Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiEnvBase.hpp @ 667:78af5ae8e731
6636138: UseSuperWord enabled failure
Summary: Fixed SuperWord scheduling of memory operations.
Reviewed-by: kvn, never
author | cfang |
---|---|
date | Tue, 24 Mar 2009 12:19:47 -0700 |
parents | 2f716c0acb64 |
children | dcb15a6f342d |
rev | line source |
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0 | 1 /* |
2 * Copyright 2003-2006 Sun Microsystems, Inc. All Rights Reserved. | |
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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #ifndef _JAVA_JVMTIENVBASE_H_ | |
26 #define _JAVA_JVMTIENVBASE_H_ | |
27 | |
28 // | |
29 // Forward Declarations | |
30 // | |
31 | |
32 class JvmtiEnv; | |
33 class JvmtiThreadState; | |
34 class JvmtiRawMonitor; // for jvmtiEnv.hpp | |
35 class JvmtiEventControllerPrivate; | |
36 class JvmtiTagMap; | |
37 | |
38 | |
39 | |
40 // One JvmtiEnv object is created per jvmti attachment; | |
41 // done via JNI GetEnv() call. Multiple attachments are | |
42 // allowed in jvmti. | |
43 | |
44 class JvmtiEnvBase : public CHeapObj { | |
45 | |
46 private: | |
47 | |
48 static JvmtiEnvBase* _head_environment; // head of environment list | |
49 | |
50 static bool _globally_initialized; | |
51 static jvmtiPhase _phase; | |
52 static volatile int _dying_thread_env_iteration_count; | |
53 | |
54 public: | |
55 | |
56 enum { | |
57 JDK15_JVMTI_VERSION = JVMTI_VERSION_1_0 + 33, /* version: 1.0.33 */ | |
58 JDK16_JVMTI_VERSION = JVMTI_VERSION_1_1 + 102 /* version: 1.1.102 */ | |
59 }; | |
60 | |
61 static jvmtiPhase get_phase() { return _phase; } | |
62 static void set_phase(jvmtiPhase phase) { _phase = phase; } | |
63 static bool is_vm_live() { return _phase == JVMTI_PHASE_LIVE; } | |
64 | |
65 static void entering_dying_thread_env_iteration() { ++_dying_thread_env_iteration_count; } | |
66 static void leaving_dying_thread_env_iteration() { --_dying_thread_env_iteration_count; } | |
67 static bool is_inside_dying_thread_env_iteration(){ return _dying_thread_env_iteration_count > 0; } | |
68 | |
69 private: | |
70 | |
71 enum { | |
72 JVMTI_MAGIC = 0x71EE, | |
73 DISPOSED_MAGIC = 0xDEFC, | |
74 BAD_MAGIC = 0xDEAD | |
75 }; | |
76 | |
77 jvmtiEnv _jvmti_external; | |
78 jint _magic; | |
79 JvmtiEnvBase* _next; | |
80 bool _is_retransformable; | |
81 const void *_env_local_storage; // per env agent allocated data. | |
82 jvmtiEventCallbacks _event_callbacks; | |
83 jvmtiExtEventCallbacks _ext_event_callbacks; | |
84 JvmtiTagMap* _tag_map; | |
85 JvmtiEnvEventEnable _env_event_enable; | |
86 jvmtiCapabilities _current_capabilities; | |
87 jvmtiCapabilities _prohibited_capabilities; | |
88 volatile bool _class_file_load_hook_ever_enabled; | |
89 static volatile bool _needs_clean_up; | |
90 char** _native_method_prefixes; | |
91 int _native_method_prefix_count; | |
92 | |
93 protected: | |
94 JvmtiEnvBase(); | |
95 ~JvmtiEnvBase(); | |
96 void dispose(); | |
97 void env_dispose(); | |
98 | |
99 void set_env_local_storage(const void* data) { _env_local_storage = data; } | |
100 const void* get_env_local_storage() { return _env_local_storage; } | |
101 | |
102 void record_class_file_load_hook_enabled(); | |
103 void record_first_time_class_file_load_hook_enabled(); | |
104 | |
105 char** get_native_method_prefixes() { return _native_method_prefixes; } | |
106 int get_native_method_prefix_count() { return _native_method_prefix_count; } | |
107 jvmtiError set_native_method_prefixes(jint prefix_count, char** prefixes); | |
108 | |
109 private: | |
110 friend class JvmtiEventControllerPrivate; | |
