author | jcbeyler |
Fri, 15 Jun 2018 00:49:54 -0700 | |
changeset 50578 | e2a7f431f65c |
parent 50385 | 50bfe66c499f |
child 52877 | 9e041366c764 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "interpreter/interpreter.hpp" |
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#include "jvmtifiles/jvmtiEnv.hpp" |
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#include "logging/log.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "prims/jvmtiEventController.hpp" |
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#include "prims/jvmtiEventController.inline.hpp" |
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#include "prims/jvmtiExport.hpp" |
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#include "prims/jvmtiImpl.hpp" |
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#include "prims/jvmtiThreadState.inline.hpp" |
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#include "runtime/frame.hpp" |
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#include "runtime/thread.inline.hpp" |
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#include "runtime/threadSMR.hpp" |
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#include "runtime/vframe.hpp" |
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#include "runtime/vframe_hp.hpp" |
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#include "runtime/vmThread.hpp" |
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#include "runtime/vm_operations.hpp" |
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#ifdef JVMTI_TRACE |
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#define EC_TRACE(out) do { \ |
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if (JvmtiTrace::trace_event_controller()) { \ |
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SafeResourceMark rm; \ |
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log_trace(jvmti) out; \ |
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} \ |
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} while (0) |
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#else |
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#define EC_TRACE(out) |
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#endif /*JVMTI_TRACE */ |
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// bits for standard events |
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static const jlong SINGLE_STEP_BIT = (((jlong)1) << (JVMTI_EVENT_SINGLE_STEP - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong FRAME_POP_BIT = (((jlong)1) << (JVMTI_EVENT_FRAME_POP - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong BREAKPOINT_BIT = (((jlong)1) << (JVMTI_EVENT_BREAKPOINT - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong FIELD_ACCESS_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_ACCESS - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong FIELD_MODIFICATION_BIT = (((jlong)1) << (JVMTI_EVENT_FIELD_MODIFICATION - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong METHOD_ENTRY_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_ENTRY - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong METHOD_EXIT_BIT = (((jlong)1) << (JVMTI_EVENT_METHOD_EXIT - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong CLASS_FILE_LOAD_HOOK_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_FILE_LOAD_HOOK - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong NATIVE_METHOD_BIND_BIT = (((jlong)1) << (JVMTI_EVENT_NATIVE_METHOD_BIND - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong VM_START_BIT = (((jlong)1) << (JVMTI_EVENT_VM_START - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong VM_INIT_BIT = (((jlong)1) << (JVMTI_EVENT_VM_INIT - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong VM_DEATH_BIT = (((jlong)1) << (JVMTI_EVENT_VM_DEATH - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong CLASS_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_LOAD - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong CLASS_PREPARE_BIT = (((jlong)1) << (JVMTI_EVENT_CLASS_PREPARE - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong THREAD_START_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_START - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong THREAD_END_BIT = (((jlong)1) << (JVMTI_EVENT_THREAD_END - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong EXCEPTION_THROW_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong EXCEPTION_CATCH_BIT = (((jlong)1) << (JVMTI_EVENT_EXCEPTION_CATCH - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong MONITOR_CONTENDED_ENTER_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTER - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong MONITOR_CONTENDED_ENTERED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_CONTENDED_ENTERED - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong MONITOR_WAIT_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAIT - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong MONITOR_WAITED_BIT = (((jlong)1) << (JVMTI_EVENT_MONITOR_WAITED - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong DYNAMIC_CODE_GENERATED_BIT = (((jlong)1) << (JVMTI_EVENT_DYNAMIC_CODE_GENERATED - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong DATA_DUMP_BIT = (((jlong)1) << (JVMTI_EVENT_DATA_DUMP_REQUEST - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong COMPILED_METHOD_LOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_LOAD - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong COMPILED_METHOD_UNLOAD_BIT = (((jlong)1) << (JVMTI_EVENT_COMPILED_METHOD_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong GARBAGE_COLLECTION_START_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_START - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong GARBAGE_COLLECTION_FINISH_BIT = (((jlong)1) << (JVMTI_EVENT_GARBAGE_COLLECTION_FINISH - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong OBJECT_FREE_BIT = (((jlong)1) << (JVMTI_EVENT_OBJECT_FREE - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong RESOURCE_EXHAUSTED_BIT = (((jlong)1) << (JVMTI_EVENT_RESOURCE_EXHAUSTED - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong VM_OBJECT_ALLOC_BIT = (((jlong)1) << (JVMTI_EVENT_VM_OBJECT_ALLOC - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong SAMPLED_OBJECT_ALLOC_BIT = (((jlong)1) << (JVMTI_EVENT_SAMPLED_OBJECT_ALLOC - TOTAL_MIN_EVENT_TYPE_VAL)); |
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// bits for extension events |
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static const jlong CLASS_UNLOAD_BIT = (((jlong)1) << (EXT_EVENT_CLASS_UNLOAD - TOTAL_MIN_EVENT_TYPE_VAL)); |
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static const jlong MONITOR_BITS = MONITOR_CONTENDED_ENTER_BIT | MONITOR_CONTENDED_ENTERED_BIT | |
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MONITOR_WAIT_BIT | MONITOR_WAITED_BIT; |
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static const jlong EXCEPTION_BITS = EXCEPTION_THROW_BIT | EXCEPTION_CATCH_BIT; |
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static const jlong INTERP_EVENT_BITS = SINGLE_STEP_BIT | METHOD_ENTRY_BIT | METHOD_EXIT_BIT | |
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FRAME_POP_BIT | FIELD_ACCESS_BIT | FIELD_MODIFICATION_BIT; |
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static const jlong THREAD_FILTERED_EVENT_BITS = INTERP_EVENT_BITS | EXCEPTION_BITS | MONITOR_BITS | |
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BREAKPOINT_BIT | CLASS_LOAD_BIT | CLASS_PREPARE_BIT | THREAD_END_BIT; |
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static const jlong NEED_THREAD_LIFE_EVENTS = THREAD_FILTERED_EVENT_BITS | THREAD_START_BIT; |
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static const jlong EARLY_EVENT_BITS = CLASS_FILE_LOAD_HOOK_BIT | CLASS_LOAD_BIT | CLASS_PREPARE_BIT | |
