jdk8-mips64-public/hotspot: src/share/vm/prims/jni.cpp@89dcef434423

8059575: JEP-JDK-8043304: Test task: Tiered Compilation level transition tests
Summary: Includes compile_id addition from JDK-8054492
Reviewed-by: andrew

     1 /*

     2  * Copyright (c) 1997, 2018, 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  */

    26 #include "precompiled.hpp"

    27 #include "ci/ciReplay.hpp"

    28 #include "classfile/altHashing.hpp"

    29 #include "classfile/classLoader.hpp"

    30 #include "classfile/javaClasses.hpp"

    31 #include "classfile/symbolTable.hpp"

    32 #include "classfile/systemDictionary.hpp"

    33 #include "classfile/vmSymbols.hpp"

    34 #include "interpreter/linkResolver.hpp"

    35 #include "utilities/macros.hpp"

    36 #include "utilities/ostream.hpp"

    37 #if INCLUDE_ALL_GCS

    38 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"

    39 #endif // INCLUDE_ALL_GCS

    40 #include "memory/allocation.hpp"

    41 #include "memory/allocation.inline.hpp"

    42 #include "memory/gcLocker.inline.hpp"

    43 #include "memory/oopFactory.hpp"

    44 #include "memory/universe.inline.hpp"

    45 #include "oops/instanceKlass.hpp"

    46 #include "oops/instanceOop.hpp"

    47 #include "oops/markOop.hpp"

    48 #include "oops/method.hpp"

    49 #include "oops/objArrayKlass.hpp"

    50 #include "oops/objArrayOop.hpp"

    51 #include "oops/oop.inline.hpp"

    52 #include "oops/symbol.hpp"

    53 #include "oops/typeArrayKlass.hpp"

    54 #include "oops/typeArrayOop.hpp"

    55 #include "prims/jni.h"

    56 #include "prims/jniCheck.hpp"

    57 #include "prims/jniExport.hpp"

    58 #include "prims/jniFastGetField.hpp"

    59 #include "prims/jvm.h"

    60 #include "prims/jvm_misc.hpp"

    61 #include "prims/jvmtiExport.hpp"

    62 #include "prims/jvmtiThreadState.hpp"

    63 #include "runtime/compilationPolicy.hpp"

    64 #include "runtime/fieldDescriptor.hpp"

    65 #include "runtime/fprofiler.hpp"

    66 #include "runtime/handles.inline.hpp"

    67 #include "runtime/interfaceSupport.hpp"

    68 #include "runtime/java.hpp"

    69 #include "runtime/javaCalls.hpp"

    70 #include "runtime/jfieldIDWorkaround.hpp"

    71 #include "runtime/orderAccess.inline.hpp"

    72 #include "runtime/reflection.hpp"

    73 #include "runtime/sharedRuntime.hpp"

    74 #include "runtime/signature.hpp"

    75 #include "runtime/thread.inline.hpp"

    76 #include "runtime/vm_operations.hpp"

    77 #include "services/memTracker.hpp"

    78 #include "services/runtimeService.hpp"

    79 #include "trace/tracing.hpp"

    80 #include "utilities/defaultStream.hpp"

    81 #include "utilities/dtrace.hpp"

    82 #include "utilities/events.hpp"

    83 #include "utilities/histogram.hpp"

    84 #ifdef TARGET_OS_FAMILY_linux

    85 # include "os_linux.inline.hpp"

    86 #endif

    87 #ifdef TARGET_OS_FAMILY_solaris

    88 # include "os_solaris.inline.hpp"

    89 #endif

    90 #ifdef TARGET_OS_FAMILY_windows

    91 # include "os_windows.inline.hpp"

    92 #endif

    93 #ifdef TARGET_OS_FAMILY_bsd

    94 # include "os_bsd.inline.hpp"

    95 #endif

    97 static jint CurrentVersion = JNI_VERSION_1_8;

   100 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace

   101 // '-return' probe regardless of the return path is taken out of the function.

   102 // Methods that have multiple return paths use this to avoid having to

   103 // instrument each return path.  Methods that use CHECK or THROW must use this

   104 // since those macros can cause an immedate uninstrumented return.

   105 //

   106 // In order to get the return value, a reference to the variable containing

   107 // the return value must be passed to the contructor of the object, and

   108 // the return value must be set before return (since the mark object has

   109 // a reference to it).

   110 //

   111 // Example:

   112 // DT_RETURN_MARK_DECL(SomeFunc, int);

   113 // JNI_ENTRY(int, SomeFunc, ...)

   114 //   int return_value = 0;

   115 //   DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);

   116 //   foo(CHECK_0)

   117 //   return_value = 5;

   118 //   return return_value;

   119 // JNI_END

   120 #ifndef USDT2

   121 #define DT_RETURN_MARK_DECL(name, type)                                    \

   122   HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type);                \

   123   DTRACE_ONLY(                                                             \

   124     class DTraceReturnProbeMark_##name {                                   \

   125      public:                                                               \

   126       const type& _ret_ref;                                                \

   127       DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {}         \

   128       ~DTraceReturnProbeMark_##name() {                                    \

   129         HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref);           \

   130       }                                                                    \

   131     }                                                                      \

   132   )

   133 // Void functions are simpler since there's no return value

   134 #define DT_VOID_RETURN_MARK_DECL(name)                                     \

   135   HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return);                      \

   136   DTRACE_ONLY(                                                             \

   137     class DTraceReturnProbeMark_##name {                                   \

   138      public:                                                               \

   139       ~DTraceReturnProbeMark_##name() {                                    \

   140         HS_DTRACE_PROBE0(hotspot_jni, name##__return);                     \

   141       }                                                                    \

   142     }                                                                      \

   143   )

   145 #else /* USDT2 */

   147 #define DT_RETURN_MARK_DECL(name, type, probe)                             \

   148   DTRACE_ONLY(                                                             \

   149     class DTraceReturnProbeMark_##name {                                   \

   150      public:                                                               \

   151       const type& _ret_ref;                                                \

   152       DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {}         \

   153       ~DTraceReturnProbeMark_##name() {                                    \

   154         probe;                                                             \

   155       }                                                                    \

   156     }                                                                      \

   157   )

   158 // Void functions are simpler since there's no return value

   159 #define DT_VOID_RETURN_MARK_DECL(name, probe)                              \

   160   DTRACE_ONLY(                                                             \

   161     class DTraceReturnProbeMark_##name {                                   \

   162      public:                                                               \

   163       ~DTraceReturnProbeMark_##name() {                                    \

   164         probe;                                                             \

   165       }                                                                    \

   166     }                                                                      \

   167   )

   168 #endif /* USDT2 */

   170 // Place these macros in the function to mark the return.  Non-void

   171 // functions need the type and address of the return value.

   172 #define DT_RETURN_MARK(name, type, ref) \

   173   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )

   174 #define DT_VOID_RETURN_MARK(name) \

   175   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )

   178 // Use these to select distinct code for floating-point vs. non-floating point

   179 // situations.  Used from within common macros where we need slightly

   180 // different behavior for Float/Double

   181 #define FP_SELECT_Boolean(intcode, fpcode) intcode

   182 #define FP_SELECT_Byte(intcode, fpcode)    intcode

   183 #define FP_SELECT_Char(intcode, fpcode)    intcode

   184 #define FP_SELECT_Short(intcode, fpcode)   intcode

   185 #define FP_SELECT_Object(intcode, fpcode)  intcode

   186 #define FP_SELECT_Int(intcode, fpcode)     intcode

   187 #define FP_SELECT_Long(intcode, fpcode)    intcode

   188 #define FP_SELECT_Float(intcode, fpcode)   fpcode

   189 #define FP_SELECT_Double(intcode, fpcode)  fpcode

   190 #define FP_SELECT(TypeName, intcode, fpcode) \

   191   FP_SELECT_##TypeName(intcode, fpcode)

   193 #define COMMA ,

   195 // Choose DT_RETURN_MARK macros  based on the type: float/double -> void

   196 // (dtrace doesn't do FP yet)

   197 #ifndef USDT2

   198 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \

   199   FP_SELECT(TypeName, \

   200     DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )

   201 #else /* USDT2 */

   202 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe)    \

   203   FP_SELECT(TypeName, \

   204     DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )

   205 #endif /* USDT2 */

   206 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \

   207   FP_SELECT(TypeName, \

   208     DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )

   211 // out-of-line helpers for class jfieldIDWorkaround:

   213 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {

   214   if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {

   215     uintptr_t as_uint = (uintptr_t) id;

   216     intptr_t offset = raw_instance_offset(id);

   217     if (is_checked_jfieldID(id)) {

   218       if (!klass_hash_ok(k, id)) {

   219         return false;

   220       }

   221     }

   222     return InstanceKlass::cast(k)->contains_field_offset(offset);

   223   } else {

   224     JNIid* result = (JNIid*) id;

   225 #ifdef ASSERT

   226     return result != NULL && result->is_static_field_id();

   227 #else

   228     return result != NULL;

   229 #endif

   230   }

   231 }

   234 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {

   235   if (offset <= small_offset_mask) {

   236     Klass* field_klass = k;

   237     Klass* super_klass = field_klass->super();

   238     // With compressed oops the most super class with nonstatic fields would

   239     // be the owner of fields embedded in the header.

   240     while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&

   241            InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {

   242       field_klass = super_klass;   // super contains the field also

   243       super_klass = field_klass->super();

   244     }

   245     debug_only(No_Safepoint_Verifier nosafepoint;)

   246     uintptr_t klass_hash = field_klass->identity_hash();

   247     return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;

   248   } else {

   249 #if 0

   250     #ifndef PRODUCT

   251     {

   252       ResourceMark rm;

   253       warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());

   254     }

   255     #endif

   256 #endif

   257     return 0;

   258   }

   259 }

   261 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {

   262   uintptr_t as_uint = (uintptr_t) id;

   263   intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;

   264   do {

   265     debug_only(No_Safepoint_Verifier nosafepoint;)

   266     // Could use a non-blocking query for identity_hash here...

   267     if ((k->identity_hash() & klass_mask) == klass_hash)

   268       return true;

   269     k = k->super();

   270   } while (k != NULL);

   271   return false;

   272 }

   274 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {

   275   guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );

   276   uintptr_t as_uint = (uintptr_t) id;

   277   intptr_t offset = raw_instance_offset(id);

   278   if (VerifyJNIFields) {

   279     if (is_checked_jfieldID(id)) {

   280       guarantee(klass_hash_ok(k, id),

   281     "Bug in native code: jfieldID class must match object");

   282     } else {

   283 #if 0

   284       #ifndef PRODUCT

   285       if (Verbose) {

   286   ResourceMark rm;

   287   warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());

   288       }

   289       #endif

   290 #endif

   291     }

   292   }

   293   guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),

   294       "Bug in native code: jfieldID offset must address interior of object");

   295 }

   297 // Wrapper to trace JNI functions

   299 #ifdef ASSERT

   300   Histogram* JNIHistogram;

   301   static volatile jint JNIHistogram_lock = 0;

   303   class JNITraceWrapper : public StackObj {

   304    public:

   305     JNITraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) {

   306       if (TraceJNICalls) {

   307         va_list ap;

   308         va_start(ap, format);

   309         tty->print("JNI ");

   310         tty->vprint_cr(format, ap);

   311         va_end(ap);

   312       }

   313     }

   314   };

   316   class JNIHistogramElement : public HistogramElement {

   317     public:

   318      JNIHistogramElement(const char* name);

   319   };

   321   JNIHistogramElement::JNIHistogramElement(const char* elementName) {

   322     _name = elementName;

   323     uintx count = 0;

   325     while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {

   326       while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {

   327         count +=1;

   328         if ( (WarnOnStalledSpinLock > 0)

   329           && (count % WarnOnStalledSpinLock == 0)) {

   330           warning("JNIHistogram_lock seems to be stalled");

   331         }

   332       }

   333      }

   336     if(JNIHistogram == NULL)

   337       JNIHistogram = new Histogram("JNI Call Counts",100);

   339     JNIHistogram->add_element(this);

   340     Atomic::dec(&JNIHistogram_lock);

   341   }

   343   #define JNICountWrapper(arg)                                     \

   344      static JNIHistogramElement* e = new JNIHistogramElement(arg); \

   345       /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \

   346      if (e != NULL) e->increment_count()

   347   #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)

   348 #else

   349   #define JNIWrapper(arg)

   350 #endif

   353 // Implementation of JNI entries

   355 #ifndef USDT2

   356 DT_RETURN_MARK_DECL(DefineClass, jclass);

   357 #else /* USDT2 */

   358 DT_RETURN_MARK_DECL(DefineClass, jclass

   359                     , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));

   360 #endif /* USDT2 */

   362 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,

   363                                   const jbyte *buf, jsize bufLen))

   364   JNIWrapper("DefineClass");

   366 #ifndef USDT2

   367   DTRACE_PROBE5(hotspot_jni, DefineClass__entry,

   368     env, name, loaderRef, buf, bufLen);

   369 #else /* USDT2 */

   370   HOTSPOT_JNI_DEFINECLASS_ENTRY(

   371     env, (char*) name, loaderRef, (char*) buf, bufLen);

   372 #endif /* USDT2 */

   373   jclass cls = NULL;

   374   DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);

   376   TempNewSymbol class_name = NULL;

   377   // Since exceptions can be thrown, class initialization can take place

   378   // if name is NULL no check for class name in .class stream has to be made.

   379   if (name != NULL) {

   380     const int str_len = (int)strlen(name);

   381     if (str_len > Symbol::max_length()) {

   382       // It's impossible to create this class;  the name cannot fit

   383       // into the constant pool.

   384       THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);

   385     }

   386     class_name = SymbolTable::new_symbol(name, CHECK_NULL);

   387   }

   388   ResourceMark rm(THREAD);

   389   ClassFileStream st((u1*) buf, bufLen, NULL);

   390   Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));

   392   if (UsePerfData && !class_loader.is_null()) {

   393     // check whether the current caller thread holds the lock or not.

   394     // If not, increment the corresponding counter

   395     if (ObjectSynchronizer::

   396         query_lock_ownership((JavaThread*)THREAD, class_loader) !=

   397         ObjectSynchronizer::owner_self) {

   398       ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();

   399     }

   400   }

   401   Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,

   402                                                      Handle(), &st, true,

   403                                                      CHECK_NULL);

   405   if (TraceClassResolution && k != NULL) {

   406     trace_class_resolution(k);

   407   }

   409   cls = (jclass)JNIHandles::make_local(

   410     env, k->java_mirror());

   411   return cls;

   412 JNI_END

   416 static bool first_time_FindClass = true;

   418 #ifndef USDT2

   419 DT_RETURN_MARK_DECL(FindClass, jclass);

   420 #else /* USDT2 */

   421 DT_RETURN_MARK_DECL(FindClass, jclass

   422                     , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));

   423 #endif /* USDT2 */

   425 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))

   426   JNIWrapper("FindClass");

   427 #ifndef USDT2

   428   DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);

   429 #else /* USDT2 */

   430   HOTSPOT_JNI_FINDCLASS_ENTRY(

   431                               env, (char *)name);

   432 #endif /* USDT2 */

   434   jclass result = NULL;

   435   DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);

   437   // Remember if we are the first invocation of jni_FindClass

   438   bool first_time = first_time_FindClass;

   439   first_time_FindClass = false;

   441   // Sanity check the name:  it cannot be null or larger than the maximum size

   442   // name we can fit in the constant pool.

   443   if (name == NULL || (int)strlen(name) > Symbol::max_length()) {

   444     THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);

   445   }

   447   //%note jni_3

   448   Handle loader;

   449   Handle protection_domain;

   450   // Find calling class

   451   instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));

   452   if (k.not_null()) {

   453     loader = Handle(THREAD, k->class_loader());

   454     // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed

   455     // in the correct class context.

   456     if (loader.is_null() &&

   457         k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {

   458       JavaValue result(T_OBJECT);

   459       JavaCalls::call_static(&result, k,

   460                                       vmSymbols::getFromClass_name(),

   461                                       vmSymbols::void_class_signature(),

   462                                       thread);

   463       if (HAS_PENDING_EXCEPTION) {

   464         Handle ex(thread, thread->pending_exception());

   465         CLEAR_PENDING_EXCEPTION;

   466         THROW_HANDLE_0(ex);

   467       }

   468       oop mirror = (oop) result.get_jobject();

   469       loader = Handle(THREAD,

   470         InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());

   471       protection_domain = Handle(THREAD,

   472         InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());

   473     }

   474   } else {

   475     // We call ClassLoader.getSystemClassLoader to obtain the system class loader.

   476     loader = Handle(THREAD, SystemDictionary::java_system_loader());

   477   }

   479   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);

   480   result = find_class_from_class_loader(env, sym, true, loader,

   481                                         protection_domain, true, thread);

   483   if (TraceClassResolution && result != NULL) {

   484     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));

   485   }

   487   // If we were the first invocation of jni_FindClass, we enable compilation again

   488   // rather than just allowing invocation counter to overflow and decay.

   489   // Controlled by flag DelayCompilationDuringStartup.

   490   if (first_time && !CompileTheWorld)

   491     CompilationPolicy::completed_vm_startup();

   493   return result;

   494 JNI_END

   496 #ifndef USDT2

   497 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);

   498 #else /* USDT2 */

   499 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID

   500                     , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));

   501 #endif /* USDT2 */

   503 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))

   504   JNIWrapper("FromReflectedMethod");

   505 #ifndef USDT2

   506   DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);

   507 #else /* USDT2 */

   508   HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(

   509                                         env, method);

   510 #endif /* USDT2 */

   511   jmethodID ret = NULL;

   512   DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);

   514   // method is a handle to a java.lang.reflect.Method object

   515   oop reflected  = JNIHandles::resolve_non_null(method);

   516   oop mirror     = NULL;

   517   int slot       = 0;

   519   if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {

   520     mirror = java_lang_reflect_Constructor::clazz(reflected);

   521     slot   = java_lang_reflect_Constructor::slot(reflected);

   522   } else {

   523     assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");

   524     mirror = java_lang_reflect_Method::clazz(reflected);

   525     slot   = java_lang_reflect_Method::slot(reflected);

   526   }

   527   Klass* k     = java_lang_Class::as_Klass(mirror);

   529   KlassHandle k1(THREAD, k);

   530   // Make sure class is initialized before handing id's out to methods

   531   k1()->initialize(CHECK_NULL);

   532   Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);

   533   ret = m==NULL? NULL : m->jmethod_id();  // return NULL if reflected method deleted

   534   return ret;

   535 JNI_END

   537 #ifndef USDT2

   538 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);

   539 #else /* USDT2 */

   540 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID

   541                     , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));

   542 #endif /* USDT2 */

   544 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))

   545   JNIWrapper("FromReflectedField");

   546 #ifndef USDT2

   547   DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);

   548 #else /* USDT2 */

   549   HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(

   550                                        env, field);

   551 #endif /* USDT2 */

   552   jfieldID ret = NULL;

   553   DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);

   555   // field is a handle to a java.lang.reflect.Field object

   556   oop reflected   = JNIHandles::resolve_non_null(field);

   557   oop mirror      = java_lang_reflect_Field::clazz(reflected);

   558   Klass* k      = java_lang_Class::as_Klass(mirror);

   559   int slot        = java_lang_reflect_Field::slot(reflected);

   560   int modifiers   = java_lang_reflect_Field::modifiers(reflected);

   562   KlassHandle k1(THREAD, k);

   563   // Make sure class is initialized before handing id's out to fields

   564   k1()->initialize(CHECK_NULL);

   566   // First check if this is a static field

   567   if (modifiers & JVM_ACC_STATIC) {

   568     intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );

   569     JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);

   570     assert(id != NULL, "corrupt Field object");

   571     debug_only(id->set_is_static_field_id();)

   572     // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*

   573     ret = jfieldIDWorkaround::to_static_jfieldID(id);

   574     return ret;

   575   }

   577   // The slot is the index of the field description in the field-array

   578   // The jfieldID is the offset of the field within the object

   579   // It may also have hash bits for k, if VerifyJNIFields is turned on.

   580   intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );

   581   assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");

   582   ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);

   583   return ret;

   584 JNI_END

   586 #ifndef USDT2

   587 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);

   588 #else /* USDT2 */

   589 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject

   590                     , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));

   591 #endif /* USDT2 */

   593 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))

   594   JNIWrapper("ToReflectedMethod");

   595 #ifndef USDT2

   596   DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);

   597 #else /* USDT2 */

   598   HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(

   599                                       env, cls, (uintptr_t) method_id, isStatic);

   600 #endif /* USDT2 */

   601   jobject ret = NULL;

   602   DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);

   604   methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));

   605   assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");

   606   oop reflection_method;

   607   if (m->is_initializer()) {

   608     reflection_method = Reflection::new_constructor(m, CHECK_NULL);

   609   } else {

   610     reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);

   611   }

   612   ret = JNIHandles::make_local(env, reflection_method);

   613   return ret;

   614 JNI_END

   616 #ifndef USDT2

   617 DT_RETURN_MARK_DECL(GetSuperclass, jclass);

   618 #else /* USDT2 */

   619 DT_RETURN_MARK_DECL(GetSuperclass, jclass

   620                     , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));

   621 #endif /* USDT2 */

   623 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))

   624   JNIWrapper("GetSuperclass");

   625 #ifndef USDT2

   626   DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);

   627 #else /* USDT2 */

   628   HOTSPOT_JNI_GETSUPERCLASS_ENTRY(

   629                                   env, sub);

   630 #endif /* USDT2 */

   631   jclass obj = NULL;

   632   DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);

   634   oop mirror = JNIHandles::resolve_non_null(sub);

   635   // primitive classes return NULL

   636   if (java_lang_Class::is_primitive(mirror)) return NULL;

   638   // Rules of Class.getSuperClass as implemented by KLass::java_super:

   639   // arrays return Object

   640   // interfaces return NULL

   641   // proper classes return Klass::super()

   642   Klass* k = java_lang_Class::as_Klass(mirror);

   643   if (k->is_interface()) return NULL;

   645   // return mirror for superclass

   646   Klass* super = k->java_super();

   647   // super2 is the value computed by the compiler's getSuperClass intrinsic:

   648   debug_only(Klass* super2 = ( k->oop_is_array()

   649                                  ? SystemDictionary::Object_klass()

   650                                  : k->super() ) );

   651   assert(super == super2,

   652          "java_super computation depends on interface, array, other super");

   653   obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());

   654   return obj;

   655 JNI_END

   657 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))

   658   JNIWrapper("IsSubclassOf");

   659 #ifndef USDT2

   660   DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);

   661 #else /* USDT2 */

   662   HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(

   663                                      env, sub, super);

   664 #endif /* USDT2 */

   665   oop sub_mirror   = JNIHandles::resolve_non_null(sub);

   666   oop super_mirror = JNIHandles::resolve_non_null(super);

   667   if (java_lang_Class::is_primitive(sub_mirror) ||

   668       java_lang_Class::is_primitive(super_mirror)) {

   669     jboolean ret = (sub_mirror == super_mirror);

   670 #ifndef USDT2

   671     DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);

   672 #else /* USDT2 */

   673     HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(

   674                                         ret);

   675 #endif /* USDT2 */

   676     return ret;

   677   }

   678   Klass* sub_klass   = java_lang_Class::as_Klass(sub_mirror);

   679   Klass* super_klass = java_lang_Class::as_Klass(super_mirror);

   680   assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");

   681   jboolean ret = sub_klass->is_subtype_of(super_klass) ?

