1 /*
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #ifndef VPX_PORTS_VPX_TIMER_H_
12 #define VPX_PORTS_VPX_TIMER_H_
13
14 #include "./vpx_config.h"
15
16 #include "vpx/vpx_integer.h"
17
18 #if CONFIG_OS_SUPPORT
19
20 #if defined(_WIN32)
21 /*
22 * Win32 specific includes
23 */
24 #undef NOMINMAX
25 #define NOMINMAX
26 #ifndef WIN32_LEAN_AND_MEAN
27 #define WIN32_LEAN_AND_MEAN
28 #endif
29 #include <windows.h>
30 #else
31 /*
32 * POSIX specific includes
33 */
34 #include <sys/time.h>
35
36 /* timersub is not provided by msys at this time. */
37 #ifndef timersub
38 #define timersub(a, b, result) \
39 do { \
40 (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
41 (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
42 if ((result)->tv_usec < 0) { \
43 --(result)->tv_sec; \
44 (result)->tv_usec += 1000000; \
45 } \
46 } while (0)
47 #endif
48 #endif
49
50 struct vpx_usec_timer {
51 #if defined(_WIN32)
52 LARGE_INTEGER begin, end;
53 #else
54 struct timeval begin, end;
55 #endif
56 };
57
vpx_usec_timer_start(struct vpx_usec_timer * t)58 static INLINE void vpx_usec_timer_start(struct vpx_usec_timer *t) {
59 #if defined(_WIN32)
60 QueryPerformanceCounter(&t->begin);
61 #else
62 gettimeofday(&t->begin, NULL);
63 #endif
64 }
65
vpx_usec_timer_mark(struct vpx_usec_timer * t)66 static INLINE void vpx_usec_timer_mark(struct vpx_usec_timer *t) {
67 #if defined(_WIN32)
68 QueryPerformanceCounter(&t->end);
69 #else
70 gettimeofday(&t->end, NULL);
71 #endif
72 }
73
vpx_usec_timer_elapsed(struct vpx_usec_timer * t)74 static INLINE int64_t vpx_usec_timer_elapsed(struct vpx_usec_timer *t) {
75 #if defined(_WIN32)
76 LARGE_INTEGER freq, diff;
77
78 diff.QuadPart = t->end.QuadPart - t->begin.QuadPart;
79
80 QueryPerformanceFrequency(&freq);
81 return diff.QuadPart * 1000000 / freq.QuadPart;
82 #else
83 struct timeval diff;
84
85 timersub(&t->end, &t->begin, &diff);
86 return (int64_t)diff.tv_sec * 1000000 + diff.tv_usec;
87 #endif
88 }
89
90 #else /* CONFIG_OS_SUPPORT = 0*/
91
92 /* Empty timer functions if CONFIG_OS_SUPPORT = 0 */
93 #ifndef timersub
94 #define timersub(a, b, result)
95 #endif
96
97 struct vpx_usec_timer {
98 void *dummy;
99 };
100
vpx_usec_timer_start(struct vpx_usec_timer * t)101 static INLINE void vpx_usec_timer_start(struct vpx_usec_timer *t) {}
102
vpx_usec_timer_mark(struct vpx_usec_timer * t)103 static INLINE void vpx_usec_timer_mark(struct vpx_usec_timer *t) {}
104
vpx_usec_timer_elapsed(struct vpx_usec_timer * t)105 static INLINE int vpx_usec_timer_elapsed(struct vpx_usec_timer *t) { return 0; }
106
107 #endif /* CONFIG_OS_SUPPORT */
108
109 #endif // VPX_PORTS_VPX_TIMER_H_
110