Tue, 17 Oct 2017 12:58:25 +0800
merge
1 /*
2 * Copyright (c) 1997, 2014, 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() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1125 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1126 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1127 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1128 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1130 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1132 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1133 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1134 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1135 inline void get_object() { jobject l = va_arg(_ap, jobject);
1136 _arguments->push_oop(Handle((oop *)l, false)); }
1138 inline void set_ap(va_list rap) {
1139 #ifdef va_copy
1140 va_copy(_ap, rap);
1141 #elif defined (__va_copy)
1142 __va_copy(_ap, rap);
1143 #else
1144 _ap = rap;
1145 #endif
1146 }
1148 public:
1149 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1150 : JNI_ArgumentPusher(signature) {
1151 set_ap(rap);
1152 }
1153 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1154 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1155 set_ap(rap);
1156 }
1158 // Optimized path if we have the bitvector form of signature
1159 void iterate( uint64_t fingerprint ) {
1160 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1161 else {
1162 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1163 result_feature_mask);
1165 assert(fingerprint, "Fingerprint should not be 0");
1166 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1167 while ( 1 ) {
1168 switch ( fingerprint & parameter_feature_mask ) {
1169 case bool_parm:
1170 case char_parm:
1171 case short_parm:
1172 case byte_parm:
1173 case int_parm:
1174 get_int();
1175 break;
1176 case obj_parm:
1177 get_object();
1178 break;
1179 case long_parm:
1180 get_long();
1181 break;
1182 case float_parm:
1183 get_float();
1184 break;
1185 case double_parm:
1186 get_double();
1187 break;
1188 case done_parm:
1189 return;
1190 break;
1191 default:
1192 ShouldNotReachHere();
1193 break;
1194 }
1195 fingerprint >>= parameter_feature_size;
1196 }
1197 }
1198 }
1199 };
1202 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1203 protected:
1204 const jvalue *_ap;
1206 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1207 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1208 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1209 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1210 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1212 inline void get_long() { _arguments->push_long((_ap++)->j); }
1213 inline void get_float() { _arguments->push_float((_ap++)->f); }
1214 inline void get_double() { _arguments->push_double((_ap++)->d);}
1215 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1217 inline void set_ap(const jvalue *rap) { _ap = rap; }
1219 public:
1220 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1221 : JNI_ArgumentPusher(signature) {
1222 set_ap(rap);
1223 }
1224 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1225 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1226 set_ap(rap);
1227 }
1229 // Optimized path if we have the bitvector form of signature
1230 void iterate( uint64_t fingerprint ) {
1231 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1232 else {
1233 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1234 result_feature_mask);
1235 assert(fingerprint, "Fingerprint should not be 0");
1236 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1237 while ( 1 ) {
1238 switch ( fingerprint & parameter_feature_mask ) {
1239 case bool_parm:
1240 get_bool();
1241 break;
1242 case char_parm:
1243 get_char();
1244 break;
1245 case short_parm:
1246 get_short();
1247 break;
1248 case byte_parm:
1249 get_byte();
1250 break;
1251 case int_parm:
1252 get_int();
1253 break;
1254 case obj_parm:
1255 get_object();
1256 break;
1257 case long_parm:
1258 get_long();
1259 break;
1260 case float_parm:
1261 get_float();
1262 break;
1263 case double_parm:
1264 get_double();
1265 break;
1266 case done_parm:
1267 return;
1268 break;
1269 default:
1270 ShouldNotReachHere();
1271 break;
1272 }
1273 fingerprint >>= parameter_feature_size;
1274 }
1275 }
1276 }
1277 };
1280 enum JNICallType {
1281 JNI_STATIC,
1282 JNI_VIRTUAL,
1283 JNI_NONVIRTUAL
1284 };
1288 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1289 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1291 // Create object to hold arguments for the JavaCall, and associate it with
1292 // the jni parser
1293 ResourceMark rm(THREAD);
1294 int number_of_parameters = method->size_of_parameters();
1295 JavaCallArguments java_args(number_of_parameters);
1296 args->set_java_argument_object(&java_args);
1298 assert(method->is_static(), "method should be static");
1300 // Fill out JavaCallArguments object
1301 args->iterate( Fingerprinter(method).fingerprint() );
1302 // Initialize result type
1303 result->set_type(args->get_ret_type());
1305 // Invoke the method. Result is returned as oop.
1306 JavaCalls::call(result, method, &java_args, CHECK);
1308 // Convert result
1309 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1310 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1311 }
1312 }
1315 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1316 oop recv = JNIHandles::resolve(receiver);
1317 if (recv == NULL) {
1318 THROW(vmSymbols::java_lang_NullPointerException());
1319 }
1320 Handle h_recv(THREAD, recv);
1322 int number_of_parameters;
1323 Method* selected_method;
1324 {
1325 Method* m = Method::resolve_jmethod_id(method_id);
1326 number_of_parameters = m->size_of_parameters();
1327 Klass* holder = m->method_holder();
1328 if (call_type != JNI_VIRTUAL) {
1329 selected_method = m;
1330 } else if (!m->has_itable_index()) {
1331 // non-interface call -- for that little speed boost, don't handlize
1332 debug_only(No_Safepoint_Verifier nosafepoint;)
1333 // jni_GetMethodID makes sure class is linked and initialized
1334 // so m should have a valid vtable index.
1335 assert(m->valid_vtable_index(), "no valid vtable index");
1336 int vtbl_index = m->vtable_index();
1337 if (vtbl_index != Method::nonvirtual_vtable_index) {
1338 Klass* k = h_recv->klass();
1339 // k might be an arrayKlassOop but all vtables start at
1340 // the same place. The cast is to avoid virtual call and assertion.
1341 InstanceKlass *ik = (InstanceKlass*)k;
1342 selected_method = ik->method_at_vtable(vtbl_index);
1343 } else {
1344 // final method
1345 selected_method = m;
1346 }
1347 } else {
1348 // interface call
1349 KlassHandle h_holder(THREAD, holder);
1351 int itbl_index = m->itable_index();
1352 Klass* k = h_recv->klass();
1353 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1354 }
1355 }
1357 methodHandle method(THREAD, selected_method);
1359 // Create object to hold arguments for the JavaCall, and associate it with
1360 // the jni parser
1361 ResourceMark rm(THREAD);
1362 JavaCallArguments java_args(number_of_parameters);
1363 args->set_java_argument_object(&java_args);
1365 // handle arguments
1366 assert(!method->is_static(), "method should not be static");
1367 args->push_receiver(h_recv); // Push jobject handle
1369 // Fill out JavaCallArguments object
1370 args->iterate( Fingerprinter(method).fingerprint() );
1371 // Initialize result type
1372 result->set_type(args->get_ret_type());
1374 // Invoke the method. Result is returned as oop.
1375 JavaCalls::call(result, method, &java_args, CHECK);
1377 // Convert result
1378 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1379 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1380 }
1381 }
1384 static instanceOop alloc_object(jclass clazz, TRAPS) {
1385 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1386 k()->check_valid_for_instantiation(false, CHECK_NULL);
1387 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1388 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1389 return ih;
1390 }
1392 #ifndef USDT2
1393 DT_RETURN_MARK_DECL(AllocObject, jobject);
1394 #else /* USDT2 */
1395 DT_RETURN_MARK_DECL(AllocObject, jobject
1396 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1397 #endif /* USDT2 */
1399 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1400 JNIWrapper("AllocObject");
1402 #ifndef USDT2
1403 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1404 #else /* USDT2 */
1405 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1406 env, clazz);
1407 #endif /* USDT2 */
1408 jobject ret = NULL;
1409 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1411 instanceOop i = alloc_object(clazz, CHECK_NULL);
1412 ret = JNIHandles::make_local(env, i);
1413 return ret;
1414 JNI_END
1416 #ifndef USDT2
1417 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1418 #else /* USDT2 */
1419 DT_RETURN_MARK_DECL(NewObjectA, jobject
1420 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1421 #endif /* USDT2 */
1423 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1424 JNIWrapper("NewObjectA");
1425 #ifndef USDT2
1426 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1427 #else /* USDT2 */
1428 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1429 env, clazz, (uintptr_t) methodID);
1430 #endif /* USDT2 */
1431 jobject obj = NULL;
1432 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1434 instanceOop i = alloc_object(clazz, CHECK_NULL);
1435 obj = JNIHandles::make_local(env, i);
1436 JavaValue jvalue(T_VOID);
1437 JNI_ArgumentPusherArray ap(methodID, args);
1438 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1439 return obj;
1440 JNI_END
1442 #ifndef USDT2
1443 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1444 #else /* USDT2 */
1445 DT_RETURN_MARK_DECL(NewObjectV, jobject
1446 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1447 #endif /* USDT2 */
1449 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1450 JNIWrapper("NewObjectV");
1451 #ifndef USDT2
1452 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1453 #else /* USDT2 */
1454 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1455 env, clazz, (uintptr_t) methodID);
1456 #endif /* USDT2 */
1457 jobject obj = NULL;
1458 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1460 instanceOop i = alloc_object(clazz, CHECK_NULL);
1461 obj = JNIHandles::make_local(env, i);
1462 JavaValue jvalue(T_VOID);
1463 JNI_ArgumentPusherVaArg ap(methodID, args);
1464 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1465 return obj;
1466 JNI_END
1468 #ifndef USDT2
1469 DT_RETURN_MARK_DECL(NewObject, jobject);
1470 #else /* USDT2 */
1471 DT_RETURN_MARK_DECL(NewObject, jobject
1472 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1473 #endif /* USDT2 */
1475 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1476 JNIWrapper("NewObject");
1477 #ifndef USDT2
1478 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1479 #else /* USDT2 */
1480 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1481 env, clazz, (uintptr_t) methodID);
1482 #endif /* USDT2 */
1483 jobject obj = NULL;
1484 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1486 instanceOop i = alloc_object(clazz, CHECK_NULL);
1487 obj = JNIHandles::make_local(env, i);
1488 va_list args;
1489 va_start(args, methodID);
1490 JavaValue jvalue(T_VOID);
1491 JNI_ArgumentPusherVaArg ap(methodID, args);
1492 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1493 va_end(args);
1494 return obj;
1495 JNI_END
1498 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1499 JNIWrapper("GetObjectClass");
1500 #ifndef USDT2
1501 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1502 #else /* USDT2 */
1503 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1504 env, obj);
1505 #endif /* USDT2 */
1506 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1507 jclass ret =
1508 (jclass) JNIHandles::make_local(env, k->java_mirror());
1509 #ifndef USDT2
1510 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1511 #else /* USDT2 */
1512 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1513 ret);
1514 #endif /* USDT2 */
1515 return ret;
1516 JNI_END
1518 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1519 JNIWrapper("IsInstanceOf");
1520 #ifndef USDT2
1521 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1522 #else /* USDT2 */
1523 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1524 env, obj, clazz);
1525 #endif /* USDT2 */
1526 jboolean ret = JNI_TRUE;
1527 if (obj != NULL) {
1528 ret = JNI_FALSE;
1529 Klass* k = java_lang_Class::as_Klass(
1530 JNIHandles::resolve_non_null(clazz));
1531 if (k != NULL) {
1532 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1533 }
1534 }
1535 #ifndef USDT2
1536 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1537 #else /* USDT2 */
1538 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1539 ret);
1540 #endif /* USDT2 */
1541 return ret;
1542 JNI_END
1545 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1546 const char *sig, bool is_static, TRAPS) {
1547 // %%%% This code should probably just call into a method in the LinkResolver
1548 //
1549 // The class should have been loaded (we have an instance of the class
1550 // passed in) so the method and signature should already be in the symbol
1551 // table. If they're not there, the method doesn't exist.
1552 const char *name_to_probe = (name_str == NULL)
1553 ? vmSymbols::object_initializer_name()->as_C_string()
1554 : name_str;
1555 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1556 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1558 if (name == NULL || signature == NULL) {
1559 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1560 }
1562 // Throw a NoSuchMethodError exception if we have an instance of a
1563 // primitive java.lang.Class
1564 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1565 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1566 }
1568 KlassHandle klass(THREAD,
1569 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1571 // Make sure class is linked and initialized before handing id's out to
1572 // Method*s.
