Tue, 17 Oct 2017 12:58:25 +0800
merge
1 /*
2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #include "precompiled.hpp"
26 #include "interpreter/interpreter.hpp"
27 #include "jvmtifiles/jvmtiEnv.hpp"
28 #include "memory/resourceArea.hpp"
29 #include "prims/jvmtiEventController.hpp"
30 #include "prims/jvmtiEventController.inline.hpp"
31 #include "prims/jvmtiExport.hpp"
32 #include "prims/jvmtiImpl.hpp"
33 #include "prims/jvmtiThreadState.inline.hpp"
34 #include "runtime/frame.hpp"
35 #include "runtime/thread.hpp"
36 #include "runtime/vframe.hpp"
37 #include "runtime/vframe_hp.hpp"
38 #include "runtime/vmThread.hpp"
39 #include "runtime/vm_operations.hpp"
41 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
43 #ifdef JVMTI_TRACE
44 #define EC_TRACE(out) do { \
45 if (JvmtiTrace::trace_event_controller()) { \
46 SafeResourceMark rm; \
47 tty->print_cr out; \
48 } \
49 } while (0)
50 #else
51 #define EC_TRACE(out)
52 #endif /*JVMTI_TRACE */
54 // bits for standard events
56 static const jlong SINGLE_STEP_BIT = (((jlong)1) << (JVMTI_EVENT_SINGLE_STEP - TOTAL_MIN_EVENT_TYPE_VAL));
57 static const jlong FRAME_POP_BIT = (((jlong)1) << (JVMTI_EVENT_FRAME_POP - TOTAL_MIN_EVENT_TYPE_VAL));
58 static const jlong BREAKPOINT_BIT = (((jlong)1) << (JVMTI_EVENT_BREAKPOINT - TOTAL_MIN_EVENT_TYPE_VAL));
59 static const jlong FIELD_ACCESS_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_ACCESS - TOTAL_MIN_EVENT_TYPE_VAL));
60 static const jlong FIELD_MODIFICATION_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_MODIFICATION - TOTAL_MIN_EVENT_TYPE_VAL));
61 static const jlong METHOD_ENTRY_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_ENTRY - TOTAL_MIN_EVENT_TYPE_VAL));
62 static const jlong METHOD_EXIT_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_EXIT - TOTAL_MIN_EVENT_TYPE_VAL));
63 static const jlong CLASS_FILE_LOAD_HOOK_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_FILE_LOAD_HOOK - TOTAL_MIN_EVENT_TYPE_VAL));
64 static const jlong NATIVE_METHOD_BIND_BIT = (((jlong)1) << (JVMTI_EVENT_NATIVE_METHOD_BIND - TOTAL_MIN_EVENT_TYPE_VAL));
65 static const jlong VM_START_BIT = (((jlong)1) << (JVMTI_EVENT_VM_START - TOTAL_MIN_EVENT_TYPE_VAL));
66 static const jlong VM_INIT_BIT = (((jlong)1) << (JVMTI_EVENT_VM_INIT - TOTAL_MIN_EVENT_TYPE_VAL));
67 static const jlong VM_DEATH_BIT = (((jlong)1) << (JVMTI_EVENT_VM_DEATH - TOTAL_MIN_EVENT_TYPE_VAL));
68 static const jlong CLASS_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_LOAD - TOTAL_MIN_EVENT_TYPE_VAL));
69 static const jlong CLASS_PREPARE_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_PREPARE - TOTAL_MIN_EVENT_TYPE_VAL));
70 static const jlong THREAD_START_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_START - TOTAL_MIN_EVENT_TYPE_VAL));
71 static const jlong THREAD_END_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_END - TOTAL_MIN_EVENT_TYPE_VAL));
72 static const jlong EXCEPTION_THROW_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION - TOTAL_MIN_EVENT_TYPE_VAL));
73 static const jlong EXCEPTION_CATCH_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION_CATCH - TOTAL_MIN_EVENT_TYPE_VAL));
74 static const jlong MONITOR_CONTENDED_ENTER_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTER - TOTAL_MIN_EVENT_TYPE_VAL));
75 static const jlong MONITOR_CONTENDED_ENTERED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTERED - TOTAL_MIN_EVENT_TYPE_VAL));
76 static const jlong MONITOR_WAIT_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAIT - TOTAL_MIN_EVENT_TYPE_VAL));
77 static const jlong MONITOR_WAITED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAITED - TOTAL_MIN_EVENT_TYPE_VAL));
78 static const jlong DYNAMIC_CODE_GENERATED_BIT = (((jlong)1) << (JVMTI_EVENT_DYNAMIC_CODE_GENERATED - TOTAL_MIN_EVENT_TYPE_VAL));
79 static const jlong DATA_DUMP_BIT = (((jlong)1) << (JVMTI_EVENT_DATA_DUMP_REQUEST - TOTAL_MIN_EVENT_TYPE_VAL));
80 static const jlong COMPILED_METHOD_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_LOAD - TOTAL_MIN_EVENT_TYPE_VAL));
81 static const jlong COMPILED_METHOD_UNLOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL));
82 static const jlong GARBAGE_COLLECTION_START_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_START - TOTAL_MIN_EVENT_TYPE_VAL));
83 static const jlong GARBAGE_COLLECTION_FINISH_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_FINISH - TOTAL_MIN_EVENT_TYPE_VAL));
84 static const jlong OBJECT_FREE_BIT = (((jlong)1) << (JVMTI_EVENT_OBJECT_FREE - TOTAL_MIN_EVENT_TYPE_VAL));
