jdk8-mips64-public/hotspot: src/share/vm/prims/jni.cpp@b985cbb00e68

8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

     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 "jfr/jfrEvents.hpp"

    36 #include "jfr/support/jfrThreadId.hpp"

    37 #include "utilities/macros.hpp"

    38 #include "utilities/ostream.hpp"

    39 #if INCLUDE_ALL_GCS

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

    41 #endif // INCLUDE_ALL_GCS

    42 #include "memory/allocation.hpp"

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

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

    45 #include "memory/oopFactory.hpp"

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

    47 #include "oops/instanceKlass.hpp"

    48 #include "oops/instanceOop.hpp"

    49 #include "oops/markOop.hpp"

    50 #include "oops/method.hpp"

    51 #include "oops/objArrayKlass.hpp"

    52 #include "oops/objArrayOop.hpp"

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

    54 #include "oops/symbol.hpp"

    55 #include "oops/typeArrayKlass.hpp"

    56 #include "oops/typeArrayOop.hpp"

    57 #include "prims/jni.h"

    58 #include "prims/jniCheck.hpp"

    59 #include "prims/jniExport.hpp"

    60 #include "prims/jniFastGetField.hpp"

    61 #include "prims/jvm.h"

    62 #include "prims/jvm_misc.hpp"

    63 #include "prims/jvmtiExport.hpp"

    64 #include "prims/jvmtiThreadState.hpp"

    65 #include "runtime/compilationPolicy.hpp"

    66 #include "runtime/fieldDescriptor.hpp"

    67 #include "runtime/fprofiler.hpp"

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

    69 #include "runtime/interfaceSupport.hpp"

    70 #include "runtime/java.hpp"

    71 #include "runtime/javaCalls.hpp"

    72 #include "runtime/jfieldIDWorkaround.hpp"

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

    74 #include "runtime/reflection.hpp"

    75 #include "runtime/sharedRuntime.hpp"

    76 #include "runtime/signature.hpp"

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

    78 #include "runtime/vm_operations.hpp"

    79 #include "services/memTracker.hpp"

    80 #include "services/runtimeService.hpp"

    81 #include "utilities/defaultStream.hpp"

    82 #include "utilities/dtrace.hpp"

    83 #include "utilities/events.hpp"

    84 #include "utilities/histogram.hpp"

    85 #ifdef TARGET_OS_FAMILY_linux

    86 # include "os_linux.inline.hpp"

    87 #endif

    88 #ifdef TARGET_OS_FAMILY_solaris

    89 # include "os_solaris.inline.hpp"

    90 #endif

    91 #ifdef TARGET_OS_FAMILY_windows

    92 # include "os_windows.inline.hpp"

    93 #endif

    94 #ifdef TARGET_OS_FAMILY_bsd

    95 # include "os_bsd.inline.hpp"

    96 #endif

    98 static jint CurrentVersion = JNI_VERSION_1_8;

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

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

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

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

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

   106 //

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

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

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

   110 // a reference to it).

   111 //

   112 // Example:

   113 // DT_RETURN_MARK_DECL(SomeFunc, int);

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

   115 //   int return_value = 0;

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

   117 //   foo(CHECK_0)

   118 //   return_value = 5;

   119 //   return return_value;

   120 // JNI_END

   121 #ifndef USDT2

   122 #define DT_RETURN_MARK_DECL(name, type)                                    \

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

   124   DTRACE_ONLY(                                                             \

   125     class DTraceReturnProbeMark_##name {                                   \

   126      public:                                                               \

   127       const type& _ret_ref;                                                \

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

   129       ~DTraceReturnProbeMark_##name() {                                    \

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

   131       }                                                                    \

   132     }                                                                      \

   133   )

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

   135 #define DT_VOID_RETURN_MARK_DECL(name)                                     \

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

   137   DTRACE_ONLY(                                                             \

   138     class DTraceReturnProbeMark_##name {                                   \

   139      public:                                                               \

   140       ~DTraceReturnProbeMark_##name() {                                    \

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

   142       }                                                                    \

   143     }                                                                      \

   144   )

   146 #else /* USDT2 */

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

   149   DTRACE_ONLY(                                                             \

   150     class DTraceReturnProbeMark_##name {                                   \

   151      public:                                                               \

   152       const type& _ret_ref;                                                \

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

   154       ~DTraceReturnProbeMark_##name() {                                    \

   155         probe;                                                             \

   156       }                                                                    \

   157     }                                                                      \

   158   )

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

   160 #define DT_VOID_RETURN_MARK_DECL(name, probe)                              \

   161   DTRACE_ONLY(                                                             \

   162     class DTraceReturnProbeMark_##name {                                   \

   163      public:                                                               \

   164       ~DTraceReturnProbeMark_##name() {                                    \

   165         probe;                                                             \

   166       }                                                                    \

   167     }                                                                      \

   168   )

   169 #endif /* USDT2 */

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

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

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

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

   175 #define DT_VOID_RETURN_MARK(name) \

   176   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )

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

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

   181 // different behavior for Float/Double

   182 #define FP_SELECT_Boolean(intcode, fpcode) intcode

   183 #define FP_SELECT_Byte(intcode, fpcode)    intcode

   184 #define FP_SELECT_Char(intcode, fpcode)    intcode

   185 #define FP_SELECT_Short(intcode, fpcode)   intcode

   186 #define FP_SELECT_Object(intcode, fpcode)  intcode

   187 #define FP_SELECT_Int(intcode, fpcode)     intcode

   188 #define FP_SELECT_Long(intcode, fpcode)    intcode

   189 #define FP_SELECT_Float(intcode, fpcode)   fpcode

   190 #define FP_SELECT_Double(intcode, fpcode)  fpcode

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

   192   FP_SELECT_##TypeName(intcode, fpcode)

   194 #define COMMA ,

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

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

   198 #ifndef USDT2

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

   200   FP_SELECT(TypeName, \

   201     DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )

   202 #else /* USDT2 */

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

   204   FP_SELECT(TypeName, \

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

   206 #endif /* USDT2 */

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

   208   FP_SELECT(TypeName, \

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

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

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

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

   216     uintptr_t as_uint = (uintptr_t) id;

   217     intptr_t offset = raw_instance_offset(id);

   218     if (is_checked_jfieldID(id)) {

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

   220         return false;

   221       }

   222     }

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

   224   } else {

   225     JNIid* result = (JNIid*) id;

   226 #ifdef ASSERT

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

   228 #else

   229     return result != NULL;

   230 #endif

   231   }

   232 }

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

   236   if (offset <= small_offset_mask) {

   237     Klass* field_klass = k;

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

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

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

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

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

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

   244       super_klass = field_klass->super();

   245     }

   246     debug_only(No_Safepoint_Verifier nosafepoint;)

   247     uintptr_t klass_hash = field_klass->identity_hash();

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

   249   } else {

   250 #if 0

   251     #ifndef PRODUCT

   252     {

   253       ResourceMark rm;

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

   255     }

   256     #endif

   257 #endif

   258     return 0;

   259   }

   260 }

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

   263   uintptr_t as_uint = (uintptr_t) id;

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

   265   do {

   266     debug_only(No_Safepoint_Verifier nosafepoint;)

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

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

   269       return true;

   270     k = k->super();

   271   } while (k != NULL);

   272   return false;

   273 }

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

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

   277   uintptr_t as_uint = (uintptr_t) id;

   278   intptr_t offset = raw_instance_offset(id);

   279   if (VerifyJNIFields) {

   280     if (is_checked_jfieldID(id)) {

   281       guarantee(klass_hash_ok(k, id),

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

   283     } else {

   284 #if 0

   285       #ifndef PRODUCT

   286       if (Verbose) {

   287   ResourceMark rm;

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

   289       }

   290       #endif

   291 #endif

   292     }

   293   }

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

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

   296 }

   298 // Wrapper to trace JNI functions

   300 #ifdef ASSERT

   301   Histogram* JNIHistogram;

   302   static volatile jint JNIHistogram_lock = 0;

   304   class JNITraceWrapper : public StackObj {

   305    public:

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

   307       if (TraceJNICalls) {

   308         va_list ap;

   309         va_start(ap, format);

   310         tty->print("JNI ");

   311         tty->vprint_cr(format, ap);

   312         va_end(ap);

   313       }

   314     }

   315   };

   317   class JNIHistogramElement : public HistogramElement {

   318     public:

   319      JNIHistogramElement(const char* name);

   320   };

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

   323     _name = elementName;

   324     uintx count = 0;

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

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

   328         count +=1;

   329         if ( (WarnOnStalledSpinLock > 0)

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

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

   332         }

   333       }

   334      }

   337     if(JNIHistogram == NULL)

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

   340     JNIHistogram->add_element(this);

   341     Atomic::dec(&JNIHistogram_lock);

   342   }

   344   #define JNICountWrapper(arg)                                     \

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

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

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

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

   349 #else

   350   #define JNIWrapper(arg)

   351 #endif

   354 // Implementation of JNI entries

   356 #ifndef USDT2

   357 DT_RETURN_MARK_DECL(DefineClass, jclass);

   358 #else /* USDT2 */

   359 DT_RETURN_MARK_DECL(DefineClass, jclass

   360                     , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));

   361 #endif /* USDT2 */

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

   364                                   const jbyte *buf, jsize bufLen))

   365   JNIWrapper("DefineClass");

   367 #ifndef USDT2

   368   DTRACE_PROBE5(hotspot_jni, DefineClass__entry,

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

   370 #else /* USDT2 */

   371   HOTSPOT_JNI_DEFINECLASS_ENTRY(

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

   373 #endif /* USDT2 */

   374   jclass cls = NULL;

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

   377   TempNewSymbol class_name = NULL;

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

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

   380   if (name != NULL) {

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

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

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

   384       // into the constant pool.

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

   386     }

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

   388   }

   389   ResourceMark rm(THREAD);

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

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

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

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

   395     // If not, increment the corresponding counter

   396     if (ObjectSynchronizer::

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

   398         ObjectSynchronizer::owner_self) {

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

   400     }

   401   }

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

   403                                                      Handle(), &st, true,

   404                                                      CHECK_NULL);

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

   407     trace_class_resolution(k);

   408   }

   410   cls = (jclass)JNIHandles::make_local(

   411     env, k->java_mirror());

   412   return cls;

   413 JNI_END

   417 static bool first_time_FindClass = true;

   419 #ifndef USDT2

   420 DT_RETURN_MARK_DECL(FindClass, jclass);

   421 #else /* USDT2 */

   422 DT_RETURN_MARK_DECL(FindClass, jclass

   423                     , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));

   424 #endif /* USDT2 */

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

   427   JNIWrapper("FindClass");

   428 #ifndef USDT2

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

   430 #else /* USDT2 */

   431   HOTSPOT_JNI_FINDCLASS_ENTRY(

   432                               env, (char *)name);

   433 #endif /* USDT2 */

   435   jclass result = NULL;

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

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

   439   bool first_time = first_time_FindClass;

   440   first_time_FindClass = false;

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

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

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

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

   446   }

   448   //%note jni_3

   449   Handle loader;

   450   Handle protection_domain;

   451   // Find calling class

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

   453   if (k.not_null()) {

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

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

   456     // in the correct class context.

   457     if (loader.is_null() &&

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

   459       JavaValue result(T_OBJECT);

   460       JavaCalls::call_static(&result, k,

   461                                       vmSymbols::getFromClass_name(),

   462                                       vmSymbols::void_class_signature(),

   463                                       thread);

   464       if (HAS_PENDING_EXCEPTION) {

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

   466         CLEAR_PENDING_EXCEPTION;

   467         THROW_HANDLE_0(ex);

   468       }

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

   470       loader = Handle(THREAD,

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

   472       protection_domain = Handle(THREAD,

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

   474     }

   475   } else {

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

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

   478   }

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

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

   482                                         protection_domain, true, thread);

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

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

   486   }

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

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

   490   // Controlled by flag DelayCompilationDuringStartup.

   491   if (first_time && !CompileTheWorld)

   492     CompilationPolicy::completed_vm_startup();

   494   return result;

   495 JNI_END

   497 #ifndef USDT2

   498 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);

   499 #else /* USDT2 */

   500 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID

   501                     , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));

   502 #endif /* USDT2 */

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

   505   JNIWrapper("FromReflectedMethod");

   506 #ifndef USDT2

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

   508 #else /* USDT2 */

   509   HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(

   510                                         env, method);

   511 #endif /* USDT2 */

   512   jmethodID ret = NULL;

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

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

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

   517   oop mirror     = NULL;

   518   int slot       = 0;

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

   521     mirror = java_lang_reflect_Constructor::clazz(reflected);

   522     slot   = java_lang_reflect_Constructor::slot(reflected);

   523   } else {

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

   525     mirror = java_lang_reflect_Method::clazz(reflected);

   526     slot   = java_lang_reflect_Method::slot(reflected);

   527   }

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

   530   KlassHandle k1(THREAD, k);

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

   532   k1()->initialize(CHECK_NULL);

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

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

   535   return ret;

   536 JNI_END

   538 #ifndef USDT2

   539 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);

   540 #else /* USDT2 */

   541 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID

   542                     , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));

   543 #endif /* USDT2 */

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

   546   JNIWrapper("FromReflectedField");

   547 #ifndef USDT2

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

   549 #else /* USDT2 */

   550   HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(

   551                                        env, field);

   552 #endif /* USDT2 */

   553   jfieldID ret = NULL;

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

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

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

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

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

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

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

   563   KlassHandle k1(THREAD, k);

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

   565   k1()->initialize(CHECK_NULL);

   567   // First check if this is a static field

   568   if (modifiers & JVM_ACC_STATIC) {

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

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

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

   572     debug_only(id->set_is_static_field_id();)

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

   574     ret = jfieldIDWorkaround::to_static_jfieldID(id);

   575     return ret;

   576   }

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

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

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

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

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

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

   584   return ret;

   585 JNI_END

   587 #ifndef USDT2

   588 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);

   589 #else /* USDT2 */

   590 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject

   591                     , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));

   592 #endif /* USDT2 */

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

   595   JNIWrapper("ToReflectedMethod");

   596 #ifndef USDT2

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

   598 #else /* USDT2 */

   599   HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(

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

   601 #endif /* USDT2 */

   602   jobject ret = NULL;

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

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

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

   607   oop reflection_method;

   608   if (m->is_initializer()) {

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

   610   } else {

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

   612   }

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

   614   return ret;

   615 JNI_END

   617 #ifndef USDT2

   618 DT_RETURN_MARK_DECL(GetSuperclass, jclass);

   619 #else /* USDT2 */

   620 DT_RETURN_MARK_DECL(GetSuperclass, jclass

   621                     , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));

   622 #endif /* USDT2 */

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

   625   JNIWrapper("GetSuperclass");

   626 #ifndef USDT2

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

   628 #else /* USDT2 */

   629   HOTSPOT_JNI_GETSUPERCLASS_ENTRY(

   630                                   env, sub);

   631 #endif /* USDT2 */

   632   jclass obj = NULL;

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

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

   636   // primitive classes return NULL

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

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

   640   // arrays return Object

   641   // interfaces return NULL

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

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

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

   646   // return mirror for superclass

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

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

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

   650                                  ? SystemDictionary::Object_klass()

   651                                  : k->super() ) );

   652   assert(super == super2,

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

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

   655   return obj;

   656 JNI_END

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

   659   JNIWrapper("IsSubclassOf");

   660 #ifndef USDT2

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

   662 #else /* USDT2 */

   663   HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(

   664                                      env, sub, super);

   665 #endif /* USDT2 */

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

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

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

   669       java_lang_Class::is_primitive(super_mirror)) {

   670     jboolean ret = (sub_mirror == super_mirror);

   671 #ifndef USDT2

   672     DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);

   673 #else /* USDT2 */

   674     HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(

   675                                         ret);

   676 #endif /* USDT2 */

   677     return ret;

   678   }

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

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

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

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

   683                    JNI_TRUE : JNI_FALSE;

   684 #ifndef USDT2

   685   DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);

   686 #else /* USDT2 */

   687   HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(

   688                                       ret);

   689 #endif /* USDT2 */

   690   return ret;

   691 JNI_END

   693 #ifndef USDT2

   694 DT_RETURN_MARK_DECL(Throw, jint);

   695 #else /* USDT2 */

   696 DT_RETURN_MARK_DECL(Throw, jint

   697                     , HOTSPOT_JNI_THROW_RETURN(_ret_ref));

   698 #endif /* USDT2 */

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

   701   JNIWrapper("Throw");

   702 #ifndef USDT2

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

   704 #else /* USDT2 */

   705   HOTSPOT_JNI_THROW_ENTRY(

   706  env, obj);

   707 #endif /* USDT2 */

   708   jint ret = JNI_OK;

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

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

   712   ShouldNotReachHere();

   713   return 0; // Mute compiler.

   714 JNI_END

   716 #ifndef USDT2

   717 DT_RETURN_MARK_DECL(ThrowNew, jint);

   718 #else /* USDT2 */

   719 DT_RETURN_MARK_DECL(ThrowNew, jint

   720                     , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));

   721 #endif /* USDT2 */

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

   724   JNIWrapper("ThrowNew");

   725 #ifndef USDT2

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

   727 #else /* USDT2 */

   728   HOTSPOT_JNI_THROWNEW_ENTRY(

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

   730 #endif /* USDT2 */

   731   jint ret = JNI_OK;

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

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

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

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

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

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

   739   ShouldNotReachHere();

   740   return 0; // Mute compiler.

   741 JNI_END

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

   745 // exception in ExceptionOccurred and ExceptionCheck calls, since

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

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

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

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

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

   751 // state transition.

   753 static void jni_check_async_exceptions(JavaThread *thread) {

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

   755   thread->check_and_handle_async_exceptions();

   756 }

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

   759   JNIWrapper("ExceptionOccurred");

   760 #ifndef USDT2

   761   DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);

   762 #else /* USDT2 */

   763   HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(

   764                                       env);

   765 #endif /* USDT2 */

   766   jni_check_async_exceptions(thread);

   767   oop exception = thread->pending_exception();

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

   769 #ifndef USDT2

   770   DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);

   771 #else /* USDT2 */

   772   HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(

   773                                        ret);

   774 #endif /* USDT2 */

   775   return ret;

   776 JNI_END

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

   780   JNIWrapper("ExceptionDescribe");

   781 #ifndef USDT2

   782   DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);

   783 #else /* USDT2 */

   784   HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(

   785                                       env);

   786 #endif /* USDT2 */

   787   if (thread->has_pending_exception()) {

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

   789     thread->clear_pending_exception();

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

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

   792     } else {

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

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

   795         ResourceMark rm(THREAD);

   796         jio_fprintf(defaultStream::error_stream(),

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

   798       }

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

   800         JavaValue result(T_VOID);

   801         JavaCalls::call_virtual(&result,

   802                                 ex,

   803                                 KlassHandle(THREAD,

   804                                   SystemDictionary::Throwable_klass()),

   805                                 vmSymbols::printStackTrace_name(),

   806                                 vmSymbols::void_method_signature(),

   807                                 THREAD);

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

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

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

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

   812         // is expected.

   813         CLEAR_PENDING_EXCEPTION;

   814       } else {

   815         ResourceMark rm(THREAD);

   816         jio_fprintf(defaultStream::error_stream(),

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

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

   819       }

   820     }

   821   }

   822 #ifndef USDT2

   823   DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);

   824 #else /* USDT2 */

   825   HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(

   826                                        );

   827 #endif /* USDT2 */

   828 JNI_END

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

   832   JNIWrapper("ExceptionClear");

   833 #ifndef USDT2

   834   DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);

   835 #else /* USDT2 */

   836   HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(

   837                                    env);

   838 #endif /* USDT2 */

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

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

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

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

   844     state->set_exception_caught();

   845   }

   846   thread->clear_pending_exception();

   847 #ifndef USDT2

   848   DTRACE_PROBE(hotspot_jni, ExceptionClear__return);

   849 #else /* USDT2 */

   850   HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(

   851                                     );

   852 #endif /* USDT2 */

   853 JNI_END

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

   857   JNIWrapper("FatalError");

   858 #ifndef USDT2

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

   860 #else /* USDT2 */

   861   HOTSPOT_JNI_FATALERROR_ENTRY(

   862                                env, (char *) msg);

   863 #endif /* USDT2 */

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

   865   thread->print_stack();

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

   867 JNI_END

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

   871   JNIWrapper("PushLocalFrame");

   872 #ifndef USDT2

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

   874 #else /* USDT2 */

   875   HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(

   876                                    env, capacity);

   877 #endif /* USDT2 */

   878   //%note jni_11

   879   if (capacity < 0 ||

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

   881 #ifndef USDT2

   882     DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);

   883 #else /* USDT2 */

   884     HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(

   885                                       (uint32_t)JNI_ERR);

   886 #endif /* USDT2 */

   887     return JNI_ERR;

   888   }

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

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

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

   892   new_handles->set_pop_frame_link(old_handles);

   893   thread->set_active_handles(new_handles);

   894   jint ret = JNI_OK;

   895 #ifndef USDT2

   896   DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);

   897 #else /* USDT2 */

   898   HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(

   899                                     ret);

   900 #endif /* USDT2 */

   901   return ret;

   902 JNI_END

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

   906   JNIWrapper("PopLocalFrame");

   907 #ifndef USDT2

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

   909 #else /* USDT2 */

   910   HOTSPOT_JNI_POPLOCALFRAME_ENTRY(

   911                                   env, result);

   912 #endif /* USDT2 */

   913   //%note jni_11

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

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

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

   917   if (new_handles != NULL) {

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

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

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

   921     // the release_block call will release the blocks.

