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.
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