77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
/*
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* Copyright (C) 2013 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 ANDROID_HWUI_TASK_PROCESSOR_H
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#define ANDROID_HWUI_TASK_PROCESSOR_H
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#include <utils/RefBase.h>
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#include "Task.h"
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#include "TaskManager.h"
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namespace android {
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namespace uirenderer {
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class TaskProcessorBase: public RefBase {
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public:
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TaskProcessorBase() { }
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virtual ~TaskProcessorBase() { };
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virtual void process(const sp<TaskBase>& task) = 0;
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};
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template<typename T>
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class TaskProcessor: public TaskProcessorBase {
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public:
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TaskProcessor(TaskManager* manager): mManager(manager) { }
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virtual ~TaskProcessor() { }
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void add(const sp<Task<T> >& task) {
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if (!addImpl(task)) {
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// fall back to immediate execution
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process(task);
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}
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}
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virtual void onProcess(const sp<Task<T> >& task) = 0;
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private:
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bool addImpl(const sp<Task<T> >& task);
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virtual void process(const sp<TaskBase>& task) override {
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sp<Task<T> > realTask = static_cast<Task<T>* >(task.get());
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// This is the right way to do it but sp<> doesn't play nice
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// sp<Task<T> > realTask = static_cast<sp<Task<T> > >(task);
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onProcess(realTask);
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}
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TaskManager* mManager;
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};
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template<typename T>
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bool TaskProcessor<T>::addImpl(const sp<Task<T> >& task) {
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if (mManager) {
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sp<TaskProcessor<T> > self(this);
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return mManager->addTask(task, self);
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}
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return false;
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}
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}; // namespace uirenderer
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}; // namespace android
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#endif // ANDROID_HWUI_TASK_PROCESSOR_H
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