| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ART_RUNTIME_RUNTIME_CALLBACKS_H_ |
| #define ART_RUNTIME_RUNTIME_CALLBACKS_H_ |
| |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "base/mutex.h" |
| #include "handle.h" |
| |
| namespace art { |
| |
| namespace mirror { |
| class Class; |
| } // namespace mirror |
| |
| class ClassLoadCallback; |
| class Thread; |
| class ThreadLifecycleCallback; |
| |
| // Note: RuntimeCallbacks uses the mutator lock to synchronize the callback lists. A thread must |
| // hold the exclusive lock to add or remove a listener. A thread must hold the shared lock |
| // to dispatch an event. This setup is chosen as some clients may want to suspend the |
| // dispatching thread or all threads. |
| // |
| // To make this safe, the following restrictions apply: |
| // * Only the owner of a listener may ever add or remove said listener. |
| // * A listener must never add or remove itself or any other listener while running. |
| // * It is the responsibility of the owner to not remove the listener while it is running |
| // (and suspended). |
| // |
| // The simplest way to satisfy these restrictions is to never remove a listener, and to do |
| // any state checking (is the listener enabled) in the listener itself. For an example, see |
| // Dbg. |
| |
| class RuntimeSigQuitCallback { |
| public: |
| virtual ~RuntimeSigQuitCallback() {} |
| |
| virtual void SigQuit() REQUIRES_SHARED(Locks::mutator_lock_) = 0; |
| }; |
| |
| class RuntimeCallbacks { |
| public: |
| void AddThreadLifecycleCallback(ThreadLifecycleCallback* cb) REQUIRES(Locks::mutator_lock_); |
| void RemoveThreadLifecycleCallback(ThreadLifecycleCallback* cb) REQUIRES(Locks::mutator_lock_); |
| |
| void ThreadStart(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_); |
| void ThreadDeath(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void AddClassLoadCallback(ClassLoadCallback* cb) REQUIRES(Locks::mutator_lock_); |
| void RemoveClassLoadCallback(ClassLoadCallback* cb) REQUIRES(Locks::mutator_lock_); |
| |
| void ClassLoad(Handle<mirror::Class> klass) REQUIRES_SHARED(Locks::mutator_lock_); |
| void ClassPrepare(Handle<mirror::Class> temp_klass, Handle<mirror::Class> klass) |
| REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| void AddRuntimeSigQuitCallback(RuntimeSigQuitCallback* cb) |
| REQUIRES(Locks::mutator_lock_); |
| void RemoveRuntimeSigQuitCallback(RuntimeSigQuitCallback* cb) |
| REQUIRES(Locks::mutator_lock_); |
| |
| void SigQuit() REQUIRES_SHARED(Locks::mutator_lock_); |
| |
| private: |
| std::vector<ThreadLifecycleCallback*> thread_callbacks_ |
| GUARDED_BY(Locks::mutator_lock_); |
| std::vector<ClassLoadCallback*> class_callbacks_ |
| GUARDED_BY(Locks::mutator_lock_); |
| std::vector<RuntimeSigQuitCallback*> sigquit_callbacks_ |
| GUARDED_BY(Locks::mutator_lock_); |
| }; |
| |
| } // namespace art |
| |
| #endif // ART_RUNTIME_RUNTIME_CALLBACKS_H_ |