111 void initialize(); | |
112 void set_event_callbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks); | |
113 static void globally_initialize(); | |
114 static void periodic_clean_up(); | |
115 | |
116 friend class JvmtiEnvIterator; | |
117 JvmtiEnv* next_environment() { return (JvmtiEnv*)_next; } | |
118 void set_next_environment(JvmtiEnvBase* env) { _next = env; } | |
119 static JvmtiEnv* head_environment() { return (JvmtiEnv*)_head_environment; } | |
120 | |
121 public: | |
122 | |
611
2f716c0acb64
6567360: 3/4 SIGBUS in jvmti RawMonitor magic check for unaligned bad monitor pointer
dcubed
parents:
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changeset
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123 bool is_valid(); |
0 | 124 |
125 bool is_retransformable() { return _is_retransformable; } | |
126 | |
127 static ByteSize jvmti_external_offset() { | |
128 return byte_offset_of(JvmtiEnvBase, _jvmti_external); | |
129 }; | |
130 | |
131 static JvmtiEnv* JvmtiEnv_from_jvmti_env(jvmtiEnv *env) { | |
132 return (JvmtiEnv*)((intptr_t)env - in_bytes(jvmti_external_offset())); | |
133 }; | |
134 | |
135 jvmtiCapabilities *get_capabilities() { return &_current_capabilities; } | |
136 | |
137 jvmtiCapabilities *get_prohibited_capabilities() { return &_prohibited_capabilities; } | |
138 | |
139 static char** get_all_native_method_prefixes(int* count_ptr); | |
140 | |
141 // This test will answer true when all environments have been disposed and some have | |
142 // not yet been deallocated. As a result, this test should only be used as an | |
143 // optimization for the no environment case. | |
144 static bool environments_might_exist() { | |
145 return head_environment() != NULL; | |
146 } | |
147 | |
148 static void check_for_periodic_clean_up(); | |
149 | |
150 JvmtiEnvEventEnable *env_event_enable() { | |
151 return &_env_event_enable; | |
152 } | |
153 | |
154 jvmtiError allocate(jlong size, unsigned char** mem_ptr) { | |
155 if (size < 0) { | |
156 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
157 } | |
158 if (size == 0) { | |
159 *mem_ptr = NULL; | |
160 } else { | |
161 *mem_ptr = (unsigned char *)os::malloc((size_t)size); | |
162 if (*mem_ptr == NULL) { | |
163 return JVMTI_ERROR_OUT_OF_MEMORY; | |
164 } | |
165 } | |
166 return JVMTI_ERROR_NONE; | |
167 } | |
168 | |
169 jvmtiError deallocate(unsigned char* mem) { | |
170 if (mem != NULL) { | |
171 os::free(mem); | |
172 } | |
173 return JVMTI_ERROR_NONE; | |
174 } | |
175 | |
176 | |
177 // Memory functions | |
178 unsigned char* jvmtiMalloc(jlong size); // don't use this - call allocate | |
179 | |
180 // method to create a local handle | |
181 jobject jni_reference(Handle hndl) { | |
182 return JNIHandles::make_local(hndl()); | |
183 } | |
184 | |
185 // method to create a local handle. | |
186 // This function allows caller to specify which | |
187 // threads local handle table to use. | |
188 jobject jni_reference(JavaThread *thread, Handle hndl) { | |
189 return JNIHandles::make_local(thread, hndl()); | |
190 } | |
191 | |
192 // method to destroy a local handle | |
193 void destroy_jni_reference(jobject jobj) { | |
194 JNIHandles::destroy_local(jobj); | |
195 } | |
196 | |
197 // method to destroy a local handle. | |
198 // This function allows caller to specify which | |
199 // threads local handle table to use although currently it is | |
200 // not used. | |
201 void destroy_jni_reference(JavaThread *thread, jobject jobj) { | |
202 destroy_jni_reference(jobj); | |
203 } | |
204 | |
205 jvmtiEnv* jvmti_external() { return &_jvmti_external; }; | |
206 | |
207 // Event Dispatch | |
