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