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VM_START_BIT | VM_INIT_BIT | VM_DEATH_BIT | NATIVE_METHOD_BIND_BIT | |
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THREAD_START_BIT | THREAD_END_BIT | |
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COMPILED_METHOD_LOAD_BIT | COMPILED_METHOD_UNLOAD_BIT | |
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DYNAMIC_CODE_GENERATED_BIT; |
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static const jlong GLOBAL_EVENT_BITS = ~THREAD_FILTERED_EVENT_BITS; |
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static const jlong SHOULD_POST_ON_EXCEPTIONS_BITS = EXCEPTION_BITS | METHOD_EXIT_BIT | FRAME_POP_BIT; |
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/////////////////////////////////////////////////////////////// |
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// |
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// JvmtiEventEnabled |
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// |
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JvmtiEventEnabled::JvmtiEventEnabled() { |
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clear(); |
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} |
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void JvmtiEventEnabled::clear() { |
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_enabled_bits = 0; |
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#ifndef PRODUCT |
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_init_guard = JEE_INIT_GUARD; |
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#endif |
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} |
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void JvmtiEventEnabled::set_enabled(jvmtiEvent event_type, bool enabled) { |
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jlong bits = get_bits(); |
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jlong mask = bit_for(event_type); |
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if (enabled) { |
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bits |= mask; |
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} else { |
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bits &= ~mask; |
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} |
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set_bits(bits); |
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} |
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/////////////////////////////////////////////////////////////// |
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// |
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// JvmtiEnvThreadEventEnable |
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// |
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JvmtiEnvThreadEventEnable::JvmtiEnvThreadEventEnable() { |
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_event_user_enabled.clear(); |
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_event_enabled.clear(); |
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} |
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JvmtiEnvThreadEventEnable::~JvmtiEnvThreadEventEnable() { |
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_event_user_enabled.clear(); |
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_event_enabled.clear(); |
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} |
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/////////////////////////////////////////////////////////////// |
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// |
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// JvmtiThreadEventEnable |
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// |
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JvmtiThreadEventEnable::JvmtiThreadEventEnable() { |
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_event_enabled.clear(); |
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} |
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JvmtiThreadEventEnable::~JvmtiThreadEventEnable() { |
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_event_enabled.clear(); |
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} |
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/////////////////////////////////////////////////////////////// |
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// |
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// JvmtiEnvEventEnable |
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// |
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JvmtiEnvEventEnable::JvmtiEnvEventEnable() { |
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_event_user_enabled.clear(); |
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_event_callback_enabled.clear(); |
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_event_enabled.clear(); |
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} |
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JvmtiEnvEventEnable::~JvmtiEnvEventEnable() { |
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_event_user_enabled.clear(); |
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_event_callback_enabled.clear(); |
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_event_enabled.clear(); |
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} |
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/////////////////////////////////////////////////////////////// |
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// |
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// VM_EnterInterpOnlyMode |
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// |
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class VM_EnterInterpOnlyMode : public VM_Operation { |
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private: |
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JvmtiThreadState *_state; |
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public: |
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VM_EnterInterpOnlyMode(JvmtiThreadState *state); |
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bool allow_nested_vm_operations() const { return true; } |
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VMOp_Type type() const { return VMOp_EnterInterpOnlyMode; } |
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void doit(); |
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// to do: this same function is in jvmtiImpl - should be in one place |
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bool can_be_deoptimized(vframe* vf) { |
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return (vf->is_compiled_frame() && vf->fr().can_be_deoptimized()); |
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} |
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}; |
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VM_EnterInterpOnlyMode::VM_EnterInterpOnlyMode(JvmtiThreadState *state) |
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: _state(state) |
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{ |
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} |
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void VM_EnterInterpOnlyMode::doit() { |
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// Set up the current stack depth for later tracking |
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_state->invalidate_cur_stack_depth(); |
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_state->enter_interp_only_mode(); |
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JavaThread *thread = _state->get_thread(); |
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if (thread->has_last_Java_frame()) { |
