Mercurial > hg > truffle
annotate src/share/vm/runtime/interfaceSupport.hpp @ 1610:79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
Summary: First, change the guarantee to raising a vm error. Second, set the interval dynamically, and based on the pause time target, if it is not set explicitly.
Reviewed-by: ysr, johnc
author | tonyp |
---|---|
date | Fri, 07 May 2010 13:14:41 -0400 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
---|---|
0 | 1 /* |
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2 * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // Wrapper for all entry points to the virtual machine. | |
26 // The HandleMarkCleaner is a faster version of HandleMark. | |
27 // It relies on the fact that there is a HandleMark further | |
28 // down the stack (in JavaCalls::call_helper), and just resets | |
29 // to the saved values in that HandleMark. | |
30 | |
31 class HandleMarkCleaner: public StackObj { | |
32 private: | |
33 Thread* _thread; | |
34 public: | |
35 HandleMarkCleaner(Thread* thread) { | |
36 _thread = thread; | |
37 _thread->last_handle_mark()->push(); | |
38 } | |
39 ~HandleMarkCleaner() { | |
40 _thread->last_handle_mark()->pop_and_restore(); | |
41 } | |
42 | |
43 private: | |
44 inline void* operator new(size_t size, void* ptr) { | |
45 return ptr; | |
46 } | |
47 }; | |
48 | |
49 // InterfaceSupport provides functionality used by the __LEAF and __ENTRY | |
50 // macros. These macros are used to guard entry points into the VM and | |
51 // perform checks upon leave of the VM. | |
52 | |
53 | |
54 class InterfaceSupport: AllStatic { | |
55 # ifdef ASSERT | |
56 public: | |
57 static long _scavenge_alot_counter; | |
58 static long _fullgc_alot_counter; | |
59 static long _number_of_calls; | |
60 static long _fullgc_alot_invocation; | |
61 | |
62 // tracing | |
63 static void trace(const char* result_type, const char* header); | |
64 | |
65 // Helper methods used to implement +ScavengeALot and +FullGCALot | |
66 static void check_gc_alot() { if (ScavengeALot || FullGCALot) gc_alot(); } | |
67 static void gc_alot(); | |
68 | |
69 static void walk_stack_from(vframe* start_vf); | |
70 static void walk_stack(); | |
71 | |
72 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
73 static void zap_dead_locals_old(); | |
74 # endif | |
75 | |
76 static void zombieAll(); | |
77 static void deoptimizeAll(); | |
78 static void stress_derived_pointers(); | |
79 static void verify_stack(); | |
80 static void verify_last_frame(); | |
81 # endif | |
82 | |
83 public: | |
84 // OS dependent stuff | |
85 #include "incls/_interfaceSupport_pd.hpp.incl" | |
86 }; | |
87 | |
88 | |
89 // Basic class for all thread transition classes. | |
90 | |
91 class ThreadStateTransition : public StackObj { | |
92 protected: | |
93 JavaThread* _thread; | |
94 public: | |
95 ThreadStateTransition(JavaThread *thread) { | |
96 _thread = thread; | |
97 assert(thread != NULL && thread->is_Java_thread(), "must be Java thread"); | |
98 } | |
99 | |
100 // Change threadstate in a manner, so safepoint can detect changes. | |
101 // Time-critical: called on exit from every runtime routine | |
102 static inline void transition(JavaThread *thread, JavaThreadState from, JavaThreadState to) { | |
103 assert(from != _thread_in_Java, "use transition_from_java"); | |
104 assert(from != _thread_in_native, "use transition_from_native"); | |
105 assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states"); | |
