1 /* Copyright (C) 2016 The Android Open Source Project 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * 4 * This file implements interfaces from the file jvmti.h. This implementation 5 * is licensed under the same terms as the file jvmti.h. The 6 * copyright and license information for the file jvmti.h follows. 7 * 8 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. 9 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 10 * 11 * This code is free software; you can redistribute it and/or modify it 12 * under the terms of the GNU General Public License version 2 only, as 13 * published by the Free Software Foundation. Oracle designates this 14 * particular file as subject to the "Classpath" exception as provided 15 * by Oracle in the LICENSE file that accompanied this code. 16 * 17 * This code is distributed in the hope that it will be useful, but WITHOUT 18 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 19 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 20 * version 2 for more details (a copy is included in the LICENSE file that 21 * accompanied this code). 22 * 23 * You should have received a copy of the GNU General Public License version 24 * 2 along with this work; if not, write to the Free Software Foundation, 25 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 26 * 27 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 28 * or visit www.oracle.com if you need additional information or have any 29 * questions. 30 */ 31 32 #ifndef ART_OPENJDKJVMTI_OBJECT_TAGGING_H_ 33 #define ART_OPENJDKJVMTI_OBJECT_TAGGING_H_ 34 35 #include <unordered_map> 36 37 #include "base/mutex.h" 38 #include "globals.h" 39 #include "jvmti.h" 40 #include "jvmti_weak_table.h" 41 #include "mirror/object.h" 42 43 namespace openjdkjvmti { 44 45 struct ArtJvmTiEnv; 46 class EventHandler; 47 48 class ObjectTagTable FINAL : public JvmtiWeakTable<jlong> { 49 public: 50 ObjectTagTable(EventHandler* event_handler, ArtJvmTiEnv* env) 51 : event_handler_(event_handler), jvmti_env_(env) {} 52 53 bool Set(art::mirror::Object* obj, jlong tag) OVERRIDE 54 REQUIRES_SHARED(art::Locks::mutator_lock_) 55 REQUIRES(!allow_disallow_lock_); 56 bool SetLocked(art::mirror::Object* obj, jlong tag) OVERRIDE 57 REQUIRES_SHARED(art::Locks::mutator_lock_) 58 REQUIRES(allow_disallow_lock_); 59 60 jlong GetTagOrZero(art::mirror::Object* obj) 61 REQUIRES_SHARED(art::Locks::mutator_lock_) 62 REQUIRES(!allow_disallow_lock_) { 63 jlong tmp = 0; 64 GetTag(obj, &tmp); 65 return tmp; 66 } 67 jlong GetTagOrZeroLocked(art::mirror::Object* obj) 68 REQUIRES_SHARED(art::Locks::mutator_lock_) 69 REQUIRES(allow_disallow_lock_) { 70 jlong tmp = 0; 71 GetTagLocked(obj, &tmp); 72 return tmp; 73 } 74 75 protected: 76 bool DoesHandleNullOnSweep() OVERRIDE; 77 void HandleNullSweep(jlong tag) OVERRIDE; 78 79 private: 80 EventHandler* event_handler_; 81 ArtJvmTiEnv* jvmti_env_; 82 }; 83 84 } // namespace openjdkjvmti 85 86 #endif // ART_OPENJDKJVMTI_OBJECT_TAGGING_H_ 87
