--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/prims/jvmtiEventController.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,1079 @@
+/*
+ * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "interpreter/interpreter.hpp"
+#include "jvmtifiles/jvmtiEnv.hpp"
+#include "logging/log.hpp"
+#include "memory/resourceArea.hpp"
+#include "prims/jvmtiEventController.hpp"
+#include "prims/jvmtiEventController.inline.hpp"
+#include "prims/jvmtiExport.hpp"
+#include "prims/jvmtiImpl.hpp"
+#include "prims/jvmtiThreadState.inline.hpp"
+#include "runtime/frame.hpp"
+#include "runtime/thread.hpp"
+#include "runtime/vframe.hpp"
+#include "runtime/vframe_hp.hpp"
+#include "runtime/vmThread.hpp"
+#include "runtime/vm_operations.hpp"
+
+#ifdef JVMTI_TRACE
+#define EC_TRACE(out) do { \
+ if (JvmtiTrace::trace_event_controller()) { \
+ SafeResourceMark rm; \
+ log_trace(jvmti) out; \
+ } \
+} while (0)
+#else
+#define EC_TRACE(out)
+#endif /*JVMTI_TRACE */
+
+// bits for standard events
+
+static const jlong SINGLE_STEP_BIT = (((jlong)1) << (JVMTI_EVENT_SINGLE_STEP - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong FRAME_POP_BIT = (((jlong)1) << (JVMTI_EVENT_FRAME_POP - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong BREAKPOINT_BIT = (((jlong)1) << (JVMTI_EVENT_BREAKPOINT - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong FIELD_ACCESS_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_ACCESS - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong FIELD_MODIFICATION_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_MODIFICATION - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong METHOD_ENTRY_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_ENTRY - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong METHOD_EXIT_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_EXIT - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong CLASS_FILE_LOAD_HOOK_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_FILE_LOAD_HOOK - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong NATIVE_METHOD_BIND_BIT = (((jlong)1) << (JVMTI_EVENT_NATIVE_METHOD_BIND - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong VM_START_BIT = (((jlong)1) << (JVMTI_EVENT_VM_START - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong VM_INIT_BIT = (((jlong)1) << (JVMTI_EVENT_VM_INIT - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong VM_DEATH_BIT = (((jlong)1) << (JVMTI_EVENT_VM_DEATH - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong CLASS_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_LOAD - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong CLASS_PREPARE_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_PREPARE - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong THREAD_START_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_START - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong THREAD_END_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_END - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong EXCEPTION_THROW_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong EXCEPTION_CATCH_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION_CATCH - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong MONITOR_CONTENDED_ENTER_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTER - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong MONITOR_CONTENDED_ENTERED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTERED - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong MONITOR_WAIT_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAIT - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong MONITOR_WAITED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAITED - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong DYNAMIC_CODE_GENERATED_BIT = (((jlong)1) << (JVMTI_EVENT_DYNAMIC_CODE_GENERATED - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong DATA_DUMP_BIT = (((jlong)1) << (JVMTI_EVENT_DATA_DUMP_REQUEST - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong COMPILED_METHOD_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_LOAD - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong COMPILED_METHOD_UNLOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong GARBAGE_COLLECTION_START_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_START - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong GARBAGE_COLLECTION_FINISH_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_FINISH - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong OBJECT_FREE_BIT = (((jlong)1) << (JVMTI_EVENT_OBJECT_FREE - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong RESOURCE_EXHAUSTED_BIT = (((jlong)1) << (JVMTI_EVENT_RESOURCE_EXHAUSTED - TOTAL_MIN_EVENT_TYPE_VAL));
+static const jlong VM_OBJECT_ALLOC_BIT = (((jlong)1) << (JVMTI_EVENT_VM_OBJECT_ALLOC - TOTAL_MIN_EVENT_TYPE_VAL));
+
+// bits for extension events
+static const jlong CLASS_UNLOAD_BIT = (((jlong)1) << (EXT_EVENT_CLASS_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL));
