src/gallium/auxiliary/os/os_time.c

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  27
  28 /**
  29  * @file
  30  * OS independent time-manipulation functions.
  31  *
  32  * @author Jose Fonseca <jfonseca@vmware.com>
  33  */
  34
  35
  36 #include "pipe/p_config.h"
  37
  38 #if defined(PIPE_OS_UNIX)
  39 #  include <sys/time.h> /* timeval */
  40 #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
  41 #  include <windows.h>
  42 #else
  43 #  error Unsupported OS
  44 #endif
  45
  46 #include "os_time.h"
  47
  48
  49 int64_t
  50 os_time_get(void)
  51 {
  52 #if defined(PIPE_OS_UNIX)
  53
  54    struct timeval tv;
  55    gettimeofday(&tv, NULL);
  56    return tv.tv_usec + tv.tv_sec*1000000LL;
  57
  58 #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
  59
  60    static LARGE_INTEGER frequency;
  61    LARGE_INTEGER counter;
  62    if(!frequency.QuadPart)
  63       QueryPerformanceFrequency(&frequency);
  64    QueryPerformanceCounter(&counter);
  65    return counter.QuadPart*INT64_C(1000000)/frequency.QuadPart;
  66
  67 #endif
  68 }
  69
  70
  71 #if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
  72
  73 void
  74 os_time_sleep(int64_t usecs)
  75 {
  76    Sleep((usecs + 999) / 1000);
  77 }
  78
  79 #endif