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 */
25
26 #include "precompiled.hpp"
27 #include "ci/ciReplay.hpp"
28 #include "classfile/altHashing.hpp"
29 #include "classfile/classLoader.hpp"
30 #include "classfile/javaClasses.hpp"
31 #include "classfile/symbolTable.hpp"
32 #include "classfile/systemDictionary.hpp"
33 #include "classfile/vmSymbols.hpp"
34 #include "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
95
96 static jint CurrentVersion = JNI_VERSION_1_8;
97
98
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 )
143
144 #else /* USDT2 */
145
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 */
168
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 )
175
176
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)
191
192 #define COMMA ,
193
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) )
208
209
210 // out-of-line helpers for class jfieldIDWorkaround:
211
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 }
231
232
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 }
259
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 }
272
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 }
295
296 // Wrapper to trace JNI functions
297
298 #ifdef ASSERT
299 Histogram* JNIHistogram;
300 static volatile jint JNIHistogram_lock = 0;
301
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 };
314
315 class JNIHistogramElement : public HistogramElement {
316 public:
317 JNIHistogramElement(const char* name);
318 };
319
320 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
321 _name = elementName;
322 uintx count = 0;
323
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 }
333
334
335 if(JNIHistogram == NULL)
336 JNIHistogram = new Histogram("JNI Call Counts",100);
337
338 JNIHistogram->add_element(this);
339 Atomic::dec(&JNIHistogram_lock);
340 }
341
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
350
351
352 // Implementation of JNI entries
353
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 */
360
361 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
362 const jbyte *buf, jsize bufLen))
363 JNIWrapper("DefineClass");
364
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);
374
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));
390
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);
403
404 if (TraceClassResolution && k != NULL) {
405 trace_class_resolution(k);
406 }
407
408 cls = (jclass)JNIHandles::make_local(
409 env, k->java_mirror());
410 return cls;
411 JNI_END
412
413
414
415 static bool first_time_FindClass = true;
416
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 */
423
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 */
432
433 jclass result = NULL;
434 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
435
436 // Remember if we are the first invocation of jni_FindClass
437 bool first_time = first_time_FindClass;
438 first_time_FindClass = false;
439
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 }
445
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 }
477
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);
481
482 if (TraceClassResolution && result != NULL) {
483 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
484 }
485
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();
491
492 return result;
493 JNI_END
494
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 */
501
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);
512
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;
517
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);
527
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
535
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 */
542
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);
553
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);
560
561 KlassHandle k1(THREAD, k);
562 // Make sure class is initialized before handing id's out to fields
563 k1()->initialize(CHECK_NULL);
564
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 }
575
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
584
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 */
591
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);
602
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
614
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 */
621
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);
632
633 oop mirror = JNIHandles::resolve_non_null(sub);
634 // primitive classes return NULL
635 if (java_lang_Class::is_primitive(mirror)) return NULL;
636
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;
643
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
655
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
690
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 */
697
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);
708
709 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
710 ShouldNotReachHere();
711 JNI_END
712
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 */
719
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);
730
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
738
739
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.
748
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 }
753
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
773
774
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
825
826
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 */
835
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
850
851
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
864
865
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
899
900
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
931
932
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
951
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
969
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
986
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
1006
1007
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
1025
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
1049
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
1077
1078
1079 class JNI_ArgumentPusher : public SignatureIterator {
1080 protected:
1081 JavaCallArguments* _arguments;
1082
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;
1092
1093 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1094 this->_return_type = T_ILLEGAL;
1095 _arguments = NULL;
1096 }
1097
1098 public:
1099 virtual void iterate( uint64_t fingerprint ) = 0;
1100
1101 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1102
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() { }
1114
1115 JavaCallArguments* arguments() { return _arguments; }
1116 void push_receiver(Handle h) { _arguments->push_oop(h); }
1117 };
1118
1119
1120 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1121 protected:
1122 va_list _ap;
1123
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)); }
1129
1130 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1131
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)); }
1137
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 }
1147
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 }
1157
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);
1164
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 };
1200
1201
1202 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1203 protected:
1204 const jvalue *_ap;
1205
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); }
1211
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)); }
1216
1217 inline void set_ap(const jvalue *rap) { _ap = rap; }
1218
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 }
1228
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 };
1278
1279
1280 enum JNICallType {
1281 JNI_STATIC,
1282 JNI_VIRTUAL,
1283 JNI_NONVIRTUAL
1284 };
1285
1286
1287
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));
1290
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);
1297
1298 assert(method->is_static(), "method should be static");
1299
1300 // Fill out JavaCallArguments object
1301 args->iterate( Fingerprinter(method).fingerprint() );
1302 // Initialize result type
1303 result->set_type(args->get_ret_type());
1304
1305 // Invoke the method. Result is returned as oop.
1306 JavaCalls::call(result, method, &java_args, CHECK);
1307
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 }
1313
1314
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);
1321
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 (!(holder)->is_interface()) {
1329 // non-interface call -- for that little speed boost, don't handlize
1330 debug_only(No_Safepoint_Verifier nosafepoint;)
1331 if (call_type == JNI_VIRTUAL) {
1332 // jni_GetMethodID makes sure class is linked and initialized
1333 // so m should have a valid vtable index.
1334 assert(!m->has_itable_index(), "");
1335 int vtbl_index = m->vtable_index();
1336 if (vtbl_index != Method::nonvirtual_vtable_index) {
1337 Klass* k = h_recv->klass();
1338 // k might be an arrayKlassOop but all vtables start at
1339 // the same place. The cast is to avoid virtual call and assertion.
1340 InstanceKlass *ik = (InstanceKlass*)k;
1341 selected_method = ik->method_at_vtable(vtbl_index);
1342 } else {
1343 // final method
1344 selected_method = m;
1345 }
1346 } else {
1347 // JNI_NONVIRTUAL call
1348 selected_method = m;
1349 }
1350 } else {
1351 // interface call
1352 KlassHandle h_holder(THREAD, holder);
1353
1354 if (call_type == JNI_VIRTUAL) {
1355 int itbl_index = m->itable_index();
1356 Klass* k = h_recv->klass();
1357 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1358 } else {
1359 selected_method = m;
1360 }
1361 }
1362 }
1363
1364 methodHandle method(THREAD, selected_method);
1365
1366 // Create object to hold arguments for the JavaCall, and associate it with
1367 // the jni parser
1368 ResourceMark rm(THREAD);
1369 JavaCallArguments java_args(number_of_parameters);
1370 args->set_java_argument_object(&java_args);
1371
1372 // handle arguments
1373 assert(!method->is_static(), "method should not be static");
1374 args->push_receiver(h_recv); // Push jobject handle
1375
1376 // Fill out JavaCallArguments object
1377 args->iterate( Fingerprinter(method).fingerprint() );
1378 // Initialize result type
1379 result->set_type(args->get_ret_type());
1380
1381 // Invoke the method. Result is returned as oop.
1382 JavaCalls::call(result, method, &java_args, CHECK);
1383
1384 // Convert result
1385 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1386 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1387 }
1388 }
1389
1390
1391 static instanceOop alloc_object(jclass clazz, TRAPS) {
1392 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1393 k()->check_valid_for_instantiation(false, CHECK_NULL);
1394 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1395 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1396 return ih;
1397 }
1398
1399 #ifndef USDT2
1400 DT_RETURN_MARK_DECL(AllocObject, jobject);
1401 #else /* USDT2 */
1402 DT_RETURN_MARK_DECL(AllocObject, jobject
1403 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1404 #endif /* USDT2 */
1405
1406 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1407 JNIWrapper("AllocObject");
1408
1409 #ifndef USDT2
1410 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1411 #else /* USDT2 */
1412 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1413 env, clazz);
1414 #endif /* USDT2 */
1415 jobject ret = NULL;
1416 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1417
1418 instanceOop i = alloc_object(clazz, CHECK_NULL);
1419 ret = JNIHandles::make_local(env, i);
1420 return ret;
1421 JNI_END
1422
1423 #ifndef USDT2
1424 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1425 #else /* USDT2 */
1426 DT_RETURN_MARK_DECL(NewObjectA, jobject
1427 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1428 #endif /* USDT2 */
1429
1430 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1431 JNIWrapper("NewObjectA");
1432 #ifndef USDT2
1433 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1434 #else /* USDT2 */
1435 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1436 env, clazz, (uintptr_t) methodID);
1437 #endif /* USDT2 */
1438 jobject obj = NULL;
1439 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1440
1441 instanceOop i = alloc_object(clazz, CHECK_NULL);
1442 obj = JNIHandles::make_local(env, i);
1443 JavaValue jvalue(T_VOID);
1444 JNI_ArgumentPusherArray ap(methodID, args);
1445 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1446 return obj;
1447 JNI_END
1448
1449 #ifndef USDT2
1450 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1451 #else /* USDT2 */
1452 DT_RETURN_MARK_DECL(NewObjectV, jobject
1453 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1454 #endif /* USDT2 */
1455
1456 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1457 JNIWrapper("NewObjectV");
1458 #ifndef USDT2
1459 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1460 #else /* USDT2 */
1461 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1462 env, clazz, (uintptr_t) methodID);
1463 #endif /* USDT2 */
1464 jobject obj = NULL;
1465 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1466
1467 instanceOop i = alloc_object(clazz, CHECK_NULL);
1468 obj = JNIHandles::make_local(env, i);
1469 JavaValue jvalue(T_VOID);
1470 JNI_ArgumentPusherVaArg ap(methodID, args);
1471 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1472 return obj;
1473 JNI_END
1474
1475 #ifndef USDT2
1476 DT_RETURN_MARK_DECL(NewObject, jobject);
1477 #else /* USDT2 */
1478 DT_RETURN_MARK_DECL(NewObject, jobject
1479 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1480 #endif /* USDT2 */
1481
1482 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1483 JNIWrapper("NewObject");
1484 #ifndef USDT2
1485 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1486 #else /* USDT2 */
1487 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1488 env, clazz, (uintptr_t) methodID);
1489 #endif /* USDT2 */
1490 jobject obj = NULL;
1491 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1492
1493 instanceOop i = alloc_object(clazz, CHECK_NULL);
1494 obj = JNIHandles::make_local(env, i);
1495 va_list args;
1496 va_start(args, methodID);
1497 JavaValue jvalue(T_VOID);
1498 JNI_ArgumentPusherVaArg ap(methodID, args);
1499 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1500 va_end(args);
1501 return obj;
1502 JNI_END
1503
1504
1505 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1506 JNIWrapper("GetObjectClass");
1507 #ifndef USDT2
1508 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1509 #else /* USDT2 */
1510 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1511 env, obj);
1512 #endif /* USDT2 */
1513 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1514 jclass ret =
1515 (jclass) JNIHandles::make_local(env, k->java_mirror());
1516 #ifndef USDT2
1517 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1518 #else /* USDT2 */
1519 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1520 ret);
1521 #endif /* USDT2 */
1522 return ret;
1523 JNI_END
1524
1525 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1526 JNIWrapper("IsInstanceOf");
1527 #ifndef USDT2
1528 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1529 #else /* USDT2 */
1530 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1531 env, obj, clazz);
1532 #endif /* USDT2 */
1533 jboolean ret = JNI_TRUE;
1534 if (obj != NULL) {
1535 ret = JNI_FALSE;
1536 Klass* k = java_lang_Class::as_Klass(
1537 JNIHandles::resolve_non_null(clazz));
1538 if (k != NULL) {
1539 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1540 }
1541 }
1542 #ifndef USDT2
1543 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1544 #else /* USDT2 */
1545 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1546 ret);
1547 #endif /* USDT2 */
1548 return ret;
1549 JNI_END
1550
1551
1552 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1553 const char *sig, bool is_static, TRAPS) {
1554 // %%%% This code should probably just call into a method in the LinkResolver
1555 //
1556 // The class should have been loaded (we have an instance of the class
1557 // passed in) so the method and signature should already be in the symbol
1558 // table. If they're not there, the method doesn't exist.
1559 const char *name_to_probe = (name_str == NULL)
1560 ? vmSymbols::object_initializer_name()->as_C_string()
1561 : name_str;
1562 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1563 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1564
1565 if (name == NULL || signature == NULL) {
1566 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1567 }
1568
1569 // Throw a NoSuchMethodError exception if we have an instance of a
1570 // primitive java.lang.Class
1571 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1572 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1573 }
1574
1575 KlassHandle klass(THREAD,
1576 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1577
1578 // Make sure class is linked and initialized before handing id's out to
1579 // Method*s.