   922     thread->set_active_handles(new_handles);

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

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

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

   926   }

   927 #ifndef USDT2

   928   DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);

   929 #else /* USDT2 */

   930   HOTSPOT_JNI_POPLOCALFRAME_RETURN(

   931                                    result);

   932 #endif /* USDT2 */

   933   return result;

   934 JNI_END

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

   938   JNIWrapper("NewGlobalRef");

   939 #ifndef USDT2

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

   941 #else /* USDT2 */

   942   HOTSPOT_JNI_NEWGLOBALREF_ENTRY(

   943                                  env, ref);

   944 #endif /* USDT2 */

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

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

   947 #ifndef USDT2

   948   DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);

   949 #else /* USDT2 */

   950   HOTSPOT_JNI_NEWGLOBALREF_RETURN(

   951                                   ret);

   952 #endif /* USDT2 */

   953   return ret;

   954 JNI_END

   956 // Must be JNI_ENTRY (with HandleMark)

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

   958   JNIWrapper("DeleteGlobalRef");

   959 #ifndef USDT2

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

   961 #else /* USDT2 */

   962   HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(

   963                                     env, ref);

   964 #endif /* USDT2 */

   965   JNIHandles::destroy_global(ref);

   966 #ifndef USDT2

   967   DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);

   968 #else /* USDT2 */

   969   HOTSPOT_JNI_DELETEGLOBALREF_RETURN(

   970                                      );

   971 #endif /* USDT2 */

   972 JNI_END

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

   975   JNIWrapper("DeleteLocalRef");

   976 #ifndef USDT2

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

   978 #else /* USDT2 */

   979   HOTSPOT_JNI_DELETELOCALREF_ENTRY(

   980                                    env, obj);

   981 #endif /* USDT2 */

   982   JNIHandles::destroy_local(obj);

   983 #ifndef USDT2

   984   DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);

   985 #else /* USDT2 */

   986   HOTSPOT_JNI_DELETELOCALREF_RETURN(

   987                                     );

   988 #endif /* USDT2 */

   989 JNI_END

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

   992   JNIWrapper("IsSameObject");

   993 #ifndef USDT2

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

   995 #else /* USDT2 */

   996   HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(

   997                                  env, r1, r2);

   998 #endif /* USDT2 */

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

  1000   oop b = JNIHandles::resolve(r2);

  1001   jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;

  1002 #ifndef USDT2

  1003   DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);

  1004 #else /* USDT2 */

  1005   HOTSPOT_JNI_ISSAMEOBJECT_RETURN(

  1006                                   ret);

  1007 #endif /* USDT2 */

  1008   return ret;

  1009 JNI_END

  1012 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))

  1013   JNIWrapper("NewLocalRef");

  1014 #ifndef USDT2

  1015   DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);

  1016 #else /* USDT2 */

  1017   HOTSPOT_JNI_NEWLOCALREF_ENTRY(

  1018                                 env, ref);

  1019 #endif /* USDT2 */

  1020   jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));

  1021 #ifndef USDT2

  1022   DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);

  1023 #else /* USDT2 */

  1024   HOTSPOT_JNI_NEWLOCALREF_RETURN(

  1025                                  ret);

  1026 #endif /* USDT2 */

  1027   return ret;

  1028 JNI_END

  1030 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))

  1031   JNIWrapper("EnsureLocalCapacity");

  1032 #ifndef USDT2

  1033   DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);

  1034 #else /* USDT2 */

  1035   HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(

  1036                                         env, capacity);

  1037 #endif /* USDT2 */

  1038   jint ret;

  1039   if (capacity >= 0 &&

  1040       ((MaxJNILocalCapacity <= 0) || (capacity <= MaxJNILocalCapacity))) {

  1041     ret = JNI_OK;

  1042   } else {

  1043     ret = JNI_ERR;

  1044   }

  1045 #ifndef USDT2

  1046   DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);

  1047 #else /* USDT2 */

  1048   HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(

  1049                                          ret);

  1050 #endif /* USDT2 */

  1051   return ret;

  1052 JNI_END

  1054 // Return the Handle Type

  1055 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))

  1056   JNIWrapper("GetObjectRefType");

  1057 #ifndef USDT2

  1058   DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);

  1059 #else /* USDT2 */

  1060   HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(

  1061                                      env, obj);

  1062 #endif /* USDT2 */

  1063   jobjectRefType ret;

  1064   if (JNIHandles::is_local_handle(thread, obj) ||

  1065       JNIHandles::is_frame_handle(thread, obj))

  1066     ret = JNILocalRefType;

  1067   else if (JNIHandles::is_global_handle(obj))

  1068     ret = JNIGlobalRefType;

  1069   else if (JNIHandles::is_weak_global_handle(obj))

  1070     ret = JNIWeakGlobalRefType;

  1071   else

  1072     ret = JNIInvalidRefType;

  1073 #ifndef USDT2

  1074   DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);

  1075 #else /* USDT2 */

  1076   HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(

  1077                                       (void *) ret);

  1078 #endif /* USDT2 */

  1079   return ret;

  1080 JNI_END

  1083 class JNI_ArgumentPusher : public SignatureIterator {

  1084  protected:

  1085   JavaCallArguments*  _arguments;

  1087   virtual void get_bool   () = 0;

  1088   virtual void get_char   () = 0;

  1089   virtual void get_short  () = 0;

  1090   virtual void get_byte   () = 0;

  1091   virtual void get_int    () = 0;

  1092   virtual void get_long   () = 0;

  1093   virtual void get_float  () = 0;

  1094   virtual void get_double () = 0;

  1095   virtual void get_object () = 0;

  1097   JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {

  1098     this->_return_type = T_ILLEGAL;

  1099     _arguments = NULL;

  1100   }

  1102  public:

  1103   virtual void iterate( uint64_t fingerprint ) = 0;

  1105   void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }

  1107   inline void do_bool()                     { if (!is_return_type()) get_bool();   }

  1108   inline void do_char()                     { if (!is_return_type()) get_char();   }

  1109   inline void do_short()                    { if (!is_return_type()) get_short();  }

  1110   inline void do_byte()                     { if (!is_return_type()) get_byte();   }

  1111   inline void do_int()                      { if (!is_return_type()) get_int();    }

  1112   inline void do_long()                     { if (!is_return_type()) get_long();   }

  1113   inline void do_float()                    { if (!is_return_type()) get_float();  }

  1114   inline void do_double()                   { if (!is_return_type()) get_double(); }

  1115   inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }

  1116   inline void do_array(int begin, int end)  { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array

  1117   inline void do_void()                     { }

  1119   JavaCallArguments* arguments()     { return _arguments; }

  1120   void push_receiver(Handle h)       { _arguments->push_oop(h); }

  1121 };

  1124 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {

  1125  protected:

  1126   va_list _ap;

  1128   inline void get_bool()   {

  1129     // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and

  1130     // 0 to JNI_FALSE.  Boolean return values from native are normalized the same in

  1131     // TemplateInterpreterGenerator::generate_result_handler_for and

  1132     // SharedRuntime::generate_native_wrapper.

  1133     jboolean b = va_arg(_ap, jint);

  1134     _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE));

  1135   }

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

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

  1138   inline void get_byte()   { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg

  1139   inline void get_int()    { _arguments->push_int(va_arg(_ap, jint)); }

  1141   // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests

  1143   inline void get_long()   { _arguments->push_long(va_arg(_ap, jlong)); }

  1144   inline void get_float()  { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg

  1145   inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }

  1146   inline void get_object() { _arguments->push_jobject(va_arg(_ap, jobject)); }

  1148   inline void set_ap(va_list rap) {

  1149 #ifdef va_copy

  1150     va_copy(_ap, rap);

  1151 #elif defined (__va_copy)

  1152     __va_copy(_ap, rap);

  1153 #else

  1154     _ap = rap;

  1155 #endif

  1156   }

  1158  public:

  1159   JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)

  1160        : JNI_ArgumentPusher(signature) {

  1161     set_ap(rap);

  1162   }

  1163   JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)

  1164       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {

  1165     set_ap(rap);

  1166   }

  1168   // Optimized path if we have the bitvector form of signature

  1169   void iterate( uint64_t fingerprint ) {

  1170     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments

  1171     else {

  1172       _return_type = (BasicType)((fingerprint >> static_feature_size) &

  1173                                   result_feature_mask);

  1175       assert(fingerprint, "Fingerprint should not be 0");

  1176       fingerprint = fingerprint >> (static_feature_size + result_feature_size);

  1177       while ( 1 ) {

  1178         switch ( fingerprint & parameter_feature_mask ) {

  1179           case bool_parm:

  1180             get_bool();

  1181             break;

  1182           case char_parm:

  1183             get_char();

  1184             break;

  1185           case short_parm:

  1186             get_short();

  1187             break;

  1188           case byte_parm:

  1189             get_byte();

  1190             break;

  1191           case int_parm:

  1192             get_int();

  1193             break;

  1194           case obj_parm:

  1195             get_object();

  1196             break;

  1197           case long_parm:

  1198             get_long();

  1199             break;

  1200           case float_parm:

  1201             get_float();

  1202             break;

  1203           case double_parm:

  1204             get_double();

  1205             break;

  1206           case done_parm:

  1207             return;

  1208             break;

  1209           default:

  1210             ShouldNotReachHere();

  1211             break;

  1212         }

  1213         fingerprint >>= parameter_feature_size;

  1214       }

  1215     }

  1216   }

  1217 };

  1220 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {

  1221  protected:

  1222   const jvalue *_ap;

  1224   inline void get_bool()   {

  1225     // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and

  1226     // 0 to JNI_FALSE.  Boolean return values from native are normalized the same in

  1227     // TemplateInterpreterGenerator::generate_result_handler_for and

  1228     // SharedRuntime::generate_native_wrapper.

  1229     jboolean b = (_ap++)->z;

  1230     _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE));

  1231   }

  1232   inline void get_char()   { _arguments->push_int((jint)(_ap++)->c); }

  1233   inline void get_short()  { _arguments->push_int((jint)(_ap++)->s); }

  1234   inline void get_byte()   { _arguments->push_int((jint)(_ap++)->b); }

  1235   inline void get_int()    { _arguments->push_int((jint)(_ap++)->i); }

  1237   inline void get_long()   { _arguments->push_long((_ap++)->j);  }

  1238   inline void get_float()  { _arguments->push_float((_ap++)->f); }

  1239   inline void get_double() { _arguments->push_double((_ap++)->d);}

  1240   inline void get_object() { _arguments->push_jobject((_ap++)->l); }

  1242   inline void set_ap(const jvalue *rap) { _ap = rap; }

  1244  public:

  1245   JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)

  1246        : JNI_ArgumentPusher(signature) {

  1247     set_ap(rap);

  1248   }

  1249   JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)

  1250       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {

  1251     set_ap(rap);

  1252   }

  1254   // Optimized path if we have the bitvector form of signature

  1255   void iterate( uint64_t fingerprint ) {

  1256     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments

  1257     else {

  1258       _return_type = (BasicType)((fingerprint >> static_feature_size) &

  1259                                   result_feature_mask);

  1260       assert(fingerprint, "Fingerprint should not be 0");

  1261       fingerprint = fingerprint >> (static_feature_size + result_feature_size);

  1262       while ( 1 ) {

  1263         switch ( fingerprint & parameter_feature_mask ) {

  1264           case bool_parm:

  1265             get_bool();

  1266             break;

  1267           case char_parm:

  1268             get_char();

  1269             break;

  1270           case short_parm:

  1271             get_short();

  1272             break;

  1273           case byte_parm:

  1274             get_byte();

  1275             break;

  1276           case int_parm:

  1277             get_int();

  1278             break;

  1279           case obj_parm:

  1280             get_object();

  1281             break;

  1282           case long_parm:

  1283             get_long();

  1284             break;

  1285           case float_parm:

  1286             get_float();

  1287             break;

  1288           case double_parm:

  1289             get_double();

  1290             break;

  1291           case done_parm:

  1292             return;

  1293             break;

  1294           default:

  1295             ShouldNotReachHere();

  1296             break;

  1297         }

  1298         fingerprint >>= parameter_feature_size;

  1299       }

  1300     }

  1301   }

  1302 };

  1305 enum JNICallType {

  1306   JNI_STATIC,

  1307   JNI_VIRTUAL,

  1308   JNI_NONVIRTUAL

  1309 };

  1313 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {

  1314   methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));

  1316   // Create object to hold arguments for the JavaCall, and associate it with

  1317   // the jni parser

  1318   ResourceMark rm(THREAD);

  1319   int number_of_parameters = method->size_of_parameters();

  1320   JavaCallArguments java_args(number_of_parameters);

  1321   args->set_java_argument_object(&java_args);

  1323   assert(method->is_static(), "method should be static");

  1325   // Fill out JavaCallArguments object

  1326   args->iterate( Fingerprinter(method).fingerprint() );

  1327   // Initialize result type

  1328   result->set_type(args->get_ret_type());

  1330   // Invoke the method. Result is returned as oop.

  1331   JavaCalls::call(result, method, &java_args, CHECK);

  1333   // Convert result

  1334   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {

  1335     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));

  1336   }

  1337 }

  1340 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {

  1341   oop recv = JNIHandles::resolve(receiver);

  1342   if (recv == NULL) {

  1343     THROW(vmSymbols::java_lang_NullPointerException());

  1344   }

  1345   Handle h_recv(THREAD, recv);

  1347   int number_of_parameters;

  1348   Method* selected_method;

  1349   {

  1350     Method* m = Method::resolve_jmethod_id(method_id);

  1351     number_of_parameters = m->size_of_parameters();

  1352     Klass* holder = m->method_holder();

  1353     if (call_type != JNI_VIRTUAL) {

  1354         selected_method = m;

  1355     } else if (!m->has_itable_index()) {

  1356       // non-interface call -- for that little speed boost, don't handlize

  1357       debug_only(No_Safepoint_Verifier nosafepoint;)

  1358       // jni_GetMethodID makes sure class is linked and initialized

  1359       // so m should have a valid vtable index.

  1360       assert(m->valid_vtable_index(), "no valid vtable index");

  1361       int vtbl_index = m->vtable_index();

  1362       if (vtbl_index != Method::nonvirtual_vtable_index) {

  1363         Klass* k = h_recv->klass();

  1364         // k might be an arrayKlassOop but all vtables start at

  1365         // the same place. The cast is to avoid virtual call and assertion.

  1366         InstanceKlass *ik = (InstanceKlass*)k;

  1367         selected_method = ik->method_at_vtable(vtbl_index);

  1368       } else {

  1369         // final method

  1370         selected_method = m;

  1371       }

  1372     } else {

  1373       // interface call

  1374       KlassHandle h_holder(THREAD, holder);

  1376       int itbl_index = m->itable_index();

  1377       Klass* k = h_recv->klass();

  1378       selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);

  1379     }

  1380   }

  1382   methodHandle method(THREAD, selected_method);

  1384   // Create object to hold arguments for the JavaCall, and associate it with

  1385   // the jni parser

  1386   ResourceMark rm(THREAD);

  1387   JavaCallArguments java_args(number_of_parameters);

  1388   args->set_java_argument_object(&java_args);

  1390   // handle arguments

  1391   assert(!method->is_static(), "method should not be static");

  1392   args->push_receiver(h_recv); // Push jobject handle

  1394   // Fill out JavaCallArguments object

  1395   args->iterate( Fingerprinter(method).fingerprint() );

  1396   // Initialize result type

  1397   result->set_type(args->get_ret_type());

  1399   // Invoke the method. Result is returned as oop.

  1400   JavaCalls::call(result, method, &java_args, CHECK);

  1402   // Convert result

  1403   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {

  1404     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));

  1405   }

  1406 }

  1409 static instanceOop alloc_object(jclass clazz, TRAPS) {

  1410   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  1411   k()->check_valid_for_instantiation(false, CHECK_NULL);

  1412   InstanceKlass::cast(k())->initialize(CHECK_NULL);

  1413   instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);

  1414   return ih;

  1415 }

  1417 #ifndef USDT2

  1418 DT_RETURN_MARK_DECL(AllocObject, jobject);

  1419 #else /* USDT2 */

  1420 DT_RETURN_MARK_DECL(AllocObject, jobject

  1421                     , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));

  1422 #endif /* USDT2 */

  1424 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))

  1425   JNIWrapper("AllocObject");

  1427 #ifndef USDT2

  1428   DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);

  1429 #else /* USDT2 */

  1430   HOTSPOT_JNI_ALLOCOBJECT_ENTRY(

  1431                                 env, clazz);

  1432 #endif /* USDT2 */

  1433   jobject ret = NULL;

  1434   DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);

  1436   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1437   ret = JNIHandles::make_local(env, i);

  1438   return ret;

  1439 JNI_END

  1441 #ifndef USDT2

  1442 DT_RETURN_MARK_DECL(NewObjectA, jobject);

  1443 #else /* USDT2 */

  1444 DT_RETURN_MARK_DECL(NewObjectA, jobject

  1445                     , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));

  1446 #endif /* USDT2 */

  1448 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))

  1449   JNIWrapper("NewObjectA");

  1450 #ifndef USDT2

  1451   DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);

  1452 #else /* USDT2 */

  1453   HOTSPOT_JNI_NEWOBJECTA_ENTRY(

  1454                                env, clazz, (uintptr_t) methodID);

  1455 #endif /* USDT2 */

  1456   jobject obj = NULL;

  1457   DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);

  1459   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1460   obj = JNIHandles::make_local(env, i);

  1461   JavaValue jvalue(T_VOID);

  1462   JNI_ArgumentPusherArray ap(methodID, args);

  1463   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);

  1464   return obj;

  1465 JNI_END

  1467 #ifndef USDT2

  1468 DT_RETURN_MARK_DECL(NewObjectV, jobject);

  1469 #else /* USDT2 */

  1470 DT_RETURN_MARK_DECL(NewObjectV, jobject

  1471                     , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));

  1472 #endif /* USDT2 */

  1474 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))

  1475   JNIWrapper("NewObjectV");

  1476 #ifndef USDT2

  1477   DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);

  1478 #else /* USDT2 */

  1479   HOTSPOT_JNI_NEWOBJECTV_ENTRY(

  1480                                env, clazz, (uintptr_t) methodID);

  1481 #endif /* USDT2 */

  1482   jobject obj = NULL;

  1483   DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);

  1485   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1486   obj = JNIHandles::make_local(env, i);

  1487   JavaValue jvalue(T_VOID);

  1488   JNI_ArgumentPusherVaArg ap(methodID, args);

  1489   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);

  1490   return obj;

  1491 JNI_END

  1493 #ifndef USDT2

  1494 DT_RETURN_MARK_DECL(NewObject, jobject);

  1495 #else /* USDT2 */

  1496 DT_RETURN_MARK_DECL(NewObject, jobject

  1497                     , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));

  1498 #endif /* USDT2 */

  1500 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))

  1501   JNIWrapper("NewObject");

  1502 #ifndef USDT2

  1503   DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);

  1504 #else /* USDT2 */

  1505   HOTSPOT_JNI_NEWOBJECT_ENTRY(

  1506                               env, clazz, (uintptr_t) methodID);

  1507 #endif /* USDT2 */

  1508   jobject obj = NULL;

  1509   DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);

  1511   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1512   obj = JNIHandles::make_local(env, i);

  1513   va_list args;

  1514   va_start(args, methodID);

  1515   JavaValue jvalue(T_VOID);

  1516   JNI_ArgumentPusherVaArg ap(methodID, args);

  1517   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);

  1518   va_end(args);

  1519   return obj;

  1520 JNI_END

  1523 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))

  1524   JNIWrapper("GetObjectClass");

  1525 #ifndef USDT2

  1526   DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);

  1527 #else /* USDT2 */

  1528   HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(

  1529                                    env, obj);

  1530 #endif /* USDT2 */

  1531   Klass* k = JNIHandles::resolve_non_null(obj)->klass();

  1532   jclass ret =

  1533     (jclass) JNIHandles::make_local(env, k->java_mirror());

  1534 #ifndef USDT2

  1535   DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);

  1536 #else /* USDT2 */

  1537   HOTSPOT_JNI_GETOBJECTCLASS_RETURN(

  1538                                     ret);

  1539 #endif /* USDT2 */

  1540   return ret;

  1541 JNI_END

  1543 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))

  1544   JNIWrapper("IsInstanceOf");

  1545 #ifndef USDT2

  1546   DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);

  1547 #else /* USDT2 */

  1548   HOTSPOT_JNI_ISINSTANCEOF_ENTRY(

  1549                                  env, obj, clazz);

  1550 #endif /* USDT2 */

  1551   jboolean ret = JNI_TRUE;

  1552   if (obj != NULL) {

  1553     ret = JNI_FALSE;

  1554     Klass* k = java_lang_Class::as_Klass(

  1555       JNIHandles::resolve_non_null(clazz));

  1556     if (k != NULL) {

  1557       ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;

  1558     }

  1559   }

  1560 #ifndef USDT2

  1561   DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);

  1562 #else /* USDT2 */

  1563   HOTSPOT_JNI_ISINSTANCEOF_RETURN(

  1564                                   ret);

  1565 #endif /* USDT2 */

  1566   return ret;

  1567 JNI_END

  1570 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,

  1571                                const char *sig, bool is_static, TRAPS) {

  1572   // %%%% This code should probably just call into a method in the LinkResolver

  1573   //

  1574   // The class should have been loaded (we have an instance of the class

  1575   // passed in) so the method and signature should already be in the symbol

  1576   // table.  If they're not there, the method doesn't exist.

  1577   const char *name_to_probe = (name_str == NULL)

  1578                         ? vmSymbols::object_initializer_name()->as_C_string()

  1579                         : name_str;

  1580   TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));

  1581   TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));

  1583   if (name == NULL || signature == NULL) {

  1584     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);

  1585   }

  1587   // Throw a NoSuchMethodError exception if we have an instance of a

  1588   // primitive java.lang.Class

  1589   if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {

  1590     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);

  1591   }

  1593   KlassHandle klass(THREAD,

  1594                java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  1596   // Make sure class is linked and initialized before handing id's out to

  1597   // Method*s.

