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 #ifndef ANDROID_STOPWATCH_H
18 #define ANDROID_STOPWATCH_H
19 
20 #include <stdint.h>
21 #include <sys/types.h>
22 
23 #include <utils/Timers.h>
24 
25 // ---------------------------------------------------------------------------
26 
27 namespace android {
28 
29 class StopWatch
30 {
31 public:
32   StopWatch(const char* name, int clock = SYSTEM_TIME_MONOTONIC);
33   ~StopWatch();
34 
35   const char* name() const;
36   nsecs_t lap();
37   nsecs_t elapsedTime() const;
38 
39   void reset();
40 
41 private:
42     const char*     mName;
43     int             mClock;
44 
45     struct lap_t {
46         nsecs_t     soFar;
47         nsecs_t     thisLap;
48     };
49 
50     nsecs_t         mStartTime;
51     lap_t           mLaps[8];
52     int             mNumLaps;
53 };
54 
55 }  // namespace android
56 
57 // ---------------------------------------------------------------------------
58 
59 #endif // ANDROID_STOPWATCH_H
60