jdk8-mips64-public/hotspot: src/share/vm/prims/jni.cpp@392f8722fc51

     1 /*

     2  * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright (c) 2012 Red Hat, Inc.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  *

    24  */

    26 #include "precompiled.hpp"

    27 #include "ci/ciReplay.hpp"

    28 #include "classfile/altHashing.hpp"

    29 #include "classfile/classLoader.hpp"

    30 #include "classfile/javaClasses.hpp"

    31 #include "classfile/symbolTable.hpp"

    32 #include "classfile/systemDictionary.hpp"

    33 #include "classfile/vmSymbols.hpp"

    34 #include "interpreter/linkResolver.hpp"

    35 #include "utilities/macros.hpp"

    36 #if INCLUDE_ALL_GCS

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

    38 #endif // INCLUDE_ALL_GCS

    39 #include "memory/allocation.hpp"

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

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

    42 #include "memory/oopFactory.hpp"

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

    44 #include "oops/instanceKlass.hpp"

    45 #include "oops/instanceOop.hpp"

    46 #include "oops/markOop.hpp"

    47 #include "oops/method.hpp"

    48 #include "oops/objArrayKlass.hpp"

    49 #include "oops/objArrayOop.hpp"

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

    51 #include "oops/symbol.hpp"

    52 #include "oops/typeArrayKlass.hpp"

    53 #include "oops/typeArrayOop.hpp"

    54 #include "prims/jni.h"

    55 #include "prims/jniCheck.hpp"

    56 #include "prims/jniExport.hpp"

    57 #include "prims/jniFastGetField.hpp"

    58 #include "prims/jvm.h"

    59 #include "prims/jvm_misc.hpp"

    60 #include "prims/jvmtiExport.hpp"

    61 #include "prims/jvmtiThreadState.hpp"

    62 #include "runtime/compilationPolicy.hpp"

    63 #include "runtime/fieldDescriptor.hpp"

    64 #include "runtime/fprofiler.hpp"

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

    66 #include "runtime/interfaceSupport.hpp"

    67 #include "runtime/java.hpp"

    68 #include "runtime/javaCalls.hpp"

    69 #include "runtime/jfieldIDWorkaround.hpp"

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

    71 #include "runtime/reflection.hpp"

    72 #include "runtime/sharedRuntime.hpp"

    73 #include "runtime/signature.hpp"

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

    75 #include "runtime/vm_operations.hpp"

    76 #include "services/memTracker.hpp"

    77 #include "services/runtimeService.hpp"

    78 #include "trace/tracing.hpp"

    79 #include "utilities/defaultStream.hpp"

    80 #include "utilities/dtrace.hpp"

    81 #include "utilities/events.hpp"

    82 #include "utilities/histogram.hpp"

    83 #ifdef TARGET_OS_FAMILY_linux

    84 # include "os_linux.inline.hpp"

    85 #endif

    86 #ifdef TARGET_OS_FAMILY_solaris

    87 # include "os_solaris.inline.hpp"

    88 #endif

    89 #ifdef TARGET_OS_FAMILY_windows

    90 # include "os_windows.inline.hpp"

    91 #endif

    92 #ifdef TARGET_OS_FAMILY_bsd

    93 # include "os_bsd.inline.hpp"

    94 #endif

    96 static jint CurrentVersion = JNI_VERSION_1_8;

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

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

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

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

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

   104 //

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

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

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

   108 // a reference to it).

   109 //

   110 // Example:

   111 // DT_RETURN_MARK_DECL(SomeFunc, int);

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

   113 //   int return_value = 0;

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

   115 //   foo(CHECK_0)

   116 //   return_value = 5;

   117 //   return return_value;

   118 // JNI_END

   119 #ifndef USDT2

   120 #define DT_RETURN_MARK_DECL(name, type)                                    \

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

   122   DTRACE_ONLY(                                                             \

   123     class DTraceReturnProbeMark_##name {                                   \

   124      public:                                                               \

   125       const type& _ret_ref;                                                \

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

   127       ~DTraceReturnProbeMark_##name() {                                    \

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

   129       }                                                                    \

   130     }                                                                      \

   131   )

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

   133 #define DT_VOID_RETURN_MARK_DECL(name)                                     \

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

   135   DTRACE_ONLY(                                                             \

   136     class DTraceReturnProbeMark_##name {                                   \

   137      public:                                                               \

   138       ~DTraceReturnProbeMark_##name() {                                    \

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

   140       }                                                                    \

   141     }                                                                      \

   142   )

   144 #else /* USDT2 */

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

   147   DTRACE_ONLY(                                                             \

   148     class DTraceReturnProbeMark_##name {                                   \

   149      public:                                                               \

   150       const type& _ret_ref;                                                \

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

   152       ~DTraceReturnProbeMark_##name() {                                    \

   153         probe;                                                             \

   154       }                                                                    \

   155     }                                                                      \

   156   )

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

   158 #define DT_VOID_RETURN_MARK_DECL(name, probe)                              \

   159   DTRACE_ONLY(                                                             \

   160     class DTraceReturnProbeMark_##name {                                   \

   161      public:                                                               \

   162       ~DTraceReturnProbeMark_##name() {                                    \

   163         probe;                                                             \

   164       }                                                                    \

   165     }                                                                      \

   166   )

   167 #endif /* USDT2 */

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

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

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

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

   173 #define DT_VOID_RETURN_MARK(name) \

   174   DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )

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

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

   179 // different behavior for Float/Double

   180 #define FP_SELECT_Boolean(intcode, fpcode) intcode

   181 #define FP_SELECT_Byte(intcode, fpcode)    intcode

   182 #define FP_SELECT_Char(intcode, fpcode)    intcode

   183 #define FP_SELECT_Short(intcode, fpcode)   intcode

   184 #define FP_SELECT_Object(intcode, fpcode)  intcode

   185 #define FP_SELECT_Int(intcode, fpcode)     intcode

   186 #define FP_SELECT_Long(intcode, fpcode)    intcode

   187 #define FP_SELECT_Float(intcode, fpcode)   fpcode

   188 #define FP_SELECT_Double(intcode, fpcode)  fpcode

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

   190   FP_SELECT_##TypeName(intcode, fpcode)

   192 #define COMMA ,

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

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

   196 #ifndef USDT2

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

   198   FP_SELECT(TypeName, \

   199     DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )

   200 #else /* USDT2 */

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

   202   FP_SELECT(TypeName, \

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

   204 #endif /* USDT2 */

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

   206   FP_SELECT(TypeName, \

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

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

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

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

   214     uintptr_t as_uint = (uintptr_t) id;

   215     intptr_t offset = raw_instance_offset(id);

   216     if (is_checked_jfieldID(id)) {

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

   218         return false;

   219       }

   220     }

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

   222   } else {

   223     JNIid* result = (JNIid*) id;

   224 #ifdef ASSERT

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

   226 #else

   227     return result != NULL;

   228 #endif

   229   }

   230 }

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

   234   if (offset <= small_offset_mask) {

   235     Klass* field_klass = k;

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

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

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

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

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

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

   242       super_klass = field_klass->super();

   243     }

   244     debug_only(No_Safepoint_Verifier nosafepoint;)

   245     uintptr_t klass_hash = field_klass->identity_hash();

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

   247   } else {

   248 #if 0

   249     #ifndef PRODUCT

   250     {

   251       ResourceMark rm;

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

   253     }

   254     #endif

   255 #endif

   256     return 0;

   257   }

   258 }

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

   261   uintptr_t as_uint = (uintptr_t) id;

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

   263   do {

   264     debug_only(No_Safepoint_Verifier nosafepoint;)

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

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

   267       return true;

   268     k = k->super();

   269   } while (k != NULL);

   270   return false;

   271 }

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

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

   275   uintptr_t as_uint = (uintptr_t) id;

   276   intptr_t offset = raw_instance_offset(id);

   277   if (VerifyJNIFields) {

   278     if (is_checked_jfieldID(id)) {

   279       guarantee(klass_hash_ok(k, id),

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

   281     } else {

   282 #if 0

   283       #ifndef PRODUCT

   284       if (Verbose) {

   285   ResourceMark rm;

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

   287       }

   288       #endif

   289 #endif

   290     }

   291   }

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

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

   294 }

   296 // Wrapper to trace JNI functions

   298 #ifdef ASSERT

   299   Histogram* JNIHistogram;

   300   static volatile jint JNIHistogram_lock = 0;

   302   class JNITraceWrapper : public StackObj {

   303    public:

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

   305       if (TraceJNICalls) {

   306         va_list ap;

   307         va_start(ap, format);

   308         tty->print("JNI ");

   309         tty->vprint_cr(format, ap);

   310         va_end(ap);

   311       }

   312     }

   313   };

   315   class JNIHistogramElement : public HistogramElement {

   316     public:

   317      JNIHistogramElement(const char* name);

   318   };

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

   321     _name = elementName;

   322     uintx count = 0;

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

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

   326         count +=1;

   327         if ( (WarnOnStalledSpinLock > 0)

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

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

   330         }

   331       }

   332      }

   335     if(JNIHistogram == NULL)

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

   338     JNIHistogram->add_element(this);

   339     Atomic::dec(&JNIHistogram_lock);

   340   }

   342   #define JNICountWrapper(arg)                                     \

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

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

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

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

   347 #else

   348   #define JNIWrapper(arg)

   349 #endif

   352 // Implementation of JNI entries

   354 #ifndef USDT2

   355 DT_RETURN_MARK_DECL(DefineClass, jclass);

   356 #else /* USDT2 */

   357 DT_RETURN_MARK_DECL(DefineClass, jclass

   358                     , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));

   359 #endif /* USDT2 */

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

   362                                   const jbyte *buf, jsize bufLen))

   363   JNIWrapper("DefineClass");

   365 #ifndef USDT2

   366   DTRACE_PROBE5(hotspot_jni, DefineClass__entry,

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

   368 #else /* USDT2 */

   369   HOTSPOT_JNI_DEFINECLASS_ENTRY(

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

   371 #endif /* USDT2 */

   372   jclass cls = NULL;

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

   375   TempNewSymbol class_name = NULL;

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

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

   378   if (name != NULL) {

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

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

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

   382       // into the constant pool.

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

   384     }

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

   386   }

   387   ResourceMark rm(THREAD);

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

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

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

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

   393     // If not, increment the corresponding counter

   394     if (ObjectSynchronizer::

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

   396         ObjectSynchronizer::owner_self) {

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

   398     }

   399   }

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

   401                                                      Handle(), &st, true,

   402                                                      CHECK_NULL);

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

   405     trace_class_resolution(k);

   406   }

   408   cls = (jclass)JNIHandles::make_local(

   409     env, k->java_mirror());

   410   return cls;

   411 JNI_END

   415 static bool first_time_FindClass = true;

   417 #ifndef USDT2

   418 DT_RETURN_MARK_DECL(FindClass, jclass);

   419 #else /* USDT2 */

   420 DT_RETURN_MARK_DECL(FindClass, jclass

   421                     , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));

   422 #endif /* USDT2 */

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

   425   JNIWrapper("FindClass");

   426 #ifndef USDT2

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

   428 #else /* USDT2 */

   429   HOTSPOT_JNI_FINDCLASS_ENTRY(

   430                               env, (char *)name);

   431 #endif /* USDT2 */

   433   jclass result = NULL;

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

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

   437   bool first_time = first_time_FindClass;

   438   first_time_FindClass = false;

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

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

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

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

   444   }

   446   //%note jni_3

   447   Handle loader;

   448   Handle protection_domain;

   449   // Find calling class

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

   451   if (k.not_null()) {

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

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

   454     // in the correct class context.

   455     if (loader.is_null() &&

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

   457       JavaValue result(T_OBJECT);

   458       JavaCalls::call_static(&result, k,

   459                                       vmSymbols::getFromClass_name(),

   460                                       vmSymbols::void_class_signature(),

   461                                       thread);

   462       if (HAS_PENDING_EXCEPTION) {

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

   464         CLEAR_PENDING_EXCEPTION;

   465         THROW_HANDLE_0(ex);

   466       }

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

   468       loader = Handle(THREAD,

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

   470       protection_domain = Handle(THREAD,

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

   472     }

   473   } else {

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

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

   476   }

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

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

   480                                         protection_domain, true, thread);

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

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

   484   }

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

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

   488   // Controlled by flag DelayCompilationDuringStartup.

   489   if (first_time && !CompileTheWorld)

   490     CompilationPolicy::completed_vm_startup();

   492   return result;

   493 JNI_END

   495 #ifndef USDT2

   496 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);

   497 #else /* USDT2 */

   498 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID

   499                     , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));

   500 #endif /* USDT2 */

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

   503   JNIWrapper("FromReflectedMethod");

   504 #ifndef USDT2

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

   506 #else /* USDT2 */

   507   HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(

   508                                         env, method);

   509 #endif /* USDT2 */

   510   jmethodID ret = NULL;

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

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

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

   515   oop mirror     = NULL;

   516   int slot       = 0;

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

   519     mirror = java_lang_reflect_Constructor::clazz(reflected);

   520     slot   = java_lang_reflect_Constructor::slot(reflected);

   521   } else {

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

   523     mirror = java_lang_reflect_Method::clazz(reflected);

   524     slot   = java_lang_reflect_Method::slot(reflected);

   525   }

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

   528   KlassHandle k1(THREAD, k);

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

   530   k1()->initialize(CHECK_NULL);

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

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

   533   return ret;

   534 JNI_END

   536 #ifndef USDT2

   537 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);

   538 #else /* USDT2 */

   539 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID

   540                     , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));

   541 #endif /* USDT2 */

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

   544   JNIWrapper("FromReflectedField");

   545 #ifndef USDT2

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

   547 #else /* USDT2 */

   548   HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(

   549                                        env, field);

   550 #endif /* USDT2 */

   551   jfieldID ret = NULL;

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

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

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

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

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

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

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

   561   KlassHandle k1(THREAD, k);

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

   563   k1()->initialize(CHECK_NULL);

   565   // First check if this is a static field

   566   if (modifiers & JVM_ACC_STATIC) {

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

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

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

   570     debug_only(id->set_is_static_field_id();)

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

   572     ret = jfieldIDWorkaround::to_static_jfieldID(id);

   573     return ret;

   574   }

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

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

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

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

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

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

   582   return ret;

   583 JNI_END

   585 #ifndef USDT2

   586 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);

   587 #else /* USDT2 */

   588 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject

   589                     , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));

   590 #endif /* USDT2 */

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

   593   JNIWrapper("ToReflectedMethod");

   594 #ifndef USDT2

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

   596 #else /* USDT2 */

   597   HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(

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

   599 #endif /* USDT2 */

   600   jobject ret = NULL;

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

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

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

   605   oop reflection_method;

   606   if (m->is_initializer()) {

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

   608   } else {

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

   610   }

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

   612   return ret;

   613 JNI_END

   615 #ifndef USDT2

   616 DT_RETURN_MARK_DECL(GetSuperclass, jclass);

   617 #else /* USDT2 */

   618 DT_RETURN_MARK_DECL(GetSuperclass, jclass

   619                     , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));

   620 #endif /* USDT2 */

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

   623   JNIWrapper("GetSuperclass");

   624 #ifndef USDT2

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

   626 #else /* USDT2 */

   627   HOTSPOT_JNI_GETSUPERCLASS_ENTRY(

   628                                   env, sub);

   629 #endif /* USDT2 */

   630   jclass obj = NULL;

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

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

   634   // primitive classes return NULL

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

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

   638   // arrays return Object

   639   // interfaces return NULL

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

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

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

   644   // return mirror for superclass

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

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

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

   648                                  ? SystemDictionary::Object_klass()

   649                                  : k->super() ) );

   650   assert(super == super2,

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

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

   653   return obj;

   654 JNI_END

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

   657   JNIWrapper("IsSubclassOf");

   658 #ifndef USDT2

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

   660 #else /* USDT2 */

   661   HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(

   662                                      env, sub, super);

   663 #endif /* USDT2 */

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

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

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

   667       java_lang_Class::is_primitive(super_mirror)) {

   668     jboolean ret = (sub_mirror == super_mirror);

   669 #ifndef USDT2

   670     DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);

   671 #else /* USDT2 */

   672     HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(

   673                                         ret);

   674 #endif /* USDT2 */

   675     return ret;

   676   }

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

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

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

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

   681                    JNI_TRUE : JNI_FALSE;

   682 #ifndef USDT2

   683   DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);

   684 #else /* USDT2 */

   685   HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(

   686                                       ret);

   687 #endif /* USDT2 */

   688   return ret;

   689 JNI_END

   691 #ifndef USDT2

   692 DT_RETURN_MARK_DECL(Throw, jint);

   693 #else /* USDT2 */

   694 DT_RETURN_MARK_DECL(Throw, jint

   695                     , HOTSPOT_JNI_THROW_RETURN(_ret_ref));

   696 #endif /* USDT2 */

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

   699   JNIWrapper("Throw");

   700 #ifndef USDT2

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

   702 #else /* USDT2 */

   703   HOTSPOT_JNI_THROW_ENTRY(

   704  env, obj);

   705 #endif /* USDT2 */

   706   jint ret = JNI_OK;

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

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

   710   ShouldNotReachHere();

   711 JNI_END

   713 #ifndef USDT2

   714 DT_RETURN_MARK_DECL(ThrowNew, jint);

   715 #else /* USDT2 */

   716 DT_RETURN_MARK_DECL(ThrowNew, jint

   717                     , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));

   718 #endif /* USDT2 */

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

   721   JNIWrapper("ThrowNew");

   722 #ifndef USDT2

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

   724 #else /* USDT2 */

   725   HOTSPOT_JNI_THROWNEW_ENTRY(

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

   727 #endif /* USDT2 */

   728   jint ret = JNI_OK;

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

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

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

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

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

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

   736   ShouldNotReachHere();

   737 JNI_END

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

   741 // exception in ExceptionOccurred and ExceptionCheck calls, since

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

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

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

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

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

   747 // state transition.

   749 static void jni_check_async_exceptions(JavaThread *thread) {

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

   751   thread->check_and_handle_async_exceptions();

   752 }

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

   755   JNIWrapper("ExceptionOccurred");

   756 #ifndef USDT2

   757   DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);

   758 #else /* USDT2 */

   759   HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(

   760                                       env);

   761 #endif /* USDT2 */

   762   jni_check_async_exceptions(thread);

   763   oop exception = thread->pending_exception();

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

   765 #ifndef USDT2

   766   DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);

   767 #else /* USDT2 */

   768   HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(

   769                                        ret);

   770 #endif /* USDT2 */

   771   return ret;

   772 JNI_END

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

   776   JNIWrapper("ExceptionDescribe");

   777 #ifndef USDT2

   778   DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);

   779 #else /* USDT2 */

   780   HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(

   781                                       env);

   782 #endif /* USDT2 */

   783   if (thread->has_pending_exception()) {

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

   785     thread->clear_pending_exception();

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

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

   788     } else {

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

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

   791         ResourceMark rm(THREAD);

   792         jio_fprintf(defaultStream::error_stream(),

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

   794       }

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

   796         JavaValue result(T_VOID);

   797         JavaCalls::call_virtual(&result,

   798                                 ex,

   799                                 KlassHandle(THREAD,

   800                                   SystemDictionary::Throwable_klass()),

   801                                 vmSymbols::printStackTrace_name(),

   802                                 vmSymbols::void_method_signature(),

   803                                 THREAD);

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

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

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

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

   808         // is expected.

   809         CLEAR_PENDING_EXCEPTION;

   810       } else {

   811         ResourceMark rm(THREAD);

   812         jio_fprintf(defaultStream::error_stream(),

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

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

   815       }

   816     }

   817   }

   818 #ifndef USDT2

   819   DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);

   820 #else /* USDT2 */

   821   HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(

   822                                        );

   823 #endif /* USDT2 */

   824 JNI_END

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

   828   JNIWrapper("ExceptionClear");

   829 #ifndef USDT2

   830   DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);

   831 #else /* USDT2 */

   832   HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(

   833                                    env);

   834 #endif /* USDT2 */

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

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

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

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

   840     state->set_exception_caught();

   841   }

   842   thread->clear_pending_exception();

   843 #ifndef USDT2

   844   DTRACE_PROBE(hotspot_jni, ExceptionClear__return);

   845 #else /* USDT2 */

   846   HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(

   847                                     );

   848 #endif /* USDT2 */

   849 JNI_END

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

   853   JNIWrapper("FatalError");

   854 #ifndef USDT2

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

   856 #else /* USDT2 */

   857   HOTSPOT_JNI_FATALERROR_ENTRY(

   858                                env, (char *) msg);

   859 #endif /* USDT2 */

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

   861   thread->print_stack();

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

   863 JNI_END

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

   867   JNIWrapper("PushLocalFrame");

   868 #ifndef USDT2

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

   870 #else /* USDT2 */

   871   HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(

   872                                    env, capacity);

   873 #endif /* USDT2 */

   874   //%note jni_11

   875   if (capacity < 0 ||

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

   877 #ifndef USDT2

   878     DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);

   879 #else /* USDT2 */

   880     HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(

   881                                       (uint32_t)JNI_ERR);

   882 #endif /* USDT2 */

   883     return JNI_ERR;

   884   }

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

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

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

   888   new_handles->set_pop_frame_link(old_handles);

   889   thread->set_active_handles(new_handles);

   890   jint ret = JNI_OK;

   891 #ifndef USDT2

   892   DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);

   893 #else /* USDT2 */

   894   HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(

   895                                     ret);

   896 #endif /* USDT2 */

   897   return ret;

   898 JNI_END

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

   902   JNIWrapper("PopLocalFrame");

   903 #ifndef USDT2

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

   905 #else /* USDT2 */

   906   HOTSPOT_JNI_POPLOCALFRAME_ENTRY(

   907                                   env, result);

   908 #endif /* USDT2 */

   909   //%note jni_11

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

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

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

   913   if (new_handles != NULL) {

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

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

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

   917     // the release_block call will release the blocks.