   682                    JNI_TRUE : JNI_FALSE;

   683 #ifndef USDT2

   684   DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);

   685 #else /* USDT2 */

   686   HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(

   687                                       ret);

   688 #endif /* USDT2 */

   689   return ret;

   690 JNI_END

   692 #ifndef USDT2

   693 DT_RETURN_MARK_DECL(Throw, jint);

   694 #else /* USDT2 */

   695 DT_RETURN_MARK_DECL(Throw, jint

   696                     , HOTSPOT_JNI_THROW_RETURN(_ret_ref));

   697 #endif /* USDT2 */

   699 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))

   700   JNIWrapper("Throw");

   701 #ifndef USDT2

   702   DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);

   703 #else /* USDT2 */

   704   HOTSPOT_JNI_THROW_ENTRY(

   705  env, obj);

   706 #endif /* USDT2 */

   707   jint ret = JNI_OK;

   708   DT_RETURN_MARK(Throw, jint, (const jint&)ret);

   710   THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);

   711   ShouldNotReachHere();

   712   return 0; // Mute compiler.

   713 JNI_END

   715 #ifndef USDT2

   716 DT_RETURN_MARK_DECL(ThrowNew, jint);

   717 #else /* USDT2 */

   718 DT_RETURN_MARK_DECL(ThrowNew, jint

   719                     , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));

   720 #endif /* USDT2 */

   722 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))

   723   JNIWrapper("ThrowNew");

   724 #ifndef USDT2

   725   DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);

   726 #else /* USDT2 */

   727   HOTSPOT_JNI_THROWNEW_ENTRY(

   728                              env, clazz, (char *) message);

   729 #endif /* USDT2 */

   730   jint ret = JNI_OK;

   731   DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);

   733   InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

   734   Symbol*  name = k->name();

   735   Handle class_loader (THREAD,  k->class_loader());

   736   Handle protection_domain (THREAD, k->protection_domain());

   737   THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);

   738   ShouldNotReachHere();

   739   return 0; // Mute compiler.

   740 JNI_END

   743 // JNI functions only transform a pending async exception to a synchronous

   744 // exception in ExceptionOccurred and ExceptionCheck calls, since

   745 // delivering an async exception in other places won't change the native

   746 // code's control flow and would be harmful when native code further calls

   747 // JNI functions with a pending exception. Async exception is also checked

   748 // during the call, so ExceptionOccurred/ExceptionCheck won't return

   749 // false but deliver the async exception at the very end during

   750 // state transition.

   752 static void jni_check_async_exceptions(JavaThread *thread) {

   753   assert(thread == Thread::current(), "must be itself");

   754   thread->check_and_handle_async_exceptions();

   755 }

   757 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))

   758   JNIWrapper("ExceptionOccurred");

   759 #ifndef USDT2

   760   DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);

   761 #else /* USDT2 */

   762   HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(

   763                                       env);

   764 #endif /* USDT2 */

   765   jni_check_async_exceptions(thread);

   766   oop exception = thread->pending_exception();

   767   jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);

   768 #ifndef USDT2

   769   DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);

   770 #else /* USDT2 */

   771   HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(

   772                                        ret);

   773 #endif /* USDT2 */

   774   return ret;

   775 JNI_END

   778 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))

   779   JNIWrapper("ExceptionDescribe");

   780 #ifndef USDT2

   781   DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);

   782 #else /* USDT2 */

   783   HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(

   784                                       env);

   785 #endif /* USDT2 */

   786   if (thread->has_pending_exception()) {

   787     Handle ex(thread, thread->pending_exception());

   788     thread->clear_pending_exception();

   789     if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {

   790       // Don't print anything if we are being killed.

   791     } else {

   792       jio_fprintf(defaultStream::error_stream(), "Exception ");

   793       if (thread != NULL && thread->threadObj() != NULL) {

   794         ResourceMark rm(THREAD);

   795         jio_fprintf(defaultStream::error_stream(),

   796         "in thread \"%s\" ", thread->get_thread_name());

   797       }

   798       if (ex->is_a(SystemDictionary::Throwable_klass())) {

   799         JavaValue result(T_VOID);

   800         JavaCalls::call_virtual(&result,

   801                                 ex,

   802                                 KlassHandle(THREAD,

   803                                   SystemDictionary::Throwable_klass()),

   804                                 vmSymbols::printStackTrace_name(),

   805                                 vmSymbols::void_method_signature(),

   806                                 THREAD);

   807         // If an exception is thrown in the call it gets thrown away. Not much

   808         // we can do with it. The native code that calls this, does not check

   809         // for the exception - hence, it might still be in the thread when DestroyVM gets

   810         // called, potentially causing a few asserts to trigger - since no pending exception

   811         // is expected.

   812         CLEAR_PENDING_EXCEPTION;

   813       } else {

   814         ResourceMark rm(THREAD);

   815         jio_fprintf(defaultStream::error_stream(),

   816         ". Uncaught exception of type %s.",

   817         ex->klass()->external_name());

   818       }

   819     }

   820   }

   821 #ifndef USDT2

   822   DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);

   823 #else /* USDT2 */

   824   HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(

   825                                        );

   826 #endif /* USDT2 */

   827 JNI_END

   830 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))

   831   JNIWrapper("ExceptionClear");

   832 #ifndef USDT2

   833   DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);

   834 #else /* USDT2 */

   835   HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(

   836                                    env);

   837 #endif /* USDT2 */

   839   // The jni code might be using this API to clear java thrown exception.

   840   // So just mark jvmti thread exception state as exception caught.

   841   JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();

   842   if (state != NULL && state->is_exception_detected()) {

   843     state->set_exception_caught();

   844   }

   845   thread->clear_pending_exception();

   846 #ifndef USDT2

   847   DTRACE_PROBE(hotspot_jni, ExceptionClear__return);

   848 #else /* USDT2 */

   849   HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(

   850                                     );

   851 #endif /* USDT2 */

   852 JNI_END

   855 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))

   856   JNIWrapper("FatalError");

   857 #ifndef USDT2

   858   DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);

   859 #else /* USDT2 */

   860   HOTSPOT_JNI_FATALERROR_ENTRY(

   861                                env, (char *) msg);

   862 #endif /* USDT2 */

   863   tty->print_cr("FATAL ERROR in native method: %s", msg);

   864   thread->print_stack();

   865   os::abort(); // Dump core and abort

   866 JNI_END

   869 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))

   870   JNIWrapper("PushLocalFrame");

   871 #ifndef USDT2

   872   DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);

   873 #else /* USDT2 */

   874   HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(

   875                                    env, capacity);

   876 #endif /* USDT2 */

   877   //%note jni_11

   878   if (capacity < 0 ||

   879       ((MaxJNILocalCapacity > 0) && (capacity > MaxJNILocalCapacity))) {

   880 #ifndef USDT2

   881     DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);

   882 #else /* USDT2 */

   883     HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(

   884                                       (uint32_t)JNI_ERR);

   885 #endif /* USDT2 */

   886     return JNI_ERR;

   887   }

   888   JNIHandleBlock* old_handles = thread->active_handles();

   889   JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);

   890   assert(new_handles != NULL, "should not be NULL");

   891   new_handles->set_pop_frame_link(old_handles);

   892   thread->set_active_handles(new_handles);

   893   jint ret = JNI_OK;

   894 #ifndef USDT2

   895   DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);

   896 #else /* USDT2 */

   897   HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(

   898                                     ret);

   899 #endif /* USDT2 */

   900   return ret;

   901 JNI_END

   904 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))

   905   JNIWrapper("PopLocalFrame");

   906 #ifndef USDT2

   907   DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);

   908 #else /* USDT2 */

   909   HOTSPOT_JNI_POPLOCALFRAME_ENTRY(

   910                                   env, result);

   911 #endif /* USDT2 */

   912   //%note jni_11

   913   Handle result_handle(thread, JNIHandles::resolve(result));

   914   JNIHandleBlock* old_handles = thread->active_handles();

   915   JNIHandleBlock* new_handles = old_handles->pop_frame_link();

   916   if (new_handles != NULL) {

   917     // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.

   918     // This way code will still work if PopLocalFrame is called without a corresponding

   919     // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise

   920     // the release_block call will release the blocks.

   921     thread->set_active_handles(new_handles);

   922     old_handles->set_pop_frame_link(NULL);              // clear link we won't release new_handles below

   923     JNIHandleBlock::release_block(old_handles, thread); // may block

   924     result = JNIHandles::make_local(thread, result_handle());

   925   }

   926 #ifndef USDT2

   927   DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);

   928 #else /* USDT2 */

   929   HOTSPOT_JNI_POPLOCALFRAME_RETURN(

   930                                    result);

   931 #endif /* USDT2 */

   932   return result;

   933 JNI_END

   936 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))

   937   JNIWrapper("NewGlobalRef");

   938 #ifndef USDT2

   939   DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);

   940 #else /* USDT2 */

   941   HOTSPOT_JNI_NEWGLOBALREF_ENTRY(

   942                                  env, ref);

   943 #endif /* USDT2 */

   944   Handle ref_handle(thread, JNIHandles::resolve(ref));

   945   jobject ret = JNIHandles::make_global(ref_handle);

   946 #ifndef USDT2

   947   DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);

   948 #else /* USDT2 */

   949   HOTSPOT_JNI_NEWGLOBALREF_RETURN(

   950                                   ret);

   951 #endif /* USDT2 */

   952   return ret;

   953 JNI_END

   955 // Must be JNI_ENTRY (with HandleMark)

   956 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))

   957   JNIWrapper("DeleteGlobalRef");

   958 #ifndef USDT2

   959   DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);

   960 #else /* USDT2 */

   961   HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(

   962                                     env, ref);

   963 #endif /* USDT2 */

   964   JNIHandles::destroy_global(ref);

   965 #ifndef USDT2

   966   DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);

   967 #else /* USDT2 */

   968   HOTSPOT_JNI_DELETEGLOBALREF_RETURN(

   969                                      );

   970 #endif /* USDT2 */

   971 JNI_END

   973 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))

   974   JNIWrapper("DeleteLocalRef");

   975 #ifndef USDT2

   976   DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);

   977 #else /* USDT2 */

   978   HOTSPOT_JNI_DELETELOCALREF_ENTRY(

   979                                    env, obj);

   980 #endif /* USDT2 */

   981   JNIHandles::destroy_local(obj);

   982 #ifndef USDT2

   983   DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);

   984 #else /* USDT2 */

   985   HOTSPOT_JNI_DELETELOCALREF_RETURN(

   986                                     );

   987 #endif /* USDT2 */

   988 JNI_END

   990 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))

   991   JNIWrapper("IsSameObject");

   992 #ifndef USDT2

   993   DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);

   994 #else /* USDT2 */

   995   HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(

   996                                  env, r1, r2);

   997 #endif /* USDT2 */

   998   oop a = JNIHandles::resolve(r1);

   999   oop b = JNIHandles::resolve(r2);

  1000   jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;

  1001 #ifndef USDT2

  1002   DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);

  1003 #else /* USDT2 */

  1004   HOTSPOT_JNI_ISSAMEOBJECT_RETURN(

  1005                                   ret);

  1006 #endif /* USDT2 */

  1007   return ret;

  1008 JNI_END

  1011 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))

  1012   JNIWrapper("NewLocalRef");

  1013 #ifndef USDT2

  1014   DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);

  1015 #else /* USDT2 */

  1016   HOTSPOT_JNI_NEWLOCALREF_ENTRY(

  1017                                 env, ref);

  1018 #endif /* USDT2 */

  1019   jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));

  1020 #ifndef USDT2

  1021   DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);

  1022 #else /* USDT2 */

  1023   HOTSPOT_JNI_NEWLOCALREF_RETURN(

  1024                                  ret);

  1025 #endif /* USDT2 */

  1026   return ret;

  1027 JNI_END

  1029 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))

  1030   JNIWrapper("EnsureLocalCapacity");

  1031 #ifndef USDT2

  1032   DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);

  1033 #else /* USDT2 */

  1034   HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(

  1035                                         env, capacity);

  1036 #endif /* USDT2 */

  1037   jint ret;

  1038   if (capacity >= 0 &&

  1039       ((MaxJNILocalCapacity <= 0) || (capacity <= MaxJNILocalCapacity))) {

  1040     ret = JNI_OK;

  1041   } else {

  1042     ret = JNI_ERR;

  1043   }

  1044 #ifndef USDT2

  1045   DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);

  1046 #else /* USDT2 */

  1047   HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(

  1048                                          ret);

  1049 #endif /* USDT2 */

  1050   return ret;

  1051 JNI_END

  1053 // Return the Handle Type

  1054 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))

  1055   JNIWrapper("GetObjectRefType");

  1056 #ifndef USDT2

  1057   DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);

  1058 #else /* USDT2 */

  1059   HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(

  1060                                      env, obj);

  1061 #endif /* USDT2 */

  1062   jobjectRefType ret;

  1063   if (JNIHandles::is_local_handle(thread, obj) ||

  1064       JNIHandles::is_frame_handle(thread, obj))

  1065     ret = JNILocalRefType;

  1066   else if (JNIHandles::is_global_handle(obj))

  1067     ret = JNIGlobalRefType;

  1068   else if (JNIHandles::is_weak_global_handle(obj))

  1069     ret = JNIWeakGlobalRefType;

  1070   else

  1071     ret = JNIInvalidRefType;

  1072 #ifndef USDT2

  1073   DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);

  1074 #else /* USDT2 */

  1075   HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(

  1076                                       (void *) ret);

  1077 #endif /* USDT2 */

  1078   return ret;

  1079 JNI_END

  1082 class JNI_ArgumentPusher : public SignatureIterator {

  1083  protected:

  1084   JavaCallArguments*  _arguments;

  1086   virtual void get_bool   () = 0;

  1087   virtual void get_char   () = 0;

  1088   virtual void get_short  () = 0;

  1089   virtual void get_byte   () = 0;

  1090   virtual void get_int    () = 0;

  1091   virtual void get_long   () = 0;

  1092   virtual void get_float  () = 0;

  1093   virtual void get_double () = 0;

  1094   virtual void get_object () = 0;

  1096   JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {

  1097     this->_return_type = T_ILLEGAL;

  1098     _arguments = NULL;

  1099   }

  1101  public:

  1102   virtual void iterate( uint64_t fingerprint ) = 0;

  1104   void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }

  1106   inline void do_bool()                     { if (!is_return_type()) get_bool();   }

  1107   inline void do_char()                     { if (!is_return_type()) get_char();   }

  1108   inline void do_short()                    { if (!is_return_type()) get_short();  }

  1109   inline void do_byte()                     { if (!is_return_type()) get_byte();   }

  1110   inline void do_int()                      { if (!is_return_type()) get_int();    }

  1111   inline void do_long()                     { if (!is_return_type()) get_long();   }

  1112   inline void do_float()                    { if (!is_return_type()) get_float();  }

  1113   inline void do_double()                   { if (!is_return_type()) get_double(); }

  1114   inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }

  1115   inline void do_array(int begin, int end)  { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array

  1116   inline void do_void()                     { }

  1118   JavaCallArguments* arguments()     { return _arguments; }

  1119   void push_receiver(Handle h)       { _arguments->push_oop(h); }

  1120 };

  1123 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {

  1124  protected:

  1125   va_list _ap;

  1127   inline void get_bool()   {

  1128     // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and

  1129     // 0 to JNI_FALSE.  Boolean return values from native are normalized the same in

  1130     // TemplateInterpreterGenerator::generate_result_handler_for and

  1131     // SharedRuntime::generate_native_wrapper.

  1132     jboolean b = va_arg(_ap, jint);

  1133     _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE));

  1134   }

  1135   inline void get_char()   { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg

  1136   inline void get_short()  { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg

  1137   inline void get_byte()   { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg

  1138   inline void get_int()    { _arguments->push_int(va_arg(_ap, jint)); }

  1140   // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests

  1142   inline void get_long()   { _arguments->push_long(va_arg(_ap, jlong)); }

  1143   inline void get_float()  { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg

  1144   inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }

  1145   inline void get_object() { _arguments->push_jobject(va_arg(_ap, jobject)); }

  1147   inline void set_ap(va_list rap) {

  1148 #ifdef va_copy

  1149     va_copy(_ap, rap);

  1150 #elif defined (__va_copy)

  1151     __va_copy(_ap, rap);

  1152 #else

  1153     _ap = rap;

  1154 #endif

  1155   }

  1157  public:

  1158   JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)

  1159        : JNI_ArgumentPusher(signature) {

  1160     set_ap(rap);

  1161   }

  1162   JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)

  1163       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {

  1164     set_ap(rap);

  1165   }

  1167   // Optimized path if we have the bitvector form of signature

  1168   void iterate( uint64_t fingerprint ) {

  1169     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments

  1170     else {

  1171       _return_type = (BasicType)((fingerprint >> static_feature_size) &

  1172                                   result_feature_mask);

  1174       assert(fingerprint, "Fingerprint should not be 0");

  1175       fingerprint = fingerprint >> (static_feature_size + result_feature_size);

  1176       while ( 1 ) {

  1177         switch ( fingerprint & parameter_feature_mask ) {

  1178           case bool_parm:

  1179             get_bool();

  1180             break;

  1181           case char_parm:

  1182             get_char();

  1183             break;

  1184           case short_parm:

  1185             get_short();

  1186             break;

  1187           case byte_parm:

  1188             get_byte();

  1189             break;

  1190           case int_parm:

  1191             get_int();

  1192             break;

  1193           case obj_parm:

  1194             get_object();

  1195             break;

  1196           case long_parm:

  1197             get_long();

  1198             break;

  1199           case float_parm:

  1200             get_float();

  1201             break;

  1202           case double_parm:

  1203             get_double();

  1204             break;

  1205           case done_parm:

  1206             return;

  1207             break;

  1208           default:

  1209             ShouldNotReachHere();

  1210             break;

  1211         }

  1212         fingerprint >>= parameter_feature_size;

  1213       }

  1214     }

  1215   }

  1216 };

  1219 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {

  1220  protected:

  1221   const jvalue *_ap;

  1223   inline void get_bool()   {

  1224     // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and

  1225     // 0 to JNI_FALSE.  Boolean return values from native are normalized the same in

  1226     // TemplateInterpreterGenerator::generate_result_handler_for and

  1227     // SharedRuntime::generate_native_wrapper.

  1228     jboolean b = (_ap++)->z;

  1229     _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE));

  1230   }

  1231   inline void get_char()   { _arguments->push_int((jint)(_ap++)->c); }

  1232   inline void get_short()  { _arguments->push_int((jint)(_ap++)->s); }

  1233   inline void get_byte()   { _arguments->push_int((jint)(_ap++)->b); }

  1234   inline void get_int()    { _arguments->push_int((jint)(_ap++)->i); }

  1236   inline void get_long()   { _arguments->push_long((_ap++)->j);  }

  1237   inline void get_float()  { _arguments->push_float((_ap++)->f); }

  1238   inline void get_double() { _arguments->push_double((_ap++)->d);}

  1239   inline void get_object() { _arguments->push_jobject((_ap++)->l); }

  1241   inline void set_ap(const jvalue *rap) { _ap = rap; }

  1243  public:

  1244   JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)

  1245        : JNI_ArgumentPusher(signature) {

  1246     set_ap(rap);

  1247   }

  1248   JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)

  1249       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {

  1250     set_ap(rap);

  1251   }

  1253   // Optimized path if we have the bitvector form of signature

  1254   void iterate( uint64_t fingerprint ) {

  1255     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments

  1256     else {

  1257       _return_type = (BasicType)((fingerprint >> static_feature_size) &

  1258                                   result_feature_mask);

  1259       assert(fingerprint, "Fingerprint should not be 0");

  1260       fingerprint = fingerprint >> (static_feature_size + result_feature_size);

  1261       while ( 1 ) {

  1262         switch ( fingerprint & parameter_feature_mask ) {

  1263           case bool_parm:

  1264             get_bool();

  1265             break;

  1266           case char_parm:

  1267             get_char();

  1268             break;

  1269           case short_parm:

  1270             get_short();

  1271             break;

  1272           case byte_parm:

  1273             get_byte();

  1274             break;

  1275           case int_parm:

  1276             get_int();

  1277             break;

  1278           case obj_parm:

  1279             get_object();

  1280             break;

  1281           case long_parm:

  1282             get_long();

  1283             break;

  1284           case float_parm:

  1285             get_float();

  1286             break;

  1287           case double_parm:

  1288             get_double();

  1289             break;

  1290           case done_parm:

  1291             return;

  1292             break;

  1293           default:

  1294             ShouldNotReachHere();

  1295             break;

  1296         }

  1297         fingerprint >>= parameter_feature_size;

  1298       }

  1299     }

  1300   }

  1301 };

  1304 enum JNICallType {

  1305   JNI_STATIC,

  1306   JNI_VIRTUAL,

  1307   JNI_NONVIRTUAL

  1308 };

  1312 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {

  1313   methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));

  1315   // Create object to hold arguments for the JavaCall, and associate it with

  1316   // the jni parser

  1317   ResourceMark rm(THREAD);

  1318   int number_of_parameters = method->size_of_parameters();

  1319   JavaCallArguments java_args(number_of_parameters);

  1320   args->set_java_argument_object(&java_args);

  1322   assert(method->is_static(), "method should be static");

  1324   // Fill out JavaCallArguments object

  1325   args->iterate( Fingerprinter(method).fingerprint() );

  1326   // Initialize result type

  1327   result->set_type(args->get_ret_type());

  1329   // Invoke the method. Result is returned as oop.

  1330   JavaCalls::call(result, method, &java_args, CHECK);

  1332   // Convert result

  1333   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {

  1334     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));

  1335   }

  1336 }

  1339 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {

  1340   oop recv = JNIHandles::resolve(receiver);

  1341   if (recv == NULL) {

  1342     THROW(vmSymbols::java_lang_NullPointerException());

  1343   }

  1344   Handle h_recv(THREAD, recv);

  1346   int number_of_parameters;

  1347   Method* selected_method;

  1348   {

  1349     Method* m = Method::resolve_jmethod_id(method_id);

  1350     number_of_parameters = m->size_of_parameters();

  1351     Klass* holder = m->method_holder();

  1352     if (call_type != JNI_VIRTUAL) {

  1353         selected_method = m;

  1354     } else if (!m->has_itable_index()) {

  1355       // non-interface call -- for that little speed boost, don't handlize

  1356       debug_only(No_Safepoint_Verifier nosafepoint;)

  1357       // jni_GetMethodID makes sure class is linked and initialized

  1358       // so m should have a valid vtable index.

  1359       assert(m->valid_vtable_index(), "no valid vtable index");

  1360       int vtbl_index = m->vtable_index();

  1361       if (vtbl_index != Method::nonvirtual_vtable_index) {

  1362         Klass* k = h_recv->klass();

  1363         // k might be an arrayKlassOop but all vtables start at

  1364         // the same place. The cast is to avoid virtual call and assertion.

