1 /*
2 * Copyright (c) 1997, 2013, 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/reflection.hpp"
71 #include "runtime/sharedRuntime.hpp"
72 #include "runtime/signature.hpp"
73 #include "runtime/thread.inline.hpp"
74 #include "runtime/vm_operations.hpp"
75 #include "services/runtimeService.hpp"
76 #include "trace/tracing.hpp"
77 #include "trace/traceEventTypes.hpp"
78 #include "utilities/defaultStream.hpp"
79 #include "utilities/dtrace.hpp"
80 #include "utilities/events.hpp"
81 #include "utilities/histogram.hpp"
82 #ifdef TARGET_OS_FAMILY_linux
83 # include "os_linux.inline.hpp"
84 #endif
85 #ifdef TARGET_OS_FAMILY_solaris
86 # include "os_solaris.inline.hpp"
87 #endif
88 #ifdef TARGET_OS_FAMILY_windows
89 # include "os_windows.inline.hpp"
90 #endif
91 #ifdef TARGET_OS_FAMILY_bsd
92 # include "os_bsd.inline.hpp"
93 #endif
94
95 static jint CurrentVersion = JNI_VERSION_1_8;
96
97
98 // The DT_RETURN_MARK macros create a scoped object to fire the dtrace
99 // '-return' probe regardless of the return path is taken out of the function.
100 // Methods that have multiple return paths use this to avoid having to
101 // instrument each return path. Methods that use CHECK or THROW must use this
102 // since those macros can cause an immedate uninstrumented return.
103 //
104 // In order to get the return value, a reference to the variable containing
105 // the return value must be passed to the contructor of the object, and
106 // the return value must be set before return (since the mark object has
107 // a reference to it).
108 //
109 // Example:
110 // DT_RETURN_MARK_DECL(SomeFunc, int);
111 // JNI_ENTRY(int, SomeFunc, ...)
112 // int return_value = 0;
113 // DT_RETURN_MARK(SomeFunc, int, (const int&)return_value);
114 // foo(CHECK_0)
115 // return_value = 5;
116 // return return_value;
117 // JNI_END
118 #ifndef USDT2
119 #define DT_RETURN_MARK_DECL(name, type) \
120 HS_DTRACE_PROBE_DECL1(hotspot_jni, name##__return, type); \
121 DTRACE_ONLY( \
122 class DTraceReturnProbeMark_##name { \
123 public: \
124 const type& _ret_ref; \
125 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
126 ~DTraceReturnProbeMark_##name() { \
127 HS_DTRACE_PROBE1(hotspot_jni, name##__return, _ret_ref); \
128 } \
129 } \
130 )
131 // Void functions are simpler since there's no return value
132 #define DT_VOID_RETURN_MARK_DECL(name) \
133 HS_DTRACE_PROBE_DECL0(hotspot_jni, name##__return); \
134 DTRACE_ONLY( \
135 class DTraceReturnProbeMark_##name { \
136 public: \
137 ~DTraceReturnProbeMark_##name() { \
138 HS_DTRACE_PROBE0(hotspot_jni, name##__return); \
139 } \
140 } \
141 )
142
143 #else /* USDT2 */
144
145 #define DT_RETURN_MARK_DECL(name, type, probe) \
146 DTRACE_ONLY( \
147 class DTraceReturnProbeMark_##name { \
148 public: \
149 const type& _ret_ref; \
150 DTraceReturnProbeMark_##name(const type& v) : _ret_ref(v) {} \
151 ~DTraceReturnProbeMark_##name() { \
152 probe; \
153 } \
154 } \
155 )
156 // Void functions are simpler since there's no return value
157 #define DT_VOID_RETURN_MARK_DECL(name, probe) \
158 DTRACE_ONLY( \
159 class DTraceReturnProbeMark_##name { \
160 public: \
161 ~DTraceReturnProbeMark_##name() { \
162 probe; \
163 } \
164 } \
165 )
166 #endif /* USDT2 */
167
168 // Place these macros in the function to mark the return. Non-void
169 // functions need the type and address of the return value.
170 #define DT_RETURN_MARK(name, type, ref) \
171 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark(ref) )
172 #define DT_VOID_RETURN_MARK(name) \
173 DTRACE_ONLY( DTraceReturnProbeMark_##name dtrace_return_mark )
174
175
176 // Use these to select distinct code for floating-point vs. non-floating point
177 // situations. Used from within common macros where we need slightly
178 // different behavior for Float/Double
179 #define FP_SELECT_Boolean(intcode, fpcode) intcode
180 #define FP_SELECT_Byte(intcode, fpcode) intcode
181 #define FP_SELECT_Char(intcode, fpcode) intcode
182 #define FP_SELECT_Short(intcode, fpcode) intcode
183 #define FP_SELECT_Object(intcode, fpcode) intcode
184 #define FP_SELECT_Int(intcode, fpcode) intcode
185 #define FP_SELECT_Long(intcode, fpcode) intcode
186 #define FP_SELECT_Float(intcode, fpcode) fpcode
187 #define FP_SELECT_Double(intcode, fpcode) fpcode
188 #define FP_SELECT(TypeName, intcode, fpcode) \
189 FP_SELECT_##TypeName(intcode, fpcode)
190
191 #define COMMA ,
192
193 // Choose DT_RETURN_MARK macros based on the type: float/double -> void
194 // (dtrace doesn't do FP yet)
195 #ifndef USDT2
196 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type) \
197 FP_SELECT(TypeName, \
198 DT_RETURN_MARK_DECL(name, type), DT_VOID_RETURN_MARK_DECL(name) )
199 #else /* USDT2 */
200 #define DT_RETURN_MARK_DECL_FOR(TypeName, name, type, probe) \
201 FP_SELECT(TypeName, \
202 DT_RETURN_MARK_DECL(name, type, probe), DT_VOID_RETURN_MARK_DECL(name, probe) )
203 #endif /* USDT2 */
204 #define DT_RETURN_MARK_FOR(TypeName, name, type, ref) \
205 FP_SELECT(TypeName, \
206 DT_RETURN_MARK(name, type, ref), DT_VOID_RETURN_MARK(name) )
207
208
209 // out-of-line helpers for class jfieldIDWorkaround:
210
211 bool jfieldIDWorkaround::is_valid_jfieldID(Klass* k, jfieldID id) {
212 if (jfieldIDWorkaround::is_instance_jfieldID(k, id)) {
213 uintptr_t as_uint = (uintptr_t) id;
214 intptr_t offset = raw_instance_offset(id);
215 if (is_checked_jfieldID(id)) {
216 if (!klass_hash_ok(k, id)) {
217 return false;
218 }
219 }
220 return InstanceKlass::cast(k)->contains_field_offset(offset);
221 } else {
222 JNIid* result = (JNIid*) id;
223 #ifdef ASSERT
224 return result != NULL && result->is_static_field_id();
225 #else
226 return result != NULL;
227 #endif
228 }
229 }
230
231
232 intptr_t jfieldIDWorkaround::encode_klass_hash(Klass* k, intptr_t offset) {
233 if (offset <= small_offset_mask) {
234 Klass* field_klass = k;
235 Klass* super_klass = field_klass->super();
236 // With compressed oops the most super class with nonstatic fields would
237 // be the owner of fields embedded in the header.
238 while (InstanceKlass::cast(super_klass)->has_nonstatic_fields() &&
239 InstanceKlass::cast(super_klass)->contains_field_offset(offset)) {
240 field_klass = super_klass; // super contains the field also
241 super_klass = field_klass->super();
242 }
243 debug_only(No_Safepoint_Verifier nosafepoint;)
244 uintptr_t klass_hash = field_klass->identity_hash();
245 return ((klass_hash & klass_mask) << klass_shift) | checked_mask_in_place;
246 } else {
247 #if 0
248 #ifndef PRODUCT
249 {
250 ResourceMark rm;
251 warning("VerifyJNIFields: long offset %d in %s", offset, k->external_name());
252 }
253 #endif
254 #endif
255 return 0;
256 }
257 }
258
259 bool jfieldIDWorkaround::klass_hash_ok(Klass* k, jfieldID id) {
260 uintptr_t as_uint = (uintptr_t) id;
261 intptr_t klass_hash = (as_uint >> klass_shift) & klass_mask;
262 do {
263 debug_only(No_Safepoint_Verifier nosafepoint;)
264 // Could use a non-blocking query for identity_hash here...
265 if ((k->identity_hash() & klass_mask) == klass_hash)
266 return true;
267 k = k->super();
268 } while (k != NULL);
269 return false;
270 }
271
272 void jfieldIDWorkaround::verify_instance_jfieldID(Klass* k, jfieldID id) {
273 guarantee(jfieldIDWorkaround::is_instance_jfieldID(k, id), "must be an instance field" );
274 uintptr_t as_uint = (uintptr_t) id;
275 intptr_t offset = raw_instance_offset(id);
276 if (VerifyJNIFields) {
277 if (is_checked_jfieldID(id)) {
278 guarantee(klass_hash_ok(k, id),
279 "Bug in native code: jfieldID class must match object");
280 } else {
281 #if 0
282 #ifndef PRODUCT
283 if (Verbose) {
284 ResourceMark rm;
285 warning("VerifyJNIFields: unverified offset %d for %s", offset, k->external_name());
286 }
287 #endif
288 #endif
289 }
290 }
291 guarantee(InstanceKlass::cast(k)->contains_field_offset(offset),
292 "Bug in native code: jfieldID offset must address interior of object");
293 }
294
295 // Pick a reasonable higher bound for local capacity requested
296 // for EnsureLocalCapacity and PushLocalFrame. We don't want it too
297 // high because a test (or very unusual application) may try to allocate
298 // that many handles and run out of swap space. An implementation is
299 // permitted to allocate more handles than the ensured capacity, so this
300 // value is set high enough to prevent compatibility problems.
301 const int MAX_REASONABLE_LOCAL_CAPACITY = 4*K;
302
303
304 // Wrapper to trace JNI functions
305
306 #ifdef ASSERT
307 Histogram* JNIHistogram;
308 static volatile jint JNIHistogram_lock = 0;
309
310 class JNITraceWrapper : public StackObj {
311 public:
312 JNITraceWrapper(const char* format, ...) {
313 if (TraceJNICalls) {
314 va_list ap;
315 va_start(ap, format);
316 tty->print("JNI ");
317 tty->vprint_cr(format, ap);
318 va_end(ap);
319 }
320 }
321 };
322
323 class JNIHistogramElement : public HistogramElement {
324 public:
325 JNIHistogramElement(const char* name);
326 };
327
328 JNIHistogramElement::JNIHistogramElement(const char* elementName) {
329 _name = elementName;
330 uintx count = 0;
331
332 while (Atomic::cmpxchg(1, &JNIHistogram_lock, 0) != 0) {
333 while (OrderAccess::load_acquire(&JNIHistogram_lock) != 0) {
334 count +=1;
335 if ( (WarnOnStalledSpinLock > 0)
336 && (count % WarnOnStalledSpinLock == 0)) {
337 warning("JNIHistogram_lock seems to be stalled");
338 }
339 }
340 }
341
342
343 if(JNIHistogram == NULL)
344 JNIHistogram = new Histogram("JNI Call Counts",100);
345
346 JNIHistogram->add_element(this);
347 Atomic::dec(&JNIHistogram_lock);
348 }
349
350 #define JNICountWrapper(arg) \
351 static JNIHistogramElement* e = new JNIHistogramElement(arg); \
352 /* There is a MT-race condition in VC++. So we need to make sure that that e has been initialized */ \
353 if (e != NULL) e->increment_count()
354 #define JNIWrapper(arg) JNICountWrapper(arg); JNITraceWrapper(arg)
355 #else
356 #define JNIWrapper(arg)
357 #endif
358
359
360 // Implementation of JNI entries
361
362 #ifndef USDT2
363 DT_RETURN_MARK_DECL(DefineClass, jclass);
364 #else /* USDT2 */
365 DT_RETURN_MARK_DECL(DefineClass, jclass
366 , HOTSPOT_JNI_DEFINECLASS_RETURN(_ret_ref));
367 #endif /* USDT2 */
368
369 JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderRef,
370 const jbyte *buf, jsize bufLen))
371 JNIWrapper("DefineClass");
372
373 #ifndef USDT2
374 DTRACE_PROBE5(hotspot_jni, DefineClass__entry,
375 env, name, loaderRef, buf, bufLen);
376 #else /* USDT2 */
377 HOTSPOT_JNI_DEFINECLASS_ENTRY(
378 env, (char*) name, loaderRef, (char*) buf, bufLen);
379 #endif /* USDT2 */
380 jclass cls = NULL;
381 DT_RETURN_MARK(DefineClass, jclass, (const jclass&)cls);
382
383 TempNewSymbol class_name = NULL;
384 // Since exceptions can be thrown, class initialization can take place
385 // if name is NULL no check for class name in .class stream has to be made.
386 if (name != NULL) {
387 const int str_len = (int)strlen(name);
388 if (str_len > Symbol::max_length()) {
389 // It's impossible to create this class; the name cannot fit
390 // into the constant pool.
391 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
392 }
393 class_name = SymbolTable::new_symbol(name, CHECK_NULL);
394 }
395 ResourceMark rm(THREAD);
396 ClassFileStream st((u1*) buf, bufLen, NULL);
397 Handle class_loader (THREAD, JNIHandles::resolve(loaderRef));
398
399 if (UsePerfData && !class_loader.is_null()) {
400 // check whether the current caller thread holds the lock or not.
401 // If not, increment the corresponding counter
402 if (ObjectSynchronizer::
403 query_lock_ownership((JavaThread*)THREAD, class_loader) !=
404 ObjectSynchronizer::owner_self) {
405 ClassLoader::sync_JNIDefineClassLockFreeCounter()->inc();
406 }
407 }
408 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader,
409 Handle(), &st, true,
410 CHECK_NULL);
411
412 if (TraceClassResolution && k != NULL) {
413 trace_class_resolution(k);
414 }
415
416 cls = (jclass)JNIHandles::make_local(
417 env, k->java_mirror());
418 return cls;
419 JNI_END
420
421
422
423 static bool first_time_FindClass = true;
424
425 #ifndef USDT2
426 DT_RETURN_MARK_DECL(FindClass, jclass);
427 #else /* USDT2 */
428 DT_RETURN_MARK_DECL(FindClass, jclass
429 , HOTSPOT_JNI_FINDCLASS_RETURN(_ret_ref));
430 #endif /* USDT2 */
431
432 JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
433 JNIWrapper("FindClass");
434 #ifndef USDT2
435 DTRACE_PROBE2(hotspot_jni, FindClass__entry, env, name);
436 #else /* USDT2 */
437 HOTSPOT_JNI_FINDCLASS_ENTRY(
438 env, (char *)name);
439 #endif /* USDT2 */
440
441 jclass result = NULL;
442 DT_RETURN_MARK(FindClass, jclass, (const jclass&)result);
443
444 // Remember if we are the first invocation of jni_FindClass
445 bool first_time = first_time_FindClass;
446 first_time_FindClass = false;
447
448 // Sanity check the name: it cannot be null or larger than the maximum size
449 // name we can fit in the constant pool.
450 if (name == NULL || (int)strlen(name) > Symbol::max_length()) {
451 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name);
452 }
453
454 //%note jni_3
455 Handle loader;
456 Handle protection_domain;
457 // Find calling class
458 instanceKlassHandle k (THREAD, thread->security_get_caller_class(0));
459 if (k.not_null()) {
460 loader = Handle(THREAD, k->class_loader());
461 // Special handling to make sure JNI_OnLoad and JNI_OnUnload are executed
462 // in the correct class context.
463 if (loader.is_null() &&
464 k->name() == vmSymbols::java_lang_ClassLoader_NativeLibrary()) {
465 JavaValue result(T_OBJECT);
466 JavaCalls::call_static(&result, k,
467 vmSymbols::getFromClass_name(),
468 vmSymbols::void_class_signature(),
469 thread);
470 if (HAS_PENDING_EXCEPTION) {
471 Handle ex(thread, thread->pending_exception());
472 CLEAR_PENDING_EXCEPTION;
473 THROW_HANDLE_0(ex);
474 }
475 oop mirror = (oop) result.get_jobject();
476 loader = Handle(THREAD,
477 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->class_loader());
478 protection_domain = Handle(THREAD,
479 InstanceKlass::cast(java_lang_Class::as_Klass(mirror))->protection_domain());
480 }
481 } else {
482 // We call ClassLoader.getSystemClassLoader to obtain the system class loader.
483 loader = Handle(THREAD, SystemDictionary::java_system_loader());
484 }
485
486 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
487 result = find_class_from_class_loader(env, sym, true, loader,
488 protection_domain, true, thread);
489
490 if (TraceClassResolution && result != NULL) {
491 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
492 }
493
494 // If we were the first invocation of jni_FindClass, we enable compilation again
495 // rather than just allowing invocation counter to overflow and decay.
496 // Controlled by flag DelayCompilationDuringStartup.
497 if (first_time && !CompileTheWorld)
498 CompilationPolicy::completed_vm_startup();
499
500 return result;
501 JNI_END
502
503 #ifndef USDT2
504 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID);
505 #else /* USDT2 */
506 DT_RETURN_MARK_DECL(FromReflectedMethod, jmethodID
507 , HOTSPOT_JNI_FROMREFLECTEDMETHOD_RETURN((uintptr_t)_ret_ref));
508 #endif /* USDT2 */
509
510 JNI_ENTRY(jmethodID, jni_FromReflectedMethod(JNIEnv *env, jobject method))
511 JNIWrapper("FromReflectedMethod");
512 #ifndef USDT2
513 DTRACE_PROBE2(hotspot_jni, FromReflectedMethod__entry, env, method);
514 #else /* USDT2 */
515 HOTSPOT_JNI_FROMREFLECTEDMETHOD_ENTRY(
516 env, method);
517 #endif /* USDT2 */
518 jmethodID ret = NULL;
519 DT_RETURN_MARK(FromReflectedMethod, jmethodID, (const jmethodID&)ret);
520
521 // method is a handle to a java.lang.reflect.Method object
522 oop reflected = JNIHandles::resolve_non_null(method);
523 oop mirror = NULL;
524 int slot = 0;
525
526 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) {
527 mirror = java_lang_reflect_Constructor::clazz(reflected);
528 slot = java_lang_reflect_Constructor::slot(reflected);
529 } else {
530 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), "wrong type");
531 mirror = java_lang_reflect_Method::clazz(reflected);
532 slot = java_lang_reflect_Method::slot(reflected);
533 }
534 Klass* k = java_lang_Class::as_Klass(mirror);
535
536 KlassHandle k1(THREAD, k);
537 // Make sure class is initialized before handing id's out to methods
538 k1()->initialize(CHECK_NULL);
539 Method* m = InstanceKlass::cast(k1())->method_with_idnum(slot);
540 ret = m==NULL? NULL : m->jmethod_id(); // return NULL if reflected method deleted
541 return ret;
542 JNI_END
543
544 #ifndef USDT2
545 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID);
546 #else /* USDT2 */
547 DT_RETURN_MARK_DECL(FromReflectedField, jfieldID
548 , HOTSPOT_JNI_FROMREFLECTEDFIELD_RETURN((uintptr_t)_ret_ref));
549 #endif /* USDT2 */
550
551 JNI_ENTRY(jfieldID, jni_FromReflectedField(JNIEnv *env, jobject field))
552 JNIWrapper("FromReflectedField");
553 #ifndef USDT2
554 DTRACE_PROBE2(hotspot_jni, FromReflectedField__entry, env, field);
555 #else /* USDT2 */
556 HOTSPOT_JNI_FROMREFLECTEDFIELD_ENTRY(
557 env, field);
558 #endif /* USDT2 */
559 jfieldID ret = NULL;
560 DT_RETURN_MARK(FromReflectedField, jfieldID, (const jfieldID&)ret);
561
562 // field is a handle to a java.lang.reflect.Field object
563 oop reflected = JNIHandles::resolve_non_null(field);
564 oop mirror = java_lang_reflect_Field::clazz(reflected);
565 Klass* k = java_lang_Class::as_Klass(mirror);
566 int slot = java_lang_reflect_Field::slot(reflected);
567 int modifiers = java_lang_reflect_Field::modifiers(reflected);
568
569 KlassHandle k1(THREAD, k);
570 // Make sure class is initialized before handing id's out to fields
571 k1()->initialize(CHECK_NULL);
572
573 // First check if this is a static field
574 if (modifiers & JVM_ACC_STATIC) {
575 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
576 JNIid* id = InstanceKlass::cast(k1())->jni_id_for(offset);
577 assert(id != NULL, "corrupt Field object");
578 debug_only(id->set_is_static_field_id();)
579 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
580 ret = jfieldIDWorkaround::to_static_jfieldID(id);
581 return ret;
582 }
583
584 // The slot is the index of the field description in the field-array
585 // The jfieldID is the offset of the field within the object
586 // It may also have hash bits for k, if VerifyJNIFields is turned on.
587 intptr_t offset = InstanceKlass::cast(k1())->field_offset( slot );
588 assert(InstanceKlass::cast(k1())->contains_field_offset(offset), "stay within object");
589 ret = jfieldIDWorkaround::to_instance_jfieldID(k1(), offset);
590 return ret;
591 JNI_END
592
593 #ifndef USDT2
594 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject);
595 #else /* USDT2 */
596 DT_RETURN_MARK_DECL(ToReflectedMethod, jobject
597 , HOTSPOT_JNI_TOREFLECTEDMETHOD_RETURN(_ret_ref));
598 #endif /* USDT2 */
599
600 JNI_ENTRY(jobject, jni_ToReflectedMethod(JNIEnv *env, jclass cls, jmethodID method_id, jboolean isStatic))
601 JNIWrapper("ToReflectedMethod");
602 #ifndef USDT2
603 DTRACE_PROBE4(hotspot_jni, ToReflectedMethod__entry, env, cls, method_id, isStatic);
604 #else /* USDT2 */
605 HOTSPOT_JNI_TOREFLECTEDMETHOD_ENTRY(
606 env, cls, (uintptr_t) method_id, isStatic);
607 #endif /* USDT2 */
608 jobject ret = NULL;
609 DT_RETURN_MARK(ToReflectedMethod, jobject, (const jobject&)ret);
610
611 methodHandle m (THREAD, Method::resolve_jmethod_id(method_id));
612 assert(m->is_static() == (isStatic != 0), "jni_ToReflectedMethod access flags doesn't match");
613 oop reflection_method;
614 if (m->is_initializer()) {
615 reflection_method = Reflection::new_constructor(m, CHECK_NULL);
616 } else {
617 reflection_method = Reflection::new_method(m, UseNewReflection, false, CHECK_NULL);
618 }
619 ret = JNIHandles::make_local(env, reflection_method);
620 return ret;
621 JNI_END
622
623 #ifndef USDT2
624 DT_RETURN_MARK_DECL(GetSuperclass, jclass);
625 #else /* USDT2 */
626 DT_RETURN_MARK_DECL(GetSuperclass, jclass
627 , HOTSPOT_JNI_GETSUPERCLASS_RETURN(_ret_ref));
628 #endif /* USDT2 */
629
630 JNI_ENTRY(jclass, jni_GetSuperclass(JNIEnv *env, jclass sub))
631 JNIWrapper("GetSuperclass");
632 #ifndef USDT2
633 DTRACE_PROBE2(hotspot_jni, GetSuperclass__entry, env, sub);
634 #else /* USDT2 */
635 HOTSPOT_JNI_GETSUPERCLASS_ENTRY(
636 env, sub);
637 #endif /* USDT2 */
638 jclass obj = NULL;
639 DT_RETURN_MARK(GetSuperclass, jclass, (const jclass&)obj);
640
641 oop mirror = JNIHandles::resolve_non_null(sub);
642 // primitive classes return NULL
643 if (java_lang_Class::is_primitive(mirror)) return NULL;
644
645 // Rules of Class.getSuperClass as implemented by KLass::java_super:
646 // arrays return Object
647 // interfaces return NULL
648 // proper classes return Klass::super()
649 Klass* k = java_lang_Class::as_Klass(mirror);
650 if (k->is_interface()) return NULL;
651
652 // return mirror for superclass
653 Klass* super = k->java_super();
654 // super2 is the value computed by the compiler's getSuperClass intrinsic:
655 debug_only(Klass* super2 = ( k->oop_is_array()
656 ? SystemDictionary::Object_klass()
657 : k->super() ) );
658 assert(super == super2,
659 "java_super computation depends on interface, array, other super");
660 obj = (super == NULL) ? NULL : (jclass) JNIHandles::make_local(super->java_mirror());
661 return obj;
662 JNI_END
663
664 JNI_QUICK_ENTRY(jboolean, jni_IsAssignableFrom(JNIEnv *env, jclass sub, jclass super))
665 JNIWrapper("IsSubclassOf");
666 #ifndef USDT2
667 DTRACE_PROBE3(hotspot_jni, IsAssignableFrom__entry, env, sub, super);
668 #else /* USDT2 */
669 HOTSPOT_JNI_ISASSIGNABLEFROM_ENTRY(
670 env, sub, super);
671 #endif /* USDT2 */
672 oop sub_mirror = JNIHandles::resolve_non_null(sub);
673 oop super_mirror = JNIHandles::resolve_non_null(super);
674 if (java_lang_Class::is_primitive(sub_mirror) ||
675 java_lang_Class::is_primitive(super_mirror)) {
676 jboolean ret = (sub_mirror == super_mirror);
677 #ifndef USDT2
678 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
679 #else /* USDT2 */
680 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
681 ret);
682 #endif /* USDT2 */
683 return ret;
684 }
685 Klass* sub_klass = java_lang_Class::as_Klass(sub_mirror);
686 Klass* super_klass = java_lang_Class::as_Klass(super_mirror);
687 assert(sub_klass != NULL && super_klass != NULL, "invalid arguments to jni_IsAssignableFrom");
688 jboolean ret = sub_klass->is_subtype_of(super_klass) ?
689 JNI_TRUE : JNI_FALSE;
690 #ifndef USDT2
691 DTRACE_PROBE1(hotspot_jni, IsAssignableFrom__return, ret);
692 #else /* USDT2 */
693 HOTSPOT_JNI_ISASSIGNABLEFROM_RETURN(
694 ret);
695 #endif /* USDT2 */
696 return ret;
697 JNI_END
698
699 #ifndef USDT2
700 DT_RETURN_MARK_DECL(Throw, jint);
701 #else /* USDT2 */
702 DT_RETURN_MARK_DECL(Throw, jint
703 , HOTSPOT_JNI_THROW_RETURN(_ret_ref));
704 #endif /* USDT2 */
705
706 JNI_ENTRY(jint, jni_Throw(JNIEnv *env, jthrowable obj))
707 JNIWrapper("Throw");
708 #ifndef USDT2
709 DTRACE_PROBE2(hotspot_jni, Throw__entry, env, obj);
710 #else /* USDT2 */
711 HOTSPOT_JNI_THROW_ENTRY(
712 env, obj);
713 #endif /* USDT2 */
714 jint ret = JNI_OK;
715 DT_RETURN_MARK(Throw, jint, (const jint&)ret);
716
717 THROW_OOP_(JNIHandles::resolve(obj), JNI_OK);
718 ShouldNotReachHere();
719 JNI_END
720
721 #ifndef USDT2
722 DT_RETURN_MARK_DECL(ThrowNew, jint);
723 #else /* USDT2 */
724 DT_RETURN_MARK_DECL(ThrowNew, jint
725 , HOTSPOT_JNI_THROWNEW_RETURN(_ret_ref));
726 #endif /* USDT2 */
727
728 JNI_ENTRY(jint, jni_ThrowNew(JNIEnv *env, jclass clazz, const char *message))
729 JNIWrapper("ThrowNew");
730 #ifndef USDT2
731 DTRACE_PROBE3(hotspot_jni, ThrowNew__entry, env, clazz, message);
732 #else /* USDT2 */
733 HOTSPOT_JNI_THROWNEW_ENTRY(
734 env, clazz, (char *) message);
735 #endif /* USDT2 */
736 jint ret = JNI_OK;
737 DT_RETURN_MARK(ThrowNew, jint, (const jint&)ret);
738
739 InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
740 Symbol* name = k->name();
741 Handle class_loader (THREAD, k->class_loader());
742 Handle protection_domain (THREAD, k->protection_domain());
743 THROW_MSG_LOADER_(name, (char *)message, class_loader, protection_domain, JNI_OK);
744 ShouldNotReachHere();
745 JNI_END
746
747
748 // JNI functions only transform a pending async exception to a synchronous
749 // exception in ExceptionOccurred and ExceptionCheck calls, since
750 // delivering an async exception in other places won't change the native
751 // code's control flow and would be harmful when native code further calls
752 // JNI functions with a pending exception. Async exception is also checked
753 // during the call, so ExceptionOccurred/ExceptionCheck won't return
754 // false but deliver the async exception at the very end during
755 // state transition.
756
757 static void jni_check_async_exceptions(JavaThread *thread) {
758 assert(thread == Thread::current(), "must be itself");
759 thread->check_and_handle_async_exceptions();
760 }
761
762 JNI_ENTRY_NO_PRESERVE(jthrowable, jni_ExceptionOccurred(JNIEnv *env))
763 JNIWrapper("ExceptionOccurred");
764 #ifndef USDT2
765 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__entry, env);
766 #else /* USDT2 */
767 HOTSPOT_JNI_EXCEPTIONOCCURRED_ENTRY(
768 env);
769 #endif /* USDT2 */
770 jni_check_async_exceptions(thread);
771 oop exception = thread->pending_exception();
772 jthrowable ret = (jthrowable) JNIHandles::make_local(env, exception);
773 #ifndef USDT2
774 DTRACE_PROBE1(hotspot_jni, ExceptionOccurred__return, ret);
775 #else /* USDT2 */
776 HOTSPOT_JNI_EXCEPTIONOCCURRED_RETURN(
777 ret);
778 #endif /* USDT2 */
779 return ret;
780 JNI_END
781
782
783 JNI_ENTRY_NO_PRESERVE(void, jni_ExceptionDescribe(JNIEnv *env))
784 JNIWrapper("ExceptionDescribe");
785 #ifndef USDT2
786 DTRACE_PROBE1(hotspot_jni, ExceptionDescribe__entry, env);
787 #else /* USDT2 */
788 HOTSPOT_JNI_EXCEPTIONDESCRIBE_ENTRY(
789 env);
790 #endif /* USDT2 */
791 if (thread->has_pending_exception()) {
792 Handle ex(thread, thread->pending_exception());
793 thread->clear_pending_exception();
794 if (ex->is_a(SystemDictionary::ThreadDeath_klass())) {
795 // Don't print anything if we are being killed.