1580 klass()->initialize(CHECK_NULL);
1581
1582 Method* m;
1583 if (name == vmSymbols::object_initializer_name() ||
1584 name == vmSymbols::class_initializer_name()) {
1585 // Never search superclasses for constructors
1586 if (klass->oop_is_instance()) {
1587 m = InstanceKlass::cast(klass())->find_method(name, signature);
1588 } else {
1589 m = NULL;
1590 }
1591 } else {
1592 m = klass->lookup_method(name, signature);
1593 if (m == NULL && klass->oop_is_instance()) {
1594 m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature);
1595 }
1596 }
1597 if (m == NULL || (m->is_static() != is_static)) {
1598 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1599 }
1600 return m->jmethod_id();
1601 }
1602
1603
1604 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1605 const char *name, const char *sig))
1606 JNIWrapper("GetMethodID");
1607 #ifndef USDT2
1608 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1609 #else /* USDT2 */
1610 HOTSPOT_JNI_GETMETHODID_ENTRY(
1611 env, clazz, (char *) name, (char *) sig);
1612 #endif /* USDT2 */
1613 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1614 #ifndef USDT2
1615 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1616 #else /* USDT2 */
1617 HOTSPOT_JNI_GETMETHODID_RETURN(
1618 (uintptr_t) ret);
1619 #endif /* USDT2 */
1620 return ret;
1621 JNI_END
1622
1623
1624 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1625 const char *name, const char *sig))
1626 JNIWrapper("GetStaticMethodID");
1627 #ifndef USDT2
1628 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1629 #else /* USDT2 */
1630 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1631 env, (char *) clazz, (char *) name, (char *)sig);
1632 #endif /* USDT2 */
1633 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1634 #ifndef USDT2
1635 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1636 #else /* USDT2 */
1637 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1638 (uintptr_t) ret);
1639 #endif /* USDT2 */
1640 return ret;
1641 JNI_END
1642
1643
1644
1645 //
1646 // Calling Methods
1647 //
1648
1649 #ifndef USDT2
1650 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1651 \
1652 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1653 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1654 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1655 \
1656 JNI_ENTRY(ResultType, \
1657 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1658 JNIWrapper("Call" XSTR(Result) "Method"); \
1659 \
1660 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1661 ResultType ret = 0;\
1662 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1663 (const ResultType&)ret);\
1664 \
1665 va_list args; \
1666 va_start(args, methodID); \
1667 JavaValue jvalue(Tag); \
1668 JNI_ArgumentPusherVaArg ap(methodID, args); \
1669 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1670 va_end(args); \
1671 ret = jvalue.get_##ResultType(); \
1672 return ret;\
1673 JNI_END \
1674 \
1675 \
1676 JNI_ENTRY(ResultType, \
1677 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1678 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1679 \
1680 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1681 ResultType ret = 0;\
1682 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1683 (const ResultType&)ret);\
1684 \
1685 JavaValue jvalue(Tag); \
1686 JNI_ArgumentPusherVaArg ap(methodID, args); \
1687 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1688 ret = jvalue.get_##ResultType(); \
1689 return ret;\
1690 JNI_END \
1691 \
1692 \
1693 JNI_ENTRY(ResultType, \
1694 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1695 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1696 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1697 ResultType ret = 0;\
1698 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1699 (const ResultType&)ret);\
1700 \
1701 JavaValue jvalue(Tag); \
1702 JNI_ArgumentPusherArray ap(methodID, args); \
1703 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1704 ret = jvalue.get_##ResultType(); \
1705 return ret;\
1706 JNI_END
1707
1708 // the runtime type of subword integral basic types is integer
1709 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1710 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1711 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1712 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1713
1714 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1715 DEFINE_CALLMETHOD(jint, Int, T_INT)
1716 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1717 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1718 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1719
1720 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1721 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1722 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1723
1724 #else /* USDT2 */
1725
1726 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1727 , EntryProbe, ReturnProbe) \
1728 \
1729 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1730 , ReturnProbe); \
1731 \
1732 JNI_ENTRY(ResultType, \
1733 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1734 JNIWrapper("Call" XSTR(Result) "Method"); \
1735 \
1736 EntryProbe; \
1737 ResultType ret = 0;\
1738 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1739 (const ResultType&)ret);\
1740 \
1741 va_list args; \
1742 va_start(args, methodID); \
1743 JavaValue jvalue(Tag); \
1744 JNI_ArgumentPusherVaArg ap(methodID, args); \
1745 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1746 va_end(args); \
1747 ret = jvalue.get_##ResultType(); \
1748 return ret;\
1749 JNI_END
1750
1751 // the runtime type of subword integral basic types is integer
1752 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1753 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1754 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1755 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1756 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1757 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1758 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1759 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1760 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1761 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1762 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1763 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1764
1765 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1766 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1767 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1768 DEFINE_CALLMETHOD(jint, Int, T_INT,
1769 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1770 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1771 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1772 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1773 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1774 // Float and double probes don't return value because dtrace doesn't currently support it
1775 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1776 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1777 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1778 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1779 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1780 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1781
1782 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1783 , EntryProbe, ReturnProbe) \
1784 \
1785 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1786 , ReturnProbe); \
1787 \
1788 JNI_ENTRY(ResultType, \
1789 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1790 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1791 \
1792 EntryProbe;\
1793 ResultType ret = 0;\
1794 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1795 (const ResultType&)ret);\
1796 \
1797 JavaValue jvalue(Tag); \
1798 JNI_ArgumentPusherVaArg ap(methodID, args); \
1799 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1800 ret = jvalue.get_##ResultType(); \
1801 return ret;\
1802 JNI_END
1803
1804 // the runtime type of subword integral basic types is integer
1805 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1806 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1807 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1808 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1809 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1810 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1811 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1812 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1813 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1814 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1815 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1816 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1817
1818 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1819 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1820 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1821 DEFINE_CALLMETHODV(jint, Int, T_INT,
1822 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1823 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1824 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1825 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1826 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1827 // Float and double probes don't return value because dtrace doesn't currently support it
1828 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1829 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1830 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1831 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1832 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1833 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1834
1835 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1836 , EntryProbe, ReturnProbe) \
1837 \
1838 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1839 , ReturnProbe); \
1840 \
1841 JNI_ENTRY(ResultType, \
1842 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1843 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1844 EntryProbe; \
1845 ResultType ret = 0;\
1846 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1847 (const ResultType&)ret);\
1848 \
1849 JavaValue jvalue(Tag); \
1850 JNI_ArgumentPusherArray ap(methodID, args); \
1851 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1852 ret = jvalue.get_##ResultType(); \
1853 return ret;\
1854 JNI_END
1855
1856 // the runtime type of subword integral basic types is integer
1857 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1858 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1859 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1860 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1861 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1862 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1863 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1864 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1865 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1866 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1867 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1868 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1869
1870 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1871 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1872 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1873 DEFINE_CALLMETHODA(jint, Int, T_INT,
1874 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1875 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1876 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1877 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1878 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1879 // Float and double probes don't return value because dtrace doesn't currently support it
1880 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1881 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1882 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1883 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1884 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1885 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1886
1887 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1888 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1889 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1890
1891 #endif /* USDT2 */
1892
1893 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1894 JNIWrapper("CallVoidMethod");
1895 #ifndef USDT2
1896 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1897 #else /* USDT2 */
1898 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1899 env, obj, (uintptr_t) methodID);
1900 #endif /* USDT2 */
1901 DT_VOID_RETURN_MARK(CallVoidMethod);
1902
1903 va_list args;
1904 va_start(args, methodID);
1905 JavaValue jvalue(T_VOID);
1906 JNI_ArgumentPusherVaArg ap(methodID, args);
1907 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1908 va_end(args);
1909 JNI_END
1910
1911
1912 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1913 JNIWrapper("CallVoidMethodV");
1914 #ifndef USDT2
1915 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1916 #else /* USDT2 */
1917 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1918 env, obj, (uintptr_t) methodID);
1919 #endif /* USDT2 */
1920 DT_VOID_RETURN_MARK(CallVoidMethodV);
1921
1922 JavaValue jvalue(T_VOID);
1923 JNI_ArgumentPusherVaArg ap(methodID, args);
1924 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1925 JNI_END
1926
1927
1928 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1929 JNIWrapper("CallVoidMethodA");
1930 #ifndef USDT2
1931 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1932 #else /* USDT2 */
1933 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1934 env, obj, (uintptr_t) methodID);
1935 #endif /* USDT2 */
1936 DT_VOID_RETURN_MARK(CallVoidMethodA);
1937
1938 JavaValue jvalue(T_VOID);
1939 JNI_ArgumentPusherArray ap(methodID, args);
1940 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1941 JNI_END
1942
1943
1944 #ifndef USDT2
1945 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1946 \
1947 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1948 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1949 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1950 \
1951 JNI_ENTRY(ResultType, \
1952 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1953 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1954 \
1955 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1956 ResultType ret;\
1957 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1958 (const ResultType&)ret);\
1959 \
1960 va_list args; \
1961 va_start(args, methodID); \
1962 JavaValue jvalue(Tag); \
1963 JNI_ArgumentPusherVaArg ap(methodID, args); \
1964 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1965 va_end(args); \
1966 ret = jvalue.get_##ResultType(); \
1967 return ret;\
1968 JNI_END \
1969 \
1970 JNI_ENTRY(ResultType, \
1971 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1972 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
1973 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
1974 ResultType ret;\
1975 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1976 (const ResultType&)ret);\
1977 \
1978 JavaValue jvalue(Tag); \
1979 JNI_ArgumentPusherVaArg ap(methodID, args); \
1980 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1981 ret = jvalue.get_##ResultType(); \
1982 return ret;\
1983 JNI_END \
1984 \
1985 JNI_ENTRY(ResultType, \
1986 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1987 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1988 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
1989 ResultType ret;\
1990 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1991 (const ResultType&)ret);\
1992 \
1993 JavaValue jvalue(Tag); \
1994 JNI_ArgumentPusherArray ap(methodID, args); \
1995 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1996 ret = jvalue.get_##ResultType(); \
1997 return ret;\
1998 JNI_END
1999
2000 // the runtime type of subword integral basic types is integer
2001 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2002 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2003 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2004 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2005
2006 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2007 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2008 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2009 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2010 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2011
2012
2013 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2014 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2015 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2016
2017 #else /* USDT2 */
2018
2019 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2020 , EntryProbe, ReturnProbe) \
2021 \
2022 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2023 , ReturnProbe);\
2024 \
2025 JNI_ENTRY(ResultType, \
2026 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2027 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2028 \
2029 EntryProbe;\
2030 ResultType ret;\
2031 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2032 (const ResultType&)ret);\
2033 \
2034 va_list args; \
2035 va_start(args, methodID); \
2036 JavaValue jvalue(Tag); \
2037 JNI_ArgumentPusherVaArg ap(methodID, args); \
2038 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2039 va_end(args); \
2040 ret = jvalue.get_##ResultType(); \
2041 return ret;\
2042 JNI_END
2043
2044 // the runtime type of subword integral basic types is integer
2045 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2046 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2047 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2048 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2049 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2050 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2051 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2052 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2053 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2054 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2055 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2056 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2057
2058 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2059 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2060 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2061 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2062 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2063 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2064 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2065 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2066 // Float and double probes don't return value because dtrace doesn't currently support it
2067 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2068 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2069 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2070 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2071 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2072 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2073 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2074
2075 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2076 , EntryProbe, ReturnProbe) \
2077 \
2078 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2079 , ReturnProbe);\
2080 \
2081 JNI_ENTRY(ResultType, \
2082 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2083 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2084 \
2085 EntryProbe;\
2086 ResultType ret;\
2087 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2088 (const ResultType&)ret);\
2089 \
2090 JavaValue jvalue(Tag); \
2091 JNI_ArgumentPusherVaArg ap(methodID, args); \
2092 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2093 ret = jvalue.get_##ResultType(); \
2094 return ret;\
2095 JNI_END
2096
2097 // the runtime type of subword integral basic types is integer
2098 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2099 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2100 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2101 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2102 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2103 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2104 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2105 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2106 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2107 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2108 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2109 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2110
2111 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2112 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2113 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2114 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2115 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2116 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2117 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2118 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2119 // Float and double probes don't return value because dtrace doesn't currently support it
2120 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2121 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2122 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2123 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2124 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2125 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2126 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2127
2128 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2129 , EntryProbe, ReturnProbe) \
2130 \
2131 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2132 , ReturnProbe);\
2133 \
2134 JNI_ENTRY(ResultType, \
2135 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2136 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2137 \
2138 EntryProbe;\
2139 ResultType ret;\
2140 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2141 (const ResultType&)ret);\
2142 \
2143 JavaValue jvalue(Tag); \
2144 JNI_ArgumentPusherArray ap(methodID, args); \
2145 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2146 ret = jvalue.get_##ResultType(); \
2147 return ret;\
2148 JNI_END
2149
2150 // the runtime type of subword integral basic types is integer
2151 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2152 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2153 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2154 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2155 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2156 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2157 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2158 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2159 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2160 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2161 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2162 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2163
2164 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2165 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2166 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2167 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2168 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2169 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2170 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2171 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2172 // Float and double probes don't return value because dtrace doesn't currently support it
2173 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2174 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2175 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2176 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2177 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2178 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2179 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2180
2181 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2182 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2183 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2184 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2185 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2186 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2187 #endif /* USDT2 */
2188
2189 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2190 JNIWrapper("CallNonvirtualVoidMethod");
2191
2192 #ifndef USDT2
2193 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2194 env, obj, cls, methodID);
2195 #else /* USDT2 */
2196 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2197 env, obj, cls, (uintptr_t) methodID);
2198 #endif /* USDT2 */
2199 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2200
2201 va_list args;
2202 va_start(args, methodID);
2203 JavaValue jvalue(T_VOID);
2204 JNI_ArgumentPusherVaArg ap(methodID, args);
2205 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2206 va_end(args);
2207 JNI_END
2208
2209
2210 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2211 JNIWrapper("CallNonvirtualVoidMethodV");
2212
2213 #ifndef USDT2
2214 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2215 env, obj, cls, methodID);
2216 #else /* USDT2 */
2217 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2218 env, obj, cls, (uintptr_t) methodID);
2219 #endif /* USDT2 */
2220 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2221
2222 JavaValue jvalue(T_VOID);
2223 JNI_ArgumentPusherVaArg ap(methodID, args);
2224 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2225 JNI_END
2226
2227
2228 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2229 JNIWrapper("CallNonvirtualVoidMethodA");
2230 #ifndef USDT2
2231 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2232 env, obj, cls, methodID);
2233 #else /* USDT2 */
2234 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2235 env, obj, cls, (uintptr_t) methodID);
2236 #endif /* USDT2 */
2237 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2238 JavaValue jvalue(T_VOID);
2239 JNI_ArgumentPusherArray ap(methodID, args);
2240 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2241 JNI_END
2242
2243
2244 #ifndef USDT2
2245 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2246 \
2247 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2248 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2249 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2250 \
2251 JNI_ENTRY(ResultType, \
2252 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2253 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2254 \
2255 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2256 ResultType ret = 0;\
2257 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2258 (const ResultType&)ret);\
2259 \
2260 va_list args; \
2261 va_start(args, methodID); \
2262 JavaValue jvalue(Tag); \
2263 JNI_ArgumentPusherVaArg ap(methodID, args); \
2264 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2265 va_end(args); \
2266 ret = jvalue.get_##ResultType(); \
2267 return ret;\
2268 JNI_END \
2269 \
2270 JNI_ENTRY(ResultType, \
2271 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2272 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2273 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2274 ResultType ret = 0;\
2275 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2276 (const ResultType&)ret);\
2277 \
2278 JavaValue jvalue(Tag); \
2279 JNI_ArgumentPusherVaArg ap(methodID, args); \
2280 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2281 ret = jvalue.get_##ResultType(); \
2282 return ret;\
2283 JNI_END \
2284 \
2285 JNI_ENTRY(ResultType, \
2286 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2287 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2288 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2289 ResultType ret = 0;\
2290 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2291 (const ResultType&)ret);\
2292 \
2293 JavaValue jvalue(Tag); \
2294 JNI_ArgumentPusherArray ap(methodID, args); \
2295 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2296 ret = jvalue.get_##ResultType(); \
2297 return ret;\
2298 JNI_END
2299
2300 // the runtime type of subword integral basic types is integer
2301 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2302 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2303 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2304 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2305
2306 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2307 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2308 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2309 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2310 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2311
2312
2313 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2314 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2315 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2316
2317 #else /* USDT2 */
2318
2319 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2320 , EntryProbe, ResultProbe) \
2321 \
2322 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2323 , ResultProbe); \
2324 \
2325 JNI_ENTRY(ResultType, \
2326 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2327 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2328 \
2329 EntryProbe; \
2330 ResultType ret = 0;\
2331 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2332 (const ResultType&)ret);\
2333 \
2334 va_list args; \
2335 va_start(args, methodID); \
2336 JavaValue jvalue(Tag); \
2337 JNI_ArgumentPusherVaArg ap(methodID, args); \
2338 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2339 va_end(args); \
2340 ret = jvalue.get_##ResultType(); \
2341 return ret;\
2342 JNI_END
2343
2344 // the runtime type of subword integral basic types is integer
2345 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2346 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2347 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2348 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2349 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2350 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2351 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2352 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2353 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2354 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2355 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2356 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2357
2358 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2359 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2360 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2361 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2362 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2363 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2364 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2365 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2366 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2367 // Float and double probes don't return value because dtrace doesn't currently support it
2368 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2369 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2370 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2371 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2372 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2373 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2374
2375 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2376 , EntryProbe, ResultProbe) \
2377 \
2378 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2379 , ResultProbe); \
2380 \
2381 JNI_ENTRY(ResultType, \
2382 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2383 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2384 \
2385 EntryProbe; \
2386 ResultType ret = 0;\
2387 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2388 (const ResultType&)ret);\
2389 \
2390 JavaValue jvalue(Tag); \
2391 JNI_ArgumentPusherVaArg ap(methodID, args); \
2392 /* Make sure class is initialized before trying to invoke its method */ \
2393 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2394 k()->initialize(CHECK_0); \
2395 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2396 va_end(args); \
2397 ret = jvalue.get_##ResultType(); \
2398 return ret;\
2399 JNI_END
2400
2401 // the runtime type of subword integral basic types is integer
2402 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2403 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2404 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2405 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2406 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2407 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2408 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2409 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2410 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2411 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2412 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2413 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2414
2415 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2416 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2417 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2418 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2419 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2420 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2421 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2422 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2423 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2424 // Float and double probes don't return value because dtrace doesn't currently support it
2425 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2426 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2427 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2428 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2429 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2430 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2431
2432 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2433 , EntryProbe, ResultProbe) \
2434 \
2435 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2436 , ResultProbe); \
2437 \
2438 JNI_ENTRY(ResultType, \
2439 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2440 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2441 \
2442 EntryProbe; \
2443 ResultType ret = 0;\
2444 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2445 (const ResultType&)ret);\
2446 \
2447 JavaValue jvalue(Tag); \
2448 JNI_ArgumentPusherArray ap(methodID, args); \
2449 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2450 ret = jvalue.get_##ResultType(); \
2451 return ret;\
2452 JNI_END
2453
2454 // the runtime type of subword integral basic types is integer
2455 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2456 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2457 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2458 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2459 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2460 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2461 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2462 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2463 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2464 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2465 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2466 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2467
2468 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2469 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2470 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2471 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2472 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2473 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2474 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2475 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2476 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2477 // Float and double probes don't return value because dtrace doesn't currently support it
2478 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2479 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2480 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2481 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2482 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2483 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2484
2485 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2486 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2487 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2488 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2489 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2490 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2491 #endif /* USDT2 */
2492
2493 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2494 JNIWrapper("CallStaticVoidMethod");
2495 #ifndef USDT2
2496 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2497 #else /* USDT2 */
2498 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2499 env, cls, (uintptr_t) methodID);
2500 #endif /* USDT2 */
2501 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2502
2503 va_list args;
2504 va_start(args, methodID);
2505 JavaValue jvalue(T_VOID);
2506 JNI_ArgumentPusherVaArg ap(methodID, args);
2507 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2508 va_end(args);
2509 JNI_END
2510
2511
2512 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2513 JNIWrapper("CallStaticVoidMethodV");
2514 #ifndef USDT2
2515 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2516 #else /* USDT2 */
2517 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2518 env, cls, (uintptr_t) methodID);
2519 #endif /* USDT2 */
2520 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2521
2522 JavaValue jvalue(T_VOID);
2523 JNI_ArgumentPusherVaArg ap(methodID, args);
2524 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2525 JNI_END
2526
2527
2528 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2529 JNIWrapper("CallStaticVoidMethodA");
2530 #ifndef USDT2
2531 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2532 #else /* USDT2 */
2533 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2534 env, cls, (uintptr_t) methodID);
2535 #endif /* USDT2 */
2536 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2537
2538 JavaValue jvalue(T_VOID);
2539 JNI_ArgumentPusherArray ap(methodID, args);
2540 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2541 JNI_END
2542
2543
2544 //
2545 // Accessing Fields
2546 //
2547
2548
2549 #ifndef USDT2
2550 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2551 #else /* USDT2 */
2552 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2553 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2554 #endif /* USDT2 */
2555
2556 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2557 const char *name, const char *sig))
2558 JNIWrapper("GetFieldID");
2559 #ifndef USDT2
2560 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2561 #else /* USDT2 */
2562 HOTSPOT_JNI_GETFIELDID_ENTRY(
2563 env, clazz, (char *) name, (char *) sig);
2564 #endif /* USDT2 */
2565 jfieldID ret = 0;
2566 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2567
2568 // The class should have been loaded (we have an instance of the class
2569 // passed in) so the field and signature should already be in the symbol
2570 // table. If they're not there, the field doesn't exist.