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// If running in fullspeed mode, single stepping is implemented |
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// as follows: first, the interpreter does not dispatch to |
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// compiled code for threads that have single stepping enabled; |
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// second, we deoptimize all methods on the thread's stack when |
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// interpreted-only mode is enabled the first time for a given |
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// thread (nothing to do if no Java frames yet). |
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int num_marked = 0; |
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ResourceMark resMark; |
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RegisterMap rm(thread, false); |
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for (vframe* vf = thread->last_java_vframe(&rm); vf; vf = vf->sender()) { |
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if (can_be_deoptimized(vf)) { |
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((compiledVFrame*) vf)->code()->mark_for_deoptimization(); |
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++num_marked; |
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} |
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} |
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if (num_marked > 0) { |
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VM_Deoptimize op; |
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VMThread::execute(&op); |
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} |
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} |
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} |
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/////////////////////////////////////////////////////////////// |
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// |
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// VM_ChangeSingleStep |
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// |
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class VM_ChangeSingleStep : public VM_Operation { |
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private: |
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bool _on; |
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public: |
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VM_ChangeSingleStep(bool on); |
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VMOp_Type type() const { return VMOp_ChangeSingleStep; } |
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bool allow_nested_vm_operations() const { return true; } |
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void doit(); // method definition is after definition of JvmtiEventControllerPrivate because of scoping |
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}; |
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VM_ChangeSingleStep::VM_ChangeSingleStep(bool on) |
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: _on(on != 0) |
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{ |
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} |
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/////////////////////////////////////////////////////////////// |
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// |
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// JvmtiEventControllerPrivate |
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// |
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// Private internal implementation methods for JvmtiEventController. |
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// |
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// These methods are thread safe either because they are called |
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// in early VM initialization which is single threaded, or they |
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// hold the JvmtiThreadState_lock. |
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// |
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class JvmtiEventControllerPrivate : public AllStatic { |
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static bool _initialized; |
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public: |
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287 |
static void set_should_post_single_step(bool on); |
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static void enter_interp_only_mode(JvmtiThreadState *state); |
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static void leave_interp_only_mode(JvmtiThreadState *state); |
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static void recompute_enabled(); |
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static jlong recompute_env_enabled(JvmtiEnvBase* env); |
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static jlong recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state); |
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static jlong recompute_thread_enabled(JvmtiThreadState *state); |
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static void event_init(); |
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295 |
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296 |
static void set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, |
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297 |
jvmtiEvent event_type, bool enabled); |
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static void set_event_callbacks(JvmtiEnvBase *env, |
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const jvmtiEventCallbacks* callbacks, |
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jint size_of_callbacks); |
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301 |
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static void set_extension_event_callback(JvmtiEnvBase *env, |
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jint extension_event_index, |
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jvmtiExtensionEvent callback); |
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static void set_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); |
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static void clear_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); |
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static void clear_to_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); |
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static void change_field_watch(jvmtiEvent event_type, bool added); |
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static void thread_started(JavaThread *thread); |
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static void thread_ended(JavaThread *thread); |
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static void env_initialize(JvmtiEnvBase *env); |
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static void env_dispose(JvmtiEnvBase *env); |
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static void vm_start(); |
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static void vm_init(); |
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static void vm_death(); |
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static void trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed); |
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static void trace_changed(jlong now_enabled, jlong changed); |
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}; |
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bool JvmtiEventControllerPrivate::_initialized = false; |