  1598   klass()->initialize(CHECK_NULL);

  1600   Method* m;

  1601   if (name == vmSymbols::object_initializer_name() ||

  1602       name == vmSymbols::class_initializer_name()) {

  1603     // Never search superclasses for constructors

  1604     if (klass->oop_is_instance()) {

  1605       m = InstanceKlass::cast(klass())->find_method(name, signature);

  1606     } else {

  1607       m = NULL;

  1608     }

  1609   } else {

  1610     m = klass->lookup_method(name, signature);

  1611     if (m == NULL &&  klass->oop_is_instance()) {

  1612       m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);

  1613     }

  1614   }

  1615   if (m == NULL || (m->is_static() != is_static)) {

  1616     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);

  1617   }

  1618   return m->jmethod_id();

  1619 }

  1622 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,

  1623           const char *name, const char *sig))

  1624   JNIWrapper("GetMethodID");

  1625 #ifndef USDT2

  1626   DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);

  1627 #else /* USDT2 */

  1628   HOTSPOT_JNI_GETMETHODID_ENTRY(

  1629                                 env, clazz, (char *) name, (char *) sig);

  1630 #endif /* USDT2 */

  1631   jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);

  1632 #ifndef USDT2

  1633   DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);

  1634 #else /* USDT2 */

  1635   HOTSPOT_JNI_GETMETHODID_RETURN(

  1636                                  (uintptr_t) ret);

  1637 #endif /* USDT2 */

  1638   return ret;

  1639 JNI_END

  1642 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,

  1643           const char *name, const char *sig))

  1644   JNIWrapper("GetStaticMethodID");

  1645 #ifndef USDT2

  1646   DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);

  1647 #else /* USDT2 */

  1648   HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(

  1649                                       env, (char *) clazz, (char *) name, (char *)sig);

  1650 #endif /* USDT2 */

  1651   jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);

  1652 #ifndef USDT2

  1653   DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);

  1654 #else /* USDT2 */

  1655   HOTSPOT_JNI_GETSTATICMETHODID_RETURN(

  1656                                        (uintptr_t) ret);

  1657 #endif /* USDT2 */

  1658   return ret;

  1659 JNI_END

  1663 //

  1664 // Calling Methods

  1665 //

  1667 #ifndef USDT2

  1668 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \

  1669 \

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

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

  1672   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\

  1673 \

  1674 JNI_ENTRY(ResultType, \

  1675           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \

  1676   JNIWrapper("Call" XSTR(Result) "Method"); \

  1677 \

  1678   DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \

  1679   ResultType ret = 0;\

  1680   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \

  1681                      (const ResultType&)ret);\

  1682 \

  1683   va_list args; \

  1684   va_start(args, methodID); \

  1685   JavaValue jvalue(Tag); \

  1686   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1687   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1688   va_end(args); \

  1689   ret = jvalue.get_##ResultType(); \

  1690   return ret;\

  1691 JNI_END \

  1692 \

  1693 \

  1694 JNI_ENTRY(ResultType, \

  1695           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \

  1696   JNIWrapper("Call" XSTR(Result) "MethodV"); \

  1697 \

  1698   DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \

  1699   ResultType ret = 0;\

  1700   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \

  1701                      (const ResultType&)ret);\

  1702 \

  1703   JavaValue jvalue(Tag); \

  1704   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1705   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1706   ret = jvalue.get_##ResultType(); \

  1707   return ret;\

  1708 JNI_END \

  1709 \

  1710 \

  1711 JNI_ENTRY(ResultType, \

  1712           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \

  1713   JNIWrapper("Call" XSTR(Result) "MethodA"); \

  1714   DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \

  1715   ResultType ret = 0;\

  1716   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \

  1717                      (const ResultType&)ret);\

  1718 \

  1719   JavaValue jvalue(Tag); \

  1720   JNI_ArgumentPusherArray ap(methodID, args); \

  1721   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1722   ret = jvalue.get_##ResultType(); \

  1723   return ret;\

  1724 JNI_END

  1726 // the runtime type of subword integral basic types is integer

  1727 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)

  1728 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE)

  1729 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR)

  1730 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT)

  1732 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT)

  1733 DEFINE_CALLMETHOD(jint,     Int,     T_INT)

  1734 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG)

  1735 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT)

  1736 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE)

  1738 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);

  1739 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);

  1740 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);

  1742 #else /* USDT2 */

  1744 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \

  1745                           , EntryProbe, ReturnProbe)    \

  1746 \

  1747   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \

  1748                           , ReturnProbe);                          \

  1749 \

  1750 JNI_ENTRY(ResultType, \

  1751           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \

  1752   JNIWrapper("Call" XSTR(Result) "Method"); \

  1753 \

  1754   EntryProbe; \

  1755   ResultType ret = 0;\

  1756   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \

  1757                      (const ResultType&)ret);\

  1758 \

  1759   va_list args; \

  1760   va_start(args, methodID); \

  1761   JavaValue jvalue(Tag); \

  1762   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1763   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1764   va_end(args); \

  1765   ret = jvalue.get_##ResultType(); \

  1766   return ret;\

  1767 JNI_END

  1769 // the runtime type of subword integral basic types is integer

  1770 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN

  1771                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1772                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))

  1773 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE

  1774                   , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1775                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))

  1776 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR

  1777                   , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1778                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))

  1779 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT

  1780                   , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1781                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))

  1783 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT

  1784                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1785                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))

  1786 DEFINE_CALLMETHOD(jint,     Int,     T_INT,

  1787                   HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1788                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))

  1789 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG

  1790                   , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1791                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))

  1792 // Float and double probes don't return value because dtrace doesn't currently support it

  1793 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT

  1794                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1795                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())

  1796 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE

  1797                   , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1798                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())

  1800 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \

  1801                           , EntryProbe, ReturnProbe)    \

  1802 \

  1803   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \

  1804                           , ReturnProbe);                          \

  1805 \

  1806 JNI_ENTRY(ResultType, \

  1807           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \

  1808   JNIWrapper("Call" XSTR(Result) "MethodV"); \

  1809 \

  1810   EntryProbe;\

  1811   ResultType ret = 0;\

  1812   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \

  1813                      (const ResultType&)ret);\

  1814 \

  1815   JavaValue jvalue(Tag); \

  1816   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1817   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1818   ret = jvalue.get_##ResultType(); \

  1819   return ret;\

  1820 JNI_END

  1822 // the runtime type of subword integral basic types is integer

  1823 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN

  1824                   , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1825                   HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref))

  1826 DEFINE_CALLMETHODV(jbyte,    Byte,    T_BYTE

  1827                   , HOTSPOT_JNI_CALLBYTEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1828                   HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref))

  1829 DEFINE_CALLMETHODV(jchar,    Char,    T_CHAR

  1830                   , HOTSPOT_JNI_CALLCHARMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1831                   HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref))

  1832 DEFINE_CALLMETHODV(jshort,   Short,   T_SHORT

  1833                   , HOTSPOT_JNI_CALLSHORTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1834                   HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref))

  1836 DEFINE_CALLMETHODV(jobject,  Object,  T_OBJECT

  1837                   , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1838                   HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref))

  1839 DEFINE_CALLMETHODV(jint,     Int,     T_INT,

  1840                   HOTSPOT_JNI_CALLINTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1841                   HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref))

  1842 DEFINE_CALLMETHODV(jlong,    Long,    T_LONG

  1843                   , HOTSPOT_JNI_CALLLONGMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1844                   HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref))

  1845 // Float and double probes don't return value because dtrace doesn't currently support it

  1846 DEFINE_CALLMETHODV(jfloat,   Float,   T_FLOAT

  1847                   , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1848                   HOTSPOT_JNI_CALLFLOATMETHODV_RETURN())

  1849 DEFINE_CALLMETHODV(jdouble,  Double,  T_DOUBLE

  1850                   , HOTSPOT_JNI_CALLDOUBLEMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1851                   HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN())

  1853 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \

  1854                           , EntryProbe, ReturnProbe)    \

  1855 \

  1856   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \

  1857                           , ReturnProbe);                          \

  1858 \

  1859 JNI_ENTRY(ResultType, \

  1860           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \

  1861   JNIWrapper("Call" XSTR(Result) "MethodA"); \

  1862   EntryProbe; \

  1863   ResultType ret = 0;\

  1864   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \

  1865                      (const ResultType&)ret);\

  1866 \

  1867   JavaValue jvalue(Tag); \

  1868   JNI_ArgumentPusherArray ap(methodID, args); \

  1869   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1870   ret = jvalue.get_##ResultType(); \

  1871   return ret;\

  1872 JNI_END

  1874 // the runtime type of subword integral basic types is integer

  1875 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN

  1876                   , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1877                   HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref))

  1878 DEFINE_CALLMETHODA(jbyte,    Byte,    T_BYTE

  1879                   , HOTSPOT_JNI_CALLBYTEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1880                   HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref))

  1881 DEFINE_CALLMETHODA(jchar,    Char,    T_CHAR

  1882                   , HOTSPOT_JNI_CALLCHARMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1883                   HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref))

  1884 DEFINE_CALLMETHODA(jshort,   Short,   T_SHORT

  1885                   , HOTSPOT_JNI_CALLSHORTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1886                   HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref))

  1888 DEFINE_CALLMETHODA(jobject,  Object,  T_OBJECT

  1889                   , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1890                   HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref))

  1891 DEFINE_CALLMETHODA(jint,     Int,     T_INT,

  1892                   HOTSPOT_JNI_CALLINTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1893                   HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref))

  1894 DEFINE_CALLMETHODA(jlong,    Long,    T_LONG

  1895                   , HOTSPOT_JNI_CALLLONGMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1896                   HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref))

  1897 // Float and double probes don't return value because dtrace doesn't currently support it

  1898 DEFINE_CALLMETHODA(jfloat,   Float,   T_FLOAT

  1899                   , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1900                   HOTSPOT_JNI_CALLFLOATMETHODA_RETURN())

  1901 DEFINE_CALLMETHODA(jdouble,  Double,  T_DOUBLE

  1902                   , HOTSPOT_JNI_CALLDOUBLEMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1903                   HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN())

  1905 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());

  1906 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());

  1907 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());

  1909 #endif /* USDT2 */

  1911 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))

  1912   JNIWrapper("CallVoidMethod");

  1913 #ifndef USDT2

  1914   DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);

  1915 #else /* USDT2 */

  1916   HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(

  1917                                    env, obj, (uintptr_t) methodID);

  1918 #endif /* USDT2 */

  1919   DT_VOID_RETURN_MARK(CallVoidMethod);

  1921   va_list args;

  1922   va_start(args, methodID);

  1923   JavaValue jvalue(T_VOID);

  1924   JNI_ArgumentPusherVaArg ap(methodID, args);

  1925   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);

  1926   va_end(args);

  1927 JNI_END

  1930 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))

  1931   JNIWrapper("CallVoidMethodV");

  1932 #ifndef USDT2

  1933   DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);

  1934 #else /* USDT2 */

  1935   HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(

  1936                                     env, obj, (uintptr_t) methodID);

  1937 #endif /* USDT2 */

  1938   DT_VOID_RETURN_MARK(CallVoidMethodV);

  1940   JavaValue jvalue(T_VOID);

  1941   JNI_ArgumentPusherVaArg ap(methodID, args);

  1942   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);

  1943 JNI_END

  1946 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))

  1947   JNIWrapper("CallVoidMethodA");

  1948 #ifndef USDT2

  1949   DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);

  1950 #else /* USDT2 */

  1951   HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(

  1952                                     env, obj, (uintptr_t) methodID);

  1953 #endif /* USDT2 */

  1954   DT_VOID_RETURN_MARK(CallVoidMethodA);

  1956   JavaValue jvalue(T_VOID);

  1957   JNI_ArgumentPusherArray ap(methodID, args);

  1958   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);

  1959 JNI_END

  1962 #ifndef USDT2

  1963 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \

  1964 \

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

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

  1967   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\

  1968 \

  1969 JNI_ENTRY(ResultType, \

  1970           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \

  1971   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \

  1972 \

  1973   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\

  1974   ResultType ret;\

  1975   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \

  1976                      (const ResultType&)ret);\

  1977 \

  1978   va_list args; \

  1979   va_start(args, methodID); \

  1980   JavaValue jvalue(Tag); \

  1981   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1982   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  1983   va_end(args); \

  1984   ret = jvalue.get_##ResultType(); \

  1985   return ret;\

  1986 JNI_END \

  1987 \

  1988 JNI_ENTRY(ResultType, \

  1989           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \

  1990   JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \

  1991   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\

  1992   ResultType ret;\

  1993   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \

  1994                      (const ResultType&)ret);\

  1995 \

  1996   JavaValue jvalue(Tag); \

  1997   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1998   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  1999   ret = jvalue.get_##ResultType(); \

  2000   return ret;\

  2001 JNI_END \

  2002 \

  2003 JNI_ENTRY(ResultType, \

  2004           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \

  2005   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \

  2006   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\

  2007   ResultType ret;\

  2008   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \

  2009                      (const ResultType&)ret);\

  2010 \

  2011   JavaValue jvalue(Tag); \

  2012   JNI_ArgumentPusherArray ap(methodID, args); \

  2013   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2014   ret = jvalue.get_##ResultType(); \

  2015   return ret;\

  2016 JNI_END

  2018 // the runtime type of subword integral basic types is integer

  2019 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)

  2020 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE)

  2021 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR)

  2022 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT)

  2024 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT)

  2025 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT)

  2026 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG)

  2027 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT)

  2028 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE)

  2031 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);

  2032 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);

  2033 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);

  2035 #else /* USDT2 */

  2037 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \

  2038                                     , EntryProbe, ReturnProbe)      \

  2039 \

  2040   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \

  2041                           , ReturnProbe);\

  2042 \

  2043 JNI_ENTRY(ResultType, \

  2044           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \

  2045   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \

  2046 \

  2047   EntryProbe;\

  2048   ResultType ret;\

  2049   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \

  2050                      (const ResultType&)ret);\

  2051 \

  2052   va_list args; \

  2053   va_start(args, methodID); \

  2054   JavaValue jvalue(Tag); \

  2055   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2056   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2057   va_end(args); \

  2058   ret = jvalue.get_##ResultType(); \

  2059   return ret;\

  2060 JNI_END

  2062 // the runtime type of subword integral basic types is integer

  2063 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN

  2064                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2065                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))

  2066 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE

  2067                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2068                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))

  2069 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR

  2070                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2071                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))

  2072 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT

  2073                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2074                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))

  2076 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT

  2077                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2078                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))

  2079 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT

  2080                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2081                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))

  2082 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG

  2083                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2084 // Float and double probes don't return value because dtrace doesn't currently support it

  2085                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))

  2086 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT

  2087                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2088                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())

  2089 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE

  2090                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2091                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())

  2093 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \

  2094                                     , EntryProbe, ReturnProbe)      \

  2095 \

  2096   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \

  2097                           , ReturnProbe);\

  2098 \

  2099 JNI_ENTRY(ResultType, \

  2100           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \

  2101   JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \

  2102 \

  2103   EntryProbe;\

  2104   ResultType ret;\

  2105   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \

  2106                      (const ResultType&)ret);\

  2107 \

  2108   JavaValue jvalue(Tag); \

  2109   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2110   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2111   ret = jvalue.get_##ResultType(); \

  2112   return ret;\

  2113 JNI_END

  2115 // the runtime type of subword integral basic types is integer

  2116 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN

  2117                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2118                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))

  2119 DEFINE_CALLNONVIRTUALMETHODV(jbyte,    Byte,    T_BYTE

  2120                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2121                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))

  2122 DEFINE_CALLNONVIRTUALMETHODV(jchar,    Char,    T_CHAR

  2123                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2124                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))

  2125 DEFINE_CALLNONVIRTUALMETHODV(jshort,   Short,   T_SHORT

  2126                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2127                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))

  2129 DEFINE_CALLNONVIRTUALMETHODV(jobject,  Object,  T_OBJECT

  2130                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2131                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))

  2132 DEFINE_CALLNONVIRTUALMETHODV(jint,     Int,     T_INT

  2133                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2134                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))

  2135 DEFINE_CALLNONVIRTUALMETHODV(jlong,    Long,    T_LONG

  2136                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2137 // Float and double probes don't return value because dtrace doesn't currently support it

  2138                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))

  2139 DEFINE_CALLNONVIRTUALMETHODV(jfloat,   Float,   T_FLOAT

  2140                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2141                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())

  2142 DEFINE_CALLNONVIRTUALMETHODV(jdouble,  Double,  T_DOUBLE

  2143                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2144                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())

  2146 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \

  2147                                     , EntryProbe, ReturnProbe)      \

  2148 \

  2149   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \

  2150                           , ReturnProbe);\

  2151 \

  2152 JNI_ENTRY(ResultType, \

  2153           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \

  2154   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \

  2155 \

  2156   EntryProbe;\

  2157   ResultType ret;\

  2158   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \

  2159                      (const ResultType&)ret);\

  2160 \

  2161   JavaValue jvalue(Tag); \

  2162   JNI_ArgumentPusherArray ap(methodID, args); \

  2163   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2164   ret = jvalue.get_##ResultType(); \

  2165   return ret;\

  2166 JNI_END

  2168 // the runtime type of subword integral basic types is integer

  2169 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN

  2170                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2171                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))

  2172 DEFINE_CALLNONVIRTUALMETHODA(jbyte,    Byte,    T_BYTE

  2173                             , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2174                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))

  2175 DEFINE_CALLNONVIRTUALMETHODA(jchar,    Char,    T_CHAR

  2176                             , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2177                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))

  2178 DEFINE_CALLNONVIRTUALMETHODA(jshort,   Short,   T_SHORT

  2179                             , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2180                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))

  2182 DEFINE_CALLNONVIRTUALMETHODA(jobject,  Object,  T_OBJECT

  2183                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2184                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))

  2185 DEFINE_CALLNONVIRTUALMETHODA(jint,     Int,     T_INT

  2186                             , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2187                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))

  2188 DEFINE_CALLNONVIRTUALMETHODA(jlong,    Long,    T_LONG

  2189                             , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2190 // Float and double probes don't return value because dtrace doesn't currently support it

  2191                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))

  2192 DEFINE_CALLNONVIRTUALMETHODA(jfloat,   Float,   T_FLOAT

  2193                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2194                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())

  2195 DEFINE_CALLNONVIRTUALMETHODA(jdouble,  Double,  T_DOUBLE

  2196                             , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2197                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())

  2199 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod

  2200                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());

  2201 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV

  2202                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());

  2203 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA

  2204                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());

  2205 #endif /* USDT2 */

  2207 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))

  2208   JNIWrapper("CallNonvirtualVoidMethod");

  2210 #ifndef USDT2

  2211   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,

  2212                env, obj, cls, methodID);

  2213 #else /* USDT2 */

  2214   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(

  2215                env, obj, cls, (uintptr_t) methodID);

  2216 #endif /* USDT2 */

  2217   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);

  2219   va_list args;

  2220   va_start(args, methodID);

  2221   JavaValue jvalue(T_VOID);

  2222   JNI_ArgumentPusherVaArg ap(methodID, args);

  2223   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);

  2224   va_end(args);

  2225 JNI_END

  2228 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))

  2229   JNIWrapper("CallNonvirtualVoidMethodV");

  2231 #ifndef USDT2

  2232   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,

  2233                env, obj, cls, methodID);

  2234 #else /* USDT2 */

  2235   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(

  2236                env, obj, cls, (uintptr_t) methodID);

  2237 #endif /* USDT2 */

  2238   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);

  2240   JavaValue jvalue(T_VOID);

  2241   JNI_ArgumentPusherVaArg ap(methodID, args);

  2242   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);

  2243 JNI_END

  2246 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))

  2247   JNIWrapper("CallNonvirtualVoidMethodA");

  2248 #ifndef USDT2

  2249   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,

  2250                 env, obj, cls, methodID);

  2251 #else /* USDT2 */

  2252   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(

  2253                 env, obj, cls, (uintptr_t) methodID);

  2254 #endif /* USDT2 */

  2255   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);

  2256   JavaValue jvalue(T_VOID);

  2257   JNI_ArgumentPusherArray ap(methodID, args);

  2258   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);

  2259 JNI_END

  2262 #ifndef USDT2

  2263 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \

  2264 \

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

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

  2267   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\

  2268 \

  2269 JNI_ENTRY(ResultType, \

  2270           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \

  2271   JNIWrapper("CallStatic" XSTR(Result) "Method"); \

  2272 \

  2273   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\

  2274   ResultType ret = 0;\

  2275   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \

  2276                      (const ResultType&)ret);\

  2277 \

  2278   va_list args; \

  2279   va_start(args, methodID); \

  2280   JavaValue jvalue(Tag); \

  2281   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2282   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2283   va_end(args); \

  2284   ret = jvalue.get_##ResultType(); \

  2285   return ret;\

  2286 JNI_END \

  2287 \

  2288 JNI_ENTRY(ResultType, \

  2289           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \

  2290   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \

  2291   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\

  2292   ResultType ret = 0;\

  2293   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \

  2294                      (const ResultType&)ret);\

  2295 \

  2296   JavaValue jvalue(Tag); \

  2297   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2298   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2299   ret = jvalue.get_##ResultType(); \

  2300   return ret;\

  2301 JNI_END \

  2302 \

  2303 JNI_ENTRY(ResultType, \

  2304           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \

  2305   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \

  2306   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\

  2307   ResultType ret = 0;\

  2308   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \

  2309                      (const ResultType&)ret);\

  2310 \

  2311   JavaValue jvalue(Tag); \

  2312   JNI_ArgumentPusherArray ap(methodID, args); \

  2313   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2314   ret = jvalue.get_##ResultType(); \

  2315   return ret;\

  2316 JNI_END

  2318 // the runtime type of subword integral basic types is integer

  2319 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)

  2320 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE)

  2321 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR)

  2322 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT)

  2324 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT)

  2325 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT)

  2326 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG)

  2327 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT)

  2328 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE)

  2331 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);

  2332 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);

  2333 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);