  1365         InstanceKlass *ik = (InstanceKlass*)k;

  1366         selected_method = ik->method_at_vtable(vtbl_index);

  1367       } else {

  1368         // final method

  1369         selected_method = m;

  1370       }

  1371     } else {

  1372       // interface call

  1373       KlassHandle h_holder(THREAD, holder);

  1375       int itbl_index = m->itable_index();

  1376       Klass* k = h_recv->klass();

  1377       selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);

  1378     }

  1379   }

  1381   methodHandle method(THREAD, selected_method);

  1383   // Create object to hold arguments for the JavaCall, and associate it with

  1384   // the jni parser

  1385   ResourceMark rm(THREAD);

  1386   JavaCallArguments java_args(number_of_parameters);

  1387   args->set_java_argument_object(&java_args);

  1389   // handle arguments

  1390   assert(!method->is_static(), "method should not be static");

  1391   args->push_receiver(h_recv); // Push jobject handle

  1393   // Fill out JavaCallArguments object

  1394   args->iterate( Fingerprinter(method).fingerprint() );

  1395   // Initialize result type

  1396   result->set_type(args->get_ret_type());

  1398   // Invoke the method. Result is returned as oop.

  1399   JavaCalls::call(result, method, &java_args, CHECK);

  1401   // Convert result

  1402   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {

  1403     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));

  1404   }

  1405 }

  1408 static instanceOop alloc_object(jclass clazz, TRAPS) {

  1409   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  1410   k()->check_valid_for_instantiation(false, CHECK_NULL);

  1411   InstanceKlass::cast(k())->initialize(CHECK_NULL);

  1412   instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);

  1413   return ih;

  1414 }

  1416 #ifndef USDT2

  1417 DT_RETURN_MARK_DECL(AllocObject, jobject);

  1418 #else /* USDT2 */

  1419 DT_RETURN_MARK_DECL(AllocObject, jobject

  1420                     , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));

  1421 #endif /* USDT2 */

  1423 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))

  1424   JNIWrapper("AllocObject");

  1426 #ifndef USDT2

  1427   DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);

  1428 #else /* USDT2 */

  1429   HOTSPOT_JNI_ALLOCOBJECT_ENTRY(

  1430                                 env, clazz);

  1431 #endif /* USDT2 */

  1432   jobject ret = NULL;

  1433   DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);

  1435   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1436   ret = JNIHandles::make_local(env, i);

  1437   return ret;

  1438 JNI_END

  1440 #ifndef USDT2

  1441 DT_RETURN_MARK_DECL(NewObjectA, jobject);

  1442 #else /* USDT2 */

  1443 DT_RETURN_MARK_DECL(NewObjectA, jobject

  1444                     , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));

  1445 #endif /* USDT2 */

  1447 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))

  1448   JNIWrapper("NewObjectA");

  1449 #ifndef USDT2

  1450   DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);

  1451 #else /* USDT2 */

  1452   HOTSPOT_JNI_NEWOBJECTA_ENTRY(

  1453                                env, clazz, (uintptr_t) methodID);

  1454 #endif /* USDT2 */

  1455   jobject obj = NULL;

  1456   DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);

  1458   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1459   obj = JNIHandles::make_local(env, i);

  1460   JavaValue jvalue(T_VOID);

  1461   JNI_ArgumentPusherArray ap(methodID, args);

  1462   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);

  1463   return obj;

  1464 JNI_END

  1466 #ifndef USDT2

  1467 DT_RETURN_MARK_DECL(NewObjectV, jobject);

  1468 #else /* USDT2 */

  1469 DT_RETURN_MARK_DECL(NewObjectV, jobject

  1470                     , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));

  1471 #endif /* USDT2 */

  1473 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))

  1474   JNIWrapper("NewObjectV");

  1475 #ifndef USDT2

  1476   DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);

  1477 #else /* USDT2 */

  1478   HOTSPOT_JNI_NEWOBJECTV_ENTRY(

  1479                                env, clazz, (uintptr_t) methodID);

  1480 #endif /* USDT2 */

  1481   jobject obj = NULL;

  1482   DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);

  1484   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1485   obj = JNIHandles::make_local(env, i);

  1486   JavaValue jvalue(T_VOID);

  1487   JNI_ArgumentPusherVaArg ap(methodID, args);

  1488   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);

  1489   return obj;

  1490 JNI_END

  1492 #ifndef USDT2

  1493 DT_RETURN_MARK_DECL(NewObject, jobject);

  1494 #else /* USDT2 */

  1495 DT_RETURN_MARK_DECL(NewObject, jobject

  1496                     , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));

  1497 #endif /* USDT2 */

  1499 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))

  1500   JNIWrapper("NewObject");

  1501 #ifndef USDT2

  1502   DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);

  1503 #else /* USDT2 */

  1504   HOTSPOT_JNI_NEWOBJECT_ENTRY(

  1505                               env, clazz, (uintptr_t) methodID);

  1506 #endif /* USDT2 */

  1507   jobject obj = NULL;

  1508   DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);

  1510   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1511   obj = JNIHandles::make_local(env, i);

  1512   va_list args;

  1513   va_start(args, methodID);

  1514   JavaValue jvalue(T_VOID);

  1515   JNI_ArgumentPusherVaArg ap(methodID, args);

  1516   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);

  1517   va_end(args);

  1518   return obj;

  1519 JNI_END

  1522 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))

  1523   JNIWrapper("GetObjectClass");

  1524 #ifndef USDT2

  1525   DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);

  1526 #else /* USDT2 */

  1527   HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(

  1528                                    env, obj);

  1529 #endif /* USDT2 */

  1530   Klass* k = JNIHandles::resolve_non_null(obj)->klass();

  1531   jclass ret =

  1532     (jclass) JNIHandles::make_local(env, k->java_mirror());

  1533 #ifndef USDT2

  1534   DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);

  1535 #else /* USDT2 */

  1536   HOTSPOT_JNI_GETOBJECTCLASS_RETURN(

  1537                                     ret);

  1538 #endif /* USDT2 */

  1539   return ret;

  1540 JNI_END

  1542 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))

  1543   JNIWrapper("IsInstanceOf");

  1544 #ifndef USDT2

  1545   DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);

  1546 #else /* USDT2 */

  1547   HOTSPOT_JNI_ISINSTANCEOF_ENTRY(

  1548                                  env, obj, clazz);

  1549 #endif /* USDT2 */

  1550   jboolean ret = JNI_TRUE;

  1551   if (obj != NULL) {

  1552     ret = JNI_FALSE;

  1553     Klass* k = java_lang_Class::as_Klass(

  1554       JNIHandles::resolve_non_null(clazz));

  1555     if (k != NULL) {

  1556       ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;

  1557     }

  1558   }

  1559 #ifndef USDT2

  1560   DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);

  1561 #else /* USDT2 */

  1562   HOTSPOT_JNI_ISINSTANCEOF_RETURN(

  1563                                   ret);

  1564 #endif /* USDT2 */

  1565   return ret;

  1566 JNI_END

  1569 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,

  1570                                const char *sig, bool is_static, TRAPS) {

  1571   // %%%% This code should probably just call into a method in the LinkResolver

  1572   //

  1573   // The class should have been loaded (we have an instance of the class

  1574   // passed in) so the method and signature should already be in the symbol

  1575   // table.  If they're not there, the method doesn't exist.

  1576   const char *name_to_probe = (name_str == NULL)

  1577                         ? vmSymbols::object_initializer_name()->as_C_string()

  1578                         : name_str;

  1579   TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));

  1580   TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));

  1582   if (name == NULL || signature == NULL) {

  1583     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);

  1584   }

  1586   // Throw a NoSuchMethodError exception if we have an instance of a

  1587   // primitive java.lang.Class

  1588   if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {

  1589     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);

  1590   }

  1592   KlassHandle klass(THREAD,

  1593                java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  1595   // Make sure class is linked and initialized before handing id's out to

  1596   // Method*s.

  1597   klass()->initialize(CHECK_NULL);

  1599   Method* m;

  1600   if (name == vmSymbols::object_initializer_name() ||

  1601       name == vmSymbols::class_initializer_name()) {

  1602     // Never search superclasses for constructors

  1603     if (klass->oop_is_instance()) {

  1604       m = InstanceKlass::cast(klass())->find_method(name, signature);

  1605     } else {

  1606       m = NULL;

  1607     }

  1608   } else {

  1609     m = klass->lookup_method(name, signature);

  1610     if (m == NULL &&  klass->oop_is_instance()) {

  1611       m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);

  1612     }

  1613   }

  1614   if (m == NULL || (m->is_static() != is_static)) {

  1615     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);

  1616   }

  1617   return m->jmethod_id();

  1618 }

  1621 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,

  1622           const char *name, const char *sig))

  1623   JNIWrapper("GetMethodID");

  1624 #ifndef USDT2

  1625   DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);

  1626 #else /* USDT2 */

  1627   HOTSPOT_JNI_GETMETHODID_ENTRY(

  1628                                 env, clazz, (char *) name, (char *) sig);

  1629 #endif /* USDT2 */

  1630   jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);

  1631 #ifndef USDT2

  1632   DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);

  1633 #else /* USDT2 */

  1634   HOTSPOT_JNI_GETMETHODID_RETURN(

  1635                                  (uintptr_t) ret);

  1636 #endif /* USDT2 */

  1637   return ret;

  1638 JNI_END

  1641 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,

  1642           const char *name, const char *sig))

  1643   JNIWrapper("GetStaticMethodID");

  1644 #ifndef USDT2

  1645   DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);

  1646 #else /* USDT2 */

  1647   HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(

  1648                                       env, (char *) clazz, (char *) name, (char *)sig);

  1649 #endif /* USDT2 */

  1650   jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);

  1651 #ifndef USDT2

  1652   DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);

  1653 #else /* USDT2 */

  1654   HOTSPOT_JNI_GETSTATICMETHODID_RETURN(

  1655                                        (uintptr_t) ret);

  1656 #endif /* USDT2 */

  1657   return ret;

  1658 JNI_END

  1662 //

  1663 // Calling Methods

  1664 //

  1666 #ifndef USDT2

  1667 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \

  1668 \

  1669   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\

  1670   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\

  1671   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\

  1672 \

  1673 JNI_ENTRY(ResultType, \

  1674           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \

  1675   JNIWrapper("Call" XSTR(Result) "Method"); \

  1676 \

  1677   DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \

  1678   ResultType ret = 0;\

  1679   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \

  1680                      (const ResultType&)ret);\

  1681 \

  1682   va_list args; \

  1683   va_start(args, methodID); \

  1684   JavaValue jvalue(Tag); \

  1685   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1686   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1687   va_end(args); \

  1688   ret = jvalue.get_##ResultType(); \

  1689   return ret;\

  1690 JNI_END \

  1691 \

  1692 \

  1693 JNI_ENTRY(ResultType, \

  1694           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \

  1695   JNIWrapper("Call" XSTR(Result) "MethodV"); \

  1696 \

  1697   DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \

  1698   ResultType ret = 0;\

  1699   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \

  1700                      (const ResultType&)ret);\

  1701 \

  1702   JavaValue jvalue(Tag); \

  1703   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1704   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1705   ret = jvalue.get_##ResultType(); \

  1706   return ret;\

  1707 JNI_END \

  1708 \

  1709 \

  1710 JNI_ENTRY(ResultType, \

  1711           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \

  1712   JNIWrapper("Call" XSTR(Result) "MethodA"); \

  1713   DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \

  1714   ResultType ret = 0;\

  1715   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \

  1716                      (const ResultType&)ret);\

  1717 \

  1718   JavaValue jvalue(Tag); \

  1719   JNI_ArgumentPusherArray ap(methodID, args); \

  1720   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1721   ret = jvalue.get_##ResultType(); \

  1722   return ret;\

  1723 JNI_END

  1725 // the runtime type of subword integral basic types is integer

  1726 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)

  1727 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE)

  1728 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR)

  1729 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT)

  1731 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT)

  1732 DEFINE_CALLMETHOD(jint,     Int,     T_INT)

  1733 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG)

  1734 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT)

  1735 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE)

  1737 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);

  1738 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);

  1739 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);

  1741 #else /* USDT2 */

  1743 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \

  1744                           , EntryProbe, ReturnProbe)    \

  1745 \

  1746   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \

  1747                           , ReturnProbe);                          \

  1748 \

  1749 JNI_ENTRY(ResultType, \

  1750           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \

  1751   JNIWrapper("Call" XSTR(Result) "Method"); \

  1752 \

  1753   EntryProbe; \

  1754   ResultType ret = 0;\

  1755   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \

  1756                      (const ResultType&)ret);\

  1757 \

  1758   va_list args; \

  1759   va_start(args, methodID); \

  1760   JavaValue jvalue(Tag); \

  1761   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1762   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1763   va_end(args); \

  1764   ret = jvalue.get_##ResultType(); \

  1765   return ret;\

  1766 JNI_END

  1768 // the runtime type of subword integral basic types is integer

  1769 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN

  1770                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1771                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))

  1772 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE

  1773                   , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1774                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))

  1775 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR

  1776                   , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1777                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))

  1778 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT

  1779                   , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1780                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))

  1782 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT

  1783                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1784                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))

  1785 DEFINE_CALLMETHOD(jint,     Int,     T_INT,

  1786                   HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1787                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))

  1788 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG

  1789                   , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1790                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))

  1791 // Float and double probes don't return value because dtrace doesn't currently support it

  1792 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT

  1793                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1794                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())

  1795 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE

  1796                   , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1797                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())

  1799 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \

  1800                           , EntryProbe, ReturnProbe)    \

  1801 \

  1802   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \

  1803                           , ReturnProbe);                          \

  1804 \

  1805 JNI_ENTRY(ResultType, \

  1806           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \

  1807   JNIWrapper("Call" XSTR(Result) "MethodV"); \

  1808 \

  1809   EntryProbe;\

  1810   ResultType ret = 0;\

  1811   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \

  1812                      (const ResultType&)ret);\

  1813 \

  1814   JavaValue jvalue(Tag); \

  1815   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1816   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1817   ret = jvalue.get_##ResultType(); \

  1818   return ret;\

  1819 JNI_END

  1821 // the runtime type of subword integral basic types is integer

  1822 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN

  1823                   , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1824                   HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref))

  1825 DEFINE_CALLMETHODV(jbyte,    Byte,    T_BYTE

  1826                   , HOTSPOT_JNI_CALLBYTEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1827                   HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref))

  1828 DEFINE_CALLMETHODV(jchar,    Char,    T_CHAR

  1829                   , HOTSPOT_JNI_CALLCHARMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1830                   HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref))

  1831 DEFINE_CALLMETHODV(jshort,   Short,   T_SHORT

  1832                   , HOTSPOT_JNI_CALLSHORTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1833                   HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref))

  1835 DEFINE_CALLMETHODV(jobject,  Object,  T_OBJECT

  1836                   , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1837                   HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref))

  1838 DEFINE_CALLMETHODV(jint,     Int,     T_INT,

  1839                   HOTSPOT_JNI_CALLINTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1840                   HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref))

  1841 DEFINE_CALLMETHODV(jlong,    Long,    T_LONG

  1842                   , HOTSPOT_JNI_CALLLONGMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1843                   HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref))

  1844 // Float and double probes don't return value because dtrace doesn't currently support it

  1845 DEFINE_CALLMETHODV(jfloat,   Float,   T_FLOAT

  1846                   , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1847                   HOTSPOT_JNI_CALLFLOATMETHODV_RETURN())

  1848 DEFINE_CALLMETHODV(jdouble,  Double,  T_DOUBLE

  1849                   , HOTSPOT_JNI_CALLDOUBLEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1850                   HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN())

  1852 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \

  1853                           , EntryProbe, ReturnProbe)    \

  1854 \

  1855   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \

  1856                           , ReturnProbe);                          \

  1857 \

  1858 JNI_ENTRY(ResultType, \

  1859           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \

  1860   JNIWrapper("Call" XSTR(Result) "MethodA"); \

  1861   EntryProbe; \

  1862   ResultType ret = 0;\

  1863   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \

  1864                      (const ResultType&)ret);\

  1865 \

  1866   JavaValue jvalue(Tag); \

  1867   JNI_ArgumentPusherArray ap(methodID, args); \

  1868   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1869   ret = jvalue.get_##ResultType(); \

  1870   return ret;\

  1871 JNI_END

  1873 // the runtime type of subword integral basic types is integer

  1874 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN

  1875                   , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1876                   HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref))

  1877 DEFINE_CALLMETHODA(jbyte,    Byte,    T_BYTE

  1878                   , HOTSPOT_JNI_CALLBYTEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1879                   HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref))

  1880 DEFINE_CALLMETHODA(jchar,    Char,    T_CHAR

  1881                   , HOTSPOT_JNI_CALLCHARMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1882                   HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref))

  1883 DEFINE_CALLMETHODA(jshort,   Short,   T_SHORT

  1884                   , HOTSPOT_JNI_CALLSHORTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1885                   HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref))

  1887 DEFINE_CALLMETHODA(jobject,  Object,  T_OBJECT

  1888                   , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1889                   HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref))

  1890 DEFINE_CALLMETHODA(jint,     Int,     T_INT,

  1891                   HOTSPOT_JNI_CALLINTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1892                   HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref))

  1893 DEFINE_CALLMETHODA(jlong,    Long,    T_LONG

  1894                   , HOTSPOT_JNI_CALLLONGMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1895                   HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref))

  1896 // Float and double probes don't return value because dtrace doesn't currently support it

  1897 DEFINE_CALLMETHODA(jfloat,   Float,   T_FLOAT

  1898                   , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1899                   HOTSPOT_JNI_CALLFLOATMETHODA_RETURN())

  1900 DEFINE_CALLMETHODA(jdouble,  Double,  T_DOUBLE

  1901                   , HOTSPOT_JNI_CALLDOUBLEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1902                   HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN())

  1904 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());

  1905 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());

  1906 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());

  1908 #endif /* USDT2 */

  1910 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))

  1911   JNIWrapper("CallVoidMethod");

  1912 #ifndef USDT2

  1913   DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);

  1914 #else /* USDT2 */

  1915   HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(

  1916                                    env, obj, (uintptr_t) methodID);

  1917 #endif /* USDT2 */

  1918   DT_VOID_RETURN_MARK(CallVoidMethod);

  1920   va_list args;

  1921   va_start(args, methodID);

  1922   JavaValue jvalue(T_VOID);

  1923   JNI_ArgumentPusherVaArg ap(methodID, args);

  1924   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);

  1925   va_end(args);

  1926 JNI_END

  1929 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))

  1930   JNIWrapper("CallVoidMethodV");

  1931 #ifndef USDT2

  1932   DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);

  1933 #else /* USDT2 */

  1934   HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(

  1935                                     env, obj, (uintptr_t) methodID);

  1936 #endif /* USDT2 */

  1937   DT_VOID_RETURN_MARK(CallVoidMethodV);

  1939   JavaValue jvalue(T_VOID);

  1940   JNI_ArgumentPusherVaArg ap(methodID, args);

  1941   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);

  1942 JNI_END

  1945 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))

  1946   JNIWrapper("CallVoidMethodA");

  1947 #ifndef USDT2

  1948   DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);

  1949 #else /* USDT2 */

  1950   HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(

  1951                                     env, obj, (uintptr_t) methodID);

  1952 #endif /* USDT2 */

  1953   DT_VOID_RETURN_MARK(CallVoidMethodA);

  1955   JavaValue jvalue(T_VOID);

  1956   JNI_ArgumentPusherArray ap(methodID, args);

  1957   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);

  1958 JNI_END

  1961 #ifndef USDT2

  1962 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \

  1963 \

  1964   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\

  1965   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\

  1966   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\

  1967 \

  1968 JNI_ENTRY(ResultType, \

  1969           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \

  1970   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \

  1971 \

  1972   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\

  1973   ResultType ret;\

  1974   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \

  1975                      (const ResultType&)ret);\

  1976 \

  1977   va_list args; \

  1978   va_start(args, methodID); \

  1979   JavaValue jvalue(Tag); \

  1980   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1981   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  1982   va_end(args); \

  1983   ret = jvalue.get_##ResultType(); \

  1984   return ret;\

  1985 JNI_END \

  1986 \

  1987 JNI_ENTRY(ResultType, \

  1988           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \

  1989   JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \

  1990   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\

  1991   ResultType ret;\

  1992   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \

  1993                      (const ResultType&)ret);\

  1994 \

  1995   JavaValue jvalue(Tag); \

  1996   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1997   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  1998   ret = jvalue.get_##ResultType(); \

  1999   return ret;\

  2000 JNI_END \

  2001 \

  2002 JNI_ENTRY(ResultType, \

  2003           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \

  2004   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \

  2005   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\

  2006   ResultType ret;\

  2007   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \

  2008                      (const ResultType&)ret);\

  2009 \

  2010   JavaValue jvalue(Tag); \

  2011   JNI_ArgumentPusherArray ap(methodID, args); \

  2012   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2013   ret = jvalue.get_##ResultType(); \

  2014   return ret;\

  2015 JNI_END

  2017 // the runtime type of subword integral basic types is integer

  2018 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)

  2019 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE)

  2020 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR)

  2021 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT)

  2023 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT)

  2024 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT)

  2025 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG)

  2026 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT)

  2027 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE)

  2030 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);

  2031 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);

  2032 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);

  2034 #else /* USDT2 */

  2036 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \

  2037                                     , EntryProbe, ReturnProbe)      \

  2038 \

  2039   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \

  2040                           , ReturnProbe);\

  2041 \

  2042 JNI_ENTRY(ResultType, \

  2043           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \

  2044   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \

  2045 \

  2046   EntryProbe;\

  2047   ResultType ret;\

  2048   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \

  2049                      (const ResultType&)ret);\

  2050 \

  2051   va_list args; \

  2052   va_start(args, methodID); \

  2053   JavaValue jvalue(Tag); \

  2054   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2055   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2056   va_end(args); \

  2057   ret = jvalue.get_##ResultType(); \

  2058   return ret;\

  2059 JNI_END

  2061 // the runtime type of subword integral basic types is integer

  2062 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN

  2063                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2064                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))

  2065 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE

  2066                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2067                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))

  2068 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR

  2069                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2070                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))

  2071 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT

  2072                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2073                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))

  2075 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT

  2076                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2077                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))

  2078 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT

  2079                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2080                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))

  2081 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG

  2082                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2083 // Float and double probes don't return value because dtrace doesn't currently support it

  2084                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))

  2085 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT

  2086                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2087                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())

  2088 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE

  2089                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2090                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())

  2092 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \

  2093                                     , EntryProbe, ReturnProbe)      \

  2094 \

  2095   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \

  2096                           , ReturnProbe);\

  2097 \

  2098 JNI_ENTRY(ResultType, \

  2099           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \

  2100   JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \

  2101 \

  2102   EntryProbe;\

  2103   ResultType ret;\

  2104   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \

  2105                      (const ResultType&)ret);\

  2106 \

  2107   JavaValue jvalue(Tag); \

  2108   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2109   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2110   ret = jvalue.get_##ResultType(); \

  2111   return ret;\

  2112 JNI_END

  2114 // the runtime type of subword integral basic types is integer

  2115 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN

  2116                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2117                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))

  2118 DEFINE_CALLNONVIRTUALMETHODV(jbyte,    Byte,    T_BYTE

  2119                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2120                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))