+
+
+static const jlong MONITOR_BITS = MONITOR_CONTENDED_ENTER_BIT | MONITOR_CONTENDED_ENTERED_BIT |
+ MONITOR_WAIT_BIT | MONITOR_WAITED_BIT;
+static const jlong EXCEPTION_BITS = EXCEPTION_THROW_BIT | EXCEPTION_CATCH_BIT;
+static const jlong INTERP_EVENT_BITS = SINGLE_STEP_BIT | METHOD_ENTRY_BIT | METHOD_EXIT_BIT |
+ FRAME_POP_BIT | FIELD_ACCESS_BIT | FIELD_MODIFICATION_BIT;
+static const jlong THREAD_FILTERED_EVENT_BITS = INTERP_EVENT_BITS | EXCEPTION_BITS | MONITOR_BITS |
+ BREAKPOINT_BIT | CLASS_LOAD_BIT | CLASS_PREPARE_BIT | THREAD_END_BIT;
+static const jlong NEED_THREAD_LIFE_EVENTS = THREAD_FILTERED_EVENT_BITS | THREAD_START_BIT;
+static const jlong EARLY_EVENT_BITS = CLASS_FILE_LOAD_HOOK_BIT | CLASS_LOAD_BIT | CLASS_PREPARE_BIT |
+ VM_START_BIT | VM_INIT_BIT | VM_DEATH_BIT | NATIVE_METHOD_BIND_BIT |
+ THREAD_START_BIT | THREAD_END_BIT |
+ COMPILED_METHOD_LOAD_BIT | COMPILED_METHOD_UNLOAD_BIT |
+ DYNAMIC_CODE_GENERATED_BIT;
+static const jlong GLOBAL_EVENT_BITS = ~THREAD_FILTERED_EVENT_BITS;
+static const jlong SHOULD_POST_ON_EXCEPTIONS_BITS = EXCEPTION_BITS | METHOD_EXIT_BIT | FRAME_POP_BIT;
+
+///////////////////////////////////////////////////////////////
+//
+// JvmtiEventEnabled
+//
+
+JvmtiEventEnabled::JvmtiEventEnabled() {
+ clear();
+}
+
+
+void JvmtiEventEnabled::clear() {
+ _enabled_bits = 0;
+#ifndef PRODUCT
+ _init_guard = JEE_INIT_GUARD;
+#endif
+}
+
+void JvmtiEventEnabled::set_enabled(jvmtiEvent event_type, bool enabled) {
+ jlong bits = get_bits();
+ jlong mask = bit_for(event_type);
+ if (enabled) {
+ bits |= mask;
+ } else {
+ bits &= ~mask;
+ }
+ set_bits(bits);
+}
+
+
+///////////////////////////////////////////////////////////////
+//
+// JvmtiEnvThreadEventEnable
+//
+
+JvmtiEnvThreadEventEnable::JvmtiEnvThreadEventEnable() {
+ _event_user_enabled.clear();
+ _event_enabled.clear();
+}
+
+
+JvmtiEnvThreadEventEnable::~JvmtiEnvThreadEventEnable() {
+ _event_user_enabled.clear();
+ _event_enabled.clear();
+}
+
+
+///////////////////////////////////////////////////////////////
+//
+// JvmtiThreadEventEnable
+//
+
+JvmtiThreadEventEnable::JvmtiThreadEventEnable() {
+ _event_enabled.clear();
+}
+
+
+JvmtiThreadEventEnable::~JvmtiThreadEventEnable() {
+ _event_enabled.clear();
+}
+
+
+///////////////////////////////////////////////////////////////
+//
+// JvmtiEnvEventEnable
+//
+
+JvmtiEnvEventEnable::JvmtiEnvEventEnable() {
+ _event_user_enabled.clear();
+ _event_callback_enabled.clear();
+ _event_enabled.clear();
+}
+
+
+JvmtiEnvEventEnable::~JvmtiEnvEventEnable() {
+ _event_user_enabled.clear();
+ _event_callback_enabled.clear();
+ _event_enabled.clear();
+}
+
+
+///////////////////////////////////////////////////////////////
+//
+// VM_EnterInterpOnlyMode
+//
+
+class VM_EnterInterpOnlyMode : public VM_Operation {
+private:
+ JvmtiThreadState *_state;
+
+public:
+ VM_EnterInterpOnlyMode(JvmtiThreadState *state);
+
+ bool allow_nested_vm_operations() const { return true; }
+ VMOp_Type type() const { return VMOp_EnterInterpOnlyMode; }
+ void doit();
+
+ // to do: this same function is in jvmtiImpl - should be in one place
+ bool can_be_deoptimized(vframe* vf) {
+ return (vf->is_compiled_frame() && vf->fr().can_be_deoptimized());
+ }
+};
+
+VM_EnterInterpOnlyMode::VM_EnterInterpOnlyMode(JvmtiThreadState *state)
+ : _state(state)
+{
+}
+
+
+void VM_EnterInterpOnlyMode::doit() {
+ // Set up the current stack depth for later tracking
+ _state->invalidate_cur_stack_depth();
+
+ _state->enter_interp_only_mode();
+
+ JavaThread *thread = _state->get_thread();
+ if (thread->has_last_Java_frame()) {
+ // If running in fullspeed mode, single stepping is implemented
+ // as follows: first, the interpreter does not dispatch to
+ // compiled code for threads that have single stepping enabled;
+ // second, we deoptimize all methods on the thread's stack when
+ // interpreted-only mode is enabled the first time for a given
+ // thread (nothing to do if no Java frames yet).
+ int num_marked = 0;
+ ResourceMark resMark;
+ RegisterMap rm(thread, false);
+ for (vframe* vf = thread->last_java_vframe(&rm); vf; vf = vf->sender()) {
+ if (can_be_deoptimized(vf)) {
+ ((compiledVFrame*) vf)->code()->mark_for_deoptimization();
+ ++num_marked;
+ }
+ }
+ if (num_marked > 0) {
+ VM_Deoptimize op;
+ VMThread::execute(&op);
+ }
+ }
+}
+
+
+///////////////////////////////////////////////////////////////
+//
+// VM_ChangeSingleStep
+//
+
+class VM_ChangeSingleStep : public VM_Operation {
+private:
+ bool _on;
+
+public:
+ VM_ChangeSingleStep(bool on);
+ VMOp_Type type() const { return VMOp_ChangeSingleStep; }
+ bool allow_nested_vm_operations() const { return true; }
+ void doit(); // method definition is after definition of JvmtiEventControllerPrivate because of scoping
+};
+
+
+VM_ChangeSingleStep::VM_ChangeSingleStep(bool on)
+ : _on(on != 0)
+{
+}
+
+
+
+
+///////////////////////////////////////////////////////////////
+//
+// JvmtiEventControllerPrivate
+//
+// Private internal implementation methods for JvmtiEventController.