85 static const jlong RESOURCE_EXHAUSTED_BIT = (((jlong)1) << (JVMTI_EVENT_RESOURCE_EXHAUSTED - TOTAL_MIN_EVENT_TYPE_VAL));
86 static const jlong VM_OBJECT_ALLOC_BIT = (((jlong)1) << (JVMTI_EVENT_VM_OBJECT_ALLOC - TOTAL_MIN_EVENT_TYPE_VAL));
88 // bits for extension events
89 static const jlong CLASS_UNLOAD_BIT = (((jlong)1) << (EXT_EVENT_CLASS_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL));
92 static const jlong MONITOR_BITS = MONITOR_CONTENDED_ENTER_BIT | MONITOR_CONTENDED_ENTERED_BIT |
93 MONITOR_WAIT_BIT | MONITOR_WAITED_BIT;
94 static const jlong EXCEPTION_BITS = EXCEPTION_THROW_BIT | EXCEPTION_CATCH_BIT;
95 static const jlong INTERP_EVENT_BITS = SINGLE_STEP_BIT | METHOD_ENTRY_BIT | METHOD_EXIT_BIT |
96 FRAME_POP_BIT | FIELD_ACCESS_BIT | FIELD_MODIFICATION_BIT;
97 static const jlong THREAD_FILTERED_EVENT_BITS = INTERP_EVENT_BITS | EXCEPTION_BITS | MONITOR_BITS |
98 BREAKPOINT_BIT | CLASS_LOAD_BIT | CLASS_PREPARE_BIT | THREAD_END_BIT;
99 static const jlong NEED_THREAD_LIFE_EVENTS = THREAD_FILTERED_EVENT_BITS | THREAD_START_BIT;
100 static const jlong EARLY_EVENT_BITS = CLASS_FILE_LOAD_HOOK_BIT |
101 VM_START_BIT | VM_INIT_BIT | VM_DEATH_BIT | NATIVE_METHOD_BIND_BIT |
102 THREAD_START_BIT | THREAD_END_BIT |
103 DYNAMIC_CODE_GENERATED_BIT;
104 static const jlong GLOBAL_EVENT_BITS = ~THREAD_FILTERED_EVENT_BITS;
105 static const jlong SHOULD_POST_ON_EXCEPTIONS_BITS = EXCEPTION_BITS | METHOD_EXIT_BIT | FRAME_POP_BIT;
107 ///////////////////////////////////////////////////////////////
108 //
109 // JvmtiEventEnabled
110 //
112 JvmtiEventEnabled::JvmtiEventEnabled() {
113 clear();
114 }
117 void JvmtiEventEnabled::clear() {
118 _enabled_bits = 0;
119 #ifndef PRODUCT
120 _init_guard = JEE_INIT_GUARD;
121 #endif
122 }
124 void JvmtiEventEnabled::set_enabled(jvmtiEvent event_type, bool enabled) {
125 jlong bits = get_bits();
126 jlong mask = bit_for(event_type);
127 if (enabled) {
128 bits |= mask;
129 } else {
130 bits &= ~mask;
131 }
132 set_bits(bits);
133 }
136 ///////////////////////////////////////////////////////////////
137 //
138 // JvmtiEnvThreadEventEnable
139 //
141 JvmtiEnvThreadEventEnable::JvmtiEnvThreadEventEnable() {
142 _event_user_enabled.clear();
143 _event_enabled.clear();
144 }
147 JvmtiEnvThreadEventEnable::~JvmtiEnvThreadEventEnable() {
148 _event_user_enabled.clear();
149 _event_enabled.clear();
150 }
153 ///////////////////////////////////////////////////////////////
154 //
155 // JvmtiThreadEventEnable
156 //
158 JvmtiThreadEventEnable::JvmtiThreadEventEnable() {
159 _event_enabled.clear();
160 }
163 JvmtiThreadEventEnable::~JvmtiThreadEventEnable() {
164 _event_enabled.clear();
165 }
168 ///////////////////////////////////////////////////////////////
169 //
170 // JvmtiEnvEventEnable
171 //
173 JvmtiEnvEventEnable::JvmtiEnvEventEnable() {
174 _event_user_enabled.clear();
175 _event_callback_enabled.clear();
176 _event_enabled.clear();
177 }
180 JvmtiEnvEventEnable::~JvmtiEnvEventEnable() {
181 _event_user_enabled.clear();
182 _event_callback_enabled.clear();
183 _event_enabled.clear();
184 }
187 ///////////////////////////////////////////////////////////////
188 //
189 // VM_EnterInterpOnlyMode
190 //
192 class VM_EnterInterpOnlyMode : public VM_Operation {
193 private:
194 JvmtiThreadState *_state;
196 public:
197 VM_EnterInterpOnlyMode(JvmtiThreadState *state);
199 bool allow_nested_vm_operations() const { return true; }
200 VMOp_Type type() const { return VMOp_EnterInterpOnlyMode; }
201 void doit();
203 // to do: this same function is in jvmtiImpl - should be in one place
204 bool can_be_deoptimized(vframe* vf) {
205 return (vf->is_compiled_frame() && vf->fr().can_be_deoptimized());
206 }
207 };
209 VM_EnterInterpOnlyMode::VM_EnterInterpOnlyMode(JvmtiThreadState *state)
210 : _state(state)
211 {
212 }
215 void VM_EnterInterpOnlyMode::doit() {
216 // Set up the current stack depth for later tracking
217 _state->invalidate_cur_stack_depth();
219 _state->enter_interp_only_mode();
221 JavaThread *thread = _state->get_thread();
222 if (thread->has_last_Java_frame()) {
223 // If running in fullspeed mode, single stepping is implemented
224 // as follows: first, the interpreter does not dispatch to
225 // compiled code for threads that have single stepping enabled;
226 // second, we deoptimize all methods on the thread's stack when
227 // interpreted-only mode is enabled the first time for a given
228 // thread (nothing to do if no Java frames yet).