  2335 #else /* USDT2 */

  2337 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \

  2338                                 , EntryProbe, ResultProbe) \

  2339 \

  2340   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \

  2341                           , ResultProbe);                               \

  2342 \

  2343 JNI_ENTRY(ResultType, \

  2344           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \

  2345   JNIWrapper("CallStatic" XSTR(Result) "Method"); \

  2346 \

  2347   EntryProbe; \

  2348   ResultType ret = 0;\

  2349   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \

  2350                      (const ResultType&)ret);\

  2351 \

  2352   va_list args; \

  2353   va_start(args, methodID); \

  2354   JavaValue jvalue(Tag); \

  2355   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2356   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2357   va_end(args); \

  2358   ret = jvalue.get_##ResultType(); \

  2359   return ret;\

  2360 JNI_END

  2362 // the runtime type of subword integral basic types is integer

  2363 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN

  2364                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2365                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));

  2366 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE

  2367                         , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2368                         HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));

  2369 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR

  2370                         , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2371                         HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));

  2372 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT

  2373                         , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2374                         HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));

  2376 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT

  2377                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2378                         HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));

  2379 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT

  2380                         , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2381                         HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));

  2382 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG

  2383                         , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2384                         HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));

  2385 // Float and double probes don't return value because dtrace doesn't currently support it

  2386 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT

  2387                         , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2388                         HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());

  2389 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE

  2390                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2391                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());

  2393 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \

  2394                                 , EntryProbe, ResultProbe) \

  2395 \

  2396   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \

  2397                           , ResultProbe);                               \

  2398 \

  2399 JNI_ENTRY(ResultType, \

  2400           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \

  2401   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \

  2402 \

  2403   EntryProbe; \

  2404   ResultType ret = 0;\

  2405   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \

  2406                      (const ResultType&)ret);\

  2407 \

  2408   JavaValue jvalue(Tag); \

  2409   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2410   /* Make sure class is initialized before trying to invoke its method */ \

  2411   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \

  2412   k()->initialize(CHECK_0); \

  2413   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2414   va_end(args); \

  2415   ret = jvalue.get_##ResultType(); \

  2416   return ret;\

  2417 JNI_END

  2419 // the runtime type of subword integral basic types is integer

  2420 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN

  2421                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2422                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));

  2423 DEFINE_CALLSTATICMETHODV(jbyte,    Byte,    T_BYTE

  2424                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2425                         HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));

  2426 DEFINE_CALLSTATICMETHODV(jchar,    Char,    T_CHAR

  2427                         , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2428                         HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));

  2429 DEFINE_CALLSTATICMETHODV(jshort,   Short,   T_SHORT

  2430                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2431                         HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));

  2433 DEFINE_CALLSTATICMETHODV(jobject,  Object,  T_OBJECT

  2434                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2435                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));

  2436 DEFINE_CALLSTATICMETHODV(jint,     Int,     T_INT

  2437                         , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2438                         HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));

  2439 DEFINE_CALLSTATICMETHODV(jlong,    Long,    T_LONG

  2440                         , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2441                         HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));

  2442 // Float and double probes don't return value because dtrace doesn't currently support it

  2443 DEFINE_CALLSTATICMETHODV(jfloat,   Float,   T_FLOAT

  2444                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2445                         HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());

  2446 DEFINE_CALLSTATICMETHODV(jdouble,  Double,  T_DOUBLE

  2447                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2448                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());

  2450 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \

  2451                                 , EntryProbe, ResultProbe) \

  2452 \

  2453   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \

  2454                           , ResultProbe);                               \

  2455 \

  2456 JNI_ENTRY(ResultType, \

  2457           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \

  2458   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \

  2459 \

  2460   EntryProbe; \

  2461   ResultType ret = 0;\

  2462   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \

  2463                      (const ResultType&)ret);\

  2464 \

  2465   JavaValue jvalue(Tag); \

  2466   JNI_ArgumentPusherArray ap(methodID, args); \

  2467   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2468   ret = jvalue.get_##ResultType(); \

  2469   return ret;\

  2470 JNI_END

  2472 // the runtime type of subword integral basic types is integer

  2473 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN

  2474                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2475                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));

  2476 DEFINE_CALLSTATICMETHODA(jbyte,    Byte,    T_BYTE

  2477                         , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2478                         HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));

  2479 DEFINE_CALLSTATICMETHODA(jchar,    Char,    T_CHAR

  2480                         , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2481                         HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));

  2482 DEFINE_CALLSTATICMETHODA(jshort,   Short,   T_SHORT

  2483                         , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2484                         HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));

  2486 DEFINE_CALLSTATICMETHODA(jobject,  Object,  T_OBJECT

  2487                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2488                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));

  2489 DEFINE_CALLSTATICMETHODA(jint,     Int,     T_INT

  2490                         , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2491                         HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));

  2492 DEFINE_CALLSTATICMETHODA(jlong,    Long,    T_LONG

  2493                         , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2494                         HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));

  2495 // Float and double probes don't return value because dtrace doesn't currently support it

  2496 DEFINE_CALLSTATICMETHODA(jfloat,   Float,   T_FLOAT

  2497                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2498                         HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());

  2499 DEFINE_CALLSTATICMETHODA(jdouble,  Double,  T_DOUBLE

  2500                         , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2501                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());

  2503 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod

  2504                          , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());

  2505 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV

  2506                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());

  2507 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA

  2508                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());

  2509 #endif /* USDT2 */

  2511 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))

  2512   JNIWrapper("CallStaticVoidMethod");

  2513 #ifndef USDT2

  2514   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);

  2515 #else /* USDT2 */

  2516   HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(

  2517                                          env, cls, (uintptr_t) methodID);

  2518 #endif /* USDT2 */

  2519   DT_VOID_RETURN_MARK(CallStaticVoidMethod);

  2521   va_list args;

  2522   va_start(args, methodID);

  2523   JavaValue jvalue(T_VOID);

  2524   JNI_ArgumentPusherVaArg ap(methodID, args);

  2525   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);

  2526   va_end(args);

  2527 JNI_END

  2530 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))

  2531   JNIWrapper("CallStaticVoidMethodV");

  2532 #ifndef USDT2

  2533   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);

  2534 #else /* USDT2 */

  2535   HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(

  2536                                           env, cls, (uintptr_t) methodID);

  2537 #endif /* USDT2 */

  2538   DT_VOID_RETURN_MARK(CallStaticVoidMethodV);

  2540   JavaValue jvalue(T_VOID);

  2541   JNI_ArgumentPusherVaArg ap(methodID, args);

  2542   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);

  2543 JNI_END

  2546 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))

  2547   JNIWrapper("CallStaticVoidMethodA");

  2548 #ifndef USDT2

  2549   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);

  2550 #else /* USDT2 */

  2551   HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(

  2552                                           env, cls, (uintptr_t) methodID);

  2553 #endif /* USDT2 */

  2554   DT_VOID_RETURN_MARK(CallStaticVoidMethodA);

  2556   JavaValue jvalue(T_VOID);

  2557   JNI_ArgumentPusherArray ap(methodID, args);

  2558   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);

  2559 JNI_END

  2562 //

  2563 // Accessing Fields

  2564 //

  2567 #ifndef USDT2

  2568 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);

  2569 #else /* USDT2 */

  2570 DT_RETURN_MARK_DECL(GetFieldID, jfieldID

  2571                     , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));

  2572 #endif /* USDT2 */

  2574 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,

  2575           const char *name, const char *sig))

  2576   JNIWrapper("GetFieldID");

  2577 #ifndef USDT2

  2578   DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);

  2579 #else /* USDT2 */

  2580   HOTSPOT_JNI_GETFIELDID_ENTRY(

  2581                                env, clazz, (char *) name, (char *) sig);

  2582 #endif /* USDT2 */

  2583   jfieldID ret = 0;

  2584   DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);

  2586   // The class should have been loaded (we have an instance of the class

  2587   // passed in) so the field and signature should already be in the symbol

  2588   // table.  If they're not there, the field doesn't exist.

  2589   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));

  2590   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));

  2591   if (fieldname == NULL || signame == NULL) {

  2592     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2593   }

  2594   KlassHandle k(THREAD,

  2595                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  2596   // Make sure class is initialized before handing id's out to fields

  2597   k()->initialize(CHECK_NULL);

  2599   fieldDescriptor fd;

  2600   if (!k()->oop_is_instance() ||

  2601       !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {

  2602     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2603   }

  2605   // A jfieldID for a non-static field is simply the offset of the field within the instanceOop

  2606   // It may also have hash bits for k, if VerifyJNIFields is turned on.

  2607   ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());

  2608   return ret;

  2609 JNI_END

  2612 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))

  2613   JNIWrapper("GetObjectField");

  2614 #ifndef USDT2

  2615   DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);

  2616 #else /* USDT2 */

  2617   HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(

  2618                                    env, obj, (uintptr_t) fieldID);

  2619 #endif /* USDT2 */

  2620   oop o = JNIHandles::resolve_non_null(obj);

  2621   Klass* k = o->klass();

  2622   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);

  2623   // Keep JVMTI addition small and only check enabled flag here.

  2624   // jni_GetField_probe() assumes that is okay to create handles.

  2625   if (JvmtiExport::should_post_field_access()) {

  2626     o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);

  2627   }

  2628   jobject ret = JNIHandles::make_local(env, o->obj_field(offset));

  2629 #if INCLUDE_ALL_GCS

  2630   // If G1 is enabled and we are accessing the value of the referent

  2631   // field in a reference object then we need to register a non-null

  2632   // referent with the SATB barrier.

  2633   if (UseG1GC) {

  2634     bool needs_barrier = false;

  2636     if (ret != NULL &&

  2637         offset == java_lang_ref_Reference::referent_offset &&

  2638         InstanceKlass::cast(k)->reference_type() != REF_NONE) {

  2639       assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");

  2640       needs_barrier = true;

  2641     }

  2643     if (needs_barrier) {

  2644       oop referent = JNIHandles::resolve(ret);

  2645       G1SATBCardTableModRefBS::enqueue(referent);

  2646     }

  2647   }

  2648 #endif // INCLUDE_ALL_GCS

  2649 #ifndef USDT2

  2650   DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);

  2651 #else /* USDT2 */

  2652 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(

  2653                                   ret);

  2654 #endif /* USDT2 */

  2655   return ret;

  2656 JNI_END

  2659 #ifndef USDT2

  2660 #define DEFINE_GETFIELD(Return,Fieldname,Result) \

  2661 \

  2662   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\

  2663 \

  2664 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \

  2665   JNIWrapper("Get" XSTR(Result) "Field"); \

  2666 \

  2667   DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\

  2668   Return ret = 0;\

  2669   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\

  2670 \

  2671   oop o = JNIHandles::resolve_non_null(obj); \

  2672   Klass* k = o->klass(); \

  2673   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2674   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2675   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \

  2676   /* and creates a ResetNoHandleMark.                                   */ \

  2677   if (JvmtiExport::should_post_field_access()) { \

  2678     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \

  2679   } \

  2680   ret = o->Fieldname##_field(offset); \

  2681   return ret; \

  2682 JNI_END

  2684 DEFINE_GETFIELD(jboolean, bool,   Boolean)

  2685 DEFINE_GETFIELD(jbyte,    byte,   Byte)

  2686 DEFINE_GETFIELD(jchar,    char,   Char)

  2687 DEFINE_GETFIELD(jshort,   short,  Short)

  2688 DEFINE_GETFIELD(jint,     int,    Int)

  2689 DEFINE_GETFIELD(jlong,    long,   Long)

  2690 DEFINE_GETFIELD(jfloat,   float,  Float)

  2691 DEFINE_GETFIELD(jdouble,  double, Double)

  2693 #else /* USDT2 */

  2695 #define DEFINE_GETFIELD(Return,Fieldname,Result \

  2696   , EntryProbe, ReturnProbe) \

  2697 \

  2698   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \

  2699   , ReturnProbe); \

  2700 \

  2701 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \

  2702   JNIWrapper("Get" XSTR(Result) "Field"); \

  2703 \

  2704   EntryProbe; \

  2705   Return ret = 0;\

  2706   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\

  2707 \

  2708   oop o = JNIHandles::resolve_non_null(obj); \

  2709   Klass* k = o->klass(); \

  2710   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2711   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2712   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \

  2713   /* and creates a ResetNoHandleMark.                                   */ \

  2714   if (JvmtiExport::should_post_field_access()) { \

  2715     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \

  2716   } \

  2717   ret = o->Fieldname##_field(offset); \

  2718   return ret; \

  2719 JNI_END

  2721 DEFINE_GETFIELD(jboolean, bool,   Boolean

  2722                 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2723                 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))

  2724 DEFINE_GETFIELD(jbyte,    byte,   Byte

  2725                 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2726                 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))

  2727 DEFINE_GETFIELD(jchar,    char,   Char

  2728                 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2729                 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))

  2730 DEFINE_GETFIELD(jshort,   short,  Short

  2731                 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2732                 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))

  2733 DEFINE_GETFIELD(jint,     int,    Int

  2734                 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2735                 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))

  2736 DEFINE_GETFIELD(jlong,    long,   Long

  2737                 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2738                 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))

  2739 // Float and double probes don't return value because dtrace doesn't currently support it

  2740 DEFINE_GETFIELD(jfloat,   float,  Float

  2741                 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2742                 HOTSPOT_JNI_GETFLOATFIELD_RETURN())

  2743 DEFINE_GETFIELD(jdouble,  double, Double

  2744                 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2745                 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())

  2746 #endif /* USDT2 */

  2748 address jni_GetBooleanField_addr() {

  2749   return (address)jni_GetBooleanField;

  2750 }

  2751 address jni_GetByteField_addr() {

  2752   return (address)jni_GetByteField;

  2753 }

  2754 address jni_GetCharField_addr() {

  2755   return (address)jni_GetCharField;

  2756 }

  2757 address jni_GetShortField_addr() {

  2758   return (address)jni_GetShortField;

  2759 }

  2760 address jni_GetIntField_addr() {

  2761   return (address)jni_GetIntField;

  2762 }

  2763 address jni_GetLongField_addr() {

  2764   return (address)jni_GetLongField;

  2765 }

  2766 address jni_GetFloatField_addr() {

  2767   return (address)jni_GetFloatField;

  2768 }

  2769 address jni_GetDoubleField_addr() {

  2770   return (address)jni_GetDoubleField;

  2771 }

  2773 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))

  2774   JNIWrapper("SetObjectField");

  2775 #ifndef USDT2

  2776   DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);

  2777 #else /* USDT2 */

  2778   HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(

  2779                                    env, obj, (uintptr_t) fieldID, value);

  2780 #endif /* USDT2 */

  2781   oop o = JNIHandles::resolve_non_null(obj);

  2782   Klass* k = o->klass();

  2783   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);

  2784   // Keep JVMTI addition small and only check enabled flag here.

  2785   // jni_SetField_probe_nh() assumes that is not okay to create handles

  2786   // and creates a ResetNoHandleMark.

  2787   if (JvmtiExport::should_post_field_modification()) {

  2788     jvalue field_value;

  2789     field_value.l = value;

  2790     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);

  2791   }

  2792   o->obj_field_put(offset, JNIHandles::resolve(value));

  2793 #ifndef USDT2

  2794   DTRACE_PROBE(hotspot_jni, SetObjectField__return);

  2795 #else /* USDT2 */

  2796   HOTSPOT_JNI_SETOBJECTFIELD_RETURN(

  2797 );

  2798 #endif /* USDT2 */

  2799 JNI_END

  2801 #ifndef USDT2

  2802 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \

  2803 \

  2804 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \

  2805   JNIWrapper("Set" XSTR(Result) "Field"); \

  2806 \

  2807   FP_SELECT_##Result( \

  2808     DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \

  2809     DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \

  2810 \

  2811   oop o = JNIHandles::resolve_non_null(obj); \

  2812   Klass* k = o->klass(); \

  2813   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2814   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2815   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \

  2816   /* and creates a ResetNoHandleMark.                                   */ \

  2817   if (JvmtiExport::should_post_field_modification()) { \

  2818     jvalue field_value; \

  2819     field_value.unionType = value; \

  2820     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \

  2821   } \

  2822   o->Fieldname##_field_put(offset, value); \

  2823   DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\

  2824 JNI_END

  2826 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z)

  2827 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b)

  2828 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c)

  2829 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s)

  2830 DEFINE_SETFIELD(jint,     int,    Int,     'I', i)

  2831 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j)

  2832 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f)

  2833 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d)

  2835 #else /* USDT2 */

  2837 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \

  2838                         , EntryProbe, ReturnProbe) \

  2839 \

  2840 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \

  2841   JNIWrapper("Set" XSTR(Result) "Field"); \

  2842 \

  2843   EntryProbe; \

  2844 \

  2845   oop o = JNIHandles::resolve_non_null(obj); \

  2846   Klass* k = o->klass(); \

  2847   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2848   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2849   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \

  2850   /* and creates a ResetNoHandleMark.                                   */ \

  2851   if (JvmtiExport::should_post_field_modification()) { \

  2852     jvalue field_value; \

  2853     field_value.unionType = value; \

  2854     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \

  2855   } \

  2856   if (SigType == 'Z') { value = ((jboolean)value) & 1; } \

  2857   o->Fieldname##_field_put(offset, value); \

  2858   ReturnProbe; \

  2859 JNI_END

  2861 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z

  2862                 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2863                 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())

  2864 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b

  2865                 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2866                 HOTSPOT_JNI_SETBYTEFIELD_RETURN())

  2867 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c

  2868                 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2869                 HOTSPOT_JNI_SETCHARFIELD_RETURN())

  2870 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s

  2871                 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2872                 HOTSPOT_JNI_SETSHORTFIELD_RETURN())

  2873 DEFINE_SETFIELD(jint,     int,    Int,     'I', i

  2874                 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2875                 HOTSPOT_JNI_SETINTFIELD_RETURN())

  2876 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j

  2877                 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2878                 HOTSPOT_JNI_SETLONGFIELD_RETURN())

  2879 // Float and double probes don't return value because dtrace doesn't currently support it

  2880 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f

  2881                 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2882                 HOTSPOT_JNI_SETFLOATFIELD_RETURN())

  2883 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d

  2884                 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2885                 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())

  2886 #endif /* USDT2 */

  2888 #ifndef USDT2

  2889 DT_RETURN_MARK_DECL(ToReflectedField, jobject);

  2890 #else /* USDT2 */

  2891 DT_RETURN_MARK_DECL(ToReflectedField, jobject

  2892                     , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));

  2893 #endif /* USDT2 */

  2895 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))

  2896   JNIWrapper("ToReflectedField");

  2897 #ifndef USDT2

  2898   DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,

  2899                 env, cls, fieldID, isStatic);

  2900 #else /* USDT2 */

  2901   HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(

  2902                 env, cls, (uintptr_t) fieldID, isStatic);

  2903 #endif /* USDT2 */

  2904   jobject ret = NULL;

  2905   DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);

  2907   fieldDescriptor fd;

  2908   bool found = false;

  2909   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));

  2911   assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");

  2913   if (isStatic) {

  2914     // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.

  2915     JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);

  2916     assert(id->is_static_field_id(), "invalid static field id");

  2917     found = id->find_local_field(&fd);

  2918   } else {

  2919     // Non-static field. The fieldID is really the offset of the field within the instanceOop.

  2920     int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);

  2921     found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);

  2922   }

  2923   assert(found, "bad fieldID passed into jni_ToReflectedField");

  2924   oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);

  2925   ret = JNIHandles::make_local(env, reflected);

  2926   return ret;

  2927 JNI_END

  2930 //

  2931 // Accessing Static Fields

  2932 //

  2933 #ifndef USDT2

  2934 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);

  2935 #else /* USDT2 */

  2936 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID

  2937                     , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));

  2938 #endif /* USDT2 */

  2940 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,

  2941           const char *name, const char *sig))

  2942   JNIWrapper("GetStaticFieldID");

  2943 #ifndef USDT2

  2944   DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);

  2945 #else /* USDT2 */

  2946   HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(

  2947                                      env, clazz, (char *) name, (char *) sig);

  2948 #endif /* USDT2 */

  2949   jfieldID ret = NULL;

  2950   DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);

  2952   // The class should have been loaded (we have an instance of the class

  2953   // passed in) so the field and signature should already be in the symbol

  2954   // table.  If they're not there, the field doesn't exist.

  2955   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));

  2956   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));

  2957   if (fieldname == NULL || signame == NULL) {

  2958     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2959   }

  2960   KlassHandle k(THREAD,

  2961                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  2962   // Make sure class is initialized before handing id's out to static fields

  2963   k()->initialize(CHECK_NULL);

  2965   fieldDescriptor fd;

  2966   if (!k()->oop_is_instance() ||

  2967       !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {

  2968     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2969   }

  2971   // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*

  2972   JNIid* id = fd.field_holder()->jni_id_for(fd.offset());

  2973   debug_only(id->set_is_static_field_id();)

  2975   debug_only(id->verify(fd.field_holder()));

  2977   ret = jfieldIDWorkaround::to_static_jfieldID(id);

  2978   return ret;

  2979 JNI_END

  2982 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))

  2983   JNIWrapper("GetStaticObjectField");

  2984 #ifndef USDT2

  2985   DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);

  2986 #else /* USDT2 */

  2987   HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(

  2988                                          env, clazz, (uintptr_t) fieldID);

  2989 #endif /* USDT2 */

  2990 #if INCLUDE_JNI_CHECK

  2991   DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)

  2992 #endif // INCLUDE_JNI_CHECK

  2993   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);

  2994   assert(id->is_static_field_id(), "invalid static field id");

  2995   // Keep JVMTI addition small and only check enabled flag here.

  2996   // jni_GetField_probe() assumes that is okay to create handles.