   918     thread->set_active_handles(new_handles);

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

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

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

   922   }

   923 #ifndef USDT2

   924   DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);

   925 #else /* USDT2 */

   926   HOTSPOT_JNI_POPLOCALFRAME_RETURN(

   927                                    result);

   928 #endif /* USDT2 */

   929   return result;

   930 JNI_END

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

   934   JNIWrapper("NewGlobalRef");

   935 #ifndef USDT2

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

   937 #else /* USDT2 */

   938   HOTSPOT_JNI_NEWGLOBALREF_ENTRY(

   939                                  env, ref);

   940 #endif /* USDT2 */

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

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

   943 #ifndef USDT2

   944   DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);

   945 #else /* USDT2 */

   946   HOTSPOT_JNI_NEWGLOBALREF_RETURN(

   947                                   ret);

   948 #endif /* USDT2 */

   949   return ret;

   950 JNI_END

   952 // Must be JNI_ENTRY (with HandleMark)

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

   954   JNIWrapper("DeleteGlobalRef");

   955 #ifndef USDT2

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

   957 #else /* USDT2 */

   958   HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(

   959                                     env, ref);

   960 #endif /* USDT2 */

   961   JNIHandles::destroy_global(ref);

   962 #ifndef USDT2

   963   DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);

   964 #else /* USDT2 */

   965   HOTSPOT_JNI_DELETEGLOBALREF_RETURN(

   966                                      );

   967 #endif /* USDT2 */

   968 JNI_END

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

   971   JNIWrapper("DeleteLocalRef");

   972 #ifndef USDT2

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

   974 #else /* USDT2 */

   975   HOTSPOT_JNI_DELETELOCALREF_ENTRY(

   976                                    env, obj);

   977 #endif /* USDT2 */

   978   JNIHandles::destroy_local(obj);

   979 #ifndef USDT2

   980   DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);

   981 #else /* USDT2 */

   982   HOTSPOT_JNI_DELETELOCALREF_RETURN(

   983                                     );

   984 #endif /* USDT2 */

   985 JNI_END

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

   988   JNIWrapper("IsSameObject");

   989 #ifndef USDT2

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

   991 #else /* USDT2 */

   992   HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(

   993                                  env, r1, r2);

   994 #endif /* USDT2 */

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

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

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

   998 #ifndef USDT2

   999   DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);

  1000 #else /* USDT2 */

  1001   HOTSPOT_JNI_ISSAMEOBJECT_RETURN(

  1002                                   ret);

  1003 #endif /* USDT2 */

  1004   return ret;

  1005 JNI_END

  1008 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))

  1009   JNIWrapper("NewLocalRef");

  1010 #ifndef USDT2

  1011   DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);

  1012 #else /* USDT2 */

  1013   HOTSPOT_JNI_NEWLOCALREF_ENTRY(

  1014                                 env, ref);

  1015 #endif /* USDT2 */

  1016   jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));

  1017 #ifndef USDT2

  1018   DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);

  1019 #else /* USDT2 */

  1020   HOTSPOT_JNI_NEWLOCALREF_RETURN(

  1021                                  ret);

  1022 #endif /* USDT2 */

  1023   return ret;

  1024 JNI_END

  1026 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))

  1027   JNIWrapper("EnsureLocalCapacity");

  1028 #ifndef USDT2

  1029   DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);

  1030 #else /* USDT2 */

  1031   HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(

  1032                                         env, capacity);

  1033 #endif /* USDT2 */

  1034   jint ret;

  1035   if (capacity >= 0 &&

  1036       ((MaxJNILocalCapacity <= 0) || (capacity <= MaxJNILocalCapacity))) {

  1037     ret = JNI_OK;

  1038   } else {

  1039     ret = JNI_ERR;

  1040   }

  1041 #ifndef USDT2

  1042   DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);

  1043 #else /* USDT2 */

  1044   HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(

  1045                                          ret);

  1046 #endif /* USDT2 */

  1047   return ret;

  1048 JNI_END

  1050 // Return the Handle Type

  1051 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))

  1052   JNIWrapper("GetObjectRefType");

  1053 #ifndef USDT2

  1054   DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);

  1055 #else /* USDT2 */

  1056   HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(

  1057                                      env, obj);

  1058 #endif /* USDT2 */

  1059   jobjectRefType ret;

  1060   if (JNIHandles::is_local_handle(thread, obj) ||

  1061       JNIHandles::is_frame_handle(thread, obj))

  1062     ret = JNILocalRefType;

  1063   else if (JNIHandles::is_global_handle(obj))

  1064     ret = JNIGlobalRefType;

  1065   else if (JNIHandles::is_weak_global_handle(obj))

  1066     ret = JNIWeakGlobalRefType;

  1067   else

  1068     ret = JNIInvalidRefType;

  1069 #ifndef USDT2

  1070   DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);

  1071 #else /* USDT2 */

  1072   HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(

  1073                                       (void *) ret);

  1074 #endif /* USDT2 */

  1075   return ret;

  1076 JNI_END

  1079 class JNI_ArgumentPusher : public SignatureIterator {

  1080  protected:

  1081   JavaCallArguments*  _arguments;

  1083   virtual void get_bool   () = 0;

  1084   virtual void get_char   () = 0;

  1085   virtual void get_short  () = 0;

  1086   virtual void get_byte   () = 0;

  1087   virtual void get_int    () = 0;

  1088   virtual void get_long   () = 0;

  1089   virtual void get_float  () = 0;

  1090   virtual void get_double () = 0;

  1091   virtual void get_object () = 0;

  1093   JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {

  1094     this->_return_type = T_ILLEGAL;

  1095     _arguments = NULL;

  1096   }

  1098  public:

  1099   virtual void iterate( uint64_t fingerprint ) = 0;

  1101   void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }

  1103   inline void do_bool()                     { if (!is_return_type()) get_bool();   }

  1104   inline void do_char()                     { if (!is_return_type()) get_char();   }

  1105   inline void do_short()                    { if (!is_return_type()) get_short();  }

  1106   inline void do_byte()                     { if (!is_return_type()) get_byte();   }

  1107   inline void do_int()                      { if (!is_return_type()) get_int();    }

  1108   inline void do_long()                     { if (!is_return_type()) get_long();   }

  1109   inline void do_float()                    { if (!is_return_type()) get_float();  }

  1110   inline void do_double()                   { if (!is_return_type()) get_double(); }

  1111   inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }

  1112   inline void do_array(int begin, int end)  { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array

  1113   inline void do_void()                     { }

  1115   JavaCallArguments* arguments()     { return _arguments; }

  1116   void push_receiver(Handle h)       { _arguments->push_oop(h); }

  1117 };

  1120 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {

  1121  protected:

  1122   va_list _ap;

  1124   inline void get_bool()   {

  1125     // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and

  1126     // 0 to JNI_FALSE.  Boolean return values from native are normalized the same in

  1127     // TemplateInterpreterGenerator::generate_result_handler_for and

  1128     // SharedRuntime::generate_native_wrapper.

  1129     jboolean b = va_arg(_ap, jint);

  1130     _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE));

  1131   }

  1132   inline void get_char()   { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg

  1133   inline void get_short()  { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg

  1134   inline void get_byte()   { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg

  1135   inline void get_int()    { _arguments->push_int(va_arg(_ap, jint)); }

  1137   // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests

  1139   inline void get_long()   { _arguments->push_long(va_arg(_ap, jlong)); }

  1140   inline void get_float()  { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg

  1141   inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }

  1142   inline void get_object() { jobject l = va_arg(_ap, jobject);

  1143                              _arguments->push_oop(Handle((oop *)l, false)); }

  1145   inline void set_ap(va_list rap) {

  1146 #ifdef va_copy

  1147     va_copy(_ap, rap);

  1148 #elif defined (__va_copy)

  1149     __va_copy(_ap, rap);

  1150 #else

  1151     _ap = rap;

  1152 #endif

  1153   }

  1155  public:

  1156   JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)

  1157        : JNI_ArgumentPusher(signature) {

  1158     set_ap(rap);

  1159   }

  1160   JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)

  1161       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {

  1162     set_ap(rap);

  1163   }

  1165   // Optimized path if we have the bitvector form of signature

  1166   void iterate( uint64_t fingerprint ) {

  1167     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments

  1168     else {

  1169       _return_type = (BasicType)((fingerprint >> static_feature_size) &

  1170                                   result_feature_mask);

  1172       assert(fingerprint, "Fingerprint should not be 0");

  1173       fingerprint = fingerprint >> (static_feature_size + result_feature_size);

  1174       while ( 1 ) {

  1175         switch ( fingerprint & parameter_feature_mask ) {

  1176           case bool_parm:

  1177             get_bool();

  1178             break;

  1179           case char_parm:

  1180             get_char();

  1181             break;

  1182           case short_parm:

  1183             get_short();

  1184             break;

  1185           case byte_parm:

  1186             get_byte();

  1187             break;

  1188           case int_parm:

  1189             get_int();

  1190             break;

  1191           case obj_parm:

  1192             get_object();

  1193             break;

  1194           case long_parm:

  1195             get_long();

  1196             break;

  1197           case float_parm:

  1198             get_float();

  1199             break;

  1200           case double_parm:

  1201             get_double();

  1202             break;

  1203           case done_parm:

  1204             return;

  1205             break;

  1206           default:

  1207             ShouldNotReachHere();

  1208             break;

  1209         }

  1210         fingerprint >>= parameter_feature_size;

  1211       }

  1212     }

  1213   }

  1214 };

  1217 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {

  1218  protected:

  1219   const jvalue *_ap;

  1221   inline void get_bool()   {

  1222     // Normalize boolean arguments from native code by converting 1-255 to JNI_TRUE and

  1223     // 0 to JNI_FALSE.  Boolean return values from native are normalized the same in

  1224     // TemplateInterpreterGenerator::generate_result_handler_for and

  1225     // SharedRuntime::generate_native_wrapper.

  1226     jboolean b = (_ap++)->z;

  1227     _arguments->push_int((jint)(b == 0 ? JNI_FALSE : JNI_TRUE));

  1228   }

  1229   inline void get_char()   { _arguments->push_int((jint)(_ap++)->c); }

  1230   inline void get_short()  { _arguments->push_int((jint)(_ap++)->s); }

  1231   inline void get_byte()   { _arguments->push_int((jint)(_ap++)->b); }

  1232   inline void get_int()    { _arguments->push_int((jint)(_ap++)->i); }

  1234   inline void get_long()   { _arguments->push_long((_ap++)->j);  }

  1235   inline void get_float()  { _arguments->push_float((_ap++)->f); }

  1236   inline void get_double() { _arguments->push_double((_ap++)->d);}

  1237   inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }

  1239   inline void set_ap(const jvalue *rap) { _ap = rap; }

  1241  public:

  1242   JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)

  1243        : JNI_ArgumentPusher(signature) {

  1244     set_ap(rap);

  1245   }

  1246   JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)

  1247       : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {

  1248     set_ap(rap);

  1249   }

  1251   // Optimized path if we have the bitvector form of signature

  1252   void iterate( uint64_t fingerprint ) {

  1253     if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments

  1254     else {

  1255       _return_type = (BasicType)((fingerprint >> static_feature_size) &

  1256                                   result_feature_mask);

  1257       assert(fingerprint, "Fingerprint should not be 0");

  1258       fingerprint = fingerprint >> (static_feature_size + result_feature_size);

  1259       while ( 1 ) {

  1260         switch ( fingerprint & parameter_feature_mask ) {

  1261           case bool_parm:

  1262             get_bool();

  1263             break;

  1264           case char_parm:

  1265             get_char();

  1266             break;

  1267           case short_parm:

  1268             get_short();

  1269             break;

  1270           case byte_parm:

  1271             get_byte();

  1272             break;

  1273           case int_parm:

  1274             get_int();

  1275             break;

  1276           case obj_parm:

  1277             get_object();

  1278             break;

  1279           case long_parm:

  1280             get_long();

  1281             break;

  1282           case float_parm:

  1283             get_float();

  1284             break;

  1285           case double_parm:

  1286             get_double();

  1287             break;

  1288           case done_parm:

  1289             return;

  1290             break;

  1291           default:

  1292             ShouldNotReachHere();

  1293             break;

  1294         }

  1295         fingerprint >>= parameter_feature_size;

  1296       }

  1297     }

  1298   }

  1299 };

  1302 enum JNICallType {

  1303   JNI_STATIC,

  1304   JNI_VIRTUAL,

  1305   JNI_NONVIRTUAL

  1306 };

  1310 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {

  1311   methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));

  1313   // Create object to hold arguments for the JavaCall, and associate it with

  1314   // the jni parser

  1315   ResourceMark rm(THREAD);

  1316   int number_of_parameters = method->size_of_parameters();

  1317   JavaCallArguments java_args(number_of_parameters);

  1318   args->set_java_argument_object(&java_args);

  1320   assert(method->is_static(), "method should be static");

  1322   // Fill out JavaCallArguments object

  1323   args->iterate( Fingerprinter(method).fingerprint() );

  1324   // Initialize result type

  1325   result->set_type(args->get_ret_type());

  1327   // Invoke the method. Result is returned as oop.

  1328   JavaCalls::call(result, method, &java_args, CHECK);

  1330   // Convert result

  1331   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {

  1332     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));

  1333   }

  1334 }

  1337 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {

  1338   oop recv = JNIHandles::resolve(receiver);

  1339   if (recv == NULL) {

  1340     THROW(vmSymbols::java_lang_NullPointerException());

  1341   }

  1342   Handle h_recv(THREAD, recv);

  1344   int number_of_parameters;

  1345   Method* selected_method;

  1346   {

  1347     Method* m = Method::resolve_jmethod_id(method_id);

  1348     number_of_parameters = m->size_of_parameters();

  1349     Klass* holder = m->method_holder();

  1350     if (call_type != JNI_VIRTUAL) {

  1351         selected_method = m;

  1352     } else if (!m->has_itable_index()) {

  1353       // non-interface call -- for that little speed boost, don't handlize

  1354       debug_only(No_Safepoint_Verifier nosafepoint;)

  1355       // jni_GetMethodID makes sure class is linked and initialized

  1356       // so m should have a valid vtable index.

  1357       assert(m->valid_vtable_index(), "no valid vtable index");

  1358       int vtbl_index = m->vtable_index();

  1359       if (vtbl_index != Method::nonvirtual_vtable_index) {

  1360         Klass* k = h_recv->klass();

  1361         // k might be an arrayKlassOop but all vtables start at

  1362         // the same place. The cast is to avoid virtual call and assertion.

  1363         InstanceKlass *ik = (InstanceKlass*)k;

  1364         selected_method = ik->method_at_vtable(vtbl_index);

  1365       } else {

  1366         // final method

  1367         selected_method = m;

  1368       }

  1369     } else {

  1370       // interface call

  1371       KlassHandle h_holder(THREAD, holder);

  1373       int itbl_index = m->itable_index();

  1374       Klass* k = h_recv->klass();

  1375       selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);

  1376     }

  1377   }

  1379   methodHandle method(THREAD, selected_method);

  1381   // Create object to hold arguments for the JavaCall, and associate it with

  1382   // the jni parser

  1383   ResourceMark rm(THREAD);

  1384   JavaCallArguments java_args(number_of_parameters);

  1385   args->set_java_argument_object(&java_args);

  1387   // handle arguments

  1388   assert(!method->is_static(), "method should not be static");

  1389   args->push_receiver(h_recv); // Push jobject handle

  1391   // Fill out JavaCallArguments object

  1392   args->iterate( Fingerprinter(method).fingerprint() );

  1393   // Initialize result type

  1394   result->set_type(args->get_ret_type());

  1396   // Invoke the method. Result is returned as oop.

  1397   JavaCalls::call(result, method, &java_args, CHECK);

  1399   // Convert result

  1400   if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {

  1401     result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));

  1402   }

  1403 }

  1406 static instanceOop alloc_object(jclass clazz, TRAPS) {

  1407   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  1408   k()->check_valid_for_instantiation(false, CHECK_NULL);

  1409   InstanceKlass::cast(k())->initialize(CHECK_NULL);

  1410   instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);

  1411   return ih;

  1412 }

  1414 #ifndef USDT2

  1415 DT_RETURN_MARK_DECL(AllocObject, jobject);

  1416 #else /* USDT2 */

  1417 DT_RETURN_MARK_DECL(AllocObject, jobject

  1418                     , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));

  1419 #endif /* USDT2 */

  1421 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))

  1422   JNIWrapper("AllocObject");

  1424 #ifndef USDT2

  1425   DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);

  1426 #else /* USDT2 */

  1427   HOTSPOT_JNI_ALLOCOBJECT_ENTRY(

  1428                                 env, clazz);

  1429 #endif /* USDT2 */

  1430   jobject ret = NULL;

  1431   DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);

  1433   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1434   ret = JNIHandles::make_local(env, i);

  1435   return ret;

  1436 JNI_END

  1438 #ifndef USDT2

  1439 DT_RETURN_MARK_DECL(NewObjectA, jobject);

  1440 #else /* USDT2 */

  1441 DT_RETURN_MARK_DECL(NewObjectA, jobject

  1442                     , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));

  1443 #endif /* USDT2 */

  1445 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))

  1446   JNIWrapper("NewObjectA");

  1447 #ifndef USDT2

  1448   DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);

  1449 #else /* USDT2 */

  1450   HOTSPOT_JNI_NEWOBJECTA_ENTRY(

  1451                                env, clazz, (uintptr_t) methodID);

  1452 #endif /* USDT2 */

  1453   jobject obj = NULL;

  1454   DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);

  1456   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1457   obj = JNIHandles::make_local(env, i);

  1458   JavaValue jvalue(T_VOID);

  1459   JNI_ArgumentPusherArray ap(methodID, args);

  1460   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);

  1461   return obj;

  1462 JNI_END

  1464 #ifndef USDT2

  1465 DT_RETURN_MARK_DECL(NewObjectV, jobject);

  1466 #else /* USDT2 */

  1467 DT_RETURN_MARK_DECL(NewObjectV, jobject

  1468                     , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));

  1469 #endif /* USDT2 */

  1471 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))

  1472   JNIWrapper("NewObjectV");

  1473 #ifndef USDT2

  1474   DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);

  1475 #else /* USDT2 */

  1476   HOTSPOT_JNI_NEWOBJECTV_ENTRY(

  1477                                env, clazz, (uintptr_t) methodID);

  1478 #endif /* USDT2 */

  1479   jobject obj = NULL;

  1480   DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);

  1482   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1483   obj = JNIHandles::make_local(env, i);

  1484   JavaValue jvalue(T_VOID);

  1485   JNI_ArgumentPusherVaArg ap(methodID, args);

  1486   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);

  1487   return obj;

  1488 JNI_END

  1490 #ifndef USDT2

  1491 DT_RETURN_MARK_DECL(NewObject, jobject);

  1492 #else /* USDT2 */

  1493 DT_RETURN_MARK_DECL(NewObject, jobject

  1494                     , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));

  1495 #endif /* USDT2 */

  1497 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))

  1498   JNIWrapper("NewObject");

  1499 #ifndef USDT2

  1500   DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);

  1501 #else /* USDT2 */

  1502   HOTSPOT_JNI_NEWOBJECT_ENTRY(

  1503                               env, clazz, (uintptr_t) methodID);

  1504 #endif /* USDT2 */

  1505   jobject obj = NULL;

  1506   DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);

  1508   instanceOop i = alloc_object(clazz, CHECK_NULL);

  1509   obj = JNIHandles::make_local(env, i);

  1510   va_list args;

  1511   va_start(args, methodID);

  1512   JavaValue jvalue(T_VOID);

  1513   JNI_ArgumentPusherVaArg ap(methodID, args);

  1514   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);

  1515   va_end(args);

  1516   return obj;

  1517 JNI_END

  1520 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))

  1521   JNIWrapper("GetObjectClass");

  1522 #ifndef USDT2

  1523   DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);

  1524 #else /* USDT2 */

  1525   HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(

  1526                                    env, obj);

  1527 #endif /* USDT2 */

  1528   Klass* k = JNIHandles::resolve_non_null(obj)->klass();

  1529   jclass ret =

  1530     (jclass) JNIHandles::make_local(env, k->java_mirror());

  1531 #ifndef USDT2

  1532   DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);

  1533 #else /* USDT2 */

  1534   HOTSPOT_JNI_GETOBJECTCLASS_RETURN(

  1535                                     ret);

  1536 #endif /* USDT2 */

  1537   return ret;

  1538 JNI_END

  1540 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))

  1541   JNIWrapper("IsInstanceOf");

  1542 #ifndef USDT2

  1543   DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);

  1544 #else /* USDT2 */

  1545   HOTSPOT_JNI_ISINSTANCEOF_ENTRY(

  1546                                  env, obj, clazz);

  1547 #endif /* USDT2 */

  1548   jboolean ret = JNI_TRUE;

  1549   if (obj != NULL) {

  1550     ret = JNI_FALSE;

  1551     Klass* k = java_lang_Class::as_Klass(

  1552       JNIHandles::resolve_non_null(clazz));

  1553     if (k != NULL) {

  1554       ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;

  1555     }

  1556   }

  1557 #ifndef USDT2

  1558   DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);

  1559 #else /* USDT2 */

  1560   HOTSPOT_JNI_ISINSTANCEOF_RETURN(

  1561                                   ret);

  1562 #endif /* USDT2 */

  1563   return ret;

  1564 JNI_END

  1567 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,

  1568                                const char *sig, bool is_static, TRAPS) {

  1569   // %%%% This code should probably just call into a method in the LinkResolver

  1570   //

  1571   // The class should have been loaded (we have an instance of the class

  1572   // passed in) so the method and signature should already be in the symbol

  1573   // table.  If they're not there, the method doesn't exist.

  1574   const char *name_to_probe = (name_str == NULL)

  1575                         ? vmSymbols::object_initializer_name()->as_C_string()

  1576                         : name_str;

  1577   TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));

  1578   TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));

  1580   if (name == NULL || signature == NULL) {

  1581     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);

  1582   }

  1584   // Throw a NoSuchMethodError exception if we have an instance of a

  1585   // primitive java.lang.Class

  1586   if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {

  1587     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);

  1588   }

  1590   KlassHandle klass(THREAD,

  1591                java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  1593   // Make sure class is linked and initialized before handing id's out to

  1594   // Method*s.

