100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
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/* Copyright (C) 2016 The Android Open Source Project
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This file implements interfaces from the file jvmti.h. This implementation
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* is licensed under the same terms as the file jvmti.h. The
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* copyright and license information for the file jvmti.h follows.
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*
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* Copyright (c) 2003, 2011, 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. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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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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#include "object_tagging.h"
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#include <limits>
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#include "art_jvmti.h"
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#include "events-inl.h"
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#include "jvmti_weak_table-inl.h"
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#include "mirror/object-inl.h"
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namespace openjdkjvmti {
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// Instantiate for jlong = JVMTI tags.
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template class JvmtiWeakTable<jlong>;
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void ObjectTagTable::Allow() {
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JvmtiWeakTable<jlong>::Allow();
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SendDelayedFreeEvents();
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}
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void ObjectTagTable::Broadcast(bool broadcast_for_checkpoint) {
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JvmtiWeakTable<jlong>::Broadcast(broadcast_for_checkpoint);
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if (!broadcast_for_checkpoint) {
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SendDelayedFreeEvents();
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}
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}
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void ObjectTagTable::SendDelayedFreeEvents() {
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std::vector<jlong> to_send;
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{
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art::MutexLock mu(art::Thread::Current(), lock_);
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to_send.swap(null_tags_);
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}
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for (jlong t : to_send) {
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SendSingleFreeEvent(t);
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}
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}
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void ObjectTagTable::SendSingleFreeEvent(jlong tag) {
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event_handler_->DispatchEventOnEnv<ArtJvmtiEvent::kObjectFree>(
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jvmti_env_, art::Thread::Current(), tag);
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}
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bool ObjectTagTable::Set(art::ObjPtr<art::mirror::Object> obj, jlong new_tag) {
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if (new_tag == 0) {
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jlong tmp;
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return Remove(obj, &tmp);
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}
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return JvmtiWeakTable<jlong>::Set(obj, new_tag);
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}
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bool ObjectTagTable::SetLocked(art::ObjPtr<art::mirror::Object> obj, jlong new_tag) {
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if (new_tag == 0) {
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jlong tmp;
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return RemoveLocked(obj, &tmp);
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}
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return JvmtiWeakTable<jlong>::SetLocked(obj, new_tag);
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}
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bool ObjectTagTable::DoesHandleNullOnSweep() {
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return event_handler_->IsEventEnabledAnywhere(ArtJvmtiEvent::kObjectFree);
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}
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void ObjectTagTable::HandleNullSweep(jlong tag) {
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art::MutexLock mu(art::Thread::Current(), lock_);
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null_tags_.push_back(tag);
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}
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} // namespace openjdkjvmti
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