Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  1. /**************************************************************************
  2.  *
  3.  * Copyright 2008-2010 VMware, Inc.
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21.  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  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 <time.h> /* timeval */
  40. #  include <sys/time.h> /* timeval */
  41. #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
  42. #  include <windows.h>
  43. #else
  44. #  error Unsupported OS
  45. #endif
  46.  
  47. #include "os_time.h"
  48.  
  49.  
  50. int64_t
  51. os_time_get_nano(void)
  52. {
  53. #if defined(PIPE_OS_LINUX)
  54.  
  55.    struct timespec tv;
  56.    clock_gettime(CLOCK_MONOTONIC, &tv);
  57.    return tv.tv_nsec + tv.tv_sec*INT64_C(1000000000);
  58.  
  59. #elif defined(PIPE_OS_UNIX)
  60.  
  61.    struct timeval tv;
  62.    gettimeofday(&tv, NULL);
  63.    return tv.tv_usec*INT64_C(1000) + tv.tv_sec*INT64_C(1000000000);
  64.  
  65. #elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
  66.  
  67.    static LARGE_INTEGER frequency;
  68.    LARGE_INTEGER counter;
  69.    if(!frequency.QuadPart)
  70.       QueryPerformanceFrequency(&frequency);
  71.    QueryPerformanceCounter(&counter);
  72.    return counter.QuadPart*INT64_C(1000000000)/frequency.QuadPart;
  73.  
  74. #else
  75.  
  76. #error Unsupported OS
  77.  
  78. #endif
  79. }
  80.  
  81.  
  82. #if defined(PIPE_SUBSYSTEM_WINDOWS_USER)
  83.  
  84. void
  85. os_time_sleep(int64_t usecs)
  86. {
  87.    DWORD dwMilliseconds = (DWORD) ((usecs + 999) / 1000);
  88.    /* Avoid Sleep(O) as that would cause to sleep for an undetermined duration */
  89.    if (dwMilliseconds) {
  90.       Sleep(dwMilliseconds);
  91.    }
  92. }
  93.  
  94. #endif
  95.