libs/hwui/thread/Task.h

/*
 * 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_H
#define ANDROID_HWUI_TASK_H

#include <utils/RefBase.h>
#include <utils/Trace.h>

#include "Future.h"

namespace android {
namespace uirenderer {

class TaskBase: public RefBase {
public:
    TaskBase() { }
    virtual ~TaskBase() { }
};

template<typename T>
class Task: public TaskBase {
public:
    Task(): mFuture(new Future<T>()) { }
    virtual ~Task() { }

    T getResult() const {
        ScopedTrace tracer(ATRACE_TAG_VIEW, "waitForTask");
        return mFuture->get();
    }

    void setResult(T result) {
        mFuture->produce(result);
    }

protected:
    const sp<Future<T> >& future() const {
        return mFuture;
    }

private:
    sp<Future<T> > mFuture;
};

}; // namespace uirenderer
}; // namespace android

#endif // ANDROID_HWUI_TASK_H