  1595   klass()->initialize(CHECK_NULL);

  1597   Method* m;

  1598   if (name == vmSymbols::object_initializer_name() ||

  1599       name == vmSymbols::class_initializer_name()) {

  1600     // Never search superclasses for constructors

  1601     if (klass->oop_is_instance()) {

  1602       m = InstanceKlass::cast(klass())->find_method(name, signature);

  1603     } else {

  1604       m = NULL;

  1605     }

  1606   } else {

  1607     m = klass->lookup_method(name, signature);

  1608     if (m == NULL &&  klass->oop_is_instance()) {

  1609       m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);

  1610     }

  1611   }

  1612   if (m == NULL || (m->is_static() != is_static)) {

  1613     THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);

  1614   }

  1615   return m->jmethod_id();

  1616 }

  1619 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,

  1620           const char *name, const char *sig))

  1621   JNIWrapper("GetMethodID");

  1622 #ifndef USDT2

  1623   DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);

  1624 #else /* USDT2 */

  1625   HOTSPOT_JNI_GETMETHODID_ENTRY(

  1626                                 env, clazz, (char *) name, (char *) sig);

  1627 #endif /* USDT2 */

  1628   jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);

  1629 #ifndef USDT2

  1630   DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);

  1631 #else /* USDT2 */

  1632   HOTSPOT_JNI_GETMETHODID_RETURN(

  1633                                  (uintptr_t) ret);

  1634 #endif /* USDT2 */

  1635   return ret;

  1636 JNI_END

  1639 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,

  1640           const char *name, const char *sig))

  1641   JNIWrapper("GetStaticMethodID");

  1642 #ifndef USDT2

  1643   DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);

  1644 #else /* USDT2 */

  1645   HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(

  1646                                       env, (char *) clazz, (char *) name, (char *)sig);

  1647 #endif /* USDT2 */

  1648   jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);

  1649 #ifndef USDT2

  1650   DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);

  1651 #else /* USDT2 */

  1652   HOTSPOT_JNI_GETSTATICMETHODID_RETURN(

  1653                                        (uintptr_t) ret);

  1654 #endif /* USDT2 */

  1655   return ret;

  1656 JNI_END

  1660 //

  1661 // Calling Methods

  1662 //

  1664 #ifndef USDT2

  1665 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \

  1666 \

  1667   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\

  1668   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\

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

  1670 \

  1671 JNI_ENTRY(ResultType, \

  1672           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \

  1673   JNIWrapper("Call" XSTR(Result) "Method"); \

  1674 \

  1675   DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \

  1676   ResultType ret = 0;\

  1677   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \

  1678                      (const ResultType&)ret);\

  1679 \

  1680   va_list args; \

  1681   va_start(args, methodID); \

  1682   JavaValue jvalue(Tag); \

  1683   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1684   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1685   va_end(args); \

  1686   ret = jvalue.get_##ResultType(); \

  1687   return ret;\

  1688 JNI_END \

  1689 \

  1690 \

  1691 JNI_ENTRY(ResultType, \

  1692           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \

  1693   JNIWrapper("Call" XSTR(Result) "MethodV"); \

  1694 \

  1695   DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \

  1696   ResultType ret = 0;\

  1697   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \

  1698                      (const ResultType&)ret);\

  1699 \

  1700   JavaValue jvalue(Tag); \

  1701   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1702   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1703   ret = jvalue.get_##ResultType(); \

  1704   return ret;\

  1705 JNI_END \

  1706 \

  1707 \

  1708 JNI_ENTRY(ResultType, \

  1709           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \

  1710   JNIWrapper("Call" XSTR(Result) "MethodA"); \

  1711   DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \

  1712   ResultType ret = 0;\

  1713   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \

  1714                      (const ResultType&)ret);\

  1715 \

  1716   JavaValue jvalue(Tag); \

  1717   JNI_ArgumentPusherArray ap(methodID, args); \

  1718   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1719   ret = jvalue.get_##ResultType(); \

  1720   return ret;\

  1721 JNI_END

  1723 // the runtime type of subword integral basic types is integer

  1724 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)

  1725 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE)

  1726 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR)

  1727 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT)

  1729 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT)

  1730 DEFINE_CALLMETHOD(jint,     Int,     T_INT)

  1731 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG)

  1732 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT)

  1733 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE)

  1735 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);

  1736 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);

  1737 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);

  1739 #else /* USDT2 */

  1741 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \

  1742                           , EntryProbe, ReturnProbe)    \

  1743 \

  1744   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \

  1745                           , ReturnProbe);                          \

  1746 \

  1747 JNI_ENTRY(ResultType, \

  1748           jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \

  1749   JNIWrapper("Call" XSTR(Result) "Method"); \

  1750 \

  1751   EntryProbe; \

  1752   ResultType ret = 0;\

  1753   DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \

  1754                      (const ResultType&)ret);\

  1755 \

  1756   va_list args; \

  1757   va_start(args, methodID); \

  1758   JavaValue jvalue(Tag); \

  1759   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1760   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1761   va_end(args); \

  1762   ret = jvalue.get_##ResultType(); \

  1763   return ret;\

  1764 JNI_END

  1766 // the runtime type of subword integral basic types is integer

  1767 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN

  1768                   , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1769                   HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))

  1770 DEFINE_CALLMETHOD(jbyte,    Byte,    T_BYTE

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

  1772                   HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))

  1773 DEFINE_CALLMETHOD(jchar,    Char,    T_CHAR

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

  1775                   HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))

  1776 DEFINE_CALLMETHOD(jshort,   Short,   T_SHORT

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

  1778                   HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))

  1780 DEFINE_CALLMETHOD(jobject,  Object,  T_OBJECT

  1781                   , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1782                   HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))

  1783 DEFINE_CALLMETHOD(jint,     Int,     T_INT,

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

  1785                   HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))

  1786 DEFINE_CALLMETHOD(jlong,    Long,    T_LONG

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

  1788                   HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))

  1789 // Float and double probes don't return value because dtrace doesn't currently support it

  1790 DEFINE_CALLMETHOD(jfloat,   Float,   T_FLOAT

  1791                   , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),

  1792                   HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())

  1793 DEFINE_CALLMETHOD(jdouble,  Double,  T_DOUBLE

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

  1795                   HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())

  1797 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \

  1798                           , EntryProbe, ReturnProbe)    \

  1799 \

  1800   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \

  1801                           , ReturnProbe);                          \

  1802 \

  1803 JNI_ENTRY(ResultType, \

  1804           jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \

  1805   JNIWrapper("Call" XSTR(Result) "MethodV"); \

  1806 \

  1807   EntryProbe;\

  1808   ResultType ret = 0;\

  1809   DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \

  1810                      (const ResultType&)ret);\

  1811 \

  1812   JavaValue jvalue(Tag); \

  1813   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1814   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1815   ret = jvalue.get_##ResultType(); \

  1816   return ret;\

  1817 JNI_END

  1819 // the runtime type of subword integral basic types is integer

  1820 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN

  1821                   , HOTSPOT_JNI_CALLBOOLEANMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1822                   HOTSPOT_JNI_CALLBOOLEANMETHODV_RETURN(_ret_ref))

  1823 DEFINE_CALLMETHODV(jbyte,    Byte,    T_BYTE

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

  1825                   HOTSPOT_JNI_CALLBYTEMETHODV_RETURN(_ret_ref))

  1826 DEFINE_CALLMETHODV(jchar,    Char,    T_CHAR

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

  1828                   HOTSPOT_JNI_CALLCHARMETHODV_RETURN(_ret_ref))

  1829 DEFINE_CALLMETHODV(jshort,   Short,   T_SHORT

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

  1831                   HOTSPOT_JNI_CALLSHORTMETHODV_RETURN(_ret_ref))

  1833 DEFINE_CALLMETHODV(jobject,  Object,  T_OBJECT

  1834                   , HOTSPOT_JNI_CALLOBJECTMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1835                   HOTSPOT_JNI_CALLOBJECTMETHODV_RETURN(_ret_ref))

  1836 DEFINE_CALLMETHODV(jint,     Int,     T_INT,

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

  1838                   HOTSPOT_JNI_CALLINTMETHODV_RETURN(_ret_ref))

  1839 DEFINE_CALLMETHODV(jlong,    Long,    T_LONG

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

  1841                   HOTSPOT_JNI_CALLLONGMETHODV_RETURN(_ret_ref))

  1842 // Float and double probes don't return value because dtrace doesn't currently support it

  1843 DEFINE_CALLMETHODV(jfloat,   Float,   T_FLOAT

  1844                   , HOTSPOT_JNI_CALLFLOATMETHODV_ENTRY(env, obj, (uintptr_t)methodID),

  1845                   HOTSPOT_JNI_CALLFLOATMETHODV_RETURN())

  1846 DEFINE_CALLMETHODV(jdouble,  Double,  T_DOUBLE

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

  1848                   HOTSPOT_JNI_CALLDOUBLEMETHODV_RETURN())

  1850 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \

  1851                           , EntryProbe, ReturnProbe)    \

  1852 \

  1853   DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \

  1854                           , ReturnProbe);                          \

  1855 \

  1856 JNI_ENTRY(ResultType, \

  1857           jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \

  1858   JNIWrapper("Call" XSTR(Result) "MethodA"); \

  1859   EntryProbe; \

  1860   ResultType ret = 0;\

  1861   DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \

  1862                      (const ResultType&)ret);\

  1863 \

  1864   JavaValue jvalue(Tag); \

  1865   JNI_ArgumentPusherArray ap(methodID, args); \

  1866   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \

  1867   ret = jvalue.get_##ResultType(); \

  1868   return ret;\

  1869 JNI_END

  1871 // the runtime type of subword integral basic types is integer

  1872 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN

  1873                   , HOTSPOT_JNI_CALLBOOLEANMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1874                   HOTSPOT_JNI_CALLBOOLEANMETHODA_RETURN(_ret_ref))

  1875 DEFINE_CALLMETHODA(jbyte,    Byte,    T_BYTE

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

  1877                   HOTSPOT_JNI_CALLBYTEMETHODA_RETURN(_ret_ref))

  1878 DEFINE_CALLMETHODA(jchar,    Char,    T_CHAR

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

  1880                   HOTSPOT_JNI_CALLCHARMETHODA_RETURN(_ret_ref))

  1881 DEFINE_CALLMETHODA(jshort,   Short,   T_SHORT

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

  1883                   HOTSPOT_JNI_CALLSHORTMETHODA_RETURN(_ret_ref))

  1885 DEFINE_CALLMETHODA(jobject,  Object,  T_OBJECT

  1886                   , HOTSPOT_JNI_CALLOBJECTMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1887                   HOTSPOT_JNI_CALLOBJECTMETHODA_RETURN(_ret_ref))

  1888 DEFINE_CALLMETHODA(jint,     Int,     T_INT,

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

  1890                   HOTSPOT_JNI_CALLINTMETHODA_RETURN(_ret_ref))

  1891 DEFINE_CALLMETHODA(jlong,    Long,    T_LONG

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

  1893                   HOTSPOT_JNI_CALLLONGMETHODA_RETURN(_ret_ref))

  1894 // Float and double probes don't return value because dtrace doesn't currently support it

  1895 DEFINE_CALLMETHODA(jfloat,   Float,   T_FLOAT

  1896                   , HOTSPOT_JNI_CALLFLOATMETHODA_ENTRY(env, obj, (uintptr_t)methodID),

  1897                   HOTSPOT_JNI_CALLFLOATMETHODA_RETURN())

  1898 DEFINE_CALLMETHODA(jdouble,  Double,  T_DOUBLE

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

  1900                   HOTSPOT_JNI_CALLDOUBLEMETHODA_RETURN())

  1902 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());

  1903 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());

  1904 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());

  1906 #endif /* USDT2 */

  1908 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))

  1909   JNIWrapper("CallVoidMethod");

  1910 #ifndef USDT2

  1911   DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);

  1912 #else /* USDT2 */

  1913   HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(

  1914                                    env, obj, (uintptr_t) methodID);

  1915 #endif /* USDT2 */

  1916   DT_VOID_RETURN_MARK(CallVoidMethod);

  1918   va_list args;

  1919   va_start(args, methodID);

  1920   JavaValue jvalue(T_VOID);

  1921   JNI_ArgumentPusherVaArg ap(methodID, args);

  1922   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);

  1923   va_end(args);

  1924 JNI_END

  1927 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))

  1928   JNIWrapper("CallVoidMethodV");

  1929 #ifndef USDT2

  1930   DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);

  1931 #else /* USDT2 */

  1932   HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(

  1933                                     env, obj, (uintptr_t) methodID);

  1934 #endif /* USDT2 */

  1935   DT_VOID_RETURN_MARK(CallVoidMethodV);

  1937   JavaValue jvalue(T_VOID);

  1938   JNI_ArgumentPusherVaArg ap(methodID, args);

  1939   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);

  1940 JNI_END

  1943 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))

  1944   JNIWrapper("CallVoidMethodA");

  1945 #ifndef USDT2

  1946   DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);

  1947 #else /* USDT2 */

  1948   HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(

  1949                                     env, obj, (uintptr_t) methodID);

  1950 #endif /* USDT2 */

  1951   DT_VOID_RETURN_MARK(CallVoidMethodA);

  1953   JavaValue jvalue(T_VOID);

  1954   JNI_ArgumentPusherArray ap(methodID, args);

  1955   jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);

  1956 JNI_END

  1959 #ifndef USDT2

  1960 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \

  1961 \

  1962   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\

  1963   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\

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

  1965 \

  1966 JNI_ENTRY(ResultType, \

  1967           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \

  1968   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \

  1969 \

  1970   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\

  1971   ResultType ret;\

  1972   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \

  1973                      (const ResultType&)ret);\

  1974 \

  1975   va_list args; \

  1976   va_start(args, methodID); \

  1977   JavaValue jvalue(Tag); \

  1978   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1979   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  1980   va_end(args); \

  1981   ret = jvalue.get_##ResultType(); \

  1982   return ret;\

  1983 JNI_END \

  1984 \

  1985 JNI_ENTRY(ResultType, \

  1986           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \

  1987   JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \

  1988   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\

  1989   ResultType ret;\

  1990   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \

  1991                      (const ResultType&)ret);\

  1992 \

  1993   JavaValue jvalue(Tag); \

  1994   JNI_ArgumentPusherVaArg ap(methodID, args); \

  1995   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  1996   ret = jvalue.get_##ResultType(); \

  1997   return ret;\

  1998 JNI_END \

  1999 \

  2000 JNI_ENTRY(ResultType, \

  2001           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \

  2002   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \

  2003   DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\

  2004   ResultType ret;\

  2005   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \

  2006                      (const ResultType&)ret);\

  2007 \

  2008   JavaValue jvalue(Tag); \

  2009   JNI_ArgumentPusherArray ap(methodID, args); \

  2010   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2011   ret = jvalue.get_##ResultType(); \

  2012   return ret;\

  2013 JNI_END

  2015 // the runtime type of subword integral basic types is integer

  2016 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)

  2017 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE)

  2018 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR)

  2019 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT)

  2021 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT)

  2022 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT)

  2023 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG)

  2024 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT)

  2025 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE)

  2028 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);

  2029 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);

  2030 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);

  2032 #else /* USDT2 */

  2034 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \

  2035                                     , EntryProbe, ReturnProbe)      \

  2036 \

  2037   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \

  2038                           , ReturnProbe);\

  2039 \

  2040 JNI_ENTRY(ResultType, \

  2041           jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \

  2042   JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \

  2043 \

  2044   EntryProbe;\

  2045   ResultType ret;\

  2046   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \

  2047                      (const ResultType&)ret);\

  2048 \

  2049   va_list args; \

  2050   va_start(args, methodID); \

  2051   JavaValue jvalue(Tag); \

  2052   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2053   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2054   va_end(args); \

  2055   ret = jvalue.get_##ResultType(); \

  2056   return ret;\

  2057 JNI_END

  2059 // the runtime type of subword integral basic types is integer

  2060 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN

  2061                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2062                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))

  2063 DEFINE_CALLNONVIRTUALMETHOD(jbyte,    Byte,    T_BYTE

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

  2065                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))

  2066 DEFINE_CALLNONVIRTUALMETHOD(jchar,    Char,    T_CHAR

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

  2068                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))

  2069 DEFINE_CALLNONVIRTUALMETHOD(jshort,   Short,   T_SHORT

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

  2071                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))

  2073 DEFINE_CALLNONVIRTUALMETHOD(jobject,  Object,  T_OBJECT

  2074                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2075                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))

  2076 DEFINE_CALLNONVIRTUALMETHOD(jint,     Int,     T_INT

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

  2078                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))

  2079 DEFINE_CALLNONVIRTUALMETHOD(jlong,    Long,    T_LONG

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

  2081 // Float and double probes don't return value because dtrace doesn't currently support it

  2082                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))

  2083 DEFINE_CALLNONVIRTUALMETHOD(jfloat,   Float,   T_FLOAT

  2084                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2085                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())

  2086 DEFINE_CALLNONVIRTUALMETHOD(jdouble,  Double,  T_DOUBLE

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

  2088                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())

  2090 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \

  2091                                     , EntryProbe, ReturnProbe)      \

  2092 \

  2093   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \

  2094                           , ReturnProbe);\

  2095 \

  2096 JNI_ENTRY(ResultType, \

  2097           jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \

  2098   JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \

  2099 \

  2100   EntryProbe;\

  2101   ResultType ret;\

  2102   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \

  2103                      (const ResultType&)ret);\

  2104 \

  2105   JavaValue jvalue(Tag); \

  2106   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2107   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2108   ret = jvalue.get_##ResultType(); \

  2109   return ret;\

  2110 JNI_END

  2112 // the runtime type of subword integral basic types is integer

  2113 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN

  2114                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2115                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))

  2116 DEFINE_CALLNONVIRTUALMETHODV(jbyte,    Byte,    T_BYTE

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

  2118                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))

  2119 DEFINE_CALLNONVIRTUALMETHODV(jchar,    Char,    T_CHAR

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

  2121                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))

  2122 DEFINE_CALLNONVIRTUALMETHODV(jshort,   Short,   T_SHORT

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

  2124                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))

  2126 DEFINE_CALLNONVIRTUALMETHODV(jobject,  Object,  T_OBJECT

  2127                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2128                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))

  2129 DEFINE_CALLNONVIRTUALMETHODV(jint,     Int,     T_INT

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

  2131                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))

  2132 DEFINE_CALLNONVIRTUALMETHODV(jlong,    Long,    T_LONG

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

  2134 // Float and double probes don't return value because dtrace doesn't currently support it

  2135                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))

  2136 DEFINE_CALLNONVIRTUALMETHODV(jfloat,   Float,   T_FLOAT

  2137                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2138                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())

  2139 DEFINE_CALLNONVIRTUALMETHODV(jdouble,  Double,  T_DOUBLE

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

  2141                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())

  2143 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \

  2144                                     , EntryProbe, ReturnProbe)      \

  2145 \

  2146   DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \

  2147                           , ReturnProbe);\

  2148 \

  2149 JNI_ENTRY(ResultType, \

  2150           jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \

  2151   JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \

  2152 \

  2153   EntryProbe;\

  2154   ResultType ret;\

  2155   DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \

  2156                      (const ResultType&)ret);\

  2157 \

  2158   JavaValue jvalue(Tag); \

  2159   JNI_ArgumentPusherArray ap(methodID, args); \

  2160   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \

  2161   ret = jvalue.get_##ResultType(); \

  2162   return ret;\

  2163 JNI_END

  2165 // the runtime type of subword integral basic types is integer

  2166 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN

  2167                             , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2168                             HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))

  2169 DEFINE_CALLNONVIRTUALMETHODA(jbyte,    Byte,    T_BYTE

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

  2171                             HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))

  2172 DEFINE_CALLNONVIRTUALMETHODA(jchar,    Char,    T_CHAR

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

  2174                             HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))

  2175 DEFINE_CALLNONVIRTUALMETHODA(jshort,   Short,   T_SHORT

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

  2177                             HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))

  2179 DEFINE_CALLNONVIRTUALMETHODA(jobject,  Object,  T_OBJECT

  2180                             , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2181                             HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))

  2182 DEFINE_CALLNONVIRTUALMETHODA(jint,     Int,     T_INT

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

  2184                             HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))

  2185 DEFINE_CALLNONVIRTUALMETHODA(jlong,    Long,    T_LONG

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

  2187 // Float and double probes don't return value because dtrace doesn't currently support it

  2188                             HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))

  2189 DEFINE_CALLNONVIRTUALMETHODA(jfloat,   Float,   T_FLOAT

  2190                             , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),

  2191                             HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())

  2192 DEFINE_CALLNONVIRTUALMETHODA(jdouble,  Double,  T_DOUBLE

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

  2194                             HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())

  2196 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod

  2197                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());

  2198 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV

  2199                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());

  2200 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA

  2201                          , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());

  2202 #endif /* USDT2 */

  2204 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))

  2205   JNIWrapper("CallNonvirtualVoidMethod");

  2207 #ifndef USDT2

  2208   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,

  2209                env, obj, cls, methodID);

  2210 #else /* USDT2 */

  2211   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(

  2212                env, obj, cls, (uintptr_t) methodID);

  2213 #endif /* USDT2 */

  2214   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);

  2216   va_list args;

  2217   va_start(args, methodID);

  2218   JavaValue jvalue(T_VOID);

  2219   JNI_ArgumentPusherVaArg ap(methodID, args);

  2220   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);

  2221   va_end(args);

  2222 JNI_END

  2225 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))

  2226   JNIWrapper("CallNonvirtualVoidMethodV");

  2228 #ifndef USDT2

  2229   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,

  2230                env, obj, cls, methodID);

  2231 #else /* USDT2 */

  2232   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(

  2233                env, obj, cls, (uintptr_t) methodID);

  2234 #endif /* USDT2 */

  2235   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);

  2237   JavaValue jvalue(T_VOID);

  2238   JNI_ArgumentPusherVaArg ap(methodID, args);

  2239   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);

  2240 JNI_END

  2243 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))

  2244   JNIWrapper("CallNonvirtualVoidMethodA");

  2245 #ifndef USDT2

  2246   DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,

  2247                 env, obj, cls, methodID);

  2248 #else /* USDT2 */

  2249   HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(

  2250                 env, obj, cls, (uintptr_t) methodID);

  2251 #endif /* USDT2 */

  2252   DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);

  2253   JavaValue jvalue(T_VOID);

  2254   JNI_ArgumentPusherArray ap(methodID, args);

  2255   jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);

  2256 JNI_END

  2259 #ifndef USDT2

  2260 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \

  2261 \

  2262   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\

  2263   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\

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

  2265 \

  2266 JNI_ENTRY(ResultType, \

  2267           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \

  2268   JNIWrapper("CallStatic" XSTR(Result) "Method"); \

  2269 \

  2270   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\

  2271   ResultType ret = 0;\

  2272   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \

  2273                      (const ResultType&)ret);\

  2274 \

  2275   va_list args; \

  2276   va_start(args, methodID); \

  2277   JavaValue jvalue(Tag); \

  2278   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2279   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2280   va_end(args); \

  2281   ret = jvalue.get_##ResultType(); \

  2282   return ret;\

  2283 JNI_END \

  2284 \

  2285 JNI_ENTRY(ResultType, \

  2286           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \

  2287   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \

  2288   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\

  2289   ResultType ret = 0;\

  2290   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \

  2291                      (const ResultType&)ret);\

  2292 \

  2293   JavaValue jvalue(Tag); \

  2294   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2295   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2296   ret = jvalue.get_##ResultType(); \

  2297   return ret;\

  2298 JNI_END \

  2299 \

  2300 JNI_ENTRY(ResultType, \

  2301           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \

  2302   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \

  2303   DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\

  2304   ResultType ret = 0;\

  2305   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \

  2306                      (const ResultType&)ret);\

  2307 \

  2308   JavaValue jvalue(Tag); \

  2309   JNI_ArgumentPusherArray ap(methodID, args); \

  2310   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2311   ret = jvalue.get_##ResultType(); \