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327 |
void JvmtiEventControllerPrivate::set_should_post_single_step(bool on) { |
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328 |
// we have permission to do this, VM op doesn't |
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329 |
JvmtiExport::set_should_post_single_step(on); |
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} |
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// This change must always be occur when at a safepoint. |
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334 |
// Being at a safepoint causes the interpreter to use the |
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// safepoint dispatch table which we overload to find single |
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336 |
// step points. Just to be sure that it has been set, we |
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337 |
// call notice_safepoints when turning on single stepping. |
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338 |
// When we leave our current safepoint, should_post_single_step |
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339 |
// will be checked by the interpreter, and the table kept |
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// or changed accordingly. |
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341 |
void VM_ChangeSingleStep::doit() { |
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342 |
JvmtiEventControllerPrivate::set_should_post_single_step(_on); |
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343 |
if (_on) { |
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344 |
Interpreter::notice_safepoints(); |
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} |
|
346 |
} |
|
347 |
||
348 |
||
349 |
void JvmtiEventControllerPrivate::enter_interp_only_mode(JvmtiThreadState *state) { |
|
37992 | 350 |
EC_TRACE(("[%s] # Entering interpreter only mode", |
1 | 351 |
JvmtiTrace::safe_get_thread_name(state->get_thread()))); |
352 |
||
353 |
VM_EnterInterpOnlyMode op(state); |
|
354 |
VMThread::execute(&op); |
|
355 |
} |
|
356 |
||
357 |
||
358 |
void |
|
359 |
JvmtiEventControllerPrivate::leave_interp_only_mode(JvmtiThreadState *state) { |
|
37992 | 360 |
EC_TRACE(("[%s] # Leaving interpreter only mode", |
1 | 361 |
JvmtiTrace::safe_get_thread_name(state->get_thread()))); |
362 |
state->leave_interp_only_mode(); |
|
363 |
} |
|
364 |
||
365 |
||
366 |
void |
|
367 |
JvmtiEventControllerPrivate::trace_changed(JvmtiThreadState *state, jlong now_enabled, jlong changed) { |
|
368 |
#ifdef JVMTI_TRACE |
|
369 |
if (JvmtiTrace::trace_event_controller()) { |
|
370 |
SafeResourceMark rm; |
|
371 |
// traces standard events only |
|
372 |
for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { |
|
373 |
jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); |
|
374 |
if (changed & bit) { |
|
375 |
// it changed, print it |
|
37992 | 376 |
log_trace(jvmti)("[%s] # %s event %s", |
1 | 377 |
JvmtiTrace::safe_get_thread_name(state->get_thread()), |
378 |
(now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei)); |
|
379 |
} |
|
380 |
} |
|
381 |
} |
|
382 |
#endif /*JVMTI_TRACE */ |
|
383 |
} |
|
384 |
||
385 |
||
386 |
void |
|
387 |
JvmtiEventControllerPrivate::trace_changed(jlong now_enabled, jlong changed) { |
|
388 |
#ifdef JVMTI_TRACE |
|
389 |
if (JvmtiTrace::trace_event_controller()) { |
|
390 |
SafeResourceMark rm; |
|
391 |
// traces standard events only |
|
392 |
for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { |
|
393 |
jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); |
|
394 |
if (changed & bit) { |
|
395 |
// it changed, print it |
|
37992 | 396 |
log_trace(jvmti)("[-] # %s event %s", |
1 | 397 |
(now_enabled & bit)? "Enabling" : "Disabling", JvmtiTrace::event_name((jvmtiEvent)ei)); |
398 |
} |
|
399 |
} |
|
400 |
} |
|
401 |
#endif /*JVMTI_TRACE */ |
|
402 |
} |
|
403 |
||
404 |
||
405 |
// For the specified env: compute the currently truly enabled events |
|
406 |
// set external state accordingly. |
|
407 |
// Return value and set value must include all events. |
|
408 |
// But outside this class, only non-thread-filtered events can be queried.. |
|
409 |
jlong |
|
410 |
JvmtiEventControllerPrivate::recompute_env_enabled(JvmtiEnvBase* env) { |
|
411 |
jlong was_enabled = env->env_event_enable()->_event_enabled.get_bits(); |
|
412 |
jlong now_enabled = |
|
413 |
env->env_event_enable()->_event_callback_enabled.get_bits() & |
|
414 |
env->env_event_enable()->_event_user_enabled.get_bits(); |
|
415 |
||
36508 | 416 |
switch (env->phase()) { |
1 | 417 |
case JVMTI_PHASE_PRIMORDIAL: |
418 |
case JVMTI_PHASE_ONLOAD: |
|
419 |
// only these events allowed in primordial or onload phase |
|
420 |
now_enabled &= (EARLY_EVENT_BITS & ~THREAD_FILTERED_EVENT_BITS); |
|
421 |
break; |
|
422 |
case JVMTI_PHASE_START: |
|
423 |
// only these events allowed in start phase |
|
424 |
now_enabled &= EARLY_EVENT_BITS; |
|
425 |
break; |
|
426 |
case JVMTI_PHASE_LIVE: |
|
427 |
// all events allowed during live phase |
|
428 |
break; |
|
429 |
case JVMTI_PHASE_DEAD: |
|
430 |
// no events allowed when dead |
|
431 |
now_enabled = 0; |
|
432 |
break; |
|
433 |
default: |
|
434 |
assert(false, "no other phases - sanity check"); |
|
435 |
break; |
|
436 |
} |
|
437 |
||
438 |
// will we really send these events to this env |
|
439 |
env->env_event_enable()->_event_enabled.set_bits(now_enabled); |
|
440 |
||
441 |
trace_changed(now_enabled, (now_enabled ^ was_enabled) & ~THREAD_FILTERED_EVENT_BITS); |
|
442 |
||
443 |
return now_enabled; |
|
444 |
} |
|
445 |
||
446 |
||
447 |
// For the specified env and thread: compute the currently truly enabled events |
|
448 |
// set external state accordingly. Only thread-filtered events are included. |
|
449 |
jlong |
|
450 |
JvmtiEventControllerPrivate::recompute_env_thread_enabled(JvmtiEnvThreadState* ets, JvmtiThreadState* state) { |
|
451 |
JvmtiEnv *env = ets->get_env(); |
|
452 |
||
453 |
jlong was_enabled = ets->event_enable()->_event_enabled.get_bits(); |
|
454 |
jlong now_enabled = THREAD_FILTERED_EVENT_BITS & |
|
455 |
env->env_event_enable()->_event_callback_enabled.get_bits() & |
|
456 |
(env->env_event_enable()->_event_user_enabled.get_bits() | |
|
457 |
ets->event_enable()->_event_user_enabled.get_bits()); |
|
458 |
||
459 |
// for frame pops and field watchs, computed enabled state |
|
460 |
// is only true if an event has been requested |
|
461 |
if (!ets->has_frame_pops()) { |
|
462 |
now_enabled &= ~FRAME_POP_BIT; |
|
463 |
} |
|
464 |
if (*((int *)JvmtiExport::get_field_access_count_addr()) == 0) { |
|
465 |
now_enabled &= ~FIELD_ACCESS_BIT; |
|
466 |
} |
|
467 |
if (*((int *)JvmtiExport::get_field_modification_count_addr()) == 0) { |
|
468 |
now_enabled &= ~FIELD_MODIFICATION_BIT; |
|
469 |
} |
|
470 |
||
471 |
switch (JvmtiEnv::get_phase()) { |
|
472 |
case JVMTI_PHASE_DEAD: |
|
473 |
// no events allowed when dead |
|
474 |
now_enabled = 0; |
|
475 |
break; |
|
46630
75aa3e39d02c
8182299: Enable disabled clang warnings, build on OSX 10 + Xcode 8
jwilhelm
parents:
41089
diff
changeset
|
476 |
default: |
75aa3e39d02c
8182299: Enable disabled clang warnings, build on OSX 10 + Xcode 8
jwilhelm
parents:
41089
diff
changeset
|
477 |
break; |
1 | 478 |
} |
479 |
||
480 |
// if anything changed do update |
|
481 |
if (now_enabled != was_enabled) { |
|
482 |
||
483 |
// will we really send these events to this thread x env |
|
484 |
ets->event_enable()->_event_enabled.set_bits(now_enabled); |
|
485 |
||
486 |
// If the enabled status of the single step or breakpoint events changed, |
|
487 |
// the location status may need to change as well. |
|
488 |
jlong changed = now_enabled ^ was_enabled; |
|
489 |
if (changed & SINGLE_STEP_BIT) { |