796 } else {
797 jio_fprintf(defaultStream::error_stream(), "Exception ");
798 if (thread != NULL && thread->threadObj() != NULL) {
799 ResourceMark rm(THREAD);
800 jio_fprintf(defaultStream::error_stream(),
801 "in thread \"%s\" ", thread->get_thread_name());
802 }
803 if (ex->is_a(SystemDictionary::Throwable_klass())) {
804 JavaValue result(T_VOID);
805 JavaCalls::call_virtual(&result,
806 ex,
807 KlassHandle(THREAD,
808 SystemDictionary::Throwable_klass()),
809 vmSymbols::printStackTrace_name(),
810 vmSymbols::void_method_signature(),
811 THREAD);
812 // If an exception is thrown in the call it gets thrown away. Not much
813 // we can do with it. The native code that calls this, does not check
814 // for the exception - hence, it might still be in the thread when DestroyVM gets
815 // called, potentially causing a few asserts to trigger - since no pending exception
816 // is expected.
817 CLEAR_PENDING_EXCEPTION;
818 } else {
819 ResourceMark rm(THREAD);
820 jio_fprintf(defaultStream::error_stream(),
821 ". Uncaught exception of type %s.",
822 ex->klass()->external_name());
823 }
824 }
825 }
826 #ifndef USDT2
827 DTRACE_PROBE(hotspot_jni, ExceptionDescribe__return);
828 #else /* USDT2 */
829 HOTSPOT_JNI_EXCEPTIONDESCRIBE_RETURN(
830 );
831 #endif /* USDT2 */
832 JNI_END
833
834
835 JNI_QUICK_ENTRY(void, jni_ExceptionClear(JNIEnv *env))
836 JNIWrapper("ExceptionClear");
837 #ifndef USDT2
838 DTRACE_PROBE1(hotspot_jni, ExceptionClear__entry, env);
839 #else /* USDT2 */
840 HOTSPOT_JNI_EXCEPTIONCLEAR_ENTRY(
841 env);
842 #endif /* USDT2 */
843
844 // The jni code might be using this API to clear java thrown exception.
845 // So just mark jvmti thread exception state as exception caught.
846 JvmtiThreadState *state = JavaThread::current()->jvmti_thread_state();
847 if (state != NULL && state->is_exception_detected()) {
848 state->set_exception_caught();
849 }
850 thread->clear_pending_exception();
851 #ifndef USDT2
852 DTRACE_PROBE(hotspot_jni, ExceptionClear__return);
853 #else /* USDT2 */
854 HOTSPOT_JNI_EXCEPTIONCLEAR_RETURN(
855 );
856 #endif /* USDT2 */
857 JNI_END
858
859
860 JNI_ENTRY(void, jni_FatalError(JNIEnv *env, const char *msg))
861 JNIWrapper("FatalError");
862 #ifndef USDT2
863 DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
864 #else /* USDT2 */
865 HOTSPOT_JNI_FATALERROR_ENTRY(
866 env, (char *) msg);
867 #endif /* USDT2 */
868 tty->print_cr("FATAL ERROR in native method: %s", msg);
869 thread->print_stack();
870 os::abort(); // Dump core and abort
871 JNI_END
872
873
874 JNI_ENTRY(jint, jni_PushLocalFrame(JNIEnv *env, jint capacity))
875 JNIWrapper("PushLocalFrame");
876 #ifndef USDT2
877 DTRACE_PROBE2(hotspot_jni, PushLocalFrame__entry, env, capacity);
878 #else /* USDT2 */
879 HOTSPOT_JNI_PUSHLOCALFRAME_ENTRY(
880 env, capacity);
881 #endif /* USDT2 */
882 //%note jni_11
883 if (capacity < 0 && capacity > MAX_REASONABLE_LOCAL_CAPACITY) {
884 #ifndef USDT2
885 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, JNI_ERR);
886 #else /* USDT2 */
887 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
888 (uint32_t)JNI_ERR);
889 #endif /* USDT2 */
890 return JNI_ERR;
891 }
892 JNIHandleBlock* old_handles = thread->active_handles();
893 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
894 assert(new_handles != NULL, "should not be NULL");
895 new_handles->set_pop_frame_link(old_handles);
896 thread->set_active_handles(new_handles);
897 jint ret = JNI_OK;
898 #ifndef USDT2
899 DTRACE_PROBE1(hotspot_jni, PushLocalFrame__return, ret);
900 #else /* USDT2 */
901 HOTSPOT_JNI_PUSHLOCALFRAME_RETURN(
902 ret);
903 #endif /* USDT2 */
904 return ret;
905 JNI_END
906
907
908 JNI_ENTRY(jobject, jni_PopLocalFrame(JNIEnv *env, jobject result))
909 JNIWrapper("PopLocalFrame");
910 #ifndef USDT2
911 DTRACE_PROBE2(hotspot_jni, PopLocalFrame__entry, env, result);
912 #else /* USDT2 */
913 HOTSPOT_JNI_POPLOCALFRAME_ENTRY(
914 env, result);
915 #endif /* USDT2 */
916 //%note jni_11
917 Handle result_handle(thread, JNIHandles::resolve(result));
918 JNIHandleBlock* old_handles = thread->active_handles();
919 JNIHandleBlock* new_handles = old_handles->pop_frame_link();
920 if (new_handles != NULL) {
921 // As a sanity check we only release the handle blocks if the pop_frame_link is not NULL.
922 // This way code will still work if PopLocalFrame is called without a corresponding
923 // PushLocalFrame call. Note that we set the pop_frame_link to NULL explicitly, otherwise
924 // the release_block call will release the blocks.
925 thread->set_active_handles(new_handles);
926 old_handles->set_pop_frame_link(NULL); // clear link we won't release new_handles below
927 JNIHandleBlock::release_block(old_handles, thread); // may block
928 result = JNIHandles::make_local(thread, result_handle());
929 }
930 #ifndef USDT2
931 DTRACE_PROBE1(hotspot_jni, PopLocalFrame__return, result);
932 #else /* USDT2 */
933 HOTSPOT_JNI_POPLOCALFRAME_RETURN(
934 result);
935 #endif /* USDT2 */
936 return result;
937 JNI_END
938
939
940 JNI_ENTRY(jobject, jni_NewGlobalRef(JNIEnv *env, jobject ref))
941 JNIWrapper("NewGlobalRef");
942 #ifndef USDT2
943 DTRACE_PROBE2(hotspot_jni, NewGlobalRef__entry, env, ref);
944 #else /* USDT2 */
945 HOTSPOT_JNI_NEWGLOBALREF_ENTRY(
946 env, ref);
947 #endif /* USDT2 */
948 Handle ref_handle(thread, JNIHandles::resolve(ref));
949 jobject ret = JNIHandles::make_global(ref_handle);
950 #ifndef USDT2
951 DTRACE_PROBE1(hotspot_jni, NewGlobalRef__return, ret);
952 #else /* USDT2 */
953 HOTSPOT_JNI_NEWGLOBALREF_RETURN(
954 ret);
955 #endif /* USDT2 */
956 return ret;
957 JNI_END
958
959 // Must be JNI_ENTRY (with HandleMark)
960 JNI_ENTRY_NO_PRESERVE(void, jni_DeleteGlobalRef(JNIEnv *env, jobject ref))
961 JNIWrapper("DeleteGlobalRef");
962 #ifndef USDT2
963 DTRACE_PROBE2(hotspot_jni, DeleteGlobalRef__entry, env, ref);
964 #else /* USDT2 */
965 HOTSPOT_JNI_DELETEGLOBALREF_ENTRY(
966 env, ref);
967 #endif /* USDT2 */
968 JNIHandles::destroy_global(ref);
969 #ifndef USDT2
970 DTRACE_PROBE(hotspot_jni, DeleteGlobalRef__return);
971 #else /* USDT2 */
972 HOTSPOT_JNI_DELETEGLOBALREF_RETURN(
973 );
974 #endif /* USDT2 */
975 JNI_END
976
977 JNI_QUICK_ENTRY(void, jni_DeleteLocalRef(JNIEnv *env, jobject obj))
978 JNIWrapper("DeleteLocalRef");
979 #ifndef USDT2
980 DTRACE_PROBE2(hotspot_jni, DeleteLocalRef__entry, env, obj);
981 #else /* USDT2 */
982 HOTSPOT_JNI_DELETELOCALREF_ENTRY(
983 env, obj);
984 #endif /* USDT2 */
985 JNIHandles::destroy_local(obj);
986 #ifndef USDT2
987 DTRACE_PROBE(hotspot_jni, DeleteLocalRef__return);
988 #else /* USDT2 */
989 HOTSPOT_JNI_DELETELOCALREF_RETURN(
990 );
991 #endif /* USDT2 */
992 JNI_END
993
994 JNI_QUICK_ENTRY(jboolean, jni_IsSameObject(JNIEnv *env, jobject r1, jobject r2))
995 JNIWrapper("IsSameObject");
996 #ifndef USDT2
997 DTRACE_PROBE3(hotspot_jni, IsSameObject__entry, env, r1, r2);
998 #else /* USDT2 */
999 HOTSPOT_JNI_ISSAMEOBJECT_ENTRY(
1000 env, r1, r2);
1001 #endif /* USDT2 */
1002 oop a = JNIHandles::resolve(r1);
1003 oop b = JNIHandles::resolve(r2);
1004 jboolean ret = (a == b) ? JNI_TRUE : JNI_FALSE;
1005 #ifndef USDT2
1006 DTRACE_PROBE1(hotspot_jni, IsSameObject__return, ret);
1007 #else /* USDT2 */
1008 HOTSPOT_JNI_ISSAMEOBJECT_RETURN(
1009 ret);
1010 #endif /* USDT2 */
1011 return ret;
1012 JNI_END
1013
1014
1015 JNI_ENTRY(jobject, jni_NewLocalRef(JNIEnv *env, jobject ref))
1016 JNIWrapper("NewLocalRef");
1017 #ifndef USDT2
1018 DTRACE_PROBE2(hotspot_jni, NewLocalRef__entry, env, ref);
1019 #else /* USDT2 */
1020 HOTSPOT_JNI_NEWLOCALREF_ENTRY(
1021 env, ref);
1022 #endif /* USDT2 */
1023 jobject ret = JNIHandles::make_local(env, JNIHandles::resolve(ref));
1024 #ifndef USDT2
1025 DTRACE_PROBE1(hotspot_jni, NewLocalRef__return, ret);
1026 #else /* USDT2 */
1027 HOTSPOT_JNI_NEWLOCALREF_RETURN(
1028 ret);
1029 #endif /* USDT2 */
1030 return ret;
1031 JNI_END
1032
1033 JNI_LEAF(jint, jni_EnsureLocalCapacity(JNIEnv *env, jint capacity))
1034 JNIWrapper("EnsureLocalCapacity");
1035 #ifndef USDT2
1036 DTRACE_PROBE2(hotspot_jni, EnsureLocalCapacity__entry, env, capacity);
1037 #else /* USDT2 */
1038 HOTSPOT_JNI_ENSURELOCALCAPACITY_ENTRY(
1039 env, capacity);
1040 #endif /* USDT2 */
1041 jint ret;
1042 if (capacity >= 0 && capacity <= MAX_REASONABLE_LOCAL_CAPACITY) {
1043 ret = JNI_OK;
1044 } else {
1045 ret = JNI_ERR;
1046 }
1047 #ifndef USDT2
1048 DTRACE_PROBE1(hotspot_jni, EnsureLocalCapacity__return, ret);
1049 #else /* USDT2 */
1050 HOTSPOT_JNI_ENSURELOCALCAPACITY_RETURN(
1051 ret);
1052 #endif /* USDT2 */
1053 return ret;
1054 JNI_END
1055
1056 // Return the Handle Type
1057 JNI_LEAF(jobjectRefType, jni_GetObjectRefType(JNIEnv *env, jobject obj))
1058 JNIWrapper("GetObjectRefType");
1059 #ifndef USDT2
1060 DTRACE_PROBE2(hotspot_jni, GetObjectRefType__entry, env, obj);
1061 #else /* USDT2 */
1062 HOTSPOT_JNI_GETOBJECTREFTYPE_ENTRY(
1063 env, obj);
1064 #endif /* USDT2 */
1065 jobjectRefType ret;
1066 if (JNIHandles::is_local_handle(thread, obj) ||
1067 JNIHandles::is_frame_handle(thread, obj))
1068 ret = JNILocalRefType;
1069 else if (JNIHandles::is_global_handle(obj))
1070 ret = JNIGlobalRefType;
1071 else if (JNIHandles::is_weak_global_handle(obj))
1072 ret = JNIWeakGlobalRefType;
1073 else
1074 ret = JNIInvalidRefType;
1075 #ifndef USDT2
1076 DTRACE_PROBE1(hotspot_jni, GetObjectRefType__return, ret);
1077 #else /* USDT2 */
1078 HOTSPOT_JNI_GETOBJECTREFTYPE_RETURN(
1079 (void *) ret);
1080 #endif /* USDT2 */
1081 return ret;
1082 JNI_END
1083
1084
1085 class JNI_ArgumentPusher : public SignatureIterator {
1086 protected:
1087 JavaCallArguments* _arguments;
1088
1089 virtual void get_bool () = 0;
1090 virtual void get_char () = 0;
1091 virtual void get_short () = 0;
1092 virtual void get_byte () = 0;
1093 virtual void get_int () = 0;
1094 virtual void get_long () = 0;
1095 virtual void get_float () = 0;
1096 virtual void get_double () = 0;
1097 virtual void get_object () = 0;
1098
1099 JNI_ArgumentPusher(Symbol* signature) : SignatureIterator(signature) {
1100 this->_return_type = T_ILLEGAL;
1101 _arguments = NULL;
1102 }
1103
1104 public:
1105 virtual void iterate( uint64_t fingerprint ) = 0;
1106
1107 void set_java_argument_object(JavaCallArguments *arguments) { _arguments = arguments; }
1108
1109 inline void do_bool() { if (!is_return_type()) get_bool(); }
1110 inline void do_char() { if (!is_return_type()) get_char(); }
1111 inline void do_short() { if (!is_return_type()) get_short(); }
1112 inline void do_byte() { if (!is_return_type()) get_byte(); }
1113 inline void do_int() { if (!is_return_type()) get_int(); }
1114 inline void do_long() { if (!is_return_type()) get_long(); }
1115 inline void do_float() { if (!is_return_type()) get_float(); }
1116 inline void do_double() { if (!is_return_type()) get_double(); }
1117 inline void do_object(int begin, int end) { if (!is_return_type()) get_object(); }
1118 inline void do_array(int begin, int end) { if (!is_return_type()) get_object(); } // do_array uses get_object -- there is no get_array
1119 inline void do_void() { }
1120
1121 JavaCallArguments* arguments() { return _arguments; }
1122 void push_receiver(Handle h) { _arguments->push_oop(h); }
1123 };
1124
1125
1126 class JNI_ArgumentPusherVaArg : public JNI_ArgumentPusher {
1127 protected:
1128 va_list _ap;
1129
1130 inline void get_bool() { _arguments->push_int(va_arg(_ap, jint)); } // bool is coerced to int when using va_arg
1131 inline void get_char() { _arguments->push_int(va_arg(_ap, jint)); } // char is coerced to int when using va_arg
1132 inline void get_short() { _arguments->push_int(va_arg(_ap, jint)); } // short is coerced to int when using va_arg
1133 inline void get_byte() { _arguments->push_int(va_arg(_ap, jint)); } // byte is coerced to int when using va_arg
1134 inline void get_int() { _arguments->push_int(va_arg(_ap, jint)); }
1135
1136 // each of these paths is exercized by the various jck Call[Static,Nonvirtual,][Void,Int,..]Method[A,V,] tests
1137
1138 inline void get_long() { _arguments->push_long(va_arg(_ap, jlong)); }
1139 inline void get_float() { _arguments->push_float((jfloat)va_arg(_ap, jdouble)); } // float is coerced to double w/ va_arg
1140 inline void get_double() { _arguments->push_double(va_arg(_ap, jdouble)); }
1141 inline void get_object() { jobject l = va_arg(_ap, jobject);
1142 _arguments->push_oop(Handle((oop *)l, false)); }
1143
1144 inline void set_ap(va_list rap) {
1145 #ifdef va_copy
1146 va_copy(_ap, rap);
1147 #elif defined (__va_copy)
1148 __va_copy(_ap, rap);
1149 #else
1150 _ap = rap;
1151 #endif
1152 }
1153
1154 public:
1155 JNI_ArgumentPusherVaArg(Symbol* signature, va_list rap)
1156 : JNI_ArgumentPusher(signature) {
1157 set_ap(rap);
1158 }
1159 JNI_ArgumentPusherVaArg(jmethodID method_id, va_list rap)
1160 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1161 set_ap(rap);
1162 }
1163
1164 // Optimized path if we have the bitvector form of signature
1165 void iterate( uint64_t fingerprint ) {
1166 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate();// Must be too many arguments
1167 else {
1168 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1169 result_feature_mask);
1170
1171 assert(fingerprint, "Fingerprint should not be 0");
1172 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1173 while ( 1 ) {
1174 switch ( fingerprint & parameter_feature_mask ) {
1175 case bool_parm:
1176 case char_parm:
1177 case short_parm:
1178 case byte_parm:
1179 case int_parm:
1180 get_int();
1181 break;
1182 case obj_parm:
1183 get_object();
1184 break;
1185 case long_parm:
1186 get_long();
1187 break;
1188 case float_parm:
1189 get_float();
1190 break;
1191 case double_parm:
1192 get_double();
1193 break;
1194 case done_parm:
1195 return;
1196 break;
1197 default:
1198 ShouldNotReachHere();
1199 break;
1200 }
1201 fingerprint >>= parameter_feature_size;
1202 }
1203 }
1204 }
1205 };
1206
1207
1208 class JNI_ArgumentPusherArray : public JNI_ArgumentPusher {
1209 protected:
1210 const jvalue *_ap;
1211
1212 inline void get_bool() { _arguments->push_int((jint)(_ap++)->z); }
1213 inline void get_char() { _arguments->push_int((jint)(_ap++)->c); }
1214 inline void get_short() { _arguments->push_int((jint)(_ap++)->s); }
1215 inline void get_byte() { _arguments->push_int((jint)(_ap++)->b); }
1216 inline void get_int() { _arguments->push_int((jint)(_ap++)->i); }
1217
1218 inline void get_long() { _arguments->push_long((_ap++)->j); }
1219 inline void get_float() { _arguments->push_float((_ap++)->f); }
1220 inline void get_double() { _arguments->push_double((_ap++)->d);}
1221 inline void get_object() { _arguments->push_oop(Handle((oop *)(_ap++)->l, false)); }
1222
1223 inline void set_ap(const jvalue *rap) { _ap = rap; }
1224
1225 public:
1226 JNI_ArgumentPusherArray(Symbol* signature, const jvalue *rap)
1227 : JNI_ArgumentPusher(signature) {
1228 set_ap(rap);
1229 }
1230 JNI_ArgumentPusherArray(jmethodID method_id, const jvalue *rap)
1231 : JNI_ArgumentPusher(Method::resolve_jmethod_id(method_id)->signature()) {
1232 set_ap(rap);
1233 }
1234
1235 // Optimized path if we have the bitvector form of signature
1236 void iterate( uint64_t fingerprint ) {
1237 if ( fingerprint == UCONST64(-1) ) SignatureIterator::iterate(); // Must be too many arguments
1238 else {
1239 _return_type = (BasicType)((fingerprint >> static_feature_size) &
1240 result_feature_mask);
1241 assert(fingerprint, "Fingerprint should not be 0");
1242 fingerprint = fingerprint >> (static_feature_size + result_feature_size);
1243 while ( 1 ) {
1244 switch ( fingerprint & parameter_feature_mask ) {
1245 case bool_parm:
1246 get_bool();
1247 break;
1248 case char_parm:
1249 get_char();
1250 break;
1251 case short_parm:
1252 get_short();
1253 break;
1254 case byte_parm:
1255 get_byte();
1256 break;
1257 case int_parm:
1258 get_int();
1259 break;
1260 case obj_parm:
1261 get_object();
1262 break;
1263 case long_parm:
1264 get_long();
1265 break;
1266 case float_parm:
1267 get_float();
1268 break;
1269 case double_parm:
1270 get_double();
1271 break;
1272 case done_parm:
1273 return;
1274 break;
1275 default:
1276 ShouldNotReachHere();
1277 break;
1278 }
1279 fingerprint >>= parameter_feature_size;
1280 }
1281 }
1282 }
1283 };
1284
1285
1286 enum JNICallType {
1287 JNI_STATIC,
1288 JNI_VIRTUAL,
1289 JNI_NONVIRTUAL
1290 };
1291
1292
1293
1294 static void jni_invoke_static(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1295 methodHandle method(THREAD, Method::resolve_jmethod_id(method_id));
1296
1297 // Create object to hold arguments for the JavaCall, and associate it with
1298 // the jni parser
1299 ResourceMark rm(THREAD);
1300 int number_of_parameters = method->size_of_parameters();
1301 JavaCallArguments java_args(number_of_parameters);
1302 args->set_java_argument_object(&java_args);
1303
1304 assert(method->is_static(), "method should be static");
1305
1306 // Fill out JavaCallArguments object
1307 args->iterate( Fingerprinter(method).fingerprint() );
1308 // Initialize result type
1309 result->set_type(args->get_ret_type());
1310
1311 // Invoke the method. Result is returned as oop.
1312 JavaCalls::call(result, method, &java_args, CHECK);
1313
1314 // Convert result
1315 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1316 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1317 }
1318 }
1319
1320
1321 static void jni_invoke_nonstatic(JNIEnv *env, JavaValue* result, jobject receiver, JNICallType call_type, jmethodID method_id, JNI_ArgumentPusher *args, TRAPS) {
1322 oop recv = JNIHandles::resolve(receiver);
1323 if (recv == NULL) {
1324 THROW(vmSymbols::java_lang_NullPointerException());
1325 }
1326 Handle h_recv(THREAD, recv);
1327
1328 int number_of_parameters;
1329 Method* selected_method;
1330 {
1331 Method* m = Method::resolve_jmethod_id(method_id);
1332 number_of_parameters = m->size_of_parameters();
1333 Klass* holder = m->method_holder();
1334 if (!(holder)->is_interface()) {
1335 // non-interface call -- for that little speed boost, don't handlize
1336 debug_only(No_Safepoint_Verifier nosafepoint;)
1337 if (call_type == JNI_VIRTUAL) {
1338 // jni_GetMethodID makes sure class is linked and initialized
1339 // so m should have a valid vtable index.
1340 int vtbl_index = m->vtable_index();
1341 if (vtbl_index != Method::nonvirtual_vtable_index) {
1342 Klass* k = h_recv->klass();
1343 // k might be an arrayKlassOop but all vtables start at
1344 // the same place. The cast is to avoid virtual call and assertion.
1345 InstanceKlass *ik = (InstanceKlass*)k;
1346 selected_method = ik->method_at_vtable(vtbl_index);
1347 } else {
1348 // final method
1349 selected_method = m;
1350 }
1351 } else {
1352 // JNI_NONVIRTUAL call
1353 selected_method = m;
1354 }
1355 } else {
1356 // interface call
1357 KlassHandle h_holder(THREAD, holder);
1358
1359 int itbl_index = m->cached_itable_index();
1360 if (itbl_index == -1) {
1361 itbl_index = klassItable::compute_itable_index(m);
1362 m->set_cached_itable_index(itbl_index);
1363 // the above may have grabbed a lock, 'm' and anything non-handlized can't be used again
1364 }
1365 Klass* k = h_recv->klass();
1366 selected_method = InstanceKlass::cast(k)->method_at_itable(h_holder(), itbl_index, CHECK);
1367 }
1368 }
1369
1370 methodHandle method(THREAD, selected_method);
1371
1372 // Create object to hold arguments for the JavaCall, and associate it with
1373 // the jni parser
1374 ResourceMark rm(THREAD);
1375 JavaCallArguments java_args(number_of_parameters);
1376 args->set_java_argument_object(&java_args);
1377
1378 // handle arguments
1379 assert(!method->is_static(), "method should not be static");
1380 args->push_receiver(h_recv); // Push jobject handle
1381
1382 // Fill out JavaCallArguments object
1383 args->iterate( Fingerprinter(method).fingerprint() );
1384 // Initialize result type
1385 result->set_type(args->get_ret_type());
1386
1387 // Invoke the method. Result is returned as oop.
1388 JavaCalls::call(result, method, &java_args, CHECK);
1389
1390 // Convert result
1391 if (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY) {
1392 result->set_jobject(JNIHandles::make_local(env, (oop) result->get_jobject()));
1393 }
1394 }
1395
1396
1397 static instanceOop alloc_object(jclass clazz, TRAPS) {
1398 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1399 k()->check_valid_for_instantiation(false, CHECK_NULL);
1400 InstanceKlass::cast(k())->initialize(CHECK_NULL);
1401 instanceOop ih = InstanceKlass::cast(k())->allocate_instance(THREAD);
1402 return ih;
1403 }
1404
1405 #ifndef USDT2
1406 DT_RETURN_MARK_DECL(AllocObject, jobject);
1407 #else /* USDT2 */
1408 DT_RETURN_MARK_DECL(AllocObject, jobject
1409 , HOTSPOT_JNI_ALLOCOBJECT_RETURN(_ret_ref));
1410 #endif /* USDT2 */
1411
1412 JNI_ENTRY(jobject, jni_AllocObject(JNIEnv *env, jclass clazz))
1413 JNIWrapper("AllocObject");
1414
1415 #ifndef USDT2
1416 DTRACE_PROBE2(hotspot_jni, AllocObject__entry, env, clazz);
1417 #else /* USDT2 */
1418 HOTSPOT_JNI_ALLOCOBJECT_ENTRY(
1419 env, clazz);
1420 #endif /* USDT2 */
1421 jobject ret = NULL;
1422 DT_RETURN_MARK(AllocObject, jobject, (const jobject&)ret);
1423
1424 instanceOop i = alloc_object(clazz, CHECK_NULL);
1425 ret = JNIHandles::make_local(env, i);
1426 return ret;
1427 JNI_END
1428
1429 #ifndef USDT2
1430 DT_RETURN_MARK_DECL(NewObjectA, jobject);
1431 #else /* USDT2 */
1432 DT_RETURN_MARK_DECL(NewObjectA, jobject
1433 , HOTSPOT_JNI_NEWOBJECTA_RETURN(_ret_ref));
1434 #endif /* USDT2 */
1435
1436 JNI_ENTRY(jobject, jni_NewObjectA(JNIEnv *env, jclass clazz, jmethodID methodID, const jvalue *args))
1437 JNIWrapper("NewObjectA");
1438 #ifndef USDT2
1439 DTRACE_PROBE3(hotspot_jni, NewObjectA__entry, env, clazz, methodID);
1440 #else /* USDT2 */
1441 HOTSPOT_JNI_NEWOBJECTA_ENTRY(
1442 env, clazz, (uintptr_t) methodID);
1443 #endif /* USDT2 */
1444 jobject obj = NULL;
1445 DT_RETURN_MARK(NewObjectA, jobject, (const jobject)obj);
1446
1447 instanceOop i = alloc_object(clazz, CHECK_NULL);
1448 obj = JNIHandles::make_local(env, i);
1449 JavaValue jvalue(T_VOID);
1450 JNI_ArgumentPusherArray ap(methodID, args);
1451 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1452 return obj;
1453 JNI_END
1454
1455 #ifndef USDT2
1456 DT_RETURN_MARK_DECL(NewObjectV, jobject);
1457 #else /* USDT2 */
1458 DT_RETURN_MARK_DECL(NewObjectV, jobject
1459 , HOTSPOT_JNI_NEWOBJECTV_RETURN(_ret_ref));
1460 #endif /* USDT2 */
1461
1462 JNI_ENTRY(jobject, jni_NewObjectV(JNIEnv *env, jclass clazz, jmethodID methodID, va_list args))
1463 JNIWrapper("NewObjectV");
1464 #ifndef USDT2
1465 DTRACE_PROBE3(hotspot_jni, NewObjectV__entry, env, clazz, methodID);
1466 #else /* USDT2 */
1467 HOTSPOT_JNI_NEWOBJECTV_ENTRY(
1468 env, clazz, (uintptr_t) methodID);
1469 #endif /* USDT2 */
1470 jobject obj = NULL;
1471 DT_RETURN_MARK(NewObjectV, jobject, (const jobject&)obj);
1472
1473 instanceOop i = alloc_object(clazz, CHECK_NULL);
1474 obj = JNIHandles::make_local(env, i);
1475 JavaValue jvalue(T_VOID);
1476 JNI_ArgumentPusherVaArg ap(methodID, args);
1477 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1478 return obj;
1479 JNI_END
1480
1481 #ifndef USDT2
1482 DT_RETURN_MARK_DECL(NewObject, jobject);
1483 #else /* USDT2 */
1484 DT_RETURN_MARK_DECL(NewObject, jobject
1485 , HOTSPOT_JNI_NEWOBJECT_RETURN(_ret_ref));
1486 #endif /* USDT2 */
1487
1488 JNI_ENTRY(jobject, jni_NewObject(JNIEnv *env, jclass clazz, jmethodID methodID, ...))
1489 JNIWrapper("NewObject");
1490 #ifndef USDT2
1491 DTRACE_PROBE3(hotspot_jni, NewObject__entry, env, clazz, methodID);
1492 #else /* USDT2 */
1493 HOTSPOT_JNI_NEWOBJECT_ENTRY(
1494 env, clazz, (uintptr_t) methodID);
1495 #endif /* USDT2 */
1496 jobject obj = NULL;
1497 DT_RETURN_MARK(NewObject, jobject, (const jobject&)obj);
1498
1499 instanceOop i = alloc_object(clazz, CHECK_NULL);
1500 obj = JNIHandles::make_local(env, i);
1501 va_list args;
1502 va_start(args, methodID);
1503 JavaValue jvalue(T_VOID);
1504 JNI_ArgumentPusherVaArg ap(methodID, args);
1505 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_NULL);
1506 va_end(args);
1507 return obj;
1508 JNI_END
1509
1510
1511 JNI_ENTRY(jclass, jni_GetObjectClass(JNIEnv *env, jobject obj))
1512 JNIWrapper("GetObjectClass");
1513 #ifndef USDT2
1514 DTRACE_PROBE2(hotspot_jni, GetObjectClass__entry, env, obj);
1515 #else /* USDT2 */
1516 HOTSPOT_JNI_GETOBJECTCLASS_ENTRY(
1517 env, obj);
1518 #endif /* USDT2 */
1519 Klass* k = JNIHandles::resolve_non_null(obj)->klass();
1520 jclass ret =
1521 (jclass) JNIHandles::make_local(env, k->java_mirror());
1522 #ifndef USDT2
1523 DTRACE_PROBE1(hotspot_jni, GetObjectClass__return, ret);
1524 #else /* USDT2 */
1525 HOTSPOT_JNI_GETOBJECTCLASS_RETURN(
1526 ret);
1527 #endif /* USDT2 */
1528 return ret;
1529 JNI_END
1530
1531 JNI_QUICK_ENTRY(jboolean, jni_IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz))
1532 JNIWrapper("IsInstanceOf");
1533 #ifndef USDT2
1534 DTRACE_PROBE3(hotspot_jni, IsInstanceOf__entry, env, obj, clazz);
1535 #else /* USDT2 */
1536 HOTSPOT_JNI_ISINSTANCEOF_ENTRY(
1537 env, obj, clazz);
1538 #endif /* USDT2 */
1539 jboolean ret = JNI_TRUE;
1540 if (obj != NULL) {
1541 ret = JNI_FALSE;
1542 Klass* k = java_lang_Class::as_Klass(
1543 JNIHandles::resolve_non_null(clazz));
1544 if (k != NULL) {
1545 ret = JNIHandles::resolve_non_null(obj)->is_a(k) ? JNI_TRUE : JNI_FALSE;
1546 }
1547 }
1548 #ifndef USDT2
1549 DTRACE_PROBE1(hotspot_jni, IsInstanceOf__return, ret);
1550 #else /* USDT2 */
1551 HOTSPOT_JNI_ISINSTANCEOF_RETURN(
1552 ret);
1553 #endif /* USDT2 */
1554 return ret;
1555 JNI_END
1556
1557
1558 static jmethodID get_method_id(JNIEnv *env, jclass clazz, const char *name_str,
1559 const char *sig, bool is_static, TRAPS) {
1560 // %%%% This code should probably just call into a method in the LinkResolver
1561 //
1562 // The class should have been loaded (we have an instance of the class
1563 // passed in) so the method and signature should already be in the symbol
1564 // table. If they're not there, the method doesn't exist.