+//
+// These methods are thread safe either because they are called
+// in early VM initialization which is single threaded, or they
+// hold the JvmtiThreadState_lock.
+//
+
+class JvmtiEventControllerPrivate : public AllStatic {
+ static bool _initialized;
+public:
+ static void set_should_post_single_step(bool on);
+ static void enter_interp_only_mode(JvmtiThreadState *state);
+ static void leave_interp_only_mode(JvmtiThreadState *state);
+ static void recompute_enabled();
+ static jlong recompute_env_enabled(JvmtiEnvBase* env);
+ static jlong recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state);
+ static jlong recompute_thread_enabled(JvmtiThreadState *state);
+ static void event_init();
+
+ static void set_user_enabled(JvmtiEnvBase *env, JavaThread *thread,
+ jvmtiEvent event_type, bool enabled);
+ static void set_event_callbacks(JvmtiEnvBase *env,
+ const jvmtiEventCallbacks* callbacks,
+ jint size_of_callbacks);
+
+ static void set_extension_event_callback(JvmtiEnvBase *env,
+ jint extension_event_index,
+ jvmtiExtensionEvent callback);
+
+ static void set_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop);
+ static void clear_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop);
+ static void clear_to_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop);
+ static void change_field_watch(jvmtiEvent event_type, bool added);
+
+ static void thread_started(JavaThread *thread);
+ static void thread_ended(JavaThread *thread);
+
+ static void env_initialize(JvmtiEnvBase *env);
+ static void env_dispose(JvmtiEnvBase *env);
+
+ static void vm_start();
+ static void vm_init();
+ static void vm_death();
+
+ static void trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed);
+ static void trace_changed(jlong now_enabled, jlong changed);
+};
+
+bool JvmtiEventControllerPrivate::_initialized = false;
+
+void JvmtiEventControllerPrivate::set_should_post_single_step(bool on) {
+ // we have permission to do this, VM op doesn't
+ JvmtiExport::set_should_post_single_step(on);
+}
+
+
+// This change must always be occur when at a safepoint.
+// Being at a safepoint causes the interpreter to use the
+// safepoint dispatch table which we overload to find single
+// step points. Just to be sure that it has been set, we
+// call notice_safepoints when turning on single stepping.
+// When we leave our current safepoint, should_post_single_step
+// will be checked by the interpreter, and the table kept
+// or changed accordingly.
+void VM_ChangeSingleStep::doit() {
+ JvmtiEventControllerPrivate::set_should_post_single_step(_on);
+ if (_on) {
+ Interpreter::notice_safepoints();
+ }
+}
+
+
+void JvmtiEventControllerPrivate::enter_interp_only_mode(JvmtiThreadState *state) {
+ EC_TRACE(("[%s] # Entering interpreter only mode",
+ JvmtiTrace::safe_get_thread_name(state->get_thread())));
+
+ VM_EnterInterpOnlyMode op(state);
+ VMThread::execute(&op);
+}
+
+
+void
+JvmtiEventControllerPrivate::leave_interp_only_mode(JvmtiThreadState *state) {
+ EC_TRACE(("[%s] # Leaving interpreter only mode",
+ JvmtiTrace::safe_get_thread_name(state->get_thread())));
+ state->leave_interp_only_mode();
+}
+
+
+void
+JvmtiEventControllerPrivate::trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed) {
+#ifdef JVMTI_TRACE
+ if (JvmtiTrace::trace_event_controller()) {
+ SafeResourceMark rm;
+ // traces standard events only
+ for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) {
+ jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei);
+ if (changed & bit) {
+ // it changed, print it
+ log_trace(jvmti)("[%s] # %s event %s",
+ JvmtiTrace::safe_get_thread_name(state->get_thread()),
+ (now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei));
+ }
+ }
+ }
+#endif /*JVMTI_TRACE */
+}
+
+
+void
+JvmtiEventControllerPrivate::trace_changed(jlong now_enabled, jlong changed) {
+#ifdef JVMTI_TRACE
+ if (JvmtiTrace::trace_event_controller()) {
+ SafeResourceMark rm;
+ // traces standard events only
+ for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) {
+ jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei);
+ if (changed & bit) {
+ // it changed, print it
+ log_trace(jvmti)("[-] # %s event %s",
+ (now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei));
+ }
+ }
+ }
+#endif /*JVMTI_TRACE */
+}
+
+
+// For the specified env: compute the currently truly enabled events
+// set external state accordingly.
+// Return value and set value must include all events.
+// But outside this class, only non-thread-filtered events can be queried..