|
490 |
ets->reset_current_location(JVMTI_EVENT_SINGLE_STEP, (now_enabled & SINGLE_STEP_BIT) != 0); |
|
491 |
} |
|
492 |
if (changed & BREAKPOINT_BIT) { |
|
493 |
ets->reset_current_location(JVMTI_EVENT_BREAKPOINT, (now_enabled & BREAKPOINT_BIT) != 0); |
|
494 |
} |
|
495 |
trace_changed(state, now_enabled, changed); |
|
496 |
} |
|
497 |
return now_enabled; |
|
498 |
} |
|
499 |
||
500 |
||
501 |
// For the specified thread: compute the currently truly enabled events |
|
502 |
// set external state accordingly. Only thread-filtered events are included. |
|
503 |
jlong |
|
504 |
JvmtiEventControllerPrivate::recompute_thread_enabled(JvmtiThreadState *state) { |
|
2135
f82c3012ec86
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
dcubed
parents:
1
diff
changeset
|
505 |
if (state == NULL) { |
f82c3012ec86
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
dcubed
parents:
1
diff
changeset
|
506 |
// associated JavaThread is exiting |
f82c3012ec86
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
dcubed
parents:
1
diff
changeset
|
507 |
return (jlong)0; |
f82c3012ec86
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
dcubed
parents:
1
diff
changeset
|
508 |
} |
f82c3012ec86
6800721: 3/4 JavaThread::jvmti_thread_state() and JvmtiThreadState::state_for() robustness
dcubed
parents:
1
diff
changeset
|
509 |
|
46630
75aa3e39d02c
8182299: Enable disabled clang warnings, build on OSX 10 + Xcode 8
jwilhelm
parents:
41089
diff
changeset
|
510 |
julong was_any_env_enabled = state->thread_event_enable()->_event_enabled.get_bits(); |
75aa3e39d02c
8182299: Enable disabled clang warnings, build on OSX 10 + Xcode 8
jwilhelm
parents:
41089
diff
changeset
|
511 |
julong any_env_enabled = 0; |
50385
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
512 |
// JVMTI_EVENT_FRAME_POP can be disabled (in the case FRAME_POP_BIT is not set), |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
513 |
// but we need to set interp_only if some JvmtiEnvThreadState has frame pop set |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
514 |
// to clear the request |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
515 |
bool has_frame_pops = false; |
1 | 516 |
|
517 |
{ |
|
50385
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
518 |
// This iteration will include JvmtiEnvThreadStates whose environments |
1 | 519 |
// have been disposed. These JvmtiEnvThreadStates must not be filtered |
520 |
// as recompute must be called on them to disable their events, |
|
521 |
JvmtiEnvThreadStateIterator it(state); |
|
522 |
for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
|
523 |
any_env_enabled |= recompute_env_thread_enabled(ets, state); |
|
50385
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
524 |
has_frame_pops |= ets->has_frame_pops(); |
1 | 525 |
} |
526 |
} |
|
527 |
||
528 |
if (any_env_enabled != was_any_env_enabled) { |
|
529 |
// mark if event is truly enabled on this thread in any environment |
|
530 |
state->thread_event_enable()->_event_enabled.set_bits(any_env_enabled); |
|
531 |
||
4761
bdb7375a1fee
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
2135
diff
changeset
|
532 |
// update the JavaThread cached value for thread-specific should_post_on_exceptions value |
bdb7375a1fee
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
2135
diff
changeset
|
533 |
bool should_post_on_exceptions = (any_env_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0; |
bdb7375a1fee
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
2135
diff
changeset
|
534 |
state->set_should_post_on_exceptions(should_post_on_exceptions); |
1 | 535 |
} |
4761
bdb7375a1fee
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
2135
diff
changeset
|
536 |
|
50385
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
537 |
// compute interp_only mode |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
538 |
bool should_be_interp = (any_env_enabled & INTERP_EVENT_BITS) != 0 || has_frame_pops; |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
539 |
bool is_now_interp = state->is_interp_only_mode(); |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
540 |
|
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
541 |
if (should_be_interp != is_now_interp) { |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
542 |
if (should_be_interp) { |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
543 |
enter_interp_only_mode(state); |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
544 |
} else { |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
545 |
leave_interp_only_mode(state); |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
546 |
} |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
547 |
} |
50bfe66c499f
8187289: NotifyFramePop request is not cleared if JVMTI_EVENT_FRAME_POP is disabled
amenkov
parents:
48105
diff
changeset
|
548 |
|
1 | 549 |
return any_env_enabled; |
550 |
} |
|
551 |
||
552 |
||
553 |
// Compute truly enabled events - meaning if the event can and could be |
|
554 |
// sent. An event is truly enabled if it is user enabled on the thread |
|
555 |
// or globally user enabled, but only if there is a callback or event hook |
|
556 |
// for it and, for field watch and frame pop, one has been set. |
|
557 |
// Compute if truly enabled, per thread, per environment, per combination |
|
558 |
// (thread x environment), and overall. These merges are true if any is true. |
|
559 |
// True per thread if some environment has callback set and the event is globally |
|
560 |
// enabled or enabled for this thread. |
|
561 |
// True per environment if the callback is set and the event is globally |
|
562 |
// enabled in this environment or enabled for any thread in this environment. |
|
563 |
// True per combination if the environment has the callback set and the |
|
564 |
// event is globally enabled in this environment or the event is enabled |
|
565 |
// for this thread and environment. |
|
566 |
// |
|
567 |
// All states transitions dependent on these transitions are also handled here. |
|
568 |
void |
|
569 |
JvmtiEventControllerPrivate::recompute_enabled() { |
|
570 |
assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); |
|
571 |
||
572 |
// event enabled for any thread in any environment |
|
46630
75aa3e39d02c
8182299: Enable disabled clang warnings, build on OSX 10 + Xcode 8
jwilhelm
parents:
41089
diff
changeset
|
573 |
julong was_any_env_thread_enabled = JvmtiEventController::_universal_global_event_enabled.get_bits(); |
75aa3e39d02c
8182299: Enable disabled clang warnings, build on OSX 10 + Xcode 8
jwilhelm
parents:
41089
diff
changeset
|
574 |
julong any_env_thread_enabled = 0; |
1 | 575 |
|
46630
75aa3e39d02c
8182299: Enable disabled clang warnings, build on OSX 10 + Xcode 8
jwilhelm
parents:
41089
diff
changeset
|
576 |
EC_TRACE(("[-] # recompute enabled - before " JULONG_FORMAT_X, was_any_env_thread_enabled)); |
1 | 577 |
|
578 |
// compute non-thread-filters events. |
|
579 |
// This must be done separately from thread-filtered events, since some |
|
580 |
// events can occur before any threads exist. |
|
581 |
JvmtiEnvIterator it; |
|
582 |
for (JvmtiEnvBase* env = it.first(); env != NULL; env = it.next(env)) { |
|
583 |
any_env_thread_enabled |= recompute_env_enabled(env); |
|
584 |
} |
|
585 |
||
586 |
// We need to create any missing jvmti_thread_state if there are globally set thread |
|
587 |
// filtered events and there weren't last time |
|
588 |
if ( (any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) != 0 && |
|
589 |
(was_any_env_thread_enabled & THREAD_FILTERED_EVENT_BITS) == 0) { |
|
48105
8d15b1369c7a
8167108: inconsistent handling of SR_lock can lead to crashes
dcubed
parents:
47216
diff
changeset
|
590 |
for (JavaThreadIteratorWithHandle jtiwh; JavaThread *tp = jtiwh.next(); ) { |