106 assert(thread->thread_state() == from, "coming from wrong thread state"); | |
107 // Change to transition state (assumes total store ordering! -Urs) | |
108 thread->set_thread_state((JavaThreadState)(from + 1)); | |
109 | |
110 // Make sure new state is seen by VM thread | |
111 if (os::is_MP()) { | |
112 if (UseMembar) { | |
113 // Force a fence between the write above and read below | |
114 OrderAccess::fence(); | |
115 } else { | |
116 // store to serialize page so VM thread can do pseudo remote membar | |
117 os::write_memory_serialize_page(thread); | |
118 } | |
119 } | |
120 | |
121 if (SafepointSynchronize::do_call_back()) { | |
122 SafepointSynchronize::block(thread); | |
123 } | |
124 thread->set_thread_state(to); | |
125 | |
126 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
127 } | |
128 | |
129 // transition_and_fence must be used on any thread state transition | |
130 // where there might not be a Java call stub on the stack, in | |
131 // particular on Windows where the Structured Exception Handler is | |
132 // set up in the call stub. os::write_memory_serialize_page() can | |
133 // fault and we can't recover from it on Windows without a SEH in | |
134 // place. | |
135 static inline void transition_and_fence(JavaThread *thread, JavaThreadState from, JavaThreadState to) { | |
136 assert(thread->thread_state() == from, "coming from wrong thread state"); | |
137 assert((from & 1) == 0 && (to & 1) == 0, "odd numbers are transitions states"); | |
138 // Change to transition state (assumes total store ordering! -Urs) | |
139 thread->set_thread_state((JavaThreadState)(from + 1)); | |
140 | |
141 // Make sure new state is seen by VM thread | |
142 if (os::is_MP()) { | |
143 if (UseMembar) { | |
144 // Force a fence between the write above and read below | |
145 OrderAccess::fence(); | |
146 } else { | |
147 // Must use this rather than serialization page in particular on Windows | |
148 InterfaceSupport::serialize_memory(thread); | |
149 } | |
150 } | |
151 | |
152 if (SafepointSynchronize::do_call_back()) { | |
153 SafepointSynchronize::block(thread); | |
154 } | |
155 thread->set_thread_state(to); | |
156 | |
157 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
158 } | |
159 | |
160 // Same as above, but assumes from = _thread_in_Java. This is simpler, since we | |
161 // never block on entry to the VM. This will break the code, since e.g. preserve arguments | |
162 // have not been setup. | |
163 static inline void transition_from_java(JavaThread *thread, JavaThreadState to) { | |
164 assert(thread->thread_state() == _thread_in_Java, "coming from wrong thread state"); | |
165 thread->set_thread_state(to); | |
166 } | |
167 | |
168 static inline void transition_from_native(JavaThread *thread, JavaThreadState to) { | |
169 assert((to & 1) == 0, "odd numbers are transitions states"); | |
170 assert(thread->thread_state() == _thread_in_native, "coming from wrong thread state"); | |
171 // Change to transition state (assumes total store ordering! -Urs) | |
172 thread->set_thread_state(_thread_in_native_trans); | |
173 | |
174 // Make sure new state is seen by GC thread | |
175 if (os::is_MP()) { | |
176 if (UseMembar) { | |
177 // Force a fence between the write above and read below | |
178 OrderAccess::fence(); | |
179 } else { | |
180 // Must use this rather than serialization page in particular on Windows | |
181 InterfaceSupport::serialize_memory(thread); | |
182 } | |
183 } | |
184 | |
185 // We never install asynchronous exceptions when coming (back) in | |
