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comparison: media/omx-plugin/include/froyo/utils/Timers.h
media/omx-plugin/include/froyo/utils/Timers.h
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| -1:000000000000 | 0:b696b56021d2 |
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| 1 /* | |
| 2 * Copyright (C) 2005 The Android Open Source Project | |
| 3 * | |
| 4 * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 5 * you may not use this file except in compliance with the License. | |
| 6 * You may obtain a copy of the License at | |
| 7 * | |
| 8 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 9 * | |
| 10 * Unless required by applicable law or agreed to in writing, software | |
| 11 * distributed under the License is distributed on an "AS IS" BASIS, | |
| 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 13 * See the License for the specific language governing permissions and | |
| 14 * limitations under the License. | |
| 15 */ | |
| 16 | |
| 17 // | |
| 18 // Timer functions. | |
| 19 // | |
| 20 #ifndef _LIBS_UTILS_TIMERS_H | |
| 21 #define _LIBS_UTILS_TIMERS_H | |
| 22 | |
| 23 #include <stdint.h> | |
| 24 #include <sys/types.h> | |
| 25 #include <sys/time.h> | |
| 26 | |
| 27 // ------------------------------------------------------------------ | |
| 28 // C API | |
| 29 | |
| 30 #ifdef __cplusplus | |
| 31 extern "C" { | |
| 32 #endif | |
| 33 | |
| 34 typedef int64_t nsecs_t; // nano-seconds | |
| 35 | |
| 36 static inline nsecs_t seconds_to_nanoseconds(nsecs_t secs) | |
| 37 { | |
| 38 return secs*1000000000; | |
| 39 } | |
| 40 | |
| 41 static inline nsecs_t milliseconds_to_nanoseconds(nsecs_t secs) | |
| 42 { | |
| 43 return secs*1000000; | |
| 44 } | |
| 45 | |
| 46 static inline nsecs_t microseconds_to_nanoseconds(nsecs_t secs) | |
| 47 { | |
| 48 return secs*1000; | |
| 49 } | |
| 50 | |
| 51 static inline nsecs_t nanoseconds_to_seconds(nsecs_t secs) | |
| 52 { | |
| 53 return secs/1000000000; | |
| 54 } | |
| 55 | |
| 56 static inline nsecs_t nanoseconds_to_milliseconds(nsecs_t secs) | |
| 57 { | |
| 58 return secs/1000000; | |
| 59 } | |
| 60 | |
| 61 static inline nsecs_t nanoseconds_to_microseconds(nsecs_t secs) | |
| 62 { | |
| 63 return secs/1000; | |
| 64 } | |
| 65 | |
| 66 static inline nsecs_t s2ns(nsecs_t v) {return seconds_to_nanoseconds(v);} | |
| 67 static inline nsecs_t ms2ns(nsecs_t v) {return milliseconds_to_nanoseconds(v);} | |
| 68 static inline nsecs_t us2ns(nsecs_t v) {return microseconds_to_nanoseconds(v);} | |
| 69 static inline nsecs_t ns2s(nsecs_t v) {return nanoseconds_to_seconds(v);} | |
| 70 static inline nsecs_t ns2ms(nsecs_t v) {return nanoseconds_to_milliseconds(v);} | |
| 71 static inline nsecs_t ns2us(nsecs_t v) {return nanoseconds_to_microseconds(v);} | |
| 72 | |
| 73 static inline nsecs_t seconds(nsecs_t v) { return s2ns(v); } | |
| 74 static inline nsecs_t milliseconds(nsecs_t v) { return ms2ns(v); } | |
| 75 static inline nsecs_t microseconds(nsecs_t v) { return us2ns(v); } | |
| 76 | |
| 77 enum { | |
| 78 SYSTEM_TIME_REALTIME = 0, // system-wide realtime clock | |
| 79 SYSTEM_TIME_MONOTONIC = 1, // monotonic time since unspecified starting point | |
| 80 SYSTEM_TIME_PROCESS = 2, // high-resolution per-process clock | |
| 81 SYSTEM_TIME_THREAD = 3 // high-resolution per-thread clock | |
| 82 }; | |
| 83 | |
| 84 // return the system-time according to the specified clock | |
| 85 #ifdef __cplusplus | |
| 86 nsecs_t systemTime(int clock = SYSTEM_TIME_MONOTONIC); | |
| 87 #else | |
| 88 nsecs_t systemTime(int clock); | |
| 89 #endif // def __cplusplus | |
| 90 | |
| 91 #ifdef __cplusplus | |
| 92 } // extern "C" | |
| 93 #endif | |
| 94 | |
| 95 // ------------------------------------------------------------------ | |
| 96 // C++ API | |
| 97 | |
| 98 #ifdef __cplusplus | |
| 99 | |
| 100 namespace android { | |
| 101 /* | |
| 102 * Time the duration of something. | |
| 103 * | |
| 104 * Includes some timeval manipulation functions. | |
| 105 */ | |
| 106 class DurationTimer { | |
| 107 public: | |
| 108 DurationTimer() {} | |
| 109 ~DurationTimer() {} | |
| 110 | |
| 111 // Start the timer. | |
| 112 void start(); | |
| 113 // Stop the timer. | |
| 114 void stop(); | |
| 115 // Get the duration in microseconds. | |
| 116 long long durationUsecs() const; | |
| 117 | |
| 118 // Subtract two timevals. Returns the difference (ptv1-ptv2) in | |
| 119 // microseconds. | |
| 120 static long long subtractTimevals(const struct timeval* ptv1, | |
| 121 const struct timeval* ptv2); | |
| 122 | |
| 123 // Add the specified amount of time to the timeval. | |
| 124 static void addToTimeval(struct timeval* ptv, long usec); | |
| 125 | |
| 126 private: | |
| 127 struct timeval mStartWhen; | |
| 128 struct timeval mStopWhen; | |
| 129 }; | |
| 130 | |
| 131 }; // android | |
| 132 #endif // def __cplusplus | |
| 133 | |
| 134 #endif // _LIBS_UTILS_TIMERS_H |