1573 klass()->initialize(CHECK_NULL);
1575 Method* m;
1576 if (name == vmSymbols::object_initializer_name() ||
1577 name == vmSymbols::class_initializer_name()) {
1578 // Never search superclasses for constructors
1579 if (klass->oop_is_instance()) {
1580 m = InstanceKlass::cast(klass())->find_method(name, signature);
1581 } else {
1582 m = NULL;
1583 }
1584 } else {
1585 m = klass->lookup_method(name, signature);
1586 if (m == NULL && klass->oop_is_instance()) {
1587 m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);
1588 }
1589 }
1590 if (m == NULL || (m->is_static() != is_static)) {
1591 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1592 }
1593 return m->jmethod_id();
1594 }
1597 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1598 const char *name, const char *sig))
1599 JNIWrapper("GetMethodID");
1600 #ifndef USDT2
1601 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1602 #else /* USDT2 */
1603 HOTSPOT_JNI_GETMETHODID_ENTRY(
1604 env, clazz, (char *) name, (char *) sig);
1605 #endif /* USDT2 */
1606 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1607 #ifndef USDT2
1608 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1609 #else /* USDT2 */
1610 HOTSPOT_JNI_GETMETHODID_RETURN(
1611 (uintptr_t) ret);
1612 #endif /* USDT2 */
1613 return ret;
1614 JNI_END
1617 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1618 const char *name, const char *sig))
1619 JNIWrapper("GetStaticMethodID");
1620 #ifndef USDT2
1621 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1622 #else /* USDT2 */
1623 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1624 env, (char *) clazz, (char *) name, (char *)sig);
1625 #endif /* USDT2 */
1626 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1627 #ifndef USDT2
1628 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1629 #else /* USDT2 */
1630 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1631 (uintptr_t) ret);
1632 #endif /* USDT2 */
1633 return ret;
1634 JNI_END
1638 //
1639 // Calling Methods
1640 //
1642 #ifndef USDT2
1643 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1644 \
1645 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1646 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1647 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1648 \
1649 JNI_ENTRY(ResultType, \
1650 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1651 JNIWrapper("Call" XSTR(Result) "Method"); \
1652 \
1653 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1654 ResultType ret = 0;\
1655 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1656 (const ResultType&)ret);\
1657 \
1658 va_list args; \
1659 va_start(args, methodID); \
1660 JavaValue jvalue(Tag); \
1661 JNI_ArgumentPusherVaArg ap(methodID, args); \
1662 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1663 va_end(args); \
1664 ret = jvalue.get_##ResultType(); \
1665 return ret;\
1666 JNI_END \
1667 \
1668 \
1669 JNI_ENTRY(ResultType, \
1670 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1671 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1672 \
1673 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1674 ResultType ret = 0;\
1675 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1676 (const ResultType&)ret);\
1677 \
1678 JavaValue jvalue(Tag); \
1679 JNI_ArgumentPusherVaArg ap(methodID, args); \
1680 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1681 ret = jvalue.get_##ResultType(); \
1682 return ret;\
1683 JNI_END \
1684 \
1685 \
1686 JNI_ENTRY(ResultType, \
1687 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1688 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1689 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1690 ResultType ret = 0;\
1691 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1692 (const ResultType&)ret);\
1693 \
1694 JavaValue jvalue(Tag); \
1695 JNI_ArgumentPusherArray ap(methodID, args); \
1696 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1697 ret = jvalue.get_##ResultType(); \
1698 return ret;\
1699 JNI_END
1701 // the runtime type of subword integral basic types is integer
1702 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1703 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1704 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1705 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1707 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1708 DEFINE_CALLMETHOD(jint, Int, T_INT)
1709 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1710 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1711 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1713 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1714 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1715 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1717 #else /* USDT2 */
1719 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1720 , EntryProbe, ReturnProbe) \
1721 \
1722 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1723 , ReturnProbe); \
1724 \
1725 JNI_ENTRY(ResultType, \
1726 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1727 JNIWrapper("Call" XSTR(Result) "Method"); \
1728 \
1729 EntryProbe; \
1730 ResultType ret = 0;\
1731 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1732 (const ResultType&)ret);\
1733 \
1734 va_list args; \
1735 va_start(args, methodID); \
1736 JavaValue jvalue(Tag); \
1737 JNI_ArgumentPusherVaArg ap(methodID, args); \
1738 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1739 va_end(args); \
1740 ret = jvalue.get_##ResultType(); \
1741 return ret;\
1742 JNI_END
1744 // the runtime type of subword integral basic types is integer
1745 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1746 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1747 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1748 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1749 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1750 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1751 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1752 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1753 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1754 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1755 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1756 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1758 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1759 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1760 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1761 DEFINE_CALLMETHOD(jint, Int, T_INT,
1762 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1763 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1764 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1765 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1766 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1767 // Float and double probes don't return value because dtrace doesn't currently support it
1768 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1769 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1770 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1771 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1772 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1773 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1775 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1776 , EntryProbe, ReturnProbe) \
1777 \
1778 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1779 , ReturnProbe); \
1780 \
1781 JNI_ENTRY(ResultType, \
1782 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1783 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1784 \
1785 EntryProbe;\
1786 ResultType ret = 0;\
1787 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1788 (const ResultType&)ret);\
1789 \
1790 JavaValue jvalue(Tag); \
1791 JNI_ArgumentPusherVaArg ap(methodID, args); \
1792 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1793 ret = jvalue.get_##ResultType(); \
1794 return ret;\
1795 JNI_END
1797 // the runtime type of subword integral basic types is integer
1798 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1799 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1800 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1801 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1802 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1803 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1804 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1805 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1806 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1807 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1808 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1809 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1811 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1812 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1813 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1814 DEFINE_CALLMETHODV(jint, Int, T_INT,
1815 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1816 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1817 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1818 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1819 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1820 // Float and double probes don't return value because dtrace doesn't currently support it
1821 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1822 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1823 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1824 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1825 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1826 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1828 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1829 , EntryProbe, ReturnProbe) \
1830 \
1831 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1832 , ReturnProbe); \
1833 \
1834 JNI_ENTRY(ResultType, \
1835 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1836 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1837 EntryProbe; \
1838 ResultType ret = 0;\
1839 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1840 (const ResultType&)ret);\
1841 \
1842 JavaValue jvalue(Tag); \
1843 JNI_ArgumentPusherArray ap(methodID, args); \
1844 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1845 ret = jvalue.get_##ResultType(); \
1846 return ret;\
1847 JNI_END
1849 // the runtime type of subword integral basic types is integer
1850 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1851 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1852 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1853 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1854 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1855 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1856 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1857 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1858 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1859 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1860 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1861 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1863 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1864 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1865 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1866 DEFINE_CALLMETHODA(jint, Int, T_INT,
1867 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1868 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1869 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1870 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1871 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1872 // Float and double probes don't return value because dtrace doesn't currently support it
1873 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1874 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1875 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1876 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1877 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1878 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1880 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1881 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1882 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1884 #endif /* USDT2 */
1886 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1887 JNIWrapper("CallVoidMethod");
1888 #ifndef USDT2
1889 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1890 #else /* USDT2 */
1891 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1892 env, obj, (uintptr_t) methodID);
1893 #endif /* USDT2 */
1894 DT_VOID_RETURN_MARK(CallVoidMethod);
1896 va_list args;
1897 va_start(args, methodID);
1898 JavaValue jvalue(T_VOID);
1899 JNI_ArgumentPusherVaArg ap(methodID, args);
1900 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1901 va_end(args);
1902 JNI_END
1905 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1906 JNIWrapper("CallVoidMethodV");
1907 #ifndef USDT2
1908 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1909 #else /* USDT2 */
1910 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1911 env, obj, (uintptr_t) methodID);
1912 #endif /* USDT2 */
1913 DT_VOID_RETURN_MARK(CallVoidMethodV);
1915 JavaValue jvalue(T_VOID);
1916 JNI_ArgumentPusherVaArg ap(methodID, args);
1917 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1918 JNI_END
1921 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1922 JNIWrapper("CallVoidMethodA");
1923 #ifndef USDT2
1924 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1925 #else /* USDT2 */
1926 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1927 env, obj, (uintptr_t) methodID);
1928 #endif /* USDT2 */
1929 DT_VOID_RETURN_MARK(CallVoidMethodA);
1931 JavaValue jvalue(T_VOID);
1932 JNI_ArgumentPusherArray ap(methodID, args);
1933 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1934 JNI_END
1937 #ifndef USDT2
1938 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1939 \
1940 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1941 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1942 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1943 \
1944 JNI_ENTRY(ResultType, \
1945 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1946 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1947 \
1948 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1949 ResultType ret;\
1950 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1951 (const ResultType&)ret);\
1952 \
1953 va_list args; \
1954 va_start(args, methodID); \
1955 JavaValue jvalue(Tag); \
1956 JNI_ArgumentPusherVaArg ap(methodID, args); \
1957 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1958 va_end(args); \
1959 ret = jvalue.get_##ResultType(); \
1960 return ret;\
1961 JNI_END \
1962 \
1963 JNI_ENTRY(ResultType, \
1964 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1965 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
1966 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
1967 ResultType ret;\
1968 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1969 (const ResultType&)ret);\
1970 \
1971 JavaValue jvalue(Tag); \
1972 JNI_ArgumentPusherVaArg ap(methodID, args); \
1973 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1974 ret = jvalue.get_##ResultType(); \
1975 return ret;\
1976 JNI_END \
1977 \
1978 JNI_ENTRY(ResultType, \
1979 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1980 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1981 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
1982 ResultType ret;\
1983 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1984 (const ResultType&)ret);\
1985 \
1986 JavaValue jvalue(Tag); \
1987 JNI_ArgumentPusherArray ap(methodID, args); \
1988 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1989 ret = jvalue.get_##ResultType(); \
1990 return ret;\
1991 JNI_END
1993 // the runtime type of subword integral basic types is integer
1994 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
1995 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
1996 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
1997 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
1999 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2000 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2001 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2002 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2003 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2006 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2007 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2008 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2010 #else /* USDT2 */
2012 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2013 , EntryProbe, ReturnProbe) \
2014 \
2015 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2016 , ReturnProbe);\
2017 \
2018 JNI_ENTRY(ResultType, \
2019 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2020 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2021 \
2022 EntryProbe;\
2023 ResultType ret;\
2024 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2025 (const ResultType&)ret);\
2026 \
2027 va_list args; \
2028 va_start(args, methodID); \
2029 JavaValue jvalue(Tag); \
2030 JNI_ArgumentPusherVaArg ap(methodID, args); \
2031 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2032 va_end(args); \
2033 ret = jvalue.get_##ResultType(); \
2034 return ret;\
2035 JNI_END
2037 // the runtime type of subword integral basic types is integer
2038 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2039 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2040 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2041 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2042 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2043 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2044 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2045 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2046 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2047 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2048 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2049 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2051 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2052 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2053 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2054 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2055 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2056 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2057 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2058 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2059 // Float and double probes don't return value because dtrace doesn't currently support it
2060 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2061 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2062 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2063 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2064 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2065 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2066 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2068 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2069 , EntryProbe, ReturnProbe) \
2070 \
2071 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2072 , ReturnProbe);\
2073 \
2074 JNI_ENTRY(ResultType, \
2075 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2076 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2077 \
2078 EntryProbe;\
2079 ResultType ret;\
2080 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2081 (const ResultType&)ret);\
2082 \
2083 JavaValue jvalue(Tag); \
2084 JNI_ArgumentPusherVaArg ap(methodID, args); \
2085 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2086 ret = jvalue.get_##ResultType(); \
2087 return ret;\
2088 JNI_END
2090 // the runtime type of subword integral basic types is integer
2091 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2092 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2093 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2094 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2095 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2096 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2097 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2098 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2099 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2100 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2101 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2102 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2104 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2105 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2106 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2107 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2108 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2109 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2110 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2111 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2112 // Float and double probes don't return value because dtrace doesn't currently support it
2113 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2114 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2115 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2116 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2117 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2118 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2119 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2121 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2122 , EntryProbe, ReturnProbe) \
2123 \
2124 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2125 , ReturnProbe);\
2126 \
2127 JNI_ENTRY(ResultType, \
2128 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2129 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2130 \
2131 EntryProbe;\
2132 ResultType ret;\
2133 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2134 (const ResultType&)ret);\
2135 \
2136 JavaValue jvalue(Tag); \
2137 JNI_ArgumentPusherArray ap(methodID, args); \
2138 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2139 ret = jvalue.get_##ResultType(); \
2140 return ret;\
2141 JNI_END
2143 // the runtime type of subword integral basic types is integer
2144 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2145 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2146 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2147 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2148 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2149 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2150 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2151 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2152 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2153 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2154 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2155 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2157 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2158 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2159 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2160 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2161 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2162 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2163 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2164 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2165 // Float and double probes don't return value because dtrace doesn't currently support it
2166 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2167 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2168 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2169 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2170 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2171 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2172 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2174 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2175 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2176 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2177 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2178 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2179 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2180 #endif /* USDT2 */
2182 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2183 JNIWrapper("CallNonvirtualVoidMethod");
2185 #ifndef USDT2
2186 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2187 env, obj, cls, methodID);
2188 #else /* USDT2 */
2189 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2190 env, obj, cls, (uintptr_t) methodID);
2191 #endif /* USDT2 */
2192 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2194 va_list args;
2195 va_start(args, methodID);
2196 JavaValue jvalue(T_VOID);
2197 JNI_ArgumentPusherVaArg ap(methodID, args);
2198 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2199 va_end(args);
2200 JNI_END
2203 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2204 JNIWrapper("CallNonvirtualVoidMethodV");
2206 #ifndef USDT2
2207 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2208 env, obj, cls, methodID);
2209 #else /* USDT2 */
2210 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2211 env, obj, cls, (uintptr_t) methodID);
2212 #endif /* USDT2 */
2213 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2215 JavaValue jvalue(T_VOID);
2216 JNI_ArgumentPusherVaArg ap(methodID, args);
2217 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2218 JNI_END
2221 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2222 JNIWrapper("CallNonvirtualVoidMethodA");
2223 #ifndef USDT2
2224 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2225 env, obj, cls, methodID);
2226 #else /* USDT2 */
2227 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2228 env, obj, cls, (uintptr_t) methodID);
2229 #endif /* USDT2 */
2230 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2231 JavaValue jvalue(T_VOID);
2232 JNI_ArgumentPusherArray ap(methodID, args);
2233 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2234 JNI_END
2237 #ifndef USDT2
2238 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2239 \
2240 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2241 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2242 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2243 \
2244 JNI_ENTRY(ResultType, \
2245 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2246 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2247 \
2248 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2249 ResultType ret = 0;\
2250 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2251 (const ResultType&)ret);\
2252 \
2253 va_list args; \
2254 va_start(args, methodID); \
2255 JavaValue jvalue(Tag); \
2256 JNI_ArgumentPusherVaArg ap(methodID, args); \
2257 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2258 va_end(args); \
2259 ret = jvalue.get_##ResultType(); \
2260 return ret;\
2261 JNI_END \
2262 \
2263 JNI_ENTRY(ResultType, \
2264 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2265 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2266 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2267 ResultType ret = 0;\
2268 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2269 (const ResultType&)ret);\
2270 \
2271 JavaValue jvalue(Tag); \
2272 JNI_ArgumentPusherVaArg ap(methodID, args); \
2273 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2274 ret = jvalue.get_##ResultType(); \
2275 return ret;\
2276 JNI_END \
2277 \
2278 JNI_ENTRY(ResultType, \
2279 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2280 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2281 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2282 ResultType ret = 0;\
2283 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2284 (const ResultType&)ret);\
2285 \
2286 JavaValue jvalue(Tag); \
2287 JNI_ArgumentPusherArray ap(methodID, args); \
2288 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2289 ret = jvalue.get_##ResultType(); \
2290 return ret;\
2291 JNI_END
2293 // the runtime type of subword integral basic types is integer
2294 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2295 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2296 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2297 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2299 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2300 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2301 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2302 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2303 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2306 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2307 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2308 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2310 #else /* USDT2 */
2312 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2313 , EntryProbe, ResultProbe) \
2314 \
2315 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2316 , ResultProbe); \
2317 \
2318 JNI_ENTRY(ResultType, \
2319 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2320 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2321 \
2322 EntryProbe; \
2323 ResultType ret = 0;\
2324 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2325 (const ResultType&)ret);\
2326 \
2327 va_list args; \
2328 va_start(args, methodID); \
2329 JavaValue jvalue(Tag); \
2330 JNI_ArgumentPusherVaArg ap(methodID, args); \
2331 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2332 va_end(args); \
2333 ret = jvalue.get_##ResultType(); \
2334 return ret;\
2335 JNI_END
2337 // the runtime type of subword integral basic types is integer
2338 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2339 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2340 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2341 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2342 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2343 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2344 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2345 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2346 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2347 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2348 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2349 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2351 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2352 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2353 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2354 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2355 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2356 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2357 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2358 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2359 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2360 // Float and double probes don't return value because dtrace doesn't currently support it
2361 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2362 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2363 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2364 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2365 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2366 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2368 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2369 , EntryProbe, ResultProbe) \
2370 \
2371 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2372 , ResultProbe); \
2373 \
2374 JNI_ENTRY(ResultType, \
2375 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2376 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2377 \
2378 EntryProbe; \
2379 ResultType ret = 0;\
2380 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2381 (const ResultType&)ret);\
2382 \
2383 JavaValue jvalue(Tag); \
2384 JNI_ArgumentPusherVaArg ap(methodID, args); \
2385 /* Make sure class is initialized before trying to invoke its method */ \
2386 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2387 k()->initialize(CHECK_0); \
2388 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2389 va_end(args); \
2390 ret = jvalue.get_##ResultType(); \
2391 return ret;\
2392 JNI_END
2394 // the runtime type of subword integral basic types is integer
2395 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2396 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2397 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2398 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2399 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2400 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2401 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2402 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2403 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2404 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2405 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2406 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2408 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2409 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2410 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2411 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2412 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2413 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2414 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2415 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2416 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2417 // Float and double probes don't return value because dtrace doesn't currently support it
2418 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2419 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2420 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2421 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2422 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2423 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2425 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2426 , EntryProbe, ResultProbe) \
2427 \
2428 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2429 , ResultProbe); \
2430 \
2431 JNI_ENTRY(ResultType, \
2432 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2433 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2434 \
2435 EntryProbe; \
2436 ResultType ret = 0;\
2437 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2438 (const ResultType&)ret);\
2439 \
2440 JavaValue jvalue(Tag); \
2441 JNI_ArgumentPusherArray ap(methodID, args); \
2442 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2443 ret = jvalue.get_##ResultType(); \
2444 return ret;\
2445 JNI_END
2447 // the runtime type of subword integral basic types is integer
2448 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2449 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2450 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2451 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2452 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2453 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2454 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2455 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2456 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2457 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2458 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2459 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2461 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2462 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2463 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2464 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2465 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2466 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2467 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2468 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2469 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2470 // Float and double probes don't return value because dtrace doesn't currently support it
2471 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2472 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2473 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2474 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2475 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2476 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2478 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2479 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2480 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2481 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2482 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2483 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2484 #endif /* USDT2 */
2486 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2487 JNIWrapper("CallStaticVoidMethod");
2488 #ifndef USDT2
2489 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2490 #else /* USDT2 */
2491 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2492 env, cls, (uintptr_t) methodID);
2493 #endif /* USDT2 */
2494 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2496 va_list args;
2497 va_start(args, methodID);
2498 JavaValue jvalue(T_VOID);
2499 JNI_ArgumentPusherVaArg ap(methodID, args);
2500 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2501 va_end(args);
2502 JNI_END
2505 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2506 JNIWrapper("CallStaticVoidMethodV");
2507 #ifndef USDT2
2508 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2509 #else /* USDT2 */
2510 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2511 env, cls, (uintptr_t) methodID);
2512 #endif /* USDT2 */
2513 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2515 JavaValue jvalue(T_VOID);
2516 JNI_ArgumentPusherVaArg ap(methodID, args);
2517 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2518 JNI_END
2521 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2522 JNIWrapper("CallStaticVoidMethodA");
2523 #ifndef USDT2
2524 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2525 #else /* USDT2 */
2526 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2527 env, cls, (uintptr_t) methodID);
2528 #endif /* USDT2 */
2529 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2531 JavaValue jvalue(T_VOID);
2532 JNI_ArgumentPusherArray ap(methodID, args);
2533 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2534 JNI_END
2537 //
2538 // Accessing Fields
2539 //
2542 #ifndef USDT2
2543 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2544 #else /* USDT2 */
2545 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2546 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2547 #endif /* USDT2 */
2549 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2550 const char *name, const char *sig))
2551 JNIWrapper("GetFieldID");
2552 #ifndef USDT2
2553 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2554 #else /* USDT2 */
2555 HOTSPOT_JNI_GETFIELDID_ENTRY(
2556 env, clazz, (char *) name, (char *) sig);
2557 #endif /* USDT2 */
2558 jfieldID ret = 0;
2559 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2561 // The class should have been loaded (we have an instance of the class
2562 // passed in) so the field and signature should already be in the symbol
2563 // table. If they're not there, the field doesn't exist.