1565 const char *name_to_probe = (name_str == NULL)
1566 ? vmSymbols::object_initializer_name()->as_C_string()
1567 : name_str;
1568 TempNewSymbol name = SymbolTable::probe(name_to_probe, (int)strlen(name_to_probe));
1569 TempNewSymbol signature = SymbolTable::probe(sig, (int)strlen(sig));
1570
1571 if (name == NULL || signature == NULL) {
1572 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1573 }
1574
1575 // Throw a NoSuchMethodError exception if we have an instance of a
1576 // primitive java.lang.Class
1577 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(clazz))) {
1578 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1579 }
1580
1581 KlassHandle klass(THREAD,
1582 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
1583
1584 // Make sure class is linked and initialized before handing id's out to
1585 // Method*s.
1586 klass()->initialize(CHECK_NULL);
1587
1588 Method* m;
1589 if (name == vmSymbols::object_initializer_name() ||
1590 name == vmSymbols::class_initializer_name()) {
1591 // Never search superclasses for constructors
1592 if (klass->oop_is_instance()) {
1593 m = InstanceKlass::cast(klass())->find_method(name, signature);
1594 } else {
1595 m = NULL;
1596 }
1597 } else {
1598 m = klass->lookup_method(name, signature);
1599 // Look up interfaces
1600 if (m == NULL && klass->oop_is_instance()) {
1601 m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name,
1602 signature);
1603 }
1604 }
1605 if (m == NULL || (m->is_static() != is_static)) {
1606 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), name_str);
1607 }
1608 return m->jmethod_id();
1609 }
1610
1611
1612 JNI_ENTRY(jmethodID, jni_GetMethodID(JNIEnv *env, jclass clazz,
1613 const char *name, const char *sig))
1614 JNIWrapper("GetMethodID");
1615 #ifndef USDT2
1616 DTRACE_PROBE4(hotspot_jni, GetMethodID__entry, env, clazz, name, sig);
1617 #else /* USDT2 */
1618 HOTSPOT_JNI_GETMETHODID_ENTRY(
1619 env, clazz, (char *) name, (char *) sig);
1620 #endif /* USDT2 */
1621 jmethodID ret = get_method_id(env, clazz, name, sig, false, thread);
1622 #ifndef USDT2
1623 DTRACE_PROBE1(hotspot_jni, GetMethodID__return, ret);
1624 #else /* USDT2 */
1625 HOTSPOT_JNI_GETMETHODID_RETURN(
1626 (uintptr_t) ret);
1627 #endif /* USDT2 */
1628 return ret;
1629 JNI_END
1630
1631
1632 JNI_ENTRY(jmethodID, jni_GetStaticMethodID(JNIEnv *env, jclass clazz,
1633 const char *name, const char *sig))
1634 JNIWrapper("GetStaticMethodID");
1635 #ifndef USDT2
1636 DTRACE_PROBE4(hotspot_jni, GetStaticMethodID__entry, env, clazz, name, sig);
1637 #else /* USDT2 */
1638 HOTSPOT_JNI_GETSTATICMETHODID_ENTRY(
1639 env, (char *) clazz, (char *) name, (char *)sig);
1640 #endif /* USDT2 */
1641 jmethodID ret = get_method_id(env, clazz, name, sig, true, thread);
1642 #ifndef USDT2
1643 DTRACE_PROBE1(hotspot_jni, GetStaticMethodID__return, ret);
1644 #else /* USDT2 */
1645 HOTSPOT_JNI_GETSTATICMETHODID_RETURN(
1646 (uintptr_t) ret);
1647 #endif /* USDT2 */
1648 return ret;
1649 JNI_END
1650
1651
1652
1653 //
1654 // Calling Methods
1655 //
1656
1657 #ifndef USDT2
1658 #define DEFINE_CALLMETHOD(ResultType, Result, Tag) \
1659 \
1660 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType);\
1661 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType);\
1662 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType);\
1663 \
1664 JNI_ENTRY(ResultType, \
1665 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1666 JNIWrapper("Call" XSTR(Result) "Method"); \
1667 \
1668 DTRACE_PROBE3(hotspot_jni, Call##Result##Method__entry, env, obj, methodID); \
1669 ResultType ret = 0;\
1670 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1671 (const ResultType&)ret);\
1672 \
1673 va_list args; \
1674 va_start(args, methodID); \
1675 JavaValue jvalue(Tag); \
1676 JNI_ArgumentPusherVaArg ap(methodID, args); \
1677 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1678 va_end(args); \
1679 ret = jvalue.get_##ResultType(); \
1680 return ret;\
1681 JNI_END \
1682 \
1683 \
1684 JNI_ENTRY(ResultType, \
1685 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1686 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1687 \
1688 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodV__entry, env, obj, methodID); \
1689 ResultType ret = 0;\
1690 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1691 (const ResultType&)ret);\
1692 \
1693 JavaValue jvalue(Tag); \
1694 JNI_ArgumentPusherVaArg ap(methodID, args); \
1695 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1696 ret = jvalue.get_##ResultType(); \
1697 return ret;\
1698 JNI_END \
1699 \
1700 \
1701 JNI_ENTRY(ResultType, \
1702 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1703 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1704 DTRACE_PROBE3(hotspot_jni, Call##Result##MethodA__entry, env, obj, methodID); \
1705 ResultType ret = 0;\
1706 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1707 (const ResultType&)ret);\
1708 \
1709 JavaValue jvalue(Tag); \
1710 JNI_ArgumentPusherArray ap(methodID, args); \
1711 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1712 ret = jvalue.get_##ResultType(); \
1713 return ret;\
1714 JNI_END
1715
1716 // the runtime type of subword integral basic types is integer
1717 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN)
1718 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE)
1719 DEFINE_CALLMETHOD(jchar, Char, T_CHAR)
1720 DEFINE_CALLMETHOD(jshort, Short, T_SHORT)
1721
1722 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT)
1723 DEFINE_CALLMETHOD(jint, Int, T_INT)
1724 DEFINE_CALLMETHOD(jlong, Long, T_LONG)
1725 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT)
1726 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE)
1727
1728 DT_VOID_RETURN_MARK_DECL(CallVoidMethod);
1729 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV);
1730 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA);
1731
1732 #else /* USDT2 */
1733
1734 #define DEFINE_CALLMETHOD(ResultType, Result, Tag \
1735 , EntryProbe, ReturnProbe) \
1736 \
1737 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##Method, ResultType \
1738 , ReturnProbe); \
1739 \
1740 JNI_ENTRY(ResultType, \
1741 jni_Call##Result##Method(JNIEnv *env, jobject obj, jmethodID methodID, ...)) \
1742 JNIWrapper("Call" XSTR(Result) "Method"); \
1743 \
1744 EntryProbe; \
1745 ResultType ret = 0;\
1746 DT_RETURN_MARK_FOR(Result, Call##Result##Method, ResultType, \
1747 (const ResultType&)ret);\
1748 \
1749 va_list args; \
1750 va_start(args, methodID); \
1751 JavaValue jvalue(Tag); \
1752 JNI_ArgumentPusherVaArg ap(methodID, args); \
1753 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1754 va_end(args); \
1755 ret = jvalue.get_##ResultType(); \
1756 return ret;\
1757 JNI_END
1758
1759 // the runtime type of subword integral basic types is integer
1760 DEFINE_CALLMETHOD(jboolean, Boolean, T_BOOLEAN
1761 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1762 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1763 DEFINE_CALLMETHOD(jbyte, Byte, T_BYTE
1764 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1765 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1766 DEFINE_CALLMETHOD(jchar, Char, T_CHAR
1767 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1768 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1769 DEFINE_CALLMETHOD(jshort, Short, T_SHORT
1770 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1771 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1772
1773 DEFINE_CALLMETHOD(jobject, Object, T_OBJECT
1774 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1775 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1776 DEFINE_CALLMETHOD(jint, Int, T_INT,
1777 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1778 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1779 DEFINE_CALLMETHOD(jlong, Long, T_LONG
1780 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1781 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1782 // Float and double probes don't return value because dtrace doesn't currently support it
1783 DEFINE_CALLMETHOD(jfloat, Float, T_FLOAT
1784 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1785 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1786 DEFINE_CALLMETHOD(jdouble, Double, T_DOUBLE
1787 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1788 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1789
1790 #define DEFINE_CALLMETHODV(ResultType, Result, Tag \
1791 , EntryProbe, ReturnProbe) \
1792 \
1793 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodV, ResultType \
1794 , ReturnProbe); \
1795 \
1796 JNI_ENTRY(ResultType, \
1797 jni_Call##Result##MethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args)) \
1798 JNIWrapper("Call" XSTR(Result) "MethodV"); \
1799 \
1800 EntryProbe;\
1801 ResultType ret = 0;\
1802 DT_RETURN_MARK_FOR(Result, Call##Result##MethodV, ResultType, \
1803 (const ResultType&)ret);\
1804 \
1805 JavaValue jvalue(Tag); \
1806 JNI_ArgumentPusherVaArg ap(methodID, args); \
1807 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1808 ret = jvalue.get_##ResultType(); \
1809 return ret;\
1810 JNI_END
1811
1812 // the runtime type of subword integral basic types is integer
1813 DEFINE_CALLMETHODV(jboolean, Boolean, T_BOOLEAN
1814 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1815 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1816 DEFINE_CALLMETHODV(jbyte, Byte, T_BYTE
1817 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1818 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1819 DEFINE_CALLMETHODV(jchar, Char, T_CHAR
1820 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1821 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1822 DEFINE_CALLMETHODV(jshort, Short, T_SHORT
1823 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1824 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1825
1826 DEFINE_CALLMETHODV(jobject, Object, T_OBJECT
1827 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1828 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1829 DEFINE_CALLMETHODV(jint, Int, T_INT,
1830 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1831 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1832 DEFINE_CALLMETHODV(jlong, Long, T_LONG
1833 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1834 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1835 // Float and double probes don't return value because dtrace doesn't currently support it
1836 DEFINE_CALLMETHODV(jfloat, Float, T_FLOAT
1837 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1838 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1839 DEFINE_CALLMETHODV(jdouble, Double, T_DOUBLE
1840 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1841 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1842
1843 #define DEFINE_CALLMETHODA(ResultType, Result, Tag \
1844 , EntryProbe, ReturnProbe) \
1845 \
1846 DT_RETURN_MARK_DECL_FOR(Result, Call##Result##MethodA, ResultType \
1847 , ReturnProbe); \
1848 \
1849 JNI_ENTRY(ResultType, \
1850 jni_Call##Result##MethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args)) \
1851 JNIWrapper("Call" XSTR(Result) "MethodA"); \
1852 EntryProbe; \
1853 ResultType ret = 0;\
1854 DT_RETURN_MARK_FOR(Result, Call##Result##MethodA, ResultType, \
1855 (const ResultType&)ret);\
1856 \
1857 JavaValue jvalue(Tag); \
1858 JNI_ArgumentPusherArray ap(methodID, args); \
1859 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK_0); \
1860 ret = jvalue.get_##ResultType(); \
1861 return ret;\
1862 JNI_END
1863
1864 // the runtime type of subword integral basic types is integer
1865 DEFINE_CALLMETHODA(jboolean, Boolean, T_BOOLEAN
1866 , HOTSPOT_JNI_CALLBOOLEANMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1867 HOTSPOT_JNI_CALLBOOLEANMETHOD_RETURN(_ret_ref))
1868 DEFINE_CALLMETHODA(jbyte, Byte, T_BYTE
1869 , HOTSPOT_JNI_CALLBYTEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1870 HOTSPOT_JNI_CALLBYTEMETHOD_RETURN(_ret_ref))
1871 DEFINE_CALLMETHODA(jchar, Char, T_CHAR
1872 , HOTSPOT_JNI_CALLCHARMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1873 HOTSPOT_JNI_CALLCHARMETHOD_RETURN(_ret_ref))
1874 DEFINE_CALLMETHODA(jshort, Short, T_SHORT
1875 , HOTSPOT_JNI_CALLSHORTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1876 HOTSPOT_JNI_CALLSHORTMETHOD_RETURN(_ret_ref))
1877
1878 DEFINE_CALLMETHODA(jobject, Object, T_OBJECT
1879 , HOTSPOT_JNI_CALLOBJECTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1880 HOTSPOT_JNI_CALLOBJECTMETHOD_RETURN(_ret_ref))
1881 DEFINE_CALLMETHODA(jint, Int, T_INT,
1882 HOTSPOT_JNI_CALLINTMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1883 HOTSPOT_JNI_CALLINTMETHOD_RETURN(_ret_ref))
1884 DEFINE_CALLMETHODA(jlong, Long, T_LONG
1885 , HOTSPOT_JNI_CALLLONGMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1886 HOTSPOT_JNI_CALLLONGMETHOD_RETURN(_ret_ref))
1887 // Float and double probes don't return value because dtrace doesn't currently support it
1888 DEFINE_CALLMETHODA(jfloat, Float, T_FLOAT
1889 , HOTSPOT_JNI_CALLFLOATMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1890 HOTSPOT_JNI_CALLFLOATMETHOD_RETURN())
1891 DEFINE_CALLMETHODA(jdouble, Double, T_DOUBLE
1892 , HOTSPOT_JNI_CALLDOUBLEMETHOD_ENTRY(env, obj, (uintptr_t)methodID),
1893 HOTSPOT_JNI_CALLDOUBLEMETHOD_RETURN())
1894
1895 DT_VOID_RETURN_MARK_DECL(CallVoidMethod, HOTSPOT_JNI_CALLVOIDMETHOD_RETURN());
1896 DT_VOID_RETURN_MARK_DECL(CallVoidMethodV, HOTSPOT_JNI_CALLVOIDMETHODV_RETURN());
1897 DT_VOID_RETURN_MARK_DECL(CallVoidMethodA, HOTSPOT_JNI_CALLVOIDMETHODA_RETURN());
1898
1899 #endif /* USDT2 */
1900
1901 JNI_ENTRY(void, jni_CallVoidMethod(JNIEnv *env, jobject obj, jmethodID methodID, ...))
1902 JNIWrapper("CallVoidMethod");
1903 #ifndef USDT2
1904 DTRACE_PROBE3(hotspot_jni, CallVoidMethod__entry, env, obj, methodID);
1905 #else /* USDT2 */
1906 HOTSPOT_JNI_CALLVOIDMETHOD_ENTRY(
1907 env, obj, (uintptr_t) methodID);
1908 #endif /* USDT2 */
1909 DT_VOID_RETURN_MARK(CallVoidMethod);
1910
1911 va_list args;
1912 va_start(args, methodID);
1913 JavaValue jvalue(T_VOID);
1914 JNI_ArgumentPusherVaArg ap(methodID, args);
1915 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1916 va_end(args);
1917 JNI_END
1918
1919
1920 JNI_ENTRY(void, jni_CallVoidMethodV(JNIEnv *env, jobject obj, jmethodID methodID, va_list args))
1921 JNIWrapper("CallVoidMethodV");
1922 #ifndef USDT2
1923 DTRACE_PROBE3(hotspot_jni, CallVoidMethodV__entry, env, obj, methodID);
1924 #else /* USDT2 */
1925 HOTSPOT_JNI_CALLVOIDMETHODV_ENTRY(
1926 env, obj, (uintptr_t) methodID);
1927 #endif /* USDT2 */
1928 DT_VOID_RETURN_MARK(CallVoidMethodV);
1929
1930 JavaValue jvalue(T_VOID);
1931 JNI_ArgumentPusherVaArg ap(methodID, args);
1932 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1933 JNI_END
1934
1935
1936 JNI_ENTRY(void, jni_CallVoidMethodA(JNIEnv *env, jobject obj, jmethodID methodID, const jvalue *args))
1937 JNIWrapper("CallVoidMethodA");
1938 #ifndef USDT2
1939 DTRACE_PROBE3(hotspot_jni, CallVoidMethodA__entry, env, obj, methodID);
1940 #else /* USDT2 */
1941 HOTSPOT_JNI_CALLVOIDMETHODA_ENTRY(
1942 env, obj, (uintptr_t) methodID);
1943 #endif /* USDT2 */
1944 DT_VOID_RETURN_MARK(CallVoidMethodA);
1945
1946 JavaValue jvalue(T_VOID);
1947 JNI_ArgumentPusherArray ap(methodID, args);
1948 jni_invoke_nonstatic(env, &jvalue, obj, JNI_VIRTUAL, methodID, &ap, CHECK);
1949 JNI_END
1950
1951
1952 #ifndef USDT2
1953 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag) \
1954 \
1955 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType);\
1956 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType);\
1957 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType);\
1958 \
1959 JNI_ENTRY(ResultType, \
1960 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
1961 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
1962 \
1963 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##Method__entry, env, obj, cls, methodID);\
1964 ResultType ret;\
1965 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
1966 (const ResultType&)ret);\
1967 \
1968 va_list args; \
1969 va_start(args, methodID); \
1970 JavaValue jvalue(Tag); \
1971 JNI_ArgumentPusherVaArg ap(methodID, args); \
1972 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1973 va_end(args); \
1974 ret = jvalue.get_##ResultType(); \
1975 return ret;\
1976 JNI_END \
1977 \
1978 JNI_ENTRY(ResultType, \
1979 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
1980 JNIWrapper("CallNonvitual" XSTR(Result) "#MethodV"); \
1981 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodV__entry, env, obj, cls, methodID);\
1982 ResultType ret;\
1983 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
1984 (const ResultType&)ret);\
1985 \
1986 JavaValue jvalue(Tag); \
1987 JNI_ArgumentPusherVaArg ap(methodID, args); \
1988 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
1989 ret = jvalue.get_##ResultType(); \
1990 return ret;\
1991 JNI_END \
1992 \
1993 JNI_ENTRY(ResultType, \
1994 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
1995 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
1996 DTRACE_PROBE4(hotspot_jni, CallNonvirtual##Result##MethodA__entry, env, obj, cls, methodID);\
1997 ResultType ret;\
1998 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
1999 (const ResultType&)ret);\
2000 \
2001 JavaValue jvalue(Tag); \
2002 JNI_ArgumentPusherArray ap(methodID, args); \
2003 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2004 ret = jvalue.get_##ResultType(); \
2005 return ret;\
2006 JNI_END
2007
2008 // the runtime type of subword integral basic types is integer
2009 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN)
2010 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE)
2011 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR)
2012 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT)
2013
2014 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT)
2015 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT)
2016 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG)
2017 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT)
2018 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE)
2019
2020
2021 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod);
2022 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV);
2023 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA);
2024
2025 #else /* USDT2 */
2026
2027 #define DEFINE_CALLNONVIRTUALMETHOD(ResultType, Result, Tag \
2028 , EntryProbe, ReturnProbe) \
2029 \
2030 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##Method, ResultType \
2031 , ReturnProbe);\
2032 \
2033 JNI_ENTRY(ResultType, \
2034 jni_CallNonvirtual##Result##Method(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...)) \
2035 JNIWrapper("CallNonvitual" XSTR(Result) "Method"); \
2036 \
2037 EntryProbe;\
2038 ResultType ret;\
2039 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##Method, ResultType, \
2040 (const ResultType&)ret);\
2041 \
2042 va_list args; \
2043 va_start(args, methodID); \
2044 JavaValue jvalue(Tag); \
2045 JNI_ArgumentPusherVaArg ap(methodID, args); \
2046 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2047 va_end(args); \
2048 ret = jvalue.get_##ResultType(); \
2049 return ret;\
2050 JNI_END
2051
2052 // the runtime type of subword integral basic types is integer
2053 DEFINE_CALLNONVIRTUALMETHOD(jboolean, Boolean, T_BOOLEAN
2054 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2055 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHOD_RETURN(_ret_ref))
2056 DEFINE_CALLNONVIRTUALMETHOD(jbyte, Byte, T_BYTE
2057 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2058 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHOD_RETURN(_ret_ref))
2059 DEFINE_CALLNONVIRTUALMETHOD(jchar, Char, T_CHAR
2060 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2061 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHOD_RETURN(_ret_ref))
2062 DEFINE_CALLNONVIRTUALMETHOD(jshort, Short, T_SHORT
2063 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2064 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHOD_RETURN(_ret_ref))
2065
2066 DEFINE_CALLNONVIRTUALMETHOD(jobject, Object, T_OBJECT
2067 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2068 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHOD_RETURN(_ret_ref))
2069 DEFINE_CALLNONVIRTUALMETHOD(jint, Int, T_INT
2070 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2071 HOTSPOT_JNI_CALLNONVIRTUALINTMETHOD_RETURN(_ret_ref))
2072 DEFINE_CALLNONVIRTUALMETHOD(jlong, Long, T_LONG
2073 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2074 // Float and double probes don't return value because dtrace doesn't currently support it
2075 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHOD_RETURN(_ret_ref))
2076 DEFINE_CALLNONVIRTUALMETHOD(jfloat, Float, T_FLOAT
2077 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2078 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHOD_RETURN())
2079 DEFINE_CALLNONVIRTUALMETHOD(jdouble, Double, T_DOUBLE
2080 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_ENTRY(env, obj, cls, (uintptr_t)methodID),
2081 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHOD_RETURN())
2082
2083 #define DEFINE_CALLNONVIRTUALMETHODV(ResultType, Result, Tag \
2084 , EntryProbe, ReturnProbe) \
2085 \
2086 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodV, ResultType \
2087 , ReturnProbe);\
2088 \
2089 JNI_ENTRY(ResultType, \
2090 jni_CallNonvirtual##Result##MethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args)) \
2091 JNIWrapper("CallNonvitual" XSTR(Result) "MethodV"); \
2092 \
2093 EntryProbe;\
2094 ResultType ret;\
2095 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodV, ResultType, \
2096 (const ResultType&)ret);\
2097 \
2098 JavaValue jvalue(Tag); \
2099 JNI_ArgumentPusherVaArg ap(methodID, args); \
2100 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2101 ret = jvalue.get_##ResultType(); \
2102 return ret;\
2103 JNI_END
2104
2105 // the runtime type of subword integral basic types is integer
2106 DEFINE_CALLNONVIRTUALMETHODV(jboolean, Boolean, T_BOOLEAN
2107 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2108 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODV_RETURN(_ret_ref))
2109 DEFINE_CALLNONVIRTUALMETHODV(jbyte, Byte, T_BYTE
2110 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2111 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODV_RETURN(_ret_ref))
2112 DEFINE_CALLNONVIRTUALMETHODV(jchar, Char, T_CHAR
2113 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2114 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODV_RETURN(_ret_ref))
2115 DEFINE_CALLNONVIRTUALMETHODV(jshort, Short, T_SHORT
2116 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2117 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODV_RETURN(_ret_ref))
2118
2119 DEFINE_CALLNONVIRTUALMETHODV(jobject, Object, T_OBJECT
2120 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2121 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODV_RETURN(_ret_ref))
2122 DEFINE_CALLNONVIRTUALMETHODV(jint, Int, T_INT
2123 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2124 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODV_RETURN(_ret_ref))
2125 DEFINE_CALLNONVIRTUALMETHODV(jlong, Long, T_LONG
2126 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2127 // Float and double probes don't return value because dtrace doesn't currently support it
2128 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODV_RETURN(_ret_ref))
2129 DEFINE_CALLNONVIRTUALMETHODV(jfloat, Float, T_FLOAT
2130 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2131 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODV_RETURN())
2132 DEFINE_CALLNONVIRTUALMETHODV(jdouble, Double, T_DOUBLE
2133 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_ENTRY(env, obj, cls, (uintptr_t)methodID),
2134 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODV_RETURN())
2135
2136 #define DEFINE_CALLNONVIRTUALMETHODA(ResultType, Result, Tag \
2137 , EntryProbe, ReturnProbe) \
2138 \
2139 DT_RETURN_MARK_DECL_FOR(Result, CallNonvirtual##Result##MethodA, ResultType \
2140 , ReturnProbe);\
2141 \
2142 JNI_ENTRY(ResultType, \
2143 jni_CallNonvirtual##Result##MethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args)) \
2144 JNIWrapper("CallNonvitual" XSTR(Result) "MethodA"); \
2145 \
2146 EntryProbe;\
2147 ResultType ret;\
2148 DT_RETURN_MARK_FOR(Result, CallNonvirtual##Result##MethodA, ResultType, \
2149 (const ResultType&)ret);\
2150 \
2151 JavaValue jvalue(Tag); \
2152 JNI_ArgumentPusherArray ap(methodID, args); \
2153 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK_0); \
2154 ret = jvalue.get_##ResultType(); \
2155 return ret;\
2156 JNI_END
2157
2158 // the runtime type of subword integral basic types is integer
2159 DEFINE_CALLNONVIRTUALMETHODA(jboolean, Boolean, T_BOOLEAN
2160 , HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2161 HOTSPOT_JNI_CALLNONVIRTUALBOOLEANMETHODA_RETURN(_ret_ref))
2162 DEFINE_CALLNONVIRTUALMETHODA(jbyte, Byte, T_BYTE
2163 , HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2164 HOTSPOT_JNI_CALLNONVIRTUALBYTEMETHODA_RETURN(_ret_ref))
2165 DEFINE_CALLNONVIRTUALMETHODA(jchar, Char, T_CHAR
2166 , HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2167 HOTSPOT_JNI_CALLNONVIRTUALCHARMETHODA_RETURN(_ret_ref))
2168 DEFINE_CALLNONVIRTUALMETHODA(jshort, Short, T_SHORT
2169 , HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2170 HOTSPOT_JNI_CALLNONVIRTUALSHORTMETHODA_RETURN(_ret_ref))
2171
2172 DEFINE_CALLNONVIRTUALMETHODA(jobject, Object, T_OBJECT
2173 , HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2174 HOTSPOT_JNI_CALLNONVIRTUALOBJECTMETHODA_RETURN(_ret_ref))
2175 DEFINE_CALLNONVIRTUALMETHODA(jint, Int, T_INT
2176 , HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2177 HOTSPOT_JNI_CALLNONVIRTUALINTMETHODA_RETURN(_ret_ref))
2178 DEFINE_CALLNONVIRTUALMETHODA(jlong, Long, T_LONG
2179 , HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2180 // Float and double probes don't return value because dtrace doesn't currently support it
2181 HOTSPOT_JNI_CALLNONVIRTUALLONGMETHODA_RETURN(_ret_ref))
2182 DEFINE_CALLNONVIRTUALMETHODA(jfloat, Float, T_FLOAT
2183 , HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2184 HOTSPOT_JNI_CALLNONVIRTUALFLOATMETHODA_RETURN())
2185 DEFINE_CALLNONVIRTUALMETHODA(jdouble, Double, T_DOUBLE
2186 , HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_ENTRY(env, obj, cls, (uintptr_t)methodID),
2187 HOTSPOT_JNI_CALLNONVIRTUALDOUBLEMETHODA_RETURN())
2188
2189 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethod
2190 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_RETURN());
2191 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodV
2192 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_RETURN());
2193 DT_VOID_RETURN_MARK_DECL(CallNonvirtualVoidMethodA
2194 , HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_RETURN());