229 int num_marked = 0;
230 ResourceMark resMark;
231 RegisterMap rm(thread, false);
232 for (vframe* vf = thread->last_java_vframe(&rm); vf; vf = vf->sender()) {
233 if (can_be_deoptimized(vf)) {
234 ((compiledVFrame*) vf)->code()->mark_for_deoptimization();
235 ++num_marked;
236 }
237 }
238 if (num_marked > 0) {
239 VM_Deoptimize op;
240 VMThread::execute(&op);
241 }
242 }
243 }
246 ///////////////////////////////////////////////////////////////
247 //
248 // VM_ChangeSingleStep
249 //
251 class VM_ChangeSingleStep : public VM_Operation {
252 private:
253 bool _on;
255 public:
256 VM_ChangeSingleStep(bool on);
257 VMOp_Type type() const { return VMOp_ChangeSingleStep; }
258 bool allow_nested_vm_operations() const { return true; }
259 void doit(); // method definition is after definition of JvmtiEventControllerPrivate because of scoping
260 };
263 VM_ChangeSingleStep::VM_ChangeSingleStep(bool on)
264 : _on(on != 0)
265 {
266 }
271 ///////////////////////////////////////////////////////////////
272 //
273 // JvmtiEventControllerPrivate
274 //
275 // Private internal implementation methods for JvmtiEventController.
276 //
277 // These methods are thread safe either because they are called
278 // in early VM initialization which is single threaded, or they
279 // hold the JvmtiThreadState_lock.
280 //
282 class JvmtiEventControllerPrivate : public AllStatic {
283 static bool _initialized;
284 public:
285 static void set_should_post_single_step(bool on);
286 static void enter_interp_only_mode(JvmtiThreadState *state);
287 static void leave_interp_only_mode(JvmtiThreadState *state);
288 static void recompute_enabled();
289 static jlong recompute_env_enabled(JvmtiEnvBase* env);
290 static jlong recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state);
291 static jlong recompute_thread_enabled(JvmtiThreadState *state);
292 static void event_init();
294 static void set_user_enabled(JvmtiEnvBase *env, JavaThread *thread,
295 jvmtiEvent event_type, bool enabled);
296 static void set_event_callbacks(JvmtiEnvBase *env,
297 const jvmtiEventCallbacks* callbacks,
298 jint size_of_callbacks);
300 static void set_extension_event_callback(JvmtiEnvBase *env,
301 jint extension_event_index,
302 jvmtiExtensionEvent callback);
304 static void set_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop);
305 static void clear_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop);
306 static void clear_to_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop);
307 static void change_field_watch(jvmtiEvent event_type, bool added);
309 static void thread_started(JavaThread *thread);
310 static void thread_ended(JavaThread *thread);
312 static void env_initialize(JvmtiEnvBase *env);
313 static void env_dispose(JvmtiEnvBase *env);
315 static void vm_start();
316 static void vm_init();
317 static void vm_death();
319 static void trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed);
320 static void trace_changed(jlong now_enabled, jlong changed);
321 };
323 bool JvmtiEventControllerPrivate::_initialized = false;
325 void JvmtiEventControllerPrivate::set_should_post_single_step(bool on) {
326 // we have permission to do this, VM op doesn't
327 JvmtiExport::set_should_post_single_step(on);
328 }
331 // This change must always be occur when at a safepoint.
332 // Being at a safepoint causes the interpreter to use the
333 // safepoint dispatch table which we overload to find single
334 // step points. Just to be sure that it has been set, we
335 // call notice_safepoints when turning on single stepping.
336 // When we leave our current safepoint, should_post_single_step
337 // will be checked by the interpreter, and the table kept
338 // or changed accordingly.
339 void VM_ChangeSingleStep::doit() {
340 JvmtiEventControllerPrivate::set_should_post_single_step(_on);
341 if (_on) {
342 Interpreter::notice_safepoints();
343 }
344 }
347 void JvmtiEventControllerPrivate::enter_interp_only_mode(JvmtiThreadState *state) {
348 EC_TRACE(("JVMTI [%s] # Entering interpreter only mode",
349 JvmtiTrace::safe_get_thread_name(state->get_thread())));
351 VM_EnterInterpOnlyMode op(state);
352 VMThread::execute(&op);
353 }
356 void
357 JvmtiEventControllerPrivate::leave_interp_only_mode(JvmtiThreadState *state) {
358 EC_TRACE(("JVMTI [%s] # Leaving interpreter only mode",
359 JvmtiTrace::safe_get_thread_name(state->get_thread())));
360 state->leave_interp_only_mode();
361 }
364 void
365 JvmtiEventControllerPrivate::trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed) {
366 #ifdef JVMTI_TRACE
367 if (JvmtiTrace::trace_event_controller()) {
368 SafeResourceMark rm;
369 // traces standard events only
370 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) {
371 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei);
372 if (changed & bit) {
373 // it changed, print it
374 tty->print_cr("JVMTI [%s] # %s event %s",
375 JvmtiTrace::safe_get_thread_name(state->get_thread()),
376 (now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei));
377 }
378 }
379 }
380 #endif /*JVMTI_TRACE */
381 }
384 void
385 JvmtiEventControllerPrivate::trace_changed(jlong now_enabled, jlong changed) {
386 #ifdef JVMTI_TRACE
387 if (JvmtiTrace::trace_event_controller()) {
388 SafeResourceMark rm;
389 // traces standard events only
390 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) {
391 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei);
392 if (changed & bit) {
393 // it changed, print it
394 tty->print_cr("JVMTI [-] # %s event %s",
395 (now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei));
396 }
397 }
398 }
399 #endif /*JVMTI_TRACE */
400 }
403 // For the specified env: compute the currently truly enabled events
404 // set external state accordingly.