  2312   return ret;\

  2313 JNI_END

  2315 // the runtime type of subword integral basic types is integer

  2316 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)

  2317 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE)

  2318 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR)

  2319 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT)

  2321 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT)

  2322 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT)

  2323 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG)

  2324 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT)

  2325 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE)

  2328 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);

  2329 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);

  2330 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);

  2332 #else /* USDT2 */

  2334 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \

  2335                                 , EntryProbe, ResultProbe) \

  2336 \

  2337   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \

  2338                           , ResultProbe);                               \

  2339 \

  2340 JNI_ENTRY(ResultType, \

  2341           jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \

  2342   JNIWrapper("CallStatic" XSTR(Result) "Method"); \

  2343 \

  2344   EntryProbe; \

  2345   ResultType ret = 0;\

  2346   DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \

  2347                      (const ResultType&)ret);\

  2348 \

  2349   va_list args; \

  2350   va_start(args, methodID); \

  2351   JavaValue jvalue(Tag); \

  2352   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2353   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2354   va_end(args); \

  2355   ret = jvalue.get_##ResultType(); \

  2356   return ret;\

  2357 JNI_END

  2359 // the runtime type of subword integral basic types is integer

  2360 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN

  2361                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2362                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));

  2363 DEFINE_CALLSTATICMETHOD(jbyte,    Byte,    T_BYTE

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

  2365                         HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));

  2366 DEFINE_CALLSTATICMETHOD(jchar,    Char,    T_CHAR

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

  2368                         HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));

  2369 DEFINE_CALLSTATICMETHOD(jshort,   Short,   T_SHORT

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

  2371                         HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));

  2373 DEFINE_CALLSTATICMETHOD(jobject,  Object,  T_OBJECT

  2374                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2375                         HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));

  2376 DEFINE_CALLSTATICMETHOD(jint,     Int,     T_INT

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

  2378                         HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));

  2379 DEFINE_CALLSTATICMETHOD(jlong,    Long,    T_LONG

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

  2381                         HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));

  2382 // Float and double probes don't return value because dtrace doesn't currently support it

  2383 DEFINE_CALLSTATICMETHOD(jfloat,   Float,   T_FLOAT

  2384                         , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),

  2385                         HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());

  2386 DEFINE_CALLSTATICMETHOD(jdouble,  Double,  T_DOUBLE

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

  2388                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());

  2390 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \

  2391                                 , EntryProbe, ResultProbe) \

  2392 \

  2393   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \

  2394                           , ResultProbe);                               \

  2395 \

  2396 JNI_ENTRY(ResultType, \

  2397           jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \

  2398   JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \

  2399 \

  2400   EntryProbe; \

  2401   ResultType ret = 0;\

  2402   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \

  2403                      (const ResultType&)ret);\

  2404 \

  2405   JavaValue jvalue(Tag); \

  2406   JNI_ArgumentPusherVaArg ap(methodID, args); \

  2407   /* Make sure class is initialized before trying to invoke its method */ \

  2408   KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \

  2409   k()->initialize(CHECK_0); \

  2410   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2411   va_end(args); \

  2412   ret = jvalue.get_##ResultType(); \

  2413   return ret;\

  2414 JNI_END

  2416 // the runtime type of subword integral basic types is integer

  2417 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN

  2418                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2419                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));

  2420 DEFINE_CALLSTATICMETHODV(jbyte,    Byte,    T_BYTE

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

  2422                         HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));

  2423 DEFINE_CALLSTATICMETHODV(jchar,    Char,    T_CHAR

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

  2425                         HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));

  2426 DEFINE_CALLSTATICMETHODV(jshort,   Short,   T_SHORT

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

  2428                         HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));

  2430 DEFINE_CALLSTATICMETHODV(jobject,  Object,  T_OBJECT

  2431                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2432                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));

  2433 DEFINE_CALLSTATICMETHODV(jint,     Int,     T_INT

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

  2435                         HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));

  2436 DEFINE_CALLSTATICMETHODV(jlong,    Long,    T_LONG

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

  2438                         HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));

  2439 // Float and double probes don't return value because dtrace doesn't currently support it

  2440 DEFINE_CALLSTATICMETHODV(jfloat,   Float,   T_FLOAT

  2441                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),

  2442                         HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());

  2443 DEFINE_CALLSTATICMETHODV(jdouble,  Double,  T_DOUBLE

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

  2445                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());

  2447 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \

  2448                                 , EntryProbe, ResultProbe) \

  2449 \

  2450   DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \

  2451                           , ResultProbe);                               \

  2452 \

  2453 JNI_ENTRY(ResultType, \

  2454           jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \

  2455   JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \

  2456 \

  2457   EntryProbe; \

  2458   ResultType ret = 0;\

  2459   DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \

  2460                      (const ResultType&)ret);\

  2461 \

  2462   JavaValue jvalue(Tag); \

  2463   JNI_ArgumentPusherArray ap(methodID, args); \

  2464   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \

  2465   ret = jvalue.get_##ResultType(); \

  2466   return ret;\

  2467 JNI_END

  2469 // the runtime type of subword integral basic types is integer

  2470 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN

  2471                         , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2472                         HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));

  2473 DEFINE_CALLSTATICMETHODA(jbyte,    Byte,    T_BYTE

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

  2475                         HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));

  2476 DEFINE_CALLSTATICMETHODA(jchar,    Char,    T_CHAR

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

  2478                         HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));

  2479 DEFINE_CALLSTATICMETHODA(jshort,   Short,   T_SHORT

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

  2481                         HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));

  2483 DEFINE_CALLSTATICMETHODA(jobject,  Object,  T_OBJECT

  2484                         , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2485                         HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));

  2486 DEFINE_CALLSTATICMETHODA(jint,     Int,     T_INT

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

  2488                         HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));

  2489 DEFINE_CALLSTATICMETHODA(jlong,    Long,    T_LONG

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

  2491                         HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));

  2492 // Float and double probes don't return value because dtrace doesn't currently support it

  2493 DEFINE_CALLSTATICMETHODA(jfloat,   Float,   T_FLOAT

  2494                         , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),

  2495                         HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());

  2496 DEFINE_CALLSTATICMETHODA(jdouble,  Double,  T_DOUBLE

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

  2498                         HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());

  2500 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod

  2501                          , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());

  2502 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV

  2503                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());

  2504 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA

  2505                          , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());

  2506 #endif /* USDT2 */

  2508 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))

  2509   JNIWrapper("CallStaticVoidMethod");

  2510 #ifndef USDT2

  2511   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);

  2512 #else /* USDT2 */

  2513   HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(

  2514                                          env, cls, (uintptr_t) methodID);

  2515 #endif /* USDT2 */

  2516   DT_VOID_RETURN_MARK(CallStaticVoidMethod);

  2518   va_list args;

  2519   va_start(args, methodID);

  2520   JavaValue jvalue(T_VOID);

  2521   JNI_ArgumentPusherVaArg ap(methodID, args);

  2522   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);

  2523   va_end(args);

  2524 JNI_END

  2527 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))

  2528   JNIWrapper("CallStaticVoidMethodV");

  2529 #ifndef USDT2

  2530   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);

  2531 #else /* USDT2 */

  2532   HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(

  2533                                           env, cls, (uintptr_t) methodID);

  2534 #endif /* USDT2 */

  2535   DT_VOID_RETURN_MARK(CallStaticVoidMethodV);

  2537   JavaValue jvalue(T_VOID);

  2538   JNI_ArgumentPusherVaArg ap(methodID, args);

  2539   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);

  2540 JNI_END

  2543 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))

  2544   JNIWrapper("CallStaticVoidMethodA");

  2545 #ifndef USDT2

  2546   DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);

  2547 #else /* USDT2 */

  2548   HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(

  2549                                           env, cls, (uintptr_t) methodID);

  2550 #endif /* USDT2 */

  2551   DT_VOID_RETURN_MARK(CallStaticVoidMethodA);

  2553   JavaValue jvalue(T_VOID);

  2554   JNI_ArgumentPusherArray ap(methodID, args);

  2555   jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);

  2556 JNI_END

  2559 //

  2560 // Accessing Fields

  2561 //

  2564 #ifndef USDT2

  2565 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);

  2566 #else /* USDT2 */

  2567 DT_RETURN_MARK_DECL(GetFieldID, jfieldID

  2568                     , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));

  2569 #endif /* USDT2 */

  2571 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,

  2572           const char *name, const char *sig))

  2573   JNIWrapper("GetFieldID");

  2574 #ifndef USDT2

  2575   DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);

  2576 #else /* USDT2 */

  2577   HOTSPOT_JNI_GETFIELDID_ENTRY(

  2578                                env, clazz, (char *) name, (char *) sig);

  2579 #endif /* USDT2 */

  2580   jfieldID ret = 0;

  2581   DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);

  2583   // The class should have been loaded (we have an instance of the class

  2584   // passed in) so the field and signature should already be in the symbol

  2585   // table.  If they're not there, the field doesn't exist.

  2586   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));

  2587   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));

  2588   if (fieldname == NULL || signame == NULL) {

  2589     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2590   }

  2591   KlassHandle k(THREAD,

  2592                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  2593   // Make sure class is initialized before handing id's out to fields

  2594   k()->initialize(CHECK_NULL);

  2596   fieldDescriptor fd;

  2597   if (!k()->oop_is_instance() ||

  2598       !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {

  2599     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2600   }

  2602   // A jfieldID for a non-static field is simply the offset of the field within the instanceOop

  2603   // It may also have hash bits for k, if VerifyJNIFields is turned on.

  2604   ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());

  2605   return ret;

  2606 JNI_END

  2609 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))

  2610   JNIWrapper("GetObjectField");

  2611 #ifndef USDT2

  2612   DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);

  2613 #else /* USDT2 */

  2614   HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(

  2615                                    env, obj, (uintptr_t) fieldID);

  2616 #endif /* USDT2 */

  2617   oop o = JNIHandles::resolve_non_null(obj);

  2618   Klass* k = o->klass();

  2619   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);

  2620   // Keep JVMTI addition small and only check enabled flag here.

  2621   // jni_GetField_probe() assumes that is okay to create handles.

  2622   if (JvmtiExport::should_post_field_access()) {

  2623     o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);

  2624   }

  2625   jobject ret = JNIHandles::make_local(env, o->obj_field(offset));

  2626 #if INCLUDE_ALL_GCS

  2627   // If G1 is enabled and we are accessing the value of the referent

  2628   // field in a reference object then we need to register a non-null

  2629   // referent with the SATB barrier.

  2630   if (UseG1GC) {

  2631     bool needs_barrier = false;

  2633     if (ret != NULL &&

  2634         offset == java_lang_ref_Reference::referent_offset &&

  2635         InstanceKlass::cast(k)->reference_type() != REF_NONE) {

  2636       assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");

  2637       needs_barrier = true;

  2638     }

  2640     if (needs_barrier) {

  2641       oop referent = JNIHandles::resolve(ret);

  2642       G1SATBCardTableModRefBS::enqueue(referent);

  2643     }

  2644   }

  2645 #endif // INCLUDE_ALL_GCS

  2646 #ifndef USDT2

  2647   DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);

  2648 #else /* USDT2 */

  2649 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(

  2650                                   ret);

  2651 #endif /* USDT2 */

  2652   return ret;

  2653 JNI_END

  2656 #ifndef USDT2

  2657 #define DEFINE_GETFIELD(Return,Fieldname,Result) \

  2658 \

  2659   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\

  2660 \

  2661 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \

  2662   JNIWrapper("Get" XSTR(Result) "Field"); \

  2663 \

  2664   DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\

  2665   Return ret = 0;\

  2666   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\

  2667 \

  2668   oop o = JNIHandles::resolve_non_null(obj); \

  2669   Klass* k = o->klass(); \

  2670   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2671   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2672   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \

  2673   /* and creates a ResetNoHandleMark.                                   */ \

  2674   if (JvmtiExport::should_post_field_access()) { \

  2675     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \

  2676   } \

  2677   ret = o->Fieldname##_field(offset); \

  2678   return ret; \

  2679 JNI_END

  2681 DEFINE_GETFIELD(jboolean, bool,   Boolean)

  2682 DEFINE_GETFIELD(jbyte,    byte,   Byte)

  2683 DEFINE_GETFIELD(jchar,    char,   Char)

  2684 DEFINE_GETFIELD(jshort,   short,  Short)

  2685 DEFINE_GETFIELD(jint,     int,    Int)

  2686 DEFINE_GETFIELD(jlong,    long,   Long)

  2687 DEFINE_GETFIELD(jfloat,   float,  Float)

  2688 DEFINE_GETFIELD(jdouble,  double, Double)

  2690 #else /* USDT2 */

  2692 #define DEFINE_GETFIELD(Return,Fieldname,Result \

  2693   , EntryProbe, ReturnProbe) \

  2694 \

  2695   DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \

  2696   , ReturnProbe); \

  2697 \

  2698 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \

  2699   JNIWrapper("Get" XSTR(Result) "Field"); \

  2700 \

  2701   EntryProbe; \

  2702   Return ret = 0;\

  2703   DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\

  2704 \

  2705   oop o = JNIHandles::resolve_non_null(obj); \

  2706   Klass* k = o->klass(); \

  2707   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2708   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2709   /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \

  2710   /* and creates a ResetNoHandleMark.                                   */ \

  2711   if (JvmtiExport::should_post_field_access()) { \

  2712     o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \

  2713   } \

  2714   ret = o->Fieldname##_field(offset); \

  2715   return ret; \

  2716 JNI_END

  2718 DEFINE_GETFIELD(jboolean, bool,   Boolean

  2719                 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2720                 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))

  2721 DEFINE_GETFIELD(jbyte,    byte,   Byte

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

  2723                 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))

  2724 DEFINE_GETFIELD(jchar,    char,   Char

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

  2726                 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))

  2727 DEFINE_GETFIELD(jshort,   short,  Short

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

  2729                 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))

  2730 DEFINE_GETFIELD(jint,     int,    Int

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

  2732                 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))

  2733 DEFINE_GETFIELD(jlong,    long,   Long

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

  2735                 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))

  2736 // Float and double probes don't return value because dtrace doesn't currently support it

  2737 DEFINE_GETFIELD(jfloat,   float,  Float

  2738                 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2739                 HOTSPOT_JNI_GETFLOATFIELD_RETURN())

  2740 DEFINE_GETFIELD(jdouble,  double, Double

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

  2742                 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())

  2743 #endif /* USDT2 */

  2745 address jni_GetBooleanField_addr() {

  2746   return (address)jni_GetBooleanField;

  2747 }

  2748 address jni_GetByteField_addr() {

  2749   return (address)jni_GetByteField;

  2750 }

  2751 address jni_GetCharField_addr() {

  2752   return (address)jni_GetCharField;

  2753 }

  2754 address jni_GetShortField_addr() {

  2755   return (address)jni_GetShortField;

  2756 }

  2757 address jni_GetIntField_addr() {

  2758   return (address)jni_GetIntField;

  2759 }

  2760 address jni_GetLongField_addr() {

  2761   return (address)jni_GetLongField;

  2762 }

  2763 address jni_GetFloatField_addr() {

  2764   return (address)jni_GetFloatField;

  2765 }

  2766 address jni_GetDoubleField_addr() {

  2767   return (address)jni_GetDoubleField;

  2768 }

  2770 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))

  2771   JNIWrapper("SetObjectField");

  2772 #ifndef USDT2

  2773   DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);

  2774 #else /* USDT2 */

  2775   HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(

  2776                                    env, obj, (uintptr_t) fieldID, value);

  2777 #endif /* USDT2 */

  2778   oop o = JNIHandles::resolve_non_null(obj);

  2779   Klass* k = o->klass();

  2780   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);

  2781   // Keep JVMTI addition small and only check enabled flag here.

  2782   // jni_SetField_probe_nh() assumes that is not okay to create handles

  2783   // and creates a ResetNoHandleMark.

  2784   if (JvmtiExport::should_post_field_modification()) {

  2785     jvalue field_value;

  2786     field_value.l = value;

  2787     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);

  2788   }

  2789   o->obj_field_put(offset, JNIHandles::resolve(value));

  2790 #ifndef USDT2

  2791   DTRACE_PROBE(hotspot_jni, SetObjectField__return);

  2792 #else /* USDT2 */

  2793   HOTSPOT_JNI_SETOBJECTFIELD_RETURN(

  2794 );

  2795 #endif /* USDT2 */

  2796 JNI_END

  2798 #ifndef USDT2

  2799 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \

  2800 \

  2801 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \

  2802   JNIWrapper("Set" XSTR(Result) "Field"); \

  2803 \

  2804   FP_SELECT_##Result( \

  2805     DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \

  2806     DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \

  2807 \

  2808   oop o = JNIHandles::resolve_non_null(obj); \

  2809   Klass* k = o->klass(); \

  2810   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2811   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2812   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \

  2813   /* and creates a ResetNoHandleMark.                                   */ \

  2814   if (JvmtiExport::should_post_field_modification()) { \

  2815     jvalue field_value; \

  2816     field_value.unionType = value; \

  2817     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \

  2818   } \

  2819   o->Fieldname##_field_put(offset, value); \

  2820   DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\

  2821 JNI_END

  2823 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z)

  2824 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b)

  2825 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c)

  2826 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s)

  2827 DEFINE_SETFIELD(jint,     int,    Int,     'I', i)

  2828 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j)

  2829 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f)

  2830 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d)

  2832 #else /* USDT2 */

  2834 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \

  2835                         , EntryProbe, ReturnProbe) \

  2836 \

  2837 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \

  2838   JNIWrapper("Set" XSTR(Result) "Field"); \

  2839 \

  2840   EntryProbe; \

  2841 \

  2842   oop o = JNIHandles::resolve_non_null(obj); \

  2843   Klass* k = o->klass(); \

  2844   int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);  \

  2845   /* Keep JVMTI addition small and only check enabled flag here.       */ \

  2846   /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \

  2847   /* and creates a ResetNoHandleMark.                                   */ \

  2848   if (JvmtiExport::should_post_field_modification()) { \

  2849     jvalue field_value; \

  2850     field_value.unionType = value; \

  2851     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \

  2852   } \

  2853   if (SigType == 'Z') { value = ((jboolean)value) & 1; } \

  2854   o->Fieldname##_field_put(offset, value); \

  2855   ReturnProbe; \

  2856 JNI_END

  2858 DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z

  2859                 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),

  2860                 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())

  2861 DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b

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

  2863                 HOTSPOT_JNI_SETBYTEFIELD_RETURN())

  2864 DEFINE_SETFIELD(jchar,    char,   Char,    'C', c

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

  2866                 HOTSPOT_JNI_SETCHARFIELD_RETURN())

  2867 DEFINE_SETFIELD(jshort,   short,  Short,   'S', s

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

  2869                 HOTSPOT_JNI_SETSHORTFIELD_RETURN())

  2870 DEFINE_SETFIELD(jint,     int,    Int,     'I', i

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

  2872                 HOTSPOT_JNI_SETINTFIELD_RETURN())

  2873 DEFINE_SETFIELD(jlong,    long,   Long,    'J', j

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

  2875                 HOTSPOT_JNI_SETLONGFIELD_RETURN())

  2876 // Float and double probes don't return value because dtrace doesn't currently support it

  2877 DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f

  2878                 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2879                 HOTSPOT_JNI_SETFLOATFIELD_RETURN())

  2880 DEFINE_SETFIELD(jdouble,  double, Double,  'D', d

  2881                 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),

  2882                 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())

  2883 #endif /* USDT2 */

  2885 #ifndef USDT2

  2886 DT_RETURN_MARK_DECL(ToReflectedField, jobject);

  2887 #else /* USDT2 */

  2888 DT_RETURN_MARK_DECL(ToReflectedField, jobject

  2889                     , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));

  2890 #endif /* USDT2 */

  2892 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))

  2893   JNIWrapper("ToReflectedField");

  2894 #ifndef USDT2

  2895   DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,

  2896                 env, cls, fieldID, isStatic);

  2897 #else /* USDT2 */

  2898   HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(

  2899                 env, cls, (uintptr_t) fieldID, isStatic);

  2900 #endif /* USDT2 */

  2901   jobject ret = NULL;

  2902   DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);

  2904   fieldDescriptor fd;

  2905   bool found = false;

  2906   Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));

  2908   assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");

  2910   if (isStatic) {

  2911     // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.

  2912     JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);

  2913     assert(id->is_static_field_id(), "invalid static field id");

  2914     found = id->find_local_field(&fd);

  2915   } else {

  2916     // Non-static field. The fieldID is really the offset of the field within the instanceOop.

  2917     int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);

  2918     found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);

  2919   }

  2920   assert(found, "bad fieldID passed into jni_ToReflectedField");

  2921   oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);

  2922   ret = JNIHandles::make_local(env, reflected);

  2923   return ret;

  2924 JNI_END

  2927 //

  2928 // Accessing Static Fields

  2929 //

  2930 #ifndef USDT2

  2931 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);

  2932 #else /* USDT2 */

  2933 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID

  2934                     , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));

  2935 #endif /* USDT2 */

  2937 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,

  2938           const char *name, const char *sig))

  2939   JNIWrapper("GetStaticFieldID");

  2940 #ifndef USDT2

  2941   DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);

  2942 #else /* USDT2 */

  2943   HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(

  2944                                      env, clazz, (char *) name, (char *) sig);

  2945 #endif /* USDT2 */

  2946   jfieldID ret = NULL;

  2947   DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);

  2949   // The class should have been loaded (we have an instance of the class

  2950   // passed in) so the field and signature should already be in the symbol

  2951   // table.  If they're not there, the field doesn't exist.

  2952   TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));

  2953   TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));

  2954   if (fieldname == NULL || signame == NULL) {

  2955     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2956   }

  2957   KlassHandle k(THREAD,

  2958                 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  2959   // Make sure class is initialized before handing id's out to static fields

  2960   k()->initialize(CHECK_NULL);

  2962   fieldDescriptor fd;

  2963   if (!k()->oop_is_instance() ||

  2964       !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {

  2965     THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);

  2966   }

  2968   // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*

  2969   JNIid* id = fd.field_holder()->jni_id_for(fd.offset());

  2970   debug_only(id->set_is_static_field_id();)

  2972   debug_only(id->verify(fd.field_holder()));

  2974   ret = jfieldIDWorkaround::to_static_jfieldID(id);

  2975   return ret;

  2976 JNI_END

  2979 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))

  2980   JNIWrapper("GetStaticObjectField");

  2981 #ifndef USDT2

  2982   DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);

  2983 #else /* USDT2 */

  2984   HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(

  2985                                          env, clazz, (uintptr_t) fieldID);

  2986 #endif /* USDT2 */

  2987 #if INCLUDE_JNI_CHECK

  2988   DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)

  2989 #endif // INCLUDE_JNI_CHECK

  2990   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);

  2991   assert(id->is_static_field_id(), "invalid static field id");

  2992   // Keep JVMTI addition small and only check enabled flag here.

