95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/**************************************************************************
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*
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* Copyright 2008-2010 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* OS independent time-manipulation functions.
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*
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* @author Jose Fonseca <jfonseca@vmware.com>
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*/
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#include "pipe/p_config.h"
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#if defined(PIPE_OS_UNIX)
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# include <time.h> /* timeval */
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# include <sys/time.h> /* timeval */
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#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
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# include <windows.h>
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#else
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# error Unsupported OS
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#endif
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#include "os_time.h"
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int64_t
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os_time_get_nano(void)
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{
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#if defined(PIPE_OS_LINUX)
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struct timespec tv;
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clock_gettime(CLOCK_MONOTONIC, &tv);
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return tv.tv_nsec + tv.tv_sec*INT64_C(1000000000);
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#elif defined(PIPE_OS_UNIX)
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return tv.tv_usec*INT64_C(1000) + tv.tv_sec*INT64_C(1000000000);
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#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
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static LARGE_INTEGER frequency;
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LARGE_INTEGER counter;
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if(!frequency.QuadPart)
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QueryPerformanceFrequency(&frequency);
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QueryPerformanceCounter(&counter);
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return counter.QuadPart*INT64_C(1000000000)/frequency.QuadPart;
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#else
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#error Unsupported OS
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#endif
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}
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#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
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void
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os_time_sleep(int64_t usecs)
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{
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DWORD dwMilliseconds = (DWORD) ((usecs + 999) / 1000);
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/* Avoid Sleep(O) as that would cause to sleep for an undetermined duration */
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if (dwMilliseconds) {
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Sleep(dwMilliseconds);
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}
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}
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#endif
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