cc/gapic/timer.h

/*
 * Copyright (C) 2015 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 GAPIC_TIMER_H
#define GAPIC_TIMER_H

#include <cstdint>

namespace gapic {

// Timer provides a timer that measures monotonic time between calls to Start() and Stop().
class Timer {
public:
    // Begin the timer.
    void Start();

    // Stop the timer and report the time in nanoseconds since Start was called.
    uint64_t Stop();

private:
  uint64_t mStartTime; // Units dependent on platform.
};

}  // namespace gapic

#endif  // GAPIC_TIMER_H