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/**************************************************************************
*
* Copyright 2008-2010 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* @file
* OS independent time-manipulation functions.
*
* @author Jose Fonseca <jfonseca@vmware.com>
*/
#include "pipe/p_config.h"
#if !defined(PIPE_OS_EMBEDDED)
#if defined(PIPE_OS_UNIX)
# include <sys/time.h> /* timeval */
#elif defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
# include <windows.h>
# include <winddi.h>
#elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
# include <windows.h>
extern VOID KeQuerySystemTime(PLARGE_INTEGER);
#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_SUBSYSTEM_WINDOWS_CE)
# include <windows.h>
#else
# error Unsupported OS
#endif
#include "os_time.h"
int64_t
os_time_get(void)
{
#if defined(PIPE_OS_UNIX)
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_usec + tv.tv_sec*1000000LL;
#elif defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
static LONGLONG frequency;
LONGLONG counter;
if(!frequency)
EngQueryPerformanceFrequency(&frequency);
EngQueryPerformanceCounter(&counter);
return counter*INT64_C(1000000)/frequency;
#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_SUBSYSTEM_WINDOWS_CE)
static LARGE_INTEGER frequency;
LARGE_INTEGER counter;
if(!frequency.QuadPart)
QueryPerformanceFrequency(&frequency);
QueryPerformanceCounter(&counter);
return counter.QuadPart*INT64_C(1000000)/frequency.QuadPart;
#elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
/* Updated every 10 miliseconds, measured in units of 100 nanoseconds.
* http://msdn.microsoft.com/en-us/library/ms801642.aspx */
LARGE_INTEGER counter;
KeQuerySystemTime(&counter);
return counter.QuadPart/10;
#endif
}
#if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
void
os_time_sleep(int64_t usecs)
{
static LONGLONG frequency;
LONGLONG start, curr, end;
EngQueryPerformanceCounter(&start);
if(!frequency)
EngQueryPerformanceFrequency(&frequency);
end = start + (usecs * frequency + 999999LL)/1000000LL;
do {
EngQueryPerformanceCounter(&curr);
} while(start <= curr && curr < end ||
end < start && (curr < end || start <= curr));
}
#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
void
os_time_sleep(int64_t usecs)
{
Sleep((usecs + 999) / 1000);
}
#endif
#endif /* !PIPE_OS_EMBEDDED */
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