2571 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2572 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2573 if (fieldname == NULL || signame == NULL) {
2574 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2575 }
2576 KlassHandle k(THREAD,
2577 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2578 // Make sure class is initialized before handing id's out to fields
2579 k()->initialize(CHECK_NULL);
2580
2581 fieldDescriptor fd;
2582 if (!k()->oop_is_instance() ||
2583 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2584 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2585 }
2586
2587 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2588 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2589 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2590 return ret;
2591 JNI_END
2592
2593
2594 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2595 JNIWrapper("GetObjectField");
2596 #ifndef USDT2
2597 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2598 #else /* USDT2 */
2599 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2600 env, obj, (uintptr_t) fieldID);
2601 #endif /* USDT2 */
2602 oop o = JNIHandles::resolve_non_null(obj);
2603 Klass* k = o->klass();
2604 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2605 // Keep JVMTI addition small and only check enabled flag here.
2606 // jni_GetField_probe() assumes that is okay to create handles.
2607 if (JvmtiExport::should_post_field_access()) {
2608 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2609 }
2610 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2611 #if INCLUDE_ALL_GCS
2612 // If G1 is enabled and we are accessing the value of the referent
2613 // field in a reference object then we need to register a non-null
2614 // referent with the SATB barrier.
2615 if (UseG1GC) {
2616 bool needs_barrier = false;
2617
2618 if (ret != NULL &&
2619 offset == java_lang_ref_Reference::referent_offset &&
2620 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2621 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2622 needs_barrier = true;
2623 }
2624
2625 if (needs_barrier) {
2626 oop referent = JNIHandles::resolve(ret);
2627 G1SATBCardTableModRefBS::enqueue(referent);
2628 }
2629 }
2630 #endif // INCLUDE_ALL_GCS
2631 #ifndef USDT2
2632 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2633 #else /* USDT2 */
2634 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2635 ret);
2636 #endif /* USDT2 */
2637 return ret;
2638 JNI_END
2639
2640
2641 #ifndef USDT2
2642 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2643 \
2644 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2645 \
2646 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2647 JNIWrapper("Get" XSTR(Result) "Field"); \
2648 \
2649 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2650 Return ret = 0;\
2651 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2652 \
2653 oop o = JNIHandles::resolve_non_null(obj); \
2654 Klass* k = o->klass(); \
2655 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2656 /* Keep JVMTI addition small and only check enabled flag here. */ \
2657 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2658 /* and creates a ResetNoHandleMark. */ \
2659 if (JvmtiExport::should_post_field_access()) { \
2660 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2661 } \
2662 ret = o->Fieldname##_field(offset); \
2663 return ret; \
2664 JNI_END
2665
2666 DEFINE_GETFIELD(jboolean, bool, Boolean)
2667 DEFINE_GETFIELD(jbyte, byte, Byte)
2668 DEFINE_GETFIELD(jchar, char, Char)
2669 DEFINE_GETFIELD(jshort, short, Short)
2670 DEFINE_GETFIELD(jint, int, Int)
2671 DEFINE_GETFIELD(jlong, long, Long)
2672 DEFINE_GETFIELD(jfloat, float, Float)
2673 DEFINE_GETFIELD(jdouble, double, Double)
2674
2675 #else /* USDT2 */
2676
2677 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2678 , EntryProbe, ReturnProbe) \
2679 \
2680 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2681 , ReturnProbe); \
2682 \
2683 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2684 JNIWrapper("Get" XSTR(Result) "Field"); \
2685 \
2686 EntryProbe; \
2687 Return ret = 0;\
2688 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2689 \
2690 oop o = JNIHandles::resolve_non_null(obj); \
2691 Klass* k = o->klass(); \
2692 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2693 /* Keep JVMTI addition small and only check enabled flag here. */ \
2694 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2695 /* and creates a ResetNoHandleMark. */ \
2696 if (JvmtiExport::should_post_field_access()) { \
2697 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2698 } \
2699 ret = o->Fieldname##_field(offset); \
2700 return ret; \
2701 JNI_END
2702
2703 DEFINE_GETFIELD(jboolean, bool, Boolean
2704 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2705 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2706 DEFINE_GETFIELD(jbyte, byte, Byte
2707 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2708 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2709 DEFINE_GETFIELD(jchar, char, Char
2710 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2711 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2712 DEFINE_GETFIELD(jshort, short, Short
2713 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2714 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2715 DEFINE_GETFIELD(jint, int, Int
2716 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2717 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2718 DEFINE_GETFIELD(jlong, long, Long
2719 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2720 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2721 // Float and double probes don't return value because dtrace doesn't currently support it
2722 DEFINE_GETFIELD(jfloat, float, Float
2723 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2724 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2725 DEFINE_GETFIELD(jdouble, double, Double
2726 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2727 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2728 #endif /* USDT2 */
2729
2730 address jni_GetBooleanField_addr() {
2731 return (address)jni_GetBooleanField;
2732 }
2733 address jni_GetByteField_addr() {
2734 return (address)jni_GetByteField;
2735 }
2736 address jni_GetCharField_addr() {
2737 return (address)jni_GetCharField;
2738 }
2739 address jni_GetShortField_addr() {
2740 return (address)jni_GetShortField;
2741 }
2742 address jni_GetIntField_addr() {
2743 return (address)jni_GetIntField;
2744 }
2745 address jni_GetLongField_addr() {
2746 return (address)jni_GetLongField;
2747 }
2748 address jni_GetFloatField_addr() {
2749 return (address)jni_GetFloatField;
2750 }
2751 address jni_GetDoubleField_addr() {
2752 return (address)jni_GetDoubleField;
2753 }
2754
2755 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2756 JNIWrapper("SetObjectField");
2757 #ifndef USDT2
2758 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2759 #else /* USDT2 */
2760 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2761 env, obj, (uintptr_t) fieldID, value);
2762 #endif /* USDT2 */
2763 oop o = JNIHandles::resolve_non_null(obj);
2764 Klass* k = o->klass();
2765 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2766 // Keep JVMTI addition small and only check enabled flag here.
2767 // jni_SetField_probe_nh() assumes that is not okay to create handles
2768 // and creates a ResetNoHandleMark.
2769 if (JvmtiExport::should_post_field_modification()) {
2770 jvalue field_value;
2771 field_value.l = value;
2772 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2773 }
2774 o->obj_field_put(offset, JNIHandles::resolve(value));
2775 #ifndef USDT2
2776 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2777 #else /* USDT2 */
2778 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2779 );
2780 #endif /* USDT2 */
2781 JNI_END
2782
2783 #ifndef USDT2
2784 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2785 \
2786 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2787 JNIWrapper("Set" XSTR(Result) "Field"); \
2788 \
2789 FP_SELECT_##Result( \
2790 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2791 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2792 \
2793 oop o = JNIHandles::resolve_non_null(obj); \
2794 Klass* k = o->klass(); \
2795 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2796 /* Keep JVMTI addition small and only check enabled flag here. */ \
2797 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2798 /* and creates a ResetNoHandleMark. */ \
2799 if (JvmtiExport::should_post_field_modification()) { \
2800 jvalue field_value; \
2801 field_value.unionType = value; \
2802 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2803 } \
2804 o->Fieldname##_field_put(offset, value); \
2805 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2806 JNI_END
2807
2808 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2809 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2810 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2811 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2812 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2813 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2814 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2815 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2816
2817 #else /* USDT2 */
2818
2819 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2820 , EntryProbe, ReturnProbe) \
2821 \
2822 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2823 JNIWrapper("Set" XSTR(Result) "Field"); \
2824 \
2825 EntryProbe; \
2826 \
2827 oop o = JNIHandles::resolve_non_null(obj); \
2828 Klass* k = o->klass(); \
2829 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2830 /* Keep JVMTI addition small and only check enabled flag here. */ \
2831 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2832 /* and creates a ResetNoHandleMark. */ \
2833 if (JvmtiExport::should_post_field_modification()) { \
2834 jvalue field_value; \
2835 field_value.unionType = value; \
2836 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2837 } \
2838 o->Fieldname##_field_put(offset, value); \
2839 ReturnProbe; \
2840 JNI_END
2841
2842 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2843 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2844 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2845 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2846 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2847 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2848 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2849 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2850 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2851 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2852 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2853 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2854 DEFINE_SETFIELD(jint, int, Int, 'I', i
2855 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2856 HOTSPOT_JNI_SETINTFIELD_RETURN())
2857 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2858 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2859 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2860 // Float and double probes don't return value because dtrace doesn't currently support it
2861 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2862 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2863 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2864 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2865 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2866 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2867 #endif /* USDT2 */
2868
2869 #ifndef USDT2
2870 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2871 #else /* USDT2 */
2872 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2873 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2874 #endif /* USDT2 */
2875
2876 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2877 JNIWrapper("ToReflectedField");
2878 #ifndef USDT2
2879 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2880 env, cls, fieldID, isStatic);
2881 #else /* USDT2 */
2882 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2883 env, cls, (uintptr_t) fieldID, isStatic);
2884 #endif /* USDT2 */
2885 jobject ret = NULL;
2886 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2887
2888 fieldDescriptor fd;
2889 bool found = false;
2890 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2891
2892 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2893
2894 if (isStatic) {
2895 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2896 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2897 assert(id->is_static_field_id(), "invalid static field id");
2898 found = id->find_local_field(&fd);
2899 } else {
2900 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2901 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2902 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2903 }
2904 assert(found, "bad fieldID passed into jni_ToReflectedField");
2905 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2906 ret = JNIHandles::make_local(env, reflected);
2907 return ret;
2908 JNI_END
2909
2910
2911 //
2912 // Accessing Static Fields
2913 //
2914 #ifndef USDT2
2915 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2916 #else /* USDT2 */
2917 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2918 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2919 #endif /* USDT2 */
2920
2921 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2922 const char *name, const char *sig))
2923 JNIWrapper("GetStaticFieldID");
2924 #ifndef USDT2
2925 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2926 #else /* USDT2 */
2927 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2928 env, clazz, (char *) name, (char *) sig);
2929 #endif /* USDT2 */
2930 jfieldID ret = NULL;
2931 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2932
2933 // The class should have been loaded (we have an instance of the class
2934 // passed in) so the field and signature should already be in the symbol
2935 // table. If they're not there, the field doesn't exist.
