138 lines
5.1 KiB
C++
138 lines
5.1 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_RUNTIME_CALLBACKS_H_
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#define ART_RUNTIME_RUNTIME_CALLBACKS_H_
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#include <vector>
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#include "base/macros.h"
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#include "base/mutex.h"
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#include "dex_file.h"
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#include "handle.h"
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namespace art {
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namespace mirror {
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class Class;
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class ClassLoader;
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} // namespace mirror
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class ArtMethod;
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class ClassLoadCallback;
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class Thread;
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class MethodCallback;
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class ThreadLifecycleCallback;
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// Note: RuntimeCallbacks uses the mutator lock to synchronize the callback lists. A thread must
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// hold the exclusive lock to add or remove a listener. A thread must hold the shared lock
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// to dispatch an event. This setup is chosen as some clients may want to suspend the
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// dispatching thread or all threads.
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//
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// To make this safe, the following restrictions apply:
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// * Only the owner of a listener may ever add or remove said listener.
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// * A listener must never add or remove itself or any other listener while running.
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// * It is the responsibility of the owner to not remove the listener while it is running
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// (and suspended).
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//
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// The simplest way to satisfy these restrictions is to never remove a listener, and to do
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// any state checking (is the listener enabled) in the listener itself. For an example, see
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// Dbg.
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class RuntimeSigQuitCallback {
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public:
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virtual ~RuntimeSigQuitCallback() {}
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virtual void SigQuit() REQUIRES_SHARED(Locks::mutator_lock_) = 0;
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};
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class RuntimePhaseCallback {
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public:
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enum RuntimePhase {
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kInitialAgents, // Initial agent loading is done.
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kStart, // The runtime is started.
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kInit, // The runtime is initialized (and will run user code soon).
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kDeath, // The runtime just died.
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};
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virtual ~RuntimePhaseCallback() {}
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virtual void NextRuntimePhase(RuntimePhase phase) REQUIRES_SHARED(Locks::mutator_lock_) = 0;
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};
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class RuntimeCallbacks {
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public:
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void AddThreadLifecycleCallback(ThreadLifecycleCallback* cb) REQUIRES(Locks::mutator_lock_);
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void RemoveThreadLifecycleCallback(ThreadLifecycleCallback* cb) REQUIRES(Locks::mutator_lock_);
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void ThreadStart(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_);
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void ThreadDeath(Thread* self) REQUIRES_SHARED(Locks::mutator_lock_);
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void AddClassLoadCallback(ClassLoadCallback* cb) REQUIRES(Locks::mutator_lock_);
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void RemoveClassLoadCallback(ClassLoadCallback* cb) REQUIRES(Locks::mutator_lock_);
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void ClassLoad(Handle<mirror::Class> klass) REQUIRES_SHARED(Locks::mutator_lock_);
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void ClassPrepare(Handle<mirror::Class> temp_klass, Handle<mirror::Class> klass)
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REQUIRES_SHARED(Locks::mutator_lock_);
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void AddRuntimeSigQuitCallback(RuntimeSigQuitCallback* cb)
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REQUIRES(Locks::mutator_lock_);
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void RemoveRuntimeSigQuitCallback(RuntimeSigQuitCallback* cb)
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REQUIRES(Locks::mutator_lock_);
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void SigQuit() REQUIRES_SHARED(Locks::mutator_lock_);
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void AddRuntimePhaseCallback(RuntimePhaseCallback* cb)
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REQUIRES(Locks::mutator_lock_);
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void RemoveRuntimePhaseCallback(RuntimePhaseCallback* cb)
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REQUIRES(Locks::mutator_lock_);
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void NextRuntimePhase(RuntimePhaseCallback::RuntimePhase phase)
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REQUIRES_SHARED(Locks::mutator_lock_);
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void ClassPreDefine(const char* descriptor,
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Handle<mirror::Class> temp_class,
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Handle<mirror::ClassLoader> loader,
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const DexFile& initial_dex_file,
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const DexFile::ClassDef& initial_class_def,
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/*out*/DexFile const** final_dex_file,
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/*out*/DexFile::ClassDef const** final_class_def)
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REQUIRES_SHARED(Locks::mutator_lock_);
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void AddMethodCallback(MethodCallback* cb) REQUIRES(Locks::mutator_lock_);
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void RemoveMethodCallback(MethodCallback* cb) REQUIRES(Locks::mutator_lock_);
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void RegisterNativeMethod(ArtMethod* method,
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const void* original_implementation,
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/*out*/void** new_implementation)
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REQUIRES_SHARED(Locks::mutator_lock_);
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private:
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std::vector<ThreadLifecycleCallback*> thread_callbacks_
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GUARDED_BY(Locks::mutator_lock_);
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std::vector<ClassLoadCallback*> class_callbacks_
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GUARDED_BY(Locks::mutator_lock_);
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std::vector<RuntimeSigQuitCallback*> sigquit_callbacks_
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GUARDED_BY(Locks::mutator_lock_);
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std::vector<RuntimePhaseCallback*> phase_callbacks_
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GUARDED_BY(Locks::mutator_lock_);
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std::vector<MethodCallback*> method_callbacks_
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GUARDED_BY(Locks::mutator_lock_);
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};
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} // namespace art
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#endif // ART_RUNTIME_RUNTIME_CALLBACKS_H_
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