1 /*!
2 * \copy
3 * Copyright (c) 2009-2013, Cisco Systems
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 *
32 * \file measure_time.h
33 *
34 * \brief time cost measure utilization
35 *
36 * \date 04/28/2009 Created
37 *
38 *************************************************************************************
39 */
40 #ifndef WELS_TIME_COST_MEASURE_UTIL_H__
41 #define WELS_TIME_COST_MEASURE_UTIL_H__
42
43 #include <stdlib.h>
44
45 #include "typedefs.h"
46 #ifndef _WIN32
47 #include <sys/time.h>
48 #else
49 #include <windows.h>
50 #endif
51 #include <time.h>
52
53 #ifdef __cplusplus
54 extern "C" {
55 #endif//__cplusplus
56
57 /*!
58 * \brief time cost measure utilization
59 * \param void
60 * \return time elapsed since run (unit: microsecond)
61 */
62
WelsTime(void)63 static inline int64_t WelsTime (void) {
64 #ifndef _WIN32
65 struct timeval tv_date;
66
67 gettimeofday (&tv_date, NULL);
68 return ((int64_t) tv_date.tv_sec * 1000000 + (int64_t) tv_date.tv_usec);
69 #else
70 static int64_t iMtimeFreq = 0;
71 int64_t iMtimeCur = 0;
72 int64_t iResult = 0;
73 if (!iMtimeFreq) {
74 QueryPerformanceFrequency ((LARGE_INTEGER*)&iMtimeFreq);
75 if (!iMtimeFreq)
76 iMtimeFreq = 1;
77 }
78 QueryPerformanceCounter ((LARGE_INTEGER*)&iMtimeCur);
79 iResult = (int64_t) ((double)iMtimeCur * 1e6 / (double)iMtimeFreq + 0.5);
80 return iResult;
81 #endif//_WIN32
82 }
83
84 #ifdef __cplusplus
85 }
86 #endif
87
88 #endif//WELS_TIME_COST_MEASURE_UTIL_H__
89