186 // to the runtime from native code because the runtime is not set | |
187 // up to handle exceptions floating around at arbitrary points. | |
188 if (SafepointSynchronize::do_call_back() || thread->is_suspend_after_native()) { | |
189 JavaThread::check_safepoint_and_suspend_for_native_trans(thread); | |
190 | |
191 // Clear unhandled oops anywhere where we could block, even if we don't. | |
192 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
193 } | |
194 | |
195 thread->set_thread_state(to); | |
196 } | |
197 protected: | |
198 void trans(JavaThreadState from, JavaThreadState to) { transition(_thread, from, to); } | |
199 void trans_from_java(JavaThreadState to) { transition_from_java(_thread, to); } | |
200 void trans_from_native(JavaThreadState to) { transition_from_native(_thread, to); } | |
201 void trans_and_fence(JavaThreadState from, JavaThreadState to) { transition_and_fence(_thread, from, to); } | |
202 }; | |
203 | |
204 | |
205 class ThreadInVMfromJava : public ThreadStateTransition { | |
206 public: | |
207 ThreadInVMfromJava(JavaThread* thread) : ThreadStateTransition(thread) { | |
208 trans_from_java(_thread_in_vm); | |
209 } | |
210 ~ThreadInVMfromJava() { | |
211 trans(_thread_in_vm, _thread_in_Java); | |
212 // Check for pending. async. exceptions or suspends. | |
213 if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition(); | |
214 } | |
215 }; | |
216 | |
217 | |
218 class ThreadInVMfromUnknown { | |
219 private: | |
220 JavaThread* _thread; | |
221 public: | |
222 ThreadInVMfromUnknown() : _thread(NULL) { | |
223 Thread* t = Thread::current(); | |
224 if (t->is_Java_thread()) { | |
225 JavaThread* t2 = (JavaThread*) t; | |
226 if (t2->thread_state() == _thread_in_native) { | |
227 _thread = t2; | |
228 ThreadStateTransition::transition_from_native(t2, _thread_in_vm); | |
229 // Used to have a HandleMarkCleaner but that is dangerous as | |
230 // it could free a handle in our (indirect, nested) caller. | |
231 // We expect any handles will be short lived and figure we | |
232 // don't need an actual HandleMark. | |
233 } | |
234 } | |
235 } | |
236 ~ThreadInVMfromUnknown() { | |
237 if (_thread) { | |
238 ThreadStateTransition::transition_and_fence(_thread, _thread_in_vm, _thread_in_native); | |
239 } | |
240 } | |
241 }; | |
242 | |
243 | |
244 class ThreadInVMfromNative : public ThreadStateTransition { | |
245 public: | |
246 ThreadInVMfromNative(JavaThread* thread) : ThreadStateTransition(thread) { | |
247 trans_from_native(_thread_in_vm); | |
248 } | |
249 ~ThreadInVMfromNative() { | |
250 trans_and_fence(_thread_in_vm, _thread_in_native); | |
251 } | |
252 }; | |
253 | |
254 | |
255 class ThreadToNativeFromVM : public ThreadStateTransition { | |
256 public: | |
257 ThreadToNativeFromVM(JavaThread *thread) : ThreadStateTransition(thread) { | |
258 // We are leaving the VM at this point and going directly to native code. | |
259 // Block, if we are in the middle of a safepoint synchronization. | |
260 assert(!thread->owns_locks(), "must release all locks when leaving VM"); | |
261 thread->frame_anchor()->make_walkable(thread); | |
262 trans_and_fence(_thread_in_vm, _thread_in_native); | |
263 // Check for pending. async. exceptions or suspends. | |
264 if (_thread->has_special_runtime_exit_condition()) _thread->handle_special_runtime_exit_condition(false); | |
265 } | |
266 | |
267 ~ThreadToNativeFromVM() { | |
268 trans_from_native(_thread_in_vm); | |
