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56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Assertions.h>
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#include <AK/Time.h>
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#include <LibCore/ElapsedTimer.h>
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#include <sys/time.h>
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#include <time.h>
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namespace Core {
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ElapsedTimer ElapsedTimer::start_new()
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{
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ElapsedTimer timer;
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timer.start();
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return timer;
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}
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void ElapsedTimer::start()
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{
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m_valid = true;
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timespec now_spec;
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clock_gettime(m_precise ? CLOCK_MONOTONIC : CLOCK_MONOTONIC_COARSE, &now_spec);
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m_origin_time.tv_sec = now_spec.tv_sec;
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m_origin_time.tv_usec = now_spec.tv_nsec / 1000;
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}
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void ElapsedTimer::reset()
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{
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m_valid = false;
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m_origin_time = { 0, 0 };
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}
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int ElapsedTimer::elapsed() const
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{
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VERIFY(is_valid());
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struct timeval now;
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timespec now_spec;
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clock_gettime(m_precise ? CLOCK_MONOTONIC : CLOCK_MONOTONIC_COARSE, &now_spec);
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now.tv_sec = now_spec.tv_sec;
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now.tv_usec = now_spec.tv_nsec / 1000;
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struct timeval diff;
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timeval_sub(now, m_origin_time, diff);
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return diff.tv_sec * 1000 + diff.tv_usec / 1000;
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}
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Time ElapsedTimer::elapsed_time() const
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{
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return Time::from_milliseconds(elapsed());
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}
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}
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