2195 #endif /* USDT2 */
2196
2197 JNI_ENTRY(void, jni_CallNonvirtualVoidMethod(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, ...))
2198 JNIWrapper("CallNonvirtualVoidMethod");
2199
2200 #ifndef USDT2
2201 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethod__entry,
2202 env, obj, cls, methodID);
2203 #else /* USDT2 */
2204 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHOD_ENTRY(
2205 env, obj, cls, (uintptr_t) methodID);
2206 #endif /* USDT2 */
2207 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethod);
2208
2209 va_list args;
2210 va_start(args, methodID);
2211 JavaValue jvalue(T_VOID);
2212 JNI_ArgumentPusherVaArg ap(methodID, args);
2213 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2214 va_end(args);
2215 JNI_END
2216
2217
2218 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodV(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, va_list args))
2219 JNIWrapper("CallNonvirtualVoidMethodV");
2220
2221 #ifndef USDT2
2222 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodV__entry,
2223 env, obj, cls, methodID);
2224 #else /* USDT2 */
2225 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODV_ENTRY(
2226 env, obj, cls, (uintptr_t) methodID);
2227 #endif /* USDT2 */
2228 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodV);
2229
2230 JavaValue jvalue(T_VOID);
2231 JNI_ArgumentPusherVaArg ap(methodID, args);
2232 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2233 JNI_END
2234
2235
2236 JNI_ENTRY(void, jni_CallNonvirtualVoidMethodA(JNIEnv *env, jobject obj, jclass cls, jmethodID methodID, const jvalue *args))
2237 JNIWrapper("CallNonvirtualVoidMethodA");
2238 #ifndef USDT2
2239 DTRACE_PROBE4(hotspot_jni, CallNonvirtualVoidMethodA__entry,
2240 env, obj, cls, methodID);
2241 #else /* USDT2 */
2242 HOTSPOT_JNI_CALLNONVIRTUALVOIDMETHODA_ENTRY(
2243 env, obj, cls, (uintptr_t) methodID);
2244 #endif /* USDT2 */
2245 DT_VOID_RETURN_MARK(CallNonvirtualVoidMethodA);
2246 JavaValue jvalue(T_VOID);
2247 JNI_ArgumentPusherArray ap(methodID, args);
2248 jni_invoke_nonstatic(env, &jvalue, obj, JNI_NONVIRTUAL, methodID, &ap, CHECK);
2249 JNI_END
2250
2251
2252 #ifndef USDT2
2253 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag) \
2254 \
2255 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType);\
2256 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType);\
2257 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType);\
2258 \
2259 JNI_ENTRY(ResultType, \
2260 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2261 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2262 \
2263 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##Method__entry, env, cls, methodID);\
2264 ResultType ret = 0;\
2265 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2266 (const ResultType&)ret);\
2267 \
2268 va_list args; \
2269 va_start(args, methodID); \
2270 JavaValue jvalue(Tag); \
2271 JNI_ArgumentPusherVaArg ap(methodID, args); \
2272 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2273 va_end(args); \
2274 ret = jvalue.get_##ResultType(); \
2275 return ret;\
2276 JNI_END \
2277 \
2278 JNI_ENTRY(ResultType, \
2279 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2280 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2281 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodV__entry, env, cls, methodID);\
2282 ResultType ret = 0;\
2283 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2284 (const ResultType&)ret);\
2285 \
2286 JavaValue jvalue(Tag); \
2287 JNI_ArgumentPusherVaArg ap(methodID, args); \
2288 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2289 ret = jvalue.get_##ResultType(); \
2290 return ret;\
2291 JNI_END \
2292 \
2293 JNI_ENTRY(ResultType, \
2294 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2295 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2296 DTRACE_PROBE3(hotspot_jni, CallStatic##Result##MethodA__entry, env, cls, methodID);\
2297 ResultType ret = 0;\
2298 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2299 (const ResultType&)ret);\
2300 \
2301 JavaValue jvalue(Tag); \
2302 JNI_ArgumentPusherArray ap(methodID, args); \
2303 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2304 ret = jvalue.get_##ResultType(); \
2305 return ret;\
2306 JNI_END
2307
2308 // the runtime type of subword integral basic types is integer
2309 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN)
2310 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE)
2311 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR)
2312 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT)
2313
2314 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT)
2315 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT)
2316 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG)
2317 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT)
2318 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE)
2319
2320
2321 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod);
2322 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV);
2323 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA);
2324
2325 #else /* USDT2 */
2326
2327 #define DEFINE_CALLSTATICMETHOD(ResultType, Result, Tag \
2328 , EntryProbe, ResultProbe) \
2329 \
2330 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##Method, ResultType \
2331 , ResultProbe); \
2332 \
2333 JNI_ENTRY(ResultType, \
2334 jni_CallStatic##Result##Method(JNIEnv *env, jclass cls, jmethodID methodID, ...)) \
2335 JNIWrapper("CallStatic" XSTR(Result) "Method"); \
2336 \
2337 EntryProbe; \
2338 ResultType ret = 0;\
2339 DT_RETURN_MARK_FOR(Result, CallStatic##Result##Method, ResultType, \
2340 (const ResultType&)ret);\
2341 \
2342 va_list args; \
2343 va_start(args, methodID); \
2344 JavaValue jvalue(Tag); \
2345 JNI_ArgumentPusherVaArg ap(methodID, args); \
2346 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2347 va_end(args); \
2348 ret = jvalue.get_##ResultType(); \
2349 return ret;\
2350 JNI_END
2351
2352 // the runtime type of subword integral basic types is integer
2353 DEFINE_CALLSTATICMETHOD(jboolean, Boolean, T_BOOLEAN
2354 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2355 HOTSPOT_JNI_CALLSTATICBOOLEANMETHOD_RETURN(_ret_ref));
2356 DEFINE_CALLSTATICMETHOD(jbyte, Byte, T_BYTE
2357 , HOTSPOT_JNI_CALLSTATICBYTEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2358 HOTSPOT_JNI_CALLSTATICBYTEMETHOD_RETURN(_ret_ref));
2359 DEFINE_CALLSTATICMETHOD(jchar, Char, T_CHAR
2360 , HOTSPOT_JNI_CALLSTATICCHARMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2361 HOTSPOT_JNI_CALLSTATICCHARMETHOD_RETURN(_ret_ref));
2362 DEFINE_CALLSTATICMETHOD(jshort, Short, T_SHORT
2363 , HOTSPOT_JNI_CALLSTATICSHORTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2364 HOTSPOT_JNI_CALLSTATICSHORTMETHOD_RETURN(_ret_ref));
2365
2366 DEFINE_CALLSTATICMETHOD(jobject, Object, T_OBJECT
2367 , HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2368 HOTSPOT_JNI_CALLSTATICOBJECTMETHOD_RETURN(_ret_ref));
2369 DEFINE_CALLSTATICMETHOD(jint, Int, T_INT
2370 , HOTSPOT_JNI_CALLSTATICINTMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2371 HOTSPOT_JNI_CALLSTATICINTMETHOD_RETURN(_ret_ref));
2372 DEFINE_CALLSTATICMETHOD(jlong, Long, T_LONG
2373 , HOTSPOT_JNI_CALLSTATICLONGMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2374 HOTSPOT_JNI_CALLSTATICLONGMETHOD_RETURN(_ret_ref));
2375 // Float and double probes don't return value because dtrace doesn't currently support it
2376 DEFINE_CALLSTATICMETHOD(jfloat, Float, T_FLOAT
2377 , HOTSPOT_JNI_CALLSTATICFLOATMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2378 HOTSPOT_JNI_CALLSTATICFLOATMETHOD_RETURN());
2379 DEFINE_CALLSTATICMETHOD(jdouble, Double, T_DOUBLE
2380 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_ENTRY(env, cls, (uintptr_t)methodID),
2381 HOTSPOT_JNI_CALLSTATICDOUBLEMETHOD_RETURN());
2382
2383 #define DEFINE_CALLSTATICMETHODV(ResultType, Result, Tag \
2384 , EntryProbe, ResultProbe) \
2385 \
2386 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodV, ResultType \
2387 , ResultProbe); \
2388 \
2389 JNI_ENTRY(ResultType, \
2390 jni_CallStatic##Result##MethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args)) \
2391 JNIWrapper("CallStatic" XSTR(Result) "MethodV"); \
2392 \
2393 EntryProbe; \
2394 ResultType ret = 0;\
2395 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodV, ResultType, \
2396 (const ResultType&)ret);\
2397 \
2398 JavaValue jvalue(Tag); \
2399 JNI_ArgumentPusherVaArg ap(methodID, args); \
2400 /* Make sure class is initialized before trying to invoke its method */ \
2401 KlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls))); \
2402 k()->initialize(CHECK_0); \
2403 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2404 va_end(args); \
2405 ret = jvalue.get_##ResultType(); \
2406 return ret;\
2407 JNI_END
2408
2409 // the runtime type of subword integral basic types is integer
2410 DEFINE_CALLSTATICMETHODV(jboolean, Boolean, T_BOOLEAN
2411 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2412 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODV_RETURN(_ret_ref));
2413 DEFINE_CALLSTATICMETHODV(jbyte, Byte, T_BYTE
2414 , HOTSPOT_JNI_CALLSTATICBYTEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2415 HOTSPOT_JNI_CALLSTATICBYTEMETHODV_RETURN(_ret_ref));
2416 DEFINE_CALLSTATICMETHODV(jchar, Char, T_CHAR
2417 , HOTSPOT_JNI_CALLSTATICCHARMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2418 HOTSPOT_JNI_CALLSTATICCHARMETHODV_RETURN(_ret_ref));
2419 DEFINE_CALLSTATICMETHODV(jshort, Short, T_SHORT
2420 , HOTSPOT_JNI_CALLSTATICSHORTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2421 HOTSPOT_JNI_CALLSTATICSHORTMETHODV_RETURN(_ret_ref));
2422
2423 DEFINE_CALLSTATICMETHODV(jobject, Object, T_OBJECT
2424 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2425 HOTSPOT_JNI_CALLSTATICOBJECTMETHODV_RETURN(_ret_ref));
2426 DEFINE_CALLSTATICMETHODV(jint, Int, T_INT
2427 , HOTSPOT_JNI_CALLSTATICINTMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2428 HOTSPOT_JNI_CALLSTATICINTMETHODV_RETURN(_ret_ref));
2429 DEFINE_CALLSTATICMETHODV(jlong, Long, T_LONG
2430 , HOTSPOT_JNI_CALLSTATICLONGMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2431 HOTSPOT_JNI_CALLSTATICLONGMETHODV_RETURN(_ret_ref));
2432 // Float and double probes don't return value because dtrace doesn't currently support it
2433 DEFINE_CALLSTATICMETHODV(jfloat, Float, T_FLOAT
2434 , HOTSPOT_JNI_CALLSTATICFLOATMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2435 HOTSPOT_JNI_CALLSTATICFLOATMETHODV_RETURN());
2436 DEFINE_CALLSTATICMETHODV(jdouble, Double, T_DOUBLE
2437 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_ENTRY(env, cls, (uintptr_t)methodID),
2438 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODV_RETURN());
2439
2440 #define DEFINE_CALLSTATICMETHODA(ResultType, Result, Tag \
2441 , EntryProbe, ResultProbe) \
2442 \
2443 DT_RETURN_MARK_DECL_FOR(Result, CallStatic##Result##MethodA, ResultType \
2444 , ResultProbe); \
2445 \
2446 JNI_ENTRY(ResultType, \
2447 jni_CallStatic##Result##MethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args)) \
2448 JNIWrapper("CallStatic" XSTR(Result) "MethodA"); \
2449 \
2450 EntryProbe; \
2451 ResultType ret = 0;\
2452 DT_RETURN_MARK_FOR(Result, CallStatic##Result##MethodA, ResultType, \
2453 (const ResultType&)ret);\
2454 \
2455 JavaValue jvalue(Tag); \
2456 JNI_ArgumentPusherArray ap(methodID, args); \
2457 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK_0); \
2458 ret = jvalue.get_##ResultType(); \
2459 return ret;\
2460 JNI_END
2461
2462 // the runtime type of subword integral basic types is integer
2463 DEFINE_CALLSTATICMETHODA(jboolean, Boolean, T_BOOLEAN
2464 , HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2465 HOTSPOT_JNI_CALLSTATICBOOLEANMETHODA_RETURN(_ret_ref));
2466 DEFINE_CALLSTATICMETHODA(jbyte, Byte, T_BYTE
2467 , HOTSPOT_JNI_CALLSTATICBYTEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2468 HOTSPOT_JNI_CALLSTATICBYTEMETHODA_RETURN(_ret_ref));
2469 DEFINE_CALLSTATICMETHODA(jchar, Char, T_CHAR
2470 , HOTSPOT_JNI_CALLSTATICCHARMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2471 HOTSPOT_JNI_CALLSTATICCHARMETHODA_RETURN(_ret_ref));
2472 DEFINE_CALLSTATICMETHODA(jshort, Short, T_SHORT
2473 , HOTSPOT_JNI_CALLSTATICSHORTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2474 HOTSPOT_JNI_CALLSTATICSHORTMETHODA_RETURN(_ret_ref));
2475
2476 DEFINE_CALLSTATICMETHODA(jobject, Object, T_OBJECT
2477 , HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2478 HOTSPOT_JNI_CALLSTATICOBJECTMETHODA_RETURN(_ret_ref));
2479 DEFINE_CALLSTATICMETHODA(jint, Int, T_INT
2480 , HOTSPOT_JNI_CALLSTATICINTMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2481 HOTSPOT_JNI_CALLSTATICINTMETHODA_RETURN(_ret_ref));
2482 DEFINE_CALLSTATICMETHODA(jlong, Long, T_LONG
2483 , HOTSPOT_JNI_CALLSTATICLONGMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2484 HOTSPOT_JNI_CALLSTATICLONGMETHODA_RETURN(_ret_ref));
2485 // Float and double probes don't return value because dtrace doesn't currently support it
2486 DEFINE_CALLSTATICMETHODA(jfloat, Float, T_FLOAT
2487 , HOTSPOT_JNI_CALLSTATICFLOATMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2488 HOTSPOT_JNI_CALLSTATICFLOATMETHODA_RETURN());
2489 DEFINE_CALLSTATICMETHODA(jdouble, Double, T_DOUBLE
2490 , HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_ENTRY(env, cls, (uintptr_t)methodID),
2491 HOTSPOT_JNI_CALLSTATICDOUBLEMETHODA_RETURN());
2492
2493 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethod
2494 , HOTSPOT_JNI_CALLSTATICVOIDMETHOD_RETURN());
2495 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodV
2496 , HOTSPOT_JNI_CALLSTATICVOIDMETHODV_RETURN());
2497 DT_VOID_RETURN_MARK_DECL(CallStaticVoidMethodA
2498 , HOTSPOT_JNI_CALLSTATICVOIDMETHODA_RETURN());
2499 #endif /* USDT2 */
2500
2501 JNI_ENTRY(void, jni_CallStaticVoidMethod(JNIEnv *env, jclass cls, jmethodID methodID, ...))
2502 JNIWrapper("CallStaticVoidMethod");
2503 #ifndef USDT2
2504 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethod__entry, env, cls, methodID);
2505 #else /* USDT2 */
2506 HOTSPOT_JNI_CALLSTATICVOIDMETHOD_ENTRY(
2507 env, cls, (uintptr_t) methodID);
2508 #endif /* USDT2 */
2509 DT_VOID_RETURN_MARK(CallStaticVoidMethod);
2510
2511 va_list args;
2512 va_start(args, methodID);
2513 JavaValue jvalue(T_VOID);
2514 JNI_ArgumentPusherVaArg ap(methodID, args);
2515 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2516 va_end(args);
2517 JNI_END
2518
2519
2520 JNI_ENTRY(void, jni_CallStaticVoidMethodV(JNIEnv *env, jclass cls, jmethodID methodID, va_list args))
2521 JNIWrapper("CallStaticVoidMethodV");
2522 #ifndef USDT2
2523 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodV__entry, env, cls, methodID);
2524 #else /* USDT2 */
2525 HOTSPOT_JNI_CALLSTATICVOIDMETHODV_ENTRY(
2526 env, cls, (uintptr_t) methodID);
2527 #endif /* USDT2 */
2528 DT_VOID_RETURN_MARK(CallStaticVoidMethodV);
2529
2530 JavaValue jvalue(T_VOID);
2531 JNI_ArgumentPusherVaArg ap(methodID, args);
2532 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2533 JNI_END
2534
2535
2536 JNI_ENTRY(void, jni_CallStaticVoidMethodA(JNIEnv *env, jclass cls, jmethodID methodID, const jvalue *args))
2537 JNIWrapper("CallStaticVoidMethodA");
2538 #ifndef USDT2
2539 DTRACE_PROBE3(hotspot_jni, CallStaticVoidMethodA__entry, env, cls, methodID);
2540 #else /* USDT2 */
2541 HOTSPOT_JNI_CALLSTATICVOIDMETHODA_ENTRY(
2542 env, cls, (uintptr_t) methodID);
2543 #endif /* USDT2 */
2544 DT_VOID_RETURN_MARK(CallStaticVoidMethodA);
2545
2546 JavaValue jvalue(T_VOID);
2547 JNI_ArgumentPusherArray ap(methodID, args);
2548 jni_invoke_static(env, &jvalue, NULL, JNI_STATIC, methodID, &ap, CHECK);
2549 JNI_END
2550
2551
2552 //
2553 // Accessing Fields
2554 //
2555
2556
2557 #ifndef USDT2
2558 DT_RETURN_MARK_DECL(GetFieldID, jfieldID);
2559 #else /* USDT2 */
2560 DT_RETURN_MARK_DECL(GetFieldID, jfieldID
2561 , HOTSPOT_JNI_GETFIELDID_RETURN((uintptr_t)_ret_ref));
2562 #endif /* USDT2 */
2563
2564 JNI_ENTRY(jfieldID, jni_GetFieldID(JNIEnv *env, jclass clazz,
2565 const char *name, const char *sig))
2566 JNIWrapper("GetFieldID");
2567 #ifndef USDT2
2568 DTRACE_PROBE4(hotspot_jni, GetFieldID__entry, env, clazz, name, sig);
2569 #else /* USDT2 */
2570 HOTSPOT_JNI_GETFIELDID_ENTRY(
2571 env, clazz, (char *) name, (char *) sig);
2572 #endif /* USDT2 */
2573 jfieldID ret = 0;
2574 DT_RETURN_MARK(GetFieldID, jfieldID, (const jfieldID&)ret);
2575
2576 // The class should have been loaded (we have an instance of the class
2577 // passed in) so the field and signature should already be in the symbol
2578 // table. If they're not there, the field doesn't exist.
2579 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2580 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2581 if (fieldname == NULL || signame == NULL) {
2582 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2583 }
2584 KlassHandle k(THREAD,
2585 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2586 // Make sure class is initialized before handing id's out to fields
2587 k()->initialize(CHECK_NULL);
2588
2589 fieldDescriptor fd;
2590 if (!k()->oop_is_instance() ||
2591 !InstanceKlass::cast(k())->find_field(fieldname, signame, false, &fd)) {
2592 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2593 }
2594
2595 // A jfieldID for a non-static field is simply the offset of the field within the instanceOop
2596 // It may also have hash bits for k, if VerifyJNIFields is turned on.
2597 ret = jfieldIDWorkaround::to_instance_jfieldID(k(), fd.offset());
2598 return ret;
2599 JNI_END
2600
2601
2602 JNI_ENTRY(jobject, jni_GetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID))
2603 JNIWrapper("GetObjectField");
2604 #ifndef USDT2
2605 DTRACE_PROBE3(hotspot_jni, GetObjectField__entry, env, obj, fieldID);
2606 #else /* USDT2 */
2607 HOTSPOT_JNI_GETOBJECTFIELD_ENTRY(
2608 env, obj, (uintptr_t) fieldID);
2609 #endif /* USDT2 */
2610 oop o = JNIHandles::resolve_non_null(obj);
2611 Klass* k = o->klass();
2612 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2613 // Keep JVMTI addition small and only check enabled flag here.
2614 // jni_GetField_probe() assumes that is okay to create handles.
2615 if (JvmtiExport::should_post_field_access()) {
2616 o = JvmtiExport::jni_GetField_probe(thread, obj, o, k, fieldID, false);
2617 }
2618 jobject ret = JNIHandles::make_local(env, o->obj_field(offset));
2619 #if INCLUDE_ALL_GCS
2620 // If G1 is enabled and we are accessing the value of the referent
2621 // field in a reference object then we need to register a non-null
2622 // referent with the SATB barrier.
2623 if (UseG1GC) {
2624 bool needs_barrier = false;
2625
2626 if (ret != NULL &&
2627 offset == java_lang_ref_Reference::referent_offset &&
2628 InstanceKlass::cast(k)->reference_type() != REF_NONE) {
2629 assert(InstanceKlass::cast(k)->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
2630 needs_barrier = true;
2631 }
2632
2633 if (needs_barrier) {
2634 oop referent = JNIHandles::resolve(ret);
2635 G1SATBCardTableModRefBS::enqueue(referent);
2636 }
2637 }
2638 #endif // INCLUDE_ALL_GCS
2639 #ifndef USDT2
2640 DTRACE_PROBE1(hotspot_jni, GetObjectField__return, ret);
2641 #else /* USDT2 */
2642 HOTSPOT_JNI_GETOBJECTFIELD_RETURN(
2643 ret);
2644 #endif /* USDT2 */
2645 return ret;
2646 JNI_END
2647
2648
2649 #ifndef USDT2
2650 #define DEFINE_GETFIELD(Return,Fieldname,Result) \
2651 \
2652 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return);\
2653 \
2654 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2655 JNIWrapper("Get" XSTR(Result) "Field"); \
2656 \
2657 DTRACE_PROBE3(hotspot_jni, Get##Result##Field__entry, env, obj, fieldID);\
2658 Return ret = 0;\
2659 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2660 \
2661 oop o = JNIHandles::resolve_non_null(obj); \
2662 Klass* k = o->klass(); \
2663 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2664 /* Keep JVMTI addition small and only check enabled flag here. */ \
2665 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2666 /* and creates a ResetNoHandleMark. */ \
2667 if (JvmtiExport::should_post_field_access()) { \
2668 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2669 } \
2670 ret = o->Fieldname##_field(offset); \
2671 return ret; \
2672 JNI_END
2673
2674 DEFINE_GETFIELD(jboolean, bool, Boolean)
2675 DEFINE_GETFIELD(jbyte, byte, Byte)
2676 DEFINE_GETFIELD(jchar, char, Char)
2677 DEFINE_GETFIELD(jshort, short, Short)
2678 DEFINE_GETFIELD(jint, int, Int)
2679 DEFINE_GETFIELD(jlong, long, Long)
2680 DEFINE_GETFIELD(jfloat, float, Float)
2681 DEFINE_GETFIELD(jdouble, double, Double)
2682
2683 #else /* USDT2 */
2684
2685 #define DEFINE_GETFIELD(Return,Fieldname,Result \
2686 , EntryProbe, ReturnProbe) \
2687 \
2688 DT_RETURN_MARK_DECL_FOR(Result, Get##Result##Field, Return \
2689 , ReturnProbe); \
2690 \
2691 JNI_QUICK_ENTRY(Return, jni_Get##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID)) \
2692 JNIWrapper("Get" XSTR(Result) "Field"); \
2693 \
2694 EntryProbe; \
2695 Return ret = 0;\
2696 DT_RETURN_MARK_FOR(Result, Get##Result##Field, Return, (const Return&)ret);\
2697 \
2698 oop o = JNIHandles::resolve_non_null(obj); \
2699 Klass* k = o->klass(); \
2700 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2701 /* Keep JVMTI addition small and only check enabled flag here. */ \
2702 /* jni_GetField_probe_nh() assumes that is not okay to create handles */ \
2703 /* and creates a ResetNoHandleMark. */ \
2704 if (JvmtiExport::should_post_field_access()) { \
2705 o = JvmtiExport::jni_GetField_probe_nh(thread, obj, o, k, fieldID, false); \
2706 } \
2707 ret = o->Fieldname##_field(offset); \
2708 return ret; \
2709 JNI_END
2710
2711 DEFINE_GETFIELD(jboolean, bool, Boolean
2712 , HOTSPOT_JNI_GETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2713 HOTSPOT_JNI_GETBOOLEANFIELD_RETURN(_ret_ref))
2714 DEFINE_GETFIELD(jbyte, byte, Byte
2715 , HOTSPOT_JNI_GETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2716 HOTSPOT_JNI_GETBYTEFIELD_RETURN(_ret_ref))
2717 DEFINE_GETFIELD(jchar, char, Char
2718 , HOTSPOT_JNI_GETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2719 HOTSPOT_JNI_GETCHARFIELD_RETURN(_ret_ref))
2720 DEFINE_GETFIELD(jshort, short, Short
2721 , HOTSPOT_JNI_GETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2722 HOTSPOT_JNI_GETSHORTFIELD_RETURN(_ret_ref))
2723 DEFINE_GETFIELD(jint, int, Int
2724 , HOTSPOT_JNI_GETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2725 HOTSPOT_JNI_GETINTFIELD_RETURN(_ret_ref))
2726 DEFINE_GETFIELD(jlong, long, Long
2727 , HOTSPOT_JNI_GETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2728 HOTSPOT_JNI_GETLONGFIELD_RETURN(_ret_ref))
2729 // Float and double probes don't return value because dtrace doesn't currently support it
2730 DEFINE_GETFIELD(jfloat, float, Float
2731 , HOTSPOT_JNI_GETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2732 HOTSPOT_JNI_GETFLOATFIELD_RETURN())
2733 DEFINE_GETFIELD(jdouble, double, Double
2734 , HOTSPOT_JNI_GETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2735 HOTSPOT_JNI_GETDOUBLEFIELD_RETURN())
2736 #endif /* USDT2 */
2737
2738 address jni_GetBooleanField_addr() {
2739 return (address)jni_GetBooleanField;
2740 }
2741 address jni_GetByteField_addr() {
2742 return (address)jni_GetByteField;
2743 }
2744 address jni_GetCharField_addr() {
2745 return (address)jni_GetCharField;
2746 }
2747 address jni_GetShortField_addr() {
2748 return (address)jni_GetShortField;
2749 }
2750 address jni_GetIntField_addr() {
2751 return (address)jni_GetIntField;
2752 }
2753 address jni_GetLongField_addr() {
2754 return (address)jni_GetLongField;
2755 }
2756 address jni_GetFloatField_addr() {
2757 return (address)jni_GetFloatField;
2758 }
2759 address jni_GetDoubleField_addr() {
2760 return (address)jni_GetDoubleField;
2761 }
2762
2763 JNI_QUICK_ENTRY(void, jni_SetObjectField(JNIEnv *env, jobject obj, jfieldID fieldID, jobject value))
2764 JNIWrapper("SetObjectField");
2765 #ifndef USDT2
2766 DTRACE_PROBE4(hotspot_jni, SetObjectField__entry, env, obj, fieldID, value);
2767 #else /* USDT2 */
2768 HOTSPOT_JNI_SETOBJECTFIELD_ENTRY(
2769 env, obj, (uintptr_t) fieldID, value);
2770 #endif /* USDT2 */
2771 oop o = JNIHandles::resolve_non_null(obj);
2772 Klass* k = o->klass();
2773 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2774 // Keep JVMTI addition small and only check enabled flag here.
2775 // jni_SetField_probe_nh() assumes that is not okay to create handles
2776 // and creates a ResetNoHandleMark.
