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// Copyright (C) 2019 Google LLC
//
// 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 ICING_LEGACY_CORE_ICING_TIMER_H_
#define ICING_LEGACY_CORE_ICING_TIMER_H_
#include <sys/time.h>
#include <time.h>
namespace icing {
namespace lib {
// A simple stop-watch timer for performance measurement.
class IcingTimer {
public:
static double WallTimeNow();
IcingTimer();
void Reset();
// Elapsed wall time since last Reset().
double Elapsed() const;
private:
static double ClockTime();
double start_;
};
} // namespace lib
} // namespace icing
#endif // ICING_LEGACY_CORE_ICING_TIMER_H_
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