  2997   if (JvmtiExport::should_post_field_access()) {

  2998     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);

  2999   }

  3000   jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));

  3001 #ifndef USDT2

  3002   DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);

  3003 #else /* USDT2 */

  3004   HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(

  3005                                           ret);

  3006 #endif /* USDT2 */

  3007   return ret;

  3008 JNI_END

  3010 #ifndef USDT2

  3011 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \

  3012 \

  3013   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\

  3014 \

  3015 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \

  3016   JNIWrapper("GetStatic" XSTR(Result) "Field"); \

  3017   DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\

  3018   Return ret = 0;\

  3019   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \

  3020                      (const Return&)ret);\

  3021   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3022   assert(id->is_static_field_id(), "invalid static field id"); \

  3023   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3024   /* jni_GetField_probe() assumes that is okay to create handles. */ \

  3025   if (JvmtiExport::should_post_field_access()) { \

  3026     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \

  3027   } \

  3028   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \

  3029   return ret;\

  3030 JNI_END

  3032 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean)

  3033 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte)

  3034 DEFINE_GETSTATICFIELD(jchar,    char,   Char)

  3035 DEFINE_GETSTATICFIELD(jshort,   short,  Short)

  3036 DEFINE_GETSTATICFIELD(jint,     int,    Int)

  3037 DEFINE_GETSTATICFIELD(jlong,    long,   Long)

  3038 DEFINE_GETSTATICFIELD(jfloat,   float,  Float)

  3039 DEFINE_GETSTATICFIELD(jdouble,  double, Double)

  3041 #else /* USDT2 */

  3043 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \

  3044                               , EntryProbe, ReturnProbe) \

  3045 \

  3046   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \

  3047                           , ReturnProbe);                                          \

  3048 \

  3049 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \

  3050   JNIWrapper("GetStatic" XSTR(Result) "Field"); \

  3051   EntryProbe; \

  3052   Return ret = 0;\

  3053   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \

  3054                      (const Return&)ret);\

  3055   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3056   assert(id->is_static_field_id(), "invalid static field id"); \

  3057   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3058   /* jni_GetField_probe() assumes that is okay to create handles. */ \

  3059   if (JvmtiExport::should_post_field_access()) { \

  3060     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \

  3061   } \

  3062   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \

  3063   return ret;\

  3064 JNI_END

  3066 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean

  3067                       , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))

  3068 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte

  3069                       , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref)   )

  3070 DEFINE_GETSTATICFIELD(jchar,    char,   Char

  3071                       , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref)   )

  3072 DEFINE_GETSTATICFIELD(jshort,   short,  Short

  3073                       , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref)  )

  3074 DEFINE_GETSTATICFIELD(jint,     int,    Int

  3075                       , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),     HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref)    )

  3076 DEFINE_GETSTATICFIELD(jlong,    long,   Long

  3077                       , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref)   )

  3078 // Float and double probes don't return value because dtrace doesn't currently support it

  3079 DEFINE_GETSTATICFIELD(jfloat,   float,  Float

  3080                       , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN()          )

  3081 DEFINE_GETSTATICFIELD(jdouble,  double, Double

  3082                       , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),  HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN()         )

  3083 #endif /* USDT2 */

  3085 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))

  3086   JNIWrapper("SetStaticObjectField");

  3087 #ifndef USDT2

  3088   DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);

  3089 #else /* USDT2 */

  3090  HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(

  3091                                         env, clazz, (uintptr_t) fieldID, value);

  3092 #endif /* USDT2 */

  3093   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);

  3094   assert(id->is_static_field_id(), "invalid static field id");

  3095   // Keep JVMTI addition small and only check enabled flag here.

  3096   // jni_SetField_probe() assumes that is okay to create handles.

  3097   if (JvmtiExport::should_post_field_modification()) {

  3098     jvalue field_value;

  3099     field_value.l = value;

  3100     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);

  3101   }

  3102   id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));

  3103 #ifndef USDT2

  3104   DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);

  3105 #else /* USDT2 */

  3106   HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(

  3107                                           );

  3108 #endif /* USDT2 */

  3109 JNI_END

  3112 #ifndef USDT2

  3113 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \

  3114 \

  3115 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \

  3116   JNIWrapper("SetStatic" XSTR(Result) "Field"); \

  3117   FP_SELECT_##Result( \

  3118      DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \

  3119      DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \

  3120 \

  3121   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3122   assert(id->is_static_field_id(), "invalid static field id"); \

  3123   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3124   /* jni_SetField_probe() assumes that is okay to create handles. */ \

  3125   if (JvmtiExport::should_post_field_modification()) { \

  3126     jvalue field_value; \

  3127     field_value.unionType = value; \

  3128     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \

  3129   } \

  3130   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \

  3131   DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\

  3132 JNI_END

  3134 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z)

  3135 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b)

  3136 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c)

  3137 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s)

  3138 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i)

  3139 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j)

  3140 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f)

  3141 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d)

  3143 #else /* USDT2 */

  3145 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \

  3146                               , EntryProbe, ReturnProbe) \

  3147 \

  3148 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \

  3149   JNIWrapper("SetStatic" XSTR(Result) "Field"); \

  3150   EntryProbe; \

  3151 \

  3152   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3153   assert(id->is_static_field_id(), "invalid static field id"); \

  3154   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3155   /* jni_SetField_probe() assumes that is okay to create handles. */ \

  3156   if (JvmtiExport::should_post_field_modification()) { \

  3157     jvalue field_value; \

  3158     field_value.unionType = value; \

  3159     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \

  3160   } \

  3161   if (SigType == 'Z') { value = ((jboolean)value) & 1; } \

  3162   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \

  3163   ReturnProbe;\

  3164 JNI_END

  3166 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z

  3167                       , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),

  3168                       HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())

  3169 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b

  3170                       , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3171                       HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())

  3172 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c

  3173                       , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3174                       HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())

  3175 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s

  3176                       , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3177                       HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())

  3178 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i

  3179                       , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3180                       HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())

  3181 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j

  3182                       , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3183                       HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())

  3184 // Float and double probes don't return value because dtrace doesn't currently support it

  3185 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f

  3186                       , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),

  3187                       HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())

  3188 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d

  3189                       , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),

  3190                       HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())

  3191 #endif /* USDT2 */

  3193 //

  3194 // String Operations

  3195 //

  3197 // Unicode Interface

  3199 #ifndef USDT2

  3200 DT_RETURN_MARK_DECL(NewString, jstring);

  3201 #else /* USDT2 */

  3202 DT_RETURN_MARK_DECL(NewString, jstring

  3203                     , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));

  3204 #endif /* USDT2 */

  3206 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))

  3207   JNIWrapper("NewString");

  3208 #ifndef USDT2

  3209   DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);

  3210 #else /* USDT2 */

  3211  HOTSPOT_JNI_NEWSTRING_ENTRY(

  3212                              env, (uint16_t *) unicodeChars, len);

  3213 #endif /* USDT2 */

  3214   jstring ret = NULL;

  3215   DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);

  3216   oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);

  3217   ret = (jstring) JNIHandles::make_local(env, string);

  3218   return ret;

  3219 JNI_END

  3222 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))

  3223   JNIWrapper("GetStringLength");

  3224 #ifndef USDT2

  3225   DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);

  3226 #else /* USDT2 */

  3227   HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(

  3228                                     env, string);

  3229 #endif /* USDT2 */

  3230   jsize ret = 0;

  3231   oop s = JNIHandles::resolve_non_null(string);

  3232   if (java_lang_String::value(s) != NULL) {

  3233     ret = java_lang_String::length(s);

  3234   }

  3235 #ifndef USDT2

  3236   DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);

  3237 #else /* USDT2 */

  3238  HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(

  3239                                     ret);

  3240 #endif /* USDT2 */

  3241   return ret;

  3242 JNI_END

  3245 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(

  3246   JNIEnv *env, jstring string, jboolean *isCopy))

  3247   JNIWrapper("GetStringChars");

  3248 #ifndef USDT2

  3249   DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);

  3250 #else /* USDT2 */

  3251  HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(

  3252                                   env, string, (uintptr_t *) isCopy);

  3253 #endif /* USDT2 */

  3254   jchar* buf = NULL;

  3255   oop s = JNIHandles::resolve_non_null(string);

  3256   typeArrayOop s_value = java_lang_String::value(s);

  3257   if (s_value != NULL) {

  3258     int s_len = java_lang_String::length(s);

  3259     int s_offset = java_lang_String::offset(s);

  3260     buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal);  // add one for zero termination

  3261     /* JNI Specification states return NULL on OOM */

  3262     if (buf != NULL) {

  3263       if (s_len > 0) {

  3264         memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);

  3265       }

  3266       buf[s_len] = 0;

  3267       //%note jni_5

  3268       if (isCopy != NULL) {

  3269         *isCopy = JNI_TRUE;

  3270       }

  3271     }

  3272   }

  3273 #ifndef USDT2

  3274   DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);

  3275 #else /* USDT2 */

  3276   HOTSPOT_JNI_GETSTRINGCHARS_RETURN(

  3277                                     buf);

  3278 #endif /* USDT2 */

  3279   return buf;

  3280 JNI_END

  3283 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))

  3284   JNIWrapper("ReleaseStringChars");

  3285 #ifndef USDT2

  3286   DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);

  3287 #else /* USDT2 */

  3288   HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(

  3289                                        env, str, (uint16_t *) chars);

  3290 #endif /* USDT2 */

  3291   //%note jni_6

  3292   if (chars != NULL) {

  3293     // Since String objects are supposed to be immutable, don't copy any

  3294     // new data back.  A bad user will have to go after the char array.

  3295     FreeHeap((void*) chars);

  3296   }

  3297 #ifndef USDT2

  3298   DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);

  3299 #else /* USDT2 */

  3300   HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(

  3301 );

  3302 #endif /* USDT2 */

  3303 JNI_END

  3306 // UTF Interface

  3308 #ifndef USDT2

  3309 DT_RETURN_MARK_DECL(NewStringUTF, jstring);

  3310 #else /* USDT2 */

  3311 DT_RETURN_MARK_DECL(NewStringUTF, jstring

  3312                     , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));

  3313 #endif /* USDT2 */

  3315 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))

  3316   JNIWrapper("NewStringUTF");

  3317 #ifndef USDT2

  3318   DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);

  3319 #else /* USDT2 */

  3320   HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(

  3321                                  env, (char *) bytes);

  3322 #endif /* USDT2 */

  3323   jstring ret;

  3324   DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);

  3326   oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);

  3327   ret = (jstring) JNIHandles::make_local(env, result);

  3328   return ret;

  3329 JNI_END

  3332 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))

  3333   JNIWrapper("GetStringUTFLength");

  3334 #ifndef USDT2

  3335   DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);

  3336 #else /* USDT2 */

  3337  HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(

  3338                                       env, string);

  3339 #endif /* USDT2 */

  3340   jsize ret = 0;

  3341   oop java_string = JNIHandles::resolve_non_null(string);

  3342   if (java_lang_String::value(java_string) != NULL) {

  3343     ret = java_lang_String::utf8_length(java_string);

  3344   }

  3345 #ifndef USDT2

  3346   DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);

  3347 #else /* USDT2 */

  3348   HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(

  3349                                         ret);

  3350 #endif /* USDT2 */

  3351   return ret;

  3352 JNI_END

  3355 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))

  3356   JNIWrapper("GetStringUTFChars");

  3357 #ifndef USDT2

  3358   DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);

  3359 #else /* USDT2 */

  3360  HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(

  3361                                      env, string, (uintptr_t *) isCopy);

  3362 #endif /* USDT2 */

  3363   char* result = NULL;

  3364   oop java_string = JNIHandles::resolve_non_null(string);

  3365   if (java_lang_String::value(java_string) != NULL) {

  3366     size_t length = java_lang_String::utf8_length(java_string);

  3367     /* JNI Specification states return NULL on OOM */

  3368     result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);

  3369     if (result != NULL) {

  3370       java_lang_String::as_utf8_string(java_string, result, (int) length + 1);

  3371       if (isCopy != NULL) {

  3372         *isCopy = JNI_TRUE;

  3373       }

  3374     }

  3375   }

  3376 #ifndef USDT2

  3377   DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);

  3378 #else /* USDT2 */

  3379  HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(

  3380                                       result);

  3381 #endif /* USDT2 */

  3382   return result;

  3383 JNI_END

  3386 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))

  3387   JNIWrapper("ReleaseStringUTFChars");

  3388 #ifndef USDT2

  3389   DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);

  3390 #else /* USDT2 */

  3391  HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(

  3392                                          env, str, (char *) chars);

  3393 #endif /* USDT2 */

  3394   if (chars != NULL) {

  3395     FreeHeap((char*) chars);

  3396   }

  3397 #ifndef USDT2

  3398   DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);

  3399 #else /* USDT2 */

  3400 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(

  3401 );

  3402 #endif /* USDT2 */

  3403 JNI_END

  3406 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))

  3407   JNIWrapper("GetArrayLength");

  3408 #ifndef USDT2

  3409   DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);

  3410 #else /* USDT2 */

  3411  HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(

  3412                                   env, array);

  3413 #endif /* USDT2 */

  3414   arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));

  3415   assert(a->is_array(), "must be array");

  3416   jsize ret = a->length();

  3417 #ifndef USDT2

  3418   DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);

  3419 #else /* USDT2 */

  3420  HOTSPOT_JNI_GETARRAYLENGTH_RETURN(

  3421                                    ret);

  3422 #endif /* USDT2 */

  3423   return ret;

  3424 JNI_END

  3427 //

  3428 // Object Array Operations

  3429 //

  3431 #ifndef USDT2

  3432 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);

  3433 #else /* USDT2 */

  3434 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray

  3435                     , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));

  3436 #endif /* USDT2 */

  3438 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))

  3439   JNIWrapper("NewObjectArray");

  3440 #ifndef USDT2

  3441   DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);

  3442 #else /* USDT2 */

  3443  HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(

  3444                                   env, length, elementClass, initialElement);

  3445 #endif /* USDT2 */

  3446   jobjectArray ret = NULL;

  3447   DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);

  3448   KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));

  3449   Klass* ako = ek()->array_klass(CHECK_NULL);

  3450   KlassHandle ak = KlassHandle(THREAD, ako);

  3451   ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);

  3452   objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);

  3453   oop initial_value = JNIHandles::resolve(initialElement);

  3454   if (initial_value != NULL) {  // array already initialized with NULL

  3455     for (int index = 0; index < length; index++) {

  3456       result->obj_at_put(index, initial_value);

  3457     }

  3458   }

  3459   ret = (jobjectArray) JNIHandles::make_local(env, result);

  3460   return ret;

  3461 JNI_END

  3463 #ifndef USDT2

  3464 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);

  3465 #else /* USDT2 */

  3466 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject

  3467                     , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));

  3468 #endif /* USDT2 */

  3470 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))

  3471   JNIWrapper("GetObjectArrayElement");

  3472 #ifndef USDT2

  3473   DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);

  3474 #else /* USDT2 */

  3475  HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(

  3476                                          env, array, index);

  3477 #endif /* USDT2 */

  3478   jobject ret = NULL;

  3479   DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);

  3480   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));

  3481   if (a->is_within_bounds(index)) {

  3482     ret = JNIHandles::make_local(env, a->obj_at(index));

  3483     return ret;

  3484   } else {

  3485     char buf[jintAsStringSize];

  3486     sprintf(buf, "%d", index);

  3487     THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);

  3488   }

  3489 JNI_END

  3491 #ifndef USDT2

  3492 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);

  3493 #else /* USDT2 */

  3494 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement

  3495                          , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());

  3496 #endif /* USDT2 */

  3498 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))

  3499   JNIWrapper("SetObjectArrayElement");

  3500 #ifndef USDT2

  3501   DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);

  3502 #else /* USDT2 */

  3503  HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(

  3504                                          env, array, index, value);

  3505 #endif /* USDT2 */

  3506   DT_VOID_RETURN_MARK(SetObjectArrayElement);

  3508   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));

  3509   oop v = JNIHandles::resolve(value);

  3510   if (a->is_within_bounds(index)) {

  3511     if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {

  3512       a->obj_at_put(index, v);

  3513     } else {

  3514       THROW(vmSymbols::java_lang_ArrayStoreException());

  3515     }

  3516   } else {

  3517     char buf[jintAsStringSize];

  3518     sprintf(buf, "%d", index);

  3519     THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);

  3520   }

  3521 JNI_END

  3524 #ifndef USDT2

  3525 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \

  3526 \

  3527   DT_RETURN_MARK_DECL(New##Result##Array, Return); \

  3528 \

  3529 JNI_ENTRY(Return, \

  3530           jni_New##Result##Array(JNIEnv *env, jsize len)) \

  3531   JNIWrapper("New" XSTR(Result) "Array"); \

  3532   DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\

  3533   Return ret = NULL;\

  3534   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\

  3535 \

  3536   oop obj= oopFactory::Allocator(len, CHECK_0); \

  3537   ret = (Return) JNIHandles::make_local(env, obj); \

  3538   return ret;\

  3539 JNI_END

  3541 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean)

  3542 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte)

  3543 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short)

  3544 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char)

  3545 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int)

  3546 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long)

  3547 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float)

  3548 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double)

  3550 #else /* USDT2 */

  3552 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \

  3553                               ,EntryProbe,ReturnProbe)  \

  3554 \

  3555   DT_RETURN_MARK_DECL(New##Result##Array, Return \

  3556                       , ReturnProbe); \

  3557 \

  3558 JNI_ENTRY(Return, \

  3559           jni_New##Result##Array(JNIEnv *env, jsize len)) \

  3560   JNIWrapper("New" XSTR(Result) "Array"); \

  3561   EntryProbe; \

  3562   Return ret = NULL;\

  3563   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\

  3564 \

  3565   oop obj= oopFactory::Allocator(len, CHECK_0); \

  3566   ret = (Return) JNIHandles::make_local(env, obj); \

  3567   return ret;\

  3568 JNI_END

  3570 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean,

  3571                       HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),

  3572                       HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))

  3573 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte,

  3574                       HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),

  3575                       HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))

  3576 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short,

  3577                       HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),

  3578                       HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))

  3579 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char,

  3580                       HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),

  3581                       HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))

  3582 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int,

  3583                       HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),

  3584                       HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))

  3585 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long,

  3586                       HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),

  3587                       HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))

  3588 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float,

  3589                       HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),

  3590                       HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))

  3591 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double,

  3592                       HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),

  3593                       HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))

  3594 #endif /* USDT2 */

  3596 // Return an address which will fault if the caller writes to it.

  3598 static char* get_bad_address() {

  3599   static char* bad_address = NULL;

  3600   if (bad_address == NULL) {

  3601     size_t size = os::vm_allocation_granularity();

  3602     bad_address = os::reserve_memory(size);

  3603     if (bad_address != NULL) {

  3604       os::protect_memory(bad_address, size, os::MEM_PROT_READ,

  3605                          /*is_committed*/false);

  3606       MemTracker::record_virtual_memory_type((void*)bad_address, mtInternal);

  3607     }

  3608   }

  3609   return bad_address;

  3610 }

  3613 #ifndef USDT2

  3614 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \

  3615 \

  3616 JNI_QUICK_ENTRY(ElementType*, \

  3617           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \

  3618   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \

  3619   DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\

  3620   /* allocate an chunk of memory in c land */ \

  3621   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3622   ElementType* result; \

  3623   int len = a->length(); \

  3624   if (len == 0) { \

  3625     /* Empty array: legal but useless, can't return NULL. \

  3626      * Return a pointer to something useless. \

  3627      * Avoid asserts in typeArrayOop. */ \

  3628     result = (ElementType*)get_bad_address(); \

  3629   } else { \

  3630     /* JNI Specification states return NULL on OOM */                    \

  3631     result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \

  3632     if (result != NULL) {                                                \

  3633       /* copy the array to the c chunk */                                \

  3634       memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len);      \

  3635       if (isCopy) {                                                      \

  3636         *isCopy = JNI_TRUE;                                              \

  3637       }                                                                  \

  3638     }                                                                    \

  3639   } \

  3640   DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\

  3641   return result; \

  3642 JNI_END

  3644 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)

  3645 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte)

  3646 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short)

  3647 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char)

  3648 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int)

  3649 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long)

  3650 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float)

  3651 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double)

  3653 #else /* USDT2 */

  3655 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \

  3656                                       , EntryProbe, ReturnProbe) \

  3657 \

  3658 JNI_QUICK_ENTRY(ElementType*, \

  3659           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \

  3660   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \

  3661   EntryProbe; \

  3662   /* allocate an chunk of memory in c land */ \

  3663   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3664   ElementType* result; \

  3665   int len = a->length(); \

  3666   if (len == 0) { \

  3667     /* Empty array: legal but useless, can't return NULL. \

  3668      * Return a pointer to something useless. \

  3669      * Avoid asserts in typeArrayOop. */ \

  3670     result = (ElementType*)get_bad_address(); \

  3671   } else { \

  3672     /* JNI Specification states return NULL on OOM */                    \

  3673     result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \

  3674     if (result != NULL) {                                                \

  3675       /* copy the array to the c chunk */                                \

  3676       memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len);      \

  3677       if (isCopy) {                                                      \

  3678         *isCopy = JNI_TRUE;                                              \

  3679       }                                                                  \

  3680     }                                                                    \

  3681   } \

  3682   ReturnProbe; \

  3683   return result; \

  3684 JNI_END

  3686 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool

  3687                               , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3688                               HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))

  3689 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte

  3690                               , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3691                               HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))

  3692 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short

  3693                               , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),

  3694                               HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))

  3695 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char

  3696                               , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),

  3697                               HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))

  3698 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int

  3699                               , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3700                               HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))

  3701 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long

  3702                               , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3703                               HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))

  3704 // Float and double probes don't return value because dtrace doesn't currently support it

  3705 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float

  3706                               , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3707                               HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))

  3708 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double

  3709                               , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3710                               HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))

  3711 #endif /* USDT2 */

  3713 #ifndef USDT2

  3714 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \

  3715 \

  3716 JNI_QUICK_ENTRY(void, \

  3717           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \

  3718                                              ElementType *buf, jint mode)) \

  3719   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \

  3720   DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\

  3721   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3722   int len = a->length(); \