269 // We don't need to clear_walkable because it will happen automagically when we return to java | |
270 } | |
271 }; | |
272 | |
273 | |
274 class ThreadBlockInVM : public ThreadStateTransition { | |
275 public: | |
276 ThreadBlockInVM(JavaThread *thread) | |
277 : ThreadStateTransition(thread) { | |
278 // Once we are blocked vm expects stack to be walkable | |
279 thread->frame_anchor()->make_walkable(thread); | |
280 trans_and_fence(_thread_in_vm, _thread_blocked); | |
281 } | |
282 ~ThreadBlockInVM() { | |
283 trans_and_fence(_thread_blocked, _thread_in_vm); | |
284 // We don't need to clear_walkable because it will happen automagically when we return to java | |
285 } | |
286 }; | |
287 | |
288 | |
289 // This special transition class is only used to prevent asynchronous exceptions | |
290 // from being installed on vm exit in situations where we can't tolerate them. | |
291 // See bugs: 4324348, 4854693, 4998314, 5040492, 5050705. | |
292 class ThreadInVMfromJavaNoAsyncException : public ThreadStateTransition { | |
293 public: | |
294 ThreadInVMfromJavaNoAsyncException(JavaThread* thread) : ThreadStateTransition(thread) { | |
295 trans_from_java(_thread_in_vm); | |
296 } | |
297 ~ThreadInVMfromJavaNoAsyncException() { | |
298 trans(_thread_in_vm, _thread_in_Java); | |
299 // NOTE: We do not check for pending. async. exceptions. | |
300 // If we did and moved the pending async exception over into the | |
301 // pending exception field, we would need to deopt (currently C2 | |
302 // only). However, to do so would require that we transition back | |
303 // to the _thread_in_vm state. Instead we postpone the handling of | |
304 // the async exception. | |
305 | |
306 // Check for pending. suspends only. | |
307 if (_thread->has_special_runtime_exit_condition()) | |
308 _thread->handle_special_runtime_exit_condition(false); | |
309 } | |
310 }; | |
311 | |
312 // Debug class instantiated in JRT_ENTRY and ITR_ENTRY macro. | |
313 // Can be used to verify properties on enter/exit of the VM. | |
314 | |
315 #ifdef ASSERT | |
316 class VMEntryWrapper { | |
317 public: | |
318 VMEntryWrapper() { | |
319 if (VerifyLastFrame) { | |
320 InterfaceSupport::verify_last_frame(); | |
321 } | |
322 } | |
323 | |
324 ~VMEntryWrapper() { | |
325 InterfaceSupport::check_gc_alot(); | |
326 if (WalkStackALot) { | |
327 InterfaceSupport::walk_stack(); | |
328 } | |
329 #ifdef ENABLE_ZAP_DEAD_LOCALS | |
330 if (ZapDeadLocalsOld) { | |
331 InterfaceSupport::zap_dead_locals_old(); | |
332 } | |
333 #endif | |
334 #ifdef COMPILER2 | |
335 // This option is not used by Compiler 1 | |
336 if (StressDerivedPointers) { | |
337 InterfaceSupport::stress_derived_pointers(); | |
338 } | |
339 #endif | |
340 if (DeoptimizeALot || DeoptimizeRandom) { | |
341 InterfaceSupport::deoptimizeAll(); | |
342 } | |
343 if (ZombieALot) { | |
344 InterfaceSupport::zombieAll(); | |
345 } | |
346 // do verification AFTER potential deoptimization | |
347 if (VerifyStack) { | |
348 InterfaceSupport::verify_stack(); | |
349 } | |
350 | |
351 } | |
352 }; | |
353 | |
354 | |
355 class VMNativeEntryWrapper { | |
356 public: | |
357 VMNativeEntryWrapper() { | |
358 if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot(); | |
359 } | |
360 | |
361 ~VMNativeEntryWrapper() { | |
362 if (GCALotAtAllSafepoints) InterfaceSupport::check_gc_alot(); | |
363 } | |
364 }; | |
365 | |
366 #endif | |
367 | |
368 | |
369 // VM-internal runtime interface support | |
370 | |
371 #ifdef ASSERT | |
372 | |
