diff options
Diffstat (limited to 'libs/hwui/thread/TaskManager.h')
-rw-r--r-- | libs/hwui/thread/TaskManager.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/libs/hwui/thread/TaskManager.h b/libs/hwui/thread/TaskManager.h new file mode 100644 index 0000000..bc86062 --- /dev/null +++ b/libs/hwui/thread/TaskManager.h @@ -0,0 +1,100 @@ +/* + * 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 + * true on a single CPU core device. + */ + bool canRunTasks() const; + +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: + WorkerThread(const String8 name): mSignal(Condition::WAKE_UP_ONE), mName(name) { } + + bool addTask(TaskWrapper task); + size_t getTaskCount() const; + void exit(); + + private: + virtual bool threadLoop(); + + // 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 |