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24 lines
859 B
24 lines
859 B
/* 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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