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
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23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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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
49int64_t
50os_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
73void
74os_time_sleep(int64_t usecs)
75{
76   Sleep((usecs + 999) / 1000);
77}
78
79#endif
80