services/surfaceflinger/DisplayHardware/VSyncBarrier.h

/*
 * Copyright (C) 2011 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_SURFACE_FLINGER_VSYNCBARRIER_H_
#define ANDROID_SURFACE_FLINGER_VSYNCBARRIER_H_

#include <stdint.h>
#include <sys/types.h>

#include <utils/Errors.h>
#include <utils/Timers.h>

namespace android {
// ---------------------------------------------------------------------------

class VSyncBarrier {
    int mFd;
public:
    VSyncBarrier();
    ~VSyncBarrier();
    status_t initCheck() const;
    status_t wait(nsecs_t* timestamp) const;
};

// ---------------------------------------------------------------------------
}; // namespace android

#endif /* ANDROID_SURFACE_FLINGER_VSYNCBARRIER_H_ */