208 | |
209 bool has_callback(jvmtiEvent event_type) { | |
210 assert(event_type >= JVMTI_MIN_EVENT_TYPE_VAL && | |
211 event_type <= JVMTI_MAX_EVENT_TYPE_VAL, "checking"); | |
212 return ((void**)&_event_callbacks)[event_type-JVMTI_MIN_EVENT_TYPE_VAL] != NULL; | |
213 } | |
214 | |
215 jvmtiEventCallbacks* callbacks() { | |
216 return &_event_callbacks; | |
217 } | |
218 | |
219 jvmtiExtEventCallbacks* ext_callbacks() { | |
220 return &_ext_event_callbacks; | |
221 } | |
222 | |
223 void set_tag_map(JvmtiTagMap* tag_map) { | |
224 _tag_map = tag_map; | |
225 } | |
226 | |
227 JvmtiTagMap* tag_map() { | |
228 return _tag_map; | |
229 } | |
230 | |
231 | |
232 // return true if event is enabled globally or for any thread | |
233 // True only if there is a callback for it. | |
234 bool is_enabled(jvmtiEvent event_type) { | |
235 return _env_event_enable.is_enabled(event_type); | |
236 } | |
237 | |
238 // Random Utilities | |
239 | |
240 protected: | |
241 // helper methods for creating arrays of global JNI Handles from local Handles | |
242 // allocated into environment specific storage | |
243 jobject * new_jobjectArray(int length, Handle *handles); | |
244 jthread * new_jthreadArray(int length, Handle *handles); | |
245 jthreadGroup * new_jthreadGroupArray(int length, Handle *handles); | |
246 | |
247 // convert from JNIHandle to JavaThread * | |
248 JavaThread * get_JavaThread(jthread jni_thread); | |
249 | |
250 // convert to a jni jclass from a non-null klassOop | |
251 jclass get_jni_class_non_null(klassOop k); | |
252 | |
253 void update_klass_field_access_flag(fieldDescriptor *fd); | |
254 | |
255 jint count_locked_objects(JavaThread *java_thread, Handle hobj); | |
256 jvmtiError get_locked_objects_in_frame(JavaThread *calling_thread, | |
257 JavaThread* java_thread, | |
258 javaVFrame *jvf, | |
259 GrowableArray<jvmtiMonitorStackDepthInfo*>* owned_monitors_list, | |
260 jint depth); | |
261 vframe* vframeFor(JavaThread* java_thread, jint depth); | |
262 | |
263 public: | |
264 // get a field descriptor for the specified class and field | |
265 static bool get_field_descriptor(klassOop k, jfieldID field, fieldDescriptor* fd); | |
266 // test for suspend - most (all?) of these should go away | |
267 static bool is_thread_fully_suspended(JavaThread *thread, | |
268 bool wait_for_suspend, | |
269 uint32_t *bits); | |
270 | |
271 | |
272 // JVMTI API helper functions which are called at safepoint or thread is suspended. | |
273 jvmtiError get_frame_count(JvmtiThreadState *state, jint *count_ptr); | |
274 jvmtiError get_frame_location(JavaThread* java_thread, jint depth, | |
275 jmethodID* method_ptr, jlocation* location_ptr); | |
276 jvmtiError get_object_monitor_usage(JavaThread *calling_thread, | |
277 jobject object, jvmtiMonitorUsage* info_ptr); | |
278 jvmtiError get_stack_trace(JavaThread *java_thread, | |
279 jint stack_depth, jint max_count, | |
280 jvmtiFrameInfo* frame_buffer, jint* count_ptr); | |
281 jvmtiError get_current_contended_monitor(JavaThread *calling_thread, | |
282 JavaThread *java_thread, | |
283 jobject *monitor_ptr); | |
284 jvmtiError get_owned_monitors(JavaThread *calling_thread, JavaThread* java_thread, | |
285 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list); | |
286 jvmtiError check_top_frame(JavaThread* current_thread, JavaThread* java_thread, | |
287 jvalue value, TosState tos, Handle* ret_ob_h); | |
288 jvmtiError force_early_return(JavaThread* java_thread, jvalue value, TosState tos); | |
289 }; | |
290 | |
291 // This class is the only safe means of iterating through environments. | |