405 // Return value and set value must include all events.
406 // But outside this class, only non-thread-filtered events can be queried..
407 jlong
408 JvmtiEventControllerPrivate::recompute_env_enabled(JvmtiEnvBase* env) {
409 jlong was_enabled = env->env_event_enable()->_event_enabled.get_bits();
410 jlong now_enabled =
411 env->env_event_enable()->_event_callback_enabled.get_bits() &
412 env->env_event_enable()->_event_user_enabled.get_bits();
414 switch (JvmtiEnv::get_phase()) {
415 case JVMTI_PHASE_PRIMORDIAL:
416 case JVMTI_PHASE_ONLOAD:
417 // only these events allowed in primordial or onload phase
418 now_enabled &= (EARLY_EVENT_BITS & ~THREAD_FILTERED_EVENT_BITS);
419 break;
420 case JVMTI_PHASE_START:
421 // only these events allowed in start phase
422 now_enabled &= EARLY_EVENT_BITS;
423 break;
424 case JVMTI_PHASE_LIVE:
425 // all events allowed during live phase
426 break;
427 case JVMTI_PHASE_DEAD:
428 // no events allowed when dead
429 now_enabled = 0;
430 break;
431 default:
432 assert(false, "no other phases - sanity check");
433 break;
434 }
436 // will we really send these events to this env
437 env->env_event_enable()->_event_enabled.set_bits(now_enabled);
439 trace_changed(now_enabled, (now_enabled ^ was_enabled) & ~THREAD_FILTERED_EVENT_BITS);
441 return now_enabled;
442 }
445 // For the specified env and thread: compute the currently truly enabled events
446 // set external state accordingly. Only thread-filtered events are included.
447 jlong
448 JvmtiEventControllerPrivate::recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state) {
449 JvmtiEnv *env = ets->get_env();
451 jlong was_enabled = ets->event_enable()->_event_enabled.get_bits();
452 jlong now_enabled = THREAD_FILTERED_EVENT_BITS &
453 env->env_event_enable()->_event_callback_enabled.get_bits() &
454 (env->env_event_enable()->_event_user_enabled.get_bits() |
455 ets->event_enable()->_event_user_enabled.get_bits());
457 // for frame pops and field watchs, computed enabled state
458 // is only true if an event has been requested
459 if (!ets->has_frame_pops()) {
460 now_enabled &= ~FRAME_POP_BIT;
461 }
462 if (*((int *)JvmtiExport::get_field_access_count_addr()) == 0) {
463 now_enabled &= ~FIELD_ACCESS_BIT;
464 }
465 if (*((int *)JvmtiExport::get_field_modification_count_addr()) == 0) {
466 now_enabled &= ~FIELD_MODIFICATION_BIT;
467 }
469 switch (JvmtiEnv::get_phase()) {
470 case JVMTI_PHASE_DEAD:
471 // no events allowed when dead
472 now_enabled = 0;
473 break;
474 }
476 // if anything changed do update
477 if (now_enabled != was_enabled) {
479 // will we really send these events to this thread x env
480 ets->event_enable()->_event_enabled.set_bits(now_enabled);
482 // If the enabled status of the single step or breakpoint events changed,
483 // the location status may need to change as well.
484 jlong changed = now_enabled ^ was_enabled;
485 if (changed & SINGLE_STEP_BIT) {
486 ets->reset_current_location(JVMTI_EVENT_SINGLE_STEP, (now_enabled & SINGLE_STEP_BIT) != 0);
487 }
488 if (changed & BREAKPOINT_BIT) {
489 ets->reset_current_location(JVMTI_EVENT_BREAKPOINT, (now_enabled & BREAKPOINT_BIT) != 0);
490 }
491 trace_changed(state, now_enabled, changed);
492 }
493 return now_enabled;
494 }
497 // For the specified thread: compute the currently truly enabled events
498 // set external state accordingly. Only thread-filtered events are included.
499 jlong
500 JvmtiEventControllerPrivate::recompute_thread_enabled(JvmtiThreadState *state) {
501 if (state == NULL) {
502 // associated JavaThread is exiting
503 return (jlong)0;
504 }
506 jlong was_any_env_enabled = state->thread_event_enable()->_event_enabled.get_bits();
507 jlong any_env_enabled = 0;
509 {
510 // This iteration will include JvmtiEnvThreadStates whoses environments
511 // have been disposed. These JvmtiEnvThreadStates must not be filtered
512 // as recompute must be called on them to disable their events,
513 JvmtiEnvThreadStateIterator it(state);
514 for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) {
515 any_env_enabled |= recompute_env_thread_enabled(ets, state);
516 }
517 }
519 if (any_env_enabled != was_any_env_enabled) {
520 // mark if event is truly enabled on this thread in any environment
521 state->thread_event_enable()->_event_enabled.set_bits(any_env_enabled);
523 // compute interp_only mode
524 bool should_be_interp = (any_env_enabled & INTERP_EVENT_BITS) != 0;
525 bool is_now_interp = state->is_interp_only_mode();
527 if (should_be_interp != is_now_interp) {
528 if (should_be_interp) {
529 enter_interp_only_mode(state);
530 } else {
531 leave_interp_only_mode(state);
532 }
533 }
535 // update the JavaThread cached value for thread-specific should_post_on_exceptions value
536 bool should_post_on_exceptions = (any_env_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0;
537 state->set_should_post_on_exceptions(should_post_on_exceptions);
538 }
540 return any_env_enabled;
541 }
544 // Compute truly enabled events - meaning if the event can and could be
545 // sent. An event is truly enabled if it is user enabled on the thread
546 // or globally user enabled, but only if there is a callback or event hook
547 // for it and, for field watch and frame pop, one has been set.