2564 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2565 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2566 if (fieldname == NULL || signame == NULL) {
2567 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2568 }
2569 KlassHandle k(THREAD,
2570 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2571 // Make sure class is initialized before handing id's out to fields
2572 k()->initialize(CHECK_NULL);
2574 fieldDescriptor fd;
2575 if (!k()->oop_is_instance() ||
2576 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2577 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2578 }
2580 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2581 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2582 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2583 return ret;
2584 JNI_END
2587 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2588 JNIWrapper("GetObjectField");
2589 #ifndef USDT2
2590 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2591 #else /* USDT2 */
2592 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2593 env, obj, (uintptr_t) fieldID);
2594 #endif /* USDT2 */
2595 oop o = JNIHandles::resolve_non_null(obj);
2596 Klass* k = o->klass();
2597 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2598 // Keep JVMTI addition small and only check enabled flag here.
2599 // jni_GetField_probe() assumes that is okay to create handles.
2600 if (JvmtiExport::should_post_field_access()) {
2601 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2602 }
2603 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2604 #if INCLUDE_ALL_GCS
2605 // If G1 is enabled and we are accessing the value of the referent
2606 // field in a reference object then we need to register a non-null
2607 // referent with the SATB barrier.
2608 if (UseG1GC) {
2609 bool needs_barrier = false;
2611 if (ret != NULL &&
2612 offset == java_lang_ref_Reference::referent_offset &&
2613 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2614 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2615 needs_barrier = true;
2616 }
2618 if (needs_barrier) {
2619 oop referent = JNIHandles::resolve(ret);
2620 G1SATBCardTableModRefBS::enqueue(referent);
2621 }
2622 }
2623 #endif // INCLUDE_ALL_GCS
2624 #ifndef USDT2
2625 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2626 #else /* USDT2 */
2627 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2628 ret);
2629 #endif /* USDT2 */
2630 return ret;
2631 JNI_END
2634 #ifndef USDT2
2635 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2636 \
2637 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2638 \
2639 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2640 JNIWrapper("Get" XSTR(Result) "Field"); \
2641 \
2642 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2643 Return ret = 0;\
2644 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2645 \
2646 oop o = JNIHandles::resolve_non_null(obj); \
2647 Klass* k = o->klass(); \
2648 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2649 /* Keep JVMTI addition small and only check enabled flag here. */ \
2650 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2651 /* and creates a ResetNoHandleMark. */ \
2652 if (JvmtiExport::should_post_field_access()) { \
2653 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2654 } \
2655 ret = o->Fieldname##_field(offset); \
2656 return ret; \
2657 JNI_END
2659 DEFINE_GETFIELD(jboolean, bool, Boolean)
2660 DEFINE_GETFIELD(jbyte, byte, Byte)
2661 DEFINE_GETFIELD(jchar, char, Char)
2662 DEFINE_GETFIELD(jshort, short, Short)
2663 DEFINE_GETFIELD(jint, int, Int)
2664 DEFINE_GETFIELD(jlong, long, Long)
2665 DEFINE_GETFIELD(jfloat, float, Float)
2666 DEFINE_GETFIELD(jdouble, double, Double)
2668 #else /* USDT2 */
2670 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2671 , EntryProbe, ReturnProbe) \
2672 \
2673 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2674 , ReturnProbe); \
2675 \
2676 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2677 JNIWrapper("Get" XSTR(Result) "Field"); \
2678 \
2679 EntryProbe; \
2680 Return ret = 0;\
2681 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2682 \
2683 oop o = JNIHandles::resolve_non_null(obj); \
2684 Klass* k = o->klass(); \
2685 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2686 /* Keep JVMTI addition small and only check enabled flag here. */ \
2687 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2688 /* and creates a ResetNoHandleMark. */ \
2689 if (JvmtiExport::should_post_field_access()) { \
2690 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2691 } \
2692 ret = o->Fieldname##_field(offset); \
2693 return ret; \
2694 JNI_END
2696 DEFINE_GETFIELD(jboolean, bool, Boolean
2697 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2698 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2699 DEFINE_GETFIELD(jbyte, byte, Byte
2700 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2701 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2702 DEFINE_GETFIELD(jchar, char, Char
2703 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2704 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2705 DEFINE_GETFIELD(jshort, short, Short
2706 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2707 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2708 DEFINE_GETFIELD(jint, int, Int
2709 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2710 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2711 DEFINE_GETFIELD(jlong, long, Long
2712 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2713 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2714 // Float and double probes don't return value because dtrace doesn't currently support it
2715 DEFINE_GETFIELD(jfloat, float, Float
2716 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2717 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2718 DEFINE_GETFIELD(jdouble, double, Double
2719 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2720 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2721 #endif /* USDT2 */
2723 address jni_GetBooleanField_addr() {
2724 return (address)jni_GetBooleanField;
2725 }
2726 address jni_GetByteField_addr() {
2727 return (address)jni_GetByteField;
2728 }
2729 address jni_GetCharField_addr() {
2730 return (address)jni_GetCharField;
2731 }
2732 address jni_GetShortField_addr() {
2733 return (address)jni_GetShortField;
2734 }
2735 address jni_GetIntField_addr() {
2736 return (address)jni_GetIntField;
2737 }
2738 address jni_GetLongField_addr() {
2739 return (address)jni_GetLongField;
2740 }
2741 address jni_GetFloatField_addr() {
2742 return (address)jni_GetFloatField;
2743 }
2744 address jni_GetDoubleField_addr() {
2745 return (address)jni_GetDoubleField;
2746 }
2748 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2749 JNIWrapper("SetObjectField");
2750 #ifndef USDT2
2751 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2752 #else /* USDT2 */
2753 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2754 env, obj, (uintptr_t) fieldID, value);
2755 #endif /* USDT2 */
2756 oop o = JNIHandles::resolve_non_null(obj);
2757 Klass* k = o->klass();
2758 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2759 // Keep JVMTI addition small and only check enabled flag here.
2760 // jni_SetField_probe_nh() assumes that is not okay to create handles
2761 // and creates a ResetNoHandleMark.
2762 if (JvmtiExport::should_post_field_modification()) {
2763 jvalue field_value;
2764 field_value.l = value;
2765 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2766 }
2767 o->obj_field_put(offset, JNIHandles::resolve(value));
2768 #ifndef USDT2
2769 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2770 #else /* USDT2 */
2771 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2772 );
2773 #endif /* USDT2 */
2774 JNI_END
2776 #ifndef USDT2
2777 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2778 \
2779 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2780 JNIWrapper("Set" XSTR(Result) "Field"); \
2781 \
2782 FP_SELECT_##Result( \
2783 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2784 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2785 \
2786 oop o = JNIHandles::resolve_non_null(obj); \
2787 Klass* k = o->klass(); \
2788 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2789 /* Keep JVMTI addition small and only check enabled flag here. */ \
2790 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2791 /* and creates a ResetNoHandleMark. */ \
2792 if (JvmtiExport::should_post_field_modification()) { \
2793 jvalue field_value; \
2794 field_value.unionType = value; \
2795 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2796 } \
2797 o->Fieldname##_field_put(offset, value); \
2798 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2799 JNI_END
2801 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2802 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2803 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2804 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2805 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2806 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2807 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2808 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2810 #else /* USDT2 */
2812 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2813 , EntryProbe, ReturnProbe) \
2814 \
2815 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2816 JNIWrapper("Set" XSTR(Result) "Field"); \
2817 \
2818 EntryProbe; \
2819 \
2820 oop o = JNIHandles::resolve_non_null(obj); \
2821 Klass* k = o->klass(); \
2822 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2823 /* Keep JVMTI addition small and only check enabled flag here. */ \
2824 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2825 /* and creates a ResetNoHandleMark. */ \
2826 if (JvmtiExport::should_post_field_modification()) { \
2827 jvalue field_value; \
2828 field_value.unionType = value; \
2829 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2830 } \
2831 o->Fieldname##_field_put(offset, value); \
2832 ReturnProbe; \
2833 JNI_END
2835 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2836 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2837 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2838 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2839 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2840 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2841 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2842 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2843 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2844 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2845 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2846 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2847 DEFINE_SETFIELD(jint, int, Int, 'I', i
2848 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2849 HOTSPOT_JNI_SETINTFIELD_RETURN())
2850 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2851 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2852 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2853 // Float and double probes don't return value because dtrace doesn't currently support it
2854 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2855 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2856 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2857 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2858 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2859 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2860 #endif /* USDT2 */
2862 #ifndef USDT2
2863 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2864 #else /* USDT2 */
2865 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2866 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2867 #endif /* USDT2 */
2869 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2870 JNIWrapper("ToReflectedField");
2871 #ifndef USDT2
2872 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2873 env, cls, fieldID, isStatic);
2874 #else /* USDT2 */
2875 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2876 env, cls, (uintptr_t) fieldID, isStatic);
2877 #endif /* USDT2 */
2878 jobject ret = NULL;
2879 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2881 fieldDescriptor fd;
2882 bool found = false;
2883 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2885 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2887 if (isStatic) {
2888 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2889 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2890 assert(id->is_static_field_id(), "invalid static field id");
2891 found = id->find_local_field(&fd);
2892 } else {
2893 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2894 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2895 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2896 }
2897 assert(found, "bad fieldID passed into jni_ToReflectedField");
2898 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2899 ret = JNIHandles::make_local(env, reflected);
2900 return ret;
2901 JNI_END
2904 //
2905 // Accessing Static Fields
2906 //
2907 #ifndef USDT2
2908 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2909 #else /* USDT2 */
2910 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2911 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2912 #endif /* USDT2 */
2914 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2915 const char *name, const char *sig))
2916 JNIWrapper("GetStaticFieldID");
2917 #ifndef USDT2
2918 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2919 #else /* USDT2 */
2920 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2921 env, clazz, (char *) name, (char *) sig);
2922 #endif /* USDT2 */
2923 jfieldID ret = NULL;
2924 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2926 // The class should have been loaded (we have an instance of the class
2927 // passed in) so the field and signature should already be in the symbol
2928 // table. If they're not there, the field doesn't exist.
