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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 <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
os_time_get(void)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
os_time_sleep(int64_t usecs)74  os_time_sleep(int64_t usecs)
75  {
76     Sleep((usecs + 999) / 1000);
77  }
78  
79  #endif
80