548 // Compute if truly enabled, per thread, per environment, per combination
549 // (thread x environment), and overall. These merges are true if any is true.
550 // True per thread if some environment has callback set and the event is globally
551 // enabled or enabled for this thread.
552 // True per environment if the callback is set and the event is globally
553 // enabled in this environment or enabled for any thread in this environment.
554 // True per combination if the environment has the callback set and the
555 // event is globally enabled in this environment or the event is enabled
556 // for this thread and environment.
557 //
558 // All states transitions dependent on these transitions are also handled here.
559 void
560 JvmtiEventControllerPrivate::recompute_enabled() {
561 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
563 // event enabled for any thread in any environment
564 jlong was_any_env_thread_enabled = JvmtiEventController::_universal_global_event_enabled.get_bits();
565 jlong any_env_thread_enabled = 0;
567 EC_TRACE(("JVMTI [-] # recompute enabled - before %llx", was_any_env_thread_enabled));
569 // compute non-thread-filters events.
570 // This must be done separately from thread-filtered events, since some
571 // events can occur before any threads exist.
572 JvmtiEnvIterator it;
573 for (JvmtiEnvBase* env = it.first(); env != NULL; env = it.next(env)) {
574 any_env_thread_enabled |= recompute_env_enabled(env);
575 }
577 // We need to create any missing jvmti_thread_state if there are globally set thread
578 // filtered events and there weren't last time
579 if ( (any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) != 0 &&
580 (was_any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) == 0) {
581 assert(JvmtiEnv::is_vm_live() || (JvmtiEnv::get_phase()==JVMTI_PHASE_START),
582 "thread filtered events should not be enabled when VM not in start or live phase");
583 {
584 MutexLocker mu(Threads_lock); //hold the Threads_lock for the iteration
585 for (JavaThread *tp = Threads::first(); tp != NULL; tp = tp->next()) {
586 // state_for_while_locked() makes tp->is_exiting() check
587 JvmtiThreadState::state_for_while_locked(tp); // create the thread state if missing
588 }
589 }// release Threads_lock
590 }
592 // compute and set thread-filtered events
593 for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) {
594 any_env_thread_enabled |= recompute_thread_enabled(state);
595 }
597 // set universal state (across all envs and threads)
598 jlong delta = any_env_thread_enabled ^ was_any_env_thread_enabled;
599 if (delta != 0) {
600 JvmtiExport::set_should_post_field_access((any_env_thread_enabled & FIELD_ACCESS_BIT) != 0);
601 JvmtiExport::set_should_post_field_modification((any_env_thread_enabled & FIELD_MODIFICATION_BIT) != 0);
602 JvmtiExport::set_should_post_class_load((any_env_thread_enabled & CLASS_LOAD_BIT) != 0);
603 JvmtiExport::set_should_post_class_file_load_hook((any_env_thread_enabled & CLASS_FILE_LOAD_HOOK_BIT) != 0);
604 JvmtiExport::set_should_post_native_method_bind((any_env_thread_enabled & NATIVE_METHOD_BIND_BIT) != 0);
605 JvmtiExport::set_should_post_dynamic_code_generated((any_env_thread_enabled & DYNAMIC_CODE_GENERATED_BIT) != 0);
606 JvmtiExport::set_should_post_data_dump((any_env_thread_enabled & DATA_DUMP_BIT) != 0);
607 JvmtiExport::set_should_post_class_prepare((any_env_thread_enabled & CLASS_PREPARE_BIT) != 0);
608 JvmtiExport::set_should_post_class_unload((any_env_thread_enabled & CLASS_UNLOAD_BIT) != 0);
609 JvmtiExport::set_should_post_monitor_contended_enter((any_env_thread_enabled & MONITOR_CONTENDED_ENTER_BIT) != 0);
610 JvmtiExport::set_should_post_monitor_contended_entered((any_env_thread_enabled & MONITOR_CONTENDED_ENTERED_BIT) != 0);
611 JvmtiExport::set_should_post_monitor_wait((any_env_thread_enabled & MONITOR_WAIT_BIT) != 0);
612 JvmtiExport::set_should_post_monitor_waited((any_env_thread_enabled & MONITOR_WAITED_BIT) != 0);
613 JvmtiExport::set_should_post_garbage_collection_start((any_env_thread_enabled & GARBAGE_COLLECTION_START_BIT) != 0);
614 JvmtiExport::set_should_post_garbage_collection_finish((any_env_thread_enabled & GARBAGE_COLLECTION_FINISH_BIT) != 0);
615 JvmtiExport::set_should_post_object_free((any_env_thread_enabled & OBJECT_FREE_BIT) != 0);
616 JvmtiExport::set_should_post_resource_exhausted((any_env_thread_enabled & RESOURCE_EXHAUSTED_BIT) != 0);
617 JvmtiExport::set_should_post_compiled_method_load((any_env_thread_enabled & COMPILED_METHOD_LOAD_BIT) != 0);
618 JvmtiExport::set_should_post_compiled_method_unload((any_env_thread_enabled & COMPILED_METHOD_UNLOAD_BIT) != 0);
619 JvmtiExport::set_should_post_vm_object_alloc((any_env_thread_enabled & VM_OBJECT_ALLOC_BIT) != 0);
621 // need this if we want thread events or we need them to init data
622 JvmtiExport::set_should_post_thread_life((any_env_thread_enabled & NEED_THREAD_LIFE_EVENTS) != 0);
624 // If single stepping is turned on or off, execute the VM op to change it.