292 // Note that this iteratation includes invalid environments pending | |
293 // deallocation -- in fact, some uses depend on this behavior. | |
294 | |
295 class JvmtiEnvIterator : public StackObj { | |
296 private: | |
297 bool _entry_was_marked; | |
298 public: | |
299 JvmtiEnvIterator() { | |
300 if (Threads::number_of_threads() == 0) { | |
301 _entry_was_marked = false; // we are single-threaded, no need | |
302 } else { | |
303 Thread::current()->entering_jvmti_env_iteration(); | |
304 _entry_was_marked = true; | |
305 } | |
306 } | |
307 ~JvmtiEnvIterator() { | |
308 if (_entry_was_marked) { | |
309 Thread::current()->leaving_jvmti_env_iteration(); | |
310 } | |
311 } | |
312 JvmtiEnv* first() { return JvmtiEnvBase::head_environment(); } | |
313 JvmtiEnv* next(JvmtiEnvBase* env) { return env->next_environment(); } | |
314 }; | |
315 | |
316 | |
317 // VM operation to get monitor information with stack depth. | |
318 class VM_GetOwnedMonitorInfo : public VM_Operation { | |
319 private: | |
320 JvmtiEnv *_env; | |
321 JavaThread* _calling_thread; | |
322 JavaThread *_java_thread; | |
323 jvmtiError _result; | |
324 GrowableArray<jvmtiMonitorStackDepthInfo*> *_owned_monitors_list; | |
325 | |
326 public: | |
327 VM_GetOwnedMonitorInfo(JvmtiEnv* env, JavaThread* calling_thread, | |
328 JavaThread* java_thread, | |
329 GrowableArray<jvmtiMonitorStackDepthInfo*>* owned_monitor_list) { | |
330 _env = env; | |
331 _calling_thread = calling_thread; | |
332 _java_thread = java_thread; | |
333 _owned_monitors_list = owned_monitor_list; | |
334 _result = JVMTI_ERROR_NONE; | |
335 } | |
336 VMOp_Type type() const { return VMOp_GetOwnedMonitorInfo; } | |
337 void doit() { | |
338 ((JvmtiEnvBase *)_env)->get_owned_monitors(_calling_thread, _java_thread, | |
339 _owned_monitors_list); | |
340 } | |
341 jvmtiError result() { return _result; } | |
342 }; | |
343 | |
344 | |
345 // VM operation to get object monitor usage. | |
346 class VM_GetObjectMonitorUsage : public VM_Operation { | |
347 private: | |
348 JvmtiEnv *_env; | |
349 jobject _object; | |
350 JavaThread* _calling_thread; | |
351 jvmtiMonitorUsage* _info_ptr; | |
352 jvmtiError _result; | |
353 | |
354 public: | |
355 VM_GetObjectMonitorUsage(JvmtiEnv *env, JavaThread* calling_thread, jobject object, jvmtiMonitorUsage* info_ptr) { | |
356 _env = env; | |
357 _object = object; | |
358 _calling_thread = calling_thread; | |
359 _info_ptr = info_ptr; | |
360 } | |
361 VMOp_Type type() const { return VMOp_GetObjectMonitorUsage; } | |
362 jvmtiError result() { return _result; } | |
363 void doit() { | |
364 _result = ((JvmtiEnvBase*) _env)->get_object_monitor_usage(_calling_thread, _object, _info_ptr); | |
365 } | |
366 | |
367 }; | |
368 | |
369 // VM operation to get current contended monitor. | |
370 class VM_GetCurrentContendedMonitor : public VM_Operation { | |
371 private: | |
372 JvmtiEnv *_env; | |
373 JavaThread *_calling_thread; | |
374 JavaThread *_java_thread; | |
375 jobject *_owned_monitor_ptr; | |
376 jvmtiError _result; | |
377 | |
378 public: | |
379 VM_GetCurrentContendedMonitor(JvmtiEnv *env, JavaThread *calling_thread, JavaThread *java_thread, jobject *mon_ptr) { | |
380 _env = env; | |
381 _calling_thread = calling_thread; | |
382 _java_thread = java_thread; | |
383 _owned_monitor_ptr = mon_ptr; | |
384 } | |
385 VMOp_Type type() const { return VMOp_GetCurrentContendedMonitor; } | |
386 jvmtiError result() { return _result; } | |
387 void doit() { | |
388 _result = ((JvmtiEnvBase *)_env)->get_current_contended_monitor(_calling_thread,_java_thread,_owned_monitor_ptr); | |
389 } | |
390 }; | |