  2121 DEFINE_CALLNONVIRTUALMETHODV(jchar,    Char,    T_CHAR

  2122                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2123                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))

  2124 DEFINE_CALLNONVIRTUALMETHODV(jshort,   Short,   T_SHORT

  2125                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2126                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))

  2128 DEFINE_CALLNONVIRTUALMETHODV(jobject,  Object,  T_OBJECT

  2129                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2130                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))

  2131 DEFINE_CALLNONVIRTUALMETHODV(jint,     Int,     T_INT

  2132                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2133                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))

  2134 DEFINE_CALLNONVIRTUALMETHODV(jlong,    Long,    T_LONG

  2135                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2136 // Float and double probes don't return value because dtrace doesn't currently support it

  2137                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))

  2138 DEFINE_CALLNONVIRTUALMETHODV(jfloat,   Float,   T_FLOAT

  2139                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2140                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())

  2141 DEFINE_CALLNONVIRTUALMETHODV(jdouble,  Double,  T_DOUBLE

  2142                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2143                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())

  2145 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \

  2146                                     , EntryProbe, ReturnProbe)      \

  2147 \

  2148   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \

  2149                           , ReturnProbe);\

  2150 \

  2151 JNI_ENTRY(ResultType, \

  2152           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \

  2153   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \

  2154 \

  2155   EntryProbe;\

  2156   ResultType ret;\

  2157   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \

  2158                      (const ResultType&)ret);\

  2159 \

  2160   JavaValue jvalue(Tag); \

  2161   JNI_ArgumentPusherArray ap(methodID, args); \

  2162   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2163   ret = jvalue.get_##ResultType(); \

  2164   return ret;\

  2165 JNI_END

  2167 // the runtime type of subword integral basic types is integer

  2168 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN

  2169                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2170                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))

  2171 DEFINE_CALLNONVIRTUALMETHODA(jbyte,    Byte,    T_BYTE

  2172                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2173                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))

  2174 DEFINE_CALLNONVIRTUALMETHODA(jchar,    Char,    T_CHAR

  2175                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2176                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))

  2177 DEFINE_CALLNONVIRTUALMETHODA(jshort,   Short,   T_SHORT

  2178                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2179                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))

  2181 DEFINE_CALLNONVIRTUALMETHODA(jobject,  Object,  T_OBJECT

  2182                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2183                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))

  2184 DEFINE_CALLNONVIRTUALMETHODA(jint,     Int,     T_INT

  2185                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2186                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))

  2187 DEFINE_CALLNONVIRTUALMETHODA(jlong,    Long,    T_LONG

  2188                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2189 // Float and double probes don't return value because dtrace doesn't currently support it

  2190                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))

  2191 DEFINE_CALLNONVIRTUALMETHODA(jfloat,   Float,   T_FLOAT

  2192                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2193                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())

  2194 DEFINE_CALLNONVIRTUALMETHODA(jdouble,  Double,  T_DOUBLE

  2195                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2196                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())

  2198 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod

  2199                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());

  2200 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV

  2201                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());

  2202 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA

  2203                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());

  2204 #endif /* USDT2 */

  2206 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))

  2207   JNIWrapper("CallNonvirtualVoidMethod");

  2209 #ifndef USDT2

  2210   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,

  2211                env, obj, cls, methodID);

  2212 #else /* USDT2 */

  2213   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(

  2214                env, obj, cls, (uintptr_t) methodID);

  2215 #endif /* USDT2 */

  2216   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);

  2218   va_list args;

  2219   va_start(args, methodID);

  2220   JavaValue jvalue(T_VOID);

  2221   JNI_ArgumentPusherVaArg ap(methodID, args);

  2222   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);

  2223   va_end(args);

  2224 JNI_END

  2227 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))

  2228   JNIWrapper("CallNonvirtualVoidMethodV");

  2230 #ifndef USDT2

  2231   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,

  2232                env, obj, cls, methodID);

  2233 #else /* USDT2 */

  2234   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(

  2235                env, obj, cls, (uintptr_t) methodID);

  2236 #endif /* USDT2 */

  2237   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);

  2239   JavaValue jvalue(T_VOID);

  2240   JNI_ArgumentPusherVaArg ap(methodID, args);

  2241   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);

  2242 JNI_END

  2245 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))

  2246   JNIWrapper("CallNonvirtualVoidMethodA");

  2247 #ifndef USDT2

  2248   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,

  2249                 env, obj, cls, methodID);

  2250 #else /* USDT2 */

  2251   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(

  2252                 env, obj, cls, (uintptr_t) methodID);

  2253 #endif /* USDT2 */

  2254   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);

  2255   JavaValue jvalue(T_VOID);

  2256   JNI_ArgumentPusherArray ap(methodID, args);

  2257   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);

  2258 JNI_END

  2261 #ifndef USDT2

  2262 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \

  2263 \

  2264   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\

  2265   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\

  2266   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\

  2267 \

  2268 JNI_ENTRY(ResultType, \

  2269           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \

  2270   JNIWrapper("CallStatic" XSTR(Result) "Method"); \

  2271 \

  2272   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\

  2273   ResultType ret = 0;\

  2274   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \

  2275                      (const ResultType&)ret);\

  2276 \

  2277   va_list args; \

  2278   va_start(args, methodID); \

  2279   JavaValue jvalue(Tag); \

  2280   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2281   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2282   va_end(args); \

  2283   ret = jvalue.get_##ResultType(); \

  2284   return ret;\

  2285 JNI_END \

  2286 \

  2287 JNI_ENTRY(ResultType, \

  2288           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \

  2289   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \

  2290   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\

  2291   ResultType ret = 0;\

  2292   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \

  2293                      (const ResultType&)ret);\

  2294 \

  2295   JavaValue jvalue(Tag); \

  2296   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2297   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2298   ret = jvalue.get_##ResultType(); \

  2299   return ret;\

  2300 JNI_END \

  2301 \

  2302 JNI_ENTRY(ResultType, \

  2303           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \

  2304   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \

  2305   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\

  2306   ResultType ret = 0;\

  2307   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \

  2308                      (const ResultType&)ret);\

  2309 \

  2310   JavaValue jvalue(Tag); \

  2311   JNI_ArgumentPusherArray ap(methodID, args); \

  2312   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2313   ret = jvalue.get_##ResultType(); \

  2314   return ret;\

  2315 JNI_END

  2317 // the runtime type of subword integral basic types is integer

  2318 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)

  2319 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE)

  2320 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR)

  2321 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT)

  2323 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT)

  2324 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT)

  2325 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG)

  2326 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT)

  2327 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE)

  2330 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);

  2331 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);

  2332 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);

  2334 #else /* USDT2 */

  2336 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \

  2337                                 , EntryProbe, ResultProbe) \

  2338 \

  2339   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \

  2340                           , ResultProbe);                               \

  2341 \

  2342 JNI_ENTRY(ResultType, \

  2343           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \

  2344   JNIWrapper("CallStatic" XSTR(Result) "Method"); \

  2345 \

  2346   EntryProbe; \

  2347   ResultType ret = 0;\

  2348   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \

  2349                      (const ResultType&)ret);\

  2350 \

  2351   va_list args; \

  2352   va_start(args, methodID); \

  2353   JavaValue jvalue(Tag); \

  2354   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2355   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2356   va_end(args); \

  2357   ret = jvalue.get_##ResultType(); \

  2358   return ret;\

  2359 JNI_END

  2361 // the runtime type of subword integral basic types is integer

  2362 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN

  2363                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2364                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));

  2365 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE

  2366                         , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2367                         HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));

  2368 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR

  2369                         , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2370                         HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));

  2371 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT

  2372                         , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2373                         HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));

  2375 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT

  2376                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2377                         HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));

  2378 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT

  2379                         , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2380                         HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));

  2381 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG

  2382                         , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2383                         HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));

  2384 // Float and double probes don't return value because dtrace doesn't currently support it

  2385 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT

  2386                         , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2387                         HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());

  2388 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE

  2389                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2390                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());

  2392 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \

  2393                                 , EntryProbe, ResultProbe) \

  2394 \

  2395   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \

  2396                           , ResultProbe);                               \

  2397 \

  2398 JNI_ENTRY(ResultType, \

  2399           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \

  2400   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \

  2401 \

  2402   EntryProbe; \

  2403   ResultType ret = 0;\

  2404   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \

  2405                      (const ResultType&)ret);\

  2406 \

  2407   JavaValue jvalue(Tag); \

  2408   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2409   /* Make sure class is initialized before trying to invoke its method */ \

  2410   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \

  2411   k()->initialize(CHECK_0); \

  2412   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2413   va_end(args); \

  2414   ret = jvalue.get_##ResultType(); \

  2415   return ret;\

  2416 JNI_END

  2418 // the runtime type of subword integral basic types is integer

  2419 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN

  2420                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2421                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));

  2422 DEFINE_CALLSTATICMETHODV(jbyte,    Byte,    T_BYTE

  2423                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2424                         HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));

  2425 DEFINE_CALLSTATICMETHODV(jchar,    Char,    T_CHAR

  2426                         , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2427                         HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));

  2428 DEFINE_CALLSTATICMETHODV(jshort,   Short,   T_SHORT

  2429                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2430                         HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));

  2432 DEFINE_CALLSTATICMETHODV(jobject,  Object,  T_OBJECT

  2433                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2434                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));

  2435 DEFINE_CALLSTATICMETHODV(jint,     Int,     T_INT

  2436                         , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2437                         HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));

  2438 DEFINE_CALLSTATICMETHODV(jlong,    Long,    T_LONG

  2439                         , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2440                         HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));

  2441 // Float and double probes don't return value because dtrace doesn't currently support it

  2442 DEFINE_CALLSTATICMETHODV(jfloat,   Float,   T_FLOAT

  2443                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2444                         HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());

  2445 DEFINE_CALLSTATICMETHODV(jdouble,  Double,  T_DOUBLE

  2446                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2447                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());

  2449 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \

  2450                                 , EntryProbe, ResultProbe) \

  2451 \

  2452   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \

  2453                           , ResultProbe);                               \

  2454 \

  2455 JNI_ENTRY(ResultType, \

  2456           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \

  2457   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \

  2458 \

  2459   EntryProbe; \

  2460   ResultType ret = 0;\

  2461   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \

  2462                      (const ResultType&)ret);\

  2463 \

  2464   JavaValue jvalue(Tag); \

  2465   JNI_ArgumentPusherArray ap(methodID, args); \

  2466   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2467   ret = jvalue.get_##ResultType(); \

  2468   return ret;\

  2469 JNI_END

  2471 // the runtime type of subword integral basic types is integer

  2472 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN

  2473                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2474                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));

  2475 DEFINE_CALLSTATICMETHODA(jbyte,    Byte,    T_BYTE

  2476                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2477                         HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));

  2478 DEFINE_CALLSTATICMETHODA(jchar,    Char,    T_CHAR

  2479                         , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2480                         HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));

  2481 DEFINE_CALLSTATICMETHODA(jshort,   Short,   T_SHORT

  2482                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2483                         HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));

  2485 DEFINE_CALLSTATICMETHODA(jobject,  Object,  T_OBJECT

  2486                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2487                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));

  2488 DEFINE_CALLSTATICMETHODA(jint,     Int,     T_INT

  2489                         , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2490                         HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));

  2491 DEFINE_CALLSTATICMETHODA(jlong,    Long,    T_LONG

  2492                         , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2493                         HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));

  2494 // Float and double probes don't return value because dtrace doesn't currently support it

  2495 DEFINE_CALLSTATICMETHODA(jfloat,   Float,   T_FLOAT

  2496                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2497                         HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());

  2498 DEFINE_CALLSTATICMETHODA(jdouble,  Double,  T_DOUBLE

  2499                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2500                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());

  2502 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod

  2503                          , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());

  2504 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV

  2505                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());

  2506 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA

  2507                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());

  2508 #endif /* USDT2 */

  2510 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))

  2511   JNIWrapper("CallStaticVoidMethod");

  2512 #ifndef USDT2

  2513   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);

  2514 #else /* USDT2 */

  2515   HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(

  2516                                          env, cls, (uintptr_t) methodID);

  2517 #endif /* USDT2 */

  2518   DT_VOID_RETURN_MARK(CallStaticVoidMethod);

  2520   va_list args;

  2521   va_start(args, methodID);

  2522   JavaValue jvalue(T_VOID);

  2523   JNI_ArgumentPusherVaArg ap(methodID, args);

  2524   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);

  2525   va_end(args);

  2526 JNI_END

  2529 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))

  2530   JNIWrapper("CallStaticVoidMethodV");

  2531 #ifndef USDT2

  2532   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);

  2533 #else /* USDT2 */

  2534   HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(

  2535                                           env, cls, (uintptr_t) methodID);

  2536 #endif /* USDT2 */

  2537   DT_VOID_RETURN_MARK(CallStaticVoidMethodV);

  2539   JavaValue jvalue(T_VOID);

  2540   JNI_ArgumentPusherVaArg ap(methodID, args);

  2541   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);

  2542 JNI_END

  2545 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))

  2546   JNIWrapper("CallStaticVoidMethodA");

  2547 #ifndef USDT2

  2548   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);

  2549 #else /* USDT2 */

  2550   HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(

  2551                                           env, cls, (uintptr_t) methodID);

  2552 #endif /* USDT2 */

  2553   DT_VOID_RETURN_MARK(CallStaticVoidMethodA);

  2555   JavaValue jvalue(T_VOID);

  2556   JNI_ArgumentPusherArray ap(methodID, args);

  2557   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);

  2558 JNI_END

  2561 //

  2562 // Accessing Fields

  2563 //

  2566 #ifndef USDT2

  2567 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);

  2568 #else /* USDT2 */

  2569 DT_RETURN_MARK_DECL(GetFieldID, jfieldID

  2570                     , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));

  2571 #endif /* USDT2 */

  2573 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,

  2574           const char *name, const char *sig))

  2575   JNIWrapper("GetFieldID");

  2576 #ifndef USDT2

  2577   DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);

  2578 #else /* USDT2 */

  2579   HOTSPOT_JNI_GETFIELDID_ENTRY(

  2580                                env, clazz, (char *) name, (char *) sig);

  2581 #endif /* USDT2 */

  2582   jfieldID ret = 0;

  2583   DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);

  2585   // The class should have been loaded (we have an instance of the class

  2586   // passed in) so the field and signature should already be in the symbol

  2587   // table.  If they're not there, the field doesn't exist.

  2588   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));

  2589   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));

  2590   if (fieldname == NULL || signame == NULL) {

  2591     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2592   }

  2593   KlassHandle k(THREAD,

  2594                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  2595   // Make sure class is initialized before handing id's out to fields

  2596   k()->initialize(CHECK_NULL);

  2598   fieldDescriptor fd;

  2599   if (!k()->oop_is_instance() ||

  2600       !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {

  2601     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2602   }

  2604   // A jfieldID for a non-static field is simply the offset of the field within the instanceOop

  2605   // It may also have hash bits for k, if VerifyJNIFields is turned on.

  2606   ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());

  2607   return ret;

  2608 JNI_END

  2611 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))

  2612   JNIWrapper("GetObjectField");

  2613 #ifndef USDT2

  2614   DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);

  2615 #else /* USDT2 */

  2616   HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(

  2617                                    env, obj, (uintptr_t) fieldID);

  2618 #endif /* USDT2 */

  2619   oop o = JNIHandles::resolve_non_null(obj);

  2620   Klass* k = o->klass();

  2621   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);

  2622   // Keep JVMTI addition small and only check enabled flag here.

  2623   // jni_GetField_probe() assumes that is okay to create handles.

  2624   if (JvmtiExport::should_post_field_access()) {

  2625     o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);

  2626   }

  2627   jobject ret = JNIHandles::make_local(env, o->obj_field(offset));

  2628 #if INCLUDE_ALL_GCS

  2629   // If G1 is enabled and we are accessing the value of the referent

  2630   // field in a reference object then we need to register a non-null

  2631   // referent with the SATB barrier.

  2632   if (UseG1GC) {

  2633     bool needs_barrier = false;

  2635     if (ret != NULL &&

  2636         offset == java_lang_ref_Reference::referent_offset &&

  2637         InstanceKlass::cast(k)->reference_type() != REF_NONE) {

  2638       assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");

  2639       needs_barrier = true;

  2640     }

  2642     if (needs_barrier) {

  2643       oop referent = JNIHandles::resolve(ret);

  2644       G1SATBCardTableModRefBS::enqueue(referent);

  2645     }

  2646   }

  2647 #endif // INCLUDE_ALL_GCS

  2648 #ifndef USDT2

  2649   DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);

  2650 #else /* USDT2 */

  2651 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(

  2652                                   ret);

  2653 #endif /* USDT2 */

  2654   return ret;

  2655 JNI_END

  2658 #ifndef USDT2

  2659 #define DEFINE_GETFIELD(Return,Fieldname,Result) \

  2660 \

  2661   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\

  2662 \

  2663 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \

  2664   JNIWrapper("Get" XSTR(Result) "Field"); \

  2665 \

  2666   DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\

  2667   Return ret = 0;\

  2668   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\

  2669 \

  2670   oop o = JNIHandles::resolve_non_null(obj); \

  2671   Klass* k = o->klass(); \

  2672   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2673   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2674   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \

  2675   /* and creates a ResetNoHandleMark.                                   */ \

  2676   if (JvmtiExport::should_post_field_access()) { \

  2677     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \

  2678   } \

  2679   ret = o->Fieldname##_field(offset); \

  2680   return ret; \

  2681 JNI_END

  2683 DEFINE_GETFIELD(jboolean, bool,   Boolean)

  2684 DEFINE_GETFIELD(jbyte,    byte,   Byte)

  2685 DEFINE_GETFIELD(jchar,    char,   Char)

  2686 DEFINE_GETFIELD(jshort,   short,  Short)

  2687 DEFINE_GETFIELD(jint,     int,    Int)

  2688 DEFINE_GETFIELD(jlong,    long,   Long)

  2689 DEFINE_GETFIELD(jfloat,   float,  Float)

  2690 DEFINE_GETFIELD(jdouble,  double, Double)

  2692 #else /* USDT2 */

  2694 #define DEFINE_GETFIELD(Return,Fieldname,Result \

  2695   , EntryProbe, ReturnProbe) \

  2696 \

  2697   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \

  2698   , ReturnProbe); \

  2699 \

  2700 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \

  2701   JNIWrapper("Get" XSTR(Result) "Field"); \

  2702 \

  2703   EntryProbe; \

  2704   Return ret = 0;\

  2705   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\

  2706 \

  2707   oop o = JNIHandles::resolve_non_null(obj); \

  2708   Klass* k = o->klass(); \

  2709   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2710   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2711   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \

  2712   /* and creates a ResetNoHandleMark.                                   */ \

  2713   if (JvmtiExport::should_post_field_access()) { \

  2714     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \

  2715   } \

  2716   ret = o->Fieldname##_field(offset); \

  2717   return ret; \

  2718 JNI_END

  2720 DEFINE_GETFIELD(jboolean, bool,   Boolean

  2721                 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2722                 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))

  2723 DEFINE_GETFIELD(jbyte,    byte,   Byte

  2724                 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2725                 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))

  2726 DEFINE_GETFIELD(jchar,    char,   Char

  2727                 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2728                 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))

  2729 DEFINE_GETFIELD(jshort,   short,  Short

  2730                 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2731                 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))

  2732 DEFINE_GETFIELD(jint,     int,    Int

  2733                 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2734                 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))

  2735 DEFINE_GETFIELD(jlong,    long,   Long

  2736                 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2737                 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))

  2738 // Float and double probes don't return value because dtrace doesn't currently support it

  2739 DEFINE_GETFIELD(jfloat,   float,  Float

  2740                 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2741                 HOTSPOT_JNI_GETFLOATFIELD_RETURN())

  2742 DEFINE_GETFIELD(jdouble,  double, Double

  2743                 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2744                 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())

  2745 #endif /* USDT2 */

  2747 address jni_GetBooleanField_addr() {

  2748   return (address)jni_GetBooleanField;

  2749 }

  2750 address jni_GetByteField_addr() {

  2751   return (address)jni_GetByteField;

  2752 }

  2753 address jni_GetCharField_addr() {

  2754   return (address)jni_GetCharField;

  2755 }

  2756 address jni_GetShortField_addr() {

  2757   return (address)jni_GetShortField;

  2758 }

  2759 address jni_GetIntField_addr() {

  2760   return (address)jni_GetIntField;

  2761 }

  2762 address jni_GetLongField_addr() {

  2763   return (address)jni_GetLongField;

  2764 }

  2765 address jni_GetFloatField_addr() {

  2766   return (address)jni_GetFloatField;

  2767 }

  2768 address jni_GetDoubleField_addr() {

  2769   return (address)jni_GetDoubleField;

  2770 }

  2772 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))

  2773   JNIWrapper("SetObjectField");

  2774 #ifndef USDT2

  2775   DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);

  2776 #else /* USDT2 */

  2777   HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(

  2778                                    env, obj, (uintptr_t) fieldID, value);

  2779 #endif /* USDT2 */

  2780   oop o = JNIHandles::resolve_non_null(obj);

  2781   Klass* k = o->klass();

  2782   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);

  2783   // Keep JVMTI addition small and only check enabled flag here.

  2784   // jni_SetField_probe_nh() assumes that is not okay to create handles

  2785   // and creates a ResetNoHandleMark.

