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// Copyright (C) 2015-2017 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#ifndef STOP_WATCH_H_
#define STOP_WATCH_H_
#include <cstdint>
class stop_watch
{
public:
typedef uint64_t usec_t;
stop_watch() :
started_(false),
start_time_point_(0),
total_elapsed_(0)
{
}
inline void reset()
{
started_ = false;
total_elapsed_ = 0;
}
inline void start()
{
start_time_point_ = now();
started_ = true;
}
inline void stop()
{
total_elapsed_ += get_elapsed();
started_ = false;
}
usec_t get_total_elapsed_microseconds() const;
usec_t get_total_elapsed_seconds() const;
private:
inline usec_t get_elapsed() const
{
return now() - start_time_point_;
}
static usec_t now();
bool started_;
usec_t start_time_point_;
usec_t total_elapsed_;
};
#endif // STOP_WATCH_H_
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