  3723   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \

  3724     if ((mode == 0) || (mode == JNI_COMMIT)) { \

  3725       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \

  3726     } \

  3727     if ((mode == 0) || (mode == JNI_ABORT)) { \

  3728       FreeHeap(buf); \

  3729     } \

  3730   } \

  3731   DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\

  3732 JNI_END

  3734 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)

  3735 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte)

  3736 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short)

  3737 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char)

  3738 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int)

  3739 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long)

  3740 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float)

  3741 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double)

  3743 #else /* USDT2 */

  3745 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \

  3746                                           , EntryProbe, ReturnProbe);\

  3747 \

  3748 JNI_QUICK_ENTRY(void, \

  3749           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \

  3750                                              ElementType *buf, jint mode)) \

  3751   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \

  3752   EntryProbe; \

  3753   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3754   int len = a->length(); \

  3755   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \

  3756     if ((mode == 0) || (mode == JNI_COMMIT)) { \

  3757       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \

  3758     } \

  3759     if ((mode == 0) || (mode == JNI_ABORT)) { \

  3760       FreeHeap(buf); \

  3761     } \

  3762   } \

  3763   ReturnProbe; \

  3764 JNI_END

  3766 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool

  3767                                   , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),

  3768                                   HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())

  3769 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte

  3770                                   , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),

  3771                                   HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())

  3772 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short

  3773                                   ,  HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),

  3774                                   HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())

  3775 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char

  3776                                   ,  HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),

  3777                                   HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())

  3778 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int

  3779                                   , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),

  3780                                   HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())

  3781 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long

  3782                                   , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),

  3783                                   HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())

  3784 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float

  3785                                   , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),

  3786                                   HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())

  3787 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double

  3788                                   , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),

  3789                                   HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())

  3790 #endif /* USDT2 */

  3792 #ifndef USDT2

  3793 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \

  3794   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\

  3795 \

  3796 JNI_ENTRY(void, \

  3797 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3798              jsize len, ElementType *buf)) \

  3799   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \

  3800   DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\

  3801   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \

  3802   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3803   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \

  3804     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3805   } else { \

  3806     if (len > 0) { \

  3807       int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \

  3808       memcpy((u_char*) buf, \

  3809              (u_char*) src->Tag##_at_addr(start), \

  3810              len << sc);                          \

  3811     } \

  3812   } \

  3813 JNI_END

  3815 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)

  3816 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte)

  3817 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short)

  3818 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char)

  3819 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int)

  3820 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long)

  3821 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float)

  3822 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double)

  3824 #else /* USDT2 */

  3826 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \

  3827                                     , EntryProbe, ReturnProbe); \

  3828   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \

  3829                            , ReturnProbe); \

  3830 \

  3831 JNI_ENTRY(void, \

  3832 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3833              jsize len, ElementType *buf)) \

  3834   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \

  3835   EntryProbe; \

  3836   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \

  3837   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3838   if (start < 0 || len < 0 || (start > src->length() - len)) { \

  3839     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3840   } else { \

  3841     if (len > 0) { \

  3842       int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \

  3843       memcpy((u_char*) buf, \

  3844              (u_char*) src->Tag##_at_addr(start), \

  3845              len << sc);                          \

  3846     } \

  3847   } \

  3848 JNI_END

  3850 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool

  3851                             , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),

  3852                             HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());

  3853 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte

  3854                             ,  HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),

  3855                             HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());

  3856 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short

  3857                             , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),

  3858                             HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());

  3859 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char

  3860                             ,  HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),

  3861                             HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());

  3862 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int

  3863                             , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),

  3864                             HOTSPOT_JNI_GETINTARRAYREGION_RETURN());

  3865 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long

  3866                             ,  HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),

  3867                             HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());

  3868 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float

  3869                             , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),

  3870                             HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());

  3871 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double

  3872                             , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),

  3873                             HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());

  3874 #endif /* USDT2 */

  3876 #ifndef USDT2

  3877 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \

  3878   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\

  3879 \

  3880 JNI_ENTRY(void, \

  3881 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3882              jsize len, const ElementType *buf)) \

  3883   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \

  3884   DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\

  3885   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \

  3886   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3887   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \

  3888     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3889   } else { \

  3890     if (len > 0) { \

  3891       int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \

  3892       memcpy((u_char*) dst->Tag##_at_addr(start), \

  3893              (u_char*) buf, \

  3894              len << sc);    \

  3895     } \

  3896   } \

  3897 JNI_END

  3899 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)

  3900 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte)

  3901 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short)

  3902 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char)

  3903 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int)

  3904 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long)

  3905 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float)

  3906 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double)

  3908 #else /* USDT2 */

  3910 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \

  3911                                     , EntryProbe, ReturnProbe); \

  3912   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \

  3913                            ,ReturnProbe);           \

  3914 \

  3915 JNI_ENTRY(void, \

  3916 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3917              jsize len, const ElementType *buf)) \

  3918   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \

  3919   EntryProbe; \

  3920   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \

  3921   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3922   if (start < 0 || len < 0 || (start > dst->length() - len)) { \

  3923     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3924   } else { \

  3925     if (len > 0) { \

  3926       int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \

  3927       memcpy((u_char*) dst->Tag##_at_addr(start), \

  3928              (u_char*) buf, \

  3929              len << sc);    \

  3930     } \

  3931   } \

  3932 JNI_END

  3934 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool

  3935                             , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),

  3936                             HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())

  3937 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte

  3938                             , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),

  3939                             HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())

  3940 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short

  3941                             , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),

  3942                             HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())

  3943 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char

  3944                             , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),

  3945                             HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())

  3946 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int

  3947                             , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),

  3948                             HOTSPOT_JNI_SETINTARRAYREGION_RETURN())

  3949 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long

  3950                             , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),

  3951                             HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())

  3952 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float

  3953                             , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),

  3954                             HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())

  3955 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double

  3956                             , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),

  3957                             HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())

  3958 #endif /* USDT2 */

  3961 //

  3962 // Interception of natives

  3963 //

  3965 // The RegisterNatives call being attempted tried to register with a method that

  3966 // is not native.  Ask JVM TI what prefixes have been specified.  Then check

  3967 // to see if the native method is now wrapped with the prefixes.  See the

  3968 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.

  3969 static Method* find_prefixed_native(KlassHandle k,

  3970                                       Symbol* name, Symbol* signature, TRAPS) {

  3971 #if INCLUDE_JVMTI

  3972   ResourceMark rm(THREAD);

  3973   Method* method;

  3974   int name_len = name->utf8_length();

  3975   char* name_str = name->as_utf8();

  3976   int prefix_count;

  3977   char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);

  3978   for (int i = 0; i < prefix_count; i++) {

  3979     char* prefix = prefixes[i];

  3980     int prefix_len = (int)strlen(prefix);

  3982     // try adding this prefix to the method name and see if it matches another method name

  3983     int trial_len = name_len + prefix_len;

  3984     char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);

  3985     strcpy(trial_name_str, prefix);

  3986     strcat(trial_name_str, name_str);

  3987     TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);

  3988     if (trial_name == NULL) {

  3989       continue; // no such symbol, so this prefix wasn't used, try the next prefix

  3990     }

  3991     method = k()->lookup_method(trial_name, signature);

  3992     if (method == NULL) {

  3993       continue; // signature doesn't match, try the next prefix

  3994     }

  3995     if (method->is_native()) {

  3996       method->set_is_prefixed_native();

  3997       return method; // wahoo, we found a prefixed version of the method, return it

  3998     }

  3999     // found as non-native, so prefix is good, add it, probably just need more prefixes

  4000     name_len = trial_len;

  4001     name_str = trial_name_str;

  4002   }

  4003 #endif // INCLUDE_JVMTI

  4004   return NULL; // not found

  4005 }

  4007 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {

  4008   Method* method = k()->lookup_method(name, signature);

  4009   if (method == NULL) {

  4010     ResourceMark rm;

  4011     stringStream st;

  4012     st.print("Method %s name or signature does not match",

  4013              Method::name_and_sig_as_C_string(k(), name, signature));

  4014     THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);

  4015   }

  4016   if (!method->is_native()) {

  4017     // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)

  4018     method = find_prefixed_native(k, name, signature, THREAD);

  4019     if (method == NULL) {

  4020       ResourceMark rm;

  4021       stringStream st;

  4022       st.print("Method %s is not declared as native",

  4023                Method::name_and_sig_as_C_string(k(), name, signature));

  4024       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);

  4025     }

  4026   }

  4028   if (entry != NULL) {

  4029     method->set_native_function(entry,

  4030       Method::native_bind_event_is_interesting);

  4031   } else {

  4032     method->clear_native_function();

  4033   }

  4034   if (PrintJNIResolving) {

  4035     ResourceMark rm(THREAD);

  4036     tty->print_cr("[Registering JNI native method %s.%s]",

  4037       method->method_holder()->external_name(),

  4038       method->name()->as_C_string());

  4039   }

  4040   return true;

  4041 }

  4043 #ifndef USDT2

  4044 DT_RETURN_MARK_DECL(RegisterNatives, jint);

  4045 #else /* USDT2 */

  4046 DT_RETURN_MARK_DECL(RegisterNatives, jint

  4047                     , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));

  4048 #endif /* USDT2 */

  4050 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,

  4051                                     const JNINativeMethod *methods,

  4052                                     jint nMethods))

  4053   JNIWrapper("RegisterNatives");

  4054 #ifndef USDT2

  4055   DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);

  4056 #else /* USDT2 */

  4057   HOTSPOT_JNI_REGISTERNATIVES_ENTRY(

  4058                                     env, clazz, (void *) methods, nMethods);

  4059 #endif /* USDT2 */

  4060   jint ret = 0;

  4061   DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);

  4063   KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  4065   for (int index = 0; index < nMethods; index++) {

  4066     const char* meth_name = methods[index].name;

  4067     const char* meth_sig = methods[index].signature;

  4068     int meth_name_len = (int)strlen(meth_name);

  4070     // The class should have been loaded (we have an instance of the class

  4071     // passed in) so the method and signature should already be in the symbol

  4072     // table.  If they're not there, the method doesn't exist.

  4073     TempNewSymbol  name = SymbolTable::probe(meth_name, meth_name_len);

  4074     TempNewSymbol  signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));

  4076     if (name == NULL || signature == NULL) {

  4077       ResourceMark rm;

  4078       stringStream st;

  4079       st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);

  4080       // Must return negative value on failure

  4081       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);

  4082     }

  4084     bool res = register_native(h_k, name, signature,

  4085                                (address) methods[index].fnPtr, THREAD);

  4086     if (!res) {

  4087       ret = -1;

  4088       break;

  4089     }

  4090   }

  4091   return ret;

  4092 JNI_END

  4095 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))

  4096   JNIWrapper("UnregisterNatives");

  4097 #ifndef USDT2

  4098   DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);

  4099 #else /* USDT2 */

  4100  HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(

  4101                                      env, clazz);

  4102 #endif /* USDT2 */

  4103   Klass* k   = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));

  4104   //%note jni_2

  4105   if (k->oop_is_instance()) {

  4106     for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {

  4107       Method* m = InstanceKlass::cast(k)->methods()->at(index);

  4108       if (m->is_native()) {

  4109         m->clear_native_function();

  4110         m->set_signature_handler(NULL);

  4111       }

  4112     }

  4113   }

  4114 #ifndef USDT2

  4115   DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);

  4116 #else /* USDT2 */

  4117  HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(

  4118                                       0);

  4119 #endif /* USDT2 */

  4120   return 0;

  4121 JNI_END

  4123 //

  4124 // Monitor functions

  4125 //

  4127 #ifndef USDT2

  4128 DT_RETURN_MARK_DECL(MonitorEnter, jint);

  4129 #else /* USDT2 */

  4130 DT_RETURN_MARK_DECL(MonitorEnter, jint

  4131                     , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));

  4132 #endif /* USDT2 */

  4134 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))

  4135 #ifndef USDT2

  4136   DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);

  4137 #else /* USDT2 */

  4138  HOTSPOT_JNI_MONITORENTER_ENTRY(

  4139                                 env, jobj);

  4140 #endif /* USDT2 */

  4141   jint ret = JNI_ERR;

  4142   DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);

  4144   // If the object is null, we can't do anything with it

  4145   if (jobj == NULL) {

  4146     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);

  4147   }

  4149   Handle obj(thread, JNIHandles::resolve_non_null(jobj));

  4150   ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));

  4151   ret = JNI_OK;

  4152   return ret;

  4153 JNI_END

  4155 #ifndef USDT2

  4156 DT_RETURN_MARK_DECL(MonitorExit, jint);

  4157 #else /* USDT2 */

  4158 DT_RETURN_MARK_DECL(MonitorExit, jint

  4159                     , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));

  4160 #endif /* USDT2 */

  4162 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))

  4163 #ifndef USDT2

  4164   DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);

  4165 #else /* USDT2 */

  4166  HOTSPOT_JNI_MONITOREXIT_ENTRY(

  4167                                env, jobj);

  4168 #endif /* USDT2 */

  4169   jint ret = JNI_ERR;

  4170   DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);

  4172   // Don't do anything with a null object

  4173   if (jobj == NULL) {

  4174     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);

  4175   }

  4177   Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));

  4178   ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));

  4180   ret = JNI_OK;

  4181   return ret;

  4182 JNI_END

  4184 //

  4185 // Extensions

  4186 //

  4188 #ifndef USDT2

  4189 DT_VOID_RETURN_MARK_DECL(GetStringRegion);

  4190 #else /* USDT2 */

  4191 DT_VOID_RETURN_MARK_DECL(GetStringRegion

  4192                          , HOTSPOT_JNI_GETSTRINGREGION_RETURN());

  4193 #endif /* USDT2 */

  4195 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))

  4196   JNIWrapper("GetStringRegion");

  4197 #ifndef USDT2

  4198   DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);

  4199 #else /* USDT2 */

  4200  HOTSPOT_JNI_GETSTRINGREGION_ENTRY(

  4201                                    env, string, start, len, buf);

  4202 #endif /* USDT2 */

  4203   DT_VOID_RETURN_MARK(GetStringRegion);

  4204   oop s = JNIHandles::resolve_non_null(string);

  4205   int s_len = java_lang_String::length(s);

  4206   if (start < 0 || len < 0 || start > s_len - len) {

  4207     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());

  4208   } else {

  4209     if (len > 0) {

  4210       int s_offset = java_lang_String::offset(s);

  4211       typeArrayOop s_value = java_lang_String::value(s);

  4212       memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);

  4213     }

  4214   }

  4215 JNI_END

  4217 #ifndef USDT2

  4218 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);

  4219 #else /* USDT2 */

  4220 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion

  4221                          , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());

  4222 #endif /* USDT2 */

  4224 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))

  4225   JNIWrapper("GetStringUTFRegion");

  4226 #ifndef USDT2

  4227   DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);

  4228 #else /* USDT2 */

  4229  HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(

  4230                                       env, string, start, len, buf);

  4231 #endif /* USDT2 */

  4232   DT_VOID_RETURN_MARK(GetStringUTFRegion);

  4233   oop s = JNIHandles::resolve_non_null(string);

  4234   int s_len = java_lang_String::length(s);

  4235   if (start < 0 || len < 0 || start > s_len - len) {

  4236     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());

  4237   } else {

  4238     //%note jni_7

  4239     if (len > 0) {

  4240       ResourceMark rm(THREAD);

  4241       char *utf_region = java_lang_String::as_utf8_string(s, start, len);

  4242       int utf_len = (int)strlen(utf_region);

  4243       memcpy(buf, utf_region, utf_len);

  4244       buf[utf_len] = 0;

  4245     } else {

  4246       // JDK null-terminates the buffer even in len is zero

  4247       if (buf != NULL) {

  4248         buf[0] = 0;

  4249       }

  4250     }

  4251   }

  4252 JNI_END

  4255 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))

  4256   JNIWrapper("GetPrimitiveArrayCritical");

  4257 #ifndef USDT2

  4258   DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);

  4259 #else /* USDT2 */

  4260  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(

  4261                                              env, array, (uintptr_t *) isCopy);

  4262 #endif /* USDT2 */

  4263   GC_locker::lock_critical(thread);

  4264   if (isCopy != NULL) {

  4265     *isCopy = JNI_FALSE;

  4266   }

  4267   oop a = JNIHandles::resolve_non_null(array);

  4268   assert(a->is_array(), "just checking");

  4269   BasicType type;

  4270   if (a->is_objArray()) {

  4271     type = T_OBJECT;

  4272   } else {

  4273     type = TypeArrayKlass::cast(a->klass())->element_type();

  4274   }

  4275   void* ret = arrayOop(a)->base(type);

  4276 #ifndef USDT2

  4277   DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);

  4278 #else /* USDT2 */

  4279  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(

  4280                                               ret);

  4281 #endif /* USDT2 */

  4282   return ret;

  4283 JNI_END

  4286 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))

  4287   JNIWrapper("ReleasePrimitiveArrayCritical");

  4288 #ifndef USDT2

  4289   DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);

  4290 #else /* USDT2 */

  4291   HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(

  4292                                                   env, array, carray, mode);

  4293 #endif /* USDT2 */

  4294   // The array, carray and mode arguments are ignored

  4295   GC_locker::unlock_critical(thread);

  4296 #ifndef USDT2

  4297   DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);

  4298 #else /* USDT2 */

  4299 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(

  4300 );

  4301 #endif /* USDT2 */

  4302 JNI_END

  4305 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))

  4306   JNIWrapper("GetStringCritical");

  4307 #ifndef USDT2

  4308   DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);

  4309 #else /* USDT2 */

  4310   HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(

  4311                                       env, string, (uintptr_t *) isCopy);

  4312 #endif /* USDT2 */

  4313   GC_locker::lock_critical(thread);

  4314   if (isCopy != NULL) {

  4315     *isCopy = JNI_FALSE;

  4316   }

  4317   oop s = JNIHandles::resolve_non_null(string);

  4318   int s_len = java_lang_String::length(s);

  4319   typeArrayOop s_value = java_lang_String::value(s);

  4320   int s_offset = java_lang_String::offset(s);

  4321   const jchar* ret;

  4322   if (s_len > 0) {

  4323     ret = s_value->char_at_addr(s_offset);

  4324   } else {

  4325     ret = (jchar*) s_value->base(T_CHAR);

  4326   }

  4327 #ifndef USDT2

  4328   DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);

  4329 #else /* USDT2 */

  4330  HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(

  4331                                       (uint16_t *) ret);

  4332 #endif /* USDT2 */

  4333   return ret;

  4334 JNI_END

  4337 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))

  4338   JNIWrapper("ReleaseStringCritical");

  4339 #ifndef USDT2

  4340   DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);

  4341 #else /* USDT2 */

  4342   HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(

  4343                                           env, str, (uint16_t *) chars);

  4344 #endif /* USDT2 */

  4345   // The str and chars arguments are ignored

  4346   GC_locker::unlock_critical(thread);

  4347 #ifndef USDT2

  4348   DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);

  4349 #else /* USDT2 */

  4350 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(

  4351 );

  4352 #endif /* USDT2 */

  4353 JNI_END

  4356 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))

  4357   JNIWrapper("jni_NewWeakGlobalRef");

  4358 #ifndef USDT2

  4359   DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);

  4360 #else /* USDT2 */

  4361  HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(

  4362                                     env, ref);

  4363 #endif /* USDT2 */

  4364   Handle ref_handle(thread, JNIHandles::resolve(ref));

  4365   jweak ret = JNIHandles::make_weak_global(ref_handle);

  4366 #ifndef USDT2

  4367   DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);

  4368 #else /* USDT2 */

  4369  HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(

  4370                                      ret);

  4371 #endif /* USDT2 */

  4372   return ret;

  4373 JNI_END

  4375 // Must be JNI_ENTRY (with HandleMark)

  4376 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))

  4377   JNIWrapper("jni_DeleteWeakGlobalRef");

  4378 #ifndef USDT2

  4379   DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);

  4380 #else /* USDT2 */

  4381   HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(

  4382                                         env, ref);

  4383 #endif /* USDT2 */

  4384   JNIHandles::destroy_weak_global(ref);

  4385 #ifndef USDT2

  4386   DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);

  4387 #else /* USDT2 */

  4388   HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(

  4389                                          );

  4390 #endif /* USDT2 */

  4391 JNI_END

  4394 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))

  4395   JNIWrapper("jni_ExceptionCheck");

  4396 #ifndef USDT2

  4397   DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);

  4398 #else /* USDT2 */

  4399  HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(

  4400                                   env);

  4401 #endif /* USDT2 */

  4402   jni_check_async_exceptions(thread);

  4403   jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;

  4404 #ifndef USDT2

  4405   DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);

  4406 #else /* USDT2 */

  4407  HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(

  4408                                    ret);

  4409 #endif /* USDT2 */

  4410   return ret;

  4411 JNI_END

  4414 // Initialization state for three routines below relating to

  4415 // java.nio.DirectBuffers

  4416 static          jint directBufferSupportInitializeStarted = 0;

  4417 static volatile jint directBufferSupportInitializeEnded   = 0;

  4418 static volatile jint directBufferSupportInitializeFailed  = 0;

  4419 static jclass    bufferClass                 = NULL;

  4420 static jclass    directBufferClass           = NULL;

  4421 static jclass    directByteBufferClass       = NULL;

  4422 static jmethodID directByteBufferConstructor = NULL;

  4423 static jfieldID  directBufferAddressField    = NULL;

  4424 static jfieldID  bufferCapacityField         = NULL;

  4426 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {

  4427   Handle loader;            // null (bootstrap) loader

  4428   Handle protection_domain; // null protection domain

  4430   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);

  4431   jclass result =  find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);

  4433   if (TraceClassResolution && result != NULL) {

  4434     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));

  4435   }

  4436   return result;

  4437 }

  4439 // These lookups are done with the NULL (bootstrap) ClassLoader to

  4440 // circumvent any security checks that would be done by jni_FindClass.

