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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