  2786   if (JvmtiExport::should_post_field_modification()) {

  2787     jvalue field_value;

  2788     field_value.l = value;

  2789     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);

  2790   }

  2791   o->obj_field_put(offset, JNIHandles::resolve(value));

  2792 #ifndef USDT2

  2793   DTRACE_PROBE(hotspot_jni, SetObjectField__return);

  2794 #else /* USDT2 */

  2795   HOTSPOT_JNI_SETOBJECTFIELD_RETURN(

  2796 );

  2797 #endif /* USDT2 */

  2798 JNI_END

  2800 #ifndef USDT2

  2801 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \

  2802 \

  2803 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \

  2804   JNIWrapper("Set" XSTR(Result) "Field"); \

  2805 \

  2806   FP_SELECT_##Result( \

  2807     DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \

  2808     DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \

  2809 \

  2810   oop o = JNIHandles::resolve_non_null(obj); \

  2811   Klass* k = o->klass(); \

  2812   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2813   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2814   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \

  2815   /* and creates a ResetNoHandleMark.                                   */ \

  2816   if (JvmtiExport::should_post_field_modification()) { \

  2817     jvalue field_value; \

  2818     field_value.unionType = value; \

  2819     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \

  2820   } \

  2821   o->Fieldname##_field_put(offset, value); \

  2822   DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\

  2823 JNI_END

  2825 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z)

  2826 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b)

  2827 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c)

  2828 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s)

  2829 DEFINE_SETFIELD(jint,     int,    Int,     'I', i)

  2830 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j)

  2831 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f)

  2832 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d)

  2834 #else /* USDT2 */

  2836 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \

  2837                         , EntryProbe, ReturnProbe) \

  2838 \

  2839 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \

  2840   JNIWrapper("Set" XSTR(Result) "Field"); \

  2841 \

  2842   EntryProbe; \

  2843 \

  2844   oop o = JNIHandles::resolve_non_null(obj); \

  2845   Klass* k = o->klass(); \

  2846   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2847   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2848   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \

  2849   /* and creates a ResetNoHandleMark.                                   */ \

  2850   if (JvmtiExport::should_post_field_modification()) { \

  2851     jvalue field_value; \

  2852     field_value.unionType = value; \

  2853     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \

  2854   } \

  2855   if (SigType == 'Z') { value = ((jboolean)value) & 1; } \

  2856   o->Fieldname##_field_put(offset, value); \

  2857   ReturnProbe; \

  2858 JNI_END

  2860 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z

  2861                 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2862                 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())

  2863 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b

  2864                 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2865                 HOTSPOT_JNI_SETBYTEFIELD_RETURN())

  2866 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c

  2867                 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2868                 HOTSPOT_JNI_SETCHARFIELD_RETURN())

  2869 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s

  2870                 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2871                 HOTSPOT_JNI_SETSHORTFIELD_RETURN())

  2872 DEFINE_SETFIELD(jint,     int,    Int,     'I', i

  2873                 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2874                 HOTSPOT_JNI_SETINTFIELD_RETURN())

  2875 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j

  2876                 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2877                 HOTSPOT_JNI_SETLONGFIELD_RETURN())

  2878 // Float and double probes don't return value because dtrace doesn't currently support it

  2879 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f

  2880                 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2881                 HOTSPOT_JNI_SETFLOATFIELD_RETURN())

  2882 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d

  2883                 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2884                 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())

  2885 #endif /* USDT2 */

  2887 #ifndef USDT2

  2888 DT_RETURN_MARK_DECL(ToReflectedField, jobject);

  2889 #else /* USDT2 */

  2890 DT_RETURN_MARK_DECL(ToReflectedField, jobject

  2891                     , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));

  2892 #endif /* USDT2 */

  2894 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))

  2895   JNIWrapper("ToReflectedField");

  2896 #ifndef USDT2

  2897   DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,

  2898                 env, cls, fieldID, isStatic);

  2899 #else /* USDT2 */

  2900   HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(

  2901                 env, cls, (uintptr_t) fieldID, isStatic);

  2902 #endif /* USDT2 */

  2903   jobject ret = NULL;

  2904   DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);

  2906   fieldDescriptor fd;

  2907   bool found = false;

  2908   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));

  2910   assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");

  2912   if (isStatic) {

  2913     // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.

  2914     JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);

  2915     assert(id->is_static_field_id(), "invalid static field id");

  2916     found = id->find_local_field(&fd);

  2917   } else {

  2918     // Non-static field. The fieldID is really the offset of the field within the instanceOop.

  2919     int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);

  2920     found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);

  2921   }

  2922   assert(found, "bad fieldID passed into jni_ToReflectedField");

  2923   oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);

  2924   ret = JNIHandles::make_local(env, reflected);

  2925   return ret;

  2926 JNI_END

  2929 //

  2930 // Accessing Static Fields

  2931 //

  2932 #ifndef USDT2

  2933 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);

  2934 #else /* USDT2 */

  2935 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID

  2936                     , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));

  2937 #endif /* USDT2 */

  2939 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,

  2940           const char *name, const char *sig))

  2941   JNIWrapper("GetStaticFieldID");

  2942 #ifndef USDT2

  2943   DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);

  2944 #else /* USDT2 */

  2945   HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(

  2946                                      env, clazz, (char *) name, (char *) sig);

  2947 #endif /* USDT2 */

  2948   jfieldID ret = NULL;

  2949   DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);

  2951   // The class should have been loaded (we have an instance of the class

  2952   // passed in) so the field and signature should already be in the symbol

  2953   // table.  If they're not there, the field doesn't exist.

  2954   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));

  2955   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));

  2956   if (fieldname == NULL || signame == NULL) {

  2957     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2958   }

  2959   KlassHandle k(THREAD,

  2960                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  2961   // Make sure class is initialized before handing id's out to static fields

  2962   k()->initialize(CHECK_NULL);

  2964   fieldDescriptor fd;

  2965   if (!k()->oop_is_instance() ||

  2966       !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {

  2967     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2968   }

  2970   // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*

  2971   JNIid* id = fd.field_holder()->jni_id_for(fd.offset());

  2972   debug_only(id->set_is_static_field_id();)

  2974   debug_only(id->verify(fd.field_holder()));

  2976   ret = jfieldIDWorkaround::to_static_jfieldID(id);

  2977   return ret;

  2978 JNI_END

  2981 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))

  2982   JNIWrapper("GetStaticObjectField");

  2983 #ifndef USDT2

  2984   DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);

  2985 #else /* USDT2 */

  2986   HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(

  2987                                          env, clazz, (uintptr_t) fieldID);

  2988 #endif /* USDT2 */

  2989 #if INCLUDE_JNI_CHECK

  2990   DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)

  2991 #endif // INCLUDE_JNI_CHECK

  2992   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);

  2993   assert(id->is_static_field_id(), "invalid static field id");

  2994   // Keep JVMTI addition small and only check enabled flag here.

  2995   // jni_GetField_probe() assumes that is okay to create handles.

  2996   if (JvmtiExport::should_post_field_access()) {

  2997     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);

  2998   }

  2999   jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));

  3000 #ifndef USDT2

  3001   DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);

  3002 #else /* USDT2 */

  3003   HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(

  3004                                           ret);

  3005 #endif /* USDT2 */

  3006   return ret;

  3007 JNI_END

  3009 #ifndef USDT2

  3010 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \

  3011 \

  3012   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\

  3013 \

  3014 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \

  3015   JNIWrapper("GetStatic" XSTR(Result) "Field"); \

  3016   DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\

  3017   Return ret = 0;\

  3018   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \

  3019                      (const Return&)ret);\

  3020   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3021   assert(id->is_static_field_id(), "invalid static field id"); \

  3022   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3023   /* jni_GetField_probe() assumes that is okay to create handles. */ \

  3024   if (JvmtiExport::should_post_field_access()) { \

  3025     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \

  3026   } \

  3027   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \

  3028   return ret;\

  3029 JNI_END

  3031 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean)

  3032 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte)

  3033 DEFINE_GETSTATICFIELD(jchar,    char,   Char)

  3034 DEFINE_GETSTATICFIELD(jshort,   short,  Short)

  3035 DEFINE_GETSTATICFIELD(jint,     int,    Int)

  3036 DEFINE_GETSTATICFIELD(jlong,    long,   Long)

  3037 DEFINE_GETSTATICFIELD(jfloat,   float,  Float)

  3038 DEFINE_GETSTATICFIELD(jdouble,  double, Double)

  3040 #else /* USDT2 */

  3042 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \

  3043                               , EntryProbe, ReturnProbe) \

  3044 \

  3045   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \

  3046                           , ReturnProbe);                                          \

  3047 \

  3048 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \

  3049   JNIWrapper("GetStatic" XSTR(Result) "Field"); \

  3050   EntryProbe; \

  3051   Return ret = 0;\

  3052   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \

  3053                      (const Return&)ret);\

  3054   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3055   assert(id->is_static_field_id(), "invalid static field id"); \

  3056   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3057   /* jni_GetField_probe() assumes that is okay to create handles. */ \

  3058   if (JvmtiExport::should_post_field_access()) { \

  3059     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \

  3060   } \

  3061   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \

  3062   return ret;\

  3063 JNI_END

  3065 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean

  3066                       , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))

  3067 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte

  3068                       , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref)   )

  3069 DEFINE_GETSTATICFIELD(jchar,    char,   Char

  3070                       , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref)   )

  3071 DEFINE_GETSTATICFIELD(jshort,   short,  Short

  3072                       , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref)  )

  3073 DEFINE_GETSTATICFIELD(jint,     int,    Int

  3074                       , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),     HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref)    )

  3075 DEFINE_GETSTATICFIELD(jlong,    long,   Long

  3076                       , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref)   )

  3077 // Float and double probes don't return value because dtrace doesn't currently support it

  3078 DEFINE_GETSTATICFIELD(jfloat,   float,  Float

  3079                       , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN()          )

  3080 DEFINE_GETSTATICFIELD(jdouble,  double, Double

  3081                       , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),  HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN()         )

  3082 #endif /* USDT2 */

  3084 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))

  3085   JNIWrapper("SetStaticObjectField");

  3086 #ifndef USDT2

  3087   DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);

  3088 #else /* USDT2 */

  3089  HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(

  3090                                         env, clazz, (uintptr_t) fieldID, value);

  3091 #endif /* USDT2 */

  3092   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);

  3093   assert(id->is_static_field_id(), "invalid static field id");

  3094   // Keep JVMTI addition small and only check enabled flag here.

  3095   // jni_SetField_probe() assumes that is okay to create handles.

  3096   if (JvmtiExport::should_post_field_modification()) {

  3097     jvalue field_value;

  3098     field_value.l = value;

  3099     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);

  3100   }

  3101   id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));

  3102 #ifndef USDT2

  3103   DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);

  3104 #else /* USDT2 */

  3105   HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(

  3106                                           );

  3107 #endif /* USDT2 */

  3108 JNI_END

  3111 #ifndef USDT2

  3112 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \

  3113 \

  3114 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \

  3115   JNIWrapper("SetStatic" XSTR(Result) "Field"); \

  3116   FP_SELECT_##Result( \

  3117      DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \

  3118      DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \

  3119 \

  3120   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3121   assert(id->is_static_field_id(), "invalid static field id"); \

  3122   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3123   /* jni_SetField_probe() assumes that is okay to create handles. */ \

  3124   if (JvmtiExport::should_post_field_modification()) { \

  3125     jvalue field_value; \

  3126     field_value.unionType = value; \

  3127     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \

  3128   } \

  3129   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \

  3130   DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\

  3131 JNI_END

  3133 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z)

  3134 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b)

  3135 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c)

  3136 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s)

  3137 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i)

  3138 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j)

  3139 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f)

  3140 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d)

  3142 #else /* USDT2 */

  3144 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \

  3145                               , EntryProbe, ReturnProbe) \

  3146 \

  3147 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \

  3148   JNIWrapper("SetStatic" XSTR(Result) "Field"); \

  3149   EntryProbe; \

  3150 \

  3151   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3152   assert(id->is_static_field_id(), "invalid static field id"); \

  3153   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3154   /* jni_SetField_probe() assumes that is okay to create handles. */ \

  3155   if (JvmtiExport::should_post_field_modification()) { \

  3156     jvalue field_value; \

  3157     field_value.unionType = value; \

  3158     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \

  3159   } \

  3160   if (SigType == 'Z') { value = ((jboolean)value) & 1; } \

  3161   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \

  3162   ReturnProbe;\

  3163 JNI_END

  3165 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z

  3166                       , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),

  3167                       HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())

  3168 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b

  3169                       , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3170                       HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())

  3171 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c

  3172                       , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3173                       HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())

  3174 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s

  3175                       , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3176                       HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())

  3177 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i

  3178                       , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3179                       HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())

  3180 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j

  3181                       , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3182                       HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())

  3183 // Float and double probes don't return value because dtrace doesn't currently support it

  3184 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f

  3185                       , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),

  3186                       HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())

  3187 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d

  3188                       , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),

  3189                       HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())

  3190 #endif /* USDT2 */

  3192 //

  3193 // String Operations

  3194 //

  3196 // Unicode Interface

  3198 #ifndef USDT2

  3199 DT_RETURN_MARK_DECL(NewString, jstring);

  3200 #else /* USDT2 */

  3201 DT_RETURN_MARK_DECL(NewString, jstring

  3202                     , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));

  3203 #endif /* USDT2 */

  3205 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))

  3206   JNIWrapper("NewString");

  3207 #ifndef USDT2

  3208   DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);

  3209 #else /* USDT2 */

  3210  HOTSPOT_JNI_NEWSTRING_ENTRY(

  3211                              env, (uint16_t *) unicodeChars, len);

  3212 #endif /* USDT2 */

  3213   jstring ret = NULL;

  3214   DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);

  3215   oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);

  3216   ret = (jstring) JNIHandles::make_local(env, string);

  3217   return ret;

  3218 JNI_END

  3221 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))

  3222   JNIWrapper("GetStringLength");

  3223 #ifndef USDT2

  3224   DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);

  3225 #else /* USDT2 */

  3226   HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(

  3227                                     env, string);

  3228 #endif /* USDT2 */

  3229   jsize ret = 0;

  3230   oop s = JNIHandles::resolve_non_null(string);

  3231   if (java_lang_String::value(s) != NULL) {

  3232     ret = java_lang_String::length(s);

  3233   }

  3234 #ifndef USDT2

  3235   DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);

  3236 #else /* USDT2 */

  3237  HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(

  3238                                     ret);

  3239 #endif /* USDT2 */

  3240   return ret;

  3241 JNI_END

  3244 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(

  3245   JNIEnv *env, jstring string, jboolean *isCopy))

  3246   JNIWrapper("GetStringChars");

  3247 #ifndef USDT2

  3248   DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);

  3249 #else /* USDT2 */

  3250  HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(

  3251                                   env, string, (uintptr_t *) isCopy);

  3252 #endif /* USDT2 */

  3253   jchar* buf = NULL;

  3254   oop s = JNIHandles::resolve_non_null(string);

  3255   typeArrayOop s_value = java_lang_String::value(s);

  3256   if (s_value != NULL) {

  3257     int s_len = java_lang_String::length(s);

  3258     int s_offset = java_lang_String::offset(s);

  3259     buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal);  // add one for zero termination

  3260     /* JNI Specification states return NULL on OOM */

  3261     if (buf != NULL) {

  3262       if (s_len > 0) {

  3263         memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);

  3264       }

  3265       buf[s_len] = 0;

  3266       //%note jni_5

  3267       if (isCopy != NULL) {

  3268         *isCopy = JNI_TRUE;

  3269       }

  3270     }

  3271   }

  3272 #ifndef USDT2

  3273   DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);

  3274 #else /* USDT2 */

  3275   HOTSPOT_JNI_GETSTRINGCHARS_RETURN(

  3276                                     buf);

  3277 #endif /* USDT2 */

  3278   return buf;

  3279 JNI_END

  3282 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))

  3283   JNIWrapper("ReleaseStringChars");

  3284 #ifndef USDT2

  3285   DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);

  3286 #else /* USDT2 */

  3287   HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(

  3288                                        env, str, (uint16_t *) chars);

  3289 #endif /* USDT2 */

  3290   //%note jni_6

  3291   if (chars != NULL) {

  3292     // Since String objects are supposed to be immutable, don't copy any

  3293     // new data back.  A bad user will have to go after the char array.

  3294     FreeHeap((void*) chars);

  3295   }

  3296 #ifndef USDT2

  3297   DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);

  3298 #else /* USDT2 */

  3299   HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(

  3300 );

  3301 #endif /* USDT2 */

  3302 JNI_END

  3305 // UTF Interface

  3307 #ifndef USDT2

  3308 DT_RETURN_MARK_DECL(NewStringUTF, jstring);

  3309 #else /* USDT2 */

  3310 DT_RETURN_MARK_DECL(NewStringUTF, jstring

  3311                     , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));

  3312 #endif /* USDT2 */

  3314 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))

  3315   JNIWrapper("NewStringUTF");

  3316 #ifndef USDT2

  3317   DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);

  3318 #else /* USDT2 */

  3319   HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(

  3320                                  env, (char *) bytes);

  3321 #endif /* USDT2 */

  3322   jstring ret;

  3323   DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);

  3325   oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);

  3326   ret = (jstring) JNIHandles::make_local(env, result);

  3327   return ret;

  3328 JNI_END

  3331 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))

  3332   JNIWrapper("GetStringUTFLength");

  3333 #ifndef USDT2

  3334   DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);

  3335 #else /* USDT2 */

  3336  HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(

  3337                                       env, string);

  3338 #endif /* USDT2 */

  3339   jsize ret = 0;

  3340   oop java_string = JNIHandles::resolve_non_null(string);

  3341   if (java_lang_String::value(java_string) != NULL) {

  3342     ret = java_lang_String::utf8_length(java_string);

  3343   }

  3344 #ifndef USDT2

  3345   DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);

  3346 #else /* USDT2 */

  3347   HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(

  3348                                         ret);

  3349 #endif /* USDT2 */

  3350   return ret;

  3351 JNI_END

  3354 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))

  3355   JNIWrapper("GetStringUTFChars");

  3356 #ifndef USDT2

  3357   DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);

  3358 #else /* USDT2 */

  3359  HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(

  3360                                      env, string, (uintptr_t *) isCopy);

  3361 #endif /* USDT2 */

  3362   char* result = NULL;

  3363   oop java_string = JNIHandles::resolve_non_null(string);

  3364   if (java_lang_String::value(java_string) != NULL) {

  3365     size_t length = java_lang_String::utf8_length(java_string);

  3366     /* JNI Specification states return NULL on OOM */

  3367     result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);

  3368     if (result != NULL) {

  3369       java_lang_String::as_utf8_string(java_string, result, (int) length + 1);

  3370       if (isCopy != NULL) {

  3371         *isCopy = JNI_TRUE;

  3372       }

  3373     }

  3374   }

  3375 #ifndef USDT2

  3376   DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);

  3377 #else /* USDT2 */

  3378  HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(

  3379                                       result);

  3380 #endif /* USDT2 */

  3381   return result;

  3382 JNI_END

  3385 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))

  3386   JNIWrapper("ReleaseStringUTFChars");

  3387 #ifndef USDT2

  3388   DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);

  3389 #else /* USDT2 */

  3390  HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(

  3391                                          env, str, (char *) chars);

  3392 #endif /* USDT2 */

  3393   if (chars != NULL) {

  3394     FreeHeap((char*) chars);

  3395   }

  3396 #ifndef USDT2

  3397   DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);

  3398 #else /* USDT2 */

  3399 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(

  3400 );

  3401 #endif /* USDT2 */

  3402 JNI_END

  3405 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))

  3406   JNIWrapper("GetArrayLength");

  3407 #ifndef USDT2

  3408   DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);

  3409 #else /* USDT2 */

  3410  HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(

  3411                                   env, array);

  3412 #endif /* USDT2 */

  3413   arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));

  3414   assert(a->is_array(), "must be array");

  3415   jsize ret = a->length();

  3416 #ifndef USDT2

  3417   DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);

  3418 #else /* USDT2 */

  3419  HOTSPOT_JNI_GETARRAYLENGTH_RETURN(

  3420                                    ret);

  3421 #endif /* USDT2 */

  3422   return ret;

  3423 JNI_END

  3426 //

  3427 // Object Array Operations

  3428 //

  3430 #ifndef USDT2

  3431 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);

  3432 #else /* USDT2 */

  3433 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray

  3434                     , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));

  3435 #endif /* USDT2 */

  3437 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))

  3438   JNIWrapper("NewObjectArray");

  3439 #ifndef USDT2

  3440   DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);

  3441 #else /* USDT2 */

  3442  HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(

  3443                                   env, length, elementClass, initialElement);

  3444 #endif /* USDT2 */

  3445   jobjectArray ret = NULL;

  3446   DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);

  3447   KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));

  3448   Klass* ako = ek()->array_klass(CHECK_NULL);

  3449   KlassHandle ak = KlassHandle(THREAD, ako);

  3450   ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);

  3451   objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);

  3452   oop initial_value = JNIHandles::resolve(initialElement);

  3453   if (initial_value != NULL) {  // array already initialized with NULL

  3454     for (int index = 0; index < length; index++) {

  3455       result->obj_at_put(index, initial_value);

  3456     }

  3457   }

  3458   ret = (jobjectArray) JNIHandles::make_local(env, result);

  3459   return ret;

  3460 JNI_END

  3462 #ifndef USDT2

  3463 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);

  3464 #else /* USDT2 */

  3465 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject

  3466                     , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));

  3467 #endif /* USDT2 */

  3469 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))

  3470   JNIWrapper("GetObjectArrayElement");

  3471 #ifndef USDT2

  3472   DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);

  3473 #else /* USDT2 */

  3474  HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(

  3475                                          env, array, index);

  3476 #endif /* USDT2 */

  3477   jobject ret = NULL;

  3478   DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);

  3479   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));

  3480   if (a->is_within_bounds(index)) {

  3481     ret = JNIHandles::make_local(env, a->obj_at(index));

  3482     return ret;

  3483   } else {

  3484     char buf[jintAsStringSize];

  3485     sprintf(buf, "%d", index);

  3486     THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);

  3487   }

  3488 JNI_END

  3490 #ifndef USDT2

  3491 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);

  3492 #else /* USDT2 */

  3493 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement

  3494                          , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());

  3495 #endif /* USDT2 */

  3497 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))

  3498   JNIWrapper("SetObjectArrayElement");

  3499 #ifndef USDT2

  3500   DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);

  3501 #else /* USDT2 */

  3502  HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(

  3503                                          env, array, index, value);

  3504 #endif /* USDT2 */

  3505   DT_VOID_RETURN_MARK(SetObjectArrayElement);

  3507   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));

  3508   oop v = JNIHandles::resolve(value);

  3509   if (a->is_within_bounds(index)) {

  3510     if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {

  3511       a->obj_at_put(index, v);

  3512     } else {

  3513       THROW(vmSymbols::java_lang_ArrayStoreException());

  3514     }

  3515   } else {

  3516     char buf[jintAsStringSize];

  3517     sprintf(buf, "%d", index);

  3518     THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);

  3519   }

  3520 JNI_END

  3523 #ifndef USDT2

  3524 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \

  3525 \

  3526   DT_RETURN_MARK_DECL(New##Result##Array, Return); \

  3527 \

  3528 JNI_ENTRY(Return, \

  3529           jni_New##Result##Array(JNIEnv *env, jsize len)) \

  3530   JNIWrapper("New" XSTR(Result) "Array"); \

  3531   DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\

  3532   Return ret = NULL;\

  3533   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\

  3534 \

  3535   oop obj= oopFactory::Allocator(len, CHECK_0); \

  3536   ret = (Return) JNIHandles::make_local(env, obj); \

  3537   return ret;\

  3538 JNI_END

  3540 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean)

  3541 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte)

  3542 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short)

  3543 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char)

  3544 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int)

  3545 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long)

  3546 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float)

  3547 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double)

  3549 #else /* USDT2 */

  3551 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \

  3552                               ,EntryProbe,ReturnProbe)  \

  3553 \

  3554   DT_RETURN_MARK_DECL(New##Result##Array, Return \

  3555                       , ReturnProbe); \

  3556 \

  3557 JNI_ENTRY(Return, \

  3558           jni_New##Result##Array(JNIEnv *env, jsize len)) \

  3559   JNIWrapper("New" XSTR(Result) "Array"); \

  3560   EntryProbe; \

  3561   Return ret = NULL;\

  3562   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\

  3563 \

  3564   oop obj= oopFactory::Allocator(len, CHECK_0); \

  3565   ret = (Return) JNIHandles::make_local(env, obj); \

  3566   return ret;\

  3567 JNI_END

  3569 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean,

  3570                       HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),

  3571                       HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))

  3572 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte,

  3573                       HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),

  3574                       HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))

  3575 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short,

  3576                       HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),

  3577                       HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))

  3578 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char,

  3579                       HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),

  3580                       HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))

  3581 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int,

  3582                       HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),

  3583                       HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))

  3584 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long,

  3585                       HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),

  3586                       HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))

  3587 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float,

  3588                       HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),

  3589                       HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))

  3590 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double,

  3591                       HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),

  3592                       HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))

  3593 #endif /* USDT2 */

  3595 // Return an address which will fault if the caller writes to it.