  2993   // jni_GetField_probe() assumes that is okay to create handles.

  2994   if (JvmtiExport::should_post_field_access()) {

  2995     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);

  2996   }

  2997   jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));

  2998 #ifndef USDT2

  2999   DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);

  3000 #else /* USDT2 */

  3001   HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(

  3002                                           ret);

  3003 #endif /* USDT2 */

  3004   return ret;

  3005 JNI_END

  3007 #ifndef USDT2

  3008 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \

  3009 \

  3010   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\

  3011 \

  3012 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \

  3013   JNIWrapper("GetStatic" XSTR(Result) "Field"); \

  3014   DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\

  3015   Return ret = 0;\

  3016   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \

  3017                      (const Return&)ret);\

  3018   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3019   assert(id->is_static_field_id(), "invalid static field id"); \

  3020   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3021   /* jni_GetField_probe() assumes that is okay to create handles. */ \

  3022   if (JvmtiExport::should_post_field_access()) { \

  3023     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \

  3024   } \

  3025   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \

  3026   return ret;\

  3027 JNI_END

  3029 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean)

  3030 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte)

  3031 DEFINE_GETSTATICFIELD(jchar,    char,   Char)

  3032 DEFINE_GETSTATICFIELD(jshort,   short,  Short)

  3033 DEFINE_GETSTATICFIELD(jint,     int,    Int)

  3034 DEFINE_GETSTATICFIELD(jlong,    long,   Long)

  3035 DEFINE_GETSTATICFIELD(jfloat,   float,  Float)

  3036 DEFINE_GETSTATICFIELD(jdouble,  double, Double)

  3038 #else /* USDT2 */

  3040 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \

  3041                               , EntryProbe, ReturnProbe) \

  3042 \

  3043   DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \

  3044                           , ReturnProbe);                                          \

  3045 \

  3046 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \

  3047   JNIWrapper("GetStatic" XSTR(Result) "Field"); \

  3048   EntryProbe; \

  3049   Return ret = 0;\

  3050   DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \

  3051                      (const Return&)ret);\

  3052   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3053   assert(id->is_static_field_id(), "invalid static field id"); \

  3054   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3055   /* jni_GetField_probe() assumes that is okay to create handles. */ \

  3056   if (JvmtiExport::should_post_field_access()) { \

  3057     JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \

  3058   } \

  3059   ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \

  3060   return ret;\

  3061 JNI_END

  3063 DEFINE_GETSTATICFIELD(jboolean, bool,   Boolean

  3064                       , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))

  3065 DEFINE_GETSTATICFIELD(jbyte,    byte,   Byte

  3066                       , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref)   )

  3067 DEFINE_GETSTATICFIELD(jchar,    char,   Char

  3068                       , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref)   )

  3069 DEFINE_GETSTATICFIELD(jshort,   short,  Short

  3070                       , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref)  )

  3071 DEFINE_GETSTATICFIELD(jint,     int,    Int

  3072                       , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),     HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref)    )

  3073 DEFINE_GETSTATICFIELD(jlong,    long,   Long

  3074                       , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),    HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref)   )

  3075 // Float and double probes don't return value because dtrace doesn't currently support it

  3076 DEFINE_GETSTATICFIELD(jfloat,   float,  Float

  3077                       , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),   HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN()          )

  3078 DEFINE_GETSTATICFIELD(jdouble,  double, Double

  3079                       , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),  HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN()         )

  3080 #endif /* USDT2 */

  3082 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))

  3083   JNIWrapper("SetStaticObjectField");

  3084 #ifndef USDT2

  3085   DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);

  3086 #else /* USDT2 */

  3087  HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(

  3088                                         env, clazz, (uintptr_t) fieldID, value);

  3089 #endif /* USDT2 */

  3090   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);

  3091   assert(id->is_static_field_id(), "invalid static field id");

  3092   // Keep JVMTI addition small and only check enabled flag here.

  3093   // jni_SetField_probe() assumes that is okay to create handles.

  3094   if (JvmtiExport::should_post_field_modification()) {

  3095     jvalue field_value;

  3096     field_value.l = value;

  3097     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);

  3098   }

  3099   id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));

  3100 #ifndef USDT2

  3101   DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);

  3102 #else /* USDT2 */

  3103   HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(

  3104                                           );

  3105 #endif /* USDT2 */

  3106 JNI_END

  3109 #ifndef USDT2

  3110 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \

  3111 \

  3112 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \

  3113   JNIWrapper("SetStatic" XSTR(Result) "Field"); \

  3114   FP_SELECT_##Result( \

  3115      DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \

  3116      DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \

  3117 \

  3118   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3119   assert(id->is_static_field_id(), "invalid static field id"); \

  3120   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3121   /* jni_SetField_probe() assumes that is okay to create handles. */ \

  3122   if (JvmtiExport::should_post_field_modification()) { \

  3123     jvalue field_value; \

  3124     field_value.unionType = value; \

  3125     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \

  3126   } \

  3127   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \

  3128   DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\

  3129 JNI_END

  3131 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z)

  3132 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b)

  3133 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c)

  3134 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s)

  3135 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i)

  3136 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j)

  3137 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f)

  3138 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d)

  3140 #else /* USDT2 */

  3142 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \

  3143                               , EntryProbe, ReturnProbe) \

  3144 \

  3145 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \

  3146   JNIWrapper("SetStatic" XSTR(Result) "Field"); \

  3147   EntryProbe; \

  3148 \

  3149   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \

  3150   assert(id->is_static_field_id(), "invalid static field id"); \

  3151   /* Keep JVMTI addition small and only check enabled flag here. */ \

  3152   /* jni_SetField_probe() assumes that is okay to create handles. */ \

  3153   if (JvmtiExport::should_post_field_modification()) { \

  3154     jvalue field_value; \

  3155     field_value.unionType = value; \

  3156     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \

  3157   } \

  3158   if (SigType == 'Z') { value = ((jboolean)value) & 1; } \

  3159   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \

  3160   ReturnProbe;\

  3161 JNI_END

  3163 DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z

  3164                       , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),

  3165                       HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())

  3166 DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b

  3167                       , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3168                       HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())

  3169 DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c

  3170                       , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3171                       HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())

  3172 DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s

  3173                       , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3174                       HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())

  3175 DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i

  3176                       , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3177                       HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())

  3178 DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j

  3179                       , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),

  3180                       HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())

  3181 // Float and double probes don't return value because dtrace doesn't currently support it

  3182 DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f

  3183                       , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),

  3184                       HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())

  3185 DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d

  3186                       , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),

  3187                       HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())

  3188 #endif /* USDT2 */

  3190 //

  3191 // String Operations

  3192 //

  3194 // Unicode Interface

  3196 #ifndef USDT2

  3197 DT_RETURN_MARK_DECL(NewString, jstring);

  3198 #else /* USDT2 */

  3199 DT_RETURN_MARK_DECL(NewString, jstring

  3200                     , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));

  3201 #endif /* USDT2 */

  3203 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))

  3204   JNIWrapper("NewString");

  3205 #ifndef USDT2

  3206   DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);

  3207 #else /* USDT2 */

  3208  HOTSPOT_JNI_NEWSTRING_ENTRY(

  3209                              env, (uint16_t *) unicodeChars, len);

  3210 #endif /* USDT2 */

  3211   jstring ret = NULL;

  3212   DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);

  3213   oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);

  3214   ret = (jstring) JNIHandles::make_local(env, string);

  3215   return ret;

  3216 JNI_END

  3219 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))

  3220   JNIWrapper("GetStringLength");

  3221 #ifndef USDT2

  3222   DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);

  3223 #else /* USDT2 */

  3224   HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(

  3225                                     env, string);

  3226 #endif /* USDT2 */

  3227   jsize ret = 0;

  3228   oop s = JNIHandles::resolve_non_null(string);

  3229   if (java_lang_String::value(s) != NULL) {

  3230     ret = java_lang_String::length(s);

  3231   }

  3232 #ifndef USDT2

  3233   DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);

  3234 #else /* USDT2 */

  3235  HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(

  3236                                     ret);

  3237 #endif /* USDT2 */

  3238   return ret;

  3239 JNI_END

  3242 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(

  3243   JNIEnv *env, jstring string, jboolean *isCopy))

  3244   JNIWrapper("GetStringChars");

  3245 #ifndef USDT2

  3246   DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);

  3247 #else /* USDT2 */

  3248  HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(

  3249                                   env, string, (uintptr_t *) isCopy);

  3250 #endif /* USDT2 */

  3251   jchar* buf = NULL;

  3252   oop s = JNIHandles::resolve_non_null(string);

  3253   typeArrayOop s_value = java_lang_String::value(s);

  3254   if (s_value != NULL) {

  3255     int s_len = java_lang_String::length(s);

  3256     int s_offset = java_lang_String::offset(s);

  3257     buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal);  // add one for zero termination

  3258     /* JNI Specification states return NULL on OOM */

  3259     if (buf != NULL) {

  3260       if (s_len > 0) {

  3261         memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);

  3262       }

  3263       buf[s_len] = 0;

  3264       //%note jni_5

  3265       if (isCopy != NULL) {

  3266         *isCopy = JNI_TRUE;

  3267       }

  3268     }

  3269   }

  3270 #ifndef USDT2

  3271   DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);

  3272 #else /* USDT2 */

  3273   HOTSPOT_JNI_GETSTRINGCHARS_RETURN(

  3274                                     buf);

  3275 #endif /* USDT2 */

  3276   return buf;

  3277 JNI_END

  3280 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))

  3281   JNIWrapper("ReleaseStringChars");

  3282 #ifndef USDT2

  3283   DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);

  3284 #else /* USDT2 */

  3285   HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(

  3286                                        env, str, (uint16_t *) chars);

  3287 #endif /* USDT2 */

  3288   //%note jni_6

  3289   if (chars != NULL) {

  3290     // Since String objects are supposed to be immutable, don't copy any

  3291     // new data back.  A bad user will have to go after the char array.

  3292     FreeHeap((void*) chars);

  3293   }

  3294 #ifndef USDT2

  3295   DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);

  3296 #else /* USDT2 */

  3297   HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(

  3298 );

  3299 #endif /* USDT2 */

  3300 JNI_END

  3303 // UTF Interface

  3305 #ifndef USDT2

  3306 DT_RETURN_MARK_DECL(NewStringUTF, jstring);

  3307 #else /* USDT2 */

  3308 DT_RETURN_MARK_DECL(NewStringUTF, jstring

  3309                     , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));

  3310 #endif /* USDT2 */

  3312 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))

  3313   JNIWrapper("NewStringUTF");

  3314 #ifndef USDT2

  3315   DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);

  3316 #else /* USDT2 */

  3317   HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(

  3318                                  env, (char *) bytes);

  3319 #endif /* USDT2 */

  3320   jstring ret;

  3321   DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);

  3323   oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);

  3324   ret = (jstring) JNIHandles::make_local(env, result);

  3325   return ret;

  3326 JNI_END

  3329 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))

  3330   JNIWrapper("GetStringUTFLength");

  3331 #ifndef USDT2

  3332   DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);

  3333 #else /* USDT2 */

  3334  HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(

  3335                                       env, string);

  3336 #endif /* USDT2 */

  3337   jsize ret = 0;

  3338   oop java_string = JNIHandles::resolve_non_null(string);

  3339   if (java_lang_String::value(java_string) != NULL) {

  3340     ret = java_lang_String::utf8_length(java_string);

  3341   }

  3342 #ifndef USDT2

  3343   DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);

  3344 #else /* USDT2 */

  3345   HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(

  3346                                         ret);

  3347 #endif /* USDT2 */

  3348   return ret;

  3349 JNI_END

  3352 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))

  3353   JNIWrapper("GetStringUTFChars");

  3354 #ifndef USDT2

  3355   DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);

  3356 #else /* USDT2 */

  3357  HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(

  3358                                      env, string, (uintptr_t *) isCopy);

  3359 #endif /* USDT2 */

  3360   char* result = NULL;

  3361   oop java_string = JNIHandles::resolve_non_null(string);

  3362   if (java_lang_String::value(java_string) != NULL) {

  3363     size_t length = java_lang_String::utf8_length(java_string);

  3364     /* JNI Specification states return NULL on OOM */

  3365     result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);

  3366     if (result != NULL) {

  3367       java_lang_String::as_utf8_string(java_string, result, (int) length + 1);

  3368       if (isCopy != NULL) {

  3369         *isCopy = JNI_TRUE;

  3370       }

  3371     }

  3372   }

  3373 #ifndef USDT2

  3374   DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);

  3375 #else /* USDT2 */

  3376  HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(

  3377                                       result);

  3378 #endif /* USDT2 */

  3379   return result;

  3380 JNI_END

  3383 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))

  3384   JNIWrapper("ReleaseStringUTFChars");

  3385 #ifndef USDT2

  3386   DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);

  3387 #else /* USDT2 */

  3388  HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(

  3389                                          env, str, (char *) chars);

  3390 #endif /* USDT2 */

  3391   if (chars != NULL) {

  3392     FreeHeap((char*) chars);

  3393   }

  3394 #ifndef USDT2

  3395   DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);

  3396 #else /* USDT2 */

  3397 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(

  3398 );

  3399 #endif /* USDT2 */

  3400 JNI_END

  3403 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))

  3404   JNIWrapper("GetArrayLength");

  3405 #ifndef USDT2

  3406   DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);

  3407 #else /* USDT2 */

  3408  HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(

  3409                                   env, array);

  3410 #endif /* USDT2 */

  3411   arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));

  3412   assert(a->is_array(), "must be array");

  3413   jsize ret = a->length();

  3414 #ifndef USDT2

  3415   DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);

  3416 #else /* USDT2 */

  3417  HOTSPOT_JNI_GETARRAYLENGTH_RETURN(

  3418                                    ret);

  3419 #endif /* USDT2 */

  3420   return ret;

  3421 JNI_END

  3424 //

  3425 // Object Array Operations

  3426 //

  3428 #ifndef USDT2

  3429 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);

  3430 #else /* USDT2 */

  3431 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray

  3432                     , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));

  3433 #endif /* USDT2 */

  3435 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))

  3436   JNIWrapper("NewObjectArray");

  3437 #ifndef USDT2

  3438   DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);

  3439 #else /* USDT2 */

  3440  HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(

  3441                                   env, length, elementClass, initialElement);

  3442 #endif /* USDT2 */

  3443   jobjectArray ret = NULL;

  3444   DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);

  3445   KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));

  3446   Klass* ako = ek()->array_klass(CHECK_NULL);

  3447   KlassHandle ak = KlassHandle(THREAD, ako);

  3448   ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);

  3449   objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);

  3450   oop initial_value = JNIHandles::resolve(initialElement);

  3451   if (initial_value != NULL) {  // array already initialized with NULL

  3452     for (int index = 0; index < length; index++) {

  3453       result->obj_at_put(index, initial_value);

  3454     }

  3455   }

  3456   ret = (jobjectArray) JNIHandles::make_local(env, result);

  3457   return ret;

  3458 JNI_END

  3460 #ifndef USDT2

  3461 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);

  3462 #else /* USDT2 */

  3463 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject

  3464                     , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));

  3465 #endif /* USDT2 */

  3467 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))

  3468   JNIWrapper("GetObjectArrayElement");

  3469 #ifndef USDT2

  3470   DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);

  3471 #else /* USDT2 */

  3472  HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(

  3473                                          env, array, index);

  3474 #endif /* USDT2 */

  3475   jobject ret = NULL;

  3476   DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);

  3477   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));

  3478   if (a->is_within_bounds(index)) {

  3479     ret = JNIHandles::make_local(env, a->obj_at(index));

  3480     return ret;

  3481   } else {

  3482     char buf[jintAsStringSize];

  3483     sprintf(buf, "%d", index);

  3484     THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);

  3485   }

  3486 JNI_END

  3488 #ifndef USDT2

  3489 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);

  3490 #else /* USDT2 */

  3491 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement

  3492                          , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());

  3493 #endif /* USDT2 */

  3495 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))

  3496   JNIWrapper("SetObjectArrayElement");

  3497 #ifndef USDT2

  3498   DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);

  3499 #else /* USDT2 */

  3500  HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(

  3501                                          env, array, index, value);

  3502 #endif /* USDT2 */

  3503   DT_VOID_RETURN_MARK(SetObjectArrayElement);

  3505   objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));

  3506   oop v = JNIHandles::resolve(value);

  3507   if (a->is_within_bounds(index)) {

  3508     if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {

  3509       a->obj_at_put(index, v);

  3510     } else {

  3511       THROW(vmSymbols::java_lang_ArrayStoreException());

  3512     }

  3513   } else {

  3514     char buf[jintAsStringSize];

  3515     sprintf(buf, "%d", index);

  3516     THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);

  3517   }

  3518 JNI_END

  3521 #ifndef USDT2

  3522 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \

  3523 \

  3524   DT_RETURN_MARK_DECL(New##Result##Array, Return); \

  3525 \

  3526 JNI_ENTRY(Return, \

  3527           jni_New##Result##Array(JNIEnv *env, jsize len)) \

  3528   JNIWrapper("New" XSTR(Result) "Array"); \

  3529   DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\

  3530   Return ret = NULL;\

  3531   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\

  3532 \

  3533   oop obj= oopFactory::Allocator(len, CHECK_0); \

  3534   ret = (Return) JNIHandles::make_local(env, obj); \

  3535   return ret;\

  3536 JNI_END

  3538 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean)

  3539 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte)

  3540 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short)

  3541 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char)

  3542 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int)

  3543 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long)

  3544 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float)

  3545 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double)

  3547 #else /* USDT2 */

  3549 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \

  3550                               ,EntryProbe,ReturnProbe)  \

  3551 \

  3552   DT_RETURN_MARK_DECL(New##Result##Array, Return \

  3553                       , ReturnProbe); \

  3554 \

  3555 JNI_ENTRY(Return, \

  3556           jni_New##Result##Array(JNIEnv *env, jsize len)) \

  3557   JNIWrapper("New" XSTR(Result) "Array"); \

  3558   EntryProbe; \

  3559   Return ret = NULL;\

  3560   DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\

  3561 \

  3562   oop obj= oopFactory::Allocator(len, CHECK_0); \

  3563   ret = (Return) JNIHandles::make_local(env, obj); \

  3564   return ret;\

  3565 JNI_END

  3567 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray,   Boolean,

  3568                       HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),

  3569                       HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))

  3570 DEFINE_NEWSCALARARRAY(jbyteArray,    new_byteArray,   Byte,

  3571                       HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),

  3572                       HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))

  3573 DEFINE_NEWSCALARARRAY(jshortArray,   new_shortArray,  Short,

  3574                       HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),

  3575                       HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))

  3576 DEFINE_NEWSCALARARRAY(jcharArray,    new_charArray,   Char,

  3577                       HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),

  3578                       HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))

  3579 DEFINE_NEWSCALARARRAY(jintArray,     new_intArray,    Int,

  3580                       HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),

  3581                       HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))

  3582 DEFINE_NEWSCALARARRAY(jlongArray,    new_longArray,   Long,

  3583                       HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),

  3584                       HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))

  3585 DEFINE_NEWSCALARARRAY(jfloatArray,   new_singleArray, Float,

  3586                       HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),

  3587                       HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))

  3588 DEFINE_NEWSCALARARRAY(jdoubleArray,  new_doubleArray, Double,

  3589                       HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),

  3590                       HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))

  3591 #endif /* USDT2 */

  3593 // Return an address which will fault if the caller writes to it.