2777 if (JvmtiExport::should_post_field_modification()) {
2778 jvalue field_value;
2779 field_value.l = value;
2780 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
2781 }
2782 o->obj_field_put(offset, JNIHandles::resolve(value));
2783 #ifndef USDT2
2784 DTRACE_PROBE(hotspot_jni, SetObjectField__return);
2785 #else /* USDT2 */
2786 HOTSPOT_JNI_SETOBJECTFIELD_RETURN(
2787 );
2788 #endif /* USDT2 */
2789 JNI_END
2790
2791 #ifndef USDT2
2792 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType) \
2793 \
2794 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2795 JNIWrapper("Set" XSTR(Result) "Field"); \
2796 \
2797 FP_SELECT_##Result( \
2798 DTRACE_PROBE4(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID, value), \
2799 DTRACE_PROBE3(hotspot_jni, Set##Result##Field__entry, env, obj, fieldID)); \
2800 \
2801 oop o = JNIHandles::resolve_non_null(obj); \
2802 Klass* k = o->klass(); \
2803 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2804 /* Keep JVMTI addition small and only check enabled flag here. */ \
2805 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2806 /* and creates a ResetNoHandleMark. */ \
2807 if (JvmtiExport::should_post_field_modification()) { \
2808 jvalue field_value; \
2809 field_value.unionType = value; \
2810 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2811 } \
2812 o->Fieldname##_field_put(offset, value); \
2813 DTRACE_PROBE(hotspot_jni, Set##Result##Field__return);\
2814 JNI_END
2815
2816 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z)
2817 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b)
2818 DEFINE_SETFIELD(jchar, char, Char, 'C', c)
2819 DEFINE_SETFIELD(jshort, short, Short, 'S', s)
2820 DEFINE_SETFIELD(jint, int, Int, 'I', i)
2821 DEFINE_SETFIELD(jlong, long, Long, 'J', j)
2822 DEFINE_SETFIELD(jfloat, float, Float, 'F', f)
2823 DEFINE_SETFIELD(jdouble, double, Double, 'D', d)
2824
2825 #else /* USDT2 */
2826
2827 #define DEFINE_SETFIELD(Argument,Fieldname,Result,SigType,unionType \
2828 , EntryProbe, ReturnProbe) \
2829 \
2830 JNI_QUICK_ENTRY(void, jni_Set##Result##Field(JNIEnv *env, jobject obj, jfieldID fieldID, Argument value)) \
2831 JNIWrapper("Set" XSTR(Result) "Field"); \
2832 \
2833 EntryProbe; \
2834 \
2835 oop o = JNIHandles::resolve_non_null(obj); \
2836 Klass* k = o->klass(); \
2837 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID); \
2838 /* Keep JVMTI addition small and only check enabled flag here. */ \
2839 /* jni_SetField_probe_nh() assumes that is not okay to create handles */ \
2840 /* and creates a ResetNoHandleMark. */ \
2841 if (JvmtiExport::should_post_field_modification()) { \
2842 jvalue field_value; \
2843 field_value.unionType = value; \
2844 o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
2845 } \
2846 o->Fieldname##_field_put(offset, value); \
2847 ReturnProbe; \
2848 JNI_END
2849
2850 DEFINE_SETFIELD(jboolean, bool, Boolean, 'Z', z
2851 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2852 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
2853 DEFINE_SETFIELD(jbyte, byte, Byte, 'B', b
2854 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2855 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
2856 DEFINE_SETFIELD(jchar, char, Char, 'C', c
2857 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2858 HOTSPOT_JNI_SETCHARFIELD_RETURN())
2859 DEFINE_SETFIELD(jshort, short, Short, 'S', s
2860 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2861 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
2862 DEFINE_SETFIELD(jint, int, Int, 'I', i
2863 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2864 HOTSPOT_JNI_SETINTFIELD_RETURN())
2865 DEFINE_SETFIELD(jlong, long, Long, 'J', j
2866 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
2867 HOTSPOT_JNI_SETLONGFIELD_RETURN())
2868 // Float and double probes don't return value because dtrace doesn't currently support it
2869 DEFINE_SETFIELD(jfloat, float, Float, 'F', f
2870 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2871 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
2872 DEFINE_SETFIELD(jdouble, double, Double, 'D', d
2873 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
2874 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
2875 #endif /* USDT2 */
2876
2877 #ifndef USDT2
2878 DT_RETURN_MARK_DECL(ToReflectedField, jobject);
2879 #else /* USDT2 */
2880 DT_RETURN_MARK_DECL(ToReflectedField, jobject
2881 , HOTSPOT_JNI_TOREFLECTEDFIELD_RETURN(_ret_ref));
2882 #endif /* USDT2 */
2883
2884 JNI_ENTRY(jobject, jni_ToReflectedField(JNIEnv *env, jclass cls, jfieldID fieldID, jboolean isStatic))
2885 JNIWrapper("ToReflectedField");
2886 #ifndef USDT2
2887 DTRACE_PROBE4(hotspot_jni, ToReflectedField__entry,
2888 env, cls, fieldID, isStatic);
2889 #else /* USDT2 */
2890 HOTSPOT_JNI_TOREFLECTEDFIELD_ENTRY(
2891 env, cls, (uintptr_t) fieldID, isStatic);
2892 #endif /* USDT2 */
2893 jobject ret = NULL;
2894 DT_RETURN_MARK(ToReflectedField, jobject, (const jobject&)ret);
2895
2896 fieldDescriptor fd;
2897 bool found = false;
2898 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls));
2899
2900 assert(jfieldIDWorkaround::is_static_jfieldID(fieldID) == (isStatic != 0), "invalid fieldID");
2901
2902 if (isStatic) {
2903 // Static field. The fieldID a JNIid specifying the field holder and the offset within the Klass*.
2904 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2905 assert(id->is_static_field_id(), "invalid static field id");
2906 found = id->find_local_field(&fd);
2907 } else {
2908 // Non-static field. The fieldID is really the offset of the field within the instanceOop.
2909 int offset = jfieldIDWorkaround::from_instance_jfieldID(k, fieldID);
2910 found = InstanceKlass::cast(k)->find_field_from_offset(offset, false, &fd);
2911 }
2912 assert(found, "bad fieldID passed into jni_ToReflectedField");
2913 oop reflected = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL);
2914 ret = JNIHandles::make_local(env, reflected);
2915 return ret;
2916 JNI_END
2917
2918
2919 //
2920 // Accessing Static Fields
2921 //
2922 #ifndef USDT2
2923 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID);
2924 #else /* USDT2 */
2925 DT_RETURN_MARK_DECL(GetStaticFieldID, jfieldID
2926 , HOTSPOT_JNI_GETSTATICFIELDID_RETURN((uintptr_t)_ret_ref));
2927 #endif /* USDT2 */
2928
2929 JNI_ENTRY(jfieldID, jni_GetStaticFieldID(JNIEnv *env, jclass clazz,
2930 const char *name, const char *sig))
2931 JNIWrapper("GetStaticFieldID");
2932 #ifndef USDT2
2933 DTRACE_PROBE4(hotspot_jni, GetStaticFieldID__entry, env, clazz, name, sig);
2934 #else /* USDT2 */
2935 HOTSPOT_JNI_GETSTATICFIELDID_ENTRY(
2936 env, clazz, (char *) name, (char *) sig);
2937 #endif /* USDT2 */
2938 jfieldID ret = NULL;
2939 DT_RETURN_MARK(GetStaticFieldID, jfieldID, (const jfieldID&)ret);
2940
2941 // The class should have been loaded (we have an instance of the class
2942 // passed in) so the field and signature should already be in the symbol
2943 // table. If they're not there, the field doesn't exist.
2944 TempNewSymbol fieldname = SymbolTable::probe(name, (int)strlen(name));
2945 TempNewSymbol signame = SymbolTable::probe(sig, (int)strlen(sig));
2946 if (fieldname == NULL || signame == NULL) {
2947 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2948 }
2949 KlassHandle k(THREAD,
2950 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2951 // Make sure class is initialized before handing id's out to static fields
2952 k()->initialize(CHECK_NULL);
2953
2954 fieldDescriptor fd;
2955 if (!k()->oop_is_instance() ||
2956 !InstanceKlass::cast(k())->find_field(fieldname, signame, true, &fd)) {
2957 THROW_MSG_0(vmSymbols::java_lang_NoSuchFieldError(), (char*) name);
2958 }
2959
2960 // A jfieldID for a static field is a JNIid specifying the field holder and the offset within the Klass*
2961 JNIid* id = fd.field_holder()->jni_id_for(fd.offset());
2962 debug_only(id->set_is_static_field_id();)
2963
2964 debug_only(id->verify(fd.field_holder()));
2965
2966 ret = jfieldIDWorkaround::to_static_jfieldID(id);
2967 return ret;
2968 JNI_END
2969
2970
2971 JNI_ENTRY(jobject, jni_GetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID))
2972 JNIWrapper("GetStaticObjectField");
2973 #ifndef USDT2
2974 DTRACE_PROBE3(hotspot_jni, GetStaticObjectField__entry, env, clazz, fieldID);
2975 #else /* USDT2 */
2976 HOTSPOT_JNI_GETSTATICOBJECTFIELD_ENTRY(
2977 env, clazz, (uintptr_t) fieldID);
2978 #endif /* USDT2 */
2979 #if INCLUDE_JNI_CHECK
2980 DEBUG_ONLY(Klass* param_k = jniCheck::validate_class(thread, clazz);)
2981 #endif // INCLUDE_JNI_CHECK
2982 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
2983 assert(id->is_static_field_id(), "invalid static field id");
2984 // Keep JVMTI addition small and only check enabled flag here.
2985 // jni_GetField_probe() assumes that is okay to create handles.
2986 if (JvmtiExport::should_post_field_access()) {
2987 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true);
2988 }
2989 jobject ret = JNIHandles::make_local(id->holder()->java_mirror()->obj_field(id->offset()));
2990 #ifndef USDT2
2991 DTRACE_PROBE1(hotspot_jni, GetStaticObjectField__return, ret);
2992 #else /* USDT2 */
2993 HOTSPOT_JNI_GETSTATICOBJECTFIELD_RETURN(
2994 ret);
2995 #endif /* USDT2 */
2996 return ret;
2997 JNI_END
2998
2999 #ifndef USDT2
3000 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result) \
3001 \
3002 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return);\
3003 \
3004 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3005 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3006 DTRACE_PROBE3(hotspot_jni, GetStatic##Result##Field__entry, env, clazz, fieldID);\
3007 Return ret = 0;\
3008 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3009 (const Return&)ret);\
3010 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3011 assert(id->is_static_field_id(), "invalid static field id"); \
3012 /* Keep JVMTI addition small and only check enabled flag here. */ \
3013 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3014 if (JvmtiExport::should_post_field_access()) { \
3015 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3016 } \
3017 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3018 return ret;\
3019 JNI_END
3020
3021 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean)
3022 DEFINE_GETSTATICFIELD(jbyte, byte, Byte)
3023 DEFINE_GETSTATICFIELD(jchar, char, Char)
3024 DEFINE_GETSTATICFIELD(jshort, short, Short)
3025 DEFINE_GETSTATICFIELD(jint, int, Int)
3026 DEFINE_GETSTATICFIELD(jlong, long, Long)
3027 DEFINE_GETSTATICFIELD(jfloat, float, Float)
3028 DEFINE_GETSTATICFIELD(jdouble, double, Double)
3029
3030 #else /* USDT2 */
3031
3032 #define DEFINE_GETSTATICFIELD(Return,Fieldname,Result \
3033 , EntryProbe, ReturnProbe) \
3034 \
3035 DT_RETURN_MARK_DECL_FOR(Result, GetStatic##Result##Field, Return \
3036 , ReturnProbe); \
3037 \
3038 JNI_ENTRY(Return, jni_GetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID)) \
3039 JNIWrapper("GetStatic" XSTR(Result) "Field"); \
3040 EntryProbe; \
3041 Return ret = 0;\
3042 DT_RETURN_MARK_FOR(Result, GetStatic##Result##Field, Return, \
3043 (const Return&)ret);\
3044 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3045 assert(id->is_static_field_id(), "invalid static field id"); \
3046 /* Keep JVMTI addition small and only check enabled flag here. */ \
3047 /* jni_GetField_probe() assumes that is okay to create handles. */ \
3048 if (JvmtiExport::should_post_field_access()) { \
3049 JvmtiExport::jni_GetField_probe(thread, NULL, NULL, id->holder(), fieldID, true); \
3050 } \
3051 ret = id->holder()->java_mirror()-> Fieldname##_field (id->offset()); \
3052 return ret;\
3053 JNI_END
3054
3055 DEFINE_GETSTATICFIELD(jboolean, bool, Boolean
3056 , HOTSPOT_JNI_GETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBOOLEANFIELD_RETURN(_ret_ref))
3057 DEFINE_GETSTATICFIELD(jbyte, byte, Byte
3058 , HOTSPOT_JNI_GETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICBYTEFIELD_RETURN(_ret_ref) )
3059 DEFINE_GETSTATICFIELD(jchar, char, Char
3060 , HOTSPOT_JNI_GETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICCHARFIELD_RETURN(_ret_ref) )
3061 DEFINE_GETSTATICFIELD(jshort, short, Short
3062 , HOTSPOT_JNI_GETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICSHORTFIELD_RETURN(_ret_ref) )
3063 DEFINE_GETSTATICFIELD(jint, int, Int
3064 , HOTSPOT_JNI_GETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICINTFIELD_RETURN(_ret_ref) )
3065 DEFINE_GETSTATICFIELD(jlong, long, Long
3066 , HOTSPOT_JNI_GETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICLONGFIELD_RETURN(_ret_ref) )
3067 // Float and double probes don't return value because dtrace doesn't currently support it
3068 DEFINE_GETSTATICFIELD(jfloat, float, Float
3069 , HOTSPOT_JNI_GETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICFLOATFIELD_RETURN() )
3070 DEFINE_GETSTATICFIELD(jdouble, double, Double
3071 , HOTSPOT_JNI_GETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID), HOTSPOT_JNI_GETSTATICDOUBLEFIELD_RETURN() )
3072 #endif /* USDT2 */
3073
3074 JNI_ENTRY(void, jni_SetStaticObjectField(JNIEnv *env, jclass clazz, jfieldID fieldID, jobject value))
3075 JNIWrapper("SetStaticObjectField");
3076 #ifndef USDT2
3077 DTRACE_PROBE4(hotspot_jni, SetStaticObjectField__entry, env, clazz, fieldID, value);
3078 #else /* USDT2 */
3079 HOTSPOT_JNI_SETSTATICOBJECTFIELD_ENTRY(
3080 env, clazz, (uintptr_t) fieldID, value);
3081 #endif /* USDT2 */
3082 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID);
3083 assert(id->is_static_field_id(), "invalid static field id");
3084 // Keep JVMTI addition small and only check enabled flag here.
3085 // jni_SetField_probe() assumes that is okay to create handles.
3086 if (JvmtiExport::should_post_field_modification()) {
3087 jvalue field_value;
3088 field_value.l = value;
3089 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
3090 }
3091 id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
3092 #ifndef USDT2
3093 DTRACE_PROBE(hotspot_jni, SetStaticObjectField__return);
3094 #else /* USDT2 */
3095 HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN(
3096 );
3097 #endif /* USDT2 */
3098 JNI_END
3099
3100
3101 #ifndef USDT2
3102 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType) \
3103 \
3104 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3105 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3106 FP_SELECT_##Result( \
3107 DTRACE_PROBE4(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID, value), \
3108 DTRACE_PROBE3(hotspot_jni, SetStatic##Result##Field__entry, env, clazz, fieldID)); \
3109 \
3110 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3111 assert(id->is_static_field_id(), "invalid static field id"); \
3112 /* Keep JVMTI addition small and only check enabled flag here. */ \
3113 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3114 if (JvmtiExport::should_post_field_modification()) { \
3115 jvalue field_value; \
3116 field_value.unionType = value; \
3117 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3118 } \
3119 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3120 DTRACE_PROBE(hotspot_jni, SetStatic##Result##Field__return);\
3121 JNI_END
3122
3123 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z)
3124 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b)
3125 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c)
3126 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s)
3127 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i)
3128 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j)
3129 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f)
3130 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d)
3131
3132 #else /* USDT2 */
3133
3134 #define DEFINE_SETSTATICFIELD(Argument,Fieldname,Result,SigType,unionType \
3135 , EntryProbe, ReturnProbe) \
3136 \
3137 JNI_ENTRY(void, jni_SetStatic##Result##Field(JNIEnv *env, jclass clazz, jfieldID fieldID, Argument value)) \
3138 JNIWrapper("SetStatic" XSTR(Result) "Field"); \
3139 EntryProbe; \
3140 \
3141 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fieldID); \
3142 assert(id->is_static_field_id(), "invalid static field id"); \
3143 /* Keep JVMTI addition small and only check enabled flag here. */ \
3144 /* jni_SetField_probe() assumes that is okay to create handles. */ \
3145 if (JvmtiExport::should_post_field_modification()) { \
3146 jvalue field_value; \
3147 field_value.unionType = value; \
3148 JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
3149 } \
3150 id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
3151 ReturnProbe;\
3152 JNI_END
3153
3154 DEFINE_SETSTATICFIELD(jboolean, bool, Boolean, 'Z', z
3155 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
3156 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
3157 DEFINE_SETSTATICFIELD(jbyte, byte, Byte, 'B', b
3158 , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3159 HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
3160 DEFINE_SETSTATICFIELD(jchar, char, Char, 'C', c
3161 , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3162 HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
3163 DEFINE_SETSTATICFIELD(jshort, short, Short, 'S', s
3164 , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3165 HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
3166 DEFINE_SETSTATICFIELD(jint, int, Int, 'I', i
3167 , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3168 HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
3169 DEFINE_SETSTATICFIELD(jlong, long, Long, 'J', j
3170 , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
3171 HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
3172 // Float and double probes don't return value because dtrace doesn't currently support it
3173 DEFINE_SETSTATICFIELD(jfloat, float, Float, 'F', f
3174 , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3175 HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
3176 DEFINE_SETSTATICFIELD(jdouble, double, Double, 'D', d
3177 , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
3178 HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
3179 #endif /* USDT2 */
3180
3181 //
3182 // String Operations
3183 //
3184
3185 // Unicode Interface
3186
3187 #ifndef USDT2
3188 DT_RETURN_MARK_DECL(NewString, jstring);
3189 #else /* USDT2 */
3190 DT_RETURN_MARK_DECL(NewString, jstring
3191 , HOTSPOT_JNI_NEWSTRING_RETURN(_ret_ref));
3192 #endif /* USDT2 */
3193
3194 JNI_ENTRY(jstring, jni_NewString(JNIEnv *env, const jchar *unicodeChars, jsize len))
3195 JNIWrapper("NewString");
3196 #ifndef USDT2
3197 DTRACE_PROBE3(hotspot_jni, NewString__entry, env, unicodeChars, len);
3198 #else /* USDT2 */
3199 HOTSPOT_JNI_NEWSTRING_ENTRY(
3200 env, (uint16_t *) unicodeChars, len);
3201 #endif /* USDT2 */
3202 jstring ret = NULL;
3203 DT_RETURN_MARK(NewString, jstring, (const jstring&)ret);
3204 oop string=java_lang_String::create_oop_from_unicode((jchar*) unicodeChars, len, CHECK_NULL);
3205 ret = (jstring) JNIHandles::make_local(env, string);
3206 return ret;
3207 JNI_END
3208
3209
3210 JNI_QUICK_ENTRY(jsize, jni_GetStringLength(JNIEnv *env, jstring string))
3211 JNIWrapper("GetStringLength");
3212 #ifndef USDT2
3213 DTRACE_PROBE2(hotspot_jni, GetStringLength__entry, env, string);
3214 #else /* USDT2 */
3215 HOTSPOT_JNI_GETSTRINGLENGTH_ENTRY(
3216 env, string);
3217 #endif /* USDT2 */
3218 jsize ret = java_lang_String::length(JNIHandles::resolve_non_null(string));
3219 #ifndef USDT2
3220 DTRACE_PROBE1(hotspot_jni, GetStringLength__return, ret);
3221 #else /* USDT2 */
3222 HOTSPOT_JNI_GETSTRINGLENGTH_RETURN(
3223 ret);
3224 #endif /* USDT2 */
3225 return ret;
3226 JNI_END
3227
3228
3229 JNI_QUICK_ENTRY(const jchar*, jni_GetStringChars(
3230 JNIEnv *env, jstring string, jboolean *isCopy))
3231 JNIWrapper("GetStringChars");
3232 #ifndef USDT2
3233 DTRACE_PROBE3(hotspot_jni, GetStringChars__entry, env, string, isCopy);
3234 #else /* USDT2 */
3235 HOTSPOT_JNI_GETSTRINGCHARS_ENTRY(
3236 env, string, (uintptr_t *) isCopy);
3237 #endif /* USDT2 */
3238 //%note jni_5
3239 if (isCopy != NULL) {
3240 *isCopy = JNI_TRUE;
3241 }
3242 oop s = JNIHandles::resolve_non_null(string);
3243 int s_len = java_lang_String::length(s);
3244 typeArrayOop s_value = java_lang_String::value(s);
3245 int s_offset = java_lang_String::offset(s);
3246 jchar* buf = NEW_C_HEAP_ARRAY(jchar, s_len + 1, mtInternal); // add one for zero termination
3247 if (s_len > 0) {
3248 memcpy(buf, s_value->char_at_addr(s_offset), sizeof(jchar)*s_len);
3249 }
3250 buf[s_len] = 0;
3251 #ifndef USDT2
3252 DTRACE_PROBE1(hotspot_jni, GetStringChars__return, buf);
3253 #else /* USDT2 */
3254 HOTSPOT_JNI_GETSTRINGCHARS_RETURN(
3255 buf);
3256 #endif /* USDT2 */
3257 return buf;
3258 JNI_END
3259
3260
3261 JNI_QUICK_ENTRY(void, jni_ReleaseStringChars(JNIEnv *env, jstring str, const jchar *chars))
3262 JNIWrapper("ReleaseStringChars");
3263 #ifndef USDT2
3264 DTRACE_PROBE3(hotspot_jni, ReleaseStringChars__entry, env, str, chars);
3265 #else /* USDT2 */
3266 HOTSPOT_JNI_RELEASESTRINGCHARS_ENTRY(
3267 env, str, (uint16_t *) chars);
3268 #endif /* USDT2 */
3269 //%note jni_6
3270 if (chars != NULL) {
3271 // Since String objects are supposed to be immutable, don't copy any
3272 // new data back. A bad user will have to go after the char array.
3273 FreeHeap((void*) chars);
3274 }
3275 #ifndef USDT2
3276 DTRACE_PROBE(hotspot_jni, ReleaseStringChars__return);
3277 #else /* USDT2 */
3278 HOTSPOT_JNI_RELEASESTRINGCHARS_RETURN(
3279 );
3280 #endif /* USDT2 */
3281 JNI_END
3282
3283
3284 // UTF Interface
3285
3286 #ifndef USDT2
3287 DT_RETURN_MARK_DECL(NewStringUTF, jstring);
3288 #else /* USDT2 */
3289 DT_RETURN_MARK_DECL(NewStringUTF, jstring
3290 , HOTSPOT_JNI_NEWSTRINGUTF_RETURN(_ret_ref));
3291 #endif /* USDT2 */
3292
3293 JNI_ENTRY(jstring, jni_NewStringUTF(JNIEnv *env, const char *bytes))
3294 JNIWrapper("NewStringUTF");
3295 #ifndef USDT2
3296 DTRACE_PROBE2(hotspot_jni, NewStringUTF__entry, env, bytes);
3297 #else /* USDT2 */
3298 HOTSPOT_JNI_NEWSTRINGUTF_ENTRY(
3299 env, (char *) bytes);
3300 #endif /* USDT2 */
3301 jstring ret;
3302 DT_RETURN_MARK(NewStringUTF, jstring, (const jstring&)ret);
3303
3304 oop result = java_lang_String::create_oop_from_str((char*) bytes, CHECK_NULL);
3305 ret = (jstring) JNIHandles::make_local(env, result);
3306 return ret;
3307 JNI_END
3308
3309
3310 JNI_ENTRY(jsize, jni_GetStringUTFLength(JNIEnv *env, jstring string))
3311 JNIWrapper("GetStringUTFLength");
3312 #ifndef USDT2
3313 DTRACE_PROBE2(hotspot_jni, GetStringUTFLength__entry, env, string);
3314 #else /* USDT2 */
3315 HOTSPOT_JNI_GETSTRINGUTFLENGTH_ENTRY(
3316 env, string);
3317 #endif /* USDT2 */
3318 jsize ret = java_lang_String::utf8_length(JNIHandles::resolve_non_null(string));
3319 #ifndef USDT2
3320 DTRACE_PROBE1(hotspot_jni, GetStringUTFLength__return, ret);
3321 #else /* USDT2 */
3322 HOTSPOT_JNI_GETSTRINGUTFLENGTH_RETURN(
3323 ret);
3324 #endif /* USDT2 */
3325 return ret;
3326 JNI_END
3327
3328
3329 JNI_ENTRY(const char*, jni_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy))
3330 JNIWrapper("GetStringUTFChars");
3331 #ifndef USDT2
3332 DTRACE_PROBE3(hotspot_jni, GetStringUTFChars__entry, env, string, isCopy);
3333 #else /* USDT2 */
3334 HOTSPOT_JNI_GETSTRINGUTFCHARS_ENTRY(
3335 env, string, (uintptr_t *) isCopy);
3336 #endif /* USDT2 */
3337 oop java_string = JNIHandles::resolve_non_null(string);
3338 size_t length = java_lang_String::utf8_length(java_string);
3339 char* result = AllocateHeap(length + 1, mtInternal);
3340 java_lang_String::as_utf8_string(java_string, result, (int) length + 1);
3341 if (isCopy != NULL) *isCopy = JNI_TRUE;
3342 #ifndef USDT2
3343 DTRACE_PROBE1(hotspot_jni, GetStringUTFChars__return, result);
3344 #else /* USDT2 */
3345 HOTSPOT_JNI_GETSTRINGUTFCHARS_RETURN(
3346 result);
3347 #endif /* USDT2 */
3348 return result;
3349 JNI_END
3350
3351
3352 JNI_LEAF(void, jni_ReleaseStringUTFChars(JNIEnv *env, jstring str, const char *chars))
3353 JNIWrapper("ReleaseStringUTFChars");
3354 #ifndef USDT2
3355 DTRACE_PROBE3(hotspot_jni, ReleaseStringUTFChars__entry, env, str, chars);
3356 #else /* USDT2 */
3357 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_ENTRY(
3358 env, str, (char *) chars);
3359 #endif /* USDT2 */
3360 if (chars != NULL) {
3361 FreeHeap((char*) chars);
3362 }
3363 #ifndef USDT2
3364 DTRACE_PROBE(hotspot_jni, ReleaseStringUTFChars__return);
3365 #else /* USDT2 */
3366 HOTSPOT_JNI_RELEASESTRINGUTFCHARS_RETURN(
3367 );
3368 #endif /* USDT2 */
3369 JNI_END
3370
3371
3372 JNI_QUICK_ENTRY(jsize, jni_GetArrayLength(JNIEnv *env, jarray array))
3373 JNIWrapper("GetArrayLength");
3374 #ifndef USDT2
3375 DTRACE_PROBE2(hotspot_jni, GetArrayLength__entry, env, array);
3376 #else /* USDT2 */
3377 HOTSPOT_JNI_GETARRAYLENGTH_ENTRY(
3378 env, array);
3379 #endif /* USDT2 */
3380 arrayOop a = arrayOop(JNIHandles::resolve_non_null(array));
3381 assert(a->is_array(), "must be array");
3382 jsize ret = a->length();
3383 #ifndef USDT2
3384 DTRACE_PROBE1(hotspot_jni, GetArrayLength__return, ret);
3385 #else /* USDT2 */
3386 HOTSPOT_JNI_GETARRAYLENGTH_RETURN(
3387 ret);
3388 #endif /* USDT2 */
3389 return ret;
3390 JNI_END
3391
3392
3393 //
3394 // Object Array Operations
3395 //
3396
3397 #ifndef USDT2
3398 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray);
3399 #else /* USDT2 */
3400 DT_RETURN_MARK_DECL(NewObjectArray, jobjectArray
3401 , HOTSPOT_JNI_NEWOBJECTARRAY_RETURN(_ret_ref));
3402 #endif /* USDT2 */
3403
3404 JNI_ENTRY(jobjectArray, jni_NewObjectArray(JNIEnv *env, jsize length, jclass elementClass, jobject initialElement))
3405 JNIWrapper("NewObjectArray");
3406 #ifndef USDT2
3407 DTRACE_PROBE4(hotspot_jni, NewObjectArray__entry, env, length, elementClass, initialElement);
3408 #else /* USDT2 */
3409 HOTSPOT_JNI_NEWOBJECTARRAY_ENTRY(
3410 env, length, elementClass, initialElement);
3411 #endif /* USDT2 */
3412 jobjectArray ret = NULL;
3413 DT_RETURN_MARK(NewObjectArray, jobjectArray, (const jobjectArray&)ret);
3414 KlassHandle ek(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(elementClass)));
3415 Klass* ako = ek()->array_klass(CHECK_NULL);
3416 KlassHandle ak = KlassHandle(THREAD, ako);
3417 ObjArrayKlass::cast(ak())->initialize(CHECK_NULL);
3418 objArrayOop result = ObjArrayKlass::cast(ak())->allocate(length, CHECK_NULL);
3419 oop initial_value = JNIHandles::resolve(initialElement);
3420 if (initial_value != NULL) { // array already initialized with NULL
3421 for (int index = 0; index < length; index++) {
3422 result->obj_at_put(index, initial_value);
3423 }
3424 }
3425 ret = (jobjectArray) JNIHandles::make_local(env, result);
3426 return ret;
3427 JNI_END
3428
3429 #ifndef USDT2
3430 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject);
3431 #else /* USDT2 */
3432 DT_RETURN_MARK_DECL(GetObjectArrayElement, jobject
3433 , HOTSPOT_JNI_GETOBJECTARRAYELEMENT_RETURN(_ret_ref));
3434 #endif /* USDT2 */
3435
3436 JNI_ENTRY(jobject, jni_GetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index))
3437 JNIWrapper("GetObjectArrayElement");
3438 #ifndef USDT2
3439 DTRACE_PROBE3(hotspot_jni, GetObjectArrayElement__entry, env, array, index);
3440 #else /* USDT2 */
3441 HOTSPOT_JNI_GETOBJECTARRAYELEMENT_ENTRY(
3442 env, array, index);
3443 #endif /* USDT2 */
3444 jobject ret = NULL;
3445 DT_RETURN_MARK(GetObjectArrayElement, jobject, (const jobject&)ret);
3446 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3447 if (a->is_within_bounds(index)) {
3448 ret = JNIHandles::make_local(env, a->obj_at(index));
3449 return ret;
3450 } else {
3451 char buf[jintAsStringSize];
3452 sprintf(buf, "%d", index);
3453 THROW_MSG_0(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3454 }
3455 JNI_END
3456
3457 #ifndef USDT2
3458 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement);
3459 #else /* USDT2 */
3460 DT_VOID_RETURN_MARK_DECL(SetObjectArrayElement
3461 , HOTSPOT_JNI_SETOBJECTARRAYELEMENT_RETURN());
3462 #endif /* USDT2 */
3463
3464 JNI_ENTRY(void, jni_SetObjectArrayElement(JNIEnv *env, jobjectArray array, jsize index, jobject value))
3465 JNIWrapper("SetObjectArrayElement");
3466 #ifndef USDT2
3467 DTRACE_PROBE4(hotspot_jni, SetObjectArrayElement__entry, env, array, index, value);
3468 #else /* USDT2 */
3469 HOTSPOT_JNI_SETOBJECTARRAYELEMENT_ENTRY(
3470 env, array, index, value);
3471 #endif /* USDT2 */
3472 DT_VOID_RETURN_MARK(SetObjectArrayElement);
3473
3474 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(array));
3475 oop v = JNIHandles::resolve(value);
3476 if (a->is_within_bounds(index)) {
3477 if (v == NULL || v->is_a(ObjArrayKlass::cast(a->klass())->element_klass())) {
3478 a->obj_at_put(index, v);
3479 } else {
3480 THROW(vmSymbols::java_lang_ArrayStoreException());
3481 }
3482 } else {
3483 char buf[jintAsStringSize];
3484 sprintf(buf, "%d", index);
3485 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), buf);
3486 }
3487 JNI_END
3488
3489
3490 #ifndef USDT2
3491 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result) \
3492 \
3493 DT_RETURN_MARK_DECL(New##Result##Array, Return); \
3494 \
3495 JNI_ENTRY(Return, \
3496 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3497 JNIWrapper("New" XSTR(Result) "Array"); \
3498 DTRACE_PROBE2(hotspot_jni, New##Result##Array__entry, env, len);\
3499 Return ret = NULL;\
3500 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3501 \
3502 oop obj= oopFactory::Allocator(len, CHECK_0); \
3503 ret = (Return) JNIHandles::make_local(env, obj); \
3504 return ret;\
3505 JNI_END
3506
3507 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean)
3508 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte)
3509 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short)
3510 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char)
3511 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int)
3512 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long)
3513 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float)
3514 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double)
3515
3516 #else /* USDT2 */
3517
3518 #define DEFINE_NEWSCALARARRAY(Return,Allocator,Result \
3519 ,EntryProbe,ReturnProbe) \
3520 \
3521 DT_RETURN_MARK_DECL(New##Result##Array, Return \
3522 , ReturnProbe); \
3523 \
3524 JNI_ENTRY(Return, \
3525 jni_New##Result##Array(JNIEnv *env, jsize len)) \
3526 JNIWrapper("New" XSTR(Result) "Array"); \
3527 EntryProbe; \
3528 Return ret = NULL;\
3529 DT_RETURN_MARK(New##Result##Array, Return, (const Return&)ret);\
3530 \
3531 oop obj= oopFactory::Allocator(len, CHECK_0); \
3532 ret = (Return) JNIHandles::make_local(env, obj); \
3533 return ret;\
3534 JNI_END
3535
3536 DEFINE_NEWSCALARARRAY(jbooleanArray, new_boolArray, Boolean,
3537 HOTSPOT_JNI_NEWBOOLEANARRAY_ENTRY(env, len),
3538 HOTSPOT_JNI_NEWBOOLEANARRAY_RETURN(_ret_ref))
3539 DEFINE_NEWSCALARARRAY(jbyteArray, new_byteArray, Byte,
3540 HOTSPOT_JNI_NEWBYTEARRAY_ENTRY(env, len),
3541 HOTSPOT_JNI_NEWBYTEARRAY_RETURN(_ret_ref))
3542 DEFINE_NEWSCALARARRAY(jshortArray, new_shortArray, Short,
3543 HOTSPOT_JNI_NEWSHORTARRAY_ENTRY(env, len),
3544 HOTSPOT_JNI_NEWSHORTARRAY_RETURN(_ret_ref))
3545 DEFINE_NEWSCALARARRAY(jcharArray, new_charArray, Char,
3546 HOTSPOT_JNI_NEWCHARARRAY_ENTRY(env, len),
3547 HOTSPOT_JNI_NEWCHARARRAY_RETURN(_ret_ref))
3548 DEFINE_NEWSCALARARRAY(jintArray, new_intArray, Int,
3549 HOTSPOT_JNI_NEWINTARRAY_ENTRY(env, len),
3550 HOTSPOT_JNI_NEWINTARRAY_RETURN(_ret_ref))
3551 DEFINE_NEWSCALARARRAY(jlongArray, new_longArray, Long,
3552 HOTSPOT_JNI_NEWLONGARRAY_ENTRY(env, len),
3553 HOTSPOT_JNI_NEWLONGARRAY_RETURN(_ret_ref))
3554 DEFINE_NEWSCALARARRAY(jfloatArray, new_singleArray, Float,
3555 HOTSPOT_JNI_NEWFLOATARRAY_ENTRY(env, len),
3556 HOTSPOT_JNI_NEWFLOATARRAY_RETURN(_ret_ref))
3557 DEFINE_NEWSCALARARRAY(jdoubleArray, new_doubleArray, Double,
3558 HOTSPOT_JNI_NEWDOUBLEARRAY_ENTRY(env, len),
3559 HOTSPOT_JNI_NEWDOUBLEARRAY_RETURN(_ret_ref))
3560 #endif /* USDT2 */
3561
3562 // Return an address which will fault if the caller writes to it.