+jlong
+JvmtiEventControllerPrivate::recompute_env_enabled(JvmtiEnvBase* env) {
+ jlong was_enabled = env->env_event_enable()->_event_enabled.get_bits();
+ jlong now_enabled =
+ env->env_event_enable()->_event_callback_enabled.get_bits() &
+ env->env_event_enable()->_event_user_enabled.get_bits();
+
+ switch (env->phase()) {
+ case JVMTI_PHASE_PRIMORDIAL:
+ case JVMTI_PHASE_ONLOAD:
+ // only these events allowed in primordial or onload phase
+ now_enabled &= (EARLY_EVENT_BITS & ~THREAD_FILTERED_EVENT_BITS);
+ break;
+ case JVMTI_PHASE_START:
+ // only these events allowed in start phase
+ now_enabled &= EARLY_EVENT_BITS;
+ break;
+ case JVMTI_PHASE_LIVE:
+ // all events allowed during live phase
+ break;
+ case JVMTI_PHASE_DEAD:
+ // no events allowed when dead
+ now_enabled = 0;
+ break;
+ default:
+ assert(false, "no other phases - sanity check");
+ break;
+ }
+
+ // will we really send these events to this env
+ env->env_event_enable()->_event_enabled.set_bits(now_enabled);
+
+ trace_changed(now_enabled, (now_enabled ^ was_enabled) & ~THREAD_FILTERED_EVENT_BITS);
+
+ return now_enabled;
+}
+
+
+// For the specified env and thread: compute the currently truly enabled events
+// set external state accordingly. Only thread-filtered events are included.
+jlong
+JvmtiEventControllerPrivate::recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state) {
+ JvmtiEnv *env = ets->get_env();
+
+ jlong was_enabled = ets->event_enable()->_event_enabled.get_bits();
+ jlong now_enabled = THREAD_FILTERED_EVENT_BITS &
+ env->env_event_enable()->_event_callback_enabled.get_bits() &
+ (env->env_event_enable()->_event_user_enabled.get_bits() |
+ ets->event_enable()->_event_user_enabled.get_bits());
+
+ // for frame pops and field watchs, computed enabled state
+ // is only true if an event has been requested
+ if (!ets->has_frame_pops()) {
+ now_enabled &= ~FRAME_POP_BIT;
+ }
+ if (*((int *)JvmtiExport::get_field_access_count_addr()) == 0) {
+ now_enabled &= ~FIELD_ACCESS_BIT;
+ }
+ if (*((int *)JvmtiExport::get_field_modification_count_addr()) == 0) {
+ now_enabled &= ~FIELD_MODIFICATION_BIT;
+ }
+
+ switch (JvmtiEnv::get_phase()) {
+ case JVMTI_PHASE_DEAD:
+ // no events allowed when dead
+ now_enabled = 0;
+ break;
+ default:
+ break;
+ }
+
+ // if anything changed do update
+ if (now_enabled != was_enabled) {
+
+ // will we really send these events to this thread x env
+ ets->event_enable()->_event_enabled.set_bits(now_enabled);
+
+ // If the enabled status of the single step or breakpoint events changed,
+ // the location status may need to change as well.
+ jlong changed = now_enabled ^ was_enabled;
+ if (changed & SINGLE_STEP_BIT) {
+ ets->reset_current_location(JVMTI_EVENT_SINGLE_STEP, (now_enabled & SINGLE_STEP_BIT) != 0);
+ }
+ if (changed & BREAKPOINT_BIT) {
+ ets->reset_current_location(JVMTI_EVENT_BREAKPOINT, (now_enabled & BREAKPOINT_BIT) != 0);
+ }
+ trace_changed(state, now_enabled, changed);
+ }
+ return now_enabled;
+}
+
+
+// For the specified thread: compute the currently truly enabled events
+// set external state accordingly. Only thread-filtered events are included.
+jlong
+JvmtiEventControllerPrivate::recompute_thread_enabled(JvmtiThreadState *state) {
+ if (state == NULL) {
+ // associated JavaThread is exiting
+ return (jlong)0;
+ }
+
+ julong was_any_env_enabled = state->thread_event_enable()->_event_enabled.get_bits();
+ julong any_env_enabled = 0;
+
+ {
+ // This iteration will include JvmtiEnvThreadStates whoses environments
+ // have been disposed. These JvmtiEnvThreadStates must not be filtered
+ // as recompute must be called on them to disable their events,
+ JvmtiEnvThreadStateIterator it(state);
+ for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) {
+ any_env_enabled |= recompute_env_thread_enabled(ets, state);
+ }
+ }
+
+ if (any_env_enabled != was_any_env_enabled) {
+ // mark if event is truly enabled on this thread in any environment
+ state->thread_event_enable()->_event_enabled.set_bits(any_env_enabled);
+
+ // compute interp_only mode
+ bool should_be_interp = (any_env_enabled & INTERP_EVENT_BITS) != 0;
+ bool is_now_interp = state->is_interp_only_mode();
+
+ if (should_be_interp != is_now_interp) {
+ if (should_be_interp) {
+ enter_interp_only_mode(state);
+ } else {
+ leave_interp_only_mode(state);
+ }
+ }
+
+ // update the JavaThread cached value for thread-specific should_post_on_exceptions value
+ bool should_post_on_exceptions = (any_env_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0;
+ state->set_should_post_on_exceptions(should_post_on_exceptions);
+ }
+
+ return any_env_enabled;
+}
+
+
+// Compute truly enabled events - meaning if the event can and could be
+// sent. An event is truly enabled if it is user enabled on the thread
+// or globally user enabled, but only if there is a callback or event hook
+// for it and, for field watch and frame pop, one has been set.