  4441 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))

  4442 {

  4443   if ((bufferClass           = lookupOne(env, "java/nio/Buffer", thread))           == NULL) { return false; }

  4444   if ((directBufferClass     = lookupOne(env, "sun/nio/ch/DirectBuffer", thread))   == NULL) { return false; }

  4445   if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }

  4446   return true;

  4447 }

  4448 JNI_END

  4451 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {

  4452   if (directBufferSupportInitializeFailed) {

  4453     return false;

  4454   }

  4456   if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {

  4457     if (!lookupDirectBufferClasses(env)) {

  4458       directBufferSupportInitializeFailed = 1;

  4459       return false;

  4460     }

  4462     // Make global references for these

  4463     bufferClass           = (jclass) env->NewGlobalRef(bufferClass);

  4464     directBufferClass     = (jclass) env->NewGlobalRef(directBufferClass);

  4465     directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);

  4467     // Get needed field and method IDs

  4468     directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");

  4469     if (env->ExceptionCheck()) {

  4470       env->ExceptionClear();

  4471       directBufferSupportInitializeFailed = 1;

  4472       return false;

  4473     }

  4474     directBufferAddressField    = env->GetFieldID(bufferClass, "address", "J");

  4475     if (env->ExceptionCheck()) {

  4476       env->ExceptionClear();

  4477       directBufferSupportInitializeFailed = 1;

  4478       return false;

  4479     }

  4480     bufferCapacityField         = env->GetFieldID(bufferClass, "capacity", "I");

  4481     if (env->ExceptionCheck()) {

  4482       env->ExceptionClear();

  4483       directBufferSupportInitializeFailed = 1;

  4484       return false;

  4485     }

  4487     if ((directByteBufferConstructor == NULL) ||

  4488         (directBufferAddressField    == NULL) ||

  4489         (bufferCapacityField         == NULL)) {

  4490       directBufferSupportInitializeFailed = 1;

  4491       return false;

  4492     }

  4494     directBufferSupportInitializeEnded = 1;

  4495   } else {

  4496     while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {

  4497       // Set state as yield_all can call os:sleep. On Solaris, yield_all calls

  4498       // os::sleep which requires the VM state transition. On other platforms, it

  4499       // is not necessary. The following call to change the VM state is purposely

  4500       // put inside the loop to avoid potential deadlock when multiple threads

  4501       // try to call this method. See 6791815 for more details.

  4502       ThreadInVMfromNative tivn(thread);

  4503       os::yield_all();

  4504     }

  4505   }

  4507   return !directBufferSupportInitializeFailed;

  4508 }

  4510 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)

  4511 {

  4512   // thread_from_jni_environment() will block if VM is gone.

  4513   JavaThread* thread = JavaThread::thread_from_jni_environment(env);

  4515   JNIWrapper("jni_NewDirectByteBuffer");

  4516 #ifndef USDT2

  4517   DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);

  4518 #else /* USDT2 */

  4519  HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(

  4520                                        env, address, capacity);

  4521 #endif /* USDT2 */

  4523   if (!directBufferSupportInitializeEnded) {

  4524     if (!initializeDirectBufferSupport(env, thread)) {

  4525 #ifndef USDT2

  4526       DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);

  4527 #else /* USDT2 */

  4528       HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(

  4529                                              NULL);

  4530 #endif /* USDT2 */

  4531       return NULL;

  4532     }

  4533   }

  4535   // Being paranoid about accidental sign extension on address

  4536   jlong addr = (jlong) ((uintptr_t) address);

  4537   // NOTE that package-private DirectByteBuffer constructor currently

  4538   // takes int capacity

  4539   jint  cap  = (jint)  capacity;

  4540   jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);

  4541 #ifndef USDT2

  4542   DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);

  4543 #else /* USDT2 */

  4544   HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(

  4545                                          ret);

  4546 #endif /* USDT2 */

  4547   return ret;

  4548 }

  4550 #ifndef USDT2

  4551 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);

  4552 #else /* USDT2 */

  4553 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*

  4554                     , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));

  4555 #endif /* USDT2 */

  4557 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)

  4558 {

  4559   // thread_from_jni_environment() will block if VM is gone.

  4560   JavaThread* thread = JavaThread::thread_from_jni_environment(env);

  4562   JNIWrapper("jni_GetDirectBufferAddress");

  4563 #ifndef USDT2

  4564   DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);

  4565 #else /* USDT2 */

  4566   HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(

  4567                                            env, buf);

  4568 #endif /* USDT2 */

  4569   void* ret = NULL;

  4570   DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);

  4572   if (!directBufferSupportInitializeEnded) {

  4573     if (!initializeDirectBufferSupport(env, thread)) {

  4574       return 0;

  4575     }

  4576   }

  4578   if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {

  4579     return 0;

  4580   }

  4582   ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);

  4583   return ret;

  4584 }

  4586 #ifndef USDT2

  4587 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);

  4588 #else /* USDT2 */

  4589 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong

  4590                     , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));

  4591 #endif /* USDT2 */

  4593 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)

  4594 {

  4595   // thread_from_jni_environment() will block if VM is gone.

  4596   JavaThread* thread = JavaThread::thread_from_jni_environment(env);

  4598   JNIWrapper("jni_GetDirectBufferCapacity");

  4599 #ifndef USDT2

  4600   DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);

  4601 #else /* USDT2 */

  4602   HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(

  4603                                             env, buf);

  4604 #endif /* USDT2 */

  4605   jlong ret = -1;

  4606   DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);

  4608   if (!directBufferSupportInitializeEnded) {

  4609     if (!initializeDirectBufferSupport(env, thread)) {

  4610       ret = 0;

  4611       return ret;

  4612     }

  4613   }

  4615   if (buf == NULL) {

  4616     return -1;

  4617   }

  4619   if (!env->IsInstanceOf(buf, directBufferClass)) {

  4620     return -1;

  4621   }

  4623   // NOTE that capacity is currently an int in the implementation

  4624   ret = env->GetIntField(buf, bufferCapacityField);

  4625   return ret;

  4626 }

  4629 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))

  4630   JNIWrapper("GetVersion");

  4631 #ifndef USDT2

  4632   DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);

  4633 #else /* USDT2 */

  4634   HOTSPOT_JNI_GETVERSION_ENTRY(

  4635                                env);

  4636 #endif /* USDT2 */

  4637 #ifndef USDT2

  4638   DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);

  4639 #else /* USDT2 */

  4640   HOTSPOT_JNI_GETVERSION_RETURN(

  4641                                 CurrentVersion);

  4642 #endif /* USDT2 */

  4643   return CurrentVersion;

  4644 JNI_END

  4646 extern struct JavaVM_ main_vm;

  4648 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))

  4649   JNIWrapper("jni_GetJavaVM");

  4650 #ifndef USDT2

  4651   DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);

  4652 #else /* USDT2 */

  4653   HOTSPOT_JNI_GETJAVAVM_ENTRY(

  4654                               env, (void **) vm);

  4655 #endif /* USDT2 */

  4656   *vm  = (JavaVM *)(&main_vm);

  4657 #ifndef USDT2

  4658   DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);

  4659 #else /* USDT2 */

  4660   HOTSPOT_JNI_GETJAVAVM_RETURN(

  4661                                JNI_OK);

  4662 #endif /* USDT2 */

  4663   return JNI_OK;

  4664 JNI_END

  4666 // Structure containing all jni functions

  4667 struct JNINativeInterface_ jni_NativeInterface = {

  4668     NULL,

  4669     NULL,

  4670     NULL,

  4672     NULL,

  4674     jni_GetVersion,

  4676     jni_DefineClass,

  4677     jni_FindClass,

  4679     jni_FromReflectedMethod,

  4680     jni_FromReflectedField,

  4682     jni_ToReflectedMethod,

  4684     jni_GetSuperclass,

  4685     jni_IsAssignableFrom,

  4687     jni_ToReflectedField,

  4689     jni_Throw,

  4690     jni_ThrowNew,

  4691     jni_ExceptionOccurred,

  4692     jni_ExceptionDescribe,

  4693     jni_ExceptionClear,

  4694     jni_FatalError,

  4696     jni_PushLocalFrame,

  4697     jni_PopLocalFrame,

  4699     jni_NewGlobalRef,

  4700     jni_DeleteGlobalRef,

  4701     jni_DeleteLocalRef,

  4702     jni_IsSameObject,

  4704     jni_NewLocalRef,

  4705     jni_EnsureLocalCapacity,

  4707     jni_AllocObject,

  4708     jni_NewObject,

  4709     jni_NewObjectV,

  4710     jni_NewObjectA,

  4712     jni_GetObjectClass,

  4713     jni_IsInstanceOf,

  4715     jni_GetMethodID,

  4717     jni_CallObjectMethod,

  4718     jni_CallObjectMethodV,

  4719     jni_CallObjectMethodA,

  4720     jni_CallBooleanMethod,

  4721     jni_CallBooleanMethodV,

  4722     jni_CallBooleanMethodA,

  4723     jni_CallByteMethod,

  4724     jni_CallByteMethodV,

  4725     jni_CallByteMethodA,

  4726     jni_CallCharMethod,

  4727     jni_CallCharMethodV,

  4728     jni_CallCharMethodA,

  4729     jni_CallShortMethod,

  4730     jni_CallShortMethodV,

  4731     jni_CallShortMethodA,

  4732     jni_CallIntMethod,

  4733     jni_CallIntMethodV,

  4734     jni_CallIntMethodA,

  4735     jni_CallLongMethod,

  4736     jni_CallLongMethodV,

  4737     jni_CallLongMethodA,

  4738     jni_CallFloatMethod,

  4739     jni_CallFloatMethodV,

  4740     jni_CallFloatMethodA,

  4741     jni_CallDoubleMethod,

  4742     jni_CallDoubleMethodV,

  4743     jni_CallDoubleMethodA,

  4744     jni_CallVoidMethod,

  4745     jni_CallVoidMethodV,

  4746     jni_CallVoidMethodA,

  4748     jni_CallNonvirtualObjectMethod,

  4749     jni_CallNonvirtualObjectMethodV,

  4750     jni_CallNonvirtualObjectMethodA,

  4751     jni_CallNonvirtualBooleanMethod,

  4752     jni_CallNonvirtualBooleanMethodV,

  4753     jni_CallNonvirtualBooleanMethodA,

  4754     jni_CallNonvirtualByteMethod,

  4755     jni_CallNonvirtualByteMethodV,

  4756     jni_CallNonvirtualByteMethodA,

  4757     jni_CallNonvirtualCharMethod,

  4758     jni_CallNonvirtualCharMethodV,

  4759     jni_CallNonvirtualCharMethodA,

  4760     jni_CallNonvirtualShortMethod,

  4761     jni_CallNonvirtualShortMethodV,

  4762     jni_CallNonvirtualShortMethodA,

  4763     jni_CallNonvirtualIntMethod,

  4764     jni_CallNonvirtualIntMethodV,

  4765     jni_CallNonvirtualIntMethodA,

  4766     jni_CallNonvirtualLongMethod,

  4767     jni_CallNonvirtualLongMethodV,

  4768     jni_CallNonvirtualLongMethodA,

  4769     jni_CallNonvirtualFloatMethod,

  4770     jni_CallNonvirtualFloatMethodV,

  4771     jni_CallNonvirtualFloatMethodA,

  4772     jni_CallNonvirtualDoubleMethod,

  4773     jni_CallNonvirtualDoubleMethodV,

  4774     jni_CallNonvirtualDoubleMethodA,

  4775     jni_CallNonvirtualVoidMethod,

  4776     jni_CallNonvirtualVoidMethodV,

  4777     jni_CallNonvirtualVoidMethodA,

  4779     jni_GetFieldID,

  4781     jni_GetObjectField,

  4782     jni_GetBooleanField,

  4783     jni_GetByteField,

  4784     jni_GetCharField,

  4785     jni_GetShortField,

  4786     jni_GetIntField,

  4787     jni_GetLongField,

  4788     jni_GetFloatField,

  4789     jni_GetDoubleField,

  4791     jni_SetObjectField,

  4792     jni_SetBooleanField,

  4793     jni_SetByteField,

  4794     jni_SetCharField,

  4795     jni_SetShortField,

  4796     jni_SetIntField,

  4797     jni_SetLongField,

  4798     jni_SetFloatField,

  4799     jni_SetDoubleField,

  4801     jni_GetStaticMethodID,

  4803     jni_CallStaticObjectMethod,

  4804     jni_CallStaticObjectMethodV,

  4805     jni_CallStaticObjectMethodA,

  4806     jni_CallStaticBooleanMethod,

  4807     jni_CallStaticBooleanMethodV,

  4808     jni_CallStaticBooleanMethodA,

  4809     jni_CallStaticByteMethod,

  4810     jni_CallStaticByteMethodV,

  4811     jni_CallStaticByteMethodA,

  4812     jni_CallStaticCharMethod,

  4813     jni_CallStaticCharMethodV,

  4814     jni_CallStaticCharMethodA,

  4815     jni_CallStaticShortMethod,

  4816     jni_CallStaticShortMethodV,

  4817     jni_CallStaticShortMethodA,

  4818     jni_CallStaticIntMethod,

  4819     jni_CallStaticIntMethodV,

  4820     jni_CallStaticIntMethodA,

  4821     jni_CallStaticLongMethod,

  4822     jni_CallStaticLongMethodV,

  4823     jni_CallStaticLongMethodA,

  4824     jni_CallStaticFloatMethod,

  4825     jni_CallStaticFloatMethodV,

  4826     jni_CallStaticFloatMethodA,

  4827     jni_CallStaticDoubleMethod,

  4828     jni_CallStaticDoubleMethodV,

  4829     jni_CallStaticDoubleMethodA,

  4830     jni_CallStaticVoidMethod,

  4831     jni_CallStaticVoidMethodV,

  4832     jni_CallStaticVoidMethodA,

  4834     jni_GetStaticFieldID,

  4836     jni_GetStaticObjectField,

  4837     jni_GetStaticBooleanField,

  4838     jni_GetStaticByteField,

  4839     jni_GetStaticCharField,

  4840     jni_GetStaticShortField,

  4841     jni_GetStaticIntField,

  4842     jni_GetStaticLongField,

  4843     jni_GetStaticFloatField,

  4844     jni_GetStaticDoubleField,

  4846     jni_SetStaticObjectField,

  4847     jni_SetStaticBooleanField,

  4848     jni_SetStaticByteField,

  4849     jni_SetStaticCharField,

  4850     jni_SetStaticShortField,

  4851     jni_SetStaticIntField,

  4852     jni_SetStaticLongField,

  4853     jni_SetStaticFloatField,

  4854     jni_SetStaticDoubleField,

  4856     jni_NewString,

  4857     jni_GetStringLength,

  4858     jni_GetStringChars,

  4859     jni_ReleaseStringChars,

  4861     jni_NewStringUTF,

  4862     jni_GetStringUTFLength,

  4863     jni_GetStringUTFChars,

  4864     jni_ReleaseStringUTFChars,

  4866     jni_GetArrayLength,

  4868     jni_NewObjectArray,

  4869     jni_GetObjectArrayElement,

  4870     jni_SetObjectArrayElement,

  4872     jni_NewBooleanArray,

  4873     jni_NewByteArray,

  4874     jni_NewCharArray,

  4875     jni_NewShortArray,

  4876     jni_NewIntArray,

  4877     jni_NewLongArray,

  4878     jni_NewFloatArray,

  4879     jni_NewDoubleArray,

  4881     jni_GetBooleanArrayElements,

  4882     jni_GetByteArrayElements,

  4883     jni_GetCharArrayElements,

  4884     jni_GetShortArrayElements,

  4885     jni_GetIntArrayElements,

  4886     jni_GetLongArrayElements,

  4887     jni_GetFloatArrayElements,

  4888     jni_GetDoubleArrayElements,

  4890     jni_ReleaseBooleanArrayElements,

  4891     jni_ReleaseByteArrayElements,

  4892     jni_ReleaseCharArrayElements,

  4893     jni_ReleaseShortArrayElements,

  4894     jni_ReleaseIntArrayElements,

  4895     jni_ReleaseLongArrayElements,

  4896     jni_ReleaseFloatArrayElements,

  4897     jni_ReleaseDoubleArrayElements,

  4899     jni_GetBooleanArrayRegion,

  4900     jni_GetByteArrayRegion,

  4901     jni_GetCharArrayRegion,

  4902     jni_GetShortArrayRegion,

  4903     jni_GetIntArrayRegion,

  4904     jni_GetLongArrayRegion,

  4905     jni_GetFloatArrayRegion,

  4906     jni_GetDoubleArrayRegion,

  4908     jni_SetBooleanArrayRegion,

  4909     jni_SetByteArrayRegion,

  4910     jni_SetCharArrayRegion,

  4911     jni_SetShortArrayRegion,

  4912     jni_SetIntArrayRegion,

  4913     jni_SetLongArrayRegion,

  4914     jni_SetFloatArrayRegion,

  4915     jni_SetDoubleArrayRegion,

  4917     jni_RegisterNatives,

  4918     jni_UnregisterNatives,

  4920     jni_MonitorEnter,

  4921     jni_MonitorExit,

  4923     jni_GetJavaVM,

  4925     jni_GetStringRegion,

  4926     jni_GetStringUTFRegion,

  4928     jni_GetPrimitiveArrayCritical,

  4929     jni_ReleasePrimitiveArrayCritical,

  4931     jni_GetStringCritical,

  4932     jni_ReleaseStringCritical,

  4934     jni_NewWeakGlobalRef,

  4935     jni_DeleteWeakGlobalRef,

  4937     jni_ExceptionCheck,

  4939     jni_NewDirectByteBuffer,

  4940     jni_GetDirectBufferAddress,

  4941     jni_GetDirectBufferCapacity,

  4943     // New 1_6 features

  4945     jni_GetObjectRefType

  4946 };

  4949 // For jvmti use to modify jni function table.

  4950 // Java threads in native contiues to run until it is transitioned

  4951 // to VM at safepoint. Before the transition or before it is blocked

  4952 // for safepoint it may access jni function table. VM could crash if

  4953 // any java thread access the jni function table in the middle of memcpy.

  4954 // To avoid this each function pointers are copied automically.

  4955 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {

  4956   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");

  4957   intptr_t *a = (intptr_t *) jni_functions();

  4958   intptr_t *b = (intptr_t *) new_jni_NativeInterface;

  4959   for (uint i=0; i <  sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {

  4960     Atomic::store_ptr(*b++, a++);

  4961   }

  4962 }

  4964 void quicken_jni_functions() {

  4965   // Replace Get<Primitive>Field with fast versions

  4966   if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()

  4967       && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls

  4968 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)

  4969       // windows x86 currently needs SEH wrapper and the gain of the fast

  4970       // versions currently isn't certain for server vm on uniprocessor.

  4971       && os::is_MP()

  4972 #endif

  4973   ) {

  4974     address func;

  4975     func = JNI_FastGetField::generate_fast_get_boolean_field();

  4976     if (func != (address)-1) {

  4977       jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;

  4978     }

  4979     func = JNI_FastGetField::generate_fast_get_byte_field();

  4980     if (func != (address)-1) {

  4981       jni_NativeInterface.GetByteField = (GetByteField_t)func;

  4982     }

  4983     func = JNI_FastGetField::generate_fast_get_char_field();

  4984     if (func != (address)-1) {

  4985       jni_NativeInterface.GetCharField = (GetCharField_t)func;

  4986     }

  4987     func = JNI_FastGetField::generate_fast_get_short_field();

  4988     if (func != (address)-1) {

  4989       jni_NativeInterface.GetShortField = (GetShortField_t)func;

  4990     }

  4991     func = JNI_FastGetField::generate_fast_get_int_field();

  4992     if (func != (address)-1) {

  4993       jni_NativeInterface.GetIntField = (GetIntField_t)func;

  4994     }

  4995     func = JNI_FastGetField::generate_fast_get_long_field();

  4996     if (func != (address)-1) {

  4997       jni_NativeInterface.GetLongField = (GetLongField_t)func;

  4998     }

  4999     func = JNI_FastGetField::generate_fast_get_float_field();

  5000     if (func != (address)-1) {

  5001       jni_NativeInterface.GetFloatField = (GetFloatField_t)func;

  5002     }

  5003     func = JNI_FastGetField::generate_fast_get_double_field();

  5004     if (func != (address)-1) {

  5005       jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;

  5006     }

  5007   }

  5008 }

  5010 // Returns the function structure

  5011 struct JNINativeInterface_* jni_functions() {

  5012 #if INCLUDE_JNI_CHECK

  5013   if (CheckJNICalls) return jni_functions_check();

  5014 #endif // INCLUDE_JNI_CHECK

  5015   return &jni_NativeInterface;

  5016 }

  5018 // Returns the function structure

  5019 struct JNINativeInterface_* jni_functions_nocheck() {

  5020   return &jni_NativeInterface;

  5021 }

  5023 static void post_thread_start_event(const JavaThread* jt) {

  5024   assert(jt != NULL, "invariant");

  5025   EventThreadStart event;

  5026   if (event.should_commit()) {

  5027     event.set_thread(JFR_THREAD_ID(jt));

  5028     event.commit();

  5029   }

  5030 }

  5032 // Invocation API

  5035 // Forward declaration

  5036 extern const struct JNIInvokeInterface_ jni_InvokeInterface;

  5038 // Global invocation API vars

  5039 volatile jint vm_created = 0;

  5040 // Indicate whether it is safe to recreate VM

  5041 volatile jint safe_to_recreate_vm = 1;

  5042 struct JavaVM_ main_vm = {&jni_InvokeInterface};

  5045 #define JAVASTACKSIZE (400 * 1024)    /* Default size of a thread java stack */

  5046 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };

  5048 #ifndef USDT2

  5049 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);

  5050 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);

  5051 #else /* USDT2 */

  5052 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint

  5053                     , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));

  5054 #endif /* USDT2 */

  5056 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {

  5057 #ifndef USDT2

  5058   HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);

  5059 #else /* USDT2 */

  5060   HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(

  5061                                              args_);

  5062 #endif /* USDT2 */

  5063   JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;

  5064   jint ret = JNI_ERR;

  5065   DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);

  5067   if (Threads::is_supported_jni_version(args->version)) {

  5068     ret = JNI_OK;

  5069   }

  5070   // 1.1 style no longer supported in hotspot.