3563
3564 static char* get_bad_address() {
3565 static char* bad_address = NULL;
3566 if (bad_address == NULL) {
3567 size_t size = os::vm_allocation_granularity();
3568 bad_address = os::reserve_memory(size);
3569 if (bad_address != NULL) {
3570 os::protect_memory(bad_address, size, os::MEM_PROT_READ,
3571 /*is_committed*/false);
3572 }
3573 }
3574 return bad_address;
3575 }
3576
3577
3578 #ifndef USDT2
3579 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag) \
3580 \
3581 JNI_QUICK_ENTRY(ElementType*, \
3582 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3583 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3584 DTRACE_PROBE3(hotspot_jni, Get##Result##ArrayElements__entry, env, array, isCopy);\
3585 /* allocate an chunk of memory in c land */ \
3586 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3587 ElementType* result; \
3588 int len = a->length(); \
3589 if (len == 0) { \
3590 /* Empty array: legal but useless, can't return NULL. \
3591 * Return a pointer to something useless. \
3592 * Avoid asserts in typeArrayOop. */ \
3593 result = (ElementType*)get_bad_address(); \
3594 } else { \
3595 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3596 /* copy the array to the c chunk */ \
3597 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3598 } \
3599 if (isCopy) *isCopy = JNI_TRUE; \
3600 DTRACE_PROBE1(hotspot_jni, Get##Result##ArrayElements__return, result);\
3601 return result; \
3602 JNI_END
3603
3604 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3605 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3606 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3607 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3608 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int)
3609 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3610 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3611 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3612
3613 #else /* USDT2 */
3614
3615 #define DEFINE_GETSCALARARRAYELEMENTS(ElementTag,ElementType,Result, Tag \
3616 , EntryProbe, ReturnProbe) \
3617 \
3618 JNI_QUICK_ENTRY(ElementType*, \
3619 jni_Get##Result##ArrayElements(JNIEnv *env, ElementType##Array array, jboolean *isCopy)) \
3620 JNIWrapper("Get" XSTR(Result) "ArrayElements"); \
3621 EntryProbe; \
3622 /* allocate an chunk of memory in c land */ \
3623 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3624 ElementType* result; \
3625 int len = a->length(); \
3626 if (len == 0) { \
3627 /* Empty array: legal but useless, can't return NULL. \
3628 * Return a pointer to something useless. \
3629 * Avoid asserts in typeArrayOop. */ \
3630 result = (ElementType*)get_bad_address(); \
3631 } else { \
3632 result = NEW_C_HEAP_ARRAY(ElementType, len, mtInternal); \
3633 /* copy the array to the c chunk */ \
3634 memcpy(result, a->Tag##_at_addr(0), sizeof(ElementType)*len); \
3635 } \
3636 if (isCopy) *isCopy = JNI_TRUE; \
3637 ReturnProbe; \
3638 return result; \
3639 JNI_END
3640
3641 DEFINE_GETSCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3642 , HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3643 HOTSPOT_JNI_GETBOOLEANARRAYELEMENTS_RETURN((uintptr_t*)result))
3644 DEFINE_GETSCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3645 , HOTSPOT_JNI_GETBYTEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3646 HOTSPOT_JNI_GETBYTEARRAYELEMENTS_RETURN((char*)result))
3647 DEFINE_GETSCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3648 , HOTSPOT_JNI_GETSHORTARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3649 HOTSPOT_JNI_GETSHORTARRAYELEMENTS_RETURN((uint16_t*)result))
3650 DEFINE_GETSCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3651 , HOTSPOT_JNI_GETCHARARRAYELEMENTS_ENTRY(env, (uint16_t*) array, (uintptr_t *) isCopy),
3652 HOTSPOT_JNI_GETCHARARRAYELEMENTS_RETURN(result))
3653 DEFINE_GETSCALARARRAYELEMENTS(T_INT, jint, Int, int
3654 , HOTSPOT_JNI_GETINTARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3655 HOTSPOT_JNI_GETINTARRAYELEMENTS_RETURN((uint32_t*)result))
3656 DEFINE_GETSCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3657 , HOTSPOT_JNI_GETLONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3658 HOTSPOT_JNI_GETLONGARRAYELEMENTS_RETURN(((uintptr_t*)result)))
3659 // Float and double probes don't return value because dtrace doesn't currently support it
3660 DEFINE_GETSCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3661 , HOTSPOT_JNI_GETFLOATARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3662 HOTSPOT_JNI_GETFLOATARRAYELEMENTS_RETURN(result))
3663 DEFINE_GETSCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3664 , HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) isCopy),
3665 HOTSPOT_JNI_GETDOUBLEARRAYELEMENTS_RETURN(result))
3666 #endif /* USDT2 */
3667
3668 #ifndef USDT2
3669 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag) \
3670 \
3671 JNI_QUICK_ENTRY(void, \
3672 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3673 ElementType *buf, jint mode)) \
3674 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3675 DTRACE_PROBE4(hotspot_jni, Release##Result##ArrayElements__entry, env, array, buf, mode);\
3676 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3677 int len = a->length(); \
3678 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3679 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3680 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3681 } \
3682 if ((mode == 0) || (mode == JNI_ABORT)) { \
3683 FreeHeap(buf); \
3684 } \
3685 } \
3686 DTRACE_PROBE(hotspot_jni, Release##Result##ArrayElements__return);\
3687 JNI_END
3688
3689 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool)
3690 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte)
3691 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short)
3692 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char)
3693 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int)
3694 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long)
3695 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float)
3696 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double)
3697
3698 #else /* USDT2 */
3699
3700 #define DEFINE_RELEASESCALARARRAYELEMENTS(ElementTag,ElementType,Result,Tag \
3701 , EntryProbe, ReturnProbe);\
3702 \
3703 JNI_QUICK_ENTRY(void, \
3704 jni_Release##Result##ArrayElements(JNIEnv *env, ElementType##Array array, \
3705 ElementType *buf, jint mode)) \
3706 JNIWrapper("Release" XSTR(Result) "ArrayElements"); \
3707 EntryProbe; \
3708 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3709 int len = a->length(); \
3710 if (len != 0) { /* Empty array: nothing to free or copy. */ \
3711 if ((mode == 0) || (mode == JNI_COMMIT)) { \
3712 memcpy(a->Tag##_at_addr(0), buf, sizeof(ElementType)*len); \
3713 } \
3714 if ((mode == 0) || (mode == JNI_ABORT)) { \
3715 FreeHeap(buf); \
3716 } \
3717 } \
3718 ReturnProbe; \
3719 JNI_END
3720
3721 DEFINE_RELEASESCALARARRAYELEMENTS(T_BOOLEAN, jboolean, Boolean, bool
3722 , HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3723 HOTSPOT_JNI_RELEASEBOOLEANARRAYELEMENTS_RETURN())
3724 DEFINE_RELEASESCALARARRAYELEMENTS(T_BYTE, jbyte, Byte, byte
3725 , HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_ENTRY(env, array, (char *) buf, mode),
3726 HOTSPOT_JNI_RELEASEBYTEARRAYELEMENTS_RETURN())
3727 DEFINE_RELEASESCALARARRAYELEMENTS(T_SHORT, jshort, Short, short
3728 , HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3729 HOTSPOT_JNI_RELEASESHORTARRAYELEMENTS_RETURN())
3730 DEFINE_RELEASESCALARARRAYELEMENTS(T_CHAR, jchar, Char, char
3731 , HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_ENTRY(env, array, (uint16_t *) buf, mode),
3732 HOTSPOT_JNI_RELEASECHARARRAYELEMENTS_RETURN())
3733 DEFINE_RELEASESCALARARRAYELEMENTS(T_INT, jint, Int, int
3734 , HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_ENTRY(env, array, (uint32_t *) buf, mode),
3735 HOTSPOT_JNI_RELEASEINTARRAYELEMENTS_RETURN())
3736 DEFINE_RELEASESCALARARRAYELEMENTS(T_LONG, jlong, Long, long
3737 , HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_ENTRY(env, array, (uintptr_t *) buf, mode),
3738 HOTSPOT_JNI_RELEASELONGARRAYELEMENTS_RETURN())
3739 DEFINE_RELEASESCALARARRAYELEMENTS(T_FLOAT, jfloat, Float, float
3740 , HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_ENTRY(env, array, (float *) buf, mode),
3741 HOTSPOT_JNI_RELEASEFLOATARRAYELEMENTS_RETURN())
3742 DEFINE_RELEASESCALARARRAYELEMENTS(T_DOUBLE, jdouble, Double, double
3743 , HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_ENTRY(env, array, (double *) buf, mode),
3744 HOTSPOT_JNI_RELEASEDOUBLEARRAYELEMENTS_RETURN())
3745 #endif /* USDT2 */
3746
3747 #ifndef USDT2
3748 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3749 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion);\
3750 \
3751 JNI_ENTRY(void, \
3752 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3753 jsize len, ElementType *buf)) \
3754 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3755 DTRACE_PROBE5(hotspot_jni, Get##Result##ArrayRegion__entry, env, array, start, len, buf);\
3756 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3757 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3758 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3759 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3760 } else { \
3761 if (len > 0) { \
3762 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3763 memcpy((u_char*) buf, \
3764 (u_char*) src->Tag##_at_addr(start), \
3765 len << sc); \
3766 } \
3767 } \
3768 JNI_END
3769
3770 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool)
3771 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3772 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3773 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3774 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int)
3775 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3776 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3777 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3778
3779 #else /* USDT2 */
3780
3781 #define DEFINE_GETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3782 , EntryProbe, ReturnProbe); \
3783 DT_VOID_RETURN_MARK_DECL(Get##Result##ArrayRegion \
3784 , ReturnProbe); \
3785 \
3786 JNI_ENTRY(void, \
3787 jni_Get##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3788 jsize len, ElementType *buf)) \
3789 JNIWrapper("Get" XSTR(Result) "ArrayRegion"); \
3790 EntryProbe; \
3791 DT_VOID_RETURN_MARK(Get##Result##ArrayRegion); \
3792 typeArrayOop src = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3793 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)src->length())) { \
3794 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3795 } else { \
3796 if (len > 0) { \
3797 int sc = TypeArrayKlass::cast(src->klass())->log2_element_size(); \
3798 memcpy((u_char*) buf, \
3799 (u_char*) src->Tag##_at_addr(start), \
3800 len << sc); \
3801 } \
3802 } \
3803 JNI_END
3804
3805 DEFINE_GETSCALARARRAYREGION(T_BOOLEAN, jboolean,Boolean, bool
3806 , HOTSPOT_JNI_GETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3807 HOTSPOT_JNI_GETBOOLEANARRAYREGION_RETURN());
3808 DEFINE_GETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3809 , HOTSPOT_JNI_GETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3810 HOTSPOT_JNI_GETBYTEARRAYREGION_RETURN());
3811 DEFINE_GETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3812 , HOTSPOT_JNI_GETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3813 HOTSPOT_JNI_GETSHORTARRAYREGION_RETURN());
3814 DEFINE_GETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3815 , HOTSPOT_JNI_GETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t*) buf),
3816 HOTSPOT_JNI_GETCHARARRAYREGION_RETURN());
3817 DEFINE_GETSCALARARRAYREGION(T_INT, jint, Int, int
3818 , HOTSPOT_JNI_GETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t*) buf),
3819 HOTSPOT_JNI_GETINTARRAYREGION_RETURN());
3820 DEFINE_GETSCALARARRAYREGION(T_LONG, jlong, Long, long
3821 , HOTSPOT_JNI_GETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3822 HOTSPOT_JNI_GETLONGARRAYREGION_RETURN());
3823 DEFINE_GETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3824 , HOTSPOT_JNI_GETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3825 HOTSPOT_JNI_GETFLOATARRAYREGION_RETURN());
3826 DEFINE_GETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3827 , HOTSPOT_JNI_GETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3828 HOTSPOT_JNI_GETDOUBLEARRAYREGION_RETURN());
3829 #endif /* USDT2 */
3830
3831 #ifndef USDT2
3832 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag) \
3833 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion);\
3834 \
3835 JNI_ENTRY(void, \
3836 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3837 jsize len, const ElementType *buf)) \
3838 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3839 DTRACE_PROBE5(hotspot_jni, Set##Result##ArrayRegion__entry, env, array, start, len, buf);\
3840 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3841 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3842 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3843 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3844 } else { \
3845 if (len > 0) { \
3846 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3847 memcpy((u_char*) dst->Tag##_at_addr(start), \
3848 (u_char*) buf, \
3849 len << sc); \
3850 } \
3851 } \
3852 JNI_END
3853
3854 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool)
3855 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte)
3856 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short)
3857 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char)
3858 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int)
3859 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long)
3860 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float)
3861 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double)
3862
3863 #else /* USDT2 */
3864
3865 #define DEFINE_SETSCALARARRAYREGION(ElementTag,ElementType,Result, Tag \
3866 , EntryProbe, ReturnProbe); \
3867 DT_VOID_RETURN_MARK_DECL(Set##Result##ArrayRegion \
3868 ,ReturnProbe); \
3869 \
3870 JNI_ENTRY(void, \
3871 jni_Set##Result##ArrayRegion(JNIEnv *env, ElementType##Array array, jsize start, \
3872 jsize len, const ElementType *buf)) \
3873 JNIWrapper("Set" XSTR(Result) "ArrayRegion"); \
3874 EntryProbe; \
3875 DT_VOID_RETURN_MARK(Set##Result##ArrayRegion); \
3876 typeArrayOop dst = typeArrayOop(JNIHandles::resolve_non_null(array)); \
3877 if (start < 0 || len < 0 || ((unsigned int)start + (unsigned int)len > (unsigned int)dst->length())) { \
3878 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); \
3879 } else { \
3880 if (len > 0) { \
3881 int sc = TypeArrayKlass::cast(dst->klass())->log2_element_size(); \
3882 memcpy((u_char*) dst->Tag##_at_addr(start), \
3883 (u_char*) buf, \
3884 len << sc); \
3885 } \
3886 } \
3887 JNI_END
3888
3889 DEFINE_SETSCALARARRAYREGION(T_BOOLEAN, jboolean, Boolean, bool
3890 , HOTSPOT_JNI_SETBOOLEANARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *)buf),
3891 HOTSPOT_JNI_SETBOOLEANARRAYREGION_RETURN())
3892 DEFINE_SETSCALARARRAYREGION(T_BYTE, jbyte, Byte, byte
3893 , HOTSPOT_JNI_SETBYTEARRAYREGION_ENTRY(env, array, start, len, (char *) buf),
3894 HOTSPOT_JNI_SETBYTEARRAYREGION_RETURN())
3895 DEFINE_SETSCALARARRAYREGION(T_SHORT, jshort, Short, short
3896 , HOTSPOT_JNI_SETSHORTARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3897 HOTSPOT_JNI_SETSHORTARRAYREGION_RETURN())
3898 DEFINE_SETSCALARARRAYREGION(T_CHAR, jchar, Char, char
3899 , HOTSPOT_JNI_SETCHARARRAYREGION_ENTRY(env, array, start, len, (uint16_t *) buf),
3900 HOTSPOT_JNI_SETCHARARRAYREGION_RETURN())
3901 DEFINE_SETSCALARARRAYREGION(T_INT, jint, Int, int
3902 , HOTSPOT_JNI_SETINTARRAYREGION_ENTRY(env, array, start, len, (uint32_t *) buf),
3903 HOTSPOT_JNI_SETINTARRAYREGION_RETURN())
3904 DEFINE_SETSCALARARRAYREGION(T_LONG, jlong, Long, long
3905 , HOTSPOT_JNI_SETLONGARRAYREGION_ENTRY(env, array, start, len, (uintptr_t *) buf),
3906 HOTSPOT_JNI_SETLONGARRAYREGION_RETURN())
3907 DEFINE_SETSCALARARRAYREGION(T_FLOAT, jfloat, Float, float
3908 , HOTSPOT_JNI_SETFLOATARRAYREGION_ENTRY(env, array, start, len, (float *) buf),
3909 HOTSPOT_JNI_SETFLOATARRAYREGION_RETURN())
3910 DEFINE_SETSCALARARRAYREGION(T_DOUBLE, jdouble, Double, double
3911 , HOTSPOT_JNI_SETDOUBLEARRAYREGION_ENTRY(env, array, start, len, (double *) buf),
3912 HOTSPOT_JNI_SETDOUBLEARRAYREGION_RETURN())
3913 #endif /* USDT2 */
3914
3915
3916 //
3917 // Interception of natives
3918 //
3919
3920 // The RegisterNatives call being attempted tried to register with a method that
3921 // is not native. Ask JVM TI what prefixes have been specified. Then check
3922 // to see if the native method is now wrapped with the prefixes. See the
3923 // SetNativeMethodPrefix(es) functions in the JVM TI Spec for details.
3924 static Method* find_prefixed_native(KlassHandle k,
3925 Symbol* name, Symbol* signature, TRAPS) {
3926 #if INCLUDE_JVMTI
3927 ResourceMark rm(THREAD);
3928 Method* method;
3929 int name_len = name->utf8_length();
3930 char* name_str = name->as_utf8();
3931 int prefix_count;
3932 char** prefixes = JvmtiExport::get_all_native_method_prefixes(&prefix_count);
3933 for (int i = 0; i < prefix_count; i++) {
3934 char* prefix = prefixes[i];
3935 int prefix_len = (int)strlen(prefix);
3936
3937 // try adding this prefix to the method name and see if it matches another method name
3938 int trial_len = name_len + prefix_len;
3939 char* trial_name_str = NEW_RESOURCE_ARRAY(char, trial_len + 1);
3940 strcpy(trial_name_str, prefix);
3941 strcat(trial_name_str, name_str);
3942 TempNewSymbol trial_name = SymbolTable::probe(trial_name_str, trial_len);
3943 if (trial_name == NULL) {
3944 continue; // no such symbol, so this prefix wasn't used, try the next prefix
3945 }
3946 method = k()->lookup_method(trial_name, signature);
3947 if (method == NULL) {
3948 continue; // signature doesn't match, try the next prefix
3949 }
3950 if (method->is_native()) {
3951 method->set_is_prefixed_native();
3952 return method; // wahoo, we found a prefixed version of the method, return it
3953 }
3954 // found as non-native, so prefix is good, add it, probably just need more prefixes
3955 name_len = trial_len;
3956 name_str = trial_name_str;
3957 }
3958 #endif // INCLUDE_JVMTI
3959 return NULL; // not found
3960 }
3961
3962 static bool register_native(KlassHandle k, Symbol* name, Symbol* signature, address entry, TRAPS) {
3963 Method* method = k()->lookup_method(name, signature);
3964 if (method == NULL) {
3965 ResourceMark rm;
3966 stringStream st;
3967 st.print("Method %s name or signature does not match",
3968 Method::name_and_sig_as_C_string(k(), name, signature));
3969 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3970 }
3971 if (!method->is_native()) {
3972 // trying to register to a non-native method, see if a JVM TI agent has added prefix(es)
3973 method = find_prefixed_native(k, name, signature, THREAD);
3974 if (method == NULL) {
3975 ResourceMark rm;
3976 stringStream st;
3977 st.print("Method %s is not declared as native",
3978 Method::name_and_sig_as_C_string(k(), name, signature));
3979 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), false);
3980 }
3981 }
3982
3983 if (entry != NULL) {
3984 method->set_native_function(entry,
3985 Method::native_bind_event_is_interesting);
3986 } else {
3987 method->clear_native_function();
3988 }
3989 if (PrintJNIResolving) {
3990 ResourceMark rm(THREAD);
3991 tty->print_cr("[Registering JNI native method %s.%s]",
3992 method->method_holder()->external_name(),
3993 method->name()->as_C_string());
3994 }
3995 return true;
3996 }
3997
3998 #ifndef USDT2
3999 DT_RETURN_MARK_DECL(RegisterNatives, jint);
4000 #else /* USDT2 */
4001 DT_RETURN_MARK_DECL(RegisterNatives, jint
4002 , HOTSPOT_JNI_REGISTERNATIVES_RETURN(_ret_ref));
4003 #endif /* USDT2 */
4004
4005 JNI_ENTRY(jint, jni_RegisterNatives(JNIEnv *env, jclass clazz,
4006 const JNINativeMethod *methods,
4007 jint nMethods))
4008 JNIWrapper("RegisterNatives");
4009 #ifndef USDT2
4010 DTRACE_PROBE4(hotspot_jni, RegisterNatives__entry, env, clazz, methods, nMethods);
4011 #else /* USDT2 */
4012 HOTSPOT_JNI_REGISTERNATIVES_ENTRY(
4013 env, clazz, (void *) methods, nMethods);
4014 #endif /* USDT2 */
4015 jint ret = 0;
4016 DT_RETURN_MARK(RegisterNatives, jint, (const jint&)ret);
4017
4018 KlassHandle h_k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
4019
4020 for (int index = 0; index < nMethods; index++) {
4021 const char* meth_name = methods[index].name;
4022 const char* meth_sig = methods[index].signature;
4023 int meth_name_len = (int)strlen(meth_name);
4024
4025 // The class should have been loaded (we have an instance of the class
4026 // passed in) so the method and signature should already be in the symbol
4027 // table. If they're not there, the method doesn't exist.
