Mercurial > hg > graal-jvmci-8
annotate src/share/vm/prims/jvmtiEventController.cpp @ 23660:b5f3a471e646
Merge.
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 01 Jun 2016 00:11:44 +0200 |
parents | 52b4284cb496 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2014, 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 |
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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 | |
1972 | 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" | |
0 | 40 |
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41 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
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42 |
0 | 43 #ifdef JVMTI_TRACE |
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44 #define EC_TRACE(out) do { \ |
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45 if (JvmtiTrace::trace_event_controller()) { \ |
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46 SafeResourceMark rm; \ |
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47 tty->print_cr out; \ |
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48 } \ |
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49 } while (0) |
0 | 50 #else |
51 #define EC_TRACE(out) | |
52 #endif /*JVMTI_TRACE */ | |
53 | |
54 // bits for standard events | |
55 | |
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)); | |
87 | |
88 // bits for extension events | |
89 static const jlong CLASS_UNLOAD_BIT = (((jlong)1) << (EXT_EVENT_CLASS_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL)); | |
90 | |
91 | |
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; | |
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105 static const jlong SHOULD_POST_ON_EXCEPTIONS_BITS = EXCEPTION_BITS | METHOD_EXIT_BIT | FRAME_POP_BIT; |
0 | 106 |
107 /////////////////////////////////////////////////////////////// | |
108 // | |
109 // JvmtiEventEnabled | |
110 // | |
111 | |
112 JvmtiEventEnabled::JvmtiEventEnabled() { | |
113 clear(); | |
114 } | |
115 | |
116 | |
117 void JvmtiEventEnabled::clear() { | |
118 _enabled_bits = 0; | |
119 #ifndef PRODUCT | |
120 _init_guard = JEE_INIT_GUARD; | |
121 #endif | |
122 } | |
123 | |
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 } | |
134 | |
135 | |
136 /////////////////////////////////////////////////////////////// | |
137 // | |
138 // JvmtiEnvThreadEventEnable | |
139 // | |
140 | |
141 JvmtiEnvThreadEventEnable::JvmtiEnvThreadEventEnable() { | |
142 _event_user_enabled.clear(); | |
143 _event_enabled.clear(); | |
144 } | |
145 | |
146 | |
147 JvmtiEnvThreadEventEnable::~JvmtiEnvThreadEventEnable() { | |
148 _event_user_enabled.clear(); | |
149 _event_enabled.clear(); | |
150 } | |
151 | |
152 | |
153 /////////////////////////////////////////////////////////////// | |
154 // | |
155 // JvmtiThreadEventEnable | |
156 // | |
157 | |
158 JvmtiThreadEventEnable::JvmtiThreadEventEnable() { | |
159 _event_enabled.clear(); | |
160 } | |
161 | |
162 | |
163 JvmtiThreadEventEnable::~JvmtiThreadEventEnable() { | |
164 _event_enabled.clear(); | |
165 } | |
166 | |
167 | |
168 /////////////////////////////////////////////////////////////// | |
169 // | |
170 // JvmtiEnvEventEnable | |
171 // | |
172 | |
173 JvmtiEnvEventEnable::JvmtiEnvEventEnable() { | |
174 _event_user_enabled.clear(); | |
175 _event_callback_enabled.clear(); | |
176 _event_enabled.clear(); | |
177 } | |
178 | |
179 | |
180 JvmtiEnvEventEnable::~JvmtiEnvEventEnable() { | |
181 _event_user_enabled.clear(); | |
182 _event_callback_enabled.clear(); | |
183 _event_enabled.clear(); | |
184 } | |
185 | |
186 | |
187 /////////////////////////////////////////////////////////////// | |
188 // | |
189 // VM_EnterInterpOnlyMode | |
190 // | |
191 | |
192 class VM_EnterInterpOnlyMode : public VM_Operation { | |
193 private: | |
194 JvmtiThreadState *_state; | |
195 | |
196 public: | |
197 VM_EnterInterpOnlyMode(JvmtiThreadState *state); | |
198 | |
199 bool allow_nested_vm_operations() const { return true; } | |
200 VMOp_Type type() const { return VMOp_EnterInterpOnlyMode; } | |
201 void doit(); | |
202 | |
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 }; | |
208 | |
209 VM_EnterInterpOnlyMode::VM_EnterInterpOnlyMode(JvmtiThreadState *state) | |
210 : _state(state) | |
211 { | |
212 } | |
213 | |
214 | |
215 void VM_EnterInterpOnlyMode::doit() { | |
216 // Set up the current stack depth for later tracking | |
217 _state->invalidate_cur_stack_depth(); | |
218 | |
219 _state->enter_interp_only_mode(); | |
220 | |
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 } | |
244 | |
245 | |
246 /////////////////////////////////////////////////////////////// | |
247 // | |
248 // VM_ChangeSingleStep | |
249 // | |
250 | |
251 class VM_ChangeSingleStep : public VM_Operation { | |
252 private: | |
253 bool _on; | |
254 | |
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 }; | |
261 | |
262 | |
263 VM_ChangeSingleStep::VM_ChangeSingleStep(bool on) | |
264 : _on(on != 0) | |
265 { | |
266 } | |
267 | |
268 | |
269 | |
270 | |
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 // | |
281 | |
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(); | |
293 | |
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); | |
299 | |
300 static void set_extension_event_callback(JvmtiEnvBase *env, | |
301 jint extension_event_index, | |
302 jvmtiExtensionEvent callback); | |
303 | |
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); | |
308 | |
309 static void thread_started(JavaThread *thread); | |
310 static void thread_ended(JavaThread *thread); | |
311 | |
312 static void env_initialize(JvmtiEnvBase *env); | |
313 static void env_dispose(JvmtiEnvBase *env); | |
314 | |
315 static void vm_start(); | |