+// Compute if truly enabled, per thread, per environment, per combination
+// (thread x environment), and overall. These merges are true if any is true.
+// True per thread if some environment has callback set and the event is globally
+// enabled or enabled for this thread.
+// True per environment if the callback is set and the event is globally
+// enabled in this environment or enabled for any thread in this environment.
+// True per combination if the environment has the callback set and the
+// event is globally enabled in this environment or the event is enabled
+// for this thread and environment.
+//
+// All states transitions dependent on these transitions are also handled here.
+void
+JvmtiEventControllerPrivate::recompute_enabled() {
+ assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
+
+ // event enabled for any thread in any environment
+ julong was_any_env_thread_enabled = JvmtiEventController::_universal_global_event_enabled.get_bits();
+ julong any_env_thread_enabled = 0;
+
+ EC_TRACE(("[-] # recompute enabled - before " JULONG_FORMAT_X, was_any_env_thread_enabled));
+
+ // compute non-thread-filters events.
+ // This must be done separately from thread-filtered events, since some
+ // events can occur before any threads exist.
+ JvmtiEnvIterator it;
+ for (JvmtiEnvBase* env = it.first(); env != NULL; env = it.next(env)) {
+ any_env_thread_enabled |= recompute_env_enabled(env);
+ }
+
+ // We need to create any missing jvmti_thread_state if there are globally set thread
+ // filtered events and there weren't last time
+ if ( (any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) != 0 &&
+ (was_any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) == 0) {
+ {
+ MutexLocker mu(Threads_lock); //hold the Threads_lock for the iteration
+ for (JavaThread *tp = Threads::first(); tp != NULL; tp = tp->next()) {
+ // state_for_while_locked() makes tp->is_exiting() check
+ JvmtiThreadState::state_for_while_locked(tp); // create the thread state if missing
+ }
+ }// release Threads_lock
+ }
+
+ // compute and set thread-filtered events
+ for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) {
+ any_env_thread_enabled |= recompute_thread_enabled(state);
+ }
+
+ // set universal state (across all envs and threads)
+ jlong delta = any_env_thread_enabled ^ was_any_env_thread_enabled;
+ if (delta != 0) {
+ JvmtiExport::set_should_post_field_access((any_env_thread_enabled & FIELD_ACCESS_BIT) != 0);
+ JvmtiExport::set_should_post_field_modification((any_env_thread_enabled & FIELD_MODIFICATION_BIT) != 0);
+ JvmtiExport::set_should_post_class_load((any_env_thread_enabled & CLASS_LOAD_BIT) != 0);
+ JvmtiExport::set_should_post_class_file_load_hook((any_env_thread_enabled & CLASS_FILE_LOAD_HOOK_BIT) != 0);
+ JvmtiExport::set_should_post_native_method_bind((any_env_thread_enabled & NATIVE_METHOD_BIND_BIT) != 0);
+ JvmtiExport::set_should_post_dynamic_code_generated((any_env_thread_enabled & DYNAMIC_CODE_GENERATED_BIT) != 0);
+ JvmtiExport::set_should_post_data_dump((any_env_thread_enabled & DATA_DUMP_BIT) != 0);
+ JvmtiExport::set_should_post_class_prepare((any_env_thread_enabled & CLASS_PREPARE_BIT) != 0);
+ JvmtiExport::set_should_post_class_unload((any_env_thread_enabled & CLASS_UNLOAD_BIT) != 0);
+ JvmtiExport::set_should_post_monitor_contended_enter((any_env_thread_enabled & MONITOR_CONTENDED_ENTER_BIT) != 0);
+ JvmtiExport::set_should_post_monitor_contended_entered((any_env_thread_enabled & MONITOR_CONTENDED_ENTERED_BIT) != 0);
+ JvmtiExport::set_should_post_monitor_wait((any_env_thread_enabled & MONITOR_WAIT_BIT) != 0);
+ JvmtiExport::set_should_post_monitor_waited((any_env_thread_enabled & MONITOR_WAITED_BIT) != 0);
+ JvmtiExport::set_should_post_garbage_collection_start((any_env_thread_enabled & GARBAGE_COLLECTION_START_BIT) != 0);
+ JvmtiExport::set_should_post_garbage_collection_finish((any_env_thread_enabled & GARBAGE_COLLECTION_FINISH_BIT) != 0);
+ JvmtiExport::set_should_post_object_free((any_env_thread_enabled & OBJECT_FREE_BIT) != 0);
+ JvmtiExport::set_should_post_resource_exhausted((any_env_thread_enabled & RESOURCE_EXHAUSTED_BIT) != 0);
+ JvmtiExport::set_should_post_compiled_method_load((any_env_thread_enabled & COMPILED_METHOD_LOAD_BIT) != 0);
+ JvmtiExport::set_should_post_compiled_method_unload((any_env_thread_enabled & COMPILED_METHOD_UNLOAD_BIT) != 0);
+ JvmtiExport::set_should_post_vm_object_alloc((any_env_thread_enabled & VM_OBJECT_ALLOC_BIT) != 0);
+
+ // need this if we want thread events or we need them to init data
+ JvmtiExport::set_should_post_thread_life((any_env_thread_enabled & NEED_THREAD_LIFE_EVENTS) != 0);
+
+ // If single stepping is turned on or off, execute the VM op to change it.