2929 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2930 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2931 if (fieldname == NULL || signame == NULL) {
2932 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2933 }
2934 KlassHandle k(THREAD,
2935 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2936 // Make sure class is initialized before handing id's out to static fields
2937 k()->initialize(CHECK_NULL);
2939 fieldDescriptor fd;
2940 if (!k()->oop_is_instance() ||
2941 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2942 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2943 }
2945 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2946 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2947 debug_only(id->set_is_static_field_id();)
2949 debug_only(id->verify(fd.field_holder()));
2951 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2952 return ret;
2953 JNI_END
2956 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2957 JNIWrapper("GetStaticObjectField");
2958 #ifndef USDT2
2959 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
2960 #else /* USDT2 */
2961 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
2962 env, clazz, (uintptr_t) fieldID);
2963 #endif /* USDT2 */
2964 #if INCLUDE_JNI_CHECK
2965 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2966 #endif // INCLUDE_JNI_CHECK
2967 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2968 assert(id->is_static_field_id(), "invalid static field id");
2969 // Keep JVMTI addition small and only check enabled flag here.
2970 // jni_GetField_probe() assumes that is okay to create handles.
2971 if (JvmtiExport::should_post_field_access()) {
2972 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2973 }
2974 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2975 #ifndef USDT2
2976 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
2977 #else /* USDT2 */
2978 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
2979 ret);
2980 #endif /* USDT2 */
2981 return ret;
2982 JNI_END
2984 #ifndef USDT2
2985 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
2986 \
2987 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
2988 \
2989 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
2990 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
2991 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
2992 Return ret = 0;\
2993 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
2994 (const Return&)ret);\
2995 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
2996 assert(id->is_static_field_id(), "invalid static field id"); \
2997 /* Keep JVMTI addition small and only check enabled flag here. */ \
2998 /* jni_GetField_probe() assumes that is okay to create handles. */ \
2999 if (JvmtiExport::should_post_field_access()) { \
3000 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3001 } \
3002 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3003 return ret;\
3004 JNI_END
3006 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3007 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3008 DEFINE_GETSTATICFIELD(jchar, char, Char)
3009 DEFINE_GETSTATICFIELD(jshort, short, Short)
3010 DEFINE_GETSTATICFIELD(jint, int, Int)
3011 DEFINE_GETSTATICFIELD(jlong, long, Long)
3012 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3013 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3015 #else /* USDT2 */
3017 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3018 , EntryProbe, ReturnProbe) \
3019 \
3020 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3021 , ReturnProbe); \
3022 \
3023 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3024 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3025 EntryProbe; \
3026 Return ret = 0;\
3027 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3028 (const Return&)ret);\
3029 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3030 assert(id->is_static_field_id(), "invalid static field id"); \
3031 /* Keep JVMTI addition small and only check enabled flag here. */ \
3032 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3033 if (JvmtiExport::should_post_field_access()) { \
3034 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3035 } \
3036 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3037 return ret;\
3038 JNI_END
3040 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3041 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3042 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3043 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3044 DEFINE_GETSTATICFIELD(jchar, char, Char
3045 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3046 DEFINE_GETSTATICFIELD(jshort, short, Short
3047 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3048 DEFINE_GETSTATICFIELD(jint, int, Int
3049 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3050 DEFINE_GETSTATICFIELD(jlong, long, Long
3051 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3052 // Float and double probes don't return value because dtrace doesn't currently support it
3053 DEFINE_GETSTATICFIELD(jfloat, float, Float
3054 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3055 DEFINE_GETSTATICFIELD(jdouble, double, Double
3056 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3057 #endif /* USDT2 */
3059 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3060 JNIWrapper("SetStaticObjectField");
3061 #ifndef USDT2
3062 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3063 #else /* USDT2 */
3064 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3065 env, clazz, (uintptr_t) fieldID, value);
3066 #endif /* USDT2 */
3067 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3068 assert(id->is_static_field_id(), "invalid static field id");
3069 // Keep JVMTI addition small and only check enabled flag here.
3070 // jni_SetField_probe() assumes that is okay to create handles.
3071 if (JvmtiExport::should_post_field_modification()) {
3072 jvalue field_value;
3073 field_value.l = value;
3074 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3075 }
3076 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3077 #ifndef USDT2
3078 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3079 #else /* USDT2 */
3080 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3081 );
3082 #endif /* USDT2 */
3083 JNI_END
3086 #ifndef USDT2
3087 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3088 \
3089 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3090 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3091 FP_SELECT_##Result( \
3092 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3093 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3094 \
3095 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3096 assert(id->is_static_field_id(), "invalid static field id"); \
3097 /* Keep JVMTI addition small and only check enabled flag here. */ \
3098 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3099 if (JvmtiExport::should_post_field_modification()) { \
3100 jvalue field_value; \
3101 field_value.unionType = value; \
3102 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3103 } \
3104 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3105 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3106 JNI_END
3108 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3109 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3110 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3111 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3112 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3113 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3114 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3115 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3117 #else /* USDT2 */
3119 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3120 , EntryProbe, ReturnProbe) \
3121 \
3122 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3123 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3124 EntryProbe; \
3125 \
3126 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3127 assert(id->is_static_field_id(), "invalid static field id"); \
3128 /* Keep JVMTI addition small and only check enabled flag here. */ \
3129 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3130 if (JvmtiExport::should_post_field_modification()) { \
3131 jvalue field_value; \
3132 field_value.unionType = value; \
3133 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3134 } \
3135 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3136 ReturnProbe;\
3137 JNI_END
3139 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3140 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3141 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3142 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3143 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3144 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3145 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3146 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3147 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3148 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3149 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3150 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3151 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3152 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3153 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3154 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3155 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3156 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3157 // Float and double probes don't return value because dtrace doesn't currently support it
3158 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3159 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3160 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3161 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3162 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3163 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3164 #endif /* USDT2 */
3166 //
3167 // String Operations
3168 //
3170 // Unicode Interface
3172 #ifndef USDT2
3173 DT_RETURN_MARK_DECL(NewString, jstring);
3174 #else /* USDT2 */
3175 DT_RETURN_MARK_DECL(NewString, jstring
3176 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3177 #endif /* USDT2 */
3179 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3180 JNIWrapper("NewString");
3181 #ifndef USDT2
3182 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3183 #else /* USDT2 */
3184 HOTSPOT_JNI_NEWSTRING_ENTRY(
3185 env, (uint16_t *) unicodeChars, len);
3186 #endif /* USDT2 */
3187 jstring ret = NULL;
3188 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3189 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3190 ret = (jstring) JNIHandles::make_local(env, string);
3191 return ret;
3192 JNI_END
3195 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3196 JNIWrapper("GetStringLength");
3197 #ifndef USDT2
3198 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3199 #else /* USDT2 */
3200 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3201 env, string);
3202 #endif /* USDT2 */
3203 jsize ret = 0;
3204 oop s = JNIHandles::resolve_non_null(string);
3205 if (java_lang_String::value(s) != NULL) {
3206 ret = java_lang_String::length(s);
3207 }
3208 #ifndef USDT2
3209 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3210 #else /* USDT2 */
3211 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3212 ret);
3213 #endif /* USDT2 */
3214 return ret;
3215 JNI_END
3218 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3219 JNIEnv *env, jstring string, jboolean *isCopy))
3220 JNIWrapper("GetStringChars");
3221 #ifndef USDT2
3222 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3223 #else /* USDT2 */
3224 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3225 env, string, (uintptr_t *) isCopy);
3226 #endif /* USDT2 */
3227 jchar* buf = NULL;
3228 oop s = JNIHandles::resolve_non_null(string);
3229 typeArrayOop s_value = java_lang_String::value(s);
3230 if (s_value != NULL) {
3231 int s_len = java_lang_String::length(s);
3232 int s_offset = java_lang_String::offset(s);
3233 buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination
3234 /* JNI Specification states return NULL on OOM */
3235 if (buf != NULL) {
3236 if (s_len > 0) {
3237 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3238 }
3239 buf[s_len] = 0;
3240 //%note jni_5
3241 if (isCopy != NULL) {
3242 *isCopy = JNI_TRUE;
3243 }
3244 }
3245 }
3246 #ifndef USDT2
3247 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3248 #else /* USDT2 */
3249 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3250 buf);
3251 #endif /* USDT2 */
3252 return buf;
3253 JNI_END
3256 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3257 JNIWrapper("ReleaseStringChars");
3258 #ifndef USDT2
3259 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3260 #else /* USDT2 */
3261 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3262 env, str, (uint16_t *) chars);
3263 #endif /* USDT2 */
3264 //%note jni_6
3265 if (chars != NULL) {
3266 // Since String objects are supposed to be immutable, don't copy any
3267 // new data back. A bad user will have to go after the char array.
3268 FreeHeap((void*) chars);
3269 }
3270 #ifndef USDT2
3271 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3272 #else /* USDT2 */
3273 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3274 );
3275 #endif /* USDT2 */
3276 JNI_END
3279 // UTF Interface
3281 #ifndef USDT2
3282 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3283 #else /* USDT2 */
3284 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3285 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3286 #endif /* USDT2 */
3288 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3289 JNIWrapper("NewStringUTF");
3290 #ifndef USDT2
3291 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3292 #else /* USDT2 */
3293 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3294 env, (char *) bytes);
3295 #endif /* USDT2 */
3296 jstring ret;
3297 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3299 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3300 ret = (jstring) JNIHandles::make_local(env, result);
3301 return ret;
3302 JNI_END
3305 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3306 JNIWrapper("GetStringUTFLength");
3307 #ifndef USDT2
3308 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3309 #else /* USDT2 */
3310 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3311 env, string);
3312 #endif /* USDT2 */
3313 jsize ret = 0;
3314 oop java_string = JNIHandles::resolve_non_null(string);
3315 if (java_lang_String::value(java_string) != NULL) {
3316 ret = java_lang_String::utf8_length(java_string);
3317 }
3318 #ifndef USDT2
3319 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3320 #else /* USDT2 */
3321 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3322 ret);
3323 #endif /* USDT2 */
3324 return ret;
3325 JNI_END
3328 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3329 JNIWrapper("GetStringUTFChars");
3330 #ifndef USDT2
3331 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3332 #else /* USDT2 */
3333 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3334 env, string, (uintptr_t *) isCopy);
3335 #endif /* USDT2 */
3336 char* result = NULL;
3337 oop java_string = JNIHandles::resolve_non_null(string);
3338 if (java_lang_String::value(java_string) != NULL) {
3339 size_t length = java_lang_String::utf8_length(java_string);
3340 /* JNI Specification states return NULL on OOM */
3341 result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
3342 if (result != NULL) {
3343 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3344 if (isCopy != NULL) {
3345 *isCopy = JNI_TRUE;
3346 }
3347 }
3348 }
3349 #ifndef USDT2
3350 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3351 #else /* USDT2 */
3352 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3353 result);
3354 #endif /* USDT2 */
3355 return result;
3356 JNI_END
3359 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3360 JNIWrapper("ReleaseStringUTFChars");
3361 #ifndef USDT2
3362 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3363 #else /* USDT2 */
3364 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3365 env, str, (char *) chars);
3366 #endif /* USDT2 */
3367 if (chars != NULL) {
3368 FreeHeap((char*) chars);
3369 }
3370 #ifndef USDT2
3371 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3372 #else /* USDT2 */
3373 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3374 );
3375 #endif /* USDT2 */
3376 JNI_END
3379 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3380 JNIWrapper("GetArrayLength");
3381 #ifndef USDT2
3382 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3383 #else /* USDT2 */
3384 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3385 env, array);
3386 #endif /* USDT2 */
3387 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3388 assert(a->is_array(), "must be array");
3389 jsize ret = a->length();
3390 #ifndef USDT2
3391 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3392 #else /* USDT2 */
3393 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3394 ret);
3395 #endif /* USDT2 */
3396 return ret;
3397 JNI_END
3400 //
3401 // Object Array Operations
3402 //
3404 #ifndef USDT2
3405 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3406 #else /* USDT2 */
3407 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3408 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3409 #endif /* USDT2 */
3411 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3412 JNIWrapper("NewObjectArray");
3413 #ifndef USDT2
3414 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3415 #else /* USDT2 */
3416 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3417 env, length, elementClass, initialElement);
3418 #endif /* USDT2 */
3419 jobjectArray ret = NULL;
3420 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3421 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3422 Klass* ako = ek()->array_klass(CHECK_NULL);
3423 KlassHandle ak = KlassHandle(THREAD, ako);
3424 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3425 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3426 oop initial_value = JNIHandles::resolve(initialElement);
3427 if (initial_value != NULL) { // array already initialized with NULL
3428 for (int index = 0; index < length; index++) {
3429 result->obj_at_put(index, initial_value);
3430 }
3431 }
3432 ret = (jobjectArray) JNIHandles::make_local(env, result);
3433 return ret;
3434 JNI_END
3436 #ifndef USDT2
3437 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3438 #else /* USDT2 */
3439 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3440 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3441 #endif /* USDT2 */
3443 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3444 JNIWrapper("GetObjectArrayElement");
3445 #ifndef USDT2
3446 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3447 #else /* USDT2 */
3448 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3449 env, array, index);
3450 #endif /* USDT2 */
3451 jobject ret = NULL;
3452 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3453 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3454 if (a->is_within_bounds(index)) {
3455 ret = JNIHandles::make_local(env, a->obj_at(index));
3456 return ret;
3457 } else {
3458 char buf[jintAsStringSize];
3459 sprintf(buf, "%d", index);
3460 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3461 }
3462 JNI_END
3464 #ifndef USDT2
3465 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3466 #else /* USDT2 */
3467 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3468 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3469 #endif /* USDT2 */
3471 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3472 JNIWrapper("SetObjectArrayElement");
3473 #ifndef USDT2
3474 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3475 #else /* USDT2 */
3476 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3477 env, array, index, value);
3478 #endif /* USDT2 */
3479 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3481 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3482 oop v = JNIHandles::resolve(value);
3483 if (a->is_within_bounds(index)) {
3484 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3485 a->obj_at_put(index, v);
3486 } else {
3487 THROW(vmSymbols::java_lang_ArrayStoreException());
3488 }
3489 } else {
3490 char buf[jintAsStringSize];
3491 sprintf(buf, "%d", index);
3492 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3493 }
3494 JNI_END
3497 #ifndef USDT2
3498 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3499 \
3500 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3501 \
3502 JNI_ENTRY(Return, \
3503 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3504 JNIWrapper("New" XSTR(Result) "Array"); \
3505 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3506 Return ret = NULL;\
3507 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3508 \
3509 oop obj= oopFactory::Allocator(len, CHECK_0); \
3510 ret = (Return) JNIHandles::make_local(env, obj); \
3511 return ret;\
3512 JNI_END
3514 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3515 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3516 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3517 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3518 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3519 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3520 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3521 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3523 #else /* USDT2 */
3525 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3526 ,EntryProbe,ReturnProbe) \
3527 \
3528 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3529 , ReturnProbe); \
3530 \
3531 JNI_ENTRY(Return, \
3532 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3533 JNIWrapper("New" XSTR(Result) "Array"); \
3534 EntryProbe; \
3535 Return ret = NULL;\
3536 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3537 \
3538 oop obj= oopFactory::Allocator(len, CHECK_0); \
3539 ret = (Return) JNIHandles::make_local(env, obj); \
3540 return ret;\
3541 JNI_END
3543 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3544 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3545 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3546 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3547 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3548 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3549 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3550 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3551 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3552 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3553 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3554 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3555 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3556 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3557 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3558 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3559 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3560 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3561 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3562 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3563 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3564 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3565 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3566 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3567 #endif /* USDT2 */
3569 // Return an address which will fault if the caller writes to it.
