25 lines
780 B
C
25 lines
780 B
C
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/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "timer_utils.h"
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void StartTimer(ClockTimerState* ct) {
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clock_gettime(CLOCK_REALTIME, &ct->start_time);
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}
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void StopTimer(ClockTimerState* ct) {
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clock_gettime(CLOCK_REALTIME, &ct->end_time);
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}
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uint32_t GetDurationMsecs(ClockTimerState* ct) {
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uint64_t start = ((uint64_t) ct->start_time.tv_sec * 1000000000 +
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(uint64_t) ct->start_time.tv_nsec);
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uint64_t end = ((uint64_t) ct->end_time.tv_sec * 1000000000 +
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(uint64_t) ct->end_time.tv_nsec);
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uint64_t duration_msecs = (end - start) / 1000000U; /* Nanoseconds ->
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* Milliseconds. */
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return (uint32_t) duration_msecs;
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}
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