+ if (delta & SINGLE_STEP_BIT) {
+ switch (JvmtiEnv::get_phase()) {
+ case JVMTI_PHASE_DEAD:
+ // If the VM is dying we can't execute VM ops
+ break;
+ case JVMTI_PHASE_LIVE: {
+ VM_ChangeSingleStep op((any_env_thread_enabled & SINGLE_STEP_BIT) != 0);
+ VMThread::execute(&op);
+ break;
+ }
+ default:
+ assert(false, "should never come here before live phase");
+ break;
+ }
+ }
+
+ // set global truly enabled, that is, any thread in any environment
+ JvmtiEventController::_universal_global_event_enabled.set_bits(any_env_thread_enabled);
+
+ // set global should_post_on_exceptions
+ JvmtiExport::set_should_post_on_exceptions((any_env_thread_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0);
+
+ }
+
+ EC_TRACE(("[-] # recompute enabled - after " JULONG_FORMAT_X, any_env_thread_enabled));
+}
+
+
+void
+JvmtiEventControllerPrivate::thread_started(JavaThread *thread) {
+ assert(thread->is_Java_thread(), "Must be JavaThread");
+ assert(thread == Thread::current(), "must be current thread");
+ assert(JvmtiEnvBase::environments_might_exist(), "to enter event controller, JVM TI environments must exist");
+
+ EC_TRACE(("[%s] # thread started", JvmtiTrace::safe_get_thread_name(thread)));
+
+ // if we have any thread filtered events globally enabled, create/update the thread state
+ if ((JvmtiEventController::_universal_global_event_enabled.get_bits() & THREAD_FILTERED_EVENT_BITS) != 0) {
+ MutexLocker mu(JvmtiThreadState_lock);
+ // create the thread state if missing
+ JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread);
+ if (state != NULL) { // skip threads with no JVMTI thread state
+ recompute_thread_enabled(state);
+ }
+ }
+}
+
+
+void
+JvmtiEventControllerPrivate::thread_ended(JavaThread *thread) {
+ // Removes the JvmtiThreadState associated with the specified thread.
+ // May be called after all environments have been disposed.
+ assert(JvmtiThreadState_lock->is_locked(), "sanity check");
+
+ EC_TRACE(("[%s] # thread ended", JvmtiTrace::safe_get_thread_name(thread)));
+
+ JvmtiThreadState *state = thread->jvmti_thread_state();
+ assert(state != NULL, "else why are we here?");
+ delete state;
+}
+
+void JvmtiEventControllerPrivate::set_event_callbacks(JvmtiEnvBase *env,
+ const jvmtiEventCallbacks* callbacks,
+ jint size_of_callbacks) {
+ assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
+ EC_TRACE(("[*] # set event callbacks"));
+
+ env->set_event_callbacks(callbacks, size_of_callbacks);
+ jlong enabled_bits = 0;
+ for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) {
+ jvmtiEvent evt_t = (jvmtiEvent)ei;
+ if (env->has_callback(evt_t)) {
+ enabled_bits |= JvmtiEventEnabled::bit_for(evt_t);
+ }
+ }
+ env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits);
+ recompute_enabled();
+}
+
+void
+JvmtiEventControllerPrivate::set_extension_event_callback(JvmtiEnvBase *env,
+ jint extension_event_index,
+ jvmtiExtensionEvent callback)
+{
+ assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
+ EC_TRACE(("[*] # set extension event callback"));
+
+ // extension events are allocated below JVMTI_MIN_EVENT_TYPE_VAL
+ assert(extension_event_index >= (jint)EXT_MIN_EVENT_TYPE_VAL &&
+ extension_event_index <= (jint)EXT_MAX_EVENT_TYPE_VAL, "sanity check");
+
+
+ // As the bits for both standard (jvmtiEvent) and extension
+ // (jvmtiExtEvents) are stored in the same word we cast here to
+ // jvmtiEvent to set/clear the bit for this extension event.
+ jvmtiEvent event_type = (jvmtiEvent)extension_event_index;
+
+ // Prevent a possible race condition where events are re-enabled by a call to
+ // set event callbacks, where the DisposeEnvironment occurs after the boiler-plate
+ // environment check and before the lock is acquired.
+ // We can safely do the is_valid check now, as JvmtiThreadState_lock is held.
+ bool enabling = (callback != NULL) && (env->is_valid());
+ env->env_event_enable()->set_user_enabled(event_type, enabling);
+
+ // update the callback
+ jvmtiExtEventCallbacks* ext_callbacks = env->ext_callbacks();
+ switch (extension_event_index) {
+ case EXT_EVENT_CLASS_UNLOAD :
+ ext_callbacks->ClassUnload = callback;
+ break;
+ default:
+ ShouldNotReachHere();
+ }
+
+ // update the callback enable/disable bit
+ jlong enabled_bits = env->env_event_enable()->_event_callback_enabled.get_bits();
+ jlong bit_for = JvmtiEventEnabled::bit_for(event_type);
+ if (enabling) {
+ enabled_bits |= bit_for;
+ } else {
+ enabled_bits &= ~bit_for;
+ }
+ env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits);
+
+ recompute_enabled();
+}
+
+
+void
+JvmtiEventControllerPrivate::env_initialize(JvmtiEnvBase *env) {
+ assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
+ EC_TRACE(("[*] # env initialize"));
+
+ if (JvmtiEnvBase::is_vm_live()) {
+ // if we didn't initialize event info already (this is a late
+ // launched environment), do it now.
