src/gallium/auxiliary/os/os_time.c

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 * All Rights Reserved.
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 * permit persons to whom the Software is furnished to do so, subject to
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 *
 * The above copyright notice and this permission notice (including the
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 * of the Software.
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/**
 * @file
 * OS independent time-manipulation functions.
 * 
 * @author Jose Fonseca <jfonseca@vmware.com>
 */


#include "pipe/p_config.h"

#if defined(PIPE_OS_UNIX)
#  include <sys/time.h> /* timeval */
#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
#  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_USER)

   static LARGE_INTEGER frequency;
   LARGE_INTEGER counter;
   if(!frequency.QuadPart)
      QueryPerformanceFrequency(&frequency);
   QueryPerformanceCounter(&counter);
   return counter.QuadPart*INT64_C(1000000)/frequency.QuadPart;

#endif
}


#if defined(PIPE_SUBSYSTEM_WINDOWS_USER)

void
os_time_sleep(int64_t usecs)
{
   Sleep((usecs + 999) / 1000);
}

#endif