373 class RuntimeHistogramElement : public HistogramElement { | |
374 public: | |
375 RuntimeHistogramElement(const char* name); | |
376 }; | |
377 | |
378 #define TRACE_CALL(result_type, header) \ | |
379 InterfaceSupport::_number_of_calls++; \ | |
380 if (TraceRuntimeCalls) \ | |
381 InterfaceSupport::trace(#result_type, #header); \ | |
382 if (CountRuntimeCalls) { \ | |
383 static RuntimeHistogramElement* e = new RuntimeHistogramElement(#header); \ | |
384 if (e != NULL) e->increment_count(); \ | |
385 } | |
386 #else | |
387 #define TRACE_CALL(result_type, header) \ | |
388 /* do nothing */ | |
389 #endif | |
390 | |
391 | |
392 // LEAF routines do not lock, GC or throw exceptions | |
393 | |
394 #define __LEAF(result_type, header) \ | |
395 TRACE_CALL(result_type, header) \ | |
396 debug_only(NoHandleMark __hm;) \ | |
397 /* begin of body */ | |
398 | |
399 | |
400 // ENTRY routines may lock, GC and throw exceptions | |
401 | |
402 #define __ENTRY(result_type, header, thread) \ | |
403 TRACE_CALL(result_type, header) \ | |
404 HandleMarkCleaner __hm(thread); \ | |
405 Thread* THREAD = thread; \ | |
406 /* begin of body */ | |
407 | |
408 | |
409 // QUICK_ENTRY routines behave like ENTRY but without a handle mark | |
410 | |
411 #define __QUICK_ENTRY(result_type, header, thread) \ | |
412 TRACE_CALL(result_type, header) \ | |
413 debug_only(NoHandleMark __hm;) \ | |
414 Thread* THREAD = thread; \ | |
415 /* begin of body */ | |
416 | |
417 | |
418 // Definitions for IRT (Interpreter Runtime) | |
419 // (thread is an argument passed in to all these routines) | |
420 | |
421 #define IRT_ENTRY(result_type, header) \ | |
422 result_type header { \ | |
423 ThreadInVMfromJava __tiv(thread); \ | |
424 __ENTRY(result_type, header, thread) \ | |
425 debug_only(VMEntryWrapper __vew;) | |
426 | |
427 | |
428 #define IRT_LEAF(result_type, header) \ | |
429 result_type header { \ | |
430 __LEAF(result_type, header) \ | |
431 debug_only(No_Safepoint_Verifier __nspv(true);) | |
432 | |
433 | |
434 #define IRT_ENTRY_NO_ASYNC(result_type, header) \ | |
435 result_type header { \ | |
436 ThreadInVMfromJavaNoAsyncException __tiv(thread); \ | |
437 __ENTRY(result_type, header, thread) \ | |
438 debug_only(VMEntryWrapper __vew;) | |
439 | |
440 // Another special case for nmethod_entry_point so the nmethod that the | |
441 // interpreter is about to branch to doesn't get flushed before as we | |
442 // branch to it's interpreter_entry_point. Skip stress testing here too. | |
443 // Also we don't allow async exceptions because it is just too painful. | |
444 #define IRT_ENTRY_FOR_NMETHOD(result_type, header) \ | |
445 result_type header { \ | |
446 nmethodLocker _nmlock(nm); \ | |
447 ThreadInVMfromJavaNoAsyncException __tiv(thread); \ | |
448 __ENTRY(result_type, header, thread) | |
449 | |
450 #define IRT_END } | |
451 | |
452 | |
453 // Definitions for JRT (Java (Compiler/Shared) Runtime) | |
454 | |
455 #define JRT_ENTRY(result_type, header) \ | |
456 result_type header { \ | |
457 ThreadInVMfromJava __tiv(thread); \ | |
458 __ENTRY(result_type, header, thread) \ | |
459 debug_only(VMEntryWrapper __vew;) | |
460 | |
461 | |
462 #define JRT_LEAF(result_type, header) \ | |
463 result_type header { \ | |
464 __LEAF(result_type, header) \ | |
465 debug_only(JRT_Leaf_Verifier __jlv;) | |
466 | |
467 | |
468 #define JRT_ENTRY_NO_ASYNC(result_type, header) \ | |
469 result_type header { \ | |
470 ThreadInVMfromJavaNoAsyncException __tiv(thread); \ | |