+ event_init();
+ }
+
+ env->initialize();
+
+ // add the JvmtiEnvThreadState to each JvmtiThreadState
+ for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) {
+ state->add_env(env);
+ assert((JvmtiEnv*)(state->env_thread_state(env)->get_env()) == env, "sanity check");
+ }
+ JvmtiEventControllerPrivate::recompute_enabled();
+}
+
+
+void
+JvmtiEventControllerPrivate::env_dispose(JvmtiEnvBase *env) {
+ assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
+ EC_TRACE(("[*] # env dispose"));
+
+ // Before the environment is marked disposed, disable all events on this
+ // environment (by zapping the callbacks). As a result, the disposed
+ // environment will not call event handlers.
+ set_event_callbacks(env, NULL, 0);
+ for (jint extension_event_index = EXT_MIN_EVENT_TYPE_VAL;
+ extension_event_index <= EXT_MAX_EVENT_TYPE_VAL;
+ ++extension_event_index) {
+ set_extension_event_callback(env, extension_event_index, NULL);
+ }
+
+ // Let the environment finish disposing itself.
+ env->env_dispose();
+}
+
+
+void
+JvmtiEventControllerPrivate::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread,
+ jvmtiEvent event_type, bool enabled) {
+ assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check");
+
+ EC_TRACE(("[%s] # user %s event %s",
+ thread==NULL? "ALL": JvmtiTrace::safe_get_thread_name(thread),
+ enabled? "enabled" : "disabled", JvmtiTrace::event_name(event_type)));
+
+ if (thread == NULL) {
+ env->env_event_enable()->set_user_enabled(event_type, enabled);
+ } else {
+ // create the thread state (if it didn't exist before)
+ JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread);
+ if (state != NULL) {
+ state->env_thread_state(env)->event_enable()->set_user_enabled(event_type, enabled);
+ }
+ }
+ recompute_enabled();
+}
+
+
+void
+JvmtiEventControllerPrivate::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
+ EC_TRACE(("[%s] # set frame pop - frame=%d",
+ JvmtiTrace::safe_get_thread_name(ets->get_thread()),
+ fpop.frame_number() ));
+
+ ets->get_frame_pops()->set(fpop);
+ recompute_thread_enabled(ets->get_thread()->jvmti_thread_state());
+}
+
+
+void
+JvmtiEventControllerPrivate::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
+ EC_TRACE(("[%s] # clear frame pop - frame=%d",
+ JvmtiTrace::safe_get_thread_name(ets->get_thread()),
+ fpop.frame_number() ));
+
+ ets->get_frame_pops()->clear(fpop);
+ recompute_thread_enabled(ets->get_thread()->jvmti_thread_state());
+}
+
+
+void
+JvmtiEventControllerPrivate::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
+ int cleared_cnt = ets->get_frame_pops()->clear_to(fpop);
+
+ EC_TRACE(("[%s] # clear to frame pop - frame=%d, count=%d",
+ JvmtiTrace::safe_get_thread_name(ets->get_thread()),
+ fpop.frame_number(),
+ cleared_cnt ));
+
+ if (cleared_cnt > 0) {
+ recompute_thread_enabled(ets->get_thread()->jvmti_thread_state());
+ }
+}
+
+void
+JvmtiEventControllerPrivate::change_field_watch(jvmtiEvent event_type, bool added) {
+ int *count_addr;
+
+ switch (event_type) {
+ case JVMTI_EVENT_FIELD_MODIFICATION:
+ count_addr = (int *)JvmtiExport::get_field_modification_count_addr();
+ break;
+ case JVMTI_EVENT_FIELD_ACCESS:
+ count_addr = (int *)JvmtiExport::get_field_access_count_addr();
+ break;
+ default:
+ assert(false, "incorrect event");
+ return;
+ }
+
+ EC_TRACE(("[-] # change field watch - %s %s count=%d",
+ event_type==JVMTI_EVENT_FIELD_MODIFICATION? "modification" : "access",
+ added? "add" : "remove",
+ *count_addr));
+
+ if (added) {
+ (*count_addr)++;
+ if (*count_addr == 1) {
+ recompute_enabled();
+ }
+ } else {
+ if (*count_addr > 0) {
+ (*count_addr)--;
+ if (*count_addr == 0) {
+ recompute_enabled();
+ }
+ } else {
+ assert(false, "field watch out of phase");
+ }
+ }
+}
+
+void
+JvmtiEventControllerPrivate::event_init() {
+ assert(JvmtiThreadState_lock->is_locked(), "sanity check");
+
+ if (_initialized) {
+ return;
+ }
+
+ EC_TRACE(("[-] # VM live"));
+
+#ifdef ASSERT
+ // check that our idea and the spec's idea of threaded events match
+ for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) {
+ jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei);
+ assert(((THREAD_FILTERED_EVENT_BITS & bit) != 0) == JvmtiUtil::event_threaded(ei),
+ "thread filtered event list does not match");
+ }
+#endif
+
+ _initialized = true;
+}
+
+void
+JvmtiEventControllerPrivate::vm_start() {
+ // some events are now able to be enabled (phase has changed)
+ JvmtiEventControllerPrivate::recompute_enabled();
+}
+
+
+void
+JvmtiEventControllerPrivate::vm_init() {
+ event_init();
+
+ // all the events are now able to be enabled (phase has changed)
+ JvmtiEventControllerPrivate::recompute_enabled();
+}
+
+
+void
