| /* |
| * Copyright (C) 2013 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 ANDROID_HWUI_TASK_MANAGER_H |
| #define ANDROID_HWUI_TASK_MANAGER_H |
| |
| #include <utils/Mutex.h> |
| #include <utils/String8.h> |
| #include <utils/Thread.h> |
| #include <utils/Vector.h> |
| |
| #include "Signal.h" |
| |
| namespace android { |
| namespace uirenderer { |
| |
| template <typename T> |
| class Task; |
| class TaskBase; |
| |
| template <typename T> |
| class TaskProcessor; |
| class TaskProcessorBase; |
| |
| class TaskManager { |
| public: |
| TaskManager(); |
| ~TaskManager(); |
| |
| /** |
| * Returns true if this task manager can run tasks, |
| * false otherwise. This method will typically return |
| * false on a single CPU core device. |
| */ |
| bool canRunTasks() const; |
| |
| /** |
| * Stops all allocated threads. Adding tasks will start |
| * the threads again as necessary. |
| */ |
| void stop(); |
| |
| private: |
| template <typename T> |
| friend class TaskProcessor; |
| |
| template<typename T> |
| bool addTask(const sp<Task<T> >& task, const sp<TaskProcessor<T> >& processor) { |
| return addTaskBase(sp<TaskBase>(task), sp<TaskProcessorBase>(processor)); |
| } |
| |
| bool addTaskBase(const sp<TaskBase>& task, const sp<TaskProcessorBase>& processor); |
| |
| struct TaskWrapper { |
| TaskWrapper(): mTask(), mProcessor() { } |
| |
| TaskWrapper(const sp<TaskBase>& task, const sp<TaskProcessorBase>& processor): |
| mTask(task), mProcessor(processor) { |
| } |
| |
| sp<TaskBase> mTask; |
| sp<TaskProcessorBase> mProcessor; |
| }; |
| |
| class WorkerThread: public Thread { |
| public: |
| explicit WorkerThread(const String8 name): mSignal(Condition::WAKE_UP_ONE), mName(name) { } |
| |
| bool addTask(TaskWrapper task); |
| size_t getTaskCount() const; |
| void exit(); |
| |
| private: |
| virtual status_t readyToRun() override; |
| virtual bool threadLoop() override; |
| |
| // Lock for the list of tasks |
| mutable Mutex mLock; |
| Vector<TaskWrapper> mTasks; |
| |
| // Signal used to wake up the thread when a new |
| // task is available in the list |
| mutable Signal mSignal; |
| |
| const String8 mName; |
| }; |
| |
| Vector<sp<WorkerThread> > mThreads; |
| }; |
| |
| }; // namespace uirenderer |
| }; // namespace android |
| |
| #endif // ANDROID_HWUI_TASK_MANAGER_H |