  3595 static char* get_bad_address() {

  3596   static char* bad_address = NULL;

  3597   if (bad_address == NULL) {

  3598     size_t size = os::vm_allocation_granularity();

  3599     bad_address = os::reserve_memory(size);

  3600     if (bad_address != NULL) {

  3601       os::protect_memory(bad_address, size, os::MEM_PROT_READ,

  3602                          /*is_committed*/false);

  3603       MemTracker::record_virtual_memory_type((void*)bad_address, mtInternal);

  3604     }

  3605   }

  3606   return bad_address;

  3607 }

  3610 #ifndef USDT2

  3611 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \

  3612 \

  3613 JNI_QUICK_ENTRY(ElementType*, \

  3614           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \

  3615   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \

  3616   DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\

  3617   /* allocate an chunk of memory in c land */ \

  3618   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3619   ElementType* result; \

  3620   int len = a->length(); \

  3621   if (len == 0) { \

  3622     /* Empty array: legal but useless, can't return NULL. \

  3623      * Return a pointer to something useless. \

  3624      * Avoid asserts in typeArrayOop. */ \

  3625     result = (ElementType*)get_bad_address(); \

  3626   } else { \

  3627     /* JNI Specification states return NULL on OOM */                    \

  3628     result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \

  3629     if (result != NULL) {                                                \

  3630       /* copy the array to the c chunk */                                \

  3631       memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len);      \

  3632       if (isCopy) {                                                      \

  3633         *isCopy = JNI_TRUE;                                              \

  3634       }                                                                  \

  3635     }                                                                    \

  3636   } \

  3637   DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\

  3638   return result; \

  3639 JNI_END

  3641 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)

  3642 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte)

  3643 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short)

  3644 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char)

  3645 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int)

  3646 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long)

  3647 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float)

  3648 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double)

  3650 #else /* USDT2 */

  3652 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \

  3653                                       , EntryProbe, ReturnProbe) \

  3654 \

  3655 JNI_QUICK_ENTRY(ElementType*, \

  3656           jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \

  3657   JNIWrapper("Get" XSTR(Result) "ArrayElements"); \

  3658   EntryProbe; \

  3659   /* allocate an chunk of memory in c land */ \

  3660   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3661   ElementType* result; \

  3662   int len = a->length(); \

  3663   if (len == 0) { \

  3664     /* Empty array: legal but useless, can't return NULL. \

  3665      * Return a pointer to something useless. \

  3666      * Avoid asserts in typeArrayOop. */ \

  3667     result = (ElementType*)get_bad_address(); \

  3668   } else { \

  3669     /* JNI Specification states return NULL on OOM */                    \

  3670     result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \

  3671     if (result != NULL) {                                                \

  3672       /* copy the array to the c chunk */                                \

  3673       memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len);      \

  3674       if (isCopy) {                                                      \

  3675         *isCopy = JNI_TRUE;                                              \

  3676       }                                                                  \

  3677     }                                                                    \

  3678   } \

  3679   ReturnProbe; \

  3680   return result; \

  3681 JNI_END

  3683 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool

  3684                               , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3685                               HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))

  3686 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte

  3687                               , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3688                               HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))

  3689 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short

  3690                               , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),

  3691                               HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))

  3692 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char

  3693                               , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),

  3694                               HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))

  3695 DEFINE_GETSCALARARRAYELEMENTS(T_INT,     jint,     Int,     int

  3696                               , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3697                               HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))

  3698 DEFINE_GETSCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long

  3699                               , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3700                               HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))

  3701 // Float and double probes don't return value because dtrace doesn't currently support it

  3702 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float

  3703                               , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3704                               HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))

  3705 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double

  3706                               , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),

  3707                               HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))

  3708 #endif /* USDT2 */

  3710 #ifndef USDT2

  3711 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \

  3712 \

  3713 JNI_QUICK_ENTRY(void, \

  3714           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \

  3715                                              ElementType *buf, jint mode)) \

  3716   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \

  3717   DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\

  3718   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3719   int len = a->length(); \

  3720   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \

  3721     if ((mode == 0) || (mode == JNI_COMMIT)) { \

  3722       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \

  3723     } \

  3724     if ((mode == 0) || (mode == JNI_ABORT)) { \

  3725       FreeHeap(buf); \

  3726     } \

  3727   } \

  3728   DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\

  3729 JNI_END

  3731 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)

  3732 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte)

  3733 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short)

  3734 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char)

  3735 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int)

  3736 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long)

  3737 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float)

  3738 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double)

  3740 #else /* USDT2 */

  3742 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \

  3743                                           , EntryProbe, ReturnProbe);\

  3744 \

  3745 JNI_QUICK_ENTRY(void, \

  3746           jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \

  3747                                              ElementType *buf, jint mode)) \

  3748   JNIWrapper("Release" XSTR(Result) "ArrayElements"); \

  3749   EntryProbe; \

  3750   typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3751   int len = a->length(); \

  3752   if (len != 0) {   /* Empty array:  nothing to free or copy. */  \

  3753     if ((mode == 0) || (mode == JNI_COMMIT)) { \

  3754       memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \

  3755     } \

  3756     if ((mode == 0) || (mode == JNI_ABORT)) { \

  3757       FreeHeap(buf); \

  3758     } \

  3759   } \

  3760   ReturnProbe; \

  3761 JNI_END

  3763 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool

  3764                                   , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),

  3765                                   HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())

  3766 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE,    jbyte,    Byte,    byte

  3767                                   , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),

  3768                                   HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())

  3769 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT,   jshort,   Short,   short

  3770                                   ,  HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),

  3771                                   HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())

  3772 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR,    jchar,    Char,    char

  3773                                   ,  HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),

  3774                                   HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())

  3775 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT,     jint,     Int,     int

  3776                                   , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),

  3777                                   HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())

  3778 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG,    jlong,    Long,    long

  3779                                   , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),

  3780                                   HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())

  3781 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT,   jfloat,   Float,   float

  3782                                   , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),

  3783                                   HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())

  3784 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE,  jdouble,  Double,  double

  3785                                   , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),

  3786                                   HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())

  3787 #endif /* USDT2 */

  3789 #ifndef USDT2

  3790 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \

  3791   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\

  3792 \

  3793 JNI_ENTRY(void, \

  3794 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3795              jsize len, ElementType *buf)) \

  3796   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \

  3797   DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\

  3798   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \

  3799   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3800   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \

  3801     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3802   } else { \

  3803     if (len > 0) { \

  3804       int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \

  3805       memcpy((u_char*) buf, \

  3806              (u_char*) src->Tag##_at_addr(start), \

  3807              len << sc);                          \

  3808     } \

  3809   } \

  3810 JNI_END

  3812 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)

  3813 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte)

  3814 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short)

  3815 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char)

  3816 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int)

  3817 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long)

  3818 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float)

  3819 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double)

  3821 #else /* USDT2 */

  3823 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \

  3824                                     , EntryProbe, ReturnProbe); \

  3825   DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \

  3826                            , ReturnProbe); \

  3827 \

  3828 JNI_ENTRY(void, \

  3829 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3830              jsize len, ElementType *buf)) \

  3831   JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \

  3832   EntryProbe; \

  3833   DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \

  3834   typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3835   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \

  3836     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3837   } else { \

  3838     if (len > 0) { \

  3839       int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \

  3840       memcpy((u_char*) buf, \

  3841              (u_char*) src->Tag##_at_addr(start), \

  3842              len << sc);                          \

  3843     } \

  3844   } \

  3845 JNI_END

  3847 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool

  3848                             , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),

  3849                             HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());

  3850 DEFINE_GETSCALARARRAYREGION(T_BYTE,    jbyte,   Byte,    byte

  3851                             ,  HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),

  3852                             HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());

  3853 DEFINE_GETSCALARARRAYREGION(T_SHORT,   jshort,  Short,   short

  3854                             , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),

  3855                             HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());

  3856 DEFINE_GETSCALARARRAYREGION(T_CHAR,    jchar,   Char,    char

  3857                             ,  HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),

  3858                             HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());

  3859 DEFINE_GETSCALARARRAYREGION(T_INT,     jint,    Int,     int

  3860                             , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),

  3861                             HOTSPOT_JNI_GETINTARRAYREGION_RETURN());

  3862 DEFINE_GETSCALARARRAYREGION(T_LONG,    jlong,   Long,    long

  3863                             ,  HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),

  3864                             HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());

  3865 DEFINE_GETSCALARARRAYREGION(T_FLOAT,   jfloat,  Float,   float

  3866                             , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),

  3867                             HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());

  3868 DEFINE_GETSCALARARRAYREGION(T_DOUBLE,  jdouble, Double,  double

  3869                             , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),

  3870                             HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());

  3871 #endif /* USDT2 */

  3873 #ifndef USDT2

  3874 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \

  3875   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\

  3876 \

  3877 JNI_ENTRY(void, \

  3878 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3879              jsize len, const ElementType *buf)) \

  3880   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \

  3881   DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\

  3882   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \

  3883   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3884   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \

  3885     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3886   } else { \

  3887     if (len > 0) { \

  3888       int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \

  3889       memcpy((u_char*) dst->Tag##_at_addr(start), \

  3890              (u_char*) buf, \

  3891              len << sc);    \

  3892     } \

  3893   } \

  3894 JNI_END

  3896 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)

  3897 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte)

  3898 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short)

  3899 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char)

  3900 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int)

  3901 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long)

  3902 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float)

  3903 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double)

  3905 #else /* USDT2 */

  3907 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \

  3908                                     , EntryProbe, ReturnProbe); \

  3909   DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \

  3910                            ,ReturnProbe);           \

  3911 \

  3912 JNI_ENTRY(void, \

  3913 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \

  3914              jsize len, const ElementType *buf)) \

  3915   JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \

  3916   EntryProbe; \

  3917   DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \

  3918   typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \

  3919   if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \

  3920     THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \

  3921   } else { \

  3922     if (len > 0) { \

  3923       int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \

  3924       memcpy((u_char*) dst->Tag##_at_addr(start), \

  3925              (u_char*) buf, \

  3926              len << sc);    \

  3927     } \

  3928   } \

  3929 JNI_END

  3931 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool

  3932                             , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),

  3933                             HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())

  3934 DEFINE_SETSCALARARRAYREGION(T_BYTE,    jbyte,    Byte,    byte

  3935                             , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),

  3936                             HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())

  3937 DEFINE_SETSCALARARRAYREGION(T_SHORT,   jshort,   Short,   short

  3938                             , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),

  3939                             HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())

  3940 DEFINE_SETSCALARARRAYREGION(T_CHAR,    jchar,    Char,    char

  3941                             , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),

  3942                             HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())

  3943 DEFINE_SETSCALARARRAYREGION(T_INT,     jint,     Int,     int

  3944                             , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),

  3945                             HOTSPOT_JNI_SETINTARRAYREGION_RETURN())

  3946 DEFINE_SETSCALARARRAYREGION(T_LONG,    jlong,    Long,    long

  3947                             , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),

  3948                             HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())

  3949 DEFINE_SETSCALARARRAYREGION(T_FLOAT,   jfloat,   Float,   float

  3950                             , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),

  3951                             HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())

  3952 DEFINE_SETSCALARARRAYREGION(T_DOUBLE,  jdouble,  Double,  double

  3953                             , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),

  3954                             HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())

  3955 #endif /* USDT2 */

  3958 //

  3959 // Interception of natives

  3960 //

  3962 // The RegisterNatives call being attempted tried to register with a method that

  3963 // is not native.  Ask JVM TI what prefixes have been specified.  Then check

  3964 // to see if the native method is now wrapped with the prefixes.  See the

  3965 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.

  3966 static Method* find_prefixed_native(KlassHandle k,

  3967                                       Symbol* name, Symbol* signature, TRAPS) {

  3968 #if INCLUDE_JVMTI

  3969   ResourceMark rm(THREAD);

  3970   Method* method;

  3971   int name_len = name->utf8_length();

  3972   char* name_str = name->as_utf8();

  3973   int prefix_count;

  3974   char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);

  3975   for (int i = 0; i < prefix_count; i++) {

  3976     char* prefix = prefixes[i];

  3977     int prefix_len = (int)strlen(prefix);

  3979     // try adding this prefix to the method name and see if it matches another method name

  3980     int trial_len = name_len + prefix_len;

  3981     char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);

  3982     strcpy(trial_name_str, prefix);

  3983     strcat(trial_name_str, name_str);

  3984     TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);

  3985     if (trial_name == NULL) {

  3986       continue; // no such symbol, so this prefix wasn't used, try the next prefix

  3987     }

  3988     method = k()->lookup_method(trial_name, signature);

  3989     if (method == NULL) {

  3990       continue; // signature doesn't match, try the next prefix

  3991     }

  3992     if (method->is_native()) {

  3993       method->set_is_prefixed_native();

  3994       return method; // wahoo, we found a prefixed version of the method, return it

  3995     }

  3996     // found as non-native, so prefix is good, add it, probably just need more prefixes

  3997     name_len = trial_len;

  3998     name_str = trial_name_str;

  3999   }

  4000 #endif // INCLUDE_JVMTI

  4001   return NULL; // not found

  4002 }

  4004 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {

  4005   Method* method = k()->lookup_method(name, signature);

  4006   if (method == NULL) {

  4007     ResourceMark rm;

  4008     stringStream st;

  4009     st.print("Method %s name or signature does not match",

  4010              Method::name_and_sig_as_C_string(k(), name, signature));

  4011     THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);

  4012   }

  4013   if (!method->is_native()) {

  4014     // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)

  4015     method = find_prefixed_native(k, name, signature, THREAD);

  4016     if (method == NULL) {

  4017       ResourceMark rm;

  4018       stringStream st;

  4019       st.print("Method %s is not declared as native",

  4020                Method::name_and_sig_as_C_string(k(), name, signature));

  4021       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);

  4022     }

  4023   }

  4025   if (entry != NULL) {

  4026     method->set_native_function(entry,

  4027       Method::native_bind_event_is_interesting);

  4028   } else {

  4029     method->clear_native_function();

  4030   }

  4031   if (PrintJNIResolving) {

  4032     ResourceMark rm(THREAD);

  4033     tty->print_cr("[Registering JNI native method %s.%s]",

  4034       method->method_holder()->external_name(),

  4035       method->name()->as_C_string());

  4036   }

  4037   return true;

  4038 }

  4040 #ifndef USDT2

  4041 DT_RETURN_MARK_DECL(RegisterNatives, jint);

  4042 #else /* USDT2 */

  4043 DT_RETURN_MARK_DECL(RegisterNatives, jint

  4044                     , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));

  4045 #endif /* USDT2 */

  4047 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,

  4048                                     const JNINativeMethod *methods,

  4049                                     jint nMethods))

  4050   JNIWrapper("RegisterNatives");

  4051 #ifndef USDT2

  4052   DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);

  4053 #else /* USDT2 */

  4054   HOTSPOT_JNI_REGISTERNATIVES_ENTRY(

  4055                                     env, clazz, (void *) methods, nMethods);

  4056 #endif /* USDT2 */

  4057   jint ret = 0;

  4058   DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);

  4060   KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));

  4062   for (int index = 0; index < nMethods; index++) {

  4063     const char* meth_name = methods[index].name;

  4064     const char* meth_sig = methods[index].signature;

  4065     int meth_name_len = (int)strlen(meth_name);

  4067     // The class should have been loaded (we have an instance of the class

  4068     // passed in) so the method and signature should already be in the symbol

  4069     // table.  If they're not there, the method doesn't exist.

  4070     TempNewSymbol  name = SymbolTable::probe(meth_name, meth_name_len);

  4071     TempNewSymbol  signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));

  4073     if (name == NULL || signature == NULL) {

  4074       ResourceMark rm;

  4075       stringStream st;

  4076       st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);

  4077       // Must return negative value on failure

  4078       THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);

  4079     }

  4081     bool res = register_native(h_k, name, signature,

  4082                                (address) methods[index].fnPtr, THREAD);

  4083     if (!res) {

  4084       ret = -1;

  4085       break;

  4086     }

  4087   }

  4088   return ret;

  4089 JNI_END

  4092 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))

  4093   JNIWrapper("UnregisterNatives");

  4094 #ifndef USDT2

  4095   DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);

  4096 #else /* USDT2 */

  4097  HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(

  4098                                      env, clazz);

  4099 #endif /* USDT2 */

  4100   Klass* k   = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));

  4101   //%note jni_2

  4102   if (k->oop_is_instance()) {

  4103     for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {

  4104       Method* m = InstanceKlass::cast(k)->methods()->at(index);

  4105       if (m->is_native()) {

  4106         m->clear_native_function();

  4107         m->set_signature_handler(NULL);

  4108       }

  4109     }

  4110   }

  4111 #ifndef USDT2

  4112   DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);

  4113 #else /* USDT2 */

  4114  HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(

  4115                                       0);

  4116 #endif /* USDT2 */

  4117   return 0;

  4118 JNI_END

  4120 //

  4121 // Monitor functions

  4122 //

  4124 #ifndef USDT2

  4125 DT_RETURN_MARK_DECL(MonitorEnter, jint);

  4126 #else /* USDT2 */

  4127 DT_RETURN_MARK_DECL(MonitorEnter, jint

  4128                     , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));

  4129 #endif /* USDT2 */

  4131 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))

  4132 #ifndef USDT2

  4133   DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);

  4134 #else /* USDT2 */

  4135  HOTSPOT_JNI_MONITORENTER_ENTRY(

  4136                                 env, jobj);

  4137 #endif /* USDT2 */

  4138   jint ret = JNI_ERR;

  4139   DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);

  4141   // If the object is null, we can't do anything with it

  4142   if (jobj == NULL) {

  4143     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);

  4144   }

  4146   Handle obj(thread, JNIHandles::resolve_non_null(jobj));

  4147   ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));

  4148   ret = JNI_OK;

  4149   return ret;

  4150 JNI_END

  4152 #ifndef USDT2

  4153 DT_RETURN_MARK_DECL(MonitorExit, jint);

  4154 #else /* USDT2 */

  4155 DT_RETURN_MARK_DECL(MonitorExit, jint

  4156                     , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));

  4157 #endif /* USDT2 */

  4159 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))

  4160 #ifndef USDT2

  4161   DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);

  4162 #else /* USDT2 */

  4163  HOTSPOT_JNI_MONITOREXIT_ENTRY(

  4164                                env, jobj);

  4165 #endif /* USDT2 */

  4166   jint ret = JNI_ERR;

  4167   DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);

  4169   // Don't do anything with a null object

  4170   if (jobj == NULL) {

  4171     THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);

  4172   }

  4174   Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));

  4175   ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));

  4177   ret = JNI_OK;

  4178   return ret;

  4179 JNI_END

  4181 //

  4182 // Extensions

  4183 //

  4185 #ifndef USDT2

  4186 DT_VOID_RETURN_MARK_DECL(GetStringRegion);

  4187 #else /* USDT2 */

  4188 DT_VOID_RETURN_MARK_DECL(GetStringRegion

  4189                          , HOTSPOT_JNI_GETSTRINGREGION_RETURN());

  4190 #endif /* USDT2 */

  4192 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))

  4193   JNIWrapper("GetStringRegion");

  4194 #ifndef USDT2

  4195   DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);

  4196 #else /* USDT2 */

  4197  HOTSPOT_JNI_GETSTRINGREGION_ENTRY(

  4198                                    env, string, start, len, buf);

  4199 #endif /* USDT2 */

  4200   DT_VOID_RETURN_MARK(GetStringRegion);

  4201   oop s = JNIHandles::resolve_non_null(string);

  4202   int s_len = java_lang_String::length(s);

  4203   if (start < 0 || len < 0 || start + len > s_len) {

  4204     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());

  4205   } else {

  4206     if (len > 0) {

  4207       int s_offset = java_lang_String::offset(s);

  4208       typeArrayOop s_value = java_lang_String::value(s);

  4209       memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);

  4210     }

  4211   }

  4212 JNI_END

  4214 #ifndef USDT2

  4215 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);

  4216 #else /* USDT2 */

  4217 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion

  4218                          , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());

  4219 #endif /* USDT2 */

  4221 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))

  4222   JNIWrapper("GetStringUTFRegion");

  4223 #ifndef USDT2

  4224   DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);

  4225 #else /* USDT2 */

  4226  HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(

  4227                                       env, string, start, len, buf);

  4228 #endif /* USDT2 */

  4229   DT_VOID_RETURN_MARK(GetStringUTFRegion);

  4230   oop s = JNIHandles::resolve_non_null(string);

  4231   int s_len = java_lang_String::length(s);

  4232   if (start < 0 || len < 0 || start + len > s_len) {

  4233     THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());

  4234   } else {

  4235     //%note jni_7

  4236     if (len > 0) {

  4237       ResourceMark rm(THREAD);

  4238       char *utf_region = java_lang_String::as_utf8_string(s, start, len);

  4239       int utf_len = (int)strlen(utf_region);

  4240       memcpy(buf, utf_region, utf_len);

  4241       buf[utf_len] = 0;

  4242     } else {

  4243       // JDK null-terminates the buffer even in len is zero

  4244       if (buf != NULL) {

  4245         buf[0] = 0;

  4246       }

  4247     }

  4248   }

  4249 JNI_END

  4252 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))

  4253   JNIWrapper("GetPrimitiveArrayCritical");

  4254 #ifndef USDT2

  4255   DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);

  4256 #else /* USDT2 */

  4257  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(

  4258                                              env, array, (uintptr_t *) isCopy);

  4259 #endif /* USDT2 */

  4260   GC_locker::lock_critical(thread);

  4261   if (isCopy != NULL) {

  4262     *isCopy = JNI_FALSE;

  4263   }

  4264   oop a = JNIHandles::resolve_non_null(array);

  4265   assert(a->is_array(), "just checking");

  4266   BasicType type;

  4267   if (a->is_objArray()) {

  4268     type = T_OBJECT;

  4269   } else {

  4270     type = TypeArrayKlass::cast(a->klass())->element_type();

  4271   }

  4272   void* ret = arrayOop(a)->base(type);

  4273 #ifndef USDT2

  4274   DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);

  4275 #else /* USDT2 */

  4276  HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(

  4277                                               ret);

  4278 #endif /* USDT2 */

  4279   return ret;

  4280 JNI_END

  4283 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))

  4284   JNIWrapper("ReleasePrimitiveArrayCritical");

  4285 #ifndef USDT2

  4286   DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);

  4287 #else /* USDT2 */

  4288   HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(

  4289                                                   env, array, carray, mode);

  4290 #endif /* USDT2 */

  4291   // The array, carray and mode arguments are ignored

  4292   GC_locker::unlock_critical(thread);

  4293 #ifndef USDT2

  4294   DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);

  4295 #else /* USDT2 */

  4296 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(

  4297 );

  4298 #endif /* USDT2 */

  4299 JNI_END

  4302 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))

  4303   JNIWrapper("GetStringCritical");

  4304 #ifndef USDT2

  4305   DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);

  4306 #else /* USDT2 */

  4307   HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(

  4308                                       env, string, (uintptr_t *) isCopy);

  4309 #endif /* USDT2 */

  4310   GC_locker::lock_critical(thread);

  4311   if (isCopy != NULL) {

  4312     *isCopy = JNI_FALSE;

  4313   }

  4314   oop s = JNIHandles::resolve_non_null(string);

  4315   int s_len = java_lang_String::length(s);

  4316   typeArrayOop s_value = java_lang_String::value(s);

  4317   int s_offset = java_lang_String::offset(s);

  4318   const jchar* ret;

  4319   if (s_len > 0) {

  4320     ret = s_value->char_at_addr(s_offset);

  4321   } else {

  4322     ret = (jchar*) s_value->base(T_CHAR);

  4323   }

  4324 #ifndef USDT2

  4325   DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);

  4326 #else /* USDT2 */

  4327  HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(

  4328                                       (uint16_t *) ret);

  4329 #endif /* USDT2 */

  4330   return ret;

  4331 JNI_END

  4334 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))

  4335   JNIWrapper("ReleaseStringCritical");

  4336 #ifndef USDT2

  4337   DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);

  4338 #else /* USDT2 */

  4339   HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(

  4340                                           env, str, (uint16_t *) chars);

  4341 #endif /* USDT2 */

  4342   // The str and chars arguments are ignored

  4343   GC_locker::unlock_critical(thread);

  4344 #ifndef USDT2

  4345   DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);

  4346 #else /* USDT2 */

  4347 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(

  4348 );

  4349 #endif /* USDT2 */

  4350 JNI_END

  4353 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))

  4354   JNIWrapper("jni_NewWeakGlobalRef");

  4355 #ifndef USDT2

  4356   DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);

  4357 #else /* USDT2 */

  4358  HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(

  4359                                     env, ref);

  4360 #endif /* USDT2 */

  4361   Handle ref_handle(thread, JNIHandles::resolve(ref));

  4362   jweak ret = JNIHandles::make_weak_global(ref_handle);

  4363 #ifndef USDT2

  4364   DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);

  4365 #else /* USDT2 */

  4366  HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(

  4367                                      ret);

  4368 #endif /* USDT2 */

  4369   return ret;

  4370 JNI_END

  4372 // Must be JNI_ENTRY (with HandleMark)

  4373 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))

  4374   JNIWrapper("jni_DeleteWeakGlobalRef");

  4375 #ifndef USDT2

  4376   DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);

  4377 #else /* USDT2 */

  4378   HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(

  4379                                         env, ref);

  4380 #endif /* USDT2 */

  4381   JNIHandles::destroy_weak_global(ref);

  4382 #ifndef USDT2

  4383   DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);

  4384 #else /* USDT2 */

  4385   HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(

  4386                                          );

  4387 #endif /* USDT2 */

  4388 JNI_END

  4391 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))

  4392   JNIWrapper("jni_ExceptionCheck");

  4393 #ifndef USDT2

  4394   DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);

  4395 #else /* USDT2 */

  4396  HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(

  4397                                   env);

  4398 #endif /* USDT2 */

  4399   jni_check_async_exceptions(thread);

  4400   jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;

  4401 #ifndef USDT2

  4402   DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);

  4403 #else /* USDT2 */

  4404  HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(

  4405                                    ret);

  4406 #endif /* USDT2 */

  4407   return ret;

  4408 JNI_END

  4411 // Initialization state for three routines below relating to

  4412 // java.nio.DirectBuffers

  4413 static          jint directBufferSupportInitializeStarted = 0;

  4414 static volatile jint directBufferSupportInitializeEnded   = 0;

  4415 static volatile jint directBufferSupportInitializeFailed  = 0;

  4416 static jclass    bufferClass                 = NULL;

  4417 static jclass    directBufferClass           = NULL;

  4418 static jclass    directByteBufferClass       = NULL;

  4419 static jmethodID directByteBufferConstructor = NULL;

  4420 static jfieldID  directBufferAddressField    = NULL;

  4421 static jfieldID  bufferCapacityField         = NULL;

  4423 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {

  4424   Handle loader;            // null (bootstrap) loader

  4425   Handle protection_domain; // null protection domain

  4427   TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);

  4428   jclass result =  find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);

  4430   if (TraceClassResolution && result != NULL) {

  4431     trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));

  4432   }

  4433   return result;

  4434 }

  4436 // These lookups are done with the NULL (bootstrap) ClassLoader to

  4437 // circumvent any security checks that would be done by jni_FindClass.