+JvmtiEventControllerPrivate::vm_death() {
+ // events are disabled (phase has changed)
+ JvmtiEventControllerPrivate::recompute_enabled();
+}
+
+
+///////////////////////////////////////////////////////////////
+//
+// JvmtiEventController
+//
+
+JvmtiEventEnabled JvmtiEventController::_universal_global_event_enabled;
+
+bool
+JvmtiEventController::is_global_event(jvmtiEvent event_type) {
+ assert(is_valid_event_type(event_type), "invalid event type");
+ jlong bit_for = ((jlong)1) << (event_type - TOTAL_MIN_EVENT_TYPE_VAL);
+ return((bit_for & GLOBAL_EVENT_BITS)!=0);
+}
+
+void
+JvmtiEventController::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, jvmtiEvent event_type, bool enabled) {
+ if (Threads::number_of_threads() == 0) {
+ // during early VM start-up locks don't exist, but we are safely single threaded,
+ // call the functionality without holding the JvmtiThreadState_lock.
+ JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled);
+ } else {
+ MutexLocker mu(JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled);
+ }
+}
+
+
+void
+JvmtiEventController::set_event_callbacks(JvmtiEnvBase *env,
+ const jvmtiEventCallbacks* callbacks,
+ jint size_of_callbacks) {
+ if (Threads::number_of_threads() == 0) {
+ // during early VM start-up locks don't exist, but we are safely single threaded,
+ // call the functionality without holding the JvmtiThreadState_lock.
+ JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks);
+ } else {
+ MutexLocker mu(JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks);
+ }
+}
+
+void
+JvmtiEventController::set_extension_event_callback(JvmtiEnvBase *env,
+ jint extension_event_index,
+ jvmtiExtensionEvent callback) {
+ if (Threads::number_of_threads() == 0) {
+ JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback);
+ } else {
+ MutexLocker mu(JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback);
+ }
+}
+
+
+
+
+void
+JvmtiEventController::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
+ MutexLockerEx mu(SafepointSynchronize::is_at_safepoint() ? NULL : JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::set_frame_pop(ets, fpop);
+}
+
+
+void
+JvmtiEventController::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
+ MutexLockerEx mu(SafepointSynchronize::is_at_safepoint() ? NULL : JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::clear_frame_pop(ets, fpop);
+}
+
+
+void
+JvmtiEventController::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) {
+ MutexLockerEx mu(SafepointSynchronize::is_at_safepoint() ? NULL : JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::clear_to_frame_pop(ets, fpop);
+}
+
+void
+JvmtiEventController::change_field_watch(jvmtiEvent event_type, bool added) {
+ MutexLocker mu(JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::change_field_watch(event_type, added);
+}
+
+void
+JvmtiEventController::thread_started(JavaThread *thread) {
+ // operates only on the current thread
+ // JvmtiThreadState_lock grabbed only if needed.
+ JvmtiEventControllerPrivate::thread_started(thread);
+}
+
+void
+JvmtiEventController::thread_ended(JavaThread *thread) {
+ // operates only on the current thread
+ // JvmtiThreadState_lock grabbed only if needed.
+ JvmtiEventControllerPrivate::thread_ended(thread);
+}
+
+void
+JvmtiEventController::env_initialize(JvmtiEnvBase *env) {
+ if (Threads::number_of_threads() == 0) {
+ // during early VM start-up locks don't exist, but we are safely single threaded,
+ // call the functionality without holding the JvmtiThreadState_lock.
+ JvmtiEventControllerPrivate::env_initialize(env);
+ } else {
+ MutexLocker mu(JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::env_initialize(env);
+ }
+}
+
+void
+JvmtiEventController::env_dispose(JvmtiEnvBase *env) {
+ if (Threads::number_of_threads() == 0) {
+ // during early VM start-up locks don't exist, but we are safely single threaded,
+ // call the functionality without holding the JvmtiThreadState_lock.
+ JvmtiEventControllerPrivate::env_dispose(env);
+ } else {
+ MutexLocker mu(JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::env_dispose(env);
+ }
+}
+
+
+void
+JvmtiEventController::vm_start() {
+ if (JvmtiEnvBase::environments_might_exist()) {
+ MutexLocker mu(JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::vm_start();
+ }
+}
+
+void
+JvmtiEventController::vm_init() {
+ if (JvmtiEnvBase::environments_might_exist()) {
+ MutexLocker mu(JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::vm_init();
+ }
+}
+
+void
+JvmtiEventController::vm_death() {
+ if (JvmtiEnvBase::environments_might_exist()) {
+ MutexLocker mu(JvmtiThreadState_lock);
+ JvmtiEventControllerPrivate::vm_death();
+ }
+}