471 __ENTRY(result_type, header, thread) \ | |
472 debug_only(VMEntryWrapper __vew;) | |
473 | |
474 // Same as JRT Entry but allows for return value after the safepoint | |
475 // to get back into Java from the VM | |
476 #define JRT_BLOCK_ENTRY(result_type, header) \ | |
477 result_type header { \ | |
478 TRACE_CALL(result_type, header) \ | |
479 HandleMarkCleaner __hm(thread); | |
480 | |
481 #define JRT_BLOCK \ | |
482 { \ | |
483 ThreadInVMfromJava __tiv(thread); \ | |
484 Thread* THREAD = thread; \ | |
485 debug_only(VMEntryWrapper __vew;) | |
486 | |
487 #define JRT_BLOCK_END } | |
488 | |
489 #define JRT_END } | |
490 | |
491 // Definitions for JNI | |
492 | |
493 #define JNI_ENTRY(result_type, header) \ | |
494 JNI_ENTRY_NO_PRESERVE(result_type, header) \ | |
495 WeakPreserveExceptionMark __wem(thread); | |
496 | |
497 #define JNI_ENTRY_NO_PRESERVE(result_type, header) \ | |
498 extern "C" { \ | |
499 result_type JNICALL header { \ | |
500 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
501 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \ | |
502 ThreadInVMfromNative __tiv(thread); \ | |
503 debug_only(VMNativeEntryWrapper __vew;) \ | |
504 __ENTRY(result_type, header, thread) | |
505 | |
506 | |
507 // Ensure that the VMNativeEntryWrapper constructor, which can cause | |
508 // a GC, is called outside the NoHandleMark (set via __QUICK_ENTRY). | |
509 #define JNI_QUICK_ENTRY(result_type, header) \ | |
510 extern "C" { \ | |
511 result_type JNICALL header { \ | |
512 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
513 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \ | |
514 ThreadInVMfromNative __tiv(thread); \ | |
515 debug_only(VMNativeEntryWrapper __vew;) \ | |
516 __QUICK_ENTRY(result_type, header, thread) | |
517 | |
518 | |
519 #define JNI_LEAF(result_type, header) \ | |
520 extern "C" { \ | |
521 result_type JNICALL header { \ | |
522 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
523 assert( !VerifyJNIEnvThread || (thread == Thread::current()), "JNIEnv is only valid in same thread"); \ | |
524 __LEAF(result_type, header) | |
525 | |
526 | |
527 // Close the routine and the extern "C" | |
528 #define JNI_END } } | |
529 | |
530 | |
531 | |
532 // Definitions for JVM | |
533 | |
534 #define JVM_ENTRY(result_type, header) \ | |
535 extern "C" { \ | |
536 result_type JNICALL header { \ | |
537 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
538 ThreadInVMfromNative __tiv(thread); \ | |
539 debug_only(VMNativeEntryWrapper __vew;) \ | |
540 __ENTRY(result_type, header, thread) | |
541 | |
542 | |
543 #define JVM_ENTRY_NO_ENV(result_type, header) \ | |
544 extern "C" { \ | |
545 result_type JNICALL header { \ | |
546 JavaThread* thread = (JavaThread*)ThreadLocalStorage::thread(); \ | |
547 ThreadInVMfromNative __tiv(thread); \ | |
548 debug_only(VMNativeEntryWrapper __vew;) \ | |
549 __ENTRY(result_type, header, thread) | |
550 | |
551 | |
552 #define JVM_QUICK_ENTRY(result_type, header) \ | |
553 extern "C" { \ | |
554 result_type JNICALL header { \ | |
555 JavaThread* thread=JavaThread::thread_from_jni_environment(env); \ | |
556 ThreadInVMfromNative __tiv(thread); \ | |
557 debug_only(VMNativeEntryWrapper __vew;) \ | |
558 __QUICK_ENTRY(result_type, header, thread) | |
559 | |
560 | |
561 #define JVM_LEAF(result_type, header) \ | |
562 extern "C" { \ | |
563 result_type JNICALL header { \ | |
564 VM_Exit::block_if_vm_exited(); \ | |
565 __LEAF(result_type, header) | |
566 | |
567 | |
568 #define JVM_END } } |