4028 TempNewSymbol name = SymbolTable::probe(meth_name, meth_name_len);
4029 TempNewSymbol signature = SymbolTable::probe(meth_sig, (int)strlen(meth_sig));
4030
4031 if (name == NULL || signature == NULL) {
4032 ResourceMark rm;
4033 stringStream st;
4034 st.print("Method %s.%s%s not found", h_k()->external_name(), meth_name, meth_sig);
4035 // Must return negative value on failure
4036 THROW_MSG_(vmSymbols::java_lang_NoSuchMethodError(), st.as_string(), -1);
4037 }
4038
4039 bool res = register_native(h_k, name, signature,
4040 (address) methods[index].fnPtr, THREAD);
4041 if (!res) {
4042 ret = -1;
4043 break;
4044 }
4045 }
4046 return ret;
4047 JNI_END
4048
4049
4050 JNI_ENTRY(jint, jni_UnregisterNatives(JNIEnv *env, jclass clazz))
4051 JNIWrapper("UnregisterNatives");
4052 #ifndef USDT2
4053 DTRACE_PROBE2(hotspot_jni, UnregisterNatives__entry, env, clazz);
4054 #else /* USDT2 */
4055 HOTSPOT_JNI_UNREGISTERNATIVES_ENTRY(
4056 env, clazz);
4057 #endif /* USDT2 */
4058 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
4059 //%note jni_2
4060 if (k->oop_is_instance()) {
4061 for (int index = 0; index < InstanceKlass::cast(k)->methods()->length(); index++) {
4062 Method* m = InstanceKlass::cast(k)->methods()->at(index);
4063 if (m->is_native()) {
4064 m->clear_native_function();
4065 m->set_signature_handler(NULL);
4066 }
4067 }
4068 }
4069 #ifndef USDT2
4070 DTRACE_PROBE1(hotspot_jni, UnregisterNatives__return, 0);
4071 #else /* USDT2 */
4072 HOTSPOT_JNI_UNREGISTERNATIVES_RETURN(
4073 0);
4074 #endif /* USDT2 */
4075 return 0;
4076 JNI_END
4077
4078 //
4079 // Monitor functions
4080 //
4081
4082 #ifndef USDT2
4083 DT_RETURN_MARK_DECL(MonitorEnter, jint);
4084 #else /* USDT2 */
4085 DT_RETURN_MARK_DECL(MonitorEnter, jint
4086 , HOTSPOT_JNI_MONITORENTER_RETURN(_ret_ref));
4087 #endif /* USDT2 */
4088
4089 JNI_ENTRY(jint, jni_MonitorEnter(JNIEnv *env, jobject jobj))
4090 #ifndef USDT2
4091 DTRACE_PROBE2(hotspot_jni, MonitorEnter__entry, env, jobj);
4092 #else /* USDT2 */
4093 HOTSPOT_JNI_MONITORENTER_ENTRY(
4094 env, jobj);
4095 #endif /* USDT2 */
4096 jint ret = JNI_ERR;
4097 DT_RETURN_MARK(MonitorEnter, jint, (const jint&)ret);
4098
4099 // If the object is null, we can't do anything with it
4100 if (jobj == NULL) {
4101 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4102 }
4103
4104 Handle obj(thread, JNIHandles::resolve_non_null(jobj));
4105 ObjectSynchronizer::jni_enter(obj, CHECK_(JNI_ERR));
4106 ret = JNI_OK;
4107 return ret;
4108 JNI_END
4109
4110 #ifndef USDT2
4111 DT_RETURN_MARK_DECL(MonitorExit, jint);
4112 #else /* USDT2 */
4113 DT_RETURN_MARK_DECL(MonitorExit, jint
4114 , HOTSPOT_JNI_MONITOREXIT_RETURN(_ret_ref));
4115 #endif /* USDT2 */
4116
4117 JNI_ENTRY(jint, jni_MonitorExit(JNIEnv *env, jobject jobj))
4118 #ifndef USDT2
4119 DTRACE_PROBE2(hotspot_jni, MonitorExit__entry, env, jobj);
4120 #else /* USDT2 */
4121 HOTSPOT_JNI_MONITOREXIT_ENTRY(
4122 env, jobj);
4123 #endif /* USDT2 */
4124 jint ret = JNI_ERR;
4125 DT_RETURN_MARK(MonitorExit, jint, (const jint&)ret);
4126
4127 // Don't do anything with a null object
4128 if (jobj == NULL) {
4129 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_ERR);
4130 }
4131
4132 Handle obj(THREAD, JNIHandles::resolve_non_null(jobj));
4133 ObjectSynchronizer::jni_exit(obj(), CHECK_(JNI_ERR));
4134
4135 ret = JNI_OK;
4136 return ret;
4137 JNI_END
4138
4139 //
4140 // Extensions
4141 //
4142
4143 #ifndef USDT2
4144 DT_VOID_RETURN_MARK_DECL(GetStringRegion);
4145 #else /* USDT2 */
4146 DT_VOID_RETURN_MARK_DECL(GetStringRegion
4147 , HOTSPOT_JNI_GETSTRINGREGION_RETURN());
4148 #endif /* USDT2 */
4149
4150 JNI_ENTRY(void, jni_GetStringRegion(JNIEnv *env, jstring string, jsize start, jsize len, jchar *buf))
4151 JNIWrapper("GetStringRegion");
4152 #ifndef USDT2
4153 DTRACE_PROBE5(hotspot_jni, GetStringRegion__entry, env, string, start, len, buf);
4154 #else /* USDT2 */
4155 HOTSPOT_JNI_GETSTRINGREGION_ENTRY(
4156 env, string, start, len, buf);
4157 #endif /* USDT2 */
4158 DT_VOID_RETURN_MARK(GetStringRegion);
4159 oop s = JNIHandles::resolve_non_null(string);
4160 int s_len = java_lang_String::length(s);
4161 if (start < 0 || len < 0 || start + len > s_len) {
4162 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4163 } else {
4164 if (len > 0) {
4165 int s_offset = java_lang_String::offset(s);
4166 typeArrayOop s_value = java_lang_String::value(s);
4167 memcpy(buf, s_value->char_at_addr(s_offset+start), sizeof(jchar)*len);
4168 }
4169 }
4170 JNI_END
4171
4172 #ifndef USDT2
4173 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion);
4174 #else /* USDT2 */
4175 DT_VOID_RETURN_MARK_DECL(GetStringUTFRegion
4176 , HOTSPOT_JNI_GETSTRINGUTFREGION_RETURN());
4177 #endif /* USDT2 */
4178
4179 JNI_ENTRY(void, jni_GetStringUTFRegion(JNIEnv *env, jstring string, jsize start, jsize len, char *buf))
4180 JNIWrapper("GetStringUTFRegion");
4181 #ifndef USDT2
4182 DTRACE_PROBE5(hotspot_jni, GetStringUTFRegion__entry, env, string, start, len, buf);
4183 #else /* USDT2 */
4184 HOTSPOT_JNI_GETSTRINGUTFREGION_ENTRY(
4185 env, string, start, len, buf);
4186 #endif /* USDT2 */
4187 DT_VOID_RETURN_MARK(GetStringUTFRegion);
4188 oop s = JNIHandles::resolve_non_null(string);
4189 int s_len = java_lang_String::length(s);
4190 if (start < 0 || len < 0 || start + len > s_len) {
4191 THROW(vmSymbols::java_lang_StringIndexOutOfBoundsException());
4192 } else {
4193 //%note jni_7
4194 if (len > 0) {
4195 ResourceMark rm(THREAD);
4196 char *utf_region = java_lang_String::as_utf8_string(s, start, len);
4197 int utf_len = (int)strlen(utf_region);
4198 memcpy(buf, utf_region, utf_len);
4199 buf[utf_len] = 0;
4200 } else {
4201 // JDK null-terminates the buffer even in len is zero
4202 if (buf != NULL) {
4203 buf[0] = 0;
4204 }
4205 }
4206 }
4207 JNI_END
4208
4209
4210 JNI_ENTRY(void*, jni_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy))
4211 JNIWrapper("GetPrimitiveArrayCritical");
4212 #ifndef USDT2
4213 DTRACE_PROBE3(hotspot_jni, GetPrimitiveArrayCritical__entry, env, array, isCopy);
4214 #else /* USDT2 */
4215 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_ENTRY(
4216 env, array, (uintptr_t *) isCopy);
4217 #endif /* USDT2 */
4218 GC_locker::lock_critical(thread);
4219 if (isCopy != NULL) {
4220 *isCopy = JNI_FALSE;
4221 }
4222 oop a = JNIHandles::resolve_non_null(array);
4223 assert(a->is_array(), "just checking");
4224 BasicType type;
4225 if (a->is_objArray()) {
4226 type = T_OBJECT;
4227 } else {
4228 type = TypeArrayKlass::cast(a->klass())->element_type();
4229 }
4230 void* ret = arrayOop(a)->base(type);
4231 #ifndef USDT2
4232 DTRACE_PROBE1(hotspot_jni, GetPrimitiveArrayCritical__return, ret);
4233 #else /* USDT2 */
4234 HOTSPOT_JNI_GETPRIMITIVEARRAYCRITICAL_RETURN(
4235 ret);
4236 #endif /* USDT2 */
4237 return ret;
4238 JNI_END
4239
4240
4241 JNI_ENTRY(void, jni_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode))
4242 JNIWrapper("ReleasePrimitiveArrayCritical");
4243 #ifndef USDT2
4244 DTRACE_PROBE4(hotspot_jni, ReleasePrimitiveArrayCritical__entry, env, array, carray, mode);
4245 #else /* USDT2 */
4246 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_ENTRY(
4247 env, array, carray, mode);
4248 #endif /* USDT2 */
4249 // The array, carray and mode arguments are ignored
4250 GC_locker::unlock_critical(thread);
4251 #ifndef USDT2
4252 DTRACE_PROBE(hotspot_jni, ReleasePrimitiveArrayCritical__return);
4253 #else /* USDT2 */
4254 HOTSPOT_JNI_RELEASEPRIMITIVEARRAYCRITICAL_RETURN(
4255 );
4256 #endif /* USDT2 */
4257 JNI_END
4258
4259
4260 JNI_ENTRY(const jchar*, jni_GetStringCritical(JNIEnv *env, jstring string, jboolean *isCopy))
4261 JNIWrapper("GetStringCritical");
4262 #ifndef USDT2
4263 DTRACE_PROBE3(hotspot_jni, GetStringCritical__entry, env, string, isCopy);
4264 #else /* USDT2 */
4265 HOTSPOT_JNI_GETSTRINGCRITICAL_ENTRY(
4266 env, string, (uintptr_t *) isCopy);
4267 #endif /* USDT2 */
4268 GC_locker::lock_critical(thread);
4269 if (isCopy != NULL) {
4270 *isCopy = JNI_FALSE;
4271 }
4272 oop s = JNIHandles::resolve_non_null(string);
4273 int s_len = java_lang_String::length(s);
4274 typeArrayOop s_value = java_lang_String::value(s);
4275 int s_offset = java_lang_String::offset(s);
4276 const jchar* ret;
4277 if (s_len > 0) {
4278 ret = s_value->char_at_addr(s_offset);
4279 } else {
4280 ret = (jchar*) s_value->base(T_CHAR);
4281 }
4282 #ifndef USDT2
4283 DTRACE_PROBE1(hotspot_jni, GetStringCritical__return, ret);
4284 #else /* USDT2 */
4285 HOTSPOT_JNI_GETSTRINGCRITICAL_RETURN(
4286 (uint16_t *) ret);
4287 #endif /* USDT2 */
4288 return ret;
4289 JNI_END
4290
4291
4292 JNI_ENTRY(void, jni_ReleaseStringCritical(JNIEnv *env, jstring str, const jchar *chars))
4293 JNIWrapper("ReleaseStringCritical");
4294 #ifndef USDT2
4295 DTRACE_PROBE3(hotspot_jni, ReleaseStringCritical__entry, env, str, chars);
4296 #else /* USDT2 */
4297 HOTSPOT_JNI_RELEASESTRINGCRITICAL_ENTRY(
4298 env, str, (uint16_t *) chars);
4299 #endif /* USDT2 */
4300 // The str and chars arguments are ignored
4301 GC_locker::unlock_critical(thread);
4302 #ifndef USDT2
4303 DTRACE_PROBE(hotspot_jni, ReleaseStringCritical__return);
4304 #else /* USDT2 */
4305 HOTSPOT_JNI_RELEASESTRINGCRITICAL_RETURN(
4306 );
4307 #endif /* USDT2 */
4308 JNI_END
4309
4310
4311 JNI_ENTRY(jweak, jni_NewWeakGlobalRef(JNIEnv *env, jobject ref))
4312 JNIWrapper("jni_NewWeakGlobalRef");
4313 #ifndef USDT2
4314 DTRACE_PROBE2(hotspot_jni, NewWeakGlobalRef__entry, env, ref);
4315 #else /* USDT2 */
4316 HOTSPOT_JNI_NEWWEAKGLOBALREF_ENTRY(
4317 env, ref);
4318 #endif /* USDT2 */
4319 Handle ref_handle(thread, JNIHandles::resolve(ref));
4320 jweak ret = JNIHandles::make_weak_global(ref_handle);
4321 #ifndef USDT2
4322 DTRACE_PROBE1(hotspot_jni, NewWeakGlobalRef__return, ret);
4323 #else /* USDT2 */
4324 HOTSPOT_JNI_NEWWEAKGLOBALREF_RETURN(
4325 ret);
4326 #endif /* USDT2 */
4327 return ret;
4328 JNI_END
4329
4330 // Must be JNI_ENTRY (with HandleMark)
4331 JNI_ENTRY(void, jni_DeleteWeakGlobalRef(JNIEnv *env, jweak ref))
4332 JNIWrapper("jni_DeleteWeakGlobalRef");
4333 #ifndef USDT2
4334 DTRACE_PROBE2(hotspot_jni, DeleteWeakGlobalRef__entry, env, ref);
4335 #else /* USDT2 */
4336 HOTSPOT_JNI_DELETEWEAKGLOBALREF_ENTRY(
4337 env, ref);
4338 #endif /* USDT2 */
4339 JNIHandles::destroy_weak_global(ref);
4340 #ifndef USDT2
4341 DTRACE_PROBE(hotspot_jni, DeleteWeakGlobalRef__return);
4342 #else /* USDT2 */
4343 HOTSPOT_JNI_DELETEWEAKGLOBALREF_RETURN(
4344 );
4345 #endif /* USDT2 */
4346 JNI_END
4347
4348
4349 JNI_QUICK_ENTRY(jboolean, jni_ExceptionCheck(JNIEnv *env))
4350 JNIWrapper("jni_ExceptionCheck");
4351 #ifndef USDT2
4352 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__entry, env);
4353 #else /* USDT2 */
4354 HOTSPOT_JNI_EXCEPTIONCHECK_ENTRY(
4355 env);
4356 #endif /* USDT2 */
4357 jni_check_async_exceptions(thread);
4358 jboolean ret = (thread->has_pending_exception()) ? JNI_TRUE : JNI_FALSE;
4359 #ifndef USDT2
4360 DTRACE_PROBE1(hotspot_jni, ExceptionCheck__return, ret);
4361 #else /* USDT2 */
4362 HOTSPOT_JNI_EXCEPTIONCHECK_RETURN(
4363 ret);
4364 #endif /* USDT2 */
4365 return ret;
4366 JNI_END
4367
4368
4369 // Initialization state for three routines below relating to
4370 // java.nio.DirectBuffers
4371 static jint directBufferSupportInitializeStarted = 0;
4372 static volatile jint directBufferSupportInitializeEnded = 0;
4373 static volatile jint directBufferSupportInitializeFailed = 0;
4374 static jclass bufferClass = NULL;
4375 static jclass directBufferClass = NULL;
4376 static jclass directByteBufferClass = NULL;
4377 static jmethodID directByteBufferConstructor = NULL;
4378 static jfieldID directBufferAddressField = NULL;
4379 static jfieldID bufferCapacityField = NULL;
4380
4381 static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
4382 Handle loader; // null (bootstrap) loader
4383 Handle protection_domain; // null protection domain
4384
4385 TempNewSymbol sym = SymbolTable::new_symbol(name, CHECK_NULL);
4386 jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
4387
4388 if (TraceClassResolution && result != NULL) {
4389 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result)));
4390 }
4391 return result;
4392 }
4393
4394 // These lookups are done with the NULL (bootstrap) ClassLoader to
4395 // circumvent any security checks that would be done by jni_FindClass.
4396 JNI_ENTRY(bool, lookupDirectBufferClasses(JNIEnv* env))
4397 {
4398 if ((bufferClass = lookupOne(env, "java/nio/Buffer", thread)) == NULL) { return false; }
4399 if ((directBufferClass = lookupOne(env, "sun/nio/ch/DirectBuffer", thread)) == NULL) { return false; }
4400 if ((directByteBufferClass = lookupOne(env, "java/nio/DirectByteBuffer", thread)) == NULL) { return false; }
4401 return true;
4402 }
4403 JNI_END
4404
4405
4406 static bool initializeDirectBufferSupport(JNIEnv* env, JavaThread* thread) {
4407 if (directBufferSupportInitializeFailed) {
4408 return false;
4409 }
4410
4411 if (Atomic::cmpxchg(1, &directBufferSupportInitializeStarted, 0) == 0) {
4412 if (!lookupDirectBufferClasses(env)) {
4413 directBufferSupportInitializeFailed = 1;
4414 return false;
4415 }
4416
4417 // Make global references for these
4418 bufferClass = (jclass) env->NewGlobalRef(bufferClass);
4419 directBufferClass = (jclass) env->NewGlobalRef(directBufferClass);
4420 directByteBufferClass = (jclass) env->NewGlobalRef(directByteBufferClass);
4421
4422 // Get needed field and method IDs
4423 directByteBufferConstructor = env->GetMethodID(directByteBufferClass, "<init>", "(JI)V");
4424 directBufferAddressField = env->GetFieldID(bufferClass, "address", "J");
4425 bufferCapacityField = env->GetFieldID(bufferClass, "capacity", "I");
4426
4427 if ((directByteBufferConstructor == NULL) ||
4428 (directBufferAddressField == NULL) ||
4429 (bufferCapacityField == NULL)) {
4430 directBufferSupportInitializeFailed = 1;
4431 return false;
4432 }
4433
4434 directBufferSupportInitializeEnded = 1;
4435 } else {
4436 while (!directBufferSupportInitializeEnded && !directBufferSupportInitializeFailed) {
4437 // Set state as yield_all can call os:sleep. On Solaris, yield_all calls
4438 // os::sleep which requires the VM state transition. On other platforms, it
4439 // is not necessary. The following call to change the VM state is purposely
4440 // put inside the loop to avoid potential deadlock when multiple threads
4441 // try to call this method. See 6791815 for more details.
4442 ThreadInVMfromNative tivn(thread);
4443 os::yield_all();
4444 }
4445 }
4446
4447 return !directBufferSupportInitializeFailed;
4448 }
4449
4450 extern "C" jobject JNICALL jni_NewDirectByteBuffer(JNIEnv *env, void* address, jlong capacity)
4451 {
4452 // thread_from_jni_environment() will block if VM is gone.
4453 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4454
4455 JNIWrapper("jni_NewDirectByteBuffer");
4456 #ifndef USDT2
4457 DTRACE_PROBE3(hotspot_jni, NewDirectByteBuffer__entry, env, address, capacity);
4458 #else /* USDT2 */
4459 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_ENTRY(
4460 env, address, capacity);
4461 #endif /* USDT2 */
4462
4463 if (!directBufferSupportInitializeEnded) {
4464 if (!initializeDirectBufferSupport(env, thread)) {
4465 #ifndef USDT2
4466 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, NULL);
4467 #else /* USDT2 */
4468 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4469 NULL);
4470 #endif /* USDT2 */
4471 return NULL;
4472 }
4473 }
4474
4475 // Being paranoid about accidental sign extension on address
4476 jlong addr = (jlong) ((uintptr_t) address);
4477 // NOTE that package-private DirectByteBuffer constructor currently
4478 // takes int capacity
4479 jint cap = (jint) capacity;
4480 jobject ret = env->NewObject(directByteBufferClass, directByteBufferConstructor, addr, cap);
4481 #ifndef USDT2
4482 DTRACE_PROBE1(hotspot_jni, NewDirectByteBuffer__return, ret);
4483 #else /* USDT2 */
4484 HOTSPOT_JNI_NEWDIRECTBYTEBUFFER_RETURN(
4485 ret);
4486 #endif /* USDT2 */
4487 return ret;
4488 }
4489
4490 #ifndef USDT2
4491 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*);
4492 #else /* USDT2 */
4493 DT_RETURN_MARK_DECL(GetDirectBufferAddress, void*
4494 , HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_RETURN((void*) _ret_ref));
4495 #endif /* USDT2 */
4496
4497 extern "C" void* JNICALL jni_GetDirectBufferAddress(JNIEnv *env, jobject buf)
4498 {
4499 // thread_from_jni_environment() will block if VM is gone.
4500 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4501
4502 JNIWrapper("jni_GetDirectBufferAddress");
4503 #ifndef USDT2
4504 DTRACE_PROBE2(hotspot_jni, GetDirectBufferAddress__entry, env, buf);
4505 #else /* USDT2 */
4506 HOTSPOT_JNI_GETDIRECTBUFFERADDRESS_ENTRY(
4507 env, buf);
4508 #endif /* USDT2 */
4509 void* ret = NULL;
4510 DT_RETURN_MARK(GetDirectBufferAddress, void*, (const void*&)ret);
4511
4512 if (!directBufferSupportInitializeEnded) {
4513 if (!initializeDirectBufferSupport(env, thread)) {
4514 return 0;
4515 }
4516 }
4517
4518 if ((buf != NULL) && (!env->IsInstanceOf(buf, directBufferClass))) {
4519 return 0;
4520 }
4521
4522 ret = (void*)(intptr_t)env->GetLongField(buf, directBufferAddressField);
4523 return ret;
4524 }
4525
4526 #ifndef USDT2
4527 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong);
4528 #else /* USDT2 */
4529 DT_RETURN_MARK_DECL(GetDirectBufferCapacity, jlong
4530 , HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_RETURN(_ret_ref));
4531 #endif /* USDT2 */
4532
4533 extern "C" jlong JNICALL jni_GetDirectBufferCapacity(JNIEnv *env, jobject buf)
4534 {
4535 // thread_from_jni_environment() will block if VM is gone.
4536 JavaThread* thread = JavaThread::thread_from_jni_environment(env);
4537
4538 JNIWrapper("jni_GetDirectBufferCapacity");
4539 #ifndef USDT2
4540 DTRACE_PROBE2(hotspot_jni, GetDirectBufferCapacity__entry, env, buf);
4541 #else /* USDT2 */
4542 HOTSPOT_JNI_GETDIRECTBUFFERCAPACITY_ENTRY(
4543 env, buf);
4544 #endif /* USDT2 */
4545 jlong ret = -1;
4546 DT_RETURN_MARK(GetDirectBufferCapacity, jlong, (const jlong&)ret);
4547
4548 if (!directBufferSupportInitializeEnded) {
4549 if (!initializeDirectBufferSupport(env, thread)) {
4550 ret = 0;
4551 return ret;
4552 }
4553 }
4554
4555 if (buf == NULL) {
4556 return -1;
4557 }
4558
4559 if (!env->IsInstanceOf(buf, directBufferClass)) {
4560 return -1;
4561 }
4562
4563 // NOTE that capacity is currently an int in the implementation
4564 ret = env->GetIntField(buf, bufferCapacityField);
4565 return ret;
4566 }
4567
4568
4569 JNI_LEAF(jint, jni_GetVersion(JNIEnv *env))
4570 JNIWrapper("GetVersion");
4571 #ifndef USDT2
4572 DTRACE_PROBE1(hotspot_jni, GetVersion__entry, env);
4573 #else /* USDT2 */
4574 HOTSPOT_JNI_GETVERSION_ENTRY(
4575 env);
4576 #endif /* USDT2 */
4577 #ifndef USDT2
4578 DTRACE_PROBE1(hotspot_jni, GetVersion__return, CurrentVersion);
4579 #else /* USDT2 */
4580 HOTSPOT_JNI_GETVERSION_RETURN(
4581 CurrentVersion);
4582 #endif /* USDT2 */
4583 return CurrentVersion;
4584 JNI_END
4585
4586 extern struct JavaVM_ main_vm;
4587
4588 JNI_LEAF(jint, jni_GetJavaVM(JNIEnv *env, JavaVM **vm))
4589 JNIWrapper("jni_GetJavaVM");
4590 #ifndef USDT2
4591 DTRACE_PROBE2(hotspot_jni, GetJavaVM__entry, env, vm);
4592 #else /* USDT2 */
4593 HOTSPOT_JNI_GETJAVAVM_ENTRY(
4594 env, (void **) vm);
4595 #endif /* USDT2 */
4596 *vm = (JavaVM *)(&main_vm);
4597 #ifndef USDT2
4598 DTRACE_PROBE1(hotspot_jni, GetJavaVM__return, JNI_OK);
4599 #else /* USDT2 */
4600 HOTSPOT_JNI_GETJAVAVM_RETURN(
4601 JNI_OK);
4602 #endif /* USDT2 */
4603 return JNI_OK;
4604 JNI_END
4605
4606 // Structure containing all jni functions
4607 struct JNINativeInterface_ jni_NativeInterface = {
4608 NULL,
4609 NULL,
4610 NULL,
4611
4612 NULL,
4613
4614 jni_GetVersion,
4615
4616 jni_DefineClass,
4617 jni_FindClass,
4618
4619 jni_FromReflectedMethod,
4620 jni_FromReflectedField,
4621
4622 jni_ToReflectedMethod,
4623
4624 jni_GetSuperclass,
4625 jni_IsAssignableFrom,
4626
4627 jni_ToReflectedField,
4628
4629 jni_Throw,
4630 jni_ThrowNew,
4631 jni_ExceptionOccurred,
4632 jni_ExceptionDescribe,
4633 jni_ExceptionClear,
4634 jni_FatalError,
4635
4636 jni_PushLocalFrame,
4637 jni_PopLocalFrame,
4638
4639 jni_NewGlobalRef,
4640 jni_DeleteGlobalRef,
4641 jni_DeleteLocalRef,
4642 jni_IsSameObject,
4643
4644 jni_NewLocalRef,
4645 jni_EnsureLocalCapacity,
4646
4647 jni_AllocObject,
4648 jni_NewObject,
4649 jni_NewObjectV,
4650 jni_NewObjectA,
4651
4652 jni_GetObjectClass,
4653 jni_IsInstanceOf,
4654
4655 jni_GetMethodID,
4656
4657 jni_CallObjectMethod,
4658 jni_CallObjectMethodV,
4659 jni_CallObjectMethodA,
4660 jni_CallBooleanMethod,
4661 jni_CallBooleanMethodV,
4662 jni_CallBooleanMethodA,
4663 jni_CallByteMethod,
4664 jni_CallByteMethodV,
4665 jni_CallByteMethodA,
4666 jni_CallCharMethod,
4667 jni_CallCharMethodV,
4668 jni_CallCharMethodA,
4669 jni_CallShortMethod,
4670 jni_CallShortMethodV,
4671 jni_CallShortMethodA,
4672 jni_CallIntMethod,
4673 jni_CallIntMethodV,
4674 jni_CallIntMethodA,
4675 jni_CallLongMethod,
4676 jni_CallLongMethodV,
4677 jni_CallLongMethodA,
4678 jni_CallFloatMethod,
4679 jni_CallFloatMethodV,
4680 jni_CallFloatMethodA,
4681 jni_CallDoubleMethod,
4682 jni_CallDoubleMethodV,
4683 jni_CallDoubleMethodA,
4684 jni_CallVoidMethod,
4685 jni_CallVoidMethodV,
4686 jni_CallVoidMethodA,
4687
4688 jni_CallNonvirtualObjectMethod,
4689 jni_CallNonvirtualObjectMethodV,
4690 jni_CallNonvirtualObjectMethodA,
4691 jni_CallNonvirtualBooleanMethod,
4692 jni_CallNonvirtualBooleanMethodV,
4693 jni_CallNonvirtualBooleanMethodA,
4694 jni_CallNonvirtualByteMethod,
4695 jni_CallNonvirtualByteMethodV,
4696 jni_CallNonvirtualByteMethodA,
4697 jni_CallNonvirtualCharMethod,
4698 jni_CallNonvirtualCharMethodV,
4699 jni_CallNonvirtualCharMethodA,
4700 jni_CallNonvirtualShortMethod,
4701 jni_CallNonvirtualShortMethodV,
4702 jni_CallNonvirtualShortMethodA,
4703 jni_CallNonvirtualIntMethod,
4704 jni_CallNonvirtualIntMethodV,
4705 jni_CallNonvirtualIntMethodA,
4706 jni_CallNonvirtualLongMethod,
4707 jni_CallNonvirtualLongMethodV,
4708 jni_CallNonvirtualLongMethodA,
4709 jni_CallNonvirtualFloatMethod,
4710 jni_CallNonvirtualFloatMethodV,
4711 jni_CallNonvirtualFloatMethodA,
4712 jni_CallNonvirtualDoubleMethod,
4713 jni_CallNonvirtualDoubleMethodV,
4714 jni_CallNonvirtualDoubleMethodA,
4715 jni_CallNonvirtualVoidMethod,
4716 jni_CallNonvirtualVoidMethodV,
4717 jni_CallNonvirtualVoidMethodA,
4718
4719 jni_GetFieldID,
4720
4721 jni_GetObjectField,
4722 jni_GetBooleanField,
4723 jni_GetByteField,
4724 jni_GetCharField,
4725 jni_GetShortField,
4726 jni_GetIntField,
4727 jni_GetLongField,
4728 jni_GetFloatField,
4729 jni_GetDoubleField,
4730
4731 jni_SetObjectField,
4732 jni_SetBooleanField,
4733 jni_SetByteField,
4734 jni_SetCharField,
4735 jni_SetShortField,
4736 jni_SetIntField,
4737 jni_SetLongField,
4738 jni_SetFloatField,
4739 jni_SetDoubleField,
4740
4741 jni_GetStaticMethodID,
4742
4743 jni_CallStaticObjectMethod,
4744 jni_CallStaticObjectMethodV,
4745 jni_CallStaticObjectMethodA,
4746 jni_CallStaticBooleanMethod,
4747 jni_CallStaticBooleanMethodV,
4748 jni_CallStaticBooleanMethodA,
4749 jni_CallStaticByteMethod,
4750 jni_CallStaticByteMethodV,
4751 jni_CallStaticByteMethodA,
4752 jni_CallStaticCharMethod,
4753 jni_CallStaticCharMethodV,
4754 jni_CallStaticCharMethodA,
4755 jni_CallStaticShortMethod,
4756 jni_CallStaticShortMethodV,
4757 jni_CallStaticShortMethodA,
4758 jni_CallStaticIntMethod,
4759 jni_CallStaticIntMethodV,
4760 jni_CallStaticIntMethodA,
4761 jni_CallStaticLongMethod,
4762 jni_CallStaticLongMethodV,
4763 jni_CallStaticLongMethodA,
4764 jni_CallStaticFloatMethod,
4765 jni_CallStaticFloatMethodV,
4766 jni_CallStaticFloatMethodA,
4767 jni_CallStaticDoubleMethod,
4768 jni_CallStaticDoubleMethodV,
4769 jni_CallStaticDoubleMethodA,
4770 jni_CallStaticVoidMethod,
4771 jni_CallStaticVoidMethodV,
4772 jni_CallStaticVoidMethodA,
4773
4774 jni_GetStaticFieldID,
4775
4776 jni_GetStaticObjectField,
4777 jni_GetStaticBooleanField,
4778 jni_GetStaticByteField,
4779 jni_GetStaticCharField,
4780 jni_GetStaticShortField,
4781 jni_GetStaticIntField,
4782 jni_GetStaticLongField,
4783 jni_GetStaticFloatField,
4784 jni_GetStaticDoubleField,
4785
4786 jni_SetStaticObjectField,
4787 jni_SetStaticBooleanField,
4788 jni_SetStaticByteField,
4789 jni_SetStaticCharField,
4790 jni_SetStaticShortField,
4791 jni_SetStaticIntField,
4792 jni_SetStaticLongField,
4793 jni_SetStaticFloatField,
4794 jni_SetStaticDoubleField,
4795
4796 jni_NewString,
4797 jni_GetStringLength,
4798 jni_GetStringChars,
4799 jni_ReleaseStringChars,
4800
4801 jni_NewStringUTF,
4802 jni_GetStringUTFLength,
4803 jni_GetStringUTFChars,
4804 jni_ReleaseStringUTFChars,
4805
4806 jni_GetArrayLength,
4807
4808 jni_NewObjectArray,
4809 jni_GetObjectArrayElement,
4810 jni_SetObjectArrayElement,
4811
4812 jni_NewBooleanArray,
4813 jni_NewByteArray,
4814 jni_NewCharArray,
4815 jni_NewShortArray,
4816 jni_NewIntArray,
4817 jni_NewLongArray,
4818 jni_NewFloatArray,
4819 jni_NewDoubleArray,
4820
4821 jni_GetBooleanArrayElements,
4822 jni_GetByteArrayElements,
4823 jni_GetCharArrayElements,
4824 jni_GetShortArrayElements,
4825 jni_GetIntArrayElements,
4826 jni_GetLongArrayElements,
4827 jni_GetFloatArrayElements,
4828 jni_GetDoubleArrayElements,
4829
4830 jni_ReleaseBooleanArrayElements,
4831 jni_ReleaseByteArrayElements,
4832 jni_ReleaseCharArrayElements,
4833 jni_ReleaseShortArrayElements,
4834 jni_ReleaseIntArrayElements,
4835 jni_ReleaseLongArrayElements,
4836 jni_ReleaseFloatArrayElements,
4837 jni_ReleaseDoubleArrayElements,
4838
4839 jni_GetBooleanArrayRegion,
4840 jni_GetByteArrayRegion,
4841 jni_GetCharArrayRegion,
4842 jni_GetShortArrayRegion,
4843 jni_GetIntArrayRegion,
4844 jni_GetLongArrayRegion,
4845 jni_GetFloatArrayRegion,
4846 jni_GetDoubleArrayRegion,
4847
4848 jni_SetBooleanArrayRegion,
4849 jni_SetByteArrayRegion,
4850 jni_SetCharArrayRegion,
4851 jni_SetShortArrayRegion,
4852 jni_SetIntArrayRegion,
4853 jni_SetLongArrayRegion,
4854 jni_SetFloatArrayRegion,
4855 jni_SetDoubleArrayRegion,
4856
4857 jni_RegisterNatives,
4858 jni_UnregisterNatives,
4859
4860 jni_MonitorEnter,
4861 jni_MonitorExit,
4862
4863 jni_GetJavaVM,
4864
4865 jni_GetStringRegion,
4866 jni_GetStringUTFRegion,
4867
4868 jni_GetPrimitiveArrayCritical,
4869 jni_ReleasePrimitiveArrayCritical,
4870
4871 jni_GetStringCritical,
4872 jni_ReleaseStringCritical,
4873
4874 jni_NewWeakGlobalRef,
4875 jni_DeleteWeakGlobalRef,
4876
4877 jni_ExceptionCheck,
4878
4879 jni_NewDirectByteBuffer,
4880 jni_GetDirectBufferAddress,
4881 jni_GetDirectBufferCapacity,
4882
4883 // New 1_6 features
4884
4885 jni_GetObjectRefType
4886 };
4887
4888
4889 // For jvmti use to modify jni function table.