3571 static char* get_bad_address() {
3572 static char* bad_address = NULL;
3573 if (bad_address == NULL) {
3574 size_t size = os::vm_allocation_granularity();
3575 bad_address = os::reserve_memory(size);
3576 if (bad_address != NULL) {
3577 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3578 /*is_committed*/false);
3579 MemTracker::record_virtual_memory_type((void*)bad_address, mtInternal);
3580 }
3581 }
3582 return bad_address;
3583 }
3586 #ifndef USDT2
3587 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3588 \
3589 JNI_QUICK_ENTRY(ElementType*, \
3590 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3591 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3592 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3593 /* allocate an chunk of memory in c land */ \
3594 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3595 ElementType* result; \
3596 int len = a->length(); \
3597 if (len == 0) { \
3598 /* Empty array: legal but useless, can't return NULL. \
3599 * Return a pointer to something useless. \
3600 * Avoid asserts in typeArrayOop. */ \
3601 result = (ElementType*)get_bad_address(); \
3602 } else { \
3603 /* JNI Specification states return NULL on OOM */ \
3604 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3605 if (result != NULL) { \
3606 /* copy the array to the c chunk */ \
3607 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3608 if (isCopy) { \
3609 *isCopy = JNI_TRUE; \
3610 } \
3611 } \
3612 } \
3613 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3614 return result; \
3615 JNI_END
3617 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3618 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3619 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3620 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3621 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3622 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3623 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3624 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3626 #else /* USDT2 */
3628 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3629 , EntryProbe, ReturnProbe) \
3630 \
3631 JNI_QUICK_ENTRY(ElementType*, \
3632 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3633 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3634 EntryProbe; \
3635 /* allocate an chunk of memory in c land */ \
3636 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3637 ElementType* result; \
3638 int len = a->length(); \
3639 if (len == 0) { \
3640 /* Empty array: legal but useless, can't return NULL. \
3641 * Return a pointer to something useless. \
3642 * Avoid asserts in typeArrayOop. */ \
3643 result = (ElementType*)get_bad_address(); \
3644 } else { \
3645 /* JNI Specification states return NULL on OOM */ \
3646 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3647 if (result != NULL) { \
3648 /* copy the array to the c chunk */ \
3649 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3650 if (isCopy) { \
3651 *isCopy = JNI_TRUE; \
3652 } \
3653 } \
3654 } \
3655 ReturnProbe; \
3656 return result; \
3657 JNI_END
3659 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3660 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3661 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3662 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3663 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3664 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3665 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3666 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3667 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3668 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3669 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3670 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3671 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3672 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3673 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3674 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3675 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3676 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3677 // Float and double probes don't return value because dtrace doesn't currently support it
3678 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3679 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3680 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3681 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3682 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3683 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3684 #endif /* USDT2 */
3686 #ifndef USDT2
3687 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3688 \
3689 JNI_QUICK_ENTRY(void, \
3690 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3691 ElementType *buf, jint mode)) \
3692 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3693 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3694 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3695 int len = a->length(); \
3696 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3697 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3698 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3699 } \
3700 if ((mode == 0) || (mode == JNI_ABORT)) { \
3701 FreeHeap(buf); \
3702 } \
3703 } \
3704 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3705 JNI_END
3707 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3708 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3709 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3710 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3711 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3712 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3713 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3714 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3716 #else /* USDT2 */
3718 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3719 , EntryProbe, ReturnProbe);\
3720 \
3721 JNI_QUICK_ENTRY(void, \
3722 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3723 ElementType *buf, jint mode)) \
3724 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3725 EntryProbe; \
3726 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3727 int len = a->length(); \
3728 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3729 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3730 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3731 } \
3732 if ((mode == 0) || (mode == JNI_ABORT)) { \
3733 FreeHeap(buf); \
3734 } \
3735 } \
3736 ReturnProbe; \
3737 JNI_END
3739 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3740 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3741 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3742 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3743 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3744 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3745 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3746 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3747 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3748 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3749 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3750 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3751 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3752 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3753 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3754 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3755 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3756 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3757 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3758 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3759 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3760 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3761 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3762 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3763 #endif /* USDT2 */
3765 #ifndef USDT2
3766 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3767 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3768 \
3769 JNI_ENTRY(void, \
3770 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3771 jsize len, ElementType *buf)) \
3772 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3773 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3774 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3775 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3776 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3777 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3778 } else { \
3779 if (len > 0) { \
3780 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3781 memcpy((u_char*) buf, \
3782 (u_char*) src->Tag##_at_addr(start), \
3783 len << sc); \
3784 } \
3785 } \
3786 JNI_END
3788 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3789 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3790 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3791 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3792 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3793 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3794 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3795 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3797 #else /* USDT2 */
3799 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3800 , EntryProbe, ReturnProbe); \
3801 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3802 , ReturnProbe); \
3803 \
3804 JNI_ENTRY(void, \
3805 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3806 jsize len, ElementType *buf)) \
3807 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3808 EntryProbe; \
3809 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3810 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3811 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3812 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3813 } else { \
3814 if (len > 0) { \
3815 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3816 memcpy((u_char*) buf, \
3817 (u_char*) src->Tag##_at_addr(start), \
3818 len << sc); \
3819 } \
3820 } \
3821 JNI_END
3823 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3824 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3825 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3826 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3827 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3828 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3829 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3830 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3831 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3832 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3833 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3834 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3835 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3836 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3837 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3838 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3839 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3840 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3841 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3842 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3843 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3844 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3845 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3846 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3847 #endif /* USDT2 */
3849 #ifndef USDT2
3850 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3851 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3852 \
3853 JNI_ENTRY(void, \
3854 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3855 jsize len, const ElementType *buf)) \
3856 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3857 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3858 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3859 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3860 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3861 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3862 } else { \
3863 if (len > 0) { \
3864 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3865 memcpy((u_char*) dst->Tag##_at_addr(start), \
3866 (u_char*) buf, \
3867 len << sc); \
3868 } \
3869 } \
3870 JNI_END
3872 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3873 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3874 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3875 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3876 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3877 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3878 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3879 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3881 #else /* USDT2 */
3883 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3884 , EntryProbe, ReturnProbe); \
3885 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3886 ,ReturnProbe); \
3887 \
3888 JNI_ENTRY(void, \
3889 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3890 jsize len, const ElementType *buf)) \
3891 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3892 EntryProbe; \
3893 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3894 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3895 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3896 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3897 } else { \
3898 if (len > 0) { \
3899 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3900 memcpy((u_char*) dst->Tag##_at_addr(start), \
3901 (u_char*) buf, \
3902 len << sc); \
3903 } \
3904 } \
3905 JNI_END
3907 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3908 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3909 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3910 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3911 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3912 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3913 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3914 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3915 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3916 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3917 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3918 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3919 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3920 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3921 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3922 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3923 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3924 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3925 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3926 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3927 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3928 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3929 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3930 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3931 #endif /* USDT2 */
3934 //
3935 // Interception of natives
3936 //
3938 // The RegisterNatives call being attempted tried to register with a method that
3939 // is not native. Ask JVM TI what prefixes have been specified. Then check
3940 // to see if the native method is now wrapped with the prefixes. See the
3941 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3942 static Method* find_prefixed_native(KlassHandle k,
3943 Symbol* name, Symbol* signature, TRAPS) {
3944 #if INCLUDE_JVMTI
3945 ResourceMark rm(THREAD);
3946 Method* method;
3947 int name_len = name->utf8_length();
3948 char* name_str = name->as_utf8();
3949 int prefix_count;
3950 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3951 for (int i = 0; i < prefix_count; i++) {
3952 char* prefix = prefixes[i];
3953 int prefix_len = (int)strlen(prefix);
3955 // try adding this prefix to the method name and see if it matches another method name
3956 int trial_len = name_len + prefix_len;
3957 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3958 strcpy(trial_name_str, prefix);
3959 strcat(trial_name_str, name_str);
3960 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3961 if (trial_name == NULL) {
3962 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3963 }
3964 method = k()->lookup_method(trial_name, signature);
3965 if (method == NULL) {
3966 continue; // signature doesn't match, try the next prefix
3967 }
3968 if (method->is_native()) {
3969 method->set_is_prefixed_native();
3970 return method; // wahoo, we found a prefixed version of the method, return it
3971 }
3972 // found as non-native, so prefix is good, add it, probably just need more prefixes
3973 name_len = trial_len;
3974 name_str = trial_name_str;
3975 }
3976 #endif // INCLUDE_JVMTI
3977 return NULL; // not found
3978 }
3980 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3981 Method* method = k()->lookup_method(name, signature);
3982 if (method == NULL) {
3983 ResourceMark rm;
3984 stringStream st;
3985 st.print("Method %s name or signature does not match",
3986 Method::name_and_sig_as_C_string(k(), name, signature));
3987 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3988 }
3989 if (!method->is_native()) {
3990 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3991 method = find_prefixed_native(k, name, signature, THREAD);
3992 if (method == NULL) {
3993 ResourceMark rm;
3994 stringStream st;
3995 st.print("Method %s is not declared as native",
3996 Method::name_and_sig_as_C_string(k(), name, signature));
3997 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3998 }
3999 }
4001 if (entry != NULL) {
4002 method->set_native_function(entry,
4003 Method::native_bind_event_is_interesting);
4004 } else {
4005 method->clear_native_function();
4006 }
4007 if (PrintJNIResolving) {
4008 ResourceMark rm(THREAD);
4009 tty->print_cr("[Registering JNI native method %s.%s]",
4010 method->method_holder()->external_name(),
4011 method->name()->as_C_string());
4012 }
4013 return true;
4014 }
4016 #ifndef USDT2
4017 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4018 #else /* USDT2 */
4019 DT_RETURN_MARK_DECL(RegisterNatives, jint
4020 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4021 #endif /* USDT2 */
4023 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4024 const JNINativeMethod *methods,
4025 jint nMethods))
4026 JNIWrapper("RegisterNatives");
4027 #ifndef USDT2
4028 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4029 #else /* USDT2 */
4030 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4031 env, clazz, (void *) methods, nMethods);
4032 #endif /* USDT2 */
4033 jint ret = 0;
4034 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4036 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4038 for (int index = 0; index < nMethods; index++) {
4039 const char* meth_name = methods[index].name;
4040 const char* meth_sig = methods[index].signature;
4041 int meth_name_len = (int)strlen(meth_name);
4043 // The class should have been loaded (we have an instance of the class
4044 // passed in) so the method and signature should already be in the symbol
4045 // table. If they're not there, the method doesn't exist.