316 static void vm_init(); | |
317 static void vm_death(); | |
318 | |
319 static void trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed); | |
320 static void trace_changed(jlong now_enabled, jlong changed); | |
321 }; | |
322 | |
323 bool JvmtiEventControllerPrivate::_initialized = false; | |
324 | |
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 } | |
329 | |
330 | |
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 } | |
345 | |
346 | |
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()))); | |
350 | |
351 VM_EnterInterpOnlyMode op(state); | |
352 VMThread::execute(&op); | |
353 } | |
354 | |
355 | |
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 } | |
362 | |
363 | |
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 } | |
382 | |
383 | |
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 } | |
401 | |
402 | |
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(); | |
413 | |
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 } | |
435 | |
436 // will we really send these events to this env | |
437 env->env_event_enable()->_event_enabled.set_bits(now_enabled); | |
438 | |
439 trace_changed(now_enabled, (now_enabled ^ was_enabled) & ~THREAD_FILTERED_EVENT_BITS); | |
440 | |
441 return now_enabled; | |
442 } | |
443 | |
444 | |
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(); | |
450 | |
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()); | |
456 | |
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 } | |
468 | |
469 switch (JvmtiEnv::get_phase()) { | |
470 case JVMTI_PHASE_DEAD: | |
471 // no events allowed when dead | |
472 now_enabled = 0; | |
473 break; | |
474 } | |
475 | |
476 // if anything changed do update | |
477 if (now_enabled != was_enabled) { | |
478 | |
479 // will we really send these events to this thread x env | |
480 ets->event_enable()->_event_enabled.set_bits(now_enabled); | |
481 | |
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 } | |
495 | |
496 | |
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) { | |
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501 if (state == NULL) { |
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502 // associated JavaThread is exiting |
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503 return (jlong)0; |
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504 } |
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505 |
0 | 506 jlong was_any_env_enabled = state->thread_event_enable()->_event_enabled.get_bits(); |
507 jlong any_env_enabled = 0; | |
508 | |
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 } | |
518 | |
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); | |
522 | |
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(); | |
526 | |
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 } | |
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534 |
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535 // update the JavaThread cached value for thread-specific should_post_on_exceptions value |
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536 bool should_post_on_exceptions = (any_env_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0; |
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537 state->set_should_post_on_exceptions(should_post_on_exceptions); |
0 | 538 } |
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539 |
0 | 540 return any_env_enabled; |
541 } | |
542 | |
543 | |
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"); | |
562 | |
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; | |
566 | |
567 EC_TRACE(("JVMTI [-] # recompute enabled - before %llx", was_any_env_thread_enabled)); | |
568 | |
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 } | |
576 | |
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()) { | |
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586 // state_for_while_locked() makes tp->is_exiting() check |
0 | 587 JvmtiThreadState::state_for_while_locked(tp); // create the thread state if missing |
588 } | |
589 }// release Threads_lock | |
590 } | |
591 | |
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 } | |
596 | |
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); | |
620 | |
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); | |
623 | |
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 } | |
640 | |
641 // set global truly enabled, that is, any thread in any environment | |
642 JvmtiEventController::_universal_global_event_enabled.set_bits(any_env_thread_enabled); | |
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643 |
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644 // set global should_post_on_exceptions |
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645 JvmtiExport::set_should_post_on_exceptions((any_env_thread_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0); |
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646 |
0 | 647 } |
648 | |
649 EC_TRACE(("JVMTI [-] # recompute enabled - after %llx", any_env_thread_enabled)); | |
650 } | |
651 | |
652 | |
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"); | |
658 | |
659 EC_TRACE(("JVMTI [%s] # thread started", JvmtiTrace::safe_get_thread_name(thread))); | |
660 | |
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 } | |
671 | |
672 | |
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. | |
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677 assert(JvmtiThreadState_lock->is_locked(), "sanity check"); |
0 | 678 |
679 EC_TRACE(("JVMTI [%s] # thread ended", JvmtiTrace::safe_get_thread_name(thread))); | |
680 | |
681 JvmtiThreadState *state = thread->jvmti_thread_state(); | |
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682 assert(state != NULL, "else why are we here?"); |