2936 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2937 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2938 if (fieldname == NULL || signame == NULL) {
2939 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2940 }
2941 KlassHandle k(THREAD,
2942 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2943 // Make sure class is initialized before handing id's out to static fields
2944 k()->initialize(CHECK_NULL);
2945
2946 fieldDescriptor fd;
2947 if (!k()->oop_is_instance() ||
2948 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2949 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2950 }
2951
2952 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2953 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2954 debug_only(id->set_is_static_field_id();)
2955
2956 debug_only(id->verify(fd.field_holder()));
2957
2958 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2959 return ret;
2960 JNI_END
2961
2962
2963 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2964 JNIWrapper("GetStaticObjectField");
2965 #ifndef USDT2
2966 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
2967 #else /* USDT2 */
2968 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
2969 env, clazz, (uintptr_t) fieldID);
2970 #endif /* USDT2 */
2971 #if INCLUDE_JNI_CHECK
2972 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2973 #endif // INCLUDE_JNI_CHECK
2974 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2975 assert(id->is_static_field_id(), "invalid static field id");
2976 // Keep JVMTI addition small and only check enabled flag here.
2977 // jni_GetField_probe() assumes that is okay to create handles.
2978 if (JvmtiExport::should_post_field_access()) {
2979 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2980 }
2981 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2982 #ifndef USDT2
2983 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
2984 #else /* USDT2 */
2985 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
2986 ret);
2987 #endif /* USDT2 */
2988 return ret;
2989 JNI_END
2990
2991 #ifndef USDT2
2992 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
2993 \
2994 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
2995 \
2996 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
2997 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
2998 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
2999 Return ret = 0;\
3000 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3001 (const Return&)ret);\
3002 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3003 assert(id->is_static_field_id(), "invalid static field id"); \
3004 /* Keep JVMTI addition small and only check enabled flag here. */ \
3005 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3006 if (JvmtiExport::should_post_field_access()) { \
3007 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3008 } \
3009 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3010 return ret;\
3011 JNI_END
3012
3013 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3014 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3015 DEFINE_GETSTATICFIELD(jchar, char, Char)
3016 DEFINE_GETSTATICFIELD(jshort, short, Short)
3017 DEFINE_GETSTATICFIELD(jint, int, Int)
3018 DEFINE_GETSTATICFIELD(jlong, long, Long)
3019 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3020 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3021
3022 #else /* USDT2 */
3023
3024 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3025 , EntryProbe, ReturnProbe) \
3026 \
3027 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3028 , ReturnProbe); \
3029 \
3030 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3031 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3032 EntryProbe; \
3033 Return ret = 0;\
3034 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3035 (const Return&)ret);\
3036 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3037 assert(id->is_static_field_id(), "invalid static field id"); \
3038 /* Keep JVMTI addition small and only check enabled flag here. */ \
3039 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3040 if (JvmtiExport::should_post_field_access()) { \
3041 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3042 } \
3043 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3044 return ret;\
3045 JNI_END
3046
3047 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3048 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3049 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3050 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3051 DEFINE_GETSTATICFIELD(jchar, char, Char
3052 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3053 DEFINE_GETSTATICFIELD(jshort, short, Short
3054 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3055 DEFINE_GETSTATICFIELD(jint, int, Int
3056 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3057 DEFINE_GETSTATICFIELD(jlong, long, Long
3058 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3059 // Float and double probes don't return value because dtrace doesn't currently support it
3060 DEFINE_GETSTATICFIELD(jfloat, float, Float
3061 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3062 DEFINE_GETSTATICFIELD(jdouble, double, Double
3063 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3064 #endif /* USDT2 */
3065
3066 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3067 JNIWrapper("SetStaticObjectField");
3068 #ifndef USDT2
3069 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3070 #else /* USDT2 */
3071 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3072 env, clazz, (uintptr_t) fieldID, value);
3073 #endif /* USDT2 */
3074 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3075 assert(id->is_static_field_id(), "invalid static field id");
3076 // Keep JVMTI addition small and only check enabled flag here.
3077 // jni_SetField_probe() assumes that is okay to create handles.
3078 if (JvmtiExport::should_post_field_modification()) {
3079 jvalue field_value;
3080 field_value.l = value;
3081 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3082 }
3083 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3084 #ifndef USDT2
3085 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3086 #else /* USDT2 */
3087 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3088 );
3089 #endif /* USDT2 */
3090 JNI_END
3091
3092
3093 #ifndef USDT2
3094 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3095 \
3096 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3097 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3098 FP_SELECT_##Result( \
3099 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3100 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3101 \
3102 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3103 assert(id->is_static_field_id(), "invalid static field id"); \
3104 /* Keep JVMTI addition small and only check enabled flag here. */ \
3105 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3106 if (JvmtiExport::should_post_field_modification()) { \
3107 jvalue field_value; \
3108 field_value.unionType = value; \
3109 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3110 } \
3111 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3112 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3113 JNI_END
3114
3115 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3116 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3117 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3118 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3119 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3120 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3121 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3122 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3123
3124 #else /* USDT2 */
3125
3126 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3127 , EntryProbe, ReturnProbe) \
3128 \
3129 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3130 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3131 EntryProbe; \
3132 \
3133 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3134 assert(id->is_static_field_id(), "invalid static field id"); \
3135 /* Keep JVMTI addition small and only check enabled flag here. */ \
3136 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3137 if (JvmtiExport::should_post_field_modification()) { \
3138 jvalue field_value; \
3139 field_value.unionType = value; \
3140 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3141 } \
3142 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3143 ReturnProbe;\
3144 JNI_END
3145
3146 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3147 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3148 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3149 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3150 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3151 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3152 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3153 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3154 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3155 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3156 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3157 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3158 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3159 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3160 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3161 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3162 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3163 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3164 // Float and double probes don't return value because dtrace doesn't currently support it
3165 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3166 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3167 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3168 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3169 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3170 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3171 #endif /* USDT2 */
3172
3173 //
3174 // String Operations
3175 //
3176
3177 // Unicode Interface
3178
3179 #ifndef USDT2
3180 DT_RETURN_MARK_DECL(NewString, jstring);
3181 #else /* USDT2 */
3182 DT_RETURN_MARK_DECL(NewString, jstring
3183 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3184 #endif /* USDT2 */
3185
3186 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3187 JNIWrapper("NewString");
3188 #ifndef USDT2
3189 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3190 #else /* USDT2 */
3191 HOTSPOT_JNI_NEWSTRING_ENTRY(
3192 env, (uint16_t *) unicodeChars, len);
3193 #endif /* USDT2 */
3194 jstring ret = NULL;
3195 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3196 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3197 ret = (jstring) JNIHandles::make_local(env, string);
3198 return ret;
3199 JNI_END
3200
3201
3202 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3203 JNIWrapper("GetStringLength");
3204 #ifndef USDT2
3205 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3206 #else /* USDT2 */
3207 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3208 env, string);
3209 #endif /* USDT2 */
3210 jsize ret = 0;
3211 oop s = JNIHandles::resolve_non_null(string);
3212 if (java_lang_String::value(s) != NULL) {
3213 ret = java_lang_String::length(s);
3214 }
3215 #ifndef USDT2
3216 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3217 #else /* USDT2 */
3218 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3219 ret);
3220 #endif /* USDT2 */
3221 return ret;
3222 JNI_END
3223
3224
3225 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3226 JNIEnv *env, jstring string, jboolean *isCopy))
3227 JNIWrapper("GetStringChars");
3228 #ifndef USDT2
3229 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3230 #else /* USDT2 */
3231 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3232 env, string, (uintptr_t *) isCopy);
3233 #endif /* USDT2 */
3234 jchar* buf = NULL;
3235 oop s = JNIHandles::resolve_non_null(string);
3236 typeArrayOop s_value = java_lang_String::value(s);
3237 if (s_value != NULL) {
3238 int s_len = java_lang_String::length(s);
3239 int s_offset = java_lang_String::offset(s);
3240 buf = NEW_C_HEAP_ARRAY_RETURN_NULL(jchar, s_len + 1, mtInternal); // add one for zero termination
3241 /* JNI Specification states return NULL on OOM */
3242 if (buf != NULL) {
3243 if (s_len > 0) {
3244 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3245 }
3246 buf[s_len] = 0;
3247 //%note jni_5
3248 if (isCopy != NULL) {
3249 *isCopy = JNI_TRUE;
3250 }
3251 }
3252 }
3253 #ifndef USDT2
3254 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3255 #else /* USDT2 */
3256 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3257 buf);
3258 #endif /* USDT2 */
3259 return buf;
3260 JNI_END
3261
3262
3263 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3264 JNIWrapper("ReleaseStringChars");
3265 #ifndef USDT2
3266 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3267 #else /* USDT2 */
3268 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3269 env, str, (uint16_t *) chars);
3270 #endif /* USDT2 */
3271 //%note jni_6
3272 if (chars != NULL) {
3273 // Since String objects are supposed to be immutable, don't copy any
3274 // new data back. A bad user will have to go after the char array.
3275 FreeHeap((void*) chars);
3276 }
3277 #ifndef USDT2
3278 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3279 #else /* USDT2 */
3280 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3281 );
3282 #endif /* USDT2 */
3283 JNI_END
3284
3285
3286 // UTF Interface
3287
3288 #ifndef USDT2
3289 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3290 #else /* USDT2 */
3291 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3292 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3293 #endif /* USDT2 */
3294
3295 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3296 JNIWrapper("NewStringUTF");
3297 #ifndef USDT2
3298 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3299 #else /* USDT2 */
3300 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3301 env, (char *) bytes);
3302 #endif /* USDT2 */
3303 jstring ret;
3304 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3305
3306 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3307 ret = (jstring) JNIHandles::make_local(env, result);
3308 return ret;
3309 JNI_END
3310
3311
3312 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3313 JNIWrapper("GetStringUTFLength");
3314 #ifndef USDT2
3315 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3316 #else /* USDT2 */
3317 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3318 env, string);
3319 #endif /* USDT2 */
3320 jsize ret = 0;
3321 oop java_string = JNIHandles::resolve_non_null(string);
3322 if (java_lang_String::value(java_string) != NULL) {
3323 ret = java_lang_String::utf8_length(java_string);
3324 }
3325 #ifndef USDT2
3326 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3327 #else /* USDT2 */
3328 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3329 ret);
3330 #endif /* USDT2 */
3331 return ret;
3332 JNI_END
3333
3334
3335 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3336 JNIWrapper("GetStringUTFChars");
3337 #ifndef USDT2
3338 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3339 #else /* USDT2 */
3340 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3341 env, string, (uintptr_t *) isCopy);
3342 #endif /* USDT2 */
3343 char* result = NULL;
3344 oop java_string = JNIHandles::resolve_non_null(string);
3345 if (java_lang_String::value(java_string) != NULL) {
3346 size_t length = java_lang_String::utf8_length(java_string);
3347 /* JNI Specification states return NULL on OOM */
3348 result = AllocateHeap(length + 1, mtInternal, 0, AllocFailStrategy::RETURN_NULL);
3349 if (result != NULL) {
3350 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3351 if (isCopy != NULL) {
3352 *isCopy = JNI_TRUE;
3353 }
3354 }
3355 }
3356 #ifndef USDT2
3357 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3358 #else /* USDT2 */
3359 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3360 result);
3361 #endif /* USDT2 */
3362 return result;
3363 JNI_END
3364
3365
3366 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3367 JNIWrapper("ReleaseStringUTFChars");
3368 #ifndef USDT2
3369 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3370 #else /* USDT2 */
3371 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3372 env, str, (char *) chars);
3373 #endif /* USDT2 */
3374 if (chars != NULL) {
3375 FreeHeap((char*) chars);
3376 }
3377 #ifndef USDT2
3378 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3379 #else /* USDT2 */
3380 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3381 );
3382 #endif /* USDT2 */
3383 JNI_END
3384
3385
3386 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3387 JNIWrapper("GetArrayLength");
3388 #ifndef USDT2
3389 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3390 #else /* USDT2 */
3391 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3392 env, array);
3393 #endif /* USDT2 */
3394 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3395 assert(a->is_array(), "must be array");
3396 jsize ret = a->length();
3397 #ifndef USDT2
3398 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3399 #else /* USDT2 */
3400 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3401 ret);
3402 #endif /* USDT2 */
3403 return ret;
3404 JNI_END
3405
3406
3407 //
3408 // Object Array Operations
3409 //
3410
3411 #ifndef USDT2
3412 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3413 #else /* USDT2 */
3414 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3415 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3416 #endif /* USDT2 */
3417
3418 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3419 JNIWrapper("NewObjectArray");
3420 #ifndef USDT2
3421 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3422 #else /* USDT2 */
3423 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3424 env, length, elementClass, initialElement);
3425 #endif /* USDT2 */
3426 jobjectArray ret = NULL;
3427 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3428 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3429 Klass* ako = ek()->array_klass(CHECK_NULL);
3430 KlassHandle ak = KlassHandle(THREAD, ako);
3431 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3432 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3433 oop initial_value = JNIHandles::resolve(initialElement);
3434 if (initial_value != NULL) { // array already initialized with NULL
3435 for (int index = 0; index < length; index++) {
3436 result->obj_at_put(index, initial_value);
3437 }
3438 }
3439 ret = (jobjectArray) JNIHandles::make_local(env, result);
3440 return ret;
3441 JNI_END
3442
3443 #ifndef USDT2
3444 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3445 #else /* USDT2 */
3446 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3447 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3448 #endif /* USDT2 */
3449
3450 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3451 JNIWrapper("GetObjectArrayElement");
3452 #ifndef USDT2
3453 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3454 #else /* USDT2 */
3455 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3456 env, array, index);
3457 #endif /* USDT2 */
3458 jobject ret = NULL;
3459 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3460 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3461 if (a->is_within_bounds(index)) {
3462 ret = JNIHandles::make_local(env, a->obj_at(index));
3463 return ret;
3464 } else {
3465 char buf[jintAsStringSize];
3466 sprintf(buf, "%d", index);
3467 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3468 }
3469 JNI_END
3470
3471 #ifndef USDT2
3472 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3473 #else /* USDT2 */
3474 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3475 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3476 #endif /* USDT2 */
3477
3478 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3479 JNIWrapper("SetObjectArrayElement");
3480 #ifndef USDT2
3481 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3482 #else /* USDT2 */
3483 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3484 env, array, index, value);
3485 #endif /* USDT2 */
3486 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3487
3488 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3489 oop v = JNIHandles::resolve(value);
3490 if (a->is_within_bounds(index)) {
3491 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3492 a->obj_at_put(index, v);
3493 } else {
3494 THROW(vmSymbols::java_lang_ArrayStoreException());
3495 }
3496 } else {
3497 char buf[jintAsStringSize];
3498 sprintf(buf, "%d", index);
3499 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3500 }
3501 JNI_END
3502
3503
3504 #ifndef USDT2
3505 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3506 \
3507 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3508 \
3509 JNI_ENTRY(Return, \
3510 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3511 JNIWrapper("New" XSTR(Result) "Array"); \
3512 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3513 Return ret = NULL;\
3514 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3515 \
3516 oop obj= oopFactory::Allocator(len, CHECK_0); \
3517 ret = (Return) JNIHandles::make_local(env, obj); \
3518 return ret;\
3519 JNI_END
3520
3521 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3522 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3523 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3524 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3525 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3526 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3527 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3528 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3529
3530 #else /* USDT2 */
3531
3532 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3533 ,EntryProbe,ReturnProbe) \
3534 \
3535 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3536 , ReturnProbe); \
3537 \
3538 JNI_ENTRY(Return, \
3539 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3540 JNIWrapper("New" XSTR(Result) "Array"); \
3541 EntryProbe; \
3542 Return ret = NULL;\
3543 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3544 \
3545 oop obj= oopFactory::Allocator(len, CHECK_0); \
3546 ret = (Return) JNIHandles::make_local(env, obj); \
3547 return ret;\
3548 JNI_END
3549
3550 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3551 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3552 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3553 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3554 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3555 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3556 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3557 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3558 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3559 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3560 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3561 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3562 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3563 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3564 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3565 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3566 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3567 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3568 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3569 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3570 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3571 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3572 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3573 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3574 #endif /* USDT2 */
3575
3576 // Return an address which will fault if the caller writes to it.
