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,
33                     int clock = SYSTEM_TIME_MONOTONIC,
34                     uint32_t flags = 0);
35         ~StopWatch();
36 
37         const char* name() const;
38         nsecs_t     lap();
39         nsecs_t     elapsedTime() const;
40 
41         void        reset();
42 
43 private:
44     const char*     mName;
45     int             mClock;
46     uint32_t        mFlags;
47 
48     struct lap_t {
49         nsecs_t     soFar;
50         nsecs_t     thisLap;
51     };
52 
53     nsecs_t         mStartTime;
54     lap_t           mLaps[8];
55     int             mNumLaps;
56 };
57 
58 
59 }; // namespace android
60 
61 
62 // ---------------------------------------------------------------------------
63 
64 #endif // ANDROID_STOPWATCH_H
65