call below removes the guards on the
4277   // stack pages set up via enable_stack_{red,yellow}_zone() calls
4278   // above in jni_AttachCurrentThread. Unfortunately, while the setting
4279   // of the guards is visible in jni_AttachCurrentThread above,
4280   // the removal of the guards is buried below in JavaThread::exit()
4281   // here. The abstraction should be more symmetrically either exposed
4282   // or hidden (e.g. it could probably be hidden in the same
4283   // (platform-dependent) methods where we do alternate stack
4284   // maintenance work?)
4285   thread->exit(false, JavaThread::jni_detach);
4286   delete thread;
4287 
4288   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(JNI_OK);
4289   return JNI_OK;
4290 }
4291 
4292 DT_RETURN_MARK_DECL(GetEnv, jint
4293                     , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
4294 
4295 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
4296   HOTSPOT_JNI_GETENV_ENTRY(vm, penv, version);
4297   jint ret = JNI_ERR;
4298   DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
4299 
4300   if (!vm_created) {
4301     *penv = NULL;
4302     ret = JNI_EDETACHED;
4303     return ret;
4304   }
4305 
4306   if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
4307     return ret;
4308   }
4309 
4310 #ifndef JVMPI_VERSION_1
4311 // need these in order to be polite about older agents
4312 #define JVMPI_VERSION_1   ((jint)0x10000001)
4313 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
4314 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
4315 #endif // !JVMPI_VERSION_1
4316 
4317   Thread* thread = ThreadLocalStorage::thread();
4318   if (thread != NULL && thread->is_Java_thread()) {
4319     if (Threads::is_supported_jni_version_including_1_1(version)) {
4320       *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
4321       ret = JNI_OK;
4322       return ret;
4323 
4324     } else if (version == JVMPI_VERSION_1 ||
4325                version == JVMPI_VERSION_1_1 ||
4326                version == JVMPI_VERSION_1_2) {
4327       tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
4328       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
4329       ret = JNI_EVERSION;
4330       return ret;
4331     } else if (JvmtiExport::is_jvmdi_version(version)) {
4332       tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
4333       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
4334       ret = JNI_EVERSION;
4335       return ret;
4336     } else {
4337       *penv = NULL;
4338       ret = JNI_EVERSION;
4339       return ret;
4340     }
4341   } else {
4342     *penv = NULL;
4343     ret = JNI_EDETACHED;
4344     return ret;
4345   }
4346 }
4347 
4348 
4349 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
4350   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(vm, penv, _args);
4351   if (!vm_created) {
4352   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN((uint32_t) JNI_ERR);
4353     return JNI_ERR;
4354   }
4355 
4356   JNIWrapper("AttachCurrentThreadAsDaemon");
4357   jint ret = attach_current_thread(vm, penv, _args, true);
4358   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(ret);
4359   return ret;
4360 }
4361 
4362 
4363 } // End extern "C"
4364 
4365 const struct JNIInvokeInterface_ jni_InvokeInterface = {
4366     NULL,
4367     NULL,
4368     NULL,
4369 
4370     jni_DestroyJavaVM,
4371     jni_AttachCurrentThread,
4372     jni_DetachCurrentThread,
4373     jni_GetEnv,
4374     jni_AttachCurrentThreadAsDaemon
4375 };
--- EOF ---