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 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 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 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 }; 100 101 static INLINE void vpx_usec_timer_start(struct vpx_usec_timer *t) {} 102 103 static INLINE void vpx_usec_timer_mark(struct vpx_usec_timer *t) {} 104 105 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