4046 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4047 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4049 if (name == NULL || signature == NULL) {
4050 ResourceMark rm;
4051 stringStream st;
4052 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
4053 // Must return negative value on failure
4054 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4055 }
4057 bool res = register_native(h_k, name, signature,
4058 (address) methods[index].fnPtr, THREAD);
4059 if (!res) {
4060 ret = -1;
4061 break;
4062 }
4063 }
4064 return ret;
4065 JNI_END
4068 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4069 JNIWrapper("UnregisterNatives");
4070 #ifndef USDT2
4071 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4072 #else /* USDT2 */
4073 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4074 env, clazz);
4075 #endif /* USDT2 */
4076 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4077 //%note jni_2
4078 if (k->oop_is_instance()) {
4079 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4080 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4081 if (m->is_native()) {
4082 m->clear_native_function();
4083 m->set_signature_handler(NULL);
4084 }
4085 }
4086 }
4087 #ifndef USDT2
4088 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4089 #else /* USDT2 */
4090 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4091 0);
4092 #endif /* USDT2 */
4093 return 0;
4094 JNI_END
4096 //
4097 // Monitor functions
4098 //
4100 #ifndef USDT2
4101 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4102 #else /* USDT2 */
4103 DT_RETURN_MARK_DECL(MonitorEnter, jint
4104 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4105 #endif /* USDT2 */
4107 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4108 #ifndef USDT2
4109 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4110 #else /* USDT2 */
4111 HOTSPOT_JNI_MONITORENTER_ENTRY(
4112 env, jobj);
4113 #endif /* USDT2 */
4114 jint ret = JNI_ERR;
4115 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4117 // If the object is null, we can't do anything with it
4118 if (jobj == NULL) {
4119 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4120 }
4122 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4123 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4124 ret = JNI_OK;
4125 return ret;
4126 JNI_END
4128 #ifndef USDT2
4129 DT_RETURN_MARK_DECL(MonitorExit, jint);
4130 #else /* USDT2 */
4131 DT_RETURN_MARK_DECL(MonitorExit, jint
4132 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4133 #endif /* USDT2 */
4135 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4136 #ifndef USDT2
4137 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4138 #else /* USDT2 */
4139 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4140 env, jobj);
4141 #endif /* USDT2 */
4142 jint ret = JNI_ERR;
4143 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4145 // Don't do anything with a null object
4146 if (jobj == NULL) {
4147 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4148 }
4150 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4151 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4153 ret = JNI_OK;
4154 return ret;
4155 JNI_END
4157 //
4158 // Extensions
4159 //
4161 #ifndef USDT2
4162 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4163 #else /* USDT2 */
4164 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4165 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4166 #endif /* USDT2 */
4168 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4169 JNIWrapper("GetStringRegion");
4170 #ifndef USDT2
4171 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4172 #else /* USDT2 */
4173 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4174 env, string, start, len, buf);
4175 #endif /* USDT2 */
4176 DT_VOID_RETURN_MARK(GetStringRegion);
4177 oop s = JNIHandles::resolve_non_null(string);
4178 int s_len = java_lang_String::length(s);
4179 if (start < 0 || len < 0 || start + len > s_len) {
4180 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4181 } else {
4182 if (len > 0) {
4183 int s_offset = java_lang_String::offset(s);
4184 typeArrayOop s_value = java_lang_String::value(s);
4185 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4186 }
4187 }
4188 JNI_END
4190 #ifndef USDT2
4191 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4192 #else /* USDT2 */
4193 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4194 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4195 #endif /* USDT2 */
4197 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4198 JNIWrapper("GetStringUTFRegion");
4199 #ifndef USDT2
4200 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4201 #else /* USDT2 */
4202 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4203 env, string, start, len, buf);
4204 #endif /* USDT2 */
4205 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4206 oop s = JNIHandles::resolve_non_null(string);
4207 int s_len = java_lang_String::length(s);
4208 if (start < 0 || len < 0 || start + len > s_len) {
4209 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4210 } else {
4211 //%note jni_7
4212 if (len > 0) {
4213 ResourceMark rm(THREAD);
4214 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4215 int utf_len = (int)strlen(utf_region);
4216 memcpy(buf, utf_region, utf_len);
4217 buf[utf_len] = 0;
4218 } else {
4219 // JDK null-terminates the buffer even in len is zero
4220 if (buf != NULL) {
4221 buf[0] = 0;
4222 }
4223 }
4224 }
4225 JNI_END
4228 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4229 JNIWrapper("GetPrimitiveArrayCritical");
4230 #ifndef USDT2
4231 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4232 #else /* USDT2 */
4233 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4234 env, array, (uintptr_t *) isCopy);
4235 #endif /* USDT2 */
4236 GC_locker::lock_critical(thread);
4237 if (isCopy != NULL) {
4238 *isCopy = JNI_FALSE;
4239 }
4240 oop a = JNIHandles::resolve_non_null(array);
4241 assert(a->is_array(), "just checking");
4242 BasicType type;
4243 if (a->is_objArray()) {
4244 type = T_OBJECT;
4245 } else {
4246 type = TypeArrayKlass::cast(a->klass())->element_type();
4247 }
4248 void* ret = arrayOop(a)->base(type);
4249 #ifndef USDT2
4250 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4251 #else /* USDT2 */
4252 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4253 ret);
4254 #endif /* USDT2 */
4255 return ret;
4256 JNI_END
4259 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4260 JNIWrapper("ReleasePrimitiveArrayCritical");
4261 #ifndef USDT2
4262 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4263 #else /* USDT2 */
4264 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4265 env, array, carray, mode);
4266 #endif /* USDT2 */
4267 // The array, carray and mode arguments are ignored
4268 GC_locker::unlock_critical(thread);
4269 #ifndef USDT2
4270 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4271 #else /* USDT2 */
4272 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4273 );
4274 #endif /* USDT2 */
4275 JNI_END
4278 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4279 JNIWrapper("GetStringCritical");
4280 #ifndef USDT2
4281 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4282 #else /* USDT2 */
4283 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4284 env, string, (uintptr_t *) isCopy);
4285 #endif /* USDT2 */
4286 GC_locker::lock_critical(thread);
4287 if (isCopy != NULL) {
4288 *isCopy = JNI_FALSE;
4289 }
4290 oop s = JNIHandles::resolve_non_null(string);
4291 int s_len = java_lang_String::length(s);
4292 typeArrayOop s_value = java_lang_String::value(s);
4293 int s_offset = java_lang_String::offset(s);
4294 const jchar* ret;
4295 if (s_len > 0) {
4296 ret = s_value->char_at_addr(s_offset);
4297 } else {
4298 ret = (jchar*) s_value->base(T_CHAR);
4299 }
4300 #ifndef USDT2
4301 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4302 #else /* USDT2 */
4303 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4304 (uint16_t *) ret);
4305 #endif /* USDT2 */
4306 return ret;
4307 JNI_END
4310 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4311 JNIWrapper("ReleaseStringCritical");
4312 #ifndef USDT2
4313 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4314 #else /* USDT2 */
4315 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4316 env, str, (uint16_t *) chars);
4317 #endif /* USDT2 */
4318 // The str and chars arguments are ignored
4319 GC_locker::unlock_critical(thread);
4320 #ifndef USDT2
4321 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4322 #else /* USDT2 */
4323 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4324 );
4325 #endif /* USDT2 */
4326 JNI_END
4329 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4330 JNIWrapper("jni_NewWeakGlobalRef");
4331 #ifndef USDT2
4332 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4333 #else /* USDT2 */
4334 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4335 env, ref);
4336 #endif /* USDT2 */
4337 Handle ref_handle(thread, JNIHandles::resolve(ref));
4338 jweak ret = JNIHandles::make_weak_global(ref_handle);
4339 #ifndef USDT2
4340 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4341 #else /* USDT2 */
4342 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4343 ret);
4344 #endif /* USDT2 */
4345 return ret;
4346 JNI_END
4348 // Must be JNI_ENTRY (with HandleMark)
4349 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4350 JNIWrapper("jni_DeleteWeakGlobalRef");
4351 #ifndef USDT2
4352 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4353 #else /* USDT2 */
4354 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4355 env, ref);
4356 #endif /* USDT2 */
4357 JNIHandles::destroy_weak_global(ref);
4358 #ifndef USDT2
4359 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4360 #else /* USDT2 */
4361 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4362 );
4363 #endif /* USDT2 */
4364 JNI_END
4367 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4368 JNIWrapper("jni_ExceptionCheck");
4369 #ifndef USDT2
4370 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4371 #else /* USDT2 */
4372 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4373 env);
4374 #endif /* USDT2 */
4375 jni_check_async_exceptions(thread);
4376 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4377 #ifndef USDT2
4378 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4379 #else /* USDT2 */
4380 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4381 ret);
4382 #endif /* USDT2 */
4383 return ret;
4384 JNI_END
4387 // Initialization state for three routines below relating to
4388 // java.nio.DirectBuffers
4389 static jint directBufferSupportInitializeStarted = 0;
4390 static volatile jint directBufferSupportInitializeEnded = 0;
4391 static volatile jint directBufferSupportInitializeFailed = 0;
4392 static jclass bufferClass = NULL;
4393 static jclass directBufferClass = NULL;
4394 static jclass directByteBufferClass = NULL;
4395 static jmethodID directByteBufferConstructor = NULL;
4396 static jfieldID directBufferAddressField = NULL;
4397 static jfieldID bufferCapacityField = NULL;
4399 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4400 Handle loader; // null (bootstrap) loader
4401 Handle protection_domain; // null protection domain
4403 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4404 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4406 if (TraceClassResolution && result != NULL) {
4407 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4408 }
4409 return result;
4410 }
4412 // These lookups are done with the NULL (bootstrap) ClassLoader to
4413 // circumvent any security checks that would be done by jni_FindClass.
4414 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4415 {
4416 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4417 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4418 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4419 return true;
4420 }
4421 JNI_END
4424 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4425 if (directBufferSupportInitializeFailed) {
4426 return false;
4427 }
4429 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4430 if (!lookupDirectBufferClasses(env)) {
4431 directBufferSupportInitializeFailed = 1;
4432 return false;
4433 }
4435 // Make global references for these
4436 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4437 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4438 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4440 // Get needed field and method IDs
4441 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4442 if (env->ExceptionCheck()) {
4443 env->ExceptionClear();
4444 directBufferSupportInitializeFailed = 1;
4445 return false;
4446 }
4447 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4448 if (env->ExceptionCheck()) {
4449 env->ExceptionClear();
4450 directBufferSupportInitializeFailed = 1;
4451 return false;
4452 }
4453 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4454 if (env->ExceptionCheck()) {
4455 env->ExceptionClear();
4456 directBufferSupportInitializeFailed = 1;
4457 return false;
4458 }
4460 if ((directByteBufferConstructor == NULL) ||
4461 (directBufferAddressField == NULL) ||
4462 (bufferCapacityField == NULL)) {
4463 directBufferSupportInitializeFailed = 1;
4464 return false;
4465 }
4467 directBufferSupportInitializeEnded = 1;
4468 } else {
4469 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4470 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4471 // os::sleep which requires the VM state transition. On other platforms, it
4472 // is not necessary. The following call to change the VM state is purposely
4473 // put inside the loop to avoid potential deadlock when multiple threads
4474 // try to call this method. See 6791815 for more details.
4475 ThreadInVMfromNative tivn(thread);
4476 os::yield_all();
4477 }
4478 }
4480 return !directBufferSupportInitializeFailed;
4481 }
4483 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4484 {
4485 // thread_from_jni_environment() will block if VM is gone.
4486 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4488 JNIWrapper("jni_NewDirectByteBuffer");
4489 #ifndef USDT2
4490 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4491 #else /* USDT2 */
4492 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4493 env, address, capacity);
4494 #endif /* USDT2 */
4496 if (!directBufferSupportInitializeEnded) {
4497 if (!initializeDirectBufferSupport(env, thread)) {
4498 #ifndef USDT2
4499 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4500 #else /* USDT2 */
4501 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4502 NULL);
4503 #endif /* USDT2 */
4504 return NULL;
4505 }
4506 }
4508 // Being paranoid about accidental sign extension on address
4509 jlong addr = (jlong) ((uintptr_t) address);
4510 // NOTE that package-private DirectByteBuffer constructor currently
4511 // takes int capacity
4512 jint cap = (jint) capacity;
4513 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4514 #ifndef USDT2
4515 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4516 #else /* USDT2 */
4517 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4518 ret);
4519 #endif /* USDT2 */
4520 return ret;
4521 }
4523 #ifndef USDT2
4524 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4525 #else /* USDT2 */
4526 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4527 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4528 #endif /* USDT2 */
4530 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4531 {
4532 // thread_from_jni_environment() will block if VM is gone.
4533 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4535 JNIWrapper("jni_GetDirectBufferAddress");
4536 #ifndef USDT2
4537 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4538 #else /* USDT2 */
4539 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4540 env, buf);
4541 #endif /* USDT2 */
4542 void* ret = NULL;
4543 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4545 if (!directBufferSupportInitializeEnded) {
4546 if (!initializeDirectBufferSupport(env, thread)) {
4547 return 0;
4548 }
4549 }
4551 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4552 return 0;
4553 }
4555 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4556 return ret;
4557 }
4559 #ifndef USDT2
4560 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4561 #else /* USDT2 */
4562 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4563 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4564 #endif /* USDT2 */
4566 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4567 {
4568 // thread_from_jni_environment() will block if VM is gone.
4569 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4571 JNIWrapper("jni_GetDirectBufferCapacity");
4572 #ifndef USDT2
4573 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4574 #else /* USDT2 */
