Timer.h revision af222500aa2ce2b18149277e561cdf75f2115df2 
1//
2//  Timer.h
3//  PerfTestDriver
4//
5//  Created by Enrico Granata on 3/6/13.
6//  Copyright (c) 2013 Apple Inc. All rights reserved.
7//
8
9#ifndef __PerfTestDriver__Timer__
10#define __PerfTestDriver__Timer__
11
12#include "Gauge.h"
13
14#include <chrono>
15
16using namespace std::chrono;
17
18namespace lldb_perf
19{
20class TimeGauge : public Gauge<double>
21{
22private:
23    enum class State
24    {
25        eTSNeverUsed,
26        eTSCounting,
27        eTSStopped
28    };
29
30    typedef high_resolution_clock::time_point HPTime;
31    HPTime m_start;
32    double m_value;
33    State m_state;
34
35    HPTime
36    now ();
37
38public:
39    TimeGauge ();
40
41    virtual
42    ~TimeGauge ()
43    {}
44
45    void
46    start ();
47
48    double
49    stop ();
50
51    double
52    value ();
53};
54}
55
56#endif /* defined(__PerfTestDriver__Timer__) */
57