3577
3578 static char* get_bad_address() {
3579 static char* bad_address = NULL;
3580 if (bad_address == NULL) {
3581 size_t size = os::vm_allocation_granularity();
3582 bad_address = os::reserve_memory(size);
3583 if (bad_address != NULL) {
3584 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3585 /*is_committed*/false);
3586 MemTracker::record_virtual_memory_type((void*)bad_address, mtInternal);
3587 }
3588 }
3589 return bad_address;
3590 }
3591
3592
3593 #ifndef USDT2
3594 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3595 \
3596 JNI_QUICK_ENTRY(ElementType*, \
3597 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3598 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3599 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3600 /* allocate an chunk of memory in c land */ \
3601 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3602 ElementType* result; \
3603 int len = a->length(); \
3604 if (len == 0) { \
3605 /* Empty array: legal but useless, can't return NULL. \
3606 * Return a pointer to something useless. \
3607 * Avoid asserts in typeArrayOop. */ \
3608 result = (ElementType*)get_bad_address(); \
3609 } else { \
3610 /* JNI Specification states return NULL on OOM */ \
3611 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3612 if (result != NULL) { \
3613 /* copy the array to the c chunk */ \
3614 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3615 if (isCopy) { \
3616 *isCopy = JNI_TRUE; \
3617 } \
3618 } \
3619 } \
3620 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3621 return result; \
3622 JNI_END
3623
3624 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3625 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3626 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3627 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3628 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3629 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3630 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3631 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3632
3633 #else /* USDT2 */
3634
3635 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3636 , EntryProbe, ReturnProbe) \
3637 \
3638 JNI_QUICK_ENTRY(ElementType*, \
3639 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3640 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3641 EntryProbe; \
3642 /* allocate an chunk of memory in c land */ \
3643 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3644 ElementType* result; \
3645 int len = a->length(); \
3646 if (len == 0) { \
3647 /* Empty array: legal but useless, can't return NULL. \
3648 * Return a pointer to something useless. \
3649 * Avoid asserts in typeArrayOop. */ \
3650 result = (ElementType*)get_bad_address(); \
3651 } else { \
3652 /* JNI Specification states return NULL on OOM */ \
3653 result = NEW_C_HEAP_ARRAY_RETURN_NULL(ElementType, len, mtInternal); \
3654 if (result != NULL) { \
3655 /* copy the array to the c chunk */ \
3656 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3657 if (isCopy) { \
3658 *isCopy = JNI_TRUE; \
3659 } \
3660 } \
3661 } \
3662 ReturnProbe; \
3663 return result; \
3664 JNI_END
3665
3666 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3667 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3668 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3669 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3670 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3671 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3672 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3673 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3674 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3675 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3676 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3677 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3678 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3679 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3680 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3681 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3682 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3683 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3684 // Float and double probes don't return value because dtrace doesn't currently support it
3685 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3686 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3687 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3688 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3689 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3690 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3691 #endif /* USDT2 */
3692
3693 #ifndef USDT2
3694 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3695 \
3696 JNI_QUICK_ENTRY(void, \
3697 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3698 ElementType *buf, jint mode)) \
3699 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3700 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3701 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3702 int len = a->length(); \
3703 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3704 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3705 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3706 } \
3707 if ((mode == 0) || (mode == JNI_ABORT)) { \
3708 FreeHeap(buf); \
3709 } \
3710 } \
3711 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3712 JNI_END
3713
3714 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3715 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3716 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3717 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3718 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3719 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3720 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3721 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3722
3723 #else /* USDT2 */
3724
3725 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3726 , EntryProbe, ReturnProbe);\
3727 \
3728 JNI_QUICK_ENTRY(void, \
3729 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3730 ElementType *buf, jint mode)) \
3731 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3732 EntryProbe; \
3733 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3734 int len = a->length(); \
3735 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3736 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3737 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3738 } \
3739 if ((mode == 0) || (mode == JNI_ABORT)) { \
3740 FreeHeap(buf); \
3741 } \
3742 } \
3743 ReturnProbe; \
3744 JNI_END
3745
3746 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3747 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3748 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3749 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3750 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3751 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3752 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3753 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3754 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3755 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3756 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3757 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3758 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3759 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3760 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3761 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3762 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3763 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3764 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3765 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3766 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3767 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3768 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3769 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3770 #endif /* USDT2 */
3771
3772 #ifndef USDT2
3773 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3774 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3775 \
3776 JNI_ENTRY(void, \
3777 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3778 jsize len, ElementType *buf)) \
3779 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3780 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3781 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3782 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3783 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3784 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3785 } else { \
3786 if (len > 0) { \
3787 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3788 memcpy((u_char*) buf, \
3789 (u_char*) src->Tag##_at_addr(start), \
3790 len << sc); \
3791 } \
3792 } \
3793 JNI_END
3794
3795 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3796 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3797 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3798 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3799 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3800 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3801 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3802 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3803
3804 #else /* USDT2 */
3805
3806 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3807 , EntryProbe, ReturnProbe); \
3808 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3809 , ReturnProbe); \
3810 \
3811 JNI_ENTRY(void, \
3812 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3813 jsize len, ElementType *buf)) \
3814 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3815 EntryProbe; \
3816 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3817 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3818 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3819 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3820 } else { \
3821 if (len > 0) { \
3822 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3823 memcpy((u_char*) buf, \
3824 (u_char*) src->Tag##_at_addr(start), \
3825 len << sc); \
3826 } \
3827 } \
3828 JNI_END
3829
3830 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3831 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3832 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3833 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3834 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3835 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3836 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3837 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3838 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3839 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3840 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3841 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3842 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3843 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3844 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3845 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3846 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3847 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3848 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3849 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3850 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3851 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3852 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3853 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3854 #endif /* USDT2 */
3855
3856 #ifndef USDT2
3857 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3858 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3859 \
3860 JNI_ENTRY(void, \
3861 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3862 jsize len, const ElementType *buf)) \
3863 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3864 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3865 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3866 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3867 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3868 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3869 } else { \
3870 if (len > 0) { \
3871 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3872 memcpy((u_char*) dst->Tag##_at_addr(start), \
3873 (u_char*) buf, \
3874 len << sc); \
3875 } \
3876 } \
3877 JNI_END
3878
3879 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3880 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3881 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3882 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3883 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3884 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3885 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3886 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3887
3888 #else /* USDT2 */
3889
3890 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3891 , EntryProbe, ReturnProbe); \
3892 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3893 ,ReturnProbe); \
3894 \
3895 JNI_ENTRY(void, \
3896 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3897 jsize len, const ElementType *buf)) \
3898 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3899 EntryProbe; \
3900 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3901 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3902 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3903 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3904 } else { \
3905 if (len > 0) { \
3906 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3907 memcpy((u_char*) dst->Tag##_at_addr(start), \
3908 (u_char*) buf, \
3909 len << sc); \
3910 } \
3911 } \
3912 JNI_END
3913
3914 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3915 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3916 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3917 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3918 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3919 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3920 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3921 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3922 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3923 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3924 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3925 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3926 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3927 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3928 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3929 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3930 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3931 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3932 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3933 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3934 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3935 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3936 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3937 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3938 #endif /* USDT2 */
3939
3940
3941 //
3942 // Interception of natives
3943 //
3944
3945 // The RegisterNatives call being attempted tried to register with a method that
3946 // is not native. Ask JVM TI what prefixes have been specified. Then check
3947 // to see if the native method is now wrapped with the prefixes. See the
3948 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3949 static Method* find_prefixed_native(KlassHandle k,
3950 Symbol* name, Symbol* signature, TRAPS) {
3951 #if INCLUDE_JVMTI
3952 ResourceMark rm(THREAD);
3953 Method* method;
3954 int name_len = name->utf8_length();
3955 char* name_str = name->as_utf8();
3956 int prefix_count;
3957 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3958 for (int i = 0; i < prefix_count; i++) {
3959 char* prefix = prefixes[i];
3960 int prefix_len = (int)strlen(prefix);
3961
3962 // try adding this prefix to the method name and see if it matches another method name
3963 int trial_len = name_len + prefix_len;
3964 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3965 strcpy(trial_name_str, prefix);
3966 strcat(trial_name_str, name_str);
3967 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3968 if (trial_name == NULL) {
3969 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3970 }
3971 method = k()->lookup_method(trial_name, signature);
3972 if (method == NULL) {
3973 continue; // signature doesn't match, try the next prefix
3974 }
3975 if (method->is_native()) {
3976 method->set_is_prefixed_native();
3977 return method; // wahoo, we found a prefixed version of the method, return it
3978 }
3979 // found as non-native, so prefix is good, add it, probably just need more prefixes
3980 name_len = trial_len;
3981 name_str = trial_name_str;
3982 }
3983 #endif // INCLUDE_JVMTI
3984 return NULL; // not found
3985 }
3986
3987 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3988 Method* method = k()->lookup_method(name, signature);
3989 if (method == NULL) {
3990 ResourceMark rm;
3991 stringStream st;
3992 st.print("Method %s name or signature does not match",
3993 Method::name_and_sig_as_C_string(k(), name, signature));
3994 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3995 }
3996 if (!method->is_native()) {
3997 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3998 method = find_prefixed_native(k, name, signature, THREAD);
3999 if (method == NULL) {
4000 ResourceMark rm;
4001 stringStream st;
4002 st.print("Method %s is not declared as native",
4003 Method::name_and_sig_as_C_string(k(), name, signature));
4004 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
4005 }
4006 }
4007
4008 if (entry != NULL) {
4009 method->set_native_function(entry,
4010 Method::native_bind_event_is_interesting);
4011 } else {
4012 method->clear_native_function();
4013 }
4014 if (PrintJNIResolving) {
4015 ResourceMark rm(THREAD);
4016 tty->print_cr("[Registering JNI native method %s.%s]",
4017 method->method_holder()->external_name(),
4018 method->name()->as_C_string());
4019 }
4020 return true;
4021 }
4022
4023 #ifndef USDT2
4024 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4025 #else /* USDT2 */
4026 DT_RETURN_MARK_DECL(RegisterNatives, jint
4027 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4028 #endif /* USDT2 */
4029
4030 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4031 const JNINativeMethod *methods,
4032 jint nMethods))
4033 JNIWrapper("RegisterNatives");
4034 #ifndef USDT2
4035 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4036 #else /* USDT2 */
4037 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4038 env, clazz, (void *) methods, nMethods);
4039 #endif /* USDT2 */
4040 jint ret = 0;
4041 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4042
4043 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4044
4045 for (int index = 0; index < nMethods; index++) {
4046 const char* meth_name = methods[index].name;
4047 const char* meth_sig = methods[index].signature;
4048 int meth_name_len = (int)strlen(meth_name);
4049
4050 // The class should have been loaded (we have an instance of the class
4051 // passed in) so the method and signature should already be in the symbol
4052 // table. If they're not there, the method doesn't exist.