4575 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4576 env, buf);
4577 #endif /* USDT2 */
4578 jlong ret = -1;
4579 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4581 if (!directBufferSupportInitializeEnded) {
4582 if (!initializeDirectBufferSupport(env, thread)) {
4583 ret = 0;
4584 return ret;
4585 }
4586 }
4588 if (buf == NULL) {
4589 return -1;
4590 }
4592 if (!env->IsInstanceOf(buf, directBufferClass)) {
4593 return -1;
4594 }
4596 // NOTE that capacity is currently an int in the implementation
4597 ret = env->GetIntField(buf, bufferCapacityField);
4598 return ret;
4599 }
4602 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4603 JNIWrapper("GetVersion");
4604 #ifndef USDT2
4605 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4606 #else /* USDT2 */
4607 HOTSPOT_JNI_GETVERSION_ENTRY(
4608 env);
4609 #endif /* USDT2 */
4610 #ifndef USDT2
4611 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4612 #else /* USDT2 */
4613 HOTSPOT_JNI_GETVERSION_RETURN(
4614 CurrentVersion);
4615 #endif /* USDT2 */
4616 return CurrentVersion;
4617 JNI_END
4619 extern struct JavaVM_ main_vm;
4621 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4622 JNIWrapper("jni_GetJavaVM");
4623 #ifndef USDT2
4624 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4625 #else /* USDT2 */
4626 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4627 env, (void **) vm);
4628 #endif /* USDT2 */
4629 *vm = (JavaVM *)(&main_vm);
4630 #ifndef USDT2
4631 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4632 #else /* USDT2 */
4633 HOTSPOT_JNI_GETJAVAVM_RETURN(
4634 JNI_OK);
4635 #endif /* USDT2 */
4636 return JNI_OK;
4637 JNI_END
4639 // Structure containing all jni functions
4640 struct JNINativeInterface_ jni_NativeInterface = {
4641 NULL,
4642 NULL,
4643 NULL,
4645 NULL,
4647 jni_GetVersion,
4649 jni_DefineClass,
4650 jni_FindClass,
4652 jni_FromReflectedMethod,
4653 jni_FromReflectedField,
4655 jni_ToReflectedMethod,
4657 jni_GetSuperclass,
4658 jni_IsAssignableFrom,
4660 jni_ToReflectedField,
4662 jni_Throw,
4663 jni_ThrowNew,
4664 jni_ExceptionOccurred,
4665 jni_ExceptionDescribe,
4666 jni_ExceptionClear,
4667 jni_FatalError,
4669 jni_PushLocalFrame,
4670 jni_PopLocalFrame,
4672 jni_NewGlobalRef,
4673 jni_DeleteGlobalRef,
4674 jni_DeleteLocalRef,
4675 jni_IsSameObject,
4677 jni_NewLocalRef,
4678 jni_EnsureLocalCapacity,
4680 jni_AllocObject,
4681 jni_NewObject,
4682 jni_NewObjectV,
4683 jni_NewObjectA,
4685 jni_GetObjectClass,
4686 jni_IsInstanceOf,
4688 jni_GetMethodID,
4690 jni_CallObjectMethod,
4691 jni_CallObjectMethodV,
4692 jni_CallObjectMethodA,
4693 jni_CallBooleanMethod,
4694 jni_CallBooleanMethodV,
4695 jni_CallBooleanMethodA,
4696 jni_CallByteMethod,
4697 jni_CallByteMethodV,
4698 jni_CallByteMethodA,
4699 jni_CallCharMethod,
4700 jni_CallCharMethodV,
4701 jni_CallCharMethodA,
4702 jni_CallShortMethod,
4703 jni_CallShortMethodV,
4704 jni_CallShortMethodA,
4705 jni_CallIntMethod,
4706 jni_CallIntMethodV,
4707 jni_CallIntMethodA,
4708 jni_CallLongMethod,
4709 jni_CallLongMethodV,
4710 jni_CallLongMethodA,
4711 jni_CallFloatMethod,
4712 jni_CallFloatMethodV,
4713 jni_CallFloatMethodA,
4714 jni_CallDoubleMethod,
4715 jni_CallDoubleMethodV,
4716 jni_CallDoubleMethodA,
4717 jni_CallVoidMethod,
4718 jni_CallVoidMethodV,
4719 jni_CallVoidMethodA,
4721 jni_CallNonvirtualObjectMethod,
4722 jni_CallNonvirtualObjectMethodV,
4723 jni_CallNonvirtualObjectMethodA,
4724 jni_CallNonvirtualBooleanMethod,
4725 jni_CallNonvirtualBooleanMethodV,
4726 jni_CallNonvirtualBooleanMethodA,
4727 jni_CallNonvirtualByteMethod,
4728 jni_CallNonvirtualByteMethodV,
4729 jni_CallNonvirtualByteMethodA,
4730 jni_CallNonvirtualCharMethod,
4731 jni_CallNonvirtualCharMethodV,
4732 jni_CallNonvirtualCharMethodA,
4733 jni_CallNonvirtualShortMethod,
4734 jni_CallNonvirtualShortMethodV,
4735 jni_CallNonvirtualShortMethodA,
4736 jni_CallNonvirtualIntMethod,
4737 jni_CallNonvirtualIntMethodV,
4738 jni_CallNonvirtualIntMethodA,
4739 jni_CallNonvirtualLongMethod,
4740 jni_CallNonvirtualLongMethodV,
4741 jni_CallNonvirtualLongMethodA,
4742 jni_CallNonvirtualFloatMethod,
4743 jni_CallNonvirtualFloatMethodV,
4744 jni_CallNonvirtualFloatMethodA,
4745 jni_CallNonvirtualDoubleMethod,
4746 jni_CallNonvirtualDoubleMethodV,
4747 jni_CallNonvirtualDoubleMethodA,
4748 jni_CallNonvirtualVoidMethod,
4749 jni_CallNonvirtualVoidMethodV,
4750 jni_CallNonvirtualVoidMethodA,
4752 jni_GetFieldID,
4754 jni_GetObjectField,
4755 jni_GetBooleanField,
4756 jni_GetByteField,
4757 jni_GetCharField,
4758 jni_GetShortField,
4759 jni_GetIntField,
4760 jni_GetLongField,
4761 jni_GetFloatField,
4762 jni_GetDoubleField,
4764 jni_SetObjectField,
4765 jni_SetBooleanField,
4766 jni_SetByteField,
4767 jni_SetCharField,
4768 jni_SetShortField,
4769 jni_SetIntField,
4770 jni_SetLongField,
4771 jni_SetFloatField,
4772 jni_SetDoubleField,
4774 jni_GetStaticMethodID,
4776 jni_CallStaticObjectMethod,
4777 jni_CallStaticObjectMethodV,
4778 jni_CallStaticObjectMethodA,
4779 jni_CallStaticBooleanMethod,
4780 jni_CallStaticBooleanMethodV,
4781 jni_CallStaticBooleanMethodA,
4782 jni_CallStaticByteMethod,
4783 jni_CallStaticByteMethodV,
4784 jni_CallStaticByteMethodA,
4785 jni_CallStaticCharMethod,
4786 jni_CallStaticCharMethodV,
4787 jni_CallStaticCharMethodA,
4788 jni_CallStaticShortMethod,
4789 jni_CallStaticShortMethodV,
4790 jni_CallStaticShortMethodA,
4791 jni_CallStaticIntMethod,
4792 jni_CallStaticIntMethodV,
4793 jni_CallStaticIntMethodA,
4794 jni_CallStaticLongMethod,
4795 jni_CallStaticLongMethodV,
4796 jni_CallStaticLongMethodA,
4797 jni_CallStaticFloatMethod,
4798 jni_CallStaticFloatMethodV,
4799 jni_CallStaticFloatMethodA,
4800 jni_CallStaticDoubleMethod,
4801 jni_CallStaticDoubleMethodV,
4802 jni_CallStaticDoubleMethodA,
4803 jni_CallStaticVoidMethod,
4804 jni_CallStaticVoidMethodV,
4805 jni_CallStaticVoidMethodA,
4807 jni_GetStaticFieldID,
4809 jni_GetStaticObjectField,
4810 jni_GetStaticBooleanField,
4811 jni_GetStaticByteField,
4812 jni_GetStaticCharField,
4813 jni_GetStaticShortField,
4814 jni_GetStaticIntField,
4815 jni_GetStaticLongField,
4816 jni_GetStaticFloatField,
4817 jni_GetStaticDoubleField,
4819 jni_SetStaticObjectField,
4820 jni_SetStaticBooleanField,
4821 jni_SetStaticByteField,
4822 jni_SetStaticCharField,
4823 jni_SetStaticShortField,
4824 jni_SetStaticIntField,
4825 jni_SetStaticLongField,
4826 jni_SetStaticFloatField,
4827 jni_SetStaticDoubleField,
4829 jni_NewString,
4830 jni_GetStringLength,
4831 jni_GetStringChars,
4832 jni_ReleaseStringChars,
4834 jni_NewStringUTF,
4835 jni_GetStringUTFLength,
4836 jni_GetStringUTFChars,
4837 jni_ReleaseStringUTFChars,
4839 jni_GetArrayLength,
4841 jni_NewObjectArray,
4842 jni_GetObjectArrayElement,
4843 jni_SetObjectArrayElement,
4845 jni_NewBooleanArray,
4846 jni_NewByteArray,
4847 jni_NewCharArray,
4848 jni_NewShortArray,
4849 jni_NewIntArray,
4850 jni_NewLongArray,
4851 jni_NewFloatArray,
4852 jni_NewDoubleArray,
4854 jni_GetBooleanArrayElements,
4855 jni_GetByteArrayElements,
4856 jni_GetCharArrayElements,
4857 jni_GetShortArrayElements,
4858 jni_GetIntArrayElements,
4859 jni_GetLongArrayElements,
4860 jni_GetFloatArrayElements,
4861 jni_GetDoubleArrayElements,
4863 jni_ReleaseBooleanArrayElements,
4864 jni_ReleaseByteArrayElements,
4865 jni_ReleaseCharArrayElements,
4866 jni_ReleaseShortArrayElements,
4867 jni_ReleaseIntArrayElements,
4868 jni_ReleaseLongArrayElements,
4869 jni_ReleaseFloatArrayElements,
4870 jni_ReleaseDoubleArrayElements,
4872 jni_GetBooleanArrayRegion,
4873 jni_GetByteArrayRegion,
4874 jni_GetCharArrayRegion,
4875 jni_GetShortArrayRegion,
4876 jni_GetIntArrayRegion,
4877 jni_GetLongArrayRegion,
4878 jni_GetFloatArrayRegion,
4879 jni_GetDoubleArrayRegion,
4881 jni_SetBooleanArrayRegion,
4882 jni_SetByteArrayRegion,
4883 jni_SetCharArrayRegion,
4884 jni_SetShortArrayRegion,
4885 jni_SetIntArrayRegion,
4886 jni_SetLongArrayRegion,
4887 jni_SetFloatArrayRegion,
4888 jni_SetDoubleArrayRegion,
4890 jni_RegisterNatives,
4891 jni_UnregisterNatives,
4893 jni_MonitorEnter,
4894 jni_MonitorExit,
4896 jni_GetJavaVM,
4898 jni_GetStringRegion,
4899 jni_GetStringUTFRegion,
4901 jni_GetPrimitiveArrayCritical,
4902 jni_ReleasePrimitiveArrayCritical,
4904 jni_GetStringCritical,
4905 jni_ReleaseStringCritical,
4907 jni_NewWeakGlobalRef,
4908 jni_DeleteWeakGlobalRef,
4910 jni_ExceptionCheck,
4912 jni_NewDirectByteBuffer,
4913 jni_GetDirectBufferAddress,
4914 jni_GetDirectBufferCapacity,
4916 // New 1_6 features
4918 jni_GetObjectRefType
4919 };
4922 // For jvmti use to modify jni function table.
4923 // Java threads in native contiues to run until it is transitioned
4924 // to VM at safepoint. Before the transition or before it is blocked
4925 // for safepoint it may access jni function table. VM could crash if
4926 // any java thread access the jni function table in the middle of memcpy.
4927 // To avoid this each function pointers are copied automically.
4928 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4929 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4930 intptr_t *a = (intptr_t *) jni_functions();
4931 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4932 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4933 Atomic::store_ptr(*b++, a++);
4934 }
4935 }
4937 void quicken_jni_functions() {
4938 // Replace Get<Primitive>Field with fast versions
4939 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4940 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4941 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4942 // windows x86 currently needs SEH wrapper and the gain of the fast
4943 // versions currently isn't certain for server vm on uniprocessor.
4944 && os::is_MP()
4945 #endif
4946 ) {
4947 address func;
4948 func = JNI_FastGetField::generate_fast_get_boolean_field();
4949 if (func != (address)-1) {
4950 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4951 }
4952 func = JNI_FastGetField::generate_fast_get_byte_field();
4953 if (func != (address)-1) {
4954 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4955 }
4956 func = JNI_FastGetField::generate_fast_get_char_field();
4957 if (func != (address)-1) {
4958 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4959 }
4960 func = JNI_FastGetField::generate_fast_get_short_field();
4961 if (func != (address)-1) {
4962 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4963 }
4964 func = JNI_FastGetField::generate_fast_get_int_field();
4965 if (func != (address)-1) {
4966 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4967 }
4968 func = JNI_FastGetField::generate_fast_get_long_field();
4969 if (func != (address)-1) {
4970 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4971 }
4972 func = JNI_FastGetField::generate_fast_get_float_field();
4973 if (func != (address)-1) {
4974 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4975 }
4976 func = JNI_FastGetField::generate_fast_get_double_field();
4977 if (func != (address)-1) {
4978 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4979 }
4980 }
4981 }
4983 // Returns the function structure
4984 struct JNINativeInterface_* jni_functions() {
4985 #if INCLUDE_JNI_CHECK
4986 if (CheckJNICalls) return jni_functions_check();
4987 #endif // INCLUDE_JNI_CHECK
4988 return &jni_NativeInterface;
4989 }
4991 // Returns the function structure
4992 struct JNINativeInterface_* jni_functions_nocheck() {
4993 return &jni_NativeInterface;
4994 }
4997 // Invocation API
5000 // Forward declaration
5001 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
5003 // Global invocation API vars
5004 volatile jint vm_created = 0;
5005 // Indicate whether it is safe to recreate VM
5006 volatile jint safe_to_recreate_vm = 1;
5007 struct JavaVM_ main_vm = {&jni_InvokeInterface};
5010 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
5011 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
5013 #ifndef USDT2
5014 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
5015 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
5016 #else /* USDT2 */
5017 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
5018 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
5019 #endif /* USDT2 */
5021 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5022 #ifndef USDT2
5023 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5024 #else /* USDT2 */
5025 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5026 args_);
5027 #endif /* USDT2 */
5028 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5029 jint ret = JNI_ERR;
5030 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5032 if (Threads::is_supported_jni_version(args->version)) {
5033 ret = JNI_OK;
5034 }
5035 // 1.1 style no longer supported in hotspot.
5036 // According the JNI spec, we should update args->version on return.
5037 // We also use the structure to communicate with launcher about default
5038 // stack size.
5039 if (args->version == JNI_VERSION_1_1) {
5040 args->version = JNI_VERSION_1_2;
5041 // javaStackSize is int in arguments structure
5042 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5043 args->javaStackSize = (jint)(ThreadStackSize * K);
5044 }
5045 return ret;
5046 }
5048 #ifndef PRODUCT
5050 #include "gc_implementation/shared/gcTimer.hpp"
5051 #include "gc_interface/collectedHeap.hpp"
5052 #if INCLUDE_ALL_GCS
5053 #include "gc_implementation/g1/heapRegionRemSet.hpp"
5054 #endif
5055 #include "memory/guardedMemory.hpp"
5056 #include "utilities/quickSort.hpp"
5057 #include "utilities/ostream.hpp"
5058 #if INCLUDE_VM_STRUCTS
5059 #include "runtime/vmStructs.hpp"
5060 #endif
5062 #define run_unit_test(unit_test_function_call) \
5063 tty->print_cr("Running test: " #unit_test_function_call); \
5064 unit_test_function_call
5066 // Forward declaration
5067 void TestOS_test();
5068 void TestReservedSpace_test();
5069 void TestReserveMemorySpecial_test();
5070 void TestVirtualSpace_test();
5071 void TestMetaspaceAux_test();
5072 void TestMetachunk_test();
5073 void TestVirtualSpaceNode_test();
5074 void TestNewSize_test();
5075 void TestKlass_test();
5076 void Test_linked_list();
5077 void TestChunkedList_test();
5078 #if INCLUDE_ALL_GCS
5079 void TestOldFreeSpaceCalculation_test();
5080 void TestG1BiasedArray_test();
5081 void TestBufferingOopClosure_test();
5082 void TestCodeCacheRemSet_test();
5083 void FreeRegionList_test();
5084 #endif
5086 void execute_internal_vm_tests() {
5087 if (ExecuteInternalVMTests) {
5088 tty->print_cr("Running internal VM tests");
5089 run_unit_test(TestOS_test());
5090 run_unit_test(TestReservedSpace_test());
5091 run_unit_test(TestReserveMemorySpecial_test());
5092 run_unit_test(TestVirtualSpace_test());
5093 run_unit_test(TestMetaspaceAux_test());
5094 run_unit_test(TestMetachunk_test());
5095 run_unit_test(TestVirtualSpaceNode_test());
5096 run_unit_test(GlobalDefinitions::test_globals());
5097 run_unit_test(GCTimerAllTest::all());
5098 run_unit_test(arrayOopDesc::test_max_array_length());
5099 run_unit_test(CollectedHeap::test_is_in());
5100 run_unit_test(QuickSort::test_quick_sort());
5101 run_unit_test(GuardedMemory::test_guarded_memory());
5102 run_unit_test(AltHashing::test_alt_hash());
5103 run_unit_test(test_loggc_filename());
5104 run_unit_test(TestNewSize_test());
5105 run_unit_test(TestKlass_test());
5106 run_unit_test(Test_linked_list());
5107 run_unit_test(TestChunkedList_test());
5108 #if INCLUDE_VM_STRUCTS
5109 run_unit_test(VMStructs::test());
5110 #endif
5111 #if INCLUDE_ALL_GCS
5112 run_unit_test(TestOldFreeSpaceCalculation_test());
5113 run_unit_test(TestG1BiasedArray_test());
5114 run_unit_test(HeapRegionRemSet::test_prt());
5115 run_unit_test(TestBufferingOopClosure_test());
5116 run_unit_test(TestCodeCacheRemSet_test());
5117 if (UseG1GC) {
5118 run_unit_test(FreeRegionList_test());
5119 }
5120 #endif
5121 tty->print_cr("All internal VM tests passed");
5122 }
5123 }
5125 #undef run_unit_test
5127 #endif
5129 #ifndef USDT2
5130 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5131 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5132 #else /* USDT2 */
5133 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5134 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5135 #endif /* USDT2 */
5137 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5138 #ifndef USDT2
5139 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5140 #else /* USDT2 */
5141 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5142 (void **) vm, penv, args);
5143 #endif /* USDT2 */
5145 jint result = JNI_ERR;
5146 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5148 // We're about to use Atomic::xchg for synchronization. Some Zero
5149 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5150 // but __sync_lock_test_and_set is not guaranteed to do what we want
5151 // on all architectures. So we check it works before relying on it.