391 | |
392 // VM operation to get stack trace at safepoint. | |
393 class VM_GetStackTrace : public VM_Operation { | |
394 private: | |
395 JvmtiEnv *_env; | |
396 JavaThread *_java_thread; | |
397 jint _start_depth; | |
398 jint _max_count; | |
399 jvmtiFrameInfo *_frame_buffer; | |
400 jint *_count_ptr; | |
401 jvmtiError _result; | |
402 | |
403 public: | |
404 VM_GetStackTrace(JvmtiEnv *env, JavaThread *java_thread, | |
405 jint start_depth, jint max_count, | |
406 jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
407 _env = env; | |
408 _java_thread = java_thread; | |
409 _start_depth = start_depth; | |
410 _max_count = max_count; | |
411 _frame_buffer = frame_buffer; | |
412 _count_ptr = count_ptr; | |
413 } | |
414 jvmtiError result() { return _result; } | |
415 VMOp_Type type() const { return VMOp_GetStackTrace; } | |
416 void doit() { | |
417 _result = ((JvmtiEnvBase *)_env)->get_stack_trace(_java_thread, | |
418 _start_depth, _max_count, | |
419 _frame_buffer, _count_ptr); | |
420 } | |
421 }; | |
422 | |
423 // forward declaration | |
424 struct StackInfoNode; | |
425 | |
426 // VM operation to get stack trace at safepoint. | |
427 class VM_GetMultipleStackTraces : public VM_Operation { | |
428 private: | |
429 JvmtiEnv *_env; | |
430 jint _max_frame_count; | |
431 jvmtiStackInfo *_stack_info; | |
432 jvmtiError _result; | |
433 int _frame_count_total; | |
434 struct StackInfoNode *_head; | |
435 | |
436 JvmtiEnvBase *env() { return (JvmtiEnvBase *)_env; } | |
437 jint max_frame_count() { return _max_frame_count; } | |
438 struct StackInfoNode *head() { return _head; } | |
439 void set_head(StackInfoNode *head) { _head = head; } | |
440 | |
441 protected: | |
442 void set_result(jvmtiError result) { _result = result; } | |
443 void fill_frames(jthread jt, JavaThread *thr, oop thread_oop); | |
444 void allocate_and_fill_stacks(jint thread_count); | |
445 | |
446 public: | |
447 VM_GetMultipleStackTraces(JvmtiEnv *env, jint max_frame_count) { | |
448 _env = env; | |
449 _max_frame_count = max_frame_count; | |
450 _frame_count_total = 0; | |
451 _head = NULL; | |
452 _result = JVMTI_ERROR_NONE; | |
453 } | |
454 VMOp_Type type() const { return VMOp_GetMultipleStackTraces; } | |
455 jvmtiStackInfo *stack_info() { return _stack_info; } | |
456 jvmtiError result() { return _result; } | |
457 }; | |
458 | |
459 | |
460 // VM operation to get stack trace at safepoint. | |
461 class VM_GetAllStackTraces : public VM_GetMultipleStackTraces { | |
462 private: | |
463 JavaThread *_calling_thread; | |
464 jint _final_thread_count; | |
465 | |
466 public: | |
467 VM_GetAllStackTraces(JvmtiEnv *env, JavaThread *calling_thread, | |
468 jint max_frame_count) | |
469 : VM_GetMultipleStackTraces(env, max_frame_count) { | |
470 _calling_thread = calling_thread; | |
471 } | |
472 VMOp_Type type() const { return VMOp_GetAllStackTraces; } | |
473 void doit(); | |
474 jint final_thread_count() { return _final_thread_count; } | |
475 }; | |
476 | |
477 // VM operation to get stack trace at safepoint. | |
478 class VM_GetThreadListStackTraces : public VM_GetMultipleStackTraces { | |
479 private: | |
480 jint _thread_count; | |
481 const jthread* _thread_list; | |
482 | |
483 public: | |
484 VM_GetThreadListStackTraces(JvmtiEnv *env, jint thread_count, const jthread* thread_list, jint max_frame_count) | |
485 : VM_GetMultipleStackTraces(env, max_frame_count) { | |
486 _thread_count = thread_count; | |
487 _thread_list = thread_list; | |
488 } | |
489 VMOp_Type type() const { return VMOp_GetThreadListStackTraces; } | |
490 void doit(); | |
491 }; | |
492 | |
493 | |