8d15b1369c7a
8167108: inconsistent handling of SR_lock can lead to crashes
dcubed
parents:
47216
diff
changeset
|
591 |
// state_for_while_locked() makes tp->is_exiting() check |
8d15b1369c7a
8167108: inconsistent handling of SR_lock can lead to crashes
dcubed
parents:
47216
diff
changeset
|
592 |
JvmtiThreadState::state_for_while_locked(tp); // create the thread state if missing |
8d15b1369c7a
8167108: inconsistent handling of SR_lock can lead to crashes
dcubed
parents:
47216
diff
changeset
|
593 |
} |
1 | 594 |
} |
595 |
||
596 |
// compute and set thread-filtered events |
|
597 |
for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) { |
|
598 |
any_env_thread_enabled |= recompute_thread_enabled(state); |
|
599 |
} |
|
600 |
||
601 |
// set universal state (across all envs and threads) |
|
602 |
jlong delta = any_env_thread_enabled ^ was_any_env_thread_enabled; |
|
603 |
if (delta != 0) { |
|
604 |
JvmtiExport::set_should_post_field_access((any_env_thread_enabled & FIELD_ACCESS_BIT) != 0); |
|
605 |
JvmtiExport::set_should_post_field_modification((any_env_thread_enabled & FIELD_MODIFICATION_BIT) != 0); |
|
606 |
JvmtiExport::set_should_post_class_load((any_env_thread_enabled & CLASS_LOAD_BIT) != 0); |
|
607 |
JvmtiExport::set_should_post_class_file_load_hook((any_env_thread_enabled & CLASS_FILE_LOAD_HOOK_BIT) != 0); |
|
608 |
JvmtiExport::set_should_post_native_method_bind((any_env_thread_enabled & NATIVE_METHOD_BIND_BIT) != 0); |
|
609 |
JvmtiExport::set_should_post_dynamic_code_generated((any_env_thread_enabled & DYNAMIC_CODE_GENERATED_BIT) != 0); |
|
610 |
JvmtiExport::set_should_post_data_dump((any_env_thread_enabled & DATA_DUMP_BIT) != 0); |
|
611 |
JvmtiExport::set_should_post_class_prepare((any_env_thread_enabled & CLASS_PREPARE_BIT) != 0); |
|
612 |
JvmtiExport::set_should_post_class_unload((any_env_thread_enabled & CLASS_UNLOAD_BIT) != 0); |
|
613 |
JvmtiExport::set_should_post_monitor_contended_enter((any_env_thread_enabled & MONITOR_CONTENDED_ENTER_BIT) != 0); |
|
614 |
JvmtiExport::set_should_post_monitor_contended_entered((any_env_thread_enabled & MONITOR_CONTENDED_ENTERED_BIT) != 0); |
|
615 |
JvmtiExport::set_should_post_monitor_wait((any_env_thread_enabled & MONITOR_WAIT_BIT) != 0); |
|
616 |
JvmtiExport::set_should_post_monitor_waited((any_env_thread_enabled & MONITOR_WAITED_BIT) != 0); |
|
617 |
JvmtiExport::set_should_post_garbage_collection_start((any_env_thread_enabled & GARBAGE_COLLECTION_START_BIT) != 0); |
|
618 |
JvmtiExport::set_should_post_garbage_collection_finish((any_env_thread_enabled & GARBAGE_COLLECTION_FINISH_BIT) != 0); |
|
619 |
JvmtiExport::set_should_post_object_free((any_env_thread_enabled & OBJECT_FREE_BIT) != 0); |
|
620 |
JvmtiExport::set_should_post_resource_exhausted((any_env_thread_enabled & RESOURCE_EXHAUSTED_BIT) != 0); |
|
621 |
JvmtiExport::set_should_post_compiled_method_load((any_env_thread_enabled & COMPILED_METHOD_LOAD_BIT) != 0); |
|
622 |
JvmtiExport::set_should_post_compiled_method_unload((any_env_thread_enabled & COMPILED_METHOD_UNLOAD_BIT) != 0); |
|
623 |
JvmtiExport::set_should_post_vm_object_alloc((any_env_thread_enabled & VM_OBJECT_ALLOC_BIT) != 0); |
|
50578
e2a7f431f65c
8203394: Implementation of JEP 331: Low-Overhead Heap Profiling
jcbeyler
parents:
50385
diff
changeset
|
624 |
JvmtiExport::set_should_post_sampled_object_alloc((any_env_thread_enabled & SAMPLED_OBJECT_ALLOC_BIT) != 0); |
1 | 625 |
|
626 |
// need this if we want thread events or we need them to init data |
|
627 |
JvmtiExport::set_should_post_thread_life((any_env_thread_enabled & NEED_THREAD_LIFE_EVENTS) != 0); |
|
628 |
||
629 |
// If single stepping is turned on or off, execute the VM op to change it. |
|
630 |
if (delta & SINGLE_STEP_BIT) { |
|
631 |
switch (JvmtiEnv::get_phase()) { |
|
632 |
case JVMTI_PHASE_DEAD: |
|
633 |
// If the VM is dying we can't execute VM ops |
|
634 |
break; |
|
635 |
case JVMTI_PHASE_LIVE: { |
|
636 |
VM_ChangeSingleStep op((any_env_thread_enabled & SINGLE_STEP_BIT) != 0); |
|
637 |
VMThread::execute(&op); |
|
638 |
break; |
|
639 |
} |
|
640 |
default: |
|
641 |
assert(false, "should never come here before live phase"); |
|
642 |
break; |
|
643 |
} |
|
644 |
} |
|
645 |
||
646 |
// set global truly enabled, that is, any thread in any environment |
|
647 |
JvmtiEventController::_universal_global_event_enabled.set_bits(any_env_thread_enabled); |
|
4761
bdb7375a1fee
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
2135
diff
changeset
|
648 |
|
bdb7375a1fee
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
2135
diff
changeset
|
649 |
// set global should_post_on_exceptions |
bdb7375a1fee
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
2135
diff
changeset
|
650 |
JvmtiExport::set_should_post_on_exceptions((any_env_thread_enabled & SHOULD_POST_ON_EXCEPTIONS_BITS) != 0); |
bdb7375a1fee
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
2135
diff
changeset
|
651 |
|
1 | 652 |
} |
653 |
||
46630
75aa3e39d02c
8182299: Enable disabled clang warnings, build on OSX 10 + Xcode 8
jwilhelm
parents:
41089
diff
changeset
|
654 |
EC_TRACE(("[-] # recompute enabled - after " JULONG_FORMAT_X, any_env_thread_enabled)); |
1 | 655 |
} |
656 |
||
657 |
||
658 |
void |
|
659 |
JvmtiEventControllerPrivate::thread_started(JavaThread *thread) { |
|
660 |
assert(thread->is_Java_thread(), "Must be JavaThread"); |
|
661 |
assert(thread == Thread::current(), "must be current thread"); |
|
662 |
assert(JvmtiEnvBase::environments_might_exist(), "to enter event controller, JVM TI environments must exist"); |
|
663 |
||
37992 | 664 |
EC_TRACE(("[%s] # thread started", JvmtiTrace::safe_get_thread_name(thread))); |
1 | 665 |
|
666 |
// if we have any thread filtered events globally enabled, create/update the thread state |
|
667 |
if ((JvmtiEventController::_universal_global_event_enabled.get_bits() & THREAD_FILTERED_EVENT_BITS) != 0) { |
|
668 |
MutexLocker mu(JvmtiThreadState_lock); |
|
669 |
// create the thread state if missing |
|
670 |
JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread); |
|
671 |
if (state != NULL) { // skip threads with no JVMTI thread state |
|
672 |
recompute_thread_enabled(state); |
|
673 |
} |
|
674 |
} |
|
675 |
} |
|
676 |
||
677 |
||
678 |
void |
|
679 |
JvmtiEventControllerPrivate::thread_ended(JavaThread *thread) { |
|
680 |
// Removes the JvmtiThreadState associated with the specified thread. |
|
681 |
// May be called after all environments have been disposed. |
|
7897
201a8b00ec91
6814943: getcpool001 catches more than one JvmtiThreadState problem
kamg
parents:
7397
diff
changeset
|
682 |
assert(JvmtiThreadState_lock->is_locked(), "sanity check"); |
1 | 683 |
|
37992 | 684 |
EC_TRACE(("[%s] # thread ended", JvmtiTrace::safe_get_thread_name(thread))); |
1 | 685 |
|
686 |
JvmtiThreadState *state = thread->jvmti_thread_state(); |
|
7897
201a8b00ec91
6814943: getcpool001 catches more than one JvmtiThreadState problem
kamg
parents:
7397
diff
changeset
|
687 |
assert(state != NULL, "else why are we here?"); |
201a8b00ec91
6814943: getcpool001 catches more than one JvmtiThreadState problem
kamg
parents:
7397
diff
changeset
|
688 |
delete state; |
1 | 689 |
} |
690 |
||
691 |
void JvmtiEventControllerPrivate::set_event_callbacks(JvmtiEnvBase *env, |
|
692 |
const jvmtiEventCallbacks* callbacks, |
|
693 |
jint size_of_callbacks) { |
|
694 |
assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); |
|
37992 | 695 |
EC_TRACE(("[*] # set event callbacks")); |
1 | 696 |
|
697 |
env->set_event_callbacks(callbacks, size_of_callbacks); |
|
698 |
jlong enabled_bits = 0; |
|
699 |
for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { |
|
700 |
jvmtiEvent evt_t = (jvmtiEvent)ei; |
|
701 |
if (env->has_callback(evt_t)) { |