  3597 static char* get_bad_address() {

  3598   static char* bad_address = NULL;

  3599   if (bad_address == NULL) {

  3600     size_t size = os::vm_allocation_granularity();

  3601     bad_address = os::reserve_memory(size);

  3602     if (bad_address != NULL) {

  3603       os::protect_memory(bad_address, size, os::MEM_PROT_READ,

  3604                          /*is_committed*/false);

  3605       MemTracker::record_virtual_memory_type((void*)bad_address, mtInternal);

  3606     }

  3607   }

  3608   return bad_address;

  3609 }

  3612 #ifndef USDT2

  3613 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \

  3614 \

  3615 JNI_QUICK_ENTRY(ElementType*, \

  3616           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \

  3617   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \

  3618   DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\

  3619   /* allocate an chunk of memory in c land */ \

  3620   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3621   ElementType* result; \

  3622   int len = a->length(); \

  3623   if (len == 0) { \

  3624     /* Empty array: legal but useless, can't return NULL. \

  3625      * Return a pointer to something useless. \

  3626      * Avoid asserts in typeArrayOop. */ \

  3627     result = (ElementType*)get_bad_address(); \

  3628   } else { \

  3629     /* JNI Specification states return NULL on OOM */                    \

  3630     result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \

  3631     if (result != NULL) {                                                \

  3632       /* copy the array to the c chunk */                                \

  3633       memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len);      \

  3634       if (isCopy) {                                                      \

  3635         *isCopy = JNI_TRUE;                                              \

  3636       }                                                                  \

  3637     }                                                                    \

  3638   } \

  3639   DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\

  3640   return result; \

  3641 JNI_END

  3643 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)

  3644 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte)

  3645 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short)

  3646 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char)

  3647 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int)

  3648 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long)

  3649 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float)

  3650 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double)

  3652 #else /* USDT2 */

  3654 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \

  3655                                       , EntryProbe, ReturnProbe) \

  3656 \

  3657 JNI_QUICK_ENTRY(ElementType*, \

  3658           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \

  3659   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \

  3660   EntryProbe; \

  3661   /* allocate an chunk of memory in c land */ \

  3662   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3663   ElementType* result; \

  3664   int len = a->length(); \

  3665   if (len == 0) { \

  3666     /* Empty array: legal but useless, can't return NULL. \

  3667      * Return a pointer to something useless. \

  3668      * Avoid asserts in typeArrayOop. */ \

  3669     result = (ElementType*)get_bad_address(); \

  3670   } else { \

  3671     /* JNI Specification states return NULL on OOM */                    \

  3672     result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \

  3673     if (result != NULL) {                                                \

  3674       /* copy the array to the c chunk */                                \

  3675       memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len);      \

  3676       if (isCopy) {                                                      \

  3677         *isCopy = JNI_TRUE;                                              \

  3678       }                                                                  \

  3679     }                                                                    \

  3680   } \

  3681   ReturnProbe; \

  3682   return result; \

  3683 JNI_END

  3685 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool

  3686                               , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3687                               HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))

  3688 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte

  3689                               , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3690                               HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))

  3691 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short

  3692                               , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),

  3693                               HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))

  3694 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char

  3695                               , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),

  3696                               HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))

  3697 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int

  3698                               , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3699                               HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))

  3700 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long

  3701                               , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3702                               HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))

  3703 // Float and double probes don't return value because dtrace doesn't currently support it

  3704 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float

  3705                               , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3706                               HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))

  3707 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double

  3708                               , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3709                               HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))

  3710 #endif /* USDT2 */

  3712 #ifndef USDT2

  3713 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \

  3714 \

  3715 JNI_QUICK_ENTRY(void, \

  3716           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \

  3717                                              ElementType *buf, jint mode)) \

  3718   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \

  3719   DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\

  3720   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3721   int len = a->length(); \

  3722   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \

  3723     if ((mode == 0) || (mode == JNI_COMMIT)) { \

  3724       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \

  3725     } \

  3726     if ((mode == 0) || (mode == JNI_ABORT)) { \

  3727       FreeHeap(buf); \

  3728     } \

  3729   } \

  3730   DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\

  3731 JNI_END

  3733 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)

  3734 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte)

  3735 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short)

  3736 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char)

  3737 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int)

  3738 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long)

  3739 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float)

  3740 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double)

  3742 #else /* USDT2 */

  3744 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \

  3745                                           , EntryProbe, ReturnProbe);\

  3746 \

  3747 JNI_QUICK_ENTRY(void, \

  3748           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \

  3749                                              ElementType *buf, jint mode)) \

  3750   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \

  3751   EntryProbe; \

  3752   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3753   int len = a->length(); \

  3754   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \

  3755     if ((mode == 0) || (mode == JNI_COMMIT)) { \

  3756       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \

  3757     } \

  3758     if ((mode == 0) || (mode == JNI_ABORT)) { \

  3759       FreeHeap(buf); \

  3760     } \

  3761   } \

  3762   ReturnProbe; \

  3763 JNI_END

  3765 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool

  3766                                   , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),

  3767                                   HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())

  3768 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte

  3769                                   , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),

  3770                                   HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())

  3771 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short

  3772                                   ,  HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),

  3773                                   HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())

  3774 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char

  3775                                   ,  HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),

  3776                                   HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())

  3777 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int

  3778                                   , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),

  3779                                   HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())

  3780 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long

  3781                                   , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),

  3782                                   HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())

  3783 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float

  3784                                   , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),

  3785                                   HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())

  3786 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double

  3787                                   , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),

  3788                                   HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())

  3789 #endif /* USDT2 */

  3791 #ifndef USDT2

  3792 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \

  3793   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\

  3794 \

  3795 JNI_ENTRY(void, \

  3796 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3797              jsize len, ElementType *buf)) \

  3798   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \

  3799   DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\

  3800   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \

  3801   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3802   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \

  3803     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3804   } else { \

  3805     if (len > 0) { \

  3806       int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \

  3807       memcpy((u_char*) buf, \

  3808              (u_char*) src->Tag##_at_addr(start), \

  3809              len << sc);                          \

  3810     } \

  3811   } \

  3812 JNI_END

  3814 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)

  3815 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte)

  3816 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short)

  3817 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char)

  3818 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int)

  3819 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long)

  3820 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float)

  3821 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double)

  3823 #else /* USDT2 */

  3825 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \

  3826                                     , EntryProbe, ReturnProbe); \

  3827   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \

  3828                            , ReturnProbe); \

  3829 \

  3830 JNI_ENTRY(void, \

  3831 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3832              jsize len, ElementType *buf)) \

  3833   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \

  3834   EntryProbe; \

  3835   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \

  3836   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3837   if (start < 0 || len < 0 || (start > src->length() - len)) { \

  3838     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3839   } else { \

  3840     if (len > 0) { \

  3841       int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \

  3842       memcpy((u_char*) buf, \

  3843              (u_char*) src->Tag##_at_addr(start), \

  3844              len << sc);                          \

  3845     } \

  3846   } \

  3847 JNI_END

  3849 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool

  3850                             , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),

  3851                             HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());

  3852 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte

  3853                             ,  HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),

  3854                             HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());

  3855 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short

  3856                             , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),

  3857                             HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());

  3858 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char

  3859                             ,  HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),

  3860                             HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());

  3861 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int

  3862                             , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),

  3863                             HOTSPOT_JNI_GETINTARRAYREGION_RETURN());

  3864 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long

  3865                             ,  HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),

  3866                             HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());

  3867 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float

  3868                             , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),

  3869                             HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());

  3870 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double

  3871                             , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),

  3872                             HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());

  3873 #endif /* USDT2 */

  3875 #ifndef USDT2

  3876 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \

  3877   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\

  3878 \

  3879 JNI_ENTRY(void, \

  3880 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3881              jsize len, const ElementType *buf)) \

  3882   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \

  3883   DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\

  3884   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \

  3885   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3886   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \

  3887     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3888   } else { \

  3889     if (len > 0) { \

  3890       int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \

  3891       memcpy((u_char*) dst->Tag##_at_addr(start), \

  3892              (u_char*) buf, \

  3893              len << sc);    \

  3894     } \

  3895   } \

  3896 JNI_END

  3898 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)

  3899 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte)

  3900 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short)

  3901 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char)

  3902 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int)

  3903 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long)

  3904 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float)

  3905 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double)

  3907 #else /* USDT2 */

  3909 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \

  3910                                     , EntryProbe, ReturnProbe); \

  3911   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \

  3912                            ,ReturnProbe);           \

  3913 \

  3914 JNI_ENTRY(void, \

  3915 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3916              jsize len, const ElementType *buf)) \

  3917   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \

  3918   EntryProbe; \

  3919   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \

  3920   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3921   if (start < 0 || len < 0 || (start > dst->length() - len)) { \

  3922     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3923   } else { \

  3924     if (len > 0) { \

  3925       int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \

  3926       memcpy((u_char*) dst->Tag##_at_addr(start), \

  3927              (u_char*) buf, \

  3928              len << sc);    \

  3929     } \

  3930   } \

  3931 JNI_END

  3933 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool

  3934                             , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),

  3935                             HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())

  3936 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte

  3937                             , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),

  3938                             HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())

  3939 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short

  3940                             , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),

  3941                             HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())

  3942 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char

  3943                             , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),

  3944                             HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())

  3945 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int

  3946                             , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),

  3947                             HOTSPOT_JNI_SETINTARRAYREGION_RETURN())

  3948 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long

  3949                             , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),

  3950                             HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())

  3951 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float

  3952                             , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),

  3953                             HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())

  3954 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double

  3955                             , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),

  3956                             HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())

  3957 #endif /* USDT2 */

  3960 //

  3961 // Interception of natives

  3962 //

  3964 // The RegisterNatives call being attempted tried to register with a method that

  3965 // is not native.  Ask JVM TI what prefixes have been specified.  Then check

  3966 // to see if the native method is now wrapped with the prefixes.  See the

  3967 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.

  3968 static Method* find_prefixed_native(KlassHandle k,

  3969                                       Symbol* name, Symbol* signature, TRAPS) {

  3970 #if INCLUDE_JVMTI

  3971   ResourceMark rm(THREAD);

  3972   Method* method;

  3973   int name_len = name->utf8_length();

  3974   char* name_str = name->as_utf8();

  3975   int prefix_count;

  3976   char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);

  3977   for (int i = 0; i < prefix_count; i++) {

  3978     char* prefix = prefixes[i];

  3979     int prefix_len = (int)strlen(prefix);

  3981     // try adding this prefix to the method name and see if it matches another method name

  3982     int trial_len = name_len + prefix_len;

  3983     char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);

  3984     strcpy(trial_name_str, prefix);

  3985     strcat(trial_name_str, name_str);

  3986     TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);

  3987     if (trial_name == NULL) {

  3988       continue; // no such symbol, so this prefix wasn't used, try the next prefix

  3989     }

  3990     method = k()->lookup_method(trial_name, signature);

  3991     if (method == NULL) {

  3992       continue; // signature doesn't match, try the next prefix

  3993     }

  3994     if (method->is_native()) {

  3995       method->set_is_prefixed_native();

  3996       return method; // wahoo, we found a prefixed version of the method, return it

  3997     }

  3998     // found as non-native, so prefix is good, add it, probably just need more prefixes

  3999     name_len = trial_len;

  4000     name_str = trial_name_str;

  4001   }

  4002 #endif // INCLUDE_JVMTI

  4003   return NULL; // not found

  4004 }

  4006 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {

  4007   Method* method = k()->lookup_method(name, signature);

  4008   if (method == NULL) {

  4009     ResourceMark rm;

  4010     stringStream st;

  4011     st.print("Method %s name or signature does not match",

  4012              Method::name_and_sig_as_C_string(k(), name, signature));

  4013     THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);

  4014   }

  4015   if (!method->is_native()) {

  4016     // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)

  4017     method = find_prefixed_native(k, name, signature, THREAD);

  4018     if (method == NULL) {

  4019       ResourceMark rm;

  4020       stringStream st;

  4021       st.print("Method %s is not declared as native",

  4022                Method::name_and_sig_as_C_string(k(), name, signature));

  4023       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);

  4024     }

  4025   }

  4027   if (entry != NULL) {

  4028     method->set_native_function(entry,

  4029       Method::native_bind_event_is_interesting);

  4030   } else {

  4031     method->clear_native_function();

  4032   }

  4033   if (PrintJNIResolving) {

  4034     ResourceMark rm(THREAD);

  4035     tty->print_cr("[Registering JNI native method %s.%s]",

  4036       method->method_holder()->external_name(),

  4037       method->name()->as_C_string());

  4038   }

  4039   return true;

  4040 }

  4042 #ifndef USDT2

  4043 DT_RETURN_MARK_DECL(RegisterNatives, jint);

  4044 #else /* USDT2 */

  4045 DT_RETURN_MARK_DECL(RegisterNatives, jint

  4046                     , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));

  4047 #endif /* USDT2 */

  4049 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,

  4050                                     const JNINativeMethod *methods,

  4051                                     jint nMethods))

  4052   JNIWrapper("RegisterNatives");

  4053 #ifndef USDT2

  4054   DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);

  4055 #else /* USDT2 */

  4056   HOTSPOT_JNI_REGISTERNATIVES_ENTRY(

  4057                                     env, clazz, (void *) methods, nMethods);

  4058 #endif /* USDT2 */

  4059   jint ret = 0;

  4060   DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);

  4062   KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  4064   for (int index = 0; index < nMethods; index++) {

  4065     const char* meth_name = methods[index].name;

  4066     const char* meth_sig = methods[index].signature;

  4067     int meth_name_len = (int)strlen(meth_name);

  4069     // The class should have been loaded (we have an instance of the class

  4070     // passed in) so the method and signature should already be in the symbol

  4071     // table.  If they're not there, the method doesn't exist.

  4072     TempNewSymbol  name = SymbolTable::probe(meth_name, meth_name_len);

  4073     TempNewSymbol  signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));

  4075     if (name == NULL || signature == NULL) {

  4076       ResourceMark rm;

  4077       stringStream st;

  4078       st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);

  4079       // Must return negative value on failure

  4080       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);

  4081     }

  4083     bool res = register_native(h_k, name, signature,

  4084                                (address) methods[index].fnPtr, THREAD);

  4085     if (!res) {

  4086       ret = -1;

  4087       break;

  4088     }

  4089   }

  4090   return ret;

  4091 JNI_END

  4094 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))

  4095   JNIWrapper("UnregisterNatives");

  4096 #ifndef USDT2

  4097   DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);

  4098 #else /* USDT2 */

  4099  HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(

  4100                                      env, clazz);

  4101 #endif /* USDT2 */

  4102   Klass* k   = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));

  4103   //%note jni_2

  4104   if (k->oop_is_instance()) {

  4105     for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {

  4106       Method* m = InstanceKlass::cast(k)->methods()->at(index);

  4107       if (m->is_native()) {

  4108         m->clear_native_function();

  4109         m->set_signature_handler(NULL);

  4110       }

  4111     }

  4112   }

  4113 #ifndef USDT2

  4114   DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);

  4115 #else /* USDT2 */

  4116  HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(

  4117                                       0);

  4118 #endif /* USDT2 */

  4119   return 0;

  4120 JNI_END

  4122 //

  4123 // Monitor functions

  4124 //

  4126 #ifndef USDT2

  4127 DT_RETURN_MARK_DECL(MonitorEnter, jint);

  4128 #else /* USDT2 */

  4129 DT_RETURN_MARK_DECL(MonitorEnter, jint

  4130                     , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));

  4131 #endif /* USDT2 */

  4133 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))

  4134 #ifndef USDT2

  4135   DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);

  4136 #else /* USDT2 */

  4137  HOTSPOT_JNI_MONITORENTER_ENTRY(

  4138                                 env, jobj);

  4139 #endif /* USDT2 */

  4140   jint ret = JNI_ERR;

  4141   DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);

  4143   // If the object is null, we can't do anything with it

  4144   if (jobj == NULL) {

  4145     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);

  4146   }

  4148   Handle obj(thread, JNIHandles::resolve_non_null(jobj));

  4149   ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));

  4150   ret = JNI_OK;

  4151   return ret;

  4152 JNI_END

  4154 #ifndef USDT2

  4155 DT_RETURN_MARK_DECL(MonitorExit, jint);

  4156 #else /* USDT2 */

  4157 DT_RETURN_MARK_DECL(MonitorExit, jint

  4158                     , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));

  4159 #endif /* USDT2 */

  4161 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))

  4162 #ifndef USDT2

  4163   DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);

  4164 #else /* USDT2 */

  4165  HOTSPOT_JNI_MONITOREXIT_ENTRY(

  4166                                env, jobj);

  4167 #endif /* USDT2 */

  4168   jint ret = JNI_ERR;

  4169   DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);

  4171   // Don't do anything with a null object

  4172   if (jobj == NULL) {

  4173     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);

  4174   }

  4176   Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));

  4177   ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));

  4179   ret = JNI_OK;

  4180   return ret;

  4181 JNI_END

  4183 //

  4184 // Extensions

  4185 //

  4187 #ifndef USDT2

  4188 DT_VOID_RETURN_MARK_DECL(GetStringRegion);

  4189 #else /* USDT2 */

  4190 DT_VOID_RETURN_MARK_DECL(GetStringRegion

  4191                          , HOTSPOT_JNI_GETSTRINGREGION_RETURN());

  4192 #endif /* USDT2 */

  4194 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))

  4195   JNIWrapper("GetStringRegion");

  4196 #ifndef USDT2

  4197   DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);

  4198 #else /* USDT2 */

  4199  HOTSPOT_JNI_GETSTRINGREGION_ENTRY(

  4200                                    env, string, start, len, buf);

  4201 #endif /* USDT2 */

  4202   DT_VOID_RETURN_MARK(GetStringRegion);

  4203   oop s = JNIHandles::resolve_non_null(string);

  4204   int s_len = java_lang_String::length(s);

  4205   if (start < 0 || len < 0 || start > s_len - len) {

  4206     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());

  4207   } else {

  4208     if (len > 0) {

  4209       int s_offset = java_lang_String::offset(s);

  4210       typeArrayOop s_value = java_lang_String::value(s);

  4211       memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);

  4212     }

  4213   }

  4214 JNI_END

  4216 #ifndef USDT2

  4217 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);

  4218 #else /* USDT2 */

  4219 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion

  4220                          , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());

  4221 #endif /* USDT2 */

  4223 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))

  4224   JNIWrapper("GetStringUTFRegion");

  4225 #ifndef USDT2

  4226   DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);

  4227 #else /* USDT2 */

  4228  HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(

  4229                                       env, string, start, len, buf);

  4230 #endif /* USDT2 */

  4231   DT_VOID_RETURN_MARK(GetStringUTFRegion);

  4232   oop s = JNIHandles::resolve_non_null(string);

  4233   int s_len = java_lang_String::length(s);

  4234   if (start < 0 || len < 0 || start > s_len - len) {

  4235     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());

  4236   } else {

  4237     //%note jni_7

  4238     if (len > 0) {

  4239       ResourceMark rm(THREAD);

  4240       char *utf_region = java_lang_String::as_utf8_string(s, start, len);

  4241       int utf_len = (int)strlen(utf_region);

  4242       memcpy(buf, utf_region, utf_len);

  4243       buf[utf_len] = 0;

  4244     } else {

  4245       // JDK null-terminates the buffer even in len is zero

  4246       if (buf != NULL) {

  4247         buf[0] = 0;

  4248       }

  4249     }

  4250   }

  4251 JNI_END

  4254 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))

  4255   JNIWrapper("GetPrimitiveArrayCritical");

  4256 #ifndef USDT2

  4257   DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);

  4258 #else /* USDT2 */

  4259  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(

  4260                                              env, array, (uintptr_t *) isCopy);

  4261 #endif /* USDT2 */

  4262   GC_locker::lock_critical(thread);

  4263   if (isCopy != NULL) {

  4264     *isCopy = JNI_FALSE;

  4265   }

  4266   oop a = JNIHandles::resolve_non_null(array);

  4267   assert(a->is_array(), "just checking");

  4268   BasicType type;

  4269   if (a->is_objArray()) {

  4270     type = T_OBJECT;

  4271   } else {

  4272     type = TypeArrayKlass::cast(a->klass())->element_type();

  4273   }

  4274   void* ret = arrayOop(a)->base(type);

  4275 #ifndef USDT2

  4276   DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);

  4277 #else /* USDT2 */

  4278  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(

  4279                                               ret);

  4280 #endif /* USDT2 */

  4281   return ret;

  4282 JNI_END

  4285 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))

  4286   JNIWrapper("ReleasePrimitiveArrayCritical");

  4287 #ifndef USDT2

  4288   DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);

  4289 #else /* USDT2 */

  4290   HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(

  4291                                                   env, array, carray, mode);

  4292 #endif /* USDT2 */

  4293   // The array, carray and mode arguments are ignored

  4294   GC_locker::unlock_critical(thread);

  4295 #ifndef USDT2

  4296   DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);

  4297 #else /* USDT2 */

  4298 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(

  4299 );

  4300 #endif /* USDT2 */

  4301 JNI_END

  4304 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))

  4305   JNIWrapper("GetStringCritical");

  4306 #ifndef USDT2

  4307   DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);

  4308 #else /* USDT2 */

  4309   HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(

  4310                                       env, string, (uintptr_t *) isCopy);

  4311 #endif /* USDT2 */

  4312   GC_locker::lock_critical(thread);

  4313   if (isCopy != NULL) {

  4314     *isCopy = JNI_FALSE;

  4315   }

  4316   oop s = JNIHandles::resolve_non_null(string);

  4317   int s_len = java_lang_String::length(s);

  4318   typeArrayOop s_value = java_lang_String::value(s);

  4319   int s_offset = java_lang_String::offset(s);

  4320   const jchar* ret;

  4321   if (s_len > 0) {

  4322     ret = s_value->char_at_addr(s_offset);

  4323   } else {

  4324     ret = (jchar*) s_value->base(T_CHAR);

  4325   }

  4326 #ifndef USDT2

  4327   DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);

  4328 #else /* USDT2 */

  4329  HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(

  4330                                       (uint16_t *) ret);

  4331 #endif /* USDT2 */

  4332   return ret;

  4333 JNI_END

  4336 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))

  4337   JNIWrapper("ReleaseStringCritical");

  4338 #ifndef USDT2

  4339   DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);

  4340 #else /* USDT2 */

  4341   HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(

  4342                                           env, str, (uint16_t *) chars);

  4343 #endif /* USDT2 */

  4344   // The str and chars arguments are ignored

  4345   GC_locker::unlock_critical(thread);

  4346 #ifndef USDT2

  4347   DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);

  4348 #else /* USDT2 */

  4349 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(

  4350 );

  4351 #endif /* USDT2 */

  4352 JNI_END

  4355 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))

  4356   JNIWrapper("jni_NewWeakGlobalRef");

  4357 #ifndef USDT2

  4358   DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);

  4359 #else /* USDT2 */

  4360  HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(

  4361                                     env, ref);

  4362 #endif /* USDT2 */

  4363   Handle ref_handle(thread, JNIHandles::resolve(ref));

  4364   jweak ret = JNIHandles::make_weak_global(ref_handle);

  4365 #ifndef USDT2

  4366   DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);

  4367 #else /* USDT2 */

  4368  HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(

  4369                                      ret);

  4370 #endif /* USDT2 */

  4371   return ret;

  4372 JNI_END

  4374 // Must be JNI_ENTRY (with HandleMark)

  4375 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))

  4376   JNIWrapper("jni_DeleteWeakGlobalRef");

  4377 #ifndef USDT2

  4378   DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);

  4379 #else /* USDT2 */

  4380   HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(

  4381                                         env, ref);

  4382 #endif /* USDT2 */

  4383   JNIHandles::destroy_weak_global(ref);

  4384 #ifndef USDT2

  4385   DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);

  4386 #else /* USDT2 */

  4387   HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(

  4388                                          );

  4389 #endif /* USDT2 */

  4390 JNI_END

  4393 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))

  4394   JNIWrapper("jni_ExceptionCheck");

  4395 #ifndef USDT2

  4396   DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);

  4397 #else /* USDT2 */

  4398  HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(

  4399                                   env);

  4400 #endif /* USDT2 */

  4401   jni_check_async_exceptions(thread);

  4402   jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;

  4403 #ifndef USDT2

  4404   DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);

  4405 #else /* USDT2 */

  4406  HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(

  4407                                    ret);

  4408 #endif /* USDT2 */

  4409   return ret;

  4410 JNI_END

  4413 // Initialization state for three routines below relating to

  4414 // java.nio.DirectBuffers

  4415 static          jint directBufferSupportInitializeStarted = 0;

  4416 static volatile jint directBufferSupportInitializeEnded   = 0;

  4417 static volatile jint directBufferSupportInitializeFailed  = 0;

  4418 static jclass    bufferClass                 = NULL;

  4419 static jclass    directBufferClass           = NULL;

  4420 static jclass    directByteBufferClass       = NULL;

  4421 static jmethodID directByteBufferConstructor = NULL;

  4422 static jfieldID  directBufferAddressField    = NULL;

  4423 static jfieldID  bufferCapacityField         = NULL;

  4425 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {

  4426   Handle loader;            // null (bootstrap) loader

  4427   Handle protection_domain; // null protection domain

  4429   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);

  4430   jclass result =  find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);

  4432   if (TraceClassResolution && result != NULL) {

  4433     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));

  4434   }

  4435   return result;

  4436 }

  4438 // These lookups are done with the NULL (bootstrap) ClassLoader to

  4439 // circumvent any security checks that would be done by jni_FindClass.

