96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*
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* Copyright (C) 2003-2012 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "clock.h"
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#ifdef WIN32
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#include <windows.h>
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#elif defined(__APPLE__)
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#include <mach/mach_time.h>
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#else
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#include <time.h>
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#endif
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unsigned
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monotonic_clock_ms(void)
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{
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#ifdef WIN32
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return GetTickCount();
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#elif defined(__APPLE__) /* OS X does not define CLOCK_MONOTONIC */
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static mach_timebase_info_data_t base;
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if (base.denom == 0)
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(void)mach_timebase_info(&base);
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return (unsigned)((mach_absolute_time() * base.numer)
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/ (1000000 * base.denom));
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#elif defined(CLOCK_MONOTONIC)
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
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#else
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/* we have no monotonic clock, fall back to gettimeofday() */
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struct timeval tv;
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gettimeofday(&tv, 0);
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return tv.tv_sec * 1000 + tv.tv_usec / 1000;
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#endif
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}
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uint64_t
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monotonic_clock_us(void)
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{
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#ifdef WIN32
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LARGE_INTEGER l_value, l_frequency;
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if (!QueryPerformanceCounter(&l_value) ||
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!QueryPerformanceFrequency(&l_frequency))
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return 0;
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uint64_t value = l_value.QuadPart;
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uint64_t frequency = l_frequency.QuadPart;
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if (frequency > 1000000) {
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value *= 10000;
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value /= frequency / 100;
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} else if (frequency < 1000000) {
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value *= 10000;
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value /= frequency;
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value *= 100;
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}
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return value;
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#elif defined(__APPLE__) /* OS X does not define CLOCK_MONOTONIC */
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static mach_timebase_info_data_t base;
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if (base.denom == 0)
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(void)mach_timebase_info(&base);
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return ((uint64_t)mach_absolute_time() * (uint64_t)base.numer)
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/ (1000 * (uint64_t)base.denom);
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#elif defined(CLOCK_MONOTONIC)
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return (uint64_t)ts.tv_sec * 1000000 + (uint64_t)(ts.tv_nsec / 1000);
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#else
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/* we have no monotonic clock, fall back to gettimeofday() */
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struct timeval tv;
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gettimeofday(&tv, 0);
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return (uint64_t)tv.tv_sec * 1000 + (uint64_t)(tv.tv_usec) / 1000(;
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#endif
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}
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