4890 // Java threads in native contiues to run until it is transitioned
4891 // to VM at safepoint. Before the transition or before it is blocked
4892 // for safepoint it may access jni function table. VM could crash if
4893 // any java thread access the jni function table in the middle of memcpy.
4894 // To avoid this each function pointers are copied automically.
4895 void copy_jni_function_table(const struct JNINativeInterface_ *new_jni_NativeInterface) {
4896 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
4897 intptr_t *a = (intptr_t *) jni_functions();
4898 intptr_t *b = (intptr_t *) new_jni_NativeInterface;
4899 for (uint i=0; i < sizeof(struct JNINativeInterface_)/sizeof(void *); i++) {
4900 Atomic::store_ptr(*b++, a++);
4901 }
4902 }
4903
4904 void quicken_jni_functions() {
4905 // Replace Get<Primitive>Field with fast versions
4906 if (UseFastJNIAccessors && !JvmtiExport::can_post_field_access()
4907 && !VerifyJNIFields && !TraceJNICalls && !CountJNICalls && !CheckJNICalls
4908 #if defined(_WINDOWS) && defined(IA32) && defined(COMPILER2)
4909 // windows x86 currently needs SEH wrapper and the gain of the fast
4910 // versions currently isn't certain for server vm on uniprocessor.
4911 && os::is_MP()
4912 #endif
4913 ) {
4914 address func;
4915 func = JNI_FastGetField::generate_fast_get_boolean_field();
4916 if (func != (address)-1) {
4917 jni_NativeInterface.GetBooleanField = (GetBooleanField_t)func;
4918 }
4919 func = JNI_FastGetField::generate_fast_get_byte_field();
4920 if (func != (address)-1) {
4921 jni_NativeInterface.GetByteField = (GetByteField_t)func;
4922 }
4923 func = JNI_FastGetField::generate_fast_get_char_field();
4924 if (func != (address)-1) {
4925 jni_NativeInterface.GetCharField = (GetCharField_t)func;
4926 }
4927 func = JNI_FastGetField::generate_fast_get_short_field();
4928 if (func != (address)-1) {
4929 jni_NativeInterface.GetShortField = (GetShortField_t)func;
4930 }
4931 func = JNI_FastGetField::generate_fast_get_int_field();
4932 if (func != (address)-1) {
4933 jni_NativeInterface.GetIntField = (GetIntField_t)func;
4934 }
4935 func = JNI_FastGetField::generate_fast_get_long_field();
4936 if (func != (address)-1) {
4937 jni_NativeInterface.GetLongField = (GetLongField_t)func;
4938 }
4939 func = JNI_FastGetField::generate_fast_get_float_field();
4940 if (func != (address)-1) {
4941 jni_NativeInterface.GetFloatField = (GetFloatField_t)func;
4942 }
4943 func = JNI_FastGetField::generate_fast_get_double_field();
4944 if (func != (address)-1) {
4945 jni_NativeInterface.GetDoubleField = (GetDoubleField_t)func;
4946 }
4947 }
4948 }
4949
4950 // Returns the function structure
4951 struct JNINativeInterface_* jni_functions() {
4952 #if INCLUDE_JNI_CHECK
4953 if (CheckJNICalls) return jni_functions_check();
4954 #endif // INCLUDE_JNI_CHECK
4955 return &jni_NativeInterface;
4956 }
4957
4958 // Returns the function structure
4959 struct JNINativeInterface_* jni_functions_nocheck() {
4960 return &jni_NativeInterface;
4961 }
4962
4963
4964 // Invocation API
4965
4966
4967 // Forward declaration
4968 extern const struct JNIInvokeInterface_ jni_InvokeInterface;
4969
4970 // Global invocation API vars
4971 volatile jint vm_created = 0;
4972 // Indicate whether it is safe to recreate VM
4973 volatile jint safe_to_recreate_vm = 1;
4974 struct JavaVM_ main_vm = {&jni_InvokeInterface};
4975
4976
4977 #define JAVASTACKSIZE (400 * 1024) /* Default size of a thread java stack */
4978 enum { VERIFY_NONE, VERIFY_REMOTE, VERIFY_ALL };
4979
4980 #ifndef USDT2
4981 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, void*);
4982 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint);
4983 #else /* USDT2 */
4984 DT_RETURN_MARK_DECL(GetDefaultJavaVMInitArgs, jint
4985 , HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_RETURN(_ret_ref));
4986 #endif /* USDT2 */
4987
4988 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
4989 #ifndef USDT2
4990 HS_DTRACE_PROBE1(hotspot_jni, GetDefaultJavaVMInitArgs__entry, args_);
4991 #else /* USDT2 */
4992 HOTSPOT_JNI_GETDEFAULTJAVAVMINITARGS_ENTRY(
4993 args_);
4994 #endif /* USDT2 */
4995 JDK1_1InitArgs *args = (JDK1_1InitArgs *)args_;
4996 jint ret = JNI_ERR;
4997 DT_RETURN_MARK(GetDefaultJavaVMInitArgs, jint, (const jint&)ret);
4998
4999 if (Threads::is_supported_jni_version(args->version)) {
5000 ret = JNI_OK;
5001 }
5002 // 1.1 style no longer supported in hotspot.
5003 // According the JNI spec, we should update args->version on return.
5004 // We also use the structure to communicate with launcher about default
5005 // stack size.
5006 if (args->version == JNI_VERSION_1_1) {
5007 args->version = JNI_VERSION_1_2;
5008 // javaStackSize is int in arguments structure
5009 assert(jlong(ThreadStackSize) * K < INT_MAX, "integer overflow");
5010 args->javaStackSize = (jint)(ThreadStackSize * K);
5011 }
5012 return ret;
5013 }
5014
5015 #ifndef PRODUCT
5016
5017 #include "gc_interface/collectedHeap.hpp"
5018 #include "utilities/quickSort.hpp"
5019 #if INCLUDE_VM_STRUCTS
5020 #include "runtime/vmStructs.hpp"
5021 #endif
5022
5023 #define run_unit_test(unit_test_function_call) \
5024 tty->print_cr("Running test: " #unit_test_function_call); \
5025 unit_test_function_call
5026
5027 void execute_internal_vm_tests() {
5028 if (ExecuteInternalVMTests) {
5029 tty->print_cr("Running internal VM tests");
5030 run_unit_test(GlobalDefinitions::test_globals());
5031 run_unit_test(arrayOopDesc::test_max_array_length());
5032 run_unit_test(CollectedHeap::test_is_in());
5033 run_unit_test(QuickSort::test_quick_sort());
5034 run_unit_test(AltHashing::test_alt_hash());
5035 #if INCLUDE_VM_STRUCTS
5036 run_unit_test(VMStructs::test());
5037 #endif
5038 tty->print_cr("All internal VM tests passed");
5039 }
5040 }
5041
5042 #undef run_unit_test
5043
5044 #endif
5045
5046 #ifndef USDT2
5047 HS_DTRACE_PROBE_DECL3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5048 DT_RETURN_MARK_DECL(CreateJavaVM, jint);
5049 #else /* USDT2 */
5050 DT_RETURN_MARK_DECL(CreateJavaVM, jint
5051 , HOTSPOT_JNI_CREATEJAVAVM_RETURN(_ret_ref));
5052 #endif /* USDT2 */
5053
5054 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_CreateJavaVM(JavaVM **vm, void **penv, void *args) {
5055 #ifndef USDT2
5056 HS_DTRACE_PROBE3(hotspot_jni, CreateJavaVM__entry, vm, penv, args);
5057 #else /* USDT2 */
5058 HOTSPOT_JNI_CREATEJAVAVM_ENTRY(
5059 (void **) vm, penv, args);
5060 #endif /* USDT2 */
5061
5062 jint result = JNI_ERR;
5063 DT_RETURN_MARK(CreateJavaVM, jint, (const jint&)result);
5064
5065 // We're about to use Atomic::xchg for synchronization. Some Zero
5066 // platforms use the GCC builtin __sync_lock_test_and_set for this,
5067 // but __sync_lock_test_and_set is not guaranteed to do what we want
5068 // on all architectures. So we check it works before relying on it.
5069 #if defined(ZERO) && defined(ASSERT)
5070 {
5071 jint a = 0xcafebabe;
5072 jint b = Atomic::xchg(0xdeadbeef, &a);
5073 void *c = &a;
5074 void *d = Atomic::xchg_ptr(&b, &c);
5075 assert(a == (jint) 0xdeadbeef && b == (jint) 0xcafebabe, "Atomic::xchg() works");
5076 assert(c == &b && d == &a, "Atomic::xchg_ptr() works");
5077 }
5078 #endif // ZERO && ASSERT
5079
5080 // At the moment it's only possible to have one Java VM,
5081 // since some of the runtime state is in global variables.
5082
5083 // We cannot use our mutex locks here, since they only work on
5084 // Threads. We do an atomic compare and exchange to ensure only
5085 // one thread can call this method at a time
5086
5087 // We use Atomic::xchg rather than Atomic::add/dec since on some platforms
5088 // the add/dec implementations are dependent on whether we are running
5089 // on a multiprocessor, and at this stage of initialization the os::is_MP
5090 // function used to determine this will always return false. Atomic::xchg
5091 // does not have this problem.
5092 if (Atomic::xchg(1, &vm_created) == 1) {
5093 return JNI_ERR; // already created, or create attempt in progress
5094 }
5095 if (Atomic::xchg(0, &safe_to_recreate_vm) == 0) {
5096 return JNI_ERR; // someone tried and failed and retry not allowed.
5097 }
5098
5099 assert(vm_created == 1, "vm_created is true during the creation");
5100
5101 /**
5102 * Certain errors during initialization are recoverable and do not
5103 * prevent this method from being called again at a later time
5104 * (perhaps with different arguments). However, at a certain
5105 * point during initialization if an error occurs we cannot allow
5106 * this function to be called again (or it will crash). In those
5107 * situations, the 'canTryAgain' flag is set to false, which atomically
5108 * sets safe_to_recreate_vm to 1, such that any new call to
5109 * JNI_CreateJavaVM will immediately fail using the above logic.
5110 */
5111 bool can_try_again = true;
5112
5113 result = Threads::create_vm((JavaVMInitArgs*) args, &can_try_again);
5114 if (result == JNI_OK) {
5115 JavaThread *thread = JavaThread::current();
5116 /* thread is thread_in_vm here */
5117 *vm = (JavaVM *)(&main_vm);
5118 *(JNIEnv**)penv = thread->jni_environment();
5119
5120 // Tracks the time application was running before GC
5121 RuntimeService::record_application_start();
5122
5123 // Notify JVMTI
5124 if (JvmtiExport::should_post_thread_life()) {
5125 JvmtiExport::post_thread_start(thread);
5126 }
5127
5128 EVENT_BEGIN(TraceEventThreadStart, event);
5129 EVENT_COMMIT(event,
5130 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5131
5132 // Check if we should compile all classes on bootclasspath
5133 NOT_PRODUCT(if (CompileTheWorld) ClassLoader::compile_the_world();)
5134 NOT_PRODUCT(if (ReplayCompiles) ciReplay::replay(thread);)
5135 // Since this is not a JVM_ENTRY we have to set the thread state manually before leaving.
5136 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5137 } else {
5138 if (can_try_again) {
5139 // reset safe_to_recreate_vm to 1 so that retrial would be possible
5140 safe_to_recreate_vm = 1;
5141 }
5142
5143 // Creation failed. We must reset vm_created
5144 *vm = 0;
5145 *(JNIEnv**)penv = 0;
5146 // reset vm_created last to avoid race condition. Use OrderAccess to
5147 // control both compiler and architectural-based reordering.
5148 OrderAccess::release_store(&vm_created, 0);
5149 }
5150
5151 NOT_PRODUCT(test_error_handler(ErrorHandlerTest));
5152 NOT_PRODUCT(execute_internal_vm_tests());
5153 return result;
5154 }
5155
5156 #ifndef USDT2
5157 HS_DTRACE_PROBE_DECL3(hotspot_jni, GetCreatedJavaVMs__entry, \
5158 JavaVM**, jsize, jsize*);
5159 HS_DTRACE_PROBE_DECL1(hotspot_jni, GetCreatedJavaVMs__return, jint);
5160 #endif /* !USDT2 */
5161
5162 _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetCreatedJavaVMs(JavaVM **vm_buf, jsize bufLen, jsize *numVMs) {
5163 // See bug 4367188, the wrapper can sometimes cause VM crashes
5164 // JNIWrapper("GetCreatedJavaVMs");
5165 #ifndef USDT2
5166 HS_DTRACE_PROBE3(hotspot_jni, GetCreatedJavaVMs__entry, \
5167 vm_buf, bufLen, numVMs);
5168 #else /* USDT2 */
5169 HOTSPOT_JNI_GETCREATEDJAVAVMS_ENTRY(
5170 (void **) vm_buf, bufLen, (uintptr_t *) numVMs);
5171 #endif /* USDT2 */
5172 if (vm_created) {
5173 if (numVMs != NULL) *numVMs = 1;
5174 if (bufLen > 0) *vm_buf = (JavaVM *)(&main_vm);
5175 } else {
5176 if (numVMs != NULL) *numVMs = 0;
5177 }
5178 #ifndef USDT2
5179 HS_DTRACE_PROBE1(hotspot_jni, GetCreatedJavaVMs__return, JNI_OK);
5180 #else /* USDT2 */
5181 HOTSPOT_JNI_GETCREATEDJAVAVMS_RETURN(
5182 JNI_OK);
5183 #endif /* USDT2 */
5184 return JNI_OK;
5185 }
5186
5187 extern "C" {
5188
5189 #ifndef USDT2
5190 DT_RETURN_MARK_DECL(DestroyJavaVM, jint);
5191 #else /* USDT2 */
5192 DT_RETURN_MARK_DECL(DestroyJavaVM, jint
5193 , HOTSPOT_JNI_DESTROYJAVAVM_RETURN(_ret_ref));
5194 #endif /* USDT2 */
5195
5196 jint JNICALL jni_DestroyJavaVM(JavaVM *vm) {
5197 #ifndef USDT2
5198 DTRACE_PROBE1(hotspot_jni, DestroyJavaVM__entry, vm);
5199 #else /* USDT2 */
5200 HOTSPOT_JNI_DESTROYJAVAVM_ENTRY(
5201 vm);
5202 #endif /* USDT2 */
5203 jint res = JNI_ERR;
5204 DT_RETURN_MARK(DestroyJavaVM, jint, (const jint&)res);
5205
5206 if (!vm_created) {
5207 res = JNI_ERR;
5208 return res;
5209 }
5210
5211 JNIWrapper("DestroyJavaVM");
5212 JNIEnv *env;
5213 JavaVMAttachArgs destroyargs;
5214 destroyargs.version = CurrentVersion;
5215 destroyargs.name = (char *)"DestroyJavaVM";
5216 destroyargs.group = NULL;
5217 res = vm->AttachCurrentThread((void **)&env, (void *)&destroyargs);
5218 if (res != JNI_OK) {
5219 return res;
5220 }
5221
5222 // Since this is not a JVM_ENTRY we have to set the thread state manually before entering.
5223 JavaThread* thread = JavaThread::current();
5224 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5225 if (Threads::destroy_vm()) {
5226 // Should not change thread state, VM is gone
5227 vm_created = false;
5228 res = JNI_OK;
5229 return res;
5230 } else {
5231 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5232 res = JNI_ERR;
5233 return res;
5234 }
5235 }
5236
5237
5238 static jint attach_current_thread(JavaVM *vm, void **penv, void *_args, bool daemon) {
5239 JavaVMAttachArgs *args = (JavaVMAttachArgs *) _args;
5240
5241 // Check below commented out from JDK1.2fcs as well
5242 /*
5243 if (args && (args->version != JNI_VERSION_1_1 || args->version != JNI_VERSION_1_2)) {
5244 return JNI_EVERSION;
5245 }
5246 */
5247
5248 Thread* t = ThreadLocalStorage::get_thread_slow();
5249 if (t != NULL) {
5250 // If the thread has been attached this operation is a no-op
5251 *(JNIEnv**)penv = ((JavaThread*) t)->jni_environment();
5252 return JNI_OK;
5253 }
5254
5255 // Create a thread and mark it as attaching so it will be skipped by the
5256 // ThreadsListEnumerator - see CR 6404306
5257 JavaThread* thread = new JavaThread(true);
5258
5259 // Set correct safepoint info. The thread is going to call into Java when
5260 // initializing the Java level thread object. Hence, the correct state must
5261 // be set in order for the Safepoint code to deal with it correctly.
5262 thread->set_thread_state(_thread_in_vm);
5263 // Must do this before initialize_thread_local_storage
5264 thread->record_stack_base_and_size();
5265
5266 thread->initialize_thread_local_storage();
5267
5268 if (!os::create_attached_thread(thread)) {
5269 delete thread;
5270 return JNI_ERR;
5271 }
5272 // Enable stack overflow checks
5273 thread->create_stack_guard_pages();
5274
5275 thread->initialize_tlab();
5276
5277 thread->cache_global_variables();
5278
5279 // Crucial that we do not have a safepoint check for this thread, since it has
5280 // not been added to the Thread list yet.
5281 { Threads_lock->lock_without_safepoint_check();
5282 // This must be inside this lock in order to get FullGCALot to work properly, i.e., to
5283 // avoid this thread trying to do a GC before it is added to the thread-list
5284 thread->set_active_handles(JNIHandleBlock::allocate_block());
5285 Threads::add(thread, daemon);
5286 Threads_lock->unlock();
5287 }
5288 // Create thread group and name info from attach arguments
5289 oop group = NULL;
5290 char* thread_name = NULL;
5291 if (args != NULL && Threads::is_supported_jni_version(args->version)) {
5292 group = JNIHandles::resolve(args->group);
5293 thread_name = args->name; // may be NULL
5294 }
5295 if (group == NULL) group = Universe::main_thread_group();
5296
5297 // Create Java level thread object and attach it to this thread
5298 bool attach_failed = false;
5299 {
5300 EXCEPTION_MARK;
5301 HandleMark hm(THREAD);
5302 Handle thread_group(THREAD, group);
5303 thread->allocate_threadObj(thread_group, thread_name, daemon, THREAD);
5304 if (HAS_PENDING_EXCEPTION) {
5305 CLEAR_PENDING_EXCEPTION;
5306 // cleanup outside the handle mark.
5307 attach_failed = true;
5308 }
5309 }
5310
5311 if (attach_failed) {
5312 // Added missing cleanup
5313 thread->cleanup_failed_attach_current_thread();
5314 return JNI_ERR;
5315 }
5316
5317 // mark the thread as no longer attaching
5318 // this uses a fence to push the change through so we don't have
5319 // to regrab the threads_lock
5320 thread->set_done_attaching_via_jni();
5321
5322 // Set java thread status.
5323 java_lang_Thread::set_thread_status(thread->threadObj(),
5324 java_lang_Thread::RUNNABLE);
5325
5326 // Notify the debugger
5327 if (JvmtiExport::should_post_thread_life()) {
5328 JvmtiExport::post_thread_start(thread);
5329 }
5330
5331 EVENT_BEGIN(TraceEventThreadStart, event);
5332 EVENT_COMMIT(event,
5333 EVENT_SET(event, javalangthread, java_lang_Thread::thread_id(thread->threadObj())));
5334
5335 *(JNIEnv**)penv = thread->jni_environment();
5336
5337 // Now leaving the VM, so change thread_state. This is normally automatically taken care
5338 // of in the JVM_ENTRY. But in this situation we have to do it manually. Notice, that by
5339 // using ThreadStateTransition::transition, we do a callback to the safepoint code if
5340 // needed.
5341
5342 ThreadStateTransition::transition_and_fence(thread, _thread_in_vm, _thread_in_native);
5343
5344 // Perform any platform dependent FPU setup
5345 os::setup_fpu();
5346
5347 return JNI_OK;
5348 }
5349
5350
5351 jint JNICALL jni_AttachCurrentThread(JavaVM *vm, void **penv, void *_args) {
5352 #ifndef USDT2
5353 DTRACE_PROBE3(hotspot_jni, AttachCurrentThread__entry, vm, penv, _args);
5354 #else /* USDT2 */
5355 HOTSPOT_JNI_ATTACHCURRENTTHREAD_ENTRY(
5356 vm, penv, _args);
5357 #endif /* USDT2 */
5358 if (!vm_created) {
5359 #ifndef USDT2
5360 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, JNI_ERR);
5361 #else /* USDT2 */
5362 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5363 (uint32_t) JNI_ERR);
5364 #endif /* USDT2 */
5365 return JNI_ERR;
5366 }
5367
5368 JNIWrapper("AttachCurrentThread");
5369 jint ret = attach_current_thread(vm, penv, _args, false);
5370 #ifndef USDT2
5371 DTRACE_PROBE1(hotspot_jni, AttachCurrentThread__return, ret);
5372 #else /* USDT2 */
5373 HOTSPOT_JNI_ATTACHCURRENTTHREAD_RETURN(
5374 ret);
5375 #endif /* USDT2 */
5376 return ret;
5377 }
5378
5379
5380 jint JNICALL jni_DetachCurrentThread(JavaVM *vm) {
5381 #ifndef USDT2
5382 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__entry, vm);
5383 #else /* USDT2 */
5384 HOTSPOT_JNI_DETACHCURRENTTHREAD_ENTRY(
5385 vm);
5386 #endif /* USDT2 */
5387 VM_Exit::block_if_vm_exited();
5388
5389 JNIWrapper("DetachCurrentThread");
5390
5391 // If the thread has been deattacted the operations is a no-op
5392 if (ThreadLocalStorage::thread() == NULL) {
5393 #ifndef USDT2
5394 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5395 #else /* USDT2 */
5396 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5397 JNI_OK);
5398 #endif /* USDT2 */
5399 return JNI_OK;
5400 }
5401
5402 JavaThread* thread = JavaThread::current();
5403 if (thread->has_last_Java_frame()) {
5404 #ifndef USDT2
5405 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_ERR);
5406 #else /* USDT2 */
5407 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5408 (uint32_t) JNI_ERR);
5409 #endif /* USDT2 */
5410 // Can't detach a thread that's running java, that can't work.
5411 return JNI_ERR;
5412 }
5413
5414 // Safepoint support. Have to do call-back to safepoint code, if in the
5415 // middel of a safepoint operation
5416 ThreadStateTransition::transition_from_native(thread, _thread_in_vm);
5417
5418 // XXX: Note that JavaThread::exit() call below removes the guards on the
5419 // stack pages set up via enable_stack_{red,yellow}_zone() calls
5420 // above in jni_AttachCurrentThread. Unfortunately, while the setting
5421 // of the guards is visible in jni_AttachCurrentThread above,
5422 // the removal of the guards is buried below in JavaThread::exit()
5423 // here. The abstraction should be more symmetrically either exposed
5424 // or hidden (e.g. it could probably be hidden in the same
5425 // (platform-dependent) methods where we do alternate stack
5426 // maintenance work?)
5427 thread->exit(false, JavaThread::jni_detach);
5428 delete thread;
5429
5430 #ifndef USDT2
5431 DTRACE_PROBE1(hotspot_jni, DetachCurrentThread__return, JNI_OK);
5432 #else /* USDT2 */
5433 HOTSPOT_JNI_DETACHCURRENTTHREAD_RETURN(
5434 JNI_OK);
5435 #endif /* USDT2 */
5436 return JNI_OK;
5437 }
5438
5439 #ifndef USDT2
5440 DT_RETURN_MARK_DECL(GetEnv, jint);
5441 #else /* USDT2 */
5442 DT_RETURN_MARK_DECL(GetEnv, jint
5443 , HOTSPOT_JNI_GETENV_RETURN(_ret_ref));
5444 #endif /* USDT2 */
5445
5446 jint JNICALL jni_GetEnv(JavaVM *vm, void **penv, jint version) {
5447 #ifndef USDT2
5448 DTRACE_PROBE3(hotspot_jni, GetEnv__entry, vm, penv, version);
5449 #else /* USDT2 */
5450 HOTSPOT_JNI_GETENV_ENTRY(
5451 vm, penv, version);
5452 #endif /* USDT2 */
5453 jint ret = JNI_ERR;
5454 DT_RETURN_MARK(GetEnv, jint, (const jint&)ret);
5455
5456 if (!vm_created) {
5457 *penv = NULL;
5458 ret = JNI_EDETACHED;
5459 return ret;
5460 }
5461
5462 if (JniExportedInterface::GetExportedInterface(vm, penv, version, &ret)) {
5463 return ret;
5464 }
5465
5466 #ifndef JVMPI_VERSION_1
5467 // need these in order to be polite about older agents
5468 #define JVMPI_VERSION_1 ((jint)0x10000001)
5469 #define JVMPI_VERSION_1_1 ((jint)0x10000002)
5470 #define JVMPI_VERSION_1_2 ((jint)0x10000003)
5471 #endif // !JVMPI_VERSION_1
5472
5473 Thread* thread = ThreadLocalStorage::thread();
5474 if (thread != NULL && thread->is_Java_thread()) {
5475 if (Threads::is_supported_jni_version_including_1_1(version)) {
5476 *(JNIEnv**)penv = ((JavaThread*) thread)->jni_environment();
5477 ret = JNI_OK;
5478 return ret;
5479
5480 } else if (version == JVMPI_VERSION_1 ||
5481 version == JVMPI_VERSION_1_1 ||
5482 version == JVMPI_VERSION_1_2) {
5483 tty->print_cr("ERROR: JVMPI, an experimental interface, is no longer supported.");
5484 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5485 ret = JNI_EVERSION;
5486 return ret;
5487 } else if (JvmtiExport::is_jvmdi_version(version)) {
5488 tty->print_cr("FATAL ERROR: JVMDI is no longer supported.");
5489 tty->print_cr("Please use the supported interface: the JVM Tool Interface (JVM TI).");
5490 ret = JNI_EVERSION;
5491 return ret;
5492 } else {
5493 *penv = NULL;
5494 ret = JNI_EVERSION;
5495 return ret;
5496 }
5497 } else {
5498 *penv = NULL;
5499 ret = JNI_EDETACHED;
5500 return ret;
5501 }
5502 }
5503
5504
5505 jint JNICALL jni_AttachCurrentThreadAsDaemon(JavaVM *vm, void **penv, void *_args) {
5506 #ifndef USDT2
5507 DTRACE_PROBE3(hotspot_jni, AttachCurrentThreadAsDaemon__entry, vm, penv, _args);
5508 #else /* USDT2 */
5509 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_ENTRY(
5510 vm, penv, _args);
5511 #endif /* USDT2 */
5512 if (!vm_created) {
5513 #ifndef USDT2
5514 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, JNI_ERR);
5515 #else /* USDT2 */
5516 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5517 (uint32_t) JNI_ERR);
5518 #endif /* USDT2 */
5519 return JNI_ERR;
5520 }
5521
5522 JNIWrapper("AttachCurrentThreadAsDaemon");
5523 jint ret = attach_current_thread(vm, penv, _args, true);
5524 #ifndef USDT2
5525 DTRACE_PROBE1(hotspot_jni, AttachCurrentThreadAsDaemon__return, ret);
5526 #else /* USDT2 */
5527 HOTSPOT_JNI_ATTACHCURRENTTHREADASDAEMON_RETURN(
5528 ret);
5529 #endif /* USDT2 */
5530 return ret;
5531 }
5532
5533
5534 } // End extern "C"
5535
5536 const struct JNIInvokeInterface_ jni_InvokeInterface = {
5537 NULL,
5538 NULL,
5539 NULL,
5540
5541 jni_DestroyJavaVM,
5542 jni_AttachCurrentThread,
5543 jni_DetachCurrentThread,
5544 jni_GetEnv,
5545 jni_AttachCurrentThreadAsDaemon
5546 };