4053 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4054 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4055
4056 if (name == NULL || signature == NULL) {
4057 ResourceMark rm;
4058 stringStream st;
4059 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
4060 // Must return negative value on failure
4061 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4062 }
4063
4064 bool res = register_native(h_k, name, signature,
4065 (address) methods[index].fnPtr, THREAD);
4066 if (!res) {
4067 ret = -1;
4068 break;
4069 }
4070 }
4071 return ret;
4072 JNI_END
4073
4074
4075 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4076 JNIWrapper("UnregisterNatives");
4077 #ifndef USDT2
4078 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4079 #else /* USDT2 */
4080 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4081 env, clazz);
4082 #endif /* USDT2 */
4083 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4084 //%note jni_2
4085 if (k->oop_is_instance()) {
4086 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4087 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4088 if (m->is_native()) {
4089 m->clear_native_function();
4090 m->set_signature_handler(NULL);
4091 }
4092 }
4093 }
4094 #ifndef USDT2
4095 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4096 #else /* USDT2 */
4097 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4098 0);
4099 #endif /* USDT2 */
4100 return 0;
4101 JNI_END
4102
4103 //
4104 // Monitor functions
4105 //
4106
4107 #ifndef USDT2
4108 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4109 #else /* USDT2 */
4110 DT_RETURN_MARK_DECL(MonitorEnter, jint
4111 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4112 #endif /* USDT2 */
4113
4114 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4115 #ifndef USDT2
4116 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4117 #else /* USDT2 */
4118 HOTSPOT_JNI_MONITORENTER_ENTRY(
4119 env, jobj);
4120 #endif /* USDT2 */
4121 jint ret = JNI_ERR;
4122 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4123
4124 // If the object is null, we can't do anything with it
4125 if (jobj == NULL) {
4126 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4127 }
4128
4129 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4130 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4131 ret = JNI_OK;
4132 return ret;
4133 JNI_END
4134
4135 #ifndef USDT2
4136 DT_RETURN_MARK_DECL(MonitorExit, jint);
4137 #else /* USDT2 */
4138 DT_RETURN_MARK_DECL(MonitorExit, jint
4139 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4140 #endif /* USDT2 */
4141
4142 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4143 #ifndef USDT2
4144 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4145 #else /* USDT2 */
4146 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4147 env, jobj);
4148 #endif /* USDT2 */
4149 jint ret = JNI_ERR;
4150 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4151
4152 // Don't do anything with a null object
4153 if (jobj == NULL) {
4154 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4155 }
4156
4157 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4158 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4159
4160 ret = JNI_OK;
4161 return ret;
4162 JNI_END
4163
4164 //
4165 // Extensions
4166 //
4167
4168 #ifndef USDT2
4169 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4170 #else /* USDT2 */
4171 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4172 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4173 #endif /* USDT2 */
4174
4175 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4176 JNIWrapper("GetStringRegion");
4177 #ifndef USDT2
4178 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4179 #else /* USDT2 */
4180 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4181 env, string, start, len, buf);
4182 #endif /* USDT2 */
4183 DT_VOID_RETURN_MARK(GetStringRegion);
4184 oop s = JNIHandles::resolve_non_null(string);
4185 int s_len = java_lang_String::length(s);
4186 if (start < 0 || len < 0 || start + len > s_len) {
4187 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4188 } else {
4189 if (len > 0) {
4190 int s_offset = java_lang_String::offset(s);
4191 typeArrayOop s_value = java_lang_String::value(s);
4192 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4193 }
4194 }
4195 JNI_END
4196
4197 #ifndef USDT2
4198 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4199 #else /* USDT2 */
4200 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4201 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4202 #endif /* USDT2 */
4203
4204 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4205 JNIWrapper("GetStringUTFRegion");
4206 #ifndef USDT2
4207 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4208 #else /* USDT2 */
4209 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4210 env, string, start, len, buf);
4211 #endif /* USDT2 */
4212 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4213 oop s = JNIHandles::resolve_non_null(string);
4214 int s_len = java_lang_String::length(s);
4215 if (start < 0 || len < 0 || start + len > s_len) {
4216 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4217 } else {
4218 //%note jni_7
4219 if (len > 0) {
4220 ResourceMark rm(THREAD);
4221 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4222 int utf_len = (int)strlen(utf_region);
4223 memcpy(buf, utf_region, utf_len);
4224 buf[utf_len] = 0;
4225 } else {
4226 // JDK null-terminates the buffer even in len is zero
4227 if (buf != NULL) {
4228 buf[0] = 0;
4229 }
4230 }
4231 }
4232 JNI_END
4233
4234
4235 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4236 JNIWrapper("GetPrimitiveArrayCritical");
4237 #ifndef USDT2
4238 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4239 #else /* USDT2 */
4240 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4241 env, array, (uintptr_t *) isCopy);
4242 #endif /* USDT2 */
4243 GC_locker::lock_critical(thread);
4244 if (isCopy != NULL) {
4245 *isCopy = JNI_FALSE;
4246 }
4247 oop a = JNIHandles::resolve_non_null(array);
4248 assert(a->is_array(), "just checking");
4249 BasicType type;
4250 if (a->is_objArray()) {
4251 type = T_OBJECT;
4252 } else {
4253 type = TypeArrayKlass::cast(a->klass())->element_type();
4254 }
4255 void* ret = arrayOop(a)->base(type);
4256 #ifndef USDT2
4257 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4258 #else /* USDT2 */
4259 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4260 ret);
4261 #endif /* USDT2 */
4262 return ret;
4263 JNI_END
4264
4265
4266 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4267 JNIWrapper("ReleasePrimitiveArrayCritical");
4268 #ifndef USDT2
4269 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4270 #else /* USDT2 */
4271 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4272 env, array, carray, mode);
4273 #endif /* USDT2 */
4274 // The array, carray and mode arguments are ignored
4275 GC_locker::unlock_critical(thread);
4276 #ifndef USDT2
4277 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4278 #else /* USDT2 */
4279 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4280 );
4281 #endif /* USDT2 */
4282 JNI_END
4283
4284
4285 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4286 JNIWrapper("GetStringCritical");
4287 #ifndef USDT2
4288 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4289 #else /* USDT2 */
4290 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4291 env, string, (uintptr_t *) isCopy);
4292 #endif /* USDT2 */
4293 GC_locker::lock_critical(thread);
4294 if (isCopy != NULL) {
4295 *isCopy = JNI_FALSE;
4296 }
4297 oop s = JNIHandles::resolve_non_null(string);
4298 int s_len = java_lang_String::length(s);
4299 typeArrayOop s_value = java_lang_String::value(s);
4300 int s_offset = java_lang_String::offset(s);
4301 const jchar* ret;
4302 if (s_len > 0) {
4303 ret = s_value->char_at_addr(s_offset);
4304 } else {
4305 ret = (jchar*) s_value->base(T_CHAR);
4306 }
4307 #ifndef USDT2
4308 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4309 #else /* USDT2 */
4310 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4311 (uint16_t *) ret);
4312 #endif /* USDT2 */
4313 return ret;
4314 JNI_END
4315
4316
4317 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4318 JNIWrapper("ReleaseStringCritical");
4319 #ifndef USDT2
4320 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4321 #else /* USDT2 */
4322 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4323 env, str, (uint16_t *) chars);
4324 #endif /* USDT2 */
4325 // The str and chars arguments are ignored
4326 GC_locker::unlock_critical(thread);
4327 #ifndef USDT2
4328 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4329 #else /* USDT2 */
4330 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4331 );
4332 #endif /* USDT2 */
4333 JNI_END
4334
4335
4336 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4337 JNIWrapper("jni_NewWeakGlobalRef");
4338 #ifndef USDT2
4339 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4340 #else /* USDT2 */
4341 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4342 env, ref);
4343 #endif /* USDT2 */
4344 Handle ref_handle(thread, JNIHandles::resolve(ref));
4345 jweak ret = JNIHandles::make_weak_global(ref_handle);
4346 #ifndef USDT2
4347 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4348 #else /* USDT2 */
4349 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4350 ret);
4351 #endif /* USDT2 */
4352 return ret;
4353 JNI_END
4354
4355 // Must be JNI_ENTRY (with HandleMark)
4356 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4357 JNIWrapper("jni_DeleteWeakGlobalRef");
4358 #ifndef USDT2
4359 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4360 #else /* USDT2 */
4361 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4362 env, ref);
4363 #endif /* USDT2 */
4364 JNIHandles::destroy_weak_global(ref);
4365 #ifndef USDT2
4366 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4367 #else /* USDT2 */
4368 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4369 );
4370 #endif /* USDT2 */
4371 JNI_END
4372
4373
4374 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4375 JNIWrapper("jni_ExceptionCheck");
4376 #ifndef USDT2
4377 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4378 #else /* USDT2 */
4379 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4380 env);
4381 #endif /* USDT2 */
4382 jni_check_async_exceptions(thread);
4383 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4384 #ifndef USDT2
4385 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4386 #else /* USDT2 */
4387 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4388 ret);
4389 #endif /* USDT2 */
4390 return ret;
4391 JNI_END
4392
4393
4394 // Initialization state for three routines below relating to
4395 // java.nio.DirectBuffers
4396 static jint directBufferSupportInitializeStarted = 0;
4397 static volatile jint directBufferSupportInitializeEnded = 0;
4398 static volatile jint directBufferSupportInitializeFailed = 0;
4399 static jclass bufferClass = NULL;
4400 static jclass directBufferClass = NULL;
4401 static jclass directByteBufferClass = NULL;
4402 static jmethodID directByteBufferConstructor = NULL;
4403 static jfieldID directBufferAddressField = NULL;
4404 static jfieldID bufferCapacityField = NULL;
4405
4406 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4407 Handle loader; // null (bootstrap) loader
4408 Handle protection_domain; // null protection domain
4409
4410 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4411 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4412
4413 if (TraceClassResolution && result != NULL) {
4414 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4415 }
4416 return result;
4417 }
4418
4419 // These lookups are done with the NULL (bootstrap) ClassLoader to
4420 // circumvent any security checks that would be done by jni_FindClass.
4421 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4422 {
4423 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4424 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4425 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4426 return true;
4427 }
4428 JNI_END
4429
4430
4431 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4432 if (directBufferSupportInitializeFailed) {
4433 return false;
4434 }
4435
4436 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4437 if (!lookupDirectBufferClasses(env)) {
4438 directBufferSupportInitializeFailed = 1;
4439 return false;
4440 }
4441
4442 // Make global references for these
4443 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4444 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4445 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4446
4447 // Get needed field and method IDs
4448 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4449 if (env->ExceptionCheck()) {
4450 env->ExceptionClear();
4451 directBufferSupportInitializeFailed = 1;
4452 return false;
4453 }
4454 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4455 if (env->ExceptionCheck()) {
4456 env->ExceptionClear();
4457 directBufferSupportInitializeFailed = 1;
4458 return false;
4459 }
4460 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4461 if (env->ExceptionCheck()) {
4462 env->ExceptionClear();
4463 directBufferSupportInitializeFailed = 1;
4464 return false;
4465 }
4466
4467 if ((directByteBufferConstructor == NULL) ||
4468 (directBufferAddressField == NULL) ||
4469 (bufferCapacityField == NULL)) {
4470 directBufferSupportInitializeFailed = 1;
4471 return false;
4472 }
4473
4474 directBufferSupportInitializeEnded = 1;
4475 } else {
4476 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4477 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4478 // os::sleep which requires the VM state transition. On other platforms, it
4479 // is not necessary. The following call to change the VM state is purposely
4480 // put inside the loop to avoid potential deadlock when multiple threads
4481 // try to call this method. See 6791815 for more details.
4482 ThreadInVMfromNative tivn(thread);
4483 os::yield_all();
4484 }
4485 }
4486
4487 return !directBufferSupportInitializeFailed;
4488 }
4489
4490 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4491 {
4492 // thread_from_jni_environment() will block if VM is gone.
4493 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4494
4495 JNIWrapper("jni_NewDirectByteBuffer");
4496 #ifndef USDT2
4497 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4498 #else /* USDT2 */
4499 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4500 env, address, capacity);
4501 #endif /* USDT2 */
4502
4503 if (!directBufferSupportInitializeEnded) {
4504 if (!initializeDirectBufferSupport(env, thread)) {
4505 #ifndef USDT2
4506 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4507 #else /* USDT2 */
4508 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4509 NULL);
4510 #endif /* USDT2 */
4511 return NULL;
4512 }
4513 }
4514
4515 // Being paranoid about accidental sign extension on address
4516 jlong addr = (jlong) ((uintptr_t) address);
4517 // NOTE that package-private DirectByteBuffer constructor currently
4518 // takes int capacity
4519 jint cap = (jint) capacity;
4520 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4521 #ifndef USDT2
4522 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4523 #else /* USDT2 */
4524 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4525 ret);
4526 #endif /* USDT2 */
4527 return ret;
4528 }
4529
4530 #ifndef USDT2
4531 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4532 #else /* USDT2 */
4533 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4534 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4535 #endif /* USDT2 */
4536
4537 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4538 {
4539 // thread_from_jni_environment() will block if VM is gone.
4540 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4541
4542 JNIWrapper("jni_GetDirectBufferAddress");
4543 #ifndef USDT2
4544 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4545 #else /* USDT2 */
4546 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4547 env, buf);
4548 #endif /* USDT2 */
4549 void* ret = NULL;
4550 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4551
4552 if (!directBufferSupportInitializeEnded) {
4553 if (!initializeDirectBufferSupport(env, thread)) {
4554 return 0;
4555 }
4556 }
4557
4558 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4559 return 0;
4560 }
4561
4562 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4563 return ret;
4564 }
4565
4566 #ifndef USDT2
4567 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4568 #else /* USDT2 */
4569 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4570 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4571 #endif /* USDT2 */
4572
4573 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4574 {
4575 // thread_from_jni_environment() will block if VM is gone.
4576 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4577
4578 JNIWrapper("jni_GetDirectBufferCapacity");
4579 #ifndef USDT2
4580 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4581 #else /* USDT2 */