  4440 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))

  4441 {

  4442   if ((bufferClass           = lookupOne(env, "java/nio/Buffer", thread))           == NULL) { return false; }

  4443   if ((directBufferClass     = lookupOne(env, "sun/nio/ch/DirectBuffer", thread))   == NULL) { return false; }

  4444   if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }

  4445   return true;

  4446 }

  4447 JNI_END

  4450 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {

  4451   if (directBufferSupportInitializeFailed) {

  4452     return false;

  4453   }

  4455   if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {

  4456     if (!lookupDirectBufferClasses(env)) {

  4457       directBufferSupportInitializeFailed = 1;

  4458       return false;

  4459     }

  4461     // Make global references for these

  4462     bufferClass           = (jclass) env->NewGlobalRef(bufferClass);

  4463     directBufferClass     = (jclass) env->NewGlobalRef(directBufferClass);

  4464     directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);

  4466     // Get needed field and method IDs

  4467     directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");

  4468     if (env->ExceptionCheck()) {

  4469       env->ExceptionClear();

  4470       directBufferSupportInitializeFailed = 1;

  4471       return false;

  4472     }

  4473     directBufferAddressField    = env->GetFieldID(bufferClass, "address", "J");

  4474     if (env->ExceptionCheck()) {

  4475       env->ExceptionClear();

  4476       directBufferSupportInitializeFailed = 1;

  4477       return false;

  4478     }

  4479     bufferCapacityField         = env->GetFieldID(bufferClass, "capacity", "I");

  4480     if (env->ExceptionCheck()) {

  4481       env->ExceptionClear();

  4482       directBufferSupportInitializeFailed = 1;

  4483       return false;

  4484     }

  4486     if ((directByteBufferConstructor == NULL) ||

  4487         (directBufferAddressField    == NULL) ||

  4488         (bufferCapacityField         == NULL)) {

  4489       directBufferSupportInitializeFailed = 1;

  4490       return false;

  4491     }

  4493     directBufferSupportInitializeEnded = 1;

  4494   } else {

  4495     while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {

  4496       // Set state as yield_all can call os:sleep. On Solaris, yield_all calls

  4497       // os::sleep which requires the VM state transition. On other platforms, it

  4498       // is not necessary. The following call to change the VM state is purposely

  4499       // put inside the loop to avoid potential deadlock when multiple threads

  4500       // try to call this method. See 6791815 for more details.

  4501       ThreadInVMfromNative tivn(thread);

  4502       os::yield_all();

  4503     }

  4504   }

  4506   return !directBufferSupportInitializeFailed;

  4507 }

  4509 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)

  4510 {

  4511   // thread_from_jni_environment() will block if VM is gone.

  4512   JavaThread* thread = JavaThread::thread_from_jni_environment(env);

  4514   JNIWrapper("jni_NewDirectByteBuffer");

  4515 #ifndef USDT2

  4516   DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);

  4517 #else /* USDT2 */

  4518  HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(

  4519                                        env, address, capacity);

  4520 #endif /* USDT2 */

  4522   if (!directBufferSupportInitializeEnded) {

  4523     if (!initializeDirectBufferSupport(env, thread)) {

  4524 #ifndef USDT2

  4525       DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);

  4526 #else /* USDT2 */

  4527       HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(

  4528                                              NULL);

  4529 #endif /* USDT2 */

  4530       return NULL;

  4531     }

  4532   }

  4534   // Being paranoid about accidental sign extension on address

  4535   jlong addr = (jlong) ((uintptr_t) address);

  4536   // NOTE that package-private DirectByteBuffer constructor currently

  4537   // takes int capacity

  4538   jint  cap  = (jint)  capacity;

  4539   jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);

  4540 #ifndef USDT2

  4541   DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);

  4542 #else /* USDT2 */

  4543   HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(

  4544                                          ret);

  4545 #endif /* USDT2 */

  4546   return ret;

  4547 }

  4549 #ifndef USDT2

  4550 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);

  4551 #else /* USDT2 */

  4552 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*

  4553                     , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));

  4554 #endif /* USDT2 */

  4556 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)

  4557 {

  4558   // thread_from_jni_environment() will block if VM is gone.

  4559   JavaThread* thread = JavaThread::thread_from_jni_environment(env);

  4561   JNIWrapper("jni_GetDirectBufferAddress");

  4562 #ifndef USDT2

  4563   DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);

  4564 #else /* USDT2 */

  4565   HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(

  4566                                            env, buf);

  4567 #endif /* USDT2 */

  4568   void* ret = NULL;

  4569   DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);

  4571   if (!directBufferSupportInitializeEnded) {

  4572     if (!initializeDirectBufferSupport(env, thread)) {

  4573       return 0;

  4574     }

  4575   }

  4577   if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {

  4578     return 0;

  4579   }

  4581   ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);

  4582   return ret;

  4583 }

  4585 #ifndef USDT2

  4586 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);

  4587 #else /* USDT2 */

  4588 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong

  4589                     , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));

  4590 #endif /* USDT2 */

  4592 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)

  4593 {

  4594   // thread_from_jni_environment() will block if VM is gone.

  4595   JavaThread* thread = JavaThread::thread_from_jni_environment(env);

  4597   JNIWrapper("jni_GetDirectBufferCapacity");

  4598 #ifndef USDT2

  4599   DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);

  4600 #else /* USDT2 */

  4601   HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(

  4602                                             env, buf);

  4603 #endif /* USDT2 */

  4604   jlong ret = -1;

  4605   DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);

  4607   if (!directBufferSupportInitializeEnded) {

  4608     if (!initializeDirectBufferSupport(env, thread)) {

  4609       ret = 0;

  4610       return ret;

  4611     }

  4612   }

  4614   if (buf == NULL) {

  4615     return -1;

  4616   }

  4618   if (!env->IsInstanceOf(buf, directBufferClass)) {

  4619     return -1;

  4620   }

  4622   // NOTE that capacity is currently an int in the implementation

  4623   ret = env->GetIntField(buf, bufferCapacityField);

  4624   return ret;

  4625 }

  4628 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))

  4629   JNIWrapper("GetVersion");

  4630 #ifndef USDT2

  4631   DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);

  4632 #else /* USDT2 */

  4633   HOTSPOT_JNI_GETVERSION_ENTRY(

  4634                                env);

  4635 #endif /* USDT2 */

  4636 #ifndef USDT2

  4637   DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);

  4638 #else /* USDT2 */

  4639   HOTSPOT_JNI_GETVERSION_RETURN(

  4640                                 CurrentVersion);

  4641 #endif /* USDT2 */

  4642   return CurrentVersion;

  4643 JNI_END

  4645 extern struct JavaVM_ main_vm;

  4647 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))

  4648   JNIWrapper("jni_GetJavaVM");

  4649 #ifndef USDT2

  4650   DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);

  4651 #else /* USDT2 */

  4652   HOTSPOT_JNI_GETJAVAVM_ENTRY(

  4653                               env, (void **) vm);

  4654 #endif /* USDT2 */

  4655   *vm  = (JavaVM *)(&main_vm);

  4656 #ifndef USDT2

  4657   DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);

  4658 #else /* USDT2 */

  4659   HOTSPOT_JNI_GETJAVAVM_RETURN(

  4660                                JNI_OK);

  4661 #endif /* USDT2 */

  4662   return JNI_OK;

  4663 JNI_END

  4665 // Structure containing all jni functions

  4666 struct JNINativeInterface_ jni_NativeInterface = {

  4667     NULL,

  4668     NULL,

  4669     NULL,

  4671     NULL,

  4673     jni_GetVersion,

  4675     jni_DefineClass,

  4676     jni_FindClass,

  4678     jni_FromReflectedMethod,

  4679     jni_FromReflectedField,

  4681     jni_ToReflectedMethod,

  4683     jni_GetSuperclass,

  4684     jni_IsAssignableFrom,

  4686     jni_ToReflectedField,

  4688     jni_Throw,

  4689     jni_ThrowNew,

  4690     jni_ExceptionOccurred,

  4691     jni_ExceptionDescribe,

  4692     jni_ExceptionClear,

  4693     jni_FatalError,

  4695     jni_PushLocalFrame,

  4696     jni_PopLocalFrame,

  4698     jni_NewGlobalRef,

  4699     jni_DeleteGlobalRef,

  4700     jni_DeleteLocalRef,

  4701     jni_IsSameObject,

  4703     jni_NewLocalRef,

  4704     jni_EnsureLocalCapacity,

  4706     jni_AllocObject,

  4707     jni_NewObject,

  4708     jni_NewObjectV,

  4709     jni_NewObjectA,

  4711     jni_GetObjectClass,

  4712     jni_IsInstanceOf,

  4714     jni_GetMethodID,

  4716     jni_CallObjectMethod,

  4717     jni_CallObjectMethodV,

  4718     jni_CallObjectMethodA,

  4719     jni_CallBooleanMethod,

  4720     jni_CallBooleanMethodV,

  4721     jni_CallBooleanMethodA,

  4722     jni_CallByteMethod,

  4723     jni_CallByteMethodV,

  4724     jni_CallByteMethodA,

  4725     jni_CallCharMethod,

  4726     jni_CallCharMethodV,

  4727     jni_CallCharMethodA,

  4728     jni_CallShortMethod,

  4729     jni_CallShortMethodV,

  4730     jni_CallShortMethodA,

  4731     jni_CallIntMethod,

  4732     jni_CallIntMethodV,

  4733     jni_CallIntMethodA,

  4734     jni_CallLongMethod,

  4735     jni_CallLongMethodV,

  4736     jni_CallLongMethodA,

  4737     jni_CallFloatMethod,

  4738     jni_CallFloatMethodV,

  4739     jni_CallFloatMethodA,

  4740     jni_CallDoubleMethod,

  4741     jni_CallDoubleMethodV,

  4742     jni_CallDoubleMethodA,

  4743     jni_CallVoidMethod,

  4744     jni_CallVoidMethodV,

  4745     jni_CallVoidMethodA,

  4747     jni_CallNonvirtualObjectMethod,

  4748     jni_CallNonvirtualObjectMethodV,

  4749     jni_CallNonvirtualObjectMethodA,

  4750     jni_CallNonvirtualBooleanMethod,

  4751     jni_CallNonvirtualBooleanMethodV,

  4752     jni_CallNonvirtualBooleanMethodA,

  4753     jni_CallNonvirtualByteMethod,

  4754     jni_CallNonvirtualByteMethodV,

  4755     jni_CallNonvirtualByteMethodA,

  4756     jni_CallNonvirtualCharMethod,

  4757     jni_CallNonvirtualCharMethodV,

  4758     jni_CallNonvirtualCharMethodA,

  4759     jni_CallNonvirtualShortMethod,

  4760     jni_CallNonvirtualShortMethodV,

  4761     jni_CallNonvirtualShortMethodA,

  4762     jni_CallNonvirtualIntMethod,

  4763     jni_CallNonvirtualIntMethodV,

  4764     jni_CallNonvirtualIntMethodA,

  4765     jni_CallNonvirtualLongMethod,

  4766     jni_CallNonvirtualLongMethodV,

  4767     jni_CallNonvirtualLongMethodA,

  4768     jni_CallNonvirtualFloatMethod,

  4769     jni_CallNonvirtualFloatMethodV,

  4770     jni_CallNonvirtualFloatMethodA,

  4771     jni_CallNonvirtualDoubleMethod,

  4772     jni_CallNonvirtualDoubleMethodV,

  4773     jni_CallNonvirtualDoubleMethodA,

  4774     jni_CallNonvirtualVoidMethod,

  4775     jni_CallNonvirtualVoidMethodV,

  4776     jni_CallNonvirtualVoidMethodA,

  4778     jni_GetFieldID,

  4780     jni_GetObjectField,

  4781     jni_GetBooleanField,

  4782     jni_GetByteField,

  4783     jni_GetCharField,

  4784     jni_GetShortField,

  4785     jni_GetIntField,

  4786     jni_GetLongField,

  4787     jni_GetFloatField,

  4788     jni_GetDoubleField,

  4790     jni_SetObjectField,

  4791     jni_SetBooleanField,

  4792     jni_SetByteField,

  4793     jni_SetCharField,

  4794     jni_SetShortField,

  4795     jni_SetIntField,

  4796     jni_SetLongField,

  4797     jni_SetFloatField,

  4798     jni_SetDoubleField,

  4800     jni_GetStaticMethodID,

  4802     jni_CallStaticObjectMethod,

  4803     jni_CallStaticObjectMethodV,

  4804     jni_CallStaticObjectMethodA,

  4805     jni_CallStaticBooleanMethod,

  4806     jni_CallStaticBooleanMethodV,

  4807     jni_CallStaticBooleanMethodA,

  4808     jni_CallStaticByteMethod,

  4809     jni_CallStaticByteMethodV,

  4810     jni_CallStaticByteMethodA,

  4811     jni_CallStaticCharMethod,

  4812     jni_CallStaticCharMethodV,

  4813     jni_CallStaticCharMethodA,

  4814     jni_CallStaticShortMethod,

  4815     jni_CallStaticShortMethodV,

  4816     jni_CallStaticShortMethodA,

  4817     jni_CallStaticIntMethod,

  4818     jni_CallStaticIntMethodV,

  4819     jni_CallStaticIntMethodA,

  4820     jni_CallStaticLongMethod,

  4821     jni_CallStaticLongMethodV,

  4822     jni_CallStaticLongMethodA,

  4823     jni_CallStaticFloatMethod,

  4824     jni_CallStaticFloatMethodV,

  4825     jni_CallStaticFloatMethodA,

  4826     jni_CallStaticDoubleMethod,

  4827     jni_CallStaticDoubleMethodV,

  4828     jni_CallStaticDoubleMethodA,

  4829     jni_CallStaticVoidMethod,

  4830     jni_CallStaticVoidMethodV,

  4831     jni_CallStaticVoidMethodA,

  4833     jni_GetStaticFieldID,

  4835     jni_GetStaticObjectField,

  4836     jni_GetStaticBooleanField,

  4837     jni_GetStaticByteField,

  4838     jni_GetStaticCharField,

  4839     jni_GetStaticShortField,

  4840     jni_GetStaticIntField,

  4841     jni_GetStaticLongField,

  4842     jni_GetStaticFloatField,

  4843     jni_GetStaticDoubleField,

  4845     jni_SetStaticObjectField,

  4846     jni_SetStaticBooleanField,

  4847     jni_SetStaticByteField,

  4848     jni_SetStaticCharField,

  4849     jni_SetStaticShortField,

  4850     jni_SetStaticIntField,

  4851     jni_SetStaticLongField,

  4852     jni_SetStaticFloatField,

  4853     jni_SetStaticDoubleField,

  4855     jni_NewString,

  4856     jni_GetStringLength,

  4857     jni_GetStringChars,

  4858     jni_ReleaseStringChars,

  4860     jni_NewStringUTF,

  4861     jni_GetStringUTFLength,

  4862     jni_GetStringUTFChars,

  4863     jni_ReleaseStringUTFChars,

  4865     jni_GetArrayLength,

  4867     jni_NewObjectArray,

  4868     jni_GetObjectArrayElement,

  4869     jni_SetObjectArrayElement,

  4871     jni_NewBooleanArray,

  4872     jni_NewByteArray,

  4873     jni_NewCharArray,

  4874     jni_NewShortArray,

  4875     jni_NewIntArray,

  4876     jni_NewLongArray,

  4877     jni_NewFloatArray,

  4878     jni_NewDoubleArray,

  4880     jni_GetBooleanArrayElements,

  4881     jni_GetByteArrayElements,

  4882     jni_GetCharArrayElements,

  4883     jni_GetShortArrayElements,

  4884     jni_GetIntArrayElements,

  4885     jni_GetLongArrayElements,

  4886     jni_GetFloatArrayElements,

  4887     jni_GetDoubleArrayElements,

  4889     jni_ReleaseBooleanArrayElements,

  4890     jni_ReleaseByteArrayElements,

  4891     jni_ReleaseCharArrayElements,

  4892     jni_ReleaseShortArrayElements,

  4893     jni_ReleaseIntArrayElements,

  4894     jni_ReleaseLongArrayElements,

  4895     jni_ReleaseFloatArrayElements,

  4896     jni_ReleaseDoubleArrayElements,

  4898     jni_GetBooleanArrayRegion,

  4899     jni_GetByteArrayRegion,

  4900     jni_GetCharArrayRegion,

  4901     jni_GetShortArrayRegion,

  4902     jni_GetIntArrayRegion,

  4903     jni_GetLongArrayRegion,

  4904     jni_GetFloatArrayRegion,

  4905     jni_GetDoubleArrayRegion,

  4907     jni_SetBooleanArrayRegion,

  4908     jni_SetByteArrayRegion,

  4909     jni_SetCharArrayRegion,

  4910     jni_SetShortArrayRegion,

  4911     jni_SetIntArrayRegion,

  4912     jni_SetLongArrayRegion,

  4913     jni_SetFloatArrayRegion,

  4914     jni_SetDoubleArrayRegion,

  4916     jni_RegisterNatives,

  4917     jni_UnregisterNatives,

  4919     jni_MonitorEnter,

  4920     jni_MonitorExit,

  4922     jni_GetJavaVM,

  4924     jni_GetStringRegion,

  4925     jni_GetStringUTFRegion,

  4927     jni_GetPrimitiveArrayCritical,

  4928     jni_ReleasePrimitiveArrayCritical,

  4930     jni_GetStringCritical,

  4931     jni_ReleaseStringCritical,

  4933     jni_NewWeakGlobalRef,

  4934     jni_DeleteWeakGlobalRef,

  4936     jni_ExceptionCheck,

  4938     jni_NewDirectByteBuffer,

  4939     jni_GetDirectBufferAddress,

  4940     jni_GetDirectBufferCapacity,

  4942     // New 1_6 features

  4944     jni_GetObjectRefType

  4945 };

  4948 // For jvmti use to modify jni function table.

  4949 // Java threads in native contiues to run until it is transitioned

  4950 // to VM at safepoint. Before the transition or before it is blocked

  4951 // for safepoint it may access jni function table. VM could crash if

  4952 // any java thread access the jni function table in the middle of memcpy.

  4953 // To avoid this each function pointers are copied automically.

  4954 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {

  4955   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");

  4956   intptr_t *a = (intptr_t *) jni_functions();

  4957   intptr_t *b = (intptr_t *) new_jni_NativeInterface;

  4958   for (uint i=0; i <  sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {

  4959     Atomic::store_ptr(*b++, a++);

  4960   }

  4961 }

  4963 void quicken_jni_functions() {

  4964   // Replace Get<Primitive>Field with fast versions

  4965   if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()

  4966       && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls

  4967 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)

  4968       // windows x86 currently needs SEH wrapper and the gain of the fast

  4969       // versions currently isn't certain for server vm on uniprocessor.

  4970       && os::is_MP()

  4971 #endif

  4972   ) {

  4973     address func;

  4974     func = JNI_FastGetField::generate_fast_get_boolean_field();

  4975     if (func != (address)-1) {

  4976       jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;

  4977     }

  4978     func = JNI_FastGetField::generate_fast_get_byte_field();

  4979     if (func != (address)-1) {

  4980       jni_NativeInterface.GetByteField = (GetByteField_t)func;

  4981     }

  4982     func = JNI_FastGetField::generate_fast_get_char_field();

  4983     if (func != (address)-1) {

  4984       jni_NativeInterface.GetCharField = (GetCharField_t)func;

  4985     }

  4986     func = JNI_FastGetField::generate_fast_get_short_field();

  4987     if (func != (address)-1) {

  4988       jni_NativeInterface.GetShortField = (GetShortField_t)func;

  4989     }

  4990     func = JNI_FastGetField::generate_fast_get_int_field();

  4991     if (func != (address)-1) {

  4992       jni_NativeInterface.GetIntField = (GetIntField_t)func;

  4993     }

  4994     func = JNI_FastGetField::generate_fast_get_long_field();

  4995     if (func != (address)-1) {

  4996       jni_NativeInterface.GetLongField = (GetLongField_t)func;

  4997     }

  4998     func = JNI_FastGetField::generate_fast_get_float_field();

  4999     if (func != (address)-1) {

  5000       jni_NativeInterface.GetFloatField = (GetFloatField_t)func;

  5001     }

  5002     func = JNI_FastGetField::generate_fast_get_double_field();

  5003     if (func != (address)-1) {

  5004       jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;

  5005     }

  5006   }

  5007 }

  5009 // Returns the function structure

  5010 struct JNINativeInterface_* jni_functions() {

  5011 #if INCLUDE_JNI_CHECK

  5012   if (CheckJNICalls) return jni_functions_check();

  5013 #endif // INCLUDE_JNI_CHECK

  5014   return &jni_NativeInterface;

  5015 }

  5017 // Returns the function structure

  5018 struct JNINativeInterface_* jni_functions_nocheck() {

  5019   return &jni_NativeInterface;

  5020 }

  5023 // Invocation API

  5026 // Forward declaration

  5027 extern const struct JNIInvokeInterface_ jni_InvokeInterface;

  5029 // Global invocation API vars

  5030 volatile jint vm_created = 0;

  5031 // Indicate whether it is safe to recreate VM

  5032 volatile jint safe_to_recreate_vm = 1;

  5033 struct JavaVM_ main_vm = {&jni_InvokeInterface};

  5036 #define JAVASTACKSIZE (400 * 1024)    /* Default size of a thread java stack */

  5037 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };

  5039 #ifndef USDT2

  5040 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);

  5041 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);

  5042 #else /* USDT2 */

  5043 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint

  5044                     , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));

  5045 #endif /* USDT2 */

  5047 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {

  5048 #ifndef USDT2

  5049   HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);

  5050 #else /* USDT2 */

  5051   HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(

  5052                                              args_);

  5053 #endif /* USDT2 */

  5054   JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;

  5055   jint ret = JNI_ERR;

  5056   DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);

  5058   if (Threads::is_supported_jni_version(args->version)) {

  5059     ret = JNI_OK;

  5060   }

  5061   // 1.1 style no longer supported in hotspot.