625 if (delta & SINGLE_STEP_BIT) {
626 switch (JvmtiEnv::get_phase()) {
627 case JVMTI_PHASE_DEAD:
628 // If the VM is dying we can't execute VM ops
629 break;
630 case JVMTI_PHASE_LIVE: {
631 VM_ChangeSingleStep op((any_env_thread_enabled & SINGLE_STEP_BIT) != 0);
632 VMThread::execute(&op);
633 break;
634 }
635 default:
636 assert(false, "should never come here before live phase");
637 break;
638 }
639 }
641 // set global truly enabled, that is, any thread in any environment
642 JvmtiEventController::_universal_global_event_enabled.set_bits(any_env_thread_enabled);
644 // set global should_post_on_exceptions
645 JvmtiExport::set_should_post_on_exceptions((any_env_thread_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0);
647 }
649 EC_TRACE(("JVMTI [-] # recompute enabled - after %llx", any_env_thread_enabled));
650 }
653 void
654 JvmtiEventControllerPrivate::thread_started(JavaThread *thread) {
655 assert(thread->is_Java_thread(), "Must be JavaThread");
656 assert(thread == Thread::current(), "must be current thread");
657 assert(JvmtiEnvBase::environments_might_exist(), "to enter event controller, JVM TI environments must exist");
659 EC_TRACE(("JVMTI [%s] # thread started", JvmtiTrace::safe_get_thread_name(thread)));
661 // if we have any thread filtered events globally enabled, create/update the thread state
662 if ((JvmtiEventController::_universal_global_event_enabled.get_bits() & THREAD_FILTERED_EVENT_BITS) != 0) {
663 MutexLocker mu(JvmtiThreadState_lock);
664 // create the thread state if missing
665 JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread);
666 if (state != NULL) { // skip threads with no JVMTI thread state
667 recompute_thread_enabled(state);
668 }
669 }
670 }
673 void
674 JvmtiEventControllerPrivate::thread_ended(JavaThread *thread) {
675 // Removes the JvmtiThreadState associated with the specified thread.
676 // May be called after all environments have been disposed.
677 assert(JvmtiThreadState_lock->is_locked(), "sanity check");
679 EC_TRACE(("JVMTI [%s] # thread ended", JvmtiTrace::safe_get_thread_name(thread)));
681 JvmtiThreadState *state = thread->jvmti_thread_state();
682 assert(state != NULL, "else why are we here?");
683 delete state;
684 }
686 void JvmtiEventControllerPrivate::set_event_callbacks(JvmtiEnvBase *env,
687 const jvmtiEventCallbacks* callbacks,
688 jint size_of_callbacks) {
689 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
690 EC_TRACE(("JVMTI [*] # set event callbacks"));
692 env->set_event_callbacks(callbacks, size_of_callbacks);
693 jlong enabled_bits = 0;
694 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) {
695 jvmtiEvent evt_t = (jvmtiEvent)ei;
696 if (env->has_callback(evt_t)) {
697 enabled_bits |= JvmtiEventEnabled::bit_for(evt_t);
698 }
699 }
700 env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits);
701 recompute_enabled();
702 }
704 void
705 JvmtiEventControllerPrivate::set_extension_event_callback(JvmtiEnvBase *env,
706 jint extension_event_index,
707 jvmtiExtensionEvent callback)
708 {
709 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
710 EC_TRACE(("JVMTI [*] # set extension event callback"));
712 // extension events are allocated below JVMTI_MIN_EVENT_TYPE_VAL
713 assert(extension_event_index >= (jint)EXT_MIN_EVENT_TYPE_VAL &&
714 extension_event_index <= (jint)EXT_MAX_EVENT_TYPE_VAL, "sanity check");
717 // As the bits for both standard (jvmtiEvent) and extension
718 // (jvmtiExtEvents) are stored in the same word we cast here to
719 // jvmtiEvent to set/clear the bit for this extension event.
720 jvmtiEvent event_type = (jvmtiEvent)extension_event_index;
722 // Prevent a possible race condition where events are re-enabled by a call to
723 // set event callbacks, where the DisposeEnvironment occurs after the boiler-plate
724 // environment check and before the lock is acquired.
725 // We can safely do the is_valid check now, as JvmtiThreadState_lock is held.
726 bool enabling = (callback != NULL) && (env->is_valid());
727 env->env_event_enable()->set_user_enabled(event_type, enabling);
729 // update the callback
730 jvmtiExtEventCallbacks* ext_callbacks = env->ext_callbacks();
731 switch (extension_event_index) {
732 case EXT_EVENT_CLASS_UNLOAD :
733 ext_callbacks->ClassUnload = callback;
734 break;
735 default:
736 ShouldNotReachHere();
737 }
739 // update the callback enable/disable bit
740 jlong enabled_bits = env->env_event_enable()->_event_callback_enabled.get_bits();
741 jlong bit_for = JvmtiEventEnabled::bit_for(event_type);
742 if (enabling) {
743 enabled_bits |= bit_for;
744 } else {
745 enabled_bits &= ~bit_for;
746 }
747 env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits);
749 recompute_enabled();
750 }
753 void
754 JvmtiEventControllerPrivate::env_initialize(JvmtiEnvBase *env) {
755 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
756 EC_TRACE(("JVMTI [*] # env initialize"));
758 if (JvmtiEnvBase::is_vm_live()) {
759 // if we didn't initialize event info already (this is a late
760 // launched environment), do it now.