|
702 |
enabled_bits |= JvmtiEventEnabled::bit_for(evt_t); |
|
703 |
} |
|
704 |
} |
|
705 |
env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits); |
|
706 |
recompute_enabled(); |
|
707 |
} |
|
708 |
||
709 |
void |
|
710 |
JvmtiEventControllerPrivate::set_extension_event_callback(JvmtiEnvBase *env, |
|
711 |
jint extension_event_index, |
|
712 |
jvmtiExtensionEvent callback) |
|
713 |
{ |
|
714 |
assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); |
|
37992 | 715 |
EC_TRACE(("[*] # set extension event callback")); |
1 | 716 |
|
717 |
// extension events are allocated below JVMTI_MIN_EVENT_TYPE_VAL |
|
718 |
assert(extension_event_index >= (jint)EXT_MIN_EVENT_TYPE_VAL && |
|
719 |
extension_event_index <= (jint)EXT_MAX_EVENT_TYPE_VAL, "sanity check"); |
|
720 |
||
721 |
||
722 |
// As the bits for both standard (jvmtiEvent) and extension |
|
723 |
// (jvmtiExtEvents) are stored in the same word we cast here to |
|
724 |
// jvmtiEvent to set/clear the bit for this extension event. |
|
725 |
jvmtiEvent event_type = (jvmtiEvent)extension_event_index; |
|
726 |
||
727 |
// Prevent a possible race condition where events are re-enabled by a call to |
|
728 |
// set event callbacks, where the DisposeEnvironment occurs after the boiler-plate |
|
729 |
// environment check and before the lock is acquired. |
|
730 |
// We can safely do the is_valid check now, as JvmtiThreadState_lock is held. |
|
731 |
bool enabling = (callback != NULL) && (env->is_valid()); |
|
732 |
env->env_event_enable()->set_user_enabled(event_type, enabling); |
|
733 |
||
734 |
// update the callback |
|
735 |
jvmtiExtEventCallbacks* ext_callbacks = env->ext_callbacks(); |
|
736 |
switch (extension_event_index) { |
|
737 |
case EXT_EVENT_CLASS_UNLOAD : |
|
738 |
ext_callbacks->ClassUnload = callback; |
|
739 |
break; |
|
740 |
default: |
|
741 |
ShouldNotReachHere(); |
|
742 |
} |
|
743 |
||
744 |
// update the callback enable/disable bit |
|
745 |
jlong enabled_bits = env->env_event_enable()->_event_callback_enabled.get_bits(); |
|
746 |
jlong bit_for = JvmtiEventEnabled::bit_for(event_type); |
|
747 |
if (enabling) { |
|
748 |
enabled_bits |= bit_for; |
|
749 |
} else { |
|
750 |
enabled_bits &= ~bit_for; |
|
751 |
} |
|
752 |
env->env_event_enable()->_event_callback_enabled.set_bits(enabled_bits); |
|
753 |
||
754 |
recompute_enabled(); |
|
755 |
} |
|
756 |
||
757 |
||
758 |
void |
|
759 |
JvmtiEventControllerPrivate::env_initialize(JvmtiEnvBase *env) { |
|
760 |
assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); |
|
37992 | 761 |
EC_TRACE(("[*] # env initialize")); |
1 | 762 |
|
763 |
if (JvmtiEnvBase::is_vm_live()) { |
|
764 |
// if we didn't initialize event info already (this is a late |
|
765 |
// launched environment), do it now. |
|
766 |
event_init(); |
|
767 |
} |
|
768 |
||
769 |
env->initialize(); |
|
770 |
||
771 |
// add the JvmtiEnvThreadState to each JvmtiThreadState |
|
772 |
for (JvmtiThreadState *state = JvmtiThreadState::first(); state != NULL; state = state->next()) { |
|
773 |
state->add_env(env); |
|
774 |
assert((JvmtiEnv*)(state->env_thread_state(env)->get_env()) == env, "sanity check"); |
|
775 |
} |
|
776 |
JvmtiEventControllerPrivate::recompute_enabled(); |
|
777 |
} |
|
778 |
||
779 |
||
780 |
void |
|
781 |
JvmtiEventControllerPrivate::env_dispose(JvmtiEnvBase *env) { |
|
782 |
assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); |
|
37992 | 783 |
EC_TRACE(("[*] # env dispose")); |
1 | 784 |
|
785 |
// Before the environment is marked disposed, disable all events on this |
|
786 |
// environment (by zapping the callbacks). As a result, the disposed |
|
787 |
// environment will not call event handlers. |
|
788 |
set_event_callbacks(env, NULL, 0); |
|
789 |
for (jint extension_event_index = EXT_MIN_EVENT_TYPE_VAL; |
|
790 |
extension_event_index <= EXT_MAX_EVENT_TYPE_VAL; |
|
791 |
++extension_event_index) { |
|
792 |
set_extension_event_callback(env, extension_event_index, NULL); |
|
793 |
} |
|
794 |
||
795 |
// Let the environment finish disposing itself. |
|
796 |
env->env_dispose(); |
|
797 |
} |
|
798 |
||
799 |
||
800 |
void |
|
801 |
JvmtiEventControllerPrivate::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, |
|
802 |
jvmtiEvent event_type, bool enabled) { |
|
803 |
assert(Threads::number_of_threads() == 0 || JvmtiThreadState_lock->is_locked(), "sanity check"); |
|
804 |
||
37992 | 805 |
EC_TRACE(("[%s] # user %s event %s", |
1 | 806 |
thread==NULL? "ALL": JvmtiTrace::safe_get_thread_name(thread), |
807 |
enabled? "enabled" : "disabled", JvmtiTrace::event_name(event_type))); |
|
808 |
||
809 |
if (thread == NULL) { |
|
810 |
env->env_event_enable()->set_user_enabled(event_type, enabled); |
|
811 |
} else { |
|
812 |
// create the thread state (if it didn't exist before) |
|
813 |
JvmtiThreadState *state = JvmtiThreadState::state_for_while_locked(thread); |
|
814 |
if (state != NULL) { |
|
815 |
state->env_thread_state(env)->event_enable()->set_user_enabled(event_type, enabled); |
|
816 |
} |
|
817 |
} |
|
818 |
recompute_enabled(); |
|
819 |
} |
|
820 |
||
821 |
||
822 |
void |
|
823 |
JvmtiEventControllerPrivate::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { |
|
37992 | 824 |
EC_TRACE(("[%s] # set frame pop - frame=%d", |
1 | 825 |
JvmtiTrace::safe_get_thread_name(ets->get_thread()), |
826 |
fpop.frame_number() )); |
|
827 |
||
828 |
ets->get_frame_pops()->set(fpop); |
|
829 |
recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); |
|
830 |
} |
|
831 |
||
832 |
||
833 |
void |
|
834 |
JvmtiEventControllerPrivate::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { |
|
37992 | 835 |
EC_TRACE(("[%s] # clear frame pop - frame=%d", |
1 | 836 |
JvmtiTrace::safe_get_thread_name(ets->get_thread()), |
837 |
fpop.frame_number() )); |
|
838 |
||
839 |
ets->get_frame_pops()->clear(fpop); |
|
840 |
recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); |
|
841 |
} |
|
842 |
||
843 |
||
844 |
void |
|
845 |
JvmtiEventControllerPrivate::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { |
|
846 |
int cleared_cnt = ets->get_frame_pops()->clear_to(fpop); |
|
847 |
||
37992 | 848 |
EC_TRACE(("[%s] # clear to frame pop - frame=%d, count=%d", |
1 | 849 |
JvmtiTrace::safe_get_thread_name(ets->get_thread()), |
850 |
fpop.frame_number(), |
|
851 |
cleared_cnt )); |
|
852 |
||
853 |
if (cleared_cnt > 0) { |
|
854 |
recompute_thread_enabled(ets->get_thread()->jvmti_thread_state()); |
|
855 |
} |
|
856 |
} |
|
857 |
||
858 |
void |
|
859 |
JvmtiEventControllerPrivate::change_field_watch(jvmtiEvent event_type, bool added) { |
|
860 |
int *count_addr; |
|
861 |
||
862 |
switch (event_type) { |
|
863 |
case JVMTI_EVENT_FIELD_MODIFICATION: |
|
864 |
count_addr = (int *)JvmtiExport::get_field_modification_count_addr(); |
|
865 |
break; |
|
866 |
case JVMTI_EVENT_FIELD_ACCESS: |
|
867 |
count_addr = (int *)JvmtiExport::get_field_access_count_addr(); |
|
868 |
break; |
|
869 |
default: |
|
870 |
assert(false, "incorrect event"); |
|
871 |
return; |
|
872 |
} |
|
873 |
||
37992 | 874 |
EC_TRACE(("[-] # change field watch - %s %s count=%d", |
1 | 875 |
event_type==JVMTI_EVENT_FIELD_MODIFICATION? "modification" : "access", |
876 |
added? "add" : "remove", |
|
877 |
*count_addr)); |
|
878 |
||
879 |
if (added) { |
|
880 |
(*count_addr)++; |
|
881 |
if (*count_addr == 1) { |
|
882 |
recompute_enabled(); |
|
883 |
} |
|
884 |
} else { |
|
885 |
if (*count_addr > 0) { |
|
886 |
(*count_addr)--; |
|
887 |
if (*count_addr == 0) { |
|
888 |
recompute_enabled(); |
|
889 |
} |
|
890 |
} else { |
|
891 |
assert(false, "field watch out of phase"); |
|
892 |
} |
|
893 |
} |
|
894 |
} |
|
895 |
||
896 |
void |
|
897 |
JvmtiEventControllerPrivate::event_init() { |
|
898 |
assert(JvmtiThreadState_lock->is_locked(), "sanity check"); |