5152 #if defined(ZERO) && defined(ASSERT)
5153 {
5154 jint a = 0xcafebabe;
5155 jint b = Atomic::xchg(0xdeadbeef, &a);
5156 void *c = &a;
5157 void *d = Atomic::xchg_ptr(&b, &c);
5158 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5159 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5160 }
5161 #endif // ZERO && ASSERT
5163 // At the moment it's only possible to have one Java VM,
5164 // since some of the runtime state is in global variables.
5166 // We cannot use our mutex locks here, since they only work on
5167 // Threads. We do an atomic compare and exchange to ensure only
5168 // one thread can call this method at a time
5170 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5171 // the add/dec implementations are dependent on whether we are running
5172 // on a multiprocessor, and at this stage of initialization the os::is_MP
5173 // function used to determine this will always return false. Atomic::xchg
5174 // does not have this problem.
5175 if (Atomic::xchg(1, &vm_created) == 1) {
5176 return JNI_EEXIST; // already created, or create attempt in progress
5177 }
5178 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5179 return JNI_ERR; // someone tried and failed and retry not allowed.
5180 }
5182 assert(vm_created == 1, "vm_created is true during the creation");
5184 /**
5185 * Certain errors during initialization are recoverable and do not
5186 * prevent this method from being called again at a later time
5187 * (perhaps with different arguments). However, at a certain
5188 * point during initialization if an error occurs we cannot allow
5189 * this function to be called again (or it will crash). In those
5190 * situations, the 'canTryAgain' flag is set to false, which atomically
5191 * sets safe_to_recreate_vm to 1, such that any new call to
5192 * JNI_CreateJavaVM will immediately fail using the above logic.
5193 */
5194 bool can_try_again = true;
5196 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5197 if (result == JNI_OK) {
5198 JavaThread *thread = JavaThread::current();
5199 /* thread is thread_in_vm here */
5200 *vm = (JavaVM *)(&main_vm);
5201 *(JNIEnv**)penv = thread->jni_environment();
5203 // Tracks the time application was running before GC
5204 RuntimeService::record_application_start();
5206 // Notify JVMTI
5207 if (JvmtiExport::should_post_thread_life()) {
5208 JvmtiExport::post_thread_start(thread);
5209 }
5211 EventThreadStart event;
5212 if (event.should_commit()) {
5213 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5214 event.commit();
5215 }
5217 #ifndef PRODUCT
5218 #ifndef CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED
5219 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()
5220 #endif
5222 // Check if we should compile all classes on bootclasspath
5223 if (CompileTheWorld) ClassLoader::compile_the_world();
5224 if (ReplayCompiles) ciReplay::replay(thread);
5226 // Some platforms (like Win*) need a wrapper around these test
5227 // functions in order to properly handle error conditions.
5228 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);
5229 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);
5230 #endif
5232 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5233 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5234 } else {
5235 if (can_try_again) {
5236 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5237 safe_to_recreate_vm = 1;
5238 }
5240 // Creation failed. We must reset vm_created
5241 *vm = 0;
5242 *(JNIEnv**)penv = 0;
5243 // reset vm_created last to avoid race condition. Use OrderAccess to
5244 // control both compiler and architectural-based reordering.
5245 OrderAccess::release_store(&vm_created, 0);
5246 }
5248 return result;
5249 }
5251 #ifndef USDT2
5252 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5253 JavaVM**, jsize, jsize*);
5254 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5255 #endif /* !USDT2 */
5257 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5258 // See bug 4367188, the wrapper can sometimes cause VM crashes
5259 // JNIWrapper("GetCreatedJavaVMs");
5260 #ifndef USDT2
5261 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5262 vm_buf, bufLen, numVMs);
5263 #else /* USDT2 */
5264 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5265 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5266 #endif /* USDT2 */
5267 if (vm_created) {
5268 if (numVMs != NULL) *numVMs = 1;
5269 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5270 } else {
5271 if (numVMs != NULL) *numVMs = 0;
5272 }
5273 #ifndef USDT2
5274 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5275 #else /* USDT2 */
5276 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5277 JNI_OK);
5278 #endif /* USDT2 */
5279 return JNI_OK;
5280 }
5282 extern "C" {
5284 #ifndef USDT2
5285 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5286 #else /* USDT2 */
5287 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5288 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5289 #endif /* USDT2 */
5291 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5292 #ifndef USDT2
5293 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5294 #else /* USDT2 */
5295 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5296 vm);
5297 #endif /* USDT2 */
5298 jint res = JNI_ERR;
5299 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5301 if (!vm_created) {
5302 res = JNI_ERR;
5303 return res;
5304 }
5306 JNIWrapper("DestroyJavaVM");
5307 JNIEnv *env;
5308 JavaVMAttachArgs destroyargs;
5309 destroyargs.version = CurrentVersion;
5310 destroyargs.name = (char *)"DestroyJavaVM";
5311 destroyargs.group = NULL;
5312 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5313 if (res != JNI_OK) {
5314 return res;
5315 }
5317 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5318 JavaThread* thread = JavaThread::current();
5319 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5320 if (Threads::destroy_vm()) {
5321 // Should not change thread state, VM is gone
5322 vm_created = false;
5323 res = JNI_OK;
5324 return res;
5325 } else {
5326 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5327 res = JNI_ERR;
5328 return res;
5329 }
5330 }
5333 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5334 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5336 // Check below commented out from JDK1.2fcs as well
5337 /*
5338 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5339 return JNI_EVERSION;
5340 }
5341 */
5343 Thread* t = ThreadLocalStorage::get_thread_slow();
5344 if (t != NULL) {
5345 // If the thread has been attached this operation is a no-op
5346 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5347 return JNI_OK;
5348 }
5350 // Create a thread and mark it as attaching so it will be skipped by the
5351 // ThreadsListEnumerator - see CR 6404306
5352 JavaThread* thread = new JavaThread(true);
5354 // Set correct safepoint info. The thread is going to call into Java when
5355 // initializing the Java level thread object. Hence, the correct state must
5356 // be set in order for the Safepoint code to deal with it correctly.
5357 thread->set_thread_state(_thread_in_vm);
5358 // Must do this before initialize_thread_local_storage
5359 thread->record_stack_base_and_size();
5361 thread->initialize_thread_local_storage();
5363 if (!os::create_attached_thread(thread)) {
5364 delete thread;
5365 return JNI_ERR;
5366 }
5367 // Enable stack overflow checks
5368 thread->create_stack_guard_pages();
5370 thread->initialize_tlab();
5372 thread->cache_global_variables();
5374 // Crucial that we do not have a safepoint check for this thread, since it has
5375 // not been added to the Thread list yet.
5376 { Threads_lock->lock_without_safepoint_check();
5377 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5378 // avoid this thread trying to do a GC before it is added to the thread-list
5379 thread->set_active_handles(JNIHandleBlock::allocate_block());
5380 Threads::add(thread, daemon);
5381 Threads_lock->unlock();
5382 }
5383 // Create thread group and name info from attach arguments
5384 oop group = NULL;
5385 char* thread_name = NULL;
5386 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5387 group = JNIHandles::resolve(args->group);
5388 thread_name = args->name; // may be NULL
5389 }
5390 if (group == NULL) group = Universe::main_thread_group();
5392 // Create Java level thread object and attach it to this thread
5393 bool attach_failed = false;
5394 {
5395 EXCEPTION_MARK;
5396 HandleMark hm(THREAD);
5397 Handle thread_group(THREAD, group);
5398 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5399 if (HAS_PENDING_EXCEPTION) {
5400 CLEAR_PENDING_EXCEPTION;
5401 // cleanup outside the handle mark.
5402 attach_failed = true;
5403 }
5404 }
5406 if (attach_failed) {
5407 // Added missing cleanup
5408 thread->cleanup_failed_attach_current_thread();
5409 return JNI_ERR;
5410 }
5412 // mark the thread as no longer attaching
5413 // this uses a fence to push the change through so we don't have
5414 // to regrab the threads_lock
5415 thread->set_done_attaching_via_jni();
5417 // Set java thread status.
5418 java_lang_Thread::set_thread_status(thread->threadObj(),
5419 java_lang_Thread::RUNNABLE);
5421 // Notify the debugger
5422 if (JvmtiExport::should_post_thread_life()) {
5423 JvmtiExport::post_thread_start(thread);
5424 }
5426 EventThreadStart event;
5427 if (event.should_commit()) {
5428 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5429 event.commit();
5430 }
5432 *(JNIEnv**)penv = thread->jni_environment();
5434 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5435 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5436 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5437 // needed.
5439 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5441 // Perform any platform dependent FPU setup
5442 os::setup_fpu();
5444 return JNI_OK;
5445 }
5448 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5449 #ifndef USDT2
5450 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5451 #else /* USDT2 */
5452 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5453 vm, penv, _args);
5454 #endif /* USDT2 */
5455 if (!vm_created) {
5456 #ifndef USDT2
5457 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5458 #else /* USDT2 */
5459 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5460 (uint32_t) JNI_ERR);
5461 #endif /* USDT2 */
5462 return JNI_ERR;
5463 }
5465 JNIWrapper("AttachCurrentThread");
5466 jint ret = attach_current_thread(vm, penv, _args, false);
5467 #ifndef USDT2
5468 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5469 #else /* USDT2 */
5470 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5471 ret);
5472 #endif /* USDT2 */
5473 return ret;
5474 }
5477 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5478 #ifndef USDT2
5479 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5480 #else /* USDT2 */
5481 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5482 vm);
5483 #endif /* USDT2 */
5484 VM_Exit::block_if_vm_exited();
5486 JNIWrapper("DetachCurrentThread");
5488 // If the thread has been deattacted the operations is a no-op
5489 if (ThreadLocalStorage::thread() == NULL) {
5490 #ifndef USDT2
5491 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5492 #else /* USDT2 */
5493 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5494 JNI_OK);
5495 #endif /* USDT2 */
5496 return JNI_OK;
5497 }
5499 JavaThread* thread = JavaThread::current();
5500 if (thread->has_last_Java_frame()) {
5501 #ifndef USDT2
5502 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5503 #else /* USDT2 */
5504 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5505 (uint32_t) JNI_ERR);
5506 #endif /* USDT2 */
5507 // Can't detach a thread that's running java, that can't work.
5508 return JNI_ERR;
5509 }
5511 // Safepoint support. Have to do call-back to safepoint code, if in the
5512 // middel of a safepoint operation
5513 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5515 // XXX: Note that JavaThread::exit() call below removes the guards on the
5516 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5517 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5518 // of the guards is visible in jni_AttachCurrentThread above,
5519 // the removal of the guards is buried below in JavaThread::exit()
5520 // here. The abstraction should be more symmetrically either exposed
5521 // or hidden (e.g. it could probably be hidden in the same
5522 // (platform-dependent) methods where we do alternate stack
5523 // maintenance work?)
5524 thread->exit(false, JavaThread::jni_detach);
5525 delete thread;
5527 #ifndef USDT2
5528 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5529 #else /* USDT2 */
5530 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5531 JNI_OK);
5532 #endif /* USDT2 */
5533 return JNI_OK;
5534 }
5536 #ifndef USDT2
5537 DT_RETURN_MARK_DECL(GetEnv, jint);
5538 #else /* USDT2 */
5539 DT_RETURN_MARK_DECL(GetEnv, jint
5540 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5541 #endif /* USDT2 */
5543 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5544 #ifndef USDT2
5545 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5546 #else /* USDT2 */
5547 HOTSPOT_JNI_GETENV_ENTRY(
5548 vm, penv, version);
5549 #endif /* USDT2 */
5550 jint ret = JNI_ERR;
5551 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5553 if (!vm_created) {
5554 *penv = NULL;
5555 ret = JNI_EDETACHED;
5556 return ret;
5557 }
5559 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5560 return ret;
5561 }
5563 #ifndef JVMPI_VERSION_1
5564 // need these in order to be polite about older agents
5565 #define JVMPI_VERSION_1 ((jint)0x10000001)
5566 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5567 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5568 #endif // !JVMPI_VERSION_1
5570 Thread* thread = ThreadLocalStorage::thread();
5571 if (thread != NULL && thread->is_Java_thread()) {
5572 if (Threads::is_supported_jni_version_including_1_1(version)) {
5573 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5574 ret = JNI_OK;
5575 return ret;
5577 } else if (version == JVMPI_VERSION_1 ||
5578 version == JVMPI_VERSION_1_1 ||
5579 version == JVMPI_VERSION_1_2) {
5580 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5581 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5582 ret = JNI_EVERSION;
5583 return ret;
5584 } else if (JvmtiExport::is_jvmdi_version(version)) {
5585 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5586 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5587 ret = JNI_EVERSION;
5588 return ret;
5589 } else {
5590 *penv = NULL;
5591 ret = JNI_EVERSION;
5592 return ret;
5593 }
5594 } else {
5595 *penv = NULL;
5596 ret = JNI_EDETACHED;
5597 return ret;
5598 }
5599 }
5602 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5603 #ifndef USDT2
5604 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5605 #else /* USDT2 */
5606 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5607 vm, penv, _args);
5608 #endif /* USDT2 */
5609 if (!vm_created) {
5610 #ifndef USDT2
5611 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5612 #else /* USDT2 */
5613 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5614 (uint32_t) JNI_ERR);
5615 #endif /* USDT2 */
5616 return JNI_ERR;
5617 }
5619 JNIWrapper("AttachCurrentThreadAsDaemon");
5620 jint ret = attach_current_thread(vm, penv, _args, true);
5621 #ifndef USDT2
5622 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5623 #else /* USDT2 */
5624 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5625 ret);
5626 #endif /* USDT2 */
5627 return ret;
5628 }
5631 } // End extern "C"
5633 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5634 NULL,
5635 NULL,
5636 NULL,
5638 jni_DestroyJavaVM,
5639 jni_AttachCurrentThread,
5640 jni_DetachCurrentThread,
5641 jni_GetEnv,
5642 jni_AttachCurrentThreadAsDaemon
5643 };