761 event_init();
762 }
764 env->initialize();
766 // add the JvmtiEnvThreadState to each JvmtiThreadState
767 for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) {
768 state->add_env(env);
769 assert((JvmtiEnv*)(state->env_thread_state(env)->get_env()) == env, "sanity check");
770 }
771 JvmtiEventControllerPrivate::recompute_enabled();
772 }
775 void
776 JvmtiEventControllerPrivate::env_dispose(JvmtiEnvBase *env) {
777 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
778 EC_TRACE(("JVMTI [*] # env dispose"));
780 // Before the environment is marked disposed, disable all events on this
781 // environment (by zapping the callbacks). As a result, the disposed
782 // environment will not call event handlers.
783 set_event_callbacks(env, NULL, 0);
784 for (jint extension_event_index = EXT_MIN_EVENT_TYPE_VAL;
785 extension_event_index <= EXT_MAX_EVENT_TYPE_VAL;
786 ++extension_event_index) {
787 set_extension_event_callback(env, extension_event_index, NULL);
788 }
790 // Let the environment finish disposing itself.
791 env->env_dispose();
792 }
795 void
796 JvmtiEventControllerPrivate::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread,
797 jvmtiEvent event_type, bool enabled) {
798 assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
800 EC_TRACE(("JVMTI [%s] # user %s event %s",
801 thread==NULL? "ALL": JvmtiTrace::safe_get_thread_name(thread),
802 enabled? "enabled" : "disabled", JvmtiTrace::event_name(event_type)));
804 if (thread == NULL) {
805 env->env_event_enable()->set_user_enabled(event_type, enabled);
806 } else {
807 // create the thread state (if it didn't exist before)
808 JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread);
809 if (state != NULL) {
810 state->env_thread_state(env)->event_enable()->set_user_enabled(event_type, enabled);
811 }
812 }
813 recompute_enabled();
814 }
817 void
818 JvmtiEventControllerPrivate::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
819 EC_TRACE(("JVMTI [%s] # set frame pop - frame=%d",
820 JvmtiTrace::safe_get_thread_name(ets->get_thread()),
821 fpop.frame_number() ));
823 ets->get_frame_pops()->set(fpop);
824 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state());
825 }
828 void
829 JvmtiEventControllerPrivate::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
830 EC_TRACE(("JVMTI [%s] # clear frame pop - frame=%d",
831 JvmtiTrace::safe_get_thread_name(ets->get_thread()),
832 fpop.frame_number() ));
834 ets->get_frame_pops()->clear(fpop);
835 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state());
836 }
839 void
840 JvmtiEventControllerPrivate::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
841 int cleared_cnt = ets->get_frame_pops()->clear_to(fpop);
843 EC_TRACE(("JVMTI [%s] # clear to frame pop - frame=%d, count=%d",
844 JvmtiTrace::safe_get_thread_name(ets->get_thread()),
845 fpop.frame_number(),
846 cleared_cnt ));
848 if (cleared_cnt > 0) {
849 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state());
850 }
851 }
853 void
854 JvmtiEventControllerPrivate::change_field_watch(jvmtiEvent event_type, bool added) {
855 int *count_addr;
857 switch (event_type) {
858 case JVMTI_EVENT_FIELD_MODIFICATION:
859 count_addr = (int *)JvmtiExport::get_field_modification_count_addr();
860 break;
861 case JVMTI_EVENT_FIELD_ACCESS:
862 count_addr = (int *)JvmtiExport::get_field_access_count_addr();
863 break;
864 default:
865 assert(false, "incorrect event");
866 return;
867 }
869 EC_TRACE(("JVMTI [-] # change field watch - %s %s count=%d",
870 event_type==JVMTI_EVENT_FIELD_MODIFICATION? "modification" : "access",
871 added? "add" : "remove",
872 *count_addr));
874 if (added) {
875 (*count_addr)++;
876 if (*count_addr == 1) {
877 recompute_enabled();
878 }
879 } else {
880 if (*count_addr > 0) {
881 (*count_addr)--;
882 if (*count_addr == 0) {
883 recompute_enabled();
884 }
885 } else {
886 assert(false, "field watch out of phase");
887 }
888 }
889 }
891 void
892 JvmtiEventControllerPrivate::event_init() {
893 assert(JvmtiThreadState_lock->is_locked(), "sanity check");
895 if (_initialized) {
896 return;
897 }
899 EC_TRACE(("JVMTI [-] # VM live"));
901 #ifdef ASSERT
902 // check that our idea and the spec's idea of threaded events match
903 for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) {
904 jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei);
905 assert(((THREAD_FILTERED_EVENT_BITS & bit) != 0) == JvmtiUtil::event_threaded(ei),
906 "thread filtered event list does not match");
907 }
908 #endif
910 _initialized = true;
911 }
913 void
914 JvmtiEventControllerPrivate::vm_start() {
915 // some events are now able to be enabled (phase has changed)
916 JvmtiEventControllerPrivate::recompute_enabled();
917 }
920 void
921 JvmtiEventControllerPrivate::vm_init() {
922 event_init();
924 // all the events are now able to be enabled (phase has changed)
925 JvmtiEventControllerPrivate::recompute_enabled();
926 }
929 void
930 JvmtiEventControllerPrivate::vm_death() {
931 // events are disabled (phase has changed)
932 JvmtiEventControllerPrivate::recompute_enabled();
933 }
936 ///////////////////////////////////////////////////////////////
937 //
938 // JvmtiEventController
939 //
941 JvmtiEventEnabled JvmtiEventController::_universal_global_event_enabled;
943 bool
944 JvmtiEventController::is_global_event(jvmtiEvent event_type) {
945 assert(is_valid_event_type(event_type), "invalid event type");
946 jlong bit_for = ((jlong)1) << (event_type - TOTAL_MIN_EVENT_TYPE_VAL);
947 return((bit_for & GLOBAL_EVENT_BITS)!=0);
948 }
950 void
951 JvmtiEventController::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, jvmtiEvent event_type, bool enabled) {
952 if (Threads::number_of_threads() == 0) {
953 // during early VM start-up locks don't exist, but we are safely single threaded,
954 // call the functionality without holding the JvmtiThreadState_lock.