494 // VM operation to count stack frames at safepoint. | |
495 class VM_GetFrameCount : public VM_Operation { | |
496 private: | |
497 JvmtiEnv *_env; | |
498 JvmtiThreadState *_state; | |
499 jint *_count_ptr; | |
500 jvmtiError _result; | |
501 | |
502 public: | |
503 VM_GetFrameCount(JvmtiEnv *env, JvmtiThreadState *state, jint *count_ptr) { | |
504 _env = env; | |
505 _state = state; | |
506 _count_ptr = count_ptr; | |
507 } | |
508 VMOp_Type type() const { return VMOp_GetFrameCount; } | |
509 jvmtiError result() { return _result; } | |
510 void doit() { | |
511 _result = ((JvmtiEnvBase*)_env)->get_frame_count(_state, _count_ptr); | |
512 } | |
513 }; | |
514 | |
515 // VM operation to frame location at safepoint. | |
516 class VM_GetFrameLocation : public VM_Operation { | |
517 private: | |
518 JvmtiEnv *_env; | |
519 JavaThread* _java_thread; | |
520 jint _depth; | |
521 jmethodID* _method_ptr; | |
522 jlocation* _location_ptr; | |
523 jvmtiError _result; | |
524 | |
525 public: | |
526 VM_GetFrameLocation(JvmtiEnv *env, JavaThread* java_thread, jint depth, | |
527 jmethodID* method_ptr, jlocation* location_ptr) { | |
528 _env = env; | |
529 _java_thread = java_thread; | |
530 _depth = depth; | |
531 _method_ptr = method_ptr; | |
532 _location_ptr = location_ptr; | |
533 } | |
534 VMOp_Type type() const { return VMOp_GetFrameLocation; } | |
535 jvmtiError result() { return _result; } | |
536 void doit() { | |
537 _result = ((JvmtiEnvBase*)_env)->get_frame_location(_java_thread, _depth, | |
538 _method_ptr, _location_ptr); | |
539 } | |
540 }; | |
541 | |
542 | |
543 // ResourceTracker | |
544 // | |
545 // ResourceTracker works a little like a ResourceMark. All allocates | |
546 // using the resource tracker are recorded. If an allocate using the | |
547 // resource tracker fails the destructor will free any resources | |
548 // that were allocated using the tracker. | |
549 // The motive for this class is to avoid messy error recovery code | |
550 // in situations where multiple allocations are done in sequence. If | |
551 // the second or subsequent allocation fails it avoids any code to | |
552 // release memory allocated in the previous calls. | |
553 // | |
554 // Usage :- | |
555 // ResourceTracker rt(env); | |
556 // : | |
557 // err = rt.allocate(1024, &ptr); | |
558 | |
559 class ResourceTracker : public StackObj { | |
560 private: | |
561 JvmtiEnv* _env; | |
562 GrowableArray<unsigned char*> *_allocations; | |
563 bool _failed; | |
564 public: | |
565 ResourceTracker(JvmtiEnv* env); | |
566 ~ResourceTracker(); | |
567 jvmtiError allocate(jlong size, unsigned char** mem_ptr); | |
568 unsigned char* allocate(jlong size); | |
569 char* strdup(const char* str); | |
570 }; | |
571 | |
572 | |
573 // Jvmti monitor closure to collect off stack monitors. | |
574 class JvmtiMonitorClosure: public MonitorClosure { | |
575 private: | |
576 JavaThread *_java_thread; | |
577 JavaThread *_calling_thread; | |
578 GrowableArray<jvmtiMonitorStackDepthInfo*> *_owned_monitors_list; | |
579 jvmtiError _error; | |
580 JvmtiEnvBase *_env; | |
581 | |
582 public: | |
583 JvmtiMonitorClosure(JavaThread* thread, JavaThread *calling_thread, | |
584 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors, | |
585 JvmtiEnvBase *env) { | |
586 _java_thread = thread; | |
587 _calling_thread = calling_thread; | |
588 _owned_monitors_list = owned_monitors; | |
589 _error = JVMTI_ERROR_NONE; | |
590 _env = env; | |
591 } | |
592 void do_monitor(ObjectMonitor* mon); | |
593 jvmtiError error() { return _error;} | |
594 }; | |
595 | |
596 #endif /* _JAVA_JVMTIENVBASE_H_ */ |