  5062   // According the JNI spec, we should update args->version on return.

  5063   // We also use the structure to communicate with launcher about default

  5064   // stack size.

  5065   if (args->version == JNI_VERSION_1_1) {

  5066     args->version = JNI_VERSION_1_2;

  5067     // javaStackSize is int in arguments structure

  5068     assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");

  5069     args->javaStackSize = (jint)(ThreadStackSize * K);

  5070   }

  5071   return ret;

  5072 }

  5074 #ifndef PRODUCT

  5076 #include "gc_implementation/shared/gcTimer.hpp"

  5077 #include "gc_interface/collectedHeap.hpp"

  5078 #if INCLUDE_ALL_GCS

  5079 #include "gc_implementation/g1/heapRegionRemSet.hpp"

  5080 #endif

  5081 #include "memory/guardedMemory.hpp"

  5082 #include "utilities/quickSort.hpp"

  5083 #include "utilities/ostream.hpp"

  5084 #if INCLUDE_VM_STRUCTS

  5085 #include "runtime/vmStructs.hpp"

  5086 #endif

  5088 #define run_unit_test(unit_test_function_call)              \

  5089   tty->print_cr("Running test: " #unit_test_function_call); \

  5090   unit_test_function_call

  5092 // Forward declaration

  5093 void TestOS_test();

  5094 void TestReservedSpace_test();

  5095 void TestReserveMemorySpecial_test();

  5096 void TestVirtualSpace_test();

  5097 void TestMetaspaceAux_test();

  5098 void SpaceManager_test_adjust_initial_chunk_size();

  5099 void TestMetachunk_test();

  5100 void TestVirtualSpaceNode_test();

  5101 void TestNewSize_test();

  5102 void TestKlass_test();

  5103 void Test_linked_list();

  5104 void TestChunkedList_test();

  5105 #if INCLUDE_ALL_GCS

  5106 void TestOldFreeSpaceCalculation_test();

  5107 void TestG1BiasedArray_test();

  5108 void TestBufferingOopClosure_test();

  5109 void TestCodeCacheRemSet_test();

  5110 void FreeRegionList_test();

  5111 void ChunkManager_test_list_index();

  5112 #endif

  5114 void execute_internal_vm_tests() {

  5115   if (ExecuteInternalVMTests) {

  5116     tty->print_cr("Running internal VM tests");

  5117     run_unit_test(TestOS_test());

  5118     run_unit_test(TestReservedSpace_test());

  5119     run_unit_test(TestReserveMemorySpecial_test());

  5120     run_unit_test(TestVirtualSpace_test());

  5121     run_unit_test(TestMetaspaceAux_test());

  5122     run_unit_test(TestMetachunk_test());

  5123     run_unit_test(TestVirtualSpaceNode_test());

  5124     run_unit_test(GlobalDefinitions::test_globals());

  5125     run_unit_test(GlobalDefinitions::test_proper_unit());

  5126     run_unit_test(GCTimerAllTest::all());

  5127     run_unit_test(arrayOopDesc::test_max_array_length());

  5128     run_unit_test(CollectedHeap::test_is_in());

  5129     run_unit_test(QuickSort::test_quick_sort());

  5130     run_unit_test(GuardedMemory::test_guarded_memory());

  5131     run_unit_test(AltHashing::test_alt_hash());

  5132     run_unit_test(test_loggc_filename());

  5133     run_unit_test(test_snprintf());

  5134     run_unit_test(TestNewSize_test());

  5135     run_unit_test(TestKlass_test());

  5136     run_unit_test(Test_linked_list());

  5137     run_unit_test(TestChunkedList_test());

  5138     run_unit_test(ObjectMonitor::sanity_checks());

  5139 #if INCLUDE_VM_STRUCTS

  5140     run_unit_test(VMStructs::test());

  5141 #endif

  5142 #if INCLUDE_ALL_GCS

  5143     run_unit_test(TestOldFreeSpaceCalculation_test());

  5144     run_unit_test(TestG1BiasedArray_test());

  5145     run_unit_test(HeapRegionRemSet::test_prt());

  5146     run_unit_test(SpaceManager_test_adjust_initial_chunk_size());

  5147     run_unit_test(ChunkManager_test_list_index());

  5148     run_unit_test(TestBufferingOopClosure_test());

  5149     run_unit_test(TestCodeCacheRemSet_test());

  5150     if (UseG1GC) {

  5151       run_unit_test(FreeRegionList_test());

  5152     }

  5153 #endif

  5154     tty->print_cr("All internal VM tests passed");

  5155   }

  5156 }

  5158 #undef run_unit_test

  5160 #endif

  5162 #ifndef USDT2

  5163 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);

  5164 DT_RETURN_MARK_DECL(CreateJavaVM, jint);

  5165 #else /* USDT2 */

  5166 DT_RETURN_MARK_DECL(CreateJavaVM, jint

  5167                     , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));

  5168 #endif /* USDT2 */

  5170 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {

  5171 #ifndef USDT2

  5172   HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);

  5173 #else /* USDT2 */

  5174   HOTSPOT_JNI_CREATEJAVAVM_ENTRY(

  5175                                  (void **) vm, penv, args);

  5176 #endif /* USDT2 */

  5178   jint result = JNI_ERR;

  5179   DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);

  5181   // We're about to use Atomic::xchg for synchronization.  Some Zero

  5182   // platforms use the GCC builtin __sync_lock_test_and_set for this,

  5183   // but __sync_lock_test_and_set is not guaranteed to do what we want

  5184   // on all architectures.  So we check it works before relying on it.

  5185 #if defined(ZERO) && defined(ASSERT)

  5186   {

  5187     jint a = 0xcafebabe;

  5188     jint b = Atomic::xchg(0xdeadbeef, &a);

  5189     void *c = &a;

  5190     void *d = Atomic::xchg_ptr(&b, &c);

  5191     assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");

  5192     assert(c == &b && d == &a, "Atomic::xchg_ptr() works");

  5193   }

  5194 #endif // ZERO && ASSERT

  5196   // At the moment it's only possible to have one Java VM,

  5197   // since some of the runtime state is in global variables.

  5199   // We cannot use our mutex locks here, since they only work on

  5200   // Threads. We do an atomic compare and exchange to ensure only

  5201   // one thread can call this method at a time

  5203   // We use Atomic::xchg rather than Atomic::add/dec since on some platforms

  5204   // the add/dec implementations are dependent on whether we are running

  5205   // on a multiprocessor, and at this stage of initialization the os::is_MP

  5206   // function used to determine this will always return false. Atomic::xchg

  5207   // does not have this problem.

  5208   if (Atomic::xchg(1, &vm_created) == 1) {

  5209     return JNI_EEXIST;   // already created, or create attempt in progress

  5210   }

  5211   if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {

  5212     return JNI_ERR;  // someone tried and failed and retry not allowed.

  5213   }

  5215   assert(vm_created == 1, "vm_created is true during the creation");

  5217   /**

  5218    * Certain errors during initialization are recoverable and do not

  5219    * prevent this method from being called again at a later time

  5220    * (perhaps with different arguments).  However, at a certain

  5221    * point during initialization if an error occurs we cannot allow

  5222    * this function to be called again (or it will crash).  In those

  5223    * situations, the 'canTryAgain' flag is set to false, which atomically

  5224    * sets safe_to_recreate_vm to 1, such that any new call to

  5225    * JNI_CreateJavaVM will immediately fail using the above logic.

  5226    */

  5227   bool can_try_again = true;

  5229   result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);

  5230   if (result == JNI_OK) {

  5231     JavaThread *thread = JavaThread::current();

  5232     /* thread is thread_in_vm here */

  5233     *vm = (JavaVM *)(&main_vm);

  5234     *(JNIEnv**)penv = thread->jni_environment();

  5236     // Tracks the time application was running before GC

  5237     RuntimeService::record_application_start();

  5239     // Notify JVMTI

  5240     if (JvmtiExport::should_post_thread_life()) {

  5241        JvmtiExport::post_thread_start(thread);

  5242     }

  5244     EventThreadStart event;

  5245     if (event.should_commit()) {

  5246       event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));

  5247       event.commit();

  5248     }

  5250 #ifndef PRODUCT

  5251   #ifndef CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED

  5252     #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()

  5253   #endif

  5255     // Check if we should compile all classes on bootclasspath

  5256     if (CompileTheWorld) ClassLoader::compile_the_world();

  5257     if (ReplayCompiles) ciReplay::replay(thread);

  5259     // Some platforms (like Win*) need a wrapper around these test

  5260     // functions in order to properly handle error conditions.

  5261     CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);

  5262     CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);

  5263 #endif

  5265     // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.

  5266     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);

  5267   } else {

  5268     if (can_try_again) {

  5269       // reset safe_to_recreate_vm to 1 so that retrial would be possible

  5270       safe_to_recreate_vm = 1;

  5271     }

  5273     // Creation failed. We must reset vm_created

  5274     *vm = 0;

  5275     *(JNIEnv**)penv = 0;

  5276     // reset vm_created last to avoid race condition. Use OrderAccess to

  5277     // control both compiler and architectural-based reordering.

  5278     OrderAccess::release_store(&vm_created, 0);

  5279   }

  5281   return result;

  5282 }

  5284 #ifndef USDT2

  5285 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \

  5286   JavaVM**, jsize, jsize*);

  5287 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);

  5288 #endif /* !USDT2 */

  5290 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {

  5291   // See bug 4367188, the wrapper can sometimes cause VM crashes

  5292   // JNIWrapper("GetCreatedJavaVMs");

  5293 #ifndef USDT2

  5294   HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \

  5295     vm_buf, bufLen, numVMs);

  5296 #else /* USDT2 */

  5297   HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(

  5298                                       (void **) vm_buf, bufLen, (uintptr_t *) numVMs);

  5299 #endif /* USDT2 */

  5300   if (vm_created) {

  5301     if (numVMs != NULL) *numVMs = 1;

  5302     if (bufLen > 0)     *vm_buf = (JavaVM *)(&main_vm);

  5303   } else {

  5304     if (numVMs != NULL) *numVMs = 0;

  5305   }

  5306 #ifndef USDT2

  5307   HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);

  5308 #else /* USDT2 */

  5309   HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(

  5310                                     JNI_OK);

  5311 #endif /* USDT2 */

  5312   return JNI_OK;

  5313 }

  5315 extern "C" {

  5317 #ifndef USDT2

  5318 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);

  5319 #else /* USDT2 */

  5320 DT_RETURN_MARK_DECL(DestroyJavaVM, jint

  5321                     , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));

  5322 #endif /* USDT2 */

  5324 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {

  5325 #ifndef USDT2

  5326   DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);

  5327 #else /* USDT2 */

  5328   HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(

  5329                                   vm);

  5330 #endif /* USDT2 */

  5331   jint res = JNI_ERR;

  5332   DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);

  5334   if (!vm_created) {

  5335     res = JNI_ERR;

  5336     return res;

  5337   }

  5339   JNIWrapper("DestroyJavaVM");

  5340   JNIEnv *env;

  5341   JavaVMAttachArgs destroyargs;

  5342   destroyargs.version = CurrentVersion;

  5343   destroyargs.name = (char *)"DestroyJavaVM";

  5344   destroyargs.group = NULL;

  5345   res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);

  5346   if (res != JNI_OK) {

  5347     return res;

  5348   }

  5350   // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.

  5351   JavaThread* thread = JavaThread::current();

  5352   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);

  5353   if (Threads::destroy_vm()) {

  5354     // Should not change thread state, VM is gone

  5355     vm_created = false;

  5356     res = JNI_OK;

  5357     return res;

  5358   } else {

  5359     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);

  5360     res = JNI_ERR;

  5361     return res;

  5362   }

  5363 }

  5366 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {

  5367   JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;

  5369   // Check below commented out from JDK1.2fcs as well

  5370   /*

  5371   if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {

  5372     return JNI_EVERSION;

  5373   }

  5374   */

  5376   Thread* t = ThreadLocalStorage::get_thread_slow();

  5377   if (t != NULL) {

  5378     // If the thread has been attached this operation is a no-op

  5379     *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();

  5380     return JNI_OK;

  5381   }

  5383   // Create a thread and mark it as attaching so it will be skipped by the

  5384   // ThreadsListEnumerator - see CR 6404306

  5385   JavaThread* thread = new JavaThread(true);

  5387   // Set correct safepoint info. The thread is going to call into Java when

  5388   // initializing the Java level thread object. Hence, the correct state must

  5389   // be set in order for the Safepoint code to deal with it correctly.

  5390   thread->set_thread_state(_thread_in_vm);

  5391   // Must do this before initialize_thread_local_storage

  5392   thread->record_stack_base_and_size();

  5394   thread->initialize_thread_local_storage();

  5396   if (!os::create_attached_thread(thread)) {

  5397     delete thread;

  5398     return JNI_ERR;

  5399   }

  5400   // Enable stack overflow checks

  5401   thread->create_stack_guard_pages();

  5403   thread->initialize_tlab();

  5405   thread->cache_global_variables();

  5407   // Crucial that we do not have a safepoint check for this thread, since it has

  5408   // not been added to the Thread list yet.

  5409   { Threads_lock->lock_without_safepoint_check();

  5410     // This must be inside this lock in order to get FullGCALot to work properly, i.e., to

  5411     // avoid this thread trying to do a GC before it is added to the thread-list

  5412     thread->set_active_handles(JNIHandleBlock::allocate_block());

  5413     Threads::add(thread, daemon);

  5414     Threads_lock->unlock();

  5415   }

  5416   // Create thread group and name info from attach arguments

  5417   oop group = NULL;

  5418   char* thread_name = NULL;

  5419   if (args != NULL && Threads::is_supported_jni_version(args->version)) {

  5420     group = JNIHandles::resolve(args->group);

  5421     thread_name = args->name; // may be NULL

  5422   }

  5423   if (group == NULL) group = Universe::main_thread_group();

  5425   // Create Java level thread object and attach it to this thread

  5426   bool attach_failed = false;

  5427   {

  5428     EXCEPTION_MARK;

  5429     HandleMark hm(THREAD);

  5430     Handle thread_group(THREAD, group);

  5431     thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);

  5432     if (HAS_PENDING_EXCEPTION) {

  5433       CLEAR_PENDING_EXCEPTION;

  5434       // cleanup outside the handle mark.

  5435       attach_failed = true;

  5436     }

  5437   }

  5439   if (attach_failed) {

  5440     // Added missing cleanup

  5441     thread->cleanup_failed_attach_current_thread();

  5442     return JNI_ERR;

  5443   }

  5445   // mark the thread as no longer attaching

  5446   // this uses a fence to push the change through so we don't have

  5447   // to regrab the threads_lock

  5448   thread->set_done_attaching_via_jni();

  5450   // Set java thread status.

  5451   java_lang_Thread::set_thread_status(thread->threadObj(),

  5452               java_lang_Thread::RUNNABLE);

  5454   // Notify the debugger

  5455   if (JvmtiExport::should_post_thread_life()) {

  5456     JvmtiExport::post_thread_start(thread);

  5457   }

  5459   EventThreadStart event;

  5460   if (event.should_commit()) {

  5461     event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));

  5462     event.commit();

  5463   }

  5465   *(JNIEnv**)penv = thread->jni_environment();

  5467   // Now leaving the VM, so change thread_state. This is normally automatically taken care

  5468   // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by

  5469   // using ThreadStateTransition::transition, we do a callback to the safepoint code if

  5470   // needed.

  5472   ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);

  5474   // Perform any platform dependent FPU setup

  5475   os::setup_fpu();

  5477   return JNI_OK;

  5478 }

  5481 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {

  5482 #ifndef USDT2

  5483   DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);

  5484 #else /* USDT2 */

  5485   HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(

  5486                                         vm, penv, _args);

  5487 #endif /* USDT2 */

  5488   if (!vm_created) {

  5489 #ifndef USDT2

  5490     DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);

  5491 #else /* USDT2 */

  5492   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(

  5493                                          (uint32_t) JNI_ERR);

  5494 #endif /* USDT2 */

  5495     return JNI_ERR;

  5496   }

  5498   JNIWrapper("AttachCurrentThread");

  5499   jint ret = attach_current_thread(vm, penv, _args, false);

  5500 #ifndef USDT2

  5501   DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);

  5502 #else /* USDT2 */

  5503   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(

  5504                                          ret);

  5505 #endif /* USDT2 */

  5506   return ret;

  5507 }

  5510 jint JNICALL jni_DetachCurrentThread(JavaVM *vm)  {

  5511 #ifndef USDT2

  5512   DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);

  5513 #else /* USDT2 */

  5514   HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(

  5515                                         vm);

  5516 #endif /* USDT2 */

  5517   VM_Exit::block_if_vm_exited();

  5519   JNIWrapper("DetachCurrentThread");

  5521   // If the thread has been deattacted the operations is a no-op

  5522   if (ThreadLocalStorage::thread() == NULL) {

  5523 #ifndef USDT2

  5524     DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);

  5525 #else /* USDT2 */

  5526   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(

  5527                                          JNI_OK);

  5528 #endif /* USDT2 */

  5529     return JNI_OK;

  5530   }

  5532   JavaThread* thread = JavaThread::current();

  5533   if (thread->has_last_Java_frame()) {

  5534 #ifndef USDT2

  5535     DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);

  5536 #else /* USDT2 */

  5537   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(

  5538                                          (uint32_t) JNI_ERR);

  5539 #endif /* USDT2 */

  5540     // Can't detach a thread that's running java, that can't work.

  5541     return JNI_ERR;

  5542   }

  5544   // Safepoint support. Have to do call-back to safepoint code, if in the

  5545   // middel of a safepoint operation

  5546   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);

  5548   // XXX: Note that JavaThread::exit() call below removes the guards on the

  5549   // stack pages set up via enable_stack_{red,yellow}_zone() calls

  5550   // above in jni_AttachCurrentThread. Unfortunately, while the setting

  5551   // of the guards is visible in jni_AttachCurrentThread above,

  5552   // the removal of the guards is buried below in JavaThread::exit()

  5553   // here. The abstraction should be more symmetrically either exposed

  5554   // or hidden (e.g. it could probably be hidden in the same

  5555   // (platform-dependent) methods where we do alternate stack

  5556   // maintenance work?)

  5557   thread->exit(false, JavaThread::jni_detach);

  5558   delete thread;

  5560 #ifndef USDT2

  5561   DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);

  5562 #else /* USDT2 */

  5563   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(

  5564                                          JNI_OK);

  5565 #endif /* USDT2 */

  5566   return JNI_OK;

  5567 }

  5569 #ifndef USDT2

  5570 DT_RETURN_MARK_DECL(GetEnv, jint);

  5571 #else /* USDT2 */

  5572 DT_RETURN_MARK_DECL(GetEnv, jint

  5573                     , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));

  5574 #endif /* USDT2 */

  5576 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {

  5577 #ifndef USDT2

  5578   DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);

  5579 #else /* USDT2 */

  5580   HOTSPOT_JNI_GETENV_ENTRY(

  5581                            vm, penv, version);

  5582 #endif /* USDT2 */

  5583   jint ret = JNI_ERR;

  5584   DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);

  5586   if (!vm_created) {

  5587     *penv = NULL;

  5588     ret = JNI_EDETACHED;

  5589     return ret;

  5590   }

  5592   if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {

  5593     return ret;

  5594   }

  5596 #ifndef JVMPI_VERSION_1

  5597 // need these in order to be polite about older agents

  5598 #define JVMPI_VERSION_1   ((jint)0x10000001)

  5599 #define JVMPI_VERSION_1_1 ((jint)0x10000002)

  5600 #define JVMPI_VERSION_1_2 ((jint)0x10000003)

  5601 #endif // !JVMPI_VERSION_1

  5603   Thread* thread = ThreadLocalStorage::thread();

  5604   if (thread != NULL && thread->is_Java_thread()) {

  5605     if (Threads::is_supported_jni_version_including_1_1(version)) {

  5606       *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();

  5607       ret = JNI_OK;

  5608       return ret;

  5610     } else if (version == JVMPI_VERSION_1 ||

  5611                version == JVMPI_VERSION_1_1 ||

  5612                version == JVMPI_VERSION_1_2) {

  5613       tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");

  5614       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");

  5615       ret = JNI_EVERSION;

  5616       return ret;

  5617     } else if (JvmtiExport::is_jvmdi_version(version)) {

  5618       tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");

  5619       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");

  5620       ret = JNI_EVERSION;

  5621       return ret;

  5622     } else {

  5623       *penv = NULL;

  5624       ret = JNI_EVERSION;

  5625       return ret;

  5626     }

  5627   } else {

  5628     *penv = NULL;

  5629     ret = JNI_EDETACHED;

  5630     return ret;

  5631   }

  5632 }

  5635 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {

  5636 #ifndef USDT2

  5637   DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);

  5638 #else /* USDT2 */

  5639   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(

  5640                                                 vm, penv, _args);

  5641 #endif /* USDT2 */

  5642   if (!vm_created) {

  5643 #ifndef USDT2

  5644     DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);

  5645 #else /* USDT2 */

  5646   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(

  5647                                                  (uint32_t) JNI_ERR);

  5648 #endif /* USDT2 */

  5649     return JNI_ERR;

  5650   }

  5652   JNIWrapper("AttachCurrentThreadAsDaemon");

  5653   jint ret = attach_current_thread(vm, penv, _args, true);

  5654 #ifndef USDT2

  5655   DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);

  5656 #else /* USDT2 */

  5657   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(

  5658                                                  ret);

  5659 #endif /* USDT2 */

  5660   return ret;

  5661 }

  5664 } // End extern "C"

  5666 const struct JNIInvokeInterface_ jni_InvokeInterface = {

  5667     NULL,

  5668     NULL,

  5669     NULL,

  5671     jni_DestroyJavaVM,

  5672     jni_AttachCurrentThread,

  5673     jni_DetachCurrentThread,

  5674     jni_GetEnv,

  5675     jni_AttachCurrentThreadAsDaemon

  5676 };

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/prims/jni.cpp@89dcef434423

src/share/vm/prims/jni.cpp