955 JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled);
956 } else {
957 MutexLocker mu(JvmtiThreadState_lock);
958 JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled);
959 }
960 }
963 void
964 JvmtiEventController::set_event_callbacks(JvmtiEnvBase *env,
965 const jvmtiEventCallbacks* callbacks,
966 jint size_of_callbacks) {
967 if (Threads::number_of_threads() == 0) {
968 // during early VM start-up locks don't exist, but we are safely single threaded,
969 // call the functionality without holding the JvmtiThreadState_lock.
970 JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks);
971 } else {
972 MutexLocker mu(JvmtiThreadState_lock);
973 JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks);
974 }
975 }
977 void
978 JvmtiEventController::set_extension_event_callback(JvmtiEnvBase *env,
979 jint extension_event_index,
980 jvmtiExtensionEvent callback) {
981 if (Threads::number_of_threads() == 0) {
982 JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback);
983 } else {
984 MutexLocker mu(JvmtiThreadState_lock);
985 JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback);
986 }
987 }
992 void
993 JvmtiEventController::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
994 MutexLocker mu(JvmtiThreadState_lock);
995 JvmtiEventControllerPrivate::set_frame_pop(ets, fpop);
996 }
999 void
1000 JvmtiEventController::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
1001 MutexLocker mu(JvmtiThreadState_lock);
1002 JvmtiEventControllerPrivate::clear_frame_pop(ets, fpop);
1003 }
1006 void
1007 JvmtiEventController::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
1008 MutexLocker mu(JvmtiThreadState_lock);
1009 JvmtiEventControllerPrivate::clear_to_frame_pop(ets, fpop);
1010 }
1012 void
1013 JvmtiEventController::change_field_watch(jvmtiEvent event_type, bool added) {
1014 MutexLocker mu(JvmtiThreadState_lock);
1015 JvmtiEventControllerPrivate::change_field_watch(event_type, added);
1016 }
1018 void
1019 JvmtiEventController::thread_started(JavaThread *thread) {
1020 // operates only on the current thread
1021 // JvmtiThreadState_lock grabbed only if needed.
1022 JvmtiEventControllerPrivate::thread_started(thread);
1023 }
1025 void
1026 JvmtiEventController::thread_ended(JavaThread *thread) {
1027 // operates only on the current thread
1028 // JvmtiThreadState_lock grabbed only if needed.
1029 JvmtiEventControllerPrivate::thread_ended(thread);
1030 }
1032 void
1033 JvmtiEventController::env_initialize(JvmtiEnvBase *env) {
1034 if (Threads::number_of_threads() == 0) {
1035 // during early VM start-up locks don't exist, but we are safely single threaded,
1036 // call the functionality without holding the JvmtiThreadState_lock.
1037 JvmtiEventControllerPrivate::env_initialize(env);
1038 } else {
1039 MutexLocker mu(JvmtiThreadState_lock);
1040 JvmtiEventControllerPrivate::env_initialize(env);
1041 }
1042 }
1044 void
1045 JvmtiEventController::env_dispose(JvmtiEnvBase *env) {
1046 if (Threads::number_of_threads() == 0) {
1047 // during early VM start-up locks don't exist, but we are safely single threaded,
1048 // call the functionality without holding the JvmtiThreadState_lock.
1049 JvmtiEventControllerPrivate::env_dispose(env);
1050 } else {
1051 MutexLocker mu(JvmtiThreadState_lock);
1052 JvmtiEventControllerPrivate::env_dispose(env);
1053 }
1054 }
1057 void
1058 JvmtiEventController::vm_start() {
1059 if (JvmtiEnvBase::environments_might_exist()) {
1060 MutexLocker mu(JvmtiThreadState_lock);
1061 JvmtiEventControllerPrivate::vm_start();
1062 }
1063 }
1065 void
1066 JvmtiEventController::vm_init() {
1067 if (JvmtiEnvBase::environments_might_exist()) {
1068 MutexLocker mu(JvmtiThreadState_lock);
1069 JvmtiEventControllerPrivate::vm_init();
1070 }
1071 }
1073 void
1074 JvmtiEventController::vm_death() {
1075 if (JvmtiEnvBase::environments_might_exist()) {
1076 MutexLocker mu(JvmtiThreadState_lock);
1077 JvmtiEventControllerPrivate::vm_death();
1078 }
1079 }