  4438 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))

  4439 {

  4440   if ((bufferClass           = lookupOne(env, "java/nio/Buffer", thread))           == NULL) { return false; }

  4441   if ((directBufferClass     = lookupOne(env, "sun/nio/ch/DirectBuffer", thread))   == NULL) { return false; }

  4442   if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }

  4443   return true;

  4444 }

  4445 JNI_END

  4448 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {

  4449   if (directBufferSupportInitializeFailed) {

  4450     return false;

  4451   }

  4453   if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {

  4454     if (!lookupDirectBufferClasses(env)) {

  4455       directBufferSupportInitializeFailed = 1;

  4456       return false;

  4457     }

  4459     // Make global references for these

  4460     bufferClass           = (jclass) env->NewGlobalRef(bufferClass);

  4461     directBufferClass     = (jclass) env->NewGlobalRef(directBufferClass);

  4462     directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);

  4464     // Get needed field and method IDs

  4465     directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");

  4466     if (env->ExceptionCheck()) {

  4467       env->ExceptionClear();

  4468       directBufferSupportInitializeFailed = 1;

  4469       return false;

  4470     }

  4471     directBufferAddressField    = env->GetFieldID(bufferClass, "address", "J");

  4472     if (env->ExceptionCheck()) {

  4473       env->ExceptionClear();

  4474       directBufferSupportInitializeFailed = 1;

  4475       return false;

  4476     }

  4477     bufferCapacityField         = env->GetFieldID(bufferClass, "capacity", "I");

  4478     if (env->ExceptionCheck()) {

  4479       env->ExceptionClear();

  4480       directBufferSupportInitializeFailed = 1;

  4481       return false;

  4482     }

  4484     if ((directByteBufferConstructor == NULL) ||

  4485         (directBufferAddressField    == NULL) ||

  4486         (bufferCapacityField         == NULL)) {

  4487       directBufferSupportInitializeFailed = 1;

  4488       return false;

  4489     }

  4491     directBufferSupportInitializeEnded = 1;

  4492   } else {

  4493     while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {

  4494       // Set state as yield_all can call os:sleep. On Solaris, yield_all calls

  4495       // os::sleep which requires the VM state transition. On other platforms, it

  4496       // is not necessary. The following call to change the VM state is purposely

  4497       // put inside the loop to avoid potential deadlock when multiple threads

  4498       // try to call this method. See 6791815 for more details.

  4499       ThreadInVMfromNative tivn(thread);

  4500       os::yield_all();

  4501     }

  4502   }

  4504   return !directBufferSupportInitializeFailed;

  4505 }

  4507 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)

  4508 {

  4509   // thread_from_jni_environment() will block if VM is gone.

  4510   JavaThread* thread = JavaThread::thread_from_jni_environment(env);

  4512   JNIWrapper("jni_NewDirectByteBuffer");

  4513 #ifndef USDT2

  4514   DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);

  4515 #else /* USDT2 */

  4516  HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(

  4517                                        env, address, capacity);

  4518 #endif /* USDT2 */

  4520   if (!directBufferSupportInitializeEnded) {

  4521     if (!initializeDirectBufferSupport(env, thread)) {

  4522 #ifndef USDT2

  4523       DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);

  4524 #else /* USDT2 */

  4525       HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(

  4526                                              NULL);

  4527 #endif /* USDT2 */

  4528       return NULL;

  4529     }

  4530   }

  4532   // Being paranoid about accidental sign extension on address

  4533   jlong addr = (jlong) ((uintptr_t) address);

  4534   // NOTE that package-private DirectByteBuffer constructor currently

  4535   // takes int capacity

  4536   jint  cap  = (jint)  capacity;

  4537   jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);

  4538 #ifndef USDT2

  4539   DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);

  4540 #else /* USDT2 */

  4541   HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(

  4542                                          ret);

  4543 #endif /* USDT2 */

  4544   return ret;

  4545 }

  4547 #ifndef USDT2

  4548 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);

  4549 #else /* USDT2 */

  4550 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*

  4551                     , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));

  4552 #endif /* USDT2 */

  4554 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)

  4555 {

  4556   // thread_from_jni_environment() will block if VM is gone.

  4557   JavaThread* thread = JavaThread::thread_from_jni_environment(env);

  4559   JNIWrapper("jni_GetDirectBufferAddress");

  4560 #ifndef USDT2

  4561   DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);

  4562 #else /* USDT2 */

  4563   HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(

  4564                                            env, buf);

  4565 #endif /* USDT2 */

  4566   void* ret = NULL;

  4567   DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);

  4569   if (!directBufferSupportInitializeEnded) {

  4570     if (!initializeDirectBufferSupport(env, thread)) {

  4571       return 0;

  4572     }

  4573   }

  4575   if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {

  4576     return 0;

  4577   }

  4579   ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);

  4580   return ret;

  4581 }

  4583 #ifndef USDT2

  4584 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);

  4585 #else /* USDT2 */

  4586 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong

  4587                     , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));

  4588 #endif /* USDT2 */

  4590 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)

  4591 {

  4592   // thread_from_jni_environment() will block if VM is gone.

  4593   JavaThread* thread = JavaThread::thread_from_jni_environment(env);

  4595   JNIWrapper("jni_GetDirectBufferCapacity");

  4596 #ifndef USDT2

  4597   DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);

  4598 #else /* USDT2 */

  4599   HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(

  4600                                             env, buf);

  4601 #endif /* USDT2 */

  4602   jlong ret = -1;

  4603   DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);

  4605   if (!directBufferSupportInitializeEnded) {

  4606     if (!initializeDirectBufferSupport(env, thread)) {

  4607       ret = 0;

  4608       return ret;

  4609     }

  4610   }

  4612   if (buf == NULL) {

  4613     return -1;

  4614   }

  4616   if (!env->IsInstanceOf(buf, directBufferClass)) {

  4617     return -1;

  4618   }

  4620   // NOTE that capacity is currently an int in the implementation

  4621   ret = env->GetIntField(buf, bufferCapacityField);

  4622   return ret;

  4623 }

  4626 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))

  4627   JNIWrapper("GetVersion");

  4628 #ifndef USDT2

  4629   DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);

  4630 #else /* USDT2 */

  4631   HOTSPOT_JNI_GETVERSION_ENTRY(

  4632                                env);

  4633 #endif /* USDT2 */

  4634 #ifndef USDT2

  4635   DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);

  4636 #else /* USDT2 */

  4637   HOTSPOT_JNI_GETVERSION_RETURN(

  4638                                 CurrentVersion);

  4639 #endif /* USDT2 */

  4640   return CurrentVersion;

  4641 JNI_END

  4643 extern struct JavaVM_ main_vm;

  4645 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))

  4646   JNIWrapper("jni_GetJavaVM");

  4647 #ifndef USDT2

  4648   DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);

  4649 #else /* USDT2 */

  4650   HOTSPOT_JNI_GETJAVAVM_ENTRY(

  4651                               env, (void **) vm);

  4652 #endif /* USDT2 */

  4653   *vm  = (JavaVM *)(&main_vm);

  4654 #ifndef USDT2

  4655   DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);

  4656 #else /* USDT2 */

  4657   HOTSPOT_JNI_GETJAVAVM_RETURN(

  4658                                JNI_OK);

  4659 #endif /* USDT2 */

  4660   return JNI_OK;

  4661 JNI_END

  4663 // Structure containing all jni functions

  4664 struct JNINativeInterface_ jni_NativeInterface = {

  4665     NULL,

  4666     NULL,

  4667     NULL,

  4669     NULL,

  4671     jni_GetVersion,

  4673     jni_DefineClass,

  4674     jni_FindClass,

  4676     jni_FromReflectedMethod,

  4677     jni_FromReflectedField,

  4679     jni_ToReflectedMethod,

  4681     jni_GetSuperclass,

  4682     jni_IsAssignableFrom,

  4684     jni_ToReflectedField,

  4686     jni_Throw,

  4687     jni_ThrowNew,

  4688     jni_ExceptionOccurred,

  4689     jni_ExceptionDescribe,

  4690     jni_ExceptionClear,

  4691     jni_FatalError,

  4693     jni_PushLocalFrame,

  4694     jni_PopLocalFrame,

  4696     jni_NewGlobalRef,

  4697     jni_DeleteGlobalRef,

  4698     jni_DeleteLocalRef,

  4699     jni_IsSameObject,

  4701     jni_NewLocalRef,

  4702     jni_EnsureLocalCapacity,

  4704     jni_AllocObject,

  4705     jni_NewObject,

  4706     jni_NewObjectV,

  4707     jni_NewObjectA,

  4709     jni_GetObjectClass,

  4710     jni_IsInstanceOf,

  4712     jni_GetMethodID,

  4714     jni_CallObjectMethod,

  4715     jni_CallObjectMethodV,

  4716     jni_CallObjectMethodA,

  4717     jni_CallBooleanMethod,

  4718     jni_CallBooleanMethodV,

  4719     jni_CallBooleanMethodA,

  4720     jni_CallByteMethod,

  4721     jni_CallByteMethodV,

  4722     jni_CallByteMethodA,

  4723     jni_CallCharMethod,

  4724     jni_CallCharMethodV,

  4725     jni_CallCharMethodA,

  4726     jni_CallShortMethod,

  4727     jni_CallShortMethodV,

  4728     jni_CallShortMethodA,

  4729     jni_CallIntMethod,

  4730     jni_CallIntMethodV,

  4731     jni_CallIntMethodA,

  4732     jni_CallLongMethod,

  4733     jni_CallLongMethodV,

  4734     jni_CallLongMethodA,

  4735     jni_CallFloatMethod,

  4736     jni_CallFloatMethodV,

  4737     jni_CallFloatMethodA,

  4738     jni_CallDoubleMethod,

  4739     jni_CallDoubleMethodV,

  4740     jni_CallDoubleMethodA,

  4741     jni_CallVoidMethod,

  4742     jni_CallVoidMethodV,

  4743     jni_CallVoidMethodA,

  4745     jni_CallNonvirtualObjectMethod,

  4746     jni_CallNonvirtualObjectMethodV,

  4747     jni_CallNonvirtualObjectMethodA,

  4748     jni_CallNonvirtualBooleanMethod,

  4749     jni_CallNonvirtualBooleanMethodV,

  4750     jni_CallNonvirtualBooleanMethodA,

  4751     jni_CallNonvirtualByteMethod,

  4752     jni_CallNonvirtualByteMethodV,

  4753     jni_CallNonvirtualByteMethodA,

  4754     jni_CallNonvirtualCharMethod,

  4755     jni_CallNonvirtualCharMethodV,

  4756     jni_CallNonvirtualCharMethodA,

  4757     jni_CallNonvirtualShortMethod,

  4758     jni_CallNonvirtualShortMethodV,

  4759     jni_CallNonvirtualShortMethodA,

  4760     jni_CallNonvirtualIntMethod,

  4761     jni_CallNonvirtualIntMethodV,

  4762     jni_CallNonvirtualIntMethodA,

  4763     jni_CallNonvirtualLongMethod,

  4764     jni_CallNonvirtualLongMethodV,

  4765     jni_CallNonvirtualLongMethodA,

  4766     jni_CallNonvirtualFloatMethod,

  4767     jni_CallNonvirtualFloatMethodV,

  4768     jni_CallNonvirtualFloatMethodA,

  4769     jni_CallNonvirtualDoubleMethod,

  4770     jni_CallNonvirtualDoubleMethodV,

  4771     jni_CallNonvirtualDoubleMethodA,

  4772     jni_CallNonvirtualVoidMethod,

  4773     jni_CallNonvirtualVoidMethodV,

  4774     jni_CallNonvirtualVoidMethodA,

  4776     jni_GetFieldID,

  4778     jni_GetObjectField,

  4779     jni_GetBooleanField,

  4780     jni_GetByteField,

  4781     jni_GetCharField,

  4782     jni_GetShortField,

  4783     jni_GetIntField,

  4784     jni_GetLongField,

  4785     jni_GetFloatField,

  4786     jni_GetDoubleField,

  4788     jni_SetObjectField,

  4789     jni_SetBooleanField,

  4790     jni_SetByteField,

  4791     jni_SetCharField,

  4792     jni_SetShortField,

  4793     jni_SetIntField,

  4794     jni_SetLongField,

  4795     jni_SetFloatField,

  4796     jni_SetDoubleField,

  4798     jni_GetStaticMethodID,

  4800     jni_CallStaticObjectMethod,

  4801     jni_CallStaticObjectMethodV,

  4802     jni_CallStaticObjectMethodA,

  4803     jni_CallStaticBooleanMethod,

  4804     jni_CallStaticBooleanMethodV,

  4805     jni_CallStaticBooleanMethodA,

  4806     jni_CallStaticByteMethod,

  4807     jni_CallStaticByteMethodV,

  4808     jni_CallStaticByteMethodA,

  4809     jni_CallStaticCharMethod,

  4810     jni_CallStaticCharMethodV,

  4811     jni_CallStaticCharMethodA,

  4812     jni_CallStaticShortMethod,

  4813     jni_CallStaticShortMethodV,

  4814     jni_CallStaticShortMethodA,

  4815     jni_CallStaticIntMethod,

  4816     jni_CallStaticIntMethodV,

  4817     jni_CallStaticIntMethodA,

  4818     jni_CallStaticLongMethod,

  4819     jni_CallStaticLongMethodV,

  4820     jni_CallStaticLongMethodA,

  4821     jni_CallStaticFloatMethod,

  4822     jni_CallStaticFloatMethodV,

  4823     jni_CallStaticFloatMethodA,

  4824     jni_CallStaticDoubleMethod,

  4825     jni_CallStaticDoubleMethodV,

  4826     jni_CallStaticDoubleMethodA,

  4827     jni_CallStaticVoidMethod,

  4828     jni_CallStaticVoidMethodV,

  4829     jni_CallStaticVoidMethodA,

  4831     jni_GetStaticFieldID,

  4833     jni_GetStaticObjectField,

  4834     jni_GetStaticBooleanField,

  4835     jni_GetStaticByteField,

  4836     jni_GetStaticCharField,

  4837     jni_GetStaticShortField,

  4838     jni_GetStaticIntField,

  4839     jni_GetStaticLongField,

  4840     jni_GetStaticFloatField,

  4841     jni_GetStaticDoubleField,

  4843     jni_SetStaticObjectField,

  4844     jni_SetStaticBooleanField,

  4845     jni_SetStaticByteField,

  4846     jni_SetStaticCharField,

  4847     jni_SetStaticShortField,

  4848     jni_SetStaticIntField,

  4849     jni_SetStaticLongField,

  4850     jni_SetStaticFloatField,

  4851     jni_SetStaticDoubleField,

  4853     jni_NewString,

  4854     jni_GetStringLength,

  4855     jni_GetStringChars,

  4856     jni_ReleaseStringChars,

  4858     jni_NewStringUTF,

  4859     jni_GetStringUTFLength,

  4860     jni_GetStringUTFChars,

  4861     jni_ReleaseStringUTFChars,

  4863     jni_GetArrayLength,

  4865     jni_NewObjectArray,

  4866     jni_GetObjectArrayElement,

  4867     jni_SetObjectArrayElement,

  4869     jni_NewBooleanArray,

  4870     jni_NewByteArray,

  4871     jni_NewCharArray,

  4872     jni_NewShortArray,

  4873     jni_NewIntArray,

  4874     jni_NewLongArray,

  4875     jni_NewFloatArray,

  4876     jni_NewDoubleArray,

  4878     jni_GetBooleanArrayElements,

  4879     jni_GetByteArrayElements,

  4880     jni_GetCharArrayElements,

  4881     jni_GetShortArrayElements,

  4882     jni_GetIntArrayElements,

  4883     jni_GetLongArrayElements,

  4884     jni_GetFloatArrayElements,

  4885     jni_GetDoubleArrayElements,

  4887     jni_ReleaseBooleanArrayElements,

  4888     jni_ReleaseByteArrayElements,

  4889     jni_ReleaseCharArrayElements,

  4890     jni_ReleaseShortArrayElements,

  4891     jni_ReleaseIntArrayElements,

  4892     jni_ReleaseLongArrayElements,

  4893     jni_ReleaseFloatArrayElements,

  4894     jni_ReleaseDoubleArrayElements,

  4896     jni_GetBooleanArrayRegion,

  4897     jni_GetByteArrayRegion,

  4898     jni_GetCharArrayRegion,

  4899     jni_GetShortArrayRegion,

  4900     jni_GetIntArrayRegion,

  4901     jni_GetLongArrayRegion,

  4902     jni_GetFloatArrayRegion,

  4903     jni_GetDoubleArrayRegion,

  4905     jni_SetBooleanArrayRegion,

  4906     jni_SetByteArrayRegion,

  4907     jni_SetCharArrayRegion,

  4908     jni_SetShortArrayRegion,

  4909     jni_SetIntArrayRegion,

  4910     jni_SetLongArrayRegion,

  4911     jni_SetFloatArrayRegion,

  4912     jni_SetDoubleArrayRegion,

  4914     jni_RegisterNatives,

  4915     jni_UnregisterNatives,

  4917     jni_MonitorEnter,

  4918     jni_MonitorExit,

  4920     jni_GetJavaVM,

  4922     jni_GetStringRegion,

  4923     jni_GetStringUTFRegion,

  4925     jni_GetPrimitiveArrayCritical,

  4926     jni_ReleasePrimitiveArrayCritical,

  4928     jni_GetStringCritical,

  4929     jni_ReleaseStringCritical,

  4931     jni_NewWeakGlobalRef,

  4932     jni_DeleteWeakGlobalRef,

  4934     jni_ExceptionCheck,

  4936     jni_NewDirectByteBuffer,

  4937     jni_GetDirectBufferAddress,

  4938     jni_GetDirectBufferCapacity,

  4940     // New 1_6 features

  4942     jni_GetObjectRefType

  4943 };

  4946 // For jvmti use to modify jni function table.

  4947 // Java threads in native contiues to run until it is transitioned

  4948 // to VM at safepoint. Before the transition or before it is blocked

  4949 // for safepoint it may access jni function table. VM could crash if

  4950 // any java thread access the jni function table in the middle of memcpy.

  4951 // To avoid this each function pointers are copied automically.

  4952 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {

  4953   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");

  4954   intptr_t *a = (intptr_t *) jni_functions();

  4955   intptr_t *b = (intptr_t *) new_jni_NativeInterface;

  4956   for (uint i=0; i <  sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {

  4957     Atomic::store_ptr(*b++, a++);

  4958   }

  4959 }

  4961 void quicken_jni_functions() {

  4962   // Replace Get<Primitive>Field with fast versions

  4963   if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()

  4964       && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls

  4965 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)

  4966       // windows x86 currently needs SEH wrapper and the gain of the fast

  4967       // versions currently isn't certain for server vm on uniprocessor.

  4968       && os::is_MP()

  4969 #endif

  4970   ) {

  4971     address func;

  4972     func = JNI_FastGetField::generate_fast_get_boolean_field();

  4973     if (func != (address)-1) {

  4974       jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;

  4975     }

  4976     func = JNI_FastGetField::generate_fast_get_byte_field();

  4977     if (func != (address)-1) {

  4978       jni_NativeInterface.GetByteField = (GetByteField_t)func;

  4979     }

  4980     func = JNI_FastGetField::generate_fast_get_char_field();

  4981     if (func != (address)-1) {

  4982       jni_NativeInterface.GetCharField = (GetCharField_t)func;

  4983     }

  4984     func = JNI_FastGetField::generate_fast_get_short_field();

  4985     if (func != (address)-1) {

  4986       jni_NativeInterface.GetShortField = (GetShortField_t)func;

  4987     }

  4988     func = JNI_FastGetField::generate_fast_get_int_field();

  4989     if (func != (address)-1) {

  4990       jni_NativeInterface.GetIntField = (GetIntField_t)func;

  4991     }

  4992     func = JNI_FastGetField::generate_fast_get_long_field();

  4993     if (func != (address)-1) {

  4994       jni_NativeInterface.GetLongField = (GetLongField_t)func;

  4995     }

  4996     func = JNI_FastGetField::generate_fast_get_float_field();

  4997     if (func != (address)-1) {

  4998       jni_NativeInterface.GetFloatField = (GetFloatField_t)func;

  4999     }

  5000     func = JNI_FastGetField::generate_fast_get_double_field();

  5001     if (func != (address)-1) {

  5002       jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;

  5003     }

  5004   }

  5005 }

  5007 // Returns the function structure

  5008 struct JNINativeInterface_* jni_functions() {

  5009 #if INCLUDE_JNI_CHECK

  5010   if (CheckJNICalls) return jni_functions_check();

  5011 #endif // INCLUDE_JNI_CHECK

  5012   return &jni_NativeInterface;

  5013 }

  5015 // Returns the function structure

  5016 struct JNINativeInterface_* jni_functions_nocheck() {

  5017   return &jni_NativeInterface;

  5018 }

  5021 // Invocation API

  5024 // Forward declaration

  5025 extern const struct JNIInvokeInterface_ jni_InvokeInterface;

  5027 // Global invocation API vars

  5028 volatile jint vm_created = 0;

  5029 // Indicate whether it is safe to recreate VM

  5030 volatile jint safe_to_recreate_vm = 1;

  5031 struct JavaVM_ main_vm = {&jni_InvokeInterface};

  5034 #define JAVASTACKSIZE (400 * 1024)    /* Default size of a thread java stack */

  5035 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };

  5037 #ifndef USDT2

  5038 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);

  5039 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);

  5040 #else /* USDT2 */

  5041 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint

  5042                     , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));

  5043 #endif /* USDT2 */

  5045 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {

  5046 #ifndef USDT2

  5047   HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);

  5048 #else /* USDT2 */

  5049   HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(

  5050                                              args_);

  5051 #endif /* USDT2 */

  5052   JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;

  5053   jint ret = JNI_ERR;

  5054   DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);

  5056   if (Threads::is_supported_jni_version(args->version)) {

  5057     ret = JNI_OK;

  5058   }

  5059   // 1.1 style no longer supported in hotspot.