4582 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4583 env, buf);
4584 #endif /* USDT2 */
4585 jlong ret = -1;
4586 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4587
4588 if (!directBufferSupportInitializeEnded) {
4589 if (!initializeDirectBufferSupport(env, thread)) {
4590 ret = 0;
4591 return ret;
4592 }
4593 }
4594
4595 if (buf == NULL) {
4596 return -1;
4597 }
4598
4599 if (!env->IsInstanceOf(buf, directBufferClass)) {
4600 return -1;
4601 }
4602
4603 // NOTE that capacity is currently an int in the implementation
4604 ret = env->GetIntField(buf, bufferCapacityField);
4605 return ret;
4606 }
4607
4608
4609 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4610 JNIWrapper("GetVersion");
4611 #ifndef USDT2
4612 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4613 #else /* USDT2 */
4614 HOTSPOT_JNI_GETVERSION_ENTRY(
4615 env);
4616 #endif /* USDT2 */
4617 #ifndef USDT2
4618 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4619 #else /* USDT2 */
4620 HOTSPOT_JNI_GETVERSION_RETURN(
4621 CurrentVersion);
4622 #endif /* USDT2 */
4623 return CurrentVersion;
4624 JNI_END
4625
4626 extern struct JavaVM_ main_vm;
4627
4628 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4629 JNIWrapper("jni_GetJavaVM");
4630 #ifndef USDT2
4631 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4632 #else /* USDT2 */
4633 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4634 env, (void **) vm);
4635 #endif /* USDT2 */
4636 *vm = (JavaVM *)(&main_vm);
4637 #ifndef USDT2
4638 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4639 #else /* USDT2 */
4640 HOTSPOT_JNI_GETJAVAVM_RETURN(
4641 JNI_OK);
4642 #endif /* USDT2 */
4643 return JNI_OK;
4644 JNI_END
4645
4646 // Structure containing all jni functions
4647 struct JNINativeInterface_ jni_NativeInterface = {
4648 NULL,
4649 NULL,
4650 NULL,
4651
4652 NULL,
4653
4654 jni_GetVersion,
4655
4656 jni_DefineClass,
4657 jni_FindClass,
4658
4659 jni_FromReflectedMethod,
4660 jni_FromReflectedField,
4661
4662 jni_ToReflectedMethod,
4663
4664 jni_GetSuperclass,
4665 jni_IsAssignableFrom,
4666
4667 jni_ToReflectedField,
4668
4669 jni_Throw,
4670 jni_ThrowNew,
4671 jni_ExceptionOccurred,
4672 jni_ExceptionDescribe,
4673 jni_ExceptionClear,
4674 jni_FatalError,
4675
4676 jni_PushLocalFrame,
4677 jni_PopLocalFrame,
4678
4679 jni_NewGlobalRef,
4680 jni_DeleteGlobalRef,
4681 jni_DeleteLocalRef,
4682 jni_IsSameObject,
4683
4684 jni_NewLocalRef,
4685 jni_EnsureLocalCapacity,
4686
4687 jni_AllocObject,
4688 jni_NewObject,
4689 jni_NewObjectV,
4690 jni_NewObjectA,
4691
4692 jni_GetObjectClass,
4693 jni_IsInstanceOf,
4694
4695 jni_GetMethodID,
4696
4697 jni_CallObjectMethod,
4698 jni_CallObjectMethodV,
4699 jni_CallObjectMethodA,
4700 jni_CallBooleanMethod,
4701 jni_CallBooleanMethodV,
4702 jni_CallBooleanMethodA,
4703 jni_CallByteMethod,
4704 jni_CallByteMethodV,
4705 jni_CallByteMethodA,
4706 jni_CallCharMethod,
4707 jni_CallCharMethodV,
4708 jni_CallCharMethodA,
4709 jni_CallShortMethod,
4710 jni_CallShortMethodV,
4711 jni_CallShortMethodA,
4712 jni_CallIntMethod,
4713 jni_CallIntMethodV,
4714 jni_CallIntMethodA,
4715 jni_CallLongMethod,
4716 jni_CallLongMethodV,
4717 jni_CallLongMethodA,
4718 jni_CallFloatMethod,
4719 jni_CallFloatMethodV,
4720 jni_CallFloatMethodA,
4721 jni_CallDoubleMethod,
4722 jni_CallDoubleMethodV,
4723 jni_CallDoubleMethodA,
4724 jni_CallVoidMethod,
4725 jni_CallVoidMethodV,
4726 jni_CallVoidMethodA,
4727
4728 jni_CallNonvirtualObjectMethod,
4729 jni_CallNonvirtualObjectMethodV,
4730 jni_CallNonvirtualObjectMethodA,
4731 jni_CallNonvirtualBooleanMethod,
4732 jni_CallNonvirtualBooleanMethodV,
4733 jni_CallNonvirtualBooleanMethodA,
4734 jni_CallNonvirtualByteMethod,
4735 jni_CallNonvirtualByteMethodV,
4736 jni_CallNonvirtualByteMethodA,
4737 jni_CallNonvirtualCharMethod,
4738 jni_CallNonvirtualCharMethodV,
4739 jni_CallNonvirtualCharMethodA,
4740 jni_CallNonvirtualShortMethod,
4741 jni_CallNonvirtualShortMethodV,
4742 jni_CallNonvirtualShortMethodA,
4743 jni_CallNonvirtualIntMethod,
4744 jni_CallNonvirtualIntMethodV,
4745 jni_CallNonvirtualIntMethodA,
4746 jni_CallNonvirtualLongMethod,
4747 jni_CallNonvirtualLongMethodV,
4748 jni_CallNonvirtualLongMethodA,
4749 jni_CallNonvirtualFloatMethod,
4750 jni_CallNonvirtualFloatMethodV,
4751 jni_CallNonvirtualFloatMethodA,
4752 jni_CallNonvirtualDoubleMethod,
4753 jni_CallNonvirtualDoubleMethodV,
4754 jni_CallNonvirtualDoubleMethodA,
4755 jni_CallNonvirtualVoidMethod,
4756 jni_CallNonvirtualVoidMethodV,
4757 jni_CallNonvirtualVoidMethodA,
4758
4759 jni_GetFieldID,
4760
4761 jni_GetObjectField,
4762 jni_GetBooleanField,
4763 jni_GetByteField,
4764 jni_GetCharField,
4765 jni_GetShortField,
4766 jni_GetIntField,
4767 jni_GetLongField,
4768 jni_GetFloatField,
4769 jni_GetDoubleField,
4770
4771 jni_SetObjectField,
4772 jni_SetBooleanField,
4773 jni_SetByteField,
4774 jni_SetCharField,
4775 jni_SetShortField,
4776 jni_SetIntField,
4777 jni_SetLongField,
4778 jni_SetFloatField,
4779 jni_SetDoubleField,
4780
4781 jni_GetStaticMethodID,
4782
4783 jni_CallStaticObjectMethod,
4784 jni_CallStaticObjectMethodV,
4785 jni_CallStaticObjectMethodA,
4786 jni_CallStaticBooleanMethod,
4787 jni_CallStaticBooleanMethodV,
4788 jni_CallStaticBooleanMethodA,
4789 jni_CallStaticByteMethod,
4790 jni_CallStaticByteMethodV,
4791 jni_CallStaticByteMethodA,
4792 jni_CallStaticCharMethod,
4793 jni_CallStaticCharMethodV,
4794 jni_CallStaticCharMethodA,
4795 jni_CallStaticShortMethod,
4796 jni_CallStaticShortMethodV,
4797 jni_CallStaticShortMethodA,
4798 jni_CallStaticIntMethod,
4799 jni_CallStaticIntMethodV,
4800 jni_CallStaticIntMethodA,
4801 jni_CallStaticLongMethod,
4802 jni_CallStaticLongMethodV,
4803 jni_CallStaticLongMethodA,
4804 jni_CallStaticFloatMethod,
4805 jni_CallStaticFloatMethodV,
4806 jni_CallStaticFloatMethodA,
4807 jni_CallStaticDoubleMethod,
4808 jni_CallStaticDoubleMethodV,
4809 jni_CallStaticDoubleMethodA,
4810 jni_CallStaticVoidMethod,
4811 jni_CallStaticVoidMethodV,
4812 jni_CallStaticVoidMethodA,
4813
4814 jni_GetStaticFieldID,
4815
4816 jni_GetStaticObjectField,
4817 jni_GetStaticBooleanField,
4818 jni_GetStaticByteField,
4819 jni_GetStaticCharField,
4820 jni_GetStaticShortField,
4821 jni_GetStaticIntField,
4822 jni_GetStaticLongField,
4823 jni_GetStaticFloatField,
4824 jni_GetStaticDoubleField,
4825
4826 jni_SetStaticObjectField,
4827 jni_SetStaticBooleanField,
4828 jni_SetStaticByteField,
4829 jni_SetStaticCharField,
4830 jni_SetStaticShortField,
4831 jni_SetStaticIntField,
4832 jni_SetStaticLongField,
4833 jni_SetStaticFloatField,
4834 jni_SetStaticDoubleField,
4835
4836 jni_NewString,
4837 jni_GetStringLength,
4838 jni_GetStringChars,
4839 jni_ReleaseStringChars,
4840
4841 jni_NewStringUTF,
4842 jni_GetStringUTFLength,
4843 jni_GetStringUTFChars,
4844 jni_ReleaseStringUTFChars,
4845
4846 jni_GetArrayLength,
4847
4848 jni_NewObjectArray,
4849 jni_GetObjectArrayElement,
4850 jni_SetObjectArrayElement,
4851
4852 jni_NewBooleanArray,
4853 jni_NewByteArray,
4854 jni_NewCharArray,
4855 jni_NewShortArray,
4856 jni_NewIntArray,
4857 jni_NewLongArray,
4858 jni_NewFloatArray,
4859 jni_NewDoubleArray,
4860
4861 jni_GetBooleanArrayElements,
4862 jni_GetByteArrayElements,
4863 jni_GetCharArrayElements,
4864 jni_GetShortArrayElements,
4865 jni_GetIntArrayElements,
4866 jni_GetLongArrayElements,
4867 jni_GetFloatArrayElements,
4868 jni_GetDoubleArrayElements,
4869
4870 jni_ReleaseBooleanArrayElements,
4871 jni_ReleaseByteArrayElements,
4872 jni_ReleaseCharArrayElements,
4873 jni_ReleaseShortArrayElements,
4874 jni_ReleaseIntArrayElements,
4875 jni_ReleaseLongArrayElements,
4876 jni_ReleaseFloatArrayElements,
4877 jni_ReleaseDoubleArrayElements,
4878
4879 jni_GetBooleanArrayRegion,
4880 jni_GetByteArrayRegion,
4881 jni_GetCharArrayRegion,
4882 jni_GetShortArrayRegion,
4883 jni_GetIntArrayRegion,
4884 jni_GetLongArrayRegion,
4885 jni_GetFloatArrayRegion,
4886 jni_GetDoubleArrayRegion,
4887
4888 jni_SetBooleanArrayRegion,
4889 jni_SetByteArrayRegion,
4890 jni_SetCharArrayRegion,
4891 jni_SetShortArrayRegion,
4892 jni_SetIntArrayRegion,
4893 jni_SetLongArrayRegion,
4894 jni_SetFloatArrayRegion,
4895 jni_SetDoubleArrayRegion,
4896
4897 jni_RegisterNatives,
4898 jni_UnregisterNatives,
4899
4900 jni_MonitorEnter,
4901 jni_MonitorExit,
4902
4903 jni_GetJavaVM,
4904
4905 jni_GetStringRegion,
4906 jni_GetStringUTFRegion,
4907
4908 jni_GetPrimitiveArrayCritical,
4909 jni_ReleasePrimitiveArrayCritical,
4910
4911 jni_GetStringCritical,
4912 jni_ReleaseStringCritical,
4913
4914 jni_NewWeakGlobalRef,
4915 jni_DeleteWeakGlobalRef,
4916
4917 jni_ExceptionCheck,
4918
4919 jni_NewDirectByteBuffer,
4920 jni_GetDirectBufferAddress,
4921 jni_GetDirectBufferCapacity,
4922
4923 // New 1_6 features
4924
4925 jni_GetObjectRefType
4926 };
4927
4928
4929 // For jvmti use to modify jni function table.
4930 // Java threads in native contiues to run until it is transitioned
4931 // to VM at safepoint. Before the transition or before it is blocked
4932 // for safepoint it may access jni function table. VM could crash if
4933 // any java thread access the jni function table in the middle of memcpy.
4934 // To avoid this each function pointers are copied automically.
4935 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4936 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4937 intptr_t *a = (intptr_t *) jni_functions();
4938 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4939 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4940 Atomic::store_ptr(*b++, a++);
4941 }
4942 }
4943
4944 void quicken_jni_functions() {
4945 // Replace Get<Primitive>Field with fast versions
4946 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4947 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4948 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4949 // windows x86 currently needs SEH wrapper and the gain of the fast
4950 // versions currently isn't certain for server vm on uniprocessor.
4951 && os::is_MP()
4952 #endif
4953 ) {
4954 address func;
4955 func = JNI_FastGetField::generate_fast_get_boolean_field();
4956 if (func != (address)-1) {
4957 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4958 }
4959 func = JNI_FastGetField::generate_fast_get_byte_field();
4960 if (func != (address)-1) {
4961 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4962 }
4963 func = JNI_FastGetField::generate_fast_get_char_field();
4964 if (func != (address)-1) {
4965 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4966 }
4967 func = JNI_FastGetField::generate_fast_get_short_field();
4968 if (func != (address)-1) {
4969 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4970 }
4971 func = JNI_FastGetField::generate_fast_get_int_field();
4972 if (func != (address)-1) {
4973 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4974 }
4975 func = JNI_FastGetField::generate_fast_get_long_field();
4976 if (func != (address)-1) {
4977 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4978 }
4979 func = JNI_FastGetField::generate_fast_get_float_field();
4980 if (func != (address)-1) {
4981 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4982 }
4983 func = JNI_FastGetField::generate_fast_get_double_field();
4984 if (func != (address)-1) {
4985 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4986 }
4987 }
4988 }
4989
4990 // Returns the function structure
4991 struct JNINativeInterface_* jni_functions() {
4992 #if INCLUDE_JNI_CHECK
4993 if (CheckJNICalls) return jni_functions_check();
4994 #endif // INCLUDE_JNI_CHECK
4995 return &jni_NativeInterface;
4996 }
4997
4998 // Returns the function structure
4999 struct JNINativeInterface_* jni_functions_nocheck() {
5000 return &jni_NativeInterface;
5001 }
5002
5003
5004 // Invocation API
5005
5006
5007 // Forward declaration
5008 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
5009
5010 // Global invocation API vars
5011 volatile jint vm_created = 0;
5012 // Indicate whether it is safe to recreate VM
5013 volatile jint safe_to_recreate_vm = 1;
5014 struct JavaVM_ main_vm = {&jni_InvokeInterface};
5015
5016
5017 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
5018 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
5019
5020 #ifndef USDT2
5021 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
5022 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
5023 #else /* USDT2 */
5024 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
5025 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
5026 #endif /* USDT2 */
5027
5028 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
5029 #ifndef USDT2
5030 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
5031 #else /* USDT2 */
5032 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
5033 args_);
5034 #endif /* USDT2 */
5035 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
5036 jint ret = JNI_ERR;
5037 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
5038
5039 if (Threads::is_supported_jni_version(args->version)) {
5040 ret = JNI_OK;
5041 }
5042 // 1.1 style no longer supported in hotspot.
5043 // According the JNI spec, we should update args->version on return.
5044 // We also use the structure to communicate with launcher about default
5045 // stack size.
5046 if (args->version == JNI_VERSION_1_1) {
5047 args->version = JNI_VERSION_1_2;
5048 // javaStackSize is int in arguments structure
5049 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5050 args->javaStackSize = (jint)(ThreadStackSize * K);
5051 }
5052 return ret;
5053 }
5054
5055 #ifndef PRODUCT
5056
5057 #include "gc_implementation/shared/gcTimer.hpp"
5058 #include "gc_interface/collectedHeap.hpp"
5059 #if INCLUDE_ALL_GCS
5060 #include "gc_implementation/g1/heapRegionRemSet.hpp"
5061 #endif
5062 #include "memory/guardedMemory.hpp"
5063 #include "utilities/quickSort.hpp"
5064 #include "utilities/ostream.hpp"
5065 #if INCLUDE_VM_STRUCTS
5066 #include "runtime/vmStructs.hpp"
5067 #endif
5068
5069 #define run_unit_test(unit_test_function_call) \
5070 tty->print_cr("Running test: " #unit_test_function_call); \
5071 unit_test_function_call
5072
5073 // Forward declaration
5074 void TestReservedSpace_test();
5075 void TestReserveMemorySpecial_test();
5076 void TestVirtualSpace_test();
5077 void TestMetaspaceAux_test();
5078 void TestMetachunk_test();
5079 void TestVirtualSpaceNode_test();
5080 void TestNewSize_test();
5081 void TestKlass_test();
5082 void Test_linked_list();
5083 void TestChunkedList_test();
5084 #if INCLUDE_ALL_GCS
5085 void TestOldFreeSpaceCalculation_test();
5086 void TestG1BiasedArray_test();
5087 void TestBufferingOopClosure_test();
5088 void TestCodeCacheRemSet_test();
5089 void FreeRegionList_test();
5090 #endif
5091
5092 void execute_internal_vm_tests() {
5093 if (ExecuteInternalVMTests) {
5094 tty->print_cr("Running internal VM tests");
5095 run_unit_test(TestReservedSpace_test());
5096 run_unit_test(TestReserveMemorySpecial_test());
5097 run_unit_test(TestVirtualSpace_test());
5098 run_unit_test(TestMetaspaceAux_test());
5099 run_unit_test(TestMetachunk_test());
5100 run_unit_test(TestVirtualSpaceNode_test());
5101 run_unit_test(GlobalDefinitions::test_globals());
5102 run_unit_test(GCTimerAllTest::all());
5103 run_unit_test(arrayOopDesc::test_max_array_length());
5104 run_unit_test(CollectedHeap::test_is_in());
5105 run_unit_test(QuickSort::test_quick_sort());
5106 run_unit_test(GuardedMemory::test_guarded_memory());
5107 run_unit_test(AltHashing::test_alt_hash());
5108 run_unit_test(test_loggc_filename());
5109 run_unit_test(TestNewSize_test());
5110 run_unit_test(TestKlass_test());
5111 run_unit_test(Test_linked_list());
5112 run_unit_test(TestChunkedList_test());
5113 #if INCLUDE_VM_STRUCTS
5114 run_unit_test(VMStructs::test());
5115 #endif
5116 #if INCLUDE_ALL_GCS
5117 run_unit_test(TestOldFreeSpaceCalculation_test());
5118 run_unit_test(TestG1BiasedArray_test());
5119 run_unit_test(HeapRegionRemSet::test_prt());
5120 run_unit_test(TestBufferingOopClosure_test());
5121 run_unit_test(TestCodeCacheRemSet_test());
5122 if (UseG1GC) {
5123 run_unit_test(FreeRegionList_test());
5124 }
5125 #endif
5126 tty->print_cr("All internal VM tests passed");
5127 }
5128 }
5129
5130 #undef run_unit_test
5131
5132 #endif
5133
5134 #ifndef USDT2
5135 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5136 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5137 #else /* USDT2 */
5138 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5139 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5140 #endif /* USDT2 */
5141
5142 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5143 #ifndef USDT2
5144 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5145 #else /* USDT2 */
5146 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5147 (void **) vm, penv, args);
5148 #endif /* USDT2 */
5149
5150 jint result = JNI_ERR;
5151 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5152
5153 // We're about to use Atomic::xchg for synchronization. Some Zero
5154 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5155 // but __sync_lock_test_and_set is not guaranteed to do what we want
5156 // on all architectures. So we check it works before relying on it.