  5071   // According the JNI spec, we should update args->version on return.

  5072   // We also use the structure to communicate with launcher about default

  5073   // stack size.

  5074   if (args->version == JNI_VERSION_1_1) {

  5075     args->version = JNI_VERSION_1_2;

  5076     // javaStackSize is int in arguments structure

  5077     assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");

  5078     args->javaStackSize = (jint)(ThreadStackSize * K);

  5079   }

  5080   return ret;

  5081 }

  5083 #ifndef PRODUCT

  5085 #include "gc_implementation/shared/gcTimer.hpp"

  5086 #include "gc_interface/collectedHeap.hpp"

  5087 #if INCLUDE_ALL_GCS

  5088 #include "gc_implementation/g1/heapRegionRemSet.hpp"

  5089 #endif

  5090 #include "memory/guardedMemory.hpp"

  5091 #include "utilities/quickSort.hpp"

  5092 #include "utilities/ostream.hpp"

  5093 #if INCLUDE_VM_STRUCTS

  5094 #include "runtime/vmStructs.hpp"

  5095 #endif

  5097 #define run_unit_test(unit_test_function_call)              \

  5098   tty->print_cr("Running test: " #unit_test_function_call); \

  5099   unit_test_function_call

  5101 // Forward declaration

  5102 void TestOS_test();

  5103 void TestReservedSpace_test();

  5104 void TestReserveMemorySpecial_test();

  5105 void TestVirtualSpace_test();

  5106 void TestMetaspaceAux_test();

  5107 void SpaceManager_test_adjust_initial_chunk_size();

  5108 void TestMetachunk_test();

  5109 void TestVirtualSpaceNode_test();

  5110 void TestNewSize_test();

  5111 void TestKlass_test();

  5112 void Test_linked_list();

  5113 void TestChunkedList_test();

  5114 #if INCLUDE_ALL_GCS

  5115 void TestOldFreeSpaceCalculation_test();

  5116 void TestG1BiasedArray_test();

  5117 void TestBufferingOopClosure_test();

  5118 void TestCodeCacheRemSet_test();

  5119 void FreeRegionList_test();

  5120 void ChunkManager_test_list_index();

  5121 #endif

  5123 void execute_internal_vm_tests() {

  5124   if (ExecuteInternalVMTests) {

  5125     tty->print_cr("Running internal VM tests");

  5126     run_unit_test(TestOS_test());

  5127     run_unit_test(TestReservedSpace_test());

  5128     run_unit_test(TestReserveMemorySpecial_test());

  5129     run_unit_test(TestVirtualSpace_test());

  5130     run_unit_test(TestMetaspaceAux_test());

  5131     run_unit_test(TestMetachunk_test());

  5132     run_unit_test(TestVirtualSpaceNode_test());

  5133     run_unit_test(GlobalDefinitions::test_globals());

  5134     run_unit_test(GlobalDefinitions::test_proper_unit());

  5135     run_unit_test(GCTimerAllTest::all());

  5136     run_unit_test(arrayOopDesc::test_max_array_length());

  5137     run_unit_test(CollectedHeap::test_is_in());

  5138     run_unit_test(QuickSort::test_quick_sort());

  5139     run_unit_test(GuardedMemory::test_guarded_memory());

  5140     run_unit_test(AltHashing::test_alt_hash());

  5141     run_unit_test(test_loggc_filename());

  5142     run_unit_test(test_snprintf());

  5143     run_unit_test(TestNewSize_test());

  5144     run_unit_test(TestKlass_test());

  5145     run_unit_test(Test_linked_list());

  5146     run_unit_test(TestChunkedList_test());

  5147     run_unit_test(ObjectMonitor::sanity_checks());

  5148 #if INCLUDE_VM_STRUCTS

  5149     run_unit_test(VMStructs::test());

  5150 #endif

  5151 #if INCLUDE_ALL_GCS

  5152     run_unit_test(TestOldFreeSpaceCalculation_test());

  5153     run_unit_test(TestG1BiasedArray_test());

  5154     run_unit_test(HeapRegionRemSet::test_prt());

  5155     run_unit_test(SpaceManager_test_adjust_initial_chunk_size());

  5156     run_unit_test(ChunkManager_test_list_index());

  5157     run_unit_test(TestBufferingOopClosure_test());

  5158     run_unit_test(TestCodeCacheRemSet_test());

  5159     if (UseG1GC) {

  5160       run_unit_test(FreeRegionList_test());

  5161     }

  5162 #endif

  5163     tty->print_cr("All internal VM tests passed");

  5164   }

  5165 }

  5167 #undef run_unit_test

  5169 #endif

  5171 #ifndef USDT2

  5172 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);

  5173 DT_RETURN_MARK_DECL(CreateJavaVM, jint);

  5174 #else /* USDT2 */

  5175 DT_RETURN_MARK_DECL(CreateJavaVM, jint

  5176                     , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));

  5177 #endif /* USDT2 */

  5179 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {

  5180 #ifndef USDT2

  5181   HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);

  5182 #else /* USDT2 */

  5183   HOTSPOT_JNI_CREATEJAVAVM_ENTRY(

  5184                                  (void **) vm, penv, args);

  5185 #endif /* USDT2 */

  5187   jint result = JNI_ERR;

  5188   DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);

  5190   // We're about to use Atomic::xchg for synchronization.  Some Zero

  5191   // platforms use the GCC builtin __sync_lock_test_and_set for this,

  5192   // but __sync_lock_test_and_set is not guaranteed to do what we want

  5193   // on all architectures.  So we check it works before relying on it.

  5194 #if defined(ZERO) && defined(ASSERT)

  5195   {

  5196     jint a = 0xcafebabe;

  5197     jint b = Atomic::xchg(0xdeadbeef, &a);

  5198     void *c = &a;

  5199     void *d = Atomic::xchg_ptr(&b, &c);

  5200     assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");

  5201     assert(c == &b && d == &a, "Atomic::xchg_ptr() works");

  5202   }

  5203 #endif // ZERO && ASSERT

  5205   // At the moment it's only possible to have one Java VM,

  5206   // since some of the runtime state is in global variables.

  5208   // We cannot use our mutex locks here, since they only work on

  5209   // Threads. We do an atomic compare and exchange to ensure only

  5210   // one thread can call this method at a time

  5212   // We use Atomic::xchg rather than Atomic::add/dec since on some platforms

  5213   // the add/dec implementations are dependent on whether we are running

  5214   // on a multiprocessor, and at this stage of initialization the os::is_MP

  5215   // function used to determine this will always return false. Atomic::xchg

  5216   // does not have this problem.

  5217   if (Atomic::xchg(1, &vm_created) == 1) {

  5218     return JNI_EEXIST;   // already created, or create attempt in progress

  5219   }

  5220   if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {

  5221     return JNI_ERR;  // someone tried and failed and retry not allowed.

  5222   }

  5224   assert(vm_created == 1, "vm_created is true during the creation");

  5226   /**

  5227    * Certain errors during initialization are recoverable and do not

  5228    * prevent this method from being called again at a later time

  5229    * (perhaps with different arguments).  However, at a certain

  5230    * point during initialization if an error occurs we cannot allow

  5231    * this function to be called again (or it will crash).  In those

  5232    * situations, the 'canTryAgain' flag is set to false, which atomically

  5233    * sets safe_to_recreate_vm to 1, such that any new call to

  5234    * JNI_CreateJavaVM will immediately fail using the above logic.

  5235    */

  5236   bool can_try_again = true;

  5238   result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);

  5239   if (result == JNI_OK) {

  5240     JavaThread *thread = JavaThread::current();

  5241     /* thread is thread_in_vm here */

  5242     *vm = (JavaVM *)(&main_vm);

  5243     *(JNIEnv**)penv = thread->jni_environment();

  5245     // Tracks the time application was running before GC

  5246     RuntimeService::record_application_start();

  5248     // Notify JVMTI

  5249     if (JvmtiExport::should_post_thread_life()) {

  5250        JvmtiExport::post_thread_start(thread);

  5251     }

  5253     post_thread_start_event(thread);

  5255 #ifndef PRODUCT

  5256   #ifndef CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED

  5257     #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()

  5258   #endif

  5260     // Check if we should compile all classes on bootclasspath

  5261     if (CompileTheWorld) ClassLoader::compile_the_world();

  5262     if (ReplayCompiles) ciReplay::replay(thread);

  5264     // Some platforms (like Win*) need a wrapper around these test

  5265     // functions in order to properly handle error conditions.

  5266     CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);

  5267     CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);

  5268 #endif

  5270     // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.

  5271     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);

  5272   } else {

  5273     if (can_try_again) {

  5274       // reset safe_to_recreate_vm to 1 so that retrial would be possible

  5275       safe_to_recreate_vm = 1;

  5276     }

  5278     // Creation failed. We must reset vm_created

  5279     *vm = 0;

  5280     *(JNIEnv**)penv = 0;

  5281     // reset vm_created last to avoid race condition. Use OrderAccess to

  5282     // control both compiler and architectural-based reordering.

  5283     OrderAccess::release_store(&vm_created, 0);

  5284   }

  5286   return result;

  5287 }

  5289 #ifndef USDT2

  5290 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \

  5291   JavaVM**, jsize, jsize*);

  5292 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);

  5293 #endif /* !USDT2 */

  5295 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {

  5296   // See bug 4367188, the wrapper can sometimes cause VM crashes

  5297   // JNIWrapper("GetCreatedJavaVMs");

  5298 #ifndef USDT2

  5299   HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \

  5300     vm_buf, bufLen, numVMs);

  5301 #else /* USDT2 */

  5302   HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(

  5303                                       (void **) vm_buf, bufLen, (uintptr_t *) numVMs);

  5304 #endif /* USDT2 */

  5305   if (vm_created) {

  5306     if (numVMs != NULL) *numVMs = 1;

  5307     if (bufLen > 0)     *vm_buf = (JavaVM *)(&main_vm);

  5308   } else {

  5309     if (numVMs != NULL) *numVMs = 0;

  5310   }

  5311 #ifndef USDT2

  5312   HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);

  5313 #else /* USDT2 */

  5314   HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(

  5315                                     JNI_OK);

  5316 #endif /* USDT2 */

  5317   return JNI_OK;

  5318 }

  5320 extern "C" {

  5322 #ifndef USDT2

  5323 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);

  5324 #else /* USDT2 */

  5325 DT_RETURN_MARK_DECL(DestroyJavaVM, jint

  5326                     , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));

  5327 #endif /* USDT2 */

  5329 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {

  5330 #ifndef USDT2

  5331   DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);

  5332 #else /* USDT2 */

  5333   HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(

  5334                                   vm);

  5335 #endif /* USDT2 */

  5336   jint res = JNI_ERR;

  5337   DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);

  5339   if (!vm_created) {

  5340     res = JNI_ERR;

  5341     return res;

  5342   }

  5344   JNIWrapper("DestroyJavaVM");

  5345   JNIEnv *env;

  5346   JavaVMAttachArgs destroyargs;

  5347   destroyargs.version = CurrentVersion;

  5348   destroyargs.name = (char *)"DestroyJavaVM";

  5349   destroyargs.group = NULL;

  5350   res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);

  5351   if (res != JNI_OK) {

  5352     return res;

  5353   }

  5355   // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.

  5356   JavaThread* thread = JavaThread::current();

  5357   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);

  5358   if (Threads::destroy_vm()) {

  5359     // Should not change thread state, VM is gone

  5360     vm_created = false;

  5361     res = JNI_OK;

  5362     return res;

  5363   } else {

  5364     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);

  5365     res = JNI_ERR;

  5366     return res;

  5367   }

  5368 }

  5371 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {

  5372   JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;

  5374   // Check below commented out from JDK1.2fcs as well

  5375   /*

  5376   if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {

  5377     return JNI_EVERSION;

  5378   }

  5379   */

  5381   Thread* t = ThreadLocalStorage::get_thread_slow();

  5382   if (t != NULL) {

  5383     // If the thread has been attached this operation is a no-op

  5384     *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();

  5385     return JNI_OK;

  5386   }

  5388   // Create a thread and mark it as attaching so it will be skipped by the

  5389   // ThreadsListEnumerator - see CR 6404306

  5390   JavaThread* thread = new JavaThread(true);

  5392   // Set correct safepoint info. The thread is going to call into Java when

  5393   // initializing the Java level thread object. Hence, the correct state must

  5394   // be set in order for the Safepoint code to deal with it correctly.

  5395   thread->set_thread_state(_thread_in_vm);

  5396   // Must do this before initialize_thread_local_storage

  5397   thread->record_stack_base_and_size();

  5399   thread->initialize_thread_local_storage();

  5401   if (!os::create_attached_thread(thread)) {

  5402     delete thread;

  5403     return JNI_ERR;

  5404   }

  5405   // Enable stack overflow checks

  5406   thread->create_stack_guard_pages();

  5408   thread->initialize_tlab();

  5410   thread->cache_global_variables();

  5412   // Crucial that we do not have a safepoint check for this thread, since it has

  5413   // not been added to the Thread list yet.

  5414   { Threads_lock->lock_without_safepoint_check();

  5415     // This must be inside this lock in order to get FullGCALot to work properly, i.e., to

  5416     // avoid this thread trying to do a GC before it is added to the thread-list

  5417     thread->set_active_handles(JNIHandleBlock::allocate_block());

  5418     Threads::add(thread, daemon);

  5419     Threads_lock->unlock();

  5420   }

  5421   // Create thread group and name info from attach arguments

  5422   oop group = NULL;

  5423   char* thread_name = NULL;

  5424   if (args != NULL && Threads::is_supported_jni_version(args->version)) {

  5425     group = JNIHandles::resolve(args->group);

  5426     thread_name = args->name; // may be NULL

  5427   }

  5428   if (group == NULL) group = Universe::main_thread_group();

  5430   // Create Java level thread object and attach it to this thread

  5431   bool attach_failed = false;

  5432   {

  5433     EXCEPTION_MARK;

  5434     HandleMark hm(THREAD);

  5435     Handle thread_group(THREAD, group);

  5436     thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);

  5437     if (HAS_PENDING_EXCEPTION) {

  5438       CLEAR_PENDING_EXCEPTION;

  5439       // cleanup outside the handle mark.

  5440       attach_failed = true;

  5441     }

  5442   }

  5444   if (attach_failed) {

  5445     // Added missing cleanup

  5446     thread->cleanup_failed_attach_current_thread();

  5447     return JNI_ERR;

  5448   }

  5450   // mark the thread as no longer attaching

  5451   // this uses a fence to push the change through so we don't have

  5452   // to regrab the threads_lock

  5453   thread->set_done_attaching_via_jni();

  5455   // Set java thread status.

  5456   java_lang_Thread::set_thread_status(thread->threadObj(),

  5457               java_lang_Thread::RUNNABLE);

  5459   // Notify the debugger

  5460   if (JvmtiExport::should_post_thread_life()) {

  5461     JvmtiExport::post_thread_start(thread);

  5462   }

  5464   post_thread_start_event(thread);

  5466   *(JNIEnv**)penv = thread->jni_environment();

  5468   // Now leaving the VM, so change thread_state. This is normally automatically taken care

  5469   // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by

  5470   // using ThreadStateTransition::transition, we do a callback to the safepoint code if

  5471   // needed.

  5473   ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);

  5475   // Perform any platform dependent FPU setup

  5476   os::setup_fpu();

  5478   return JNI_OK;

  5479 }

  5482 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {

  5483 #ifndef USDT2

  5484   DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);

  5485 #else /* USDT2 */

  5486   HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(

  5487                                         vm, penv, _args);

  5488 #endif /* USDT2 */

  5489   if (!vm_created) {

  5490 #ifndef USDT2

  5491     DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);

  5492 #else /* USDT2 */

  5493   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(

  5494                                          (uint32_t) JNI_ERR);

  5495 #endif /* USDT2 */

  5496     return JNI_ERR;

  5497   }

  5499   JNIWrapper("AttachCurrentThread");

  5500   jint ret = attach_current_thread(vm, penv, _args, false);

  5501 #ifndef USDT2

  5502   DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);

  5503 #else /* USDT2 */

  5504   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(

  5505                                          ret);

  5506 #endif /* USDT2 */

  5507   return ret;

  5508 }

  5511 jint JNICALL jni_DetachCurrentThread(JavaVM *vm)  {

  5512 #ifndef USDT2

  5513   DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);

  5514 #else /* USDT2 */

  5515   HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(

  5516                                         vm);

  5517 #endif /* USDT2 */

  5518   VM_Exit::block_if_vm_exited();

  5520   JNIWrapper("DetachCurrentThread");

  5522   // If the thread has been deattacted the operations is a no-op

  5523   if (ThreadLocalStorage::thread() == NULL) {

  5524 #ifndef USDT2

  5525     DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);

  5526 #else /* USDT2 */

  5527   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(

  5528                                          JNI_OK);

  5529 #endif /* USDT2 */

  5530     return JNI_OK;

  5531   }

  5533   JavaThread* thread = JavaThread::current();

  5534   if (thread->has_last_Java_frame()) {

  5535 #ifndef USDT2

  5536     DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);

  5537 #else /* USDT2 */

  5538   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(

  5539                                          (uint32_t) JNI_ERR);

  5540 #endif /* USDT2 */

  5541     // Can't detach a thread that's running java, that can't work.

  5542     return JNI_ERR;

  5543   }

  5545   // Safepoint support. Have to do call-back to safepoint code, if in the

  5546   // middel of a safepoint operation

  5547   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);

  5549   // XXX: Note that JavaThread::exit() call below removes the guards on the

  5550   // stack pages set up via enable_stack_{red,yellow}_zone() calls

  5551   // above in jni_AttachCurrentThread. Unfortunately, while the setting

  5552   // of the guards is visible in jni_AttachCurrentThread above,

  5553   // the removal of the guards is buried below in JavaThread::exit()

  5554   // here. The abstraction should be more symmetrically either exposed

  5555   // or hidden (e.g. it could probably be hidden in the same

  5556   // (platform-dependent) methods where we do alternate stack

  5557   // maintenance work?)

  5558   thread->exit(false, JavaThread::jni_detach);

  5559   delete thread;

  5561 #ifndef USDT2

  5562   DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);

  5563 #else /* USDT2 */

  5564   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(

  5565                                          JNI_OK);

  5566 #endif /* USDT2 */

  5567   return JNI_OK;

  5568 }

  5570 #ifndef USDT2

  5571 DT_RETURN_MARK_DECL(GetEnv, jint);

  5572 #else /* USDT2 */

  5573 DT_RETURN_MARK_DECL(GetEnv, jint

  5574                     , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));

  5575 #endif /* USDT2 */

  5577 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {

  5578 #ifndef USDT2

  5579   DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);

  5580 #else /* USDT2 */

  5581   HOTSPOT_JNI_GETENV_ENTRY(

  5582                            vm, penv, version);

  5583 #endif /* USDT2 */

  5584   jint ret = JNI_ERR;

  5585   DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);

  5587   if (!vm_created) {

  5588     *penv = NULL;

  5589     ret = JNI_EDETACHED;

  5590     return ret;

  5591   }

  5593   if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {

  5594     return ret;

  5595   }

  5597 #ifndef JVMPI_VERSION_1

  5598 // need these in order to be polite about older agents

  5599 #define JVMPI_VERSION_1   ((jint)0x10000001)

  5600 #define JVMPI_VERSION_1_1 ((jint)0x10000002)

  5601 #define JVMPI_VERSION_1_2 ((jint)0x10000003)

  5602 #endif // !JVMPI_VERSION_1

  5604   Thread* thread = ThreadLocalStorage::thread();

  5605   if (thread != NULL && thread->is_Java_thread()) {

  5606     if (Threads::is_supported_jni_version_including_1_1(version)) {

  5607       *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();

  5608       ret = JNI_OK;

  5609       return ret;

  5611     } else if (version == JVMPI_VERSION_1 ||

  5612                version == JVMPI_VERSION_1_1 ||

  5613                version == JVMPI_VERSION_1_2) {

  5614       tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");

  5615       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");

  5616       ret = JNI_EVERSION;

  5617       return ret;

  5618     } else if (JvmtiExport::is_jvmdi_version(version)) {

  5619       tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");

  5620       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");

  5621       ret = JNI_EVERSION;

  5622       return ret;

  5623     } else {

  5624       *penv = NULL;

  5625       ret = JNI_EVERSION;

  5626       return ret;

  5627     }

  5628   } else {

  5629     *penv = NULL;

  5630     ret = JNI_EDETACHED;

  5631     return ret;

  5632   }

  5633 }

  5636 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {

  5637 #ifndef USDT2

  5638   DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);

  5639 #else /* USDT2 */

  5640   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(

  5641                                                 vm, penv, _args);

  5642 #endif /* USDT2 */

  5643   if (!vm_created) {

  5644 #ifndef USDT2

  5645     DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);

  5646 #else /* USDT2 */

  5647   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(

  5648                                                  (uint32_t) JNI_ERR);

  5649 #endif /* USDT2 */

  5650     return JNI_ERR;

  5651   }

  5653   JNIWrapper("AttachCurrentThreadAsDaemon");

  5654   jint ret = attach_current_thread(vm, penv, _args, true);

  5655 #ifndef USDT2

  5656   DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);

  5657 #else /* USDT2 */

  5658   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(

  5659                                                  ret);

  5660 #endif /* USDT2 */

  5661   return ret;

  5662 }

  5665 } // End extern "C"

  5667 const struct JNIInvokeInterface_ jni_InvokeInterface = {

  5668     NULL,

  5669     NULL,

  5670     NULL,

  5672     jni_DestroyJavaVM,

  5673     jni_AttachCurrentThread,

  5674     jni_DetachCurrentThread,

  5675     jni_GetEnv,

  5676     jni_AttachCurrentThreadAsDaemon

  5677 };

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/prims/jni.cpp@b985cbb00e68

src/share/vm/prims/jni.cpp