|
899 |
||
900 |
if (_initialized) { |
|
901 |
return; |
|
902 |
} |
|
903 |
||
37992 | 904 |
EC_TRACE(("[-] # VM live")); |
1 | 905 |
|
906 |
#ifdef ASSERT |
|
907 |
// check that our idea and the spec's idea of threaded events match |
|
908 |
for (int ei = JVMTI_MIN_EVENT_TYPE_VAL; ei <= JVMTI_MAX_EVENT_TYPE_VAL; ++ei) { |
|
909 |
jlong bit = JvmtiEventEnabled::bit_for((jvmtiEvent)ei); |
|
910 |
assert(((THREAD_FILTERED_EVENT_BITS & bit) != 0) == JvmtiUtil::event_threaded(ei), |
|
911 |
"thread filtered event list does not match"); |
|
912 |
} |
|
913 |
#endif |
|
914 |
||
915 |
_initialized = true; |
|
916 |
} |
|
917 |
||
918 |
void |
|
919 |
JvmtiEventControllerPrivate::vm_start() { |
|
920 |
// some events are now able to be enabled (phase has changed) |
|
921 |
JvmtiEventControllerPrivate::recompute_enabled(); |
|
922 |
} |
|
923 |
||
924 |
||
925 |
void |
|
926 |
JvmtiEventControllerPrivate::vm_init() { |
|
927 |
event_init(); |
|
928 |
||
929 |
// all the events are now able to be enabled (phase has changed) |
|
930 |
JvmtiEventControllerPrivate::recompute_enabled(); |
|
931 |
} |
|
932 |
||
933 |
||
934 |
void |
|
935 |
JvmtiEventControllerPrivate::vm_death() { |
|
936 |
// events are disabled (phase has changed) |
|
937 |
JvmtiEventControllerPrivate::recompute_enabled(); |
|
938 |
} |
|
939 |
||
940 |
||
941 |
/////////////////////////////////////////////////////////////// |
|
942 |
// |
|
943 |
// JvmtiEventController |
|
944 |
// |
|
945 |
||
946 |
JvmtiEventEnabled JvmtiEventController::_universal_global_event_enabled; |
|
947 |
||
948 |
bool |
|
949 |
JvmtiEventController::is_global_event(jvmtiEvent event_type) { |
|
950 |
assert(is_valid_event_type(event_type), "invalid event type"); |
|
951 |
jlong bit_for = ((jlong)1) << (event_type - TOTAL_MIN_EVENT_TYPE_VAL); |
|
952 |
return((bit_for & GLOBAL_EVENT_BITS)!=0); |
|
953 |
} |
|
954 |
||
955 |
void |
|
956 |
JvmtiEventController::set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, jvmtiEvent event_type, bool enabled) { |
|
957 |
if (Threads::number_of_threads() == 0) { |
|
958 |
// during early VM start-up locks don't exist, but we are safely single threaded, |
|
959 |
// call the functionality without holding the JvmtiThreadState_lock. |
|
960 |
JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled); |
|
961 |
} else { |
|
962 |
MutexLocker mu(JvmtiThreadState_lock); |
|
963 |
JvmtiEventControllerPrivate::set_user_enabled(env, thread, event_type, enabled); |
|
964 |
} |
|
965 |
} |
|
966 |
||
967 |
||
968 |
void |
|
969 |
JvmtiEventController::set_event_callbacks(JvmtiEnvBase *env, |
|
970 |
const jvmtiEventCallbacks* callbacks, |
|
971 |
jint size_of_callbacks) { |
|
972 |
if (Threads::number_of_threads() == 0) { |
|
973 |
// during early VM start-up locks don't exist, but we are safely single threaded, |
|
974 |
// call the functionality without holding the JvmtiThreadState_lock. |
|
975 |
JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks); |
|
976 |
} else { |
|
977 |
MutexLocker mu(JvmtiThreadState_lock); |
|
978 |
JvmtiEventControllerPrivate::set_event_callbacks(env, callbacks, size_of_callbacks); |
|
979 |
} |
|
980 |
} |
|
981 |
||
982 |
void |
|
983 |
JvmtiEventController::set_extension_event_callback(JvmtiEnvBase *env, |
|
984 |
jint extension_event_index, |
|
985 |
jvmtiExtensionEvent callback) { |
|
986 |
if (Threads::number_of_threads() == 0) { |
|
987 |
JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback); |
|
988 |
} else { |
|
989 |
MutexLocker mu(JvmtiThreadState_lock); |
|
990 |
JvmtiEventControllerPrivate::set_extension_event_callback(env, extension_event_index, callback); |
|
991 |
} |
|
992 |
} |
|
993 |
||
994 |
||
995 |
||
996 |
||
997 |
void |
|
998 |
JvmtiEventController::set_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { |
|
23180
e87156376bed
6471769: Error: assert(_cur_stack_depth == count_frames(),"cur_stack_depth out of sync")
sspitsyn
parents:
22234
diff
changeset
|
999 |
MutexLockerEx mu(SafepointSynchronize::is_at_safepoint() ? NULL : JvmtiThreadState_lock); |
1 | 1000 |
JvmtiEventControllerPrivate::set_frame_pop(ets, fpop); |
1001 |
} |
|
1002 |
||
1003 |
||
1004 |
void |
|
1005 |
JvmtiEventController::clear_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { |
|
23180
e87156376bed
6471769: Error: assert(_cur_stack_depth == count_frames(),"cur_stack_depth out of sync")
sspitsyn
parents:
22234
diff
changeset
|
1006 |
MutexLockerEx mu(SafepointSynchronize::is_at_safepoint() ? NULL : JvmtiThreadState_lock); |
1 | 1007 |
JvmtiEventControllerPrivate::clear_frame_pop(ets, fpop); |
1008 |
} |
|
1009 |
||
1010 |
||
1011 |
void |
|
1012 |
JvmtiEventController::clear_to_frame_pop(JvmtiEnvThreadState *ets, JvmtiFramePop fpop) { |
|
23180
e87156376bed
6471769: Error: assert(_cur_stack_depth == count_frames(),"cur_stack_depth out of sync")
sspitsyn
parents:
22234
diff
changeset
|
1013 |
MutexLockerEx mu(SafepointSynchronize::is_at_safepoint() ? NULL : JvmtiThreadState_lock); |
1 | 1014 |
JvmtiEventControllerPrivate::clear_to_frame_pop(ets, fpop); |
1015 |
} |
|
1016 |
||
1017 |
void |
|
1018 |
JvmtiEventController::change_field_watch(jvmtiEvent event_type, bool added) { |
|
1019 |
MutexLocker mu(JvmtiThreadState_lock); |
|
1020 |
JvmtiEventControllerPrivate::change_field_watch(event_type, added); |
|
1021 |
} |
|
1022 |
||
1023 |
void |
|
1024 |
JvmtiEventController::thread_started(JavaThread *thread) { |
|
1025 |
// operates only on the current thread |
|
1026 |
// JvmtiThreadState_lock grabbed only if needed. |
|
1027 |
JvmtiEventControllerPrivate::thread_started(thread); |
|
1028 |
} |
|
1029 |
||
1030 |
void |
|
1031 |
JvmtiEventController::thread_ended(JavaThread *thread) { |
|
1032 |
// operates only on the current thread |
|
1033 |
// JvmtiThreadState_lock grabbed only if needed. |
|
1034 |
JvmtiEventControllerPrivate::thread_ended(thread); |
|
1035 |
} |
|
1036 |
||
1037 |
void |
|
1038 |
JvmtiEventController::env_initialize(JvmtiEnvBase *env) { |
|
1039 |
if (Threads::number_of_threads() == 0) { |
|
1040 |
// during early VM start-up locks don't exist, but we are safely single threaded, |
|
1041 |
// call the functionality without holding the JvmtiThreadState_lock. |
|
1042 |
JvmtiEventControllerPrivate::env_initialize(env); |
|
1043 |
} else { |
|
1044 |
MutexLocker mu(JvmtiThreadState_lock); |
|
1045 |
JvmtiEventControllerPrivate::env_initialize(env); |
|
1046 |
} |
|
1047 |
} |
|
1048 |
||
1049 |
void |
|
1050 |
JvmtiEventController::env_dispose(JvmtiEnvBase *env) { |
|
1051 |
if (Threads::number_of_threads() == 0) { |
|
1052 |
// during early VM start-up locks don't exist, but we are safely single threaded, |
|
1053 |
// call the functionality without holding the JvmtiThreadState_lock. |
|
1054 |
JvmtiEventControllerPrivate::env_dispose(env); |
|
1055 |
} else { |
|
1056 |
MutexLocker mu(JvmtiThreadState_lock); |
|
1057 |
JvmtiEventControllerPrivate::env_dispose(env); |
|
1058 |
} |
|
1059 |
} |
|
1060 |
||
1061 |
||
1062 |
void |
|
1063 |
JvmtiEventController::vm_start() { |
|
1064 |
if (JvmtiEnvBase::environments_might_exist()) { |
|
1065 |
MutexLocker mu(JvmtiThreadState_lock); |
|
1066 |
JvmtiEventControllerPrivate::vm_start(); |
|
1067 |
} |
|
1068 |
} |
|
1069 |
||
1070 |
void |
|
1071 |
JvmtiEventController::vm_init() { |
|
1072 |
if (JvmtiEnvBase::environments_might_exist()) { |
|
1073 |
MutexLocker mu(JvmtiThreadState_lock); |
|
1074 |
JvmtiEventControllerPrivate::vm_init(); |
|
1075 |
} |
|
1076 |
} |
|
1077 |
||
1078 |
void |
|
1079 |
JvmtiEventController::vm_death() { |
|
1080 |
if (JvmtiEnvBase::environments_might_exist()) { |
|
1081 |
MutexLocker mu(JvmtiThreadState_lock); |
|
1082 |
JvmtiEventControllerPrivate::vm_death(); |
|
1083 |
} |
|
1084 |
} |