5157 #if defined(ZERO) && defined(ASSERT)
5158 {
5159 jint a = 0xcafebabe;
5160 jint b = Atomic::xchg(0xdeadbeef, &a);
5161 void *c = &a;
5162 void *d = Atomic::xchg_ptr(&b, &c);
5163 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5164 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5165 }
5166 #endif // ZERO && ASSERT
5167
5168 // At the moment it's only possible to have one Java VM,
5169 // since some of the runtime state is in global variables.
5170
5171 // We cannot use our mutex locks here, since they only work on
5172 // Threads. We do an atomic compare and exchange to ensure only
5173 // one thread can call this method at a time
5174
5175 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5176 // the add/dec implementations are dependent on whether we are running
5177 // on a multiprocessor, and at this stage of initialization the os::is_MP
5178 // function used to determine this will always return false. Atomic::xchg
5179 // does not have this problem.
5180 if (Atomic::xchg(1, &vm_created) == 1) {
5181 return JNI_EEXIST; // already created, or create attempt in progress
5182 }
5183 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5184 return JNI_ERR; // someone tried and failed and retry not allowed.
5185 }
5186
5187 assert(vm_created == 1, "vm_created is true during the creation");
5188
5189 /**
5190 * Certain errors during initialization are recoverable and do not
5191 * prevent this method from being called again at a later time
5192 * (perhaps with different arguments). However, at a certain
5193 * point during initialization if an error occurs we cannot allow
5194 * this function to be called again (or it will crash). In those
5195 * situations, the 'canTryAgain' flag is set to false, which atomically
5196 * sets safe_to_recreate_vm to 1, such that any new call to
5197 * JNI_CreateJavaVM will immediately fail using the above logic.
5198 */
5199 bool can_try_again = true;
5200
5201 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5202 if (result == JNI_OK) {
5203 JavaThread *thread = JavaThread::current();
5204 /* thread is thread_in_vm here */
5205 *vm = (JavaVM *)(&main_vm);
5206 *(JNIEnv**)penv = thread->jni_environment();
5207
5208 // Tracks the time application was running before GC
5209 RuntimeService::record_application_start();
5210
5211 // Notify JVMTI
5212 if (JvmtiExport::should_post_thread_life()) {
5213 JvmtiExport::post_thread_start(thread);
5214 }
5215
5216 EventThreadStart event;
5217 if (event.should_commit()) {
5218 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5219 event.commit();
5220 }
5221
5222 #ifndef PRODUCT
5223 #ifndef CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED
5224 #define CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(f) f()
5225 #endif
5226
5227 // Check if we should compile all classes on bootclasspath
5228 if (CompileTheWorld) ClassLoader::compile_the_world();
5229 if (ReplayCompiles) ciReplay::replay(thread);
5230
5231 // Some platforms (like Win*) need a wrapper around these test
5232 // functions in order to properly handle error conditions.
5233 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(test_error_handler);
5234 CALL_TEST_FUNC_WITH_WRAPPER_IF_NEEDED(execute_internal_vm_tests);
5235 #endif
5236
5237 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5238 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5239 } else {
5240 if (can_try_again) {
5241 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5242 safe_to_recreate_vm = 1;
5243 }
5244
5245 // Creation failed. We must reset vm_created
5246 *vm = 0;
5247 *(JNIEnv**)penv = 0;
5248 // reset vm_created last to avoid race condition. Use OrderAccess to
5249 // control both compiler and architectural-based reordering.
5250 OrderAccess::release_store(&vm_created, 0);
5251 }
5252
5253 return result;
5254 }
5255
5256 #ifndef USDT2
5257 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5258 JavaVM**, jsize, jsize*);
5259 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5260 #endif /* !USDT2 */
5261
5262 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5263 // See bug 4367188, the wrapper can sometimes cause VM crashes
5264 // JNIWrapper("GetCreatedJavaVMs");
5265 #ifndef USDT2
5266 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5267 vm_buf, bufLen, numVMs);
5268 #else /* USDT2 */
5269 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5270 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5271 #endif /* USDT2 */
5272 if (vm_created) {
5273 if (numVMs != NULL) *numVMs = 1;
5274 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5275 } else {
5276 if (numVMs != NULL) *numVMs = 0;
5277 }
5278 #ifndef USDT2
5279 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5280 #else /* USDT2 */
5281 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5282 JNI_OK);
5283 #endif /* USDT2 */
5284 return JNI_OK;
5285 }
5286
5287 extern "C" {
5288
5289 #ifndef USDT2
5290 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5291 #else /* USDT2 */
5292 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5293 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5294 #endif /* USDT2 */
5295
5296 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5297 #ifndef USDT2
5298 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5299 #else /* USDT2 */
5300 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5301 vm);
5302 #endif /* USDT2 */
5303 jint res = JNI_ERR;
5304 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5305
5306 if (!vm_created) {
5307 res = JNI_ERR;
5308 return res;
5309 }
5310
5311 JNIWrapper("DestroyJavaVM");
5312 JNIEnv *env;
5313 JavaVMAttachArgs destroyargs;
5314 destroyargs.version = CurrentVersion;
5315 destroyargs.name = (char *)"DestroyJavaVM";
5316 destroyargs.group = NULL;
5317 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5318 if (res != JNI_OK) {
5319 return res;
5320 }
5321
5322 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5323 JavaThread* thread = JavaThread::current();
5324 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5325 if (Threads::destroy_vm()) {
5326 // Should not change thread state, VM is gone
5327 vm_created = false;
5328 res = JNI_OK;
5329 return res;
5330 } else {
5331 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5332 res = JNI_ERR;
5333 return res;
5334 }
5335 }
5336
5337
5338 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5339 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5340
5341 // Check below commented out from JDK1.2fcs as well
5342 /*
5343 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5344 return JNI_EVERSION;
5345 }
5346 */
5347
5348 Thread* t = ThreadLocalStorage::get_thread_slow();
5349 if (t != NULL) {
5350 // If the thread has been attached this operation is a no-op
5351 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5352 return JNI_OK;
5353 }
5354
5355 // Create a thread and mark it as attaching so it will be skipped by the
5356 // ThreadsListEnumerator - see CR 6404306
5357 JavaThread* thread = new JavaThread(true);
5358
5359 // Set correct safepoint info. The thread is going to call into Java when
5360 // initializing the Java level thread object. Hence, the correct state must
5361 // be set in order for the Safepoint code to deal with it correctly.
5362 thread->set_thread_state(_thread_in_vm);
5363 // Must do this before initialize_thread_local_storage
5364 thread->record_stack_base_and_size();
5365
5366 thread->initialize_thread_local_storage();
5367
5368 if (!os::create_attached_thread(thread)) {
5369 delete thread;
5370 return JNI_ERR;
5371 }
5372 // Enable stack overflow checks
5373 thread->create_stack_guard_pages();
5374
5375 thread->initialize_tlab();
5376
5377 thread->cache_global_variables();
5378
5379 // Crucial that we do not have a safepoint check for this thread, since it has
5380 // not been added to the Thread list yet.
5381 { Threads_lock->lock_without_safepoint_check();
5382 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5383 // avoid this thread trying to do a GC before it is added to the thread-list
5384 thread->set_active_handles(JNIHandleBlock::allocate_block());
5385 Threads::add(thread, daemon);
5386 Threads_lock->unlock();
5387 }
5388 // Create thread group and name info from attach arguments
5389 oop group = NULL;
5390 char* thread_name = NULL;
5391 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5392 group = JNIHandles::resolve(args->group);
5393 thread_name = args->name; // may be NULL
5394 }
5395 if (group == NULL) group = Universe::main_thread_group();
5396
5397 // Create Java level thread object and attach it to this thread
5398 bool attach_failed = false;
5399 {
5400 EXCEPTION_MARK;
5401 HandleMark hm(THREAD);
5402 Handle thread_group(THREAD, group);
5403 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5404 if (HAS_PENDING_EXCEPTION) {
5405 CLEAR_PENDING_EXCEPTION;
5406 // cleanup outside the handle mark.
5407 attach_failed = true;
5408 }
5409 }
5410
5411 if (attach_failed) {
5412 // Added missing cleanup
5413 thread->cleanup_failed_attach_current_thread();
5414 return JNI_ERR;
5415 }
5416
5417 // mark the thread as no longer attaching
5418 // this uses a fence to push the change through so we don't have
5419 // to regrab the threads_lock
5420 thread->set_done_attaching_via_jni();
5421
5422 // Set java thread status.
5423 java_lang_Thread::set_thread_status(thread->threadObj(),
5424 java_lang_Thread::RUNNABLE);
5425
5426 // Notify the debugger
5427 if (JvmtiExport::should_post_thread_life()) {
5428 JvmtiExport::post_thread_start(thread);
5429 }
5430
5431 EventThreadStart event;
5432 if (event.should_commit()) {
5433 event.set_javalangthread(java_lang_Thread::thread_id(thread->threadObj()));
5434 event.commit();
5435 }
5436
5437 *(JNIEnv**)penv = thread->jni_environment();
5438
5439 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5440 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5441 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5442 // needed.
5443
5444 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5445
5446 // Perform any platform dependent FPU setup
5447 os::setup_fpu();
5448
5449 return JNI_OK;
5450 }
5451
5452
5453 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5454 #ifndef USDT2
5455 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5456 #else /* USDT2 */
5457 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5458 vm, penv, _args);
5459 #endif /* USDT2 */
5460 if (!vm_created) {
5461 #ifndef USDT2
5462 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5463 #else /* USDT2 */
5464 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5465 (uint32_t) JNI_ERR);
5466 #endif /* USDT2 */
5467 return JNI_ERR;
5468 }
5469
5470 JNIWrapper("AttachCurrentThread");
5471 jint ret = attach_current_thread(vm, penv, _args, false);
5472 #ifndef USDT2
5473 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5474 #else /* USDT2 */
5475 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5476 ret);
5477 #endif /* USDT2 */
5478 return ret;
5479 }
5480
5481
5482 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5483 #ifndef USDT2
5484 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5485 #else /* USDT2 */
5486 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5487 vm);
5488 #endif /* USDT2 */
5489 VM_Exit::block_if_vm_exited();
5490
5491 JNIWrapper("DetachCurrentThread");
5492
5493 // If the thread has been deattacted the operations is a no-op
5494 if (ThreadLocalStorage::thread() == NULL) {
5495 #ifndef USDT2
5496 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5497 #else /* USDT2 */
5498 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5499 JNI_OK);
5500 #endif /* USDT2 */
5501 return JNI_OK;
5502 }
5503
5504 JavaThread* thread = JavaThread::current();
5505 if (thread->has_last_Java_frame()) {
5506 #ifndef USDT2
5507 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5508 #else /* USDT2 */
5509 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5510 (uint32_t) JNI_ERR);
5511 #endif /* USDT2 */
5512 // Can't detach a thread that's running java, that can't work.
5513 return JNI_ERR;
5514 }
5515
5516 // Safepoint support. Have to do call-back to safepoint code, if in the
5517 // middel of a safepoint operation
5518 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5519
5520 // XXX: Note that JavaThread::exit() call below removes the guards on the
5521 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5522 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5523 // of the guards is visible in jni_AttachCurrentThread above,
5524 // the removal of the guards is buried below in JavaThread::exit()
5525 // here. The abstraction should be more symmetrically either exposed
5526 // or hidden (e.g. it could probably be hidden in the same
5527 // (platform-dependent) methods where we do alternate stack
5528 // maintenance work?)
5529 thread->exit(false, JavaThread::jni_detach);
5530 delete thread;
5531
5532 #ifndef USDT2
5533 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5534 #else /* USDT2 */
5535 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5536 JNI_OK);
5537 #endif /* USDT2 */
5538 return JNI_OK;
5539 }
5540
5541 #ifndef USDT2
5542 DT_RETURN_MARK_DECL(GetEnv, jint);
5543 #else /* USDT2 */
5544 DT_RETURN_MARK_DECL(GetEnv, jint
5545 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5546 #endif /* USDT2 */
5547
5548 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5549 #ifndef USDT2
5550 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5551 #else /* USDT2 */
5552 HOTSPOT_JNI_GETENV_ENTRY(
5553 vm, penv, version);
5554 #endif /* USDT2 */
5555 jint ret = JNI_ERR;
5556 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5557
5558 if (!vm_created) {
5559 *penv = NULL;
5560 ret = JNI_EDETACHED;
5561 return ret;
5562 }
5563
5564 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5565 return ret;
5566 }
5567
5568 #ifndef JVMPI_VERSION_1
5569 // need these in order to be polite about older agents
5570 #define JVMPI_VERSION_1 ((jint)0x10000001)
5571 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5572 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5573 #endif // !JVMPI_VERSION_1
5574
5575 Thread* thread = ThreadLocalStorage::thread();
5576 if (thread != NULL && thread->is_Java_thread()) {
5577 if (Threads::is_supported_jni_version_including_1_1(version)) {
5578 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5579 ret = JNI_OK;
5580 return ret;
5581
5582 } else if (version == JVMPI_VERSION_1 ||
5583 version == JVMPI_VERSION_1_1 ||
5584 version == JVMPI_VERSION_1_2) {
5585 tty->print_cr("ERROR: JVMPI, an experimental interface, 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 if (JvmtiExport::is_jvmdi_version(version)) {
5590 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5591 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5592 ret = JNI_EVERSION;
5593 return ret;
5594 } else {
5595 *penv = NULL;
5596 ret = JNI_EVERSION;
5597 return ret;
5598 }
5599 } else {
5600 *penv = NULL;
5601 ret = JNI_EDETACHED;
5602 return ret;
5603 }
5604 }
5605
5606
5607 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5608 #ifndef USDT2
5609 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5610 #else /* USDT2 */
5611 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5612 vm, penv, _args);
5613 #endif /* USDT2 */
5614 if (!vm_created) {
5615 #ifndef USDT2
5616 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5617 #else /* USDT2 */
5618 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5619 (uint32_t) JNI_ERR);
5620 #endif /* USDT2 */
5621 return JNI_ERR;
5622 }
5623
5624 JNIWrapper("AttachCurrentThreadAsDaemon");
5625 jint ret = attach_current_thread(vm, penv, _args, true);
5626 #ifndef USDT2
5627 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5628 #else /* USDT2 */
5629 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5630 ret);
5631 #endif /* USDT2 */
5632 return ret;
5633 }
5634
5635
5636 } // End extern "C"
5637
5638 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5639 NULL,
5640 NULL,
5641 NULL,
5642
5643 jni_DestroyJavaVM,
5644 jni_AttachCurrentThread,
5645 jni_DetachCurrentThread,
5646 jni_GetEnv,
5647 jni_AttachCurrentThreadAsDaemon
5648 };