  5060   // According the JNI spec, we should update args->version on return.

  5061   // We also use the structure to communicate with launcher about default

  5062   // stack size.

  5063   if (args->version == JNI_VERSION_1_1) {

  5064     args->version = JNI_VERSION_1_2;

  5065     // javaStackSize is int in arguments structure

  5066     assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");

  5067     args->javaStackSize = (jint)(ThreadStackSize * K);

  5068   }

  5069   return ret;

  5070 }

  5072 #ifndef PRODUCT

  5074 #include "gc_implementation/shared/gcTimer.hpp"

  5075 #include "gc_interface/collectedHeap.hpp"

  5076 #if INCLUDE_ALL_GCS

  5077 #include "gc_implementation/g1/heapRegionRemSet.hpp"

  5078 #endif

  5079 #include "memory/guardedMemory.hpp"

  5080 #include "utilities/quickSort.hpp"

  5081 #include "utilities/ostream.hpp"

  5082 #if INCLUDE_VM_STRUCTS

  5083 #include "runtime/vmStructs.hpp"

  5084 #endif

  5086 #define run_unit_test(unit_test_function_call)              \

  5087   tty->print_cr("Running test: " #unit_test_function_call); \

  5088   unit_test_function_call

  5090 // Forward declaration

  5091 void TestOS_test();

  5092 void TestReservedSpace_test();

  5093 void TestReserveMemorySpecial_test();

  5094 void TestVirtualSpace_test();

  5095 void TestMetaspaceAux_test();

  5096 void TestMetachunk_test();

  5097 void TestVirtualSpaceNode_test();

  5098 void TestNewSize_test();

  5099 void TestKlass_test();

  5100 void Test_linked_list();

  5101 void TestChunkedList_test();

  5102 #if INCLUDE_ALL_GCS

  5103 void TestOldFreeSpaceCalculation_test();

  5104 void TestG1BiasedArray_test();

  5105 void TestBufferingOopClosure_test();

  5106 void TestCodeCacheRemSet_test();

  5107 void FreeRegionList_test();

  5108 #endif

  5110 void execute_internal_vm_tests() {

  5111   if (ExecuteInternalVMTests) {

  5112     tty->print_cr("Running internal VM tests");

  5113     run_unit_test(TestOS_test());

  5114     run_unit_test(TestReservedSpace_test());

  5115     run_unit_test(TestReserveMemorySpecial_test());

  5116     run_unit_test(TestVirtualSpace_test());

  5117     run_unit_test(TestMetaspaceAux_test());

  5118     run_unit_test(TestMetachunk_test());

  5119     run_unit_test(TestVirtualSpaceNode_test());

  5120     run_unit_test(GlobalDefinitions::test_globals());

  5121     run_unit_test(GCTimerAllTest::all());

  5122     run_unit_test(arrayOopDesc::test_max_array_length());

  5123     run_unit_test(CollectedHeap::test_is_in());

  5124     run_unit_test(QuickSort::test_quick_sort());

  5125     run_unit_test(GuardedMemory::test_guarded_memory());

  5126     run_unit_test(AltHashing::test_alt_hash());

  5127     run_unit_test(test_loggc_filename());

  5128     run_unit_test(TestNewSize_test());

  5129     run_unit_test(TestKlass_test());

  5130     run_unit_test(Test_linked_list());

  5131     run_unit_test(TestChunkedList_test());

  5132 #if INCLUDE_VM_STRUCTS

  5133     run_unit_test(VMStructs::test());

  5134 #endif

  5135 #if INCLUDE_ALL_GCS

  5136     run_unit_test(TestOldFreeSpaceCalculation_test());

  5137     run_unit_test(TestG1BiasedArray_test());

  5138     run_unit_test(HeapRegionRemSet::test_prt());

  5139     run_unit_test(TestBufferingOopClosure_test());

  5140     run_unit_test(TestCodeCacheRemSet_test());

  5141     if (UseG1GC) {

  5142       run_unit_test(FreeRegionList_test());

  5143     }

  5144 #endif

  5145     tty->print_cr("All internal VM tests passed");

  5146   }

  5147 }

  5149 #undef run_unit_test

  5151 #endif

  5153 #ifndef USDT2

  5154 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);

  5155 DT_RETURN_MARK_DECL(CreateJavaVM, jint);

  5156 #else /* USDT2 */

  5157 DT_RETURN_MARK_DECL(CreateJavaVM, jint

  5158                     , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));

  5159 #endif /* USDT2 */

  5161 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {

  5162 #ifndef USDT2

  5163   HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);

  5164 #else /* USDT2 */

  5165   HOTSPOT_JNI_CREATEJAVAVM_ENTRY(

  5166                                  (void **) vm, penv, args);

  5167 #endif /* USDT2 */

  5169   jint result = JNI_ERR;

  5170   DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);

  5172   // We're about to use Atomic::xchg for synchronization.  Some Zero

  5173   // platforms use the GCC builtin __sync_lock_test_and_set for this,

  5174   // but __sync_lock_test_and_set is not guaranteed to do what we want

  5175   // on all architectures.  So we check it works before relying on it.

  5176 #if defined(ZERO) && defined(ASSERT)

  5177   {

  5178     jint a = 0xcafebabe;

  5179     jint b = Atomic::xchg(0xdeadbeef, &a);

  5180     void *c = &a;

  5181     void *d = Atomic::xchg_ptr(&b, &c);

  5182     assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");

  5183     assert(c == &b && d == &a, "Atomic::xchg_ptr() works");

  5184   }

  5185 #endif // ZERO && ASSERT

  5187   // At the moment it's only possible to have one Java VM,

  5188   // since some of the runtime state is in global variables.

  5190   // We cannot use our mutex locks here, since they only work on

  5191   // Threads. We do an atomic compare and exchange to ensure only

  5192   // one thread can call this method at a time

  5194   // We use Atomic::xchg rather than Atomic::add/dec since on some platforms

  5195   // the add/dec implementations are dependent on whether we are running

  5196   // on a multiprocessor, and at this stage of initialization the os::is_MP

  5197   // function used to determine this will always return false. Atomic::xchg

  5198   // does not have this problem.

  5199   if (Atomic::xchg(1, &vm_created) == 1) {

  5200     return JNI_EEXIST;   // already created, or create attempt in progress

  5201   }

  5202   if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {

  5203     return JNI_ERR;  // someone tried and failed and retry not allowed.

  5204   }

  5206   assert(vm_created == 1, "vm_created is true during the creation");

  5208   /**

  5209    * Certain errors during initialization are recoverable and do not

  5210    * prevent this method from being called again at a later time

  5211    * (perhaps with different arguments).  However, at a certain

  5212    * point during initialization if an error occurs we cannot allow

  5213    * this function to be called again (or it will crash).  In those

  5214    * situations, the 'canTryAgain' flag is set to false, which atomically

  5215    * sets safe_to_recreate_vm to 1, such that any new call to

  5216    * JNI_CreateJavaVM will immediately fail using the above logic.

  5217    */

  5218   bool can_try_again = true;

  5220   result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);

  5221   if (result == JNI_OK) {

  5222     JavaThread *thread = JavaThread::current();

  5223     /* thread is thread_in_vm here */

  5224     *vm = (JavaVM *)(&main_vm);

  5225     *(JNIEnv**)penv = thread->jni_environment();

  5227     // Tracks the time application was running before GC

  5228     RuntimeService::record_application_start();

  5230     // Notify JVMTI

  5231     if (JvmtiExport::should_post_thread_life()) {

  5232        JvmtiExport::post_thread_start(thread);

  5233     }

  5235     EventThreadStart event;

  5236     if (event.should_commit()) {

  5237       event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));

  5238       event.commit();

  5239     }

  5241 #ifndef PRODUCT

  5242   #ifndef CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED

  5243     #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()

  5244   #endif

  5246     // Check if we should compile all classes on bootclasspath

  5247     if (CompileTheWorld) ClassLoader::compile_the_world();

  5248     if (ReplayCompiles) ciReplay::replay(thread);

  5250     // Some platforms (like Win*) need a wrapper around these test

  5251     // functions in order to properly handle error conditions.

  5252     CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);

  5253     CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);

  5254 #endif

  5256     // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.

  5257     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);

  5258   } else {

  5259     if (can_try_again) {

  5260       // reset safe_to_recreate_vm to 1 so that retrial would be possible

  5261       safe_to_recreate_vm = 1;

  5262     }

  5264     // Creation failed. We must reset vm_created

  5265     *vm = 0;

  5266     *(JNIEnv**)penv = 0;

  5267     // reset vm_created last to avoid race condition. Use OrderAccess to

  5268     // control both compiler and architectural-based reordering.

  5269     OrderAccess::release_store(&vm_created, 0);

  5270   }

  5272   return result;

  5273 }

  5275 #ifndef USDT2

  5276 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \

  5277   JavaVM**, jsize, jsize*);

  5278 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);

  5279 #endif /* !USDT2 */

  5281 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {

  5282   // See bug 4367188, the wrapper can sometimes cause VM crashes

  5283   // JNIWrapper("GetCreatedJavaVMs");

  5284 #ifndef USDT2

  5285   HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \

  5286     vm_buf, bufLen, numVMs);

  5287 #else /* USDT2 */

  5288   HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(

  5289                                       (void **) vm_buf, bufLen, (uintptr_t *) numVMs);

  5290 #endif /* USDT2 */

  5291   if (vm_created) {

  5292     if (numVMs != NULL) *numVMs = 1;

  5293     if (bufLen > 0)     *vm_buf = (JavaVM *)(&main_vm);

  5294   } else {

  5295     if (numVMs != NULL) *numVMs = 0;

  5296   }

  5297 #ifndef USDT2

  5298   HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);

  5299 #else /* USDT2 */

  5300   HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(

  5301                                     JNI_OK);

  5302 #endif /* USDT2 */

  5303   return JNI_OK;

  5304 }

  5306 extern "C" {

  5308 #ifndef USDT2

  5309 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);

  5310 #else /* USDT2 */

  5311 DT_RETURN_MARK_DECL(DestroyJavaVM, jint

  5312                     , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));

  5313 #endif /* USDT2 */

  5315 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {

  5316 #ifndef USDT2

  5317   DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);

  5318 #else /* USDT2 */

  5319   HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(

  5320                                   vm);

  5321 #endif /* USDT2 */

  5322   jint res = JNI_ERR;

  5323   DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);

  5325   if (!vm_created) {

  5326     res = JNI_ERR;

  5327     return res;

  5328   }

  5330   JNIWrapper("DestroyJavaVM");

  5331   JNIEnv *env;

  5332   JavaVMAttachArgs destroyargs;

  5333   destroyargs.version = CurrentVersion;

  5334   destroyargs.name = (char *)"DestroyJavaVM";

  5335   destroyargs.group = NULL;

  5336   res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);

  5337   if (res != JNI_OK) {

  5338     return res;

  5339   }

  5341   // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.

  5342   JavaThread* thread = JavaThread::current();

  5343   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);

  5344   if (Threads::destroy_vm()) {

  5345     // Should not change thread state, VM is gone

  5346     vm_created = false;

  5347     res = JNI_OK;

  5348     return res;

  5349   } else {

  5350     ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);

  5351     res = JNI_ERR;

  5352     return res;

  5353   }

  5354 }

  5357 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {

  5358   JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;

  5360   // Check below commented out from JDK1.2fcs as well

  5361   /*

  5362   if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {

  5363     return JNI_EVERSION;

  5364   }

  5365   */

  5367   Thread* t = ThreadLocalStorage::get_thread_slow();

  5368   if (t != NULL) {

  5369     // If the thread has been attached this operation is a no-op

  5370     *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();

  5371     return JNI_OK;

  5372   }

  5374   // Create a thread and mark it as attaching so it will be skipped by the

  5375   // ThreadsListEnumerator - see CR 6404306

  5376   JavaThread* thread = new JavaThread(true);

  5378   // Set correct safepoint info. The thread is going to call into Java when

  5379   // initializing the Java level thread object. Hence, the correct state must

  5380   // be set in order for the Safepoint code to deal with it correctly.

  5381   thread->set_thread_state(_thread_in_vm);

  5382   // Must do this before initialize_thread_local_storage

  5383   thread->record_stack_base_and_size();

  5385   thread->initialize_thread_local_storage();

  5387   if (!os::create_attached_thread(thread)) {

  5388     delete thread;

  5389     return JNI_ERR;

  5390   }

  5391   // Enable stack overflow checks

  5392   thread->create_stack_guard_pages();

  5394   thread->initialize_tlab();

  5396   thread->cache_global_variables();

  5398   // Crucial that we do not have a safepoint check for this thread, since it has

  5399   // not been added to the Thread list yet.

  5400   { Threads_lock->lock_without_safepoint_check();

  5401     // This must be inside this lock in order to get FullGCALot to work properly, i.e., to

  5402     // avoid this thread trying to do a GC before it is added to the thread-list

  5403     thread->set_active_handles(JNIHandleBlock::allocate_block());

  5404     Threads::add(thread, daemon);

  5405     Threads_lock->unlock();

  5406   }

  5407   // Create thread group and name info from attach arguments

  5408   oop group = NULL;

  5409   char* thread_name = NULL;

  5410   if (args != NULL && Threads::is_supported_jni_version(args->version)) {

  5411     group = JNIHandles::resolve(args->group);

  5412     thread_name = args->name; // may be NULL

  5413   }

  5414   if (group == NULL) group = Universe::main_thread_group();

  5416   // Create Java level thread object and attach it to this thread

  5417   bool attach_failed = false;

  5418   {

  5419     EXCEPTION_MARK;

  5420     HandleMark hm(THREAD);

  5421     Handle thread_group(THREAD, group);

  5422     thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);

  5423     if (HAS_PENDING_EXCEPTION) {

  5424       CLEAR_PENDING_EXCEPTION;

  5425       // cleanup outside the handle mark.

  5426       attach_failed = true;

  5427     }

  5428   }

  5430   if (attach_failed) {

  5431     // Added missing cleanup

  5432     thread->cleanup_failed_attach_current_thread();

  5433     return JNI_ERR;

  5434   }

  5436   // mark the thread as no longer attaching

  5437   // this uses a fence to push the change through so we don't have

  5438   // to regrab the threads_lock

  5439   thread->set_done_attaching_via_jni();

  5441   // Set java thread status.

  5442   java_lang_Thread::set_thread_status(thread->threadObj(),

  5443               java_lang_Thread::RUNNABLE);

  5445   // Notify the debugger

  5446   if (JvmtiExport::should_post_thread_life()) {

  5447     JvmtiExport::post_thread_start(thread);

  5448   }

  5450   EventThreadStart event;

  5451   if (event.should_commit()) {

  5452     event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));

  5453     event.commit();

  5454   }

  5456   *(JNIEnv**)penv = thread->jni_environment();

  5458   // Now leaving the VM, so change thread_state. This is normally automatically taken care

  5459   // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by

  5460   // using ThreadStateTransition::transition, we do a callback to the safepoint code if

  5461   // needed.

  5463   ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);

  5465   // Perform any platform dependent FPU setup

  5466   os::setup_fpu();

  5468   return JNI_OK;

  5469 }

  5472 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {

  5473 #ifndef USDT2

  5474   DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);

  5475 #else /* USDT2 */

  5476   HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(

  5477                                         vm, penv, _args);

  5478 #endif /* USDT2 */

  5479   if (!vm_created) {

  5480 #ifndef USDT2

  5481     DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);

  5482 #else /* USDT2 */

  5483   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(

  5484                                          (uint32_t) JNI_ERR);

  5485 #endif /* USDT2 */

  5486     return JNI_ERR;

  5487   }

  5489   JNIWrapper("AttachCurrentThread");

  5490   jint ret = attach_current_thread(vm, penv, _args, false);

  5491 #ifndef USDT2

  5492   DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);

  5493 #else /* USDT2 */

  5494   HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(

  5495                                          ret);

  5496 #endif /* USDT2 */

  5497   return ret;

  5498 }

  5501 jint JNICALL jni_DetachCurrentThread(JavaVM *vm)  {

  5502 #ifndef USDT2

  5503   DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);

  5504 #else /* USDT2 */

  5505   HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(

  5506                                         vm);

  5507 #endif /* USDT2 */

  5508   VM_Exit::block_if_vm_exited();

  5510   JNIWrapper("DetachCurrentThread");

  5512   // If the thread has been deattacted the operations is a no-op

  5513   if (ThreadLocalStorage::thread() == NULL) {

  5514 #ifndef USDT2

  5515     DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);

  5516 #else /* USDT2 */

  5517   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(

  5518                                          JNI_OK);

  5519 #endif /* USDT2 */

  5520     return JNI_OK;

  5521   }

  5523   JavaThread* thread = JavaThread::current();

  5524   if (thread->has_last_Java_frame()) {

  5525 #ifndef USDT2

  5526     DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);

  5527 #else /* USDT2 */

  5528   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(

  5529                                          (uint32_t) JNI_ERR);

  5530 #endif /* USDT2 */

  5531     // Can't detach a thread that's running java, that can't work.

  5532     return JNI_ERR;

  5533   }

  5535   // Safepoint support. Have to do call-back to safepoint code, if in the

  5536   // middel of a safepoint operation

  5537   ThreadStateTransition::transition_from_native(thread, _thread_in_vm);

  5539   // XXX: Note that JavaThread::exit() call below removes the guards on the

  5540   // stack pages set up via enable_stack_{red,yellow}_zone() calls

  5541   // above in jni_AttachCurrentThread. Unfortunately, while the setting

  5542   // of the guards is visible in jni_AttachCurrentThread above,

  5543   // the removal of the guards is buried below in JavaThread::exit()

  5544   // here. The abstraction should be more symmetrically either exposed

  5545   // or hidden (e.g. it could probably be hidden in the same

  5546   // (platform-dependent) methods where we do alternate stack

  5547   // maintenance work?)

  5548   thread->exit(false, JavaThread::jni_detach);

  5549   delete thread;

  5551 #ifndef USDT2

  5552   DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);

  5553 #else /* USDT2 */

  5554   HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(

  5555                                          JNI_OK);

  5556 #endif /* USDT2 */

  5557   return JNI_OK;

  5558 }

  5560 #ifndef USDT2

  5561 DT_RETURN_MARK_DECL(GetEnv, jint);

  5562 #else /* USDT2 */

  5563 DT_RETURN_MARK_DECL(GetEnv, jint

  5564                     , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));

  5565 #endif /* USDT2 */

  5567 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {

  5568 #ifndef USDT2

  5569   DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);

  5570 #else /* USDT2 */

  5571   HOTSPOT_JNI_GETENV_ENTRY(

  5572                            vm, penv, version);

  5573 #endif /* USDT2 */

  5574   jint ret = JNI_ERR;

  5575   DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);

  5577   if (!vm_created) {

  5578     *penv = NULL;

  5579     ret = JNI_EDETACHED;

  5580     return ret;

  5581   }

  5583   if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {

  5584     return ret;

  5585   }

  5587 #ifndef JVMPI_VERSION_1

  5588 // need these in order to be polite about older agents

  5589 #define JVMPI_VERSION_1   ((jint)0x10000001)

  5590 #define JVMPI_VERSION_1_1 ((jint)0x10000002)

  5591 #define JVMPI_VERSION_1_2 ((jint)0x10000003)

  5592 #endif // !JVMPI_VERSION_1

  5594   Thread* thread = ThreadLocalStorage::thread();

  5595   if (thread != NULL && thread->is_Java_thread()) {

  5596     if (Threads::is_supported_jni_version_including_1_1(version)) {

  5597       *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();

  5598       ret = JNI_OK;

  5599       return ret;

  5601     } else if (version == JVMPI_VERSION_1 ||

  5602                version == JVMPI_VERSION_1_1 ||

  5603                version == JVMPI_VERSION_1_2) {

  5604       tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");

  5605       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");

  5606       ret = JNI_EVERSION;

  5607       return ret;

  5608     } else if (JvmtiExport::is_jvmdi_version(version)) {

  5609       tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");

  5610       tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");

  5611       ret = JNI_EVERSION;

  5612       return ret;

  5613     } else {

  5614       *penv = NULL;

  5615       ret = JNI_EVERSION;

  5616       return ret;

  5617     }

  5618   } else {

  5619     *penv = NULL;

  5620     ret = JNI_EDETACHED;

  5621     return ret;

  5622   }

  5623 }

  5626 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {

  5627 #ifndef USDT2

  5628   DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);

  5629 #else /* USDT2 */

  5630   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(

  5631                                                 vm, penv, _args);

  5632 #endif /* USDT2 */

  5633   if (!vm_created) {

  5634 #ifndef USDT2

  5635     DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);

  5636 #else /* USDT2 */

  5637   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(

  5638                                                  (uint32_t) JNI_ERR);

  5639 #endif /* USDT2 */

  5640     return JNI_ERR;

  5641   }

  5643   JNIWrapper("AttachCurrentThreadAsDaemon");

  5644   jint ret = attach_current_thread(vm, penv, _args, true);

  5645 #ifndef USDT2

  5646   DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);

  5647 #else /* USDT2 */

  5648   HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(

  5649                                                  ret);

  5650 #endif /* USDT2 */

  5651   return ret;

  5652 }

  5655 } // End extern "C"

  5657 const struct JNIInvokeInterface_ jni_InvokeInterface = {

  5658     NULL,

  5659     NULL,

  5660     NULL,

  5662     jni_DestroyJavaVM,

  5663     jni_AttachCurrentThread,

  5664     jni_DetachCurrentThread,

  5665     jni_GetEnv,

  5666     jni_AttachCurrentThreadAsDaemon

  5667 };

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/prims/jni.cpp@392f8722fc51

src/share/vm/prims/jni.cpp