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683 delete state; |
0 | 684 } |
685 | |
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")); | |
691 | |
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 } | |
703 | |
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")); | |
711 | |
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"); | |
715 | |
716 | |
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; | |
721 | |
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); | |
728 | |
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 } | |
738 | |
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); | |
748 | |
749 recompute_enabled(); | |
750 } | |
751 | |
752 | |
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")); | |
757 | |
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 } | |
763 | |
764 env->initialize(); | |
765 | |
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 } | |
773 | |
774 | |
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")); | |
779 | |
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 } | |
789 | |
790 // Let the environment finish disposing itself. | |
791 env->env_dispose(); | |
792 } | |
793 | |
794 | |
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"); | |
799 | |
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))); | |
803 | |
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 } | |
815 | |
816 | |
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() )); | |
822 | |
823 ets->get_frame_pops()->set(fpop); | |
824 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
825 } | |
826 | |
827 | |
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() )); | |
833 | |
834 ets->get_frame_pops()->clear(fpop); | |
835 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
836 } | |
837 | |
838 | |
839 void | |
840 JvmtiEventControllerPrivate::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
841 int cleared_cnt = ets->get_frame_pops()->clear_to(fpop); | |
842 | |
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 )); | |
847 | |
848 if (cleared_cnt > 0) { | |
849 recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); | |
850 } | |
851 } | |
852 | |
853 void | |
854 JvmtiEventControllerPrivate::change_field_watch(jvmtiEvent event_type, bool added) { | |
855 int *count_addr; | |
856 | |
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 } | |
868 | |
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)); | |
873 | |
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 } | |
890 | |
891 void | |
892 JvmtiEventControllerPrivate::event_init() { | |
893 assert(JvmtiThreadState_lock->is_locked(), "sanity check"); | |
894 | |
895 if (_initialized) { | |
896 return; | |
897 } | |
898 | |
899 EC_TRACE(("JVMTI [-] # VM live")); | |
900 | |
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 | |
909 | |
910 _initialized = true; | |
911 } | |
912 | |
913 void | |
914 JvmtiEventControllerPrivate::vm_start() { | |
915 // some events are now able to be enabled (phase has changed) | |
916 JvmtiEventControllerPrivate::recompute_enabled(); | |
917 } | |
918 | |
919 | |
920 void | |
921 JvmtiEventControllerPrivate::vm_init() { | |
922 event_init(); | |
923 | |
924 // all the events are now able to be enabled (phase has changed) | |
925 JvmtiEventControllerPrivate::recompute_enabled(); | |
926 } | |
927 | |
928 | |
929 void | |
930 JvmtiEventControllerPrivate::vm_death() { | |
931 // events are disabled (phase has changed) | |
932 JvmtiEventControllerPrivate::recompute_enabled(); | |
933 } | |
934 | |
935 | |
936 /////////////////////////////////////////////////////////////// | |
937 // | |
938 // JvmtiEventController | |
939 // | |
940 | |
941 JvmtiEventEnabled JvmtiEventController::_universal_global_event_enabled; | |
942 | |
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 } | |
949 | |
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 } | |
961 | |
962 | |
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 } | |
976 | |
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 } | |
988 | |
989 | |
990 | |
991 | |
992 void | |
993 JvmtiEventController::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
994 MutexLocker mu(JvmtiThreadState_lock); | |
995 JvmtiEventControllerPrivate::set_frame_pop(ets, fpop); | |
996 } | |
997 | |
998 | |
999 void | |
1000 JvmtiEventController::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { | |
1001 MutexLocker mu(JvmtiThreadState_lock); | |
1002 JvmtiEventControllerPrivate::clear_frame_pop(ets, fpop); | |
1003 } | |
1004 | |
1005 | |
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 } | |
1011 | |
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 } | |
1017 | |
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 } | |
1024 | |
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 } | |
1031 | |
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 } | |
1043 | |
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 } | |
1055 | |
1056 | |
1057 void | |
1058 JvmtiEventController::vm_start() { | |
1059 if (JvmtiEnvBase::environments_might_exist()) { | |
1060 MutexLocker mu(JvmtiThreadState_lock); | |
1061 JvmtiEventControllerPrivate::vm_start(); | |
1062 } | |
1063 } | |
1064 | |
1065 void | |
1066 JvmtiEventController::vm_init() { | |
1067 if (JvmtiEnvBase::environments_might_exist()) { | |
1068 MutexLocker mu(JvmtiThreadState_lock); | |
1069 JvmtiEventControllerPrivate::vm_init(); | |
1070 } | |
1071 } | |
1072 | |
1073 void | |
1074 JvmtiEventController::vm_death() { | |
1075 if (JvmtiEnvBase::environments_might_exist()) { | |
1076 MutexLocker mu(JvmtiThreadState_lock); | |
1077 JvmtiEventControllerPrivate::vm_death(); | |
1078 } | |
1079 } |