SkTime.h revision 2b12376849c10df26cb6ecade2475460282f6a3f 
1
2/*
3 * Copyright 2006 The Android Open Source Project
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9
10#ifndef SkTime_DEFINED
11#define SkTime_DEFINED
12
13#include "SkTypes.h"
14
15class SkString;
16
17/** \class SkTime
18    Platform-implemented utilities to return time of day, and millisecond counter.
19*/
20class SkTime {
21public:
22    struct DateTime {
23        int16_t  fTimeZoneMinutes;  // The number of minutes that GetDateTime()
24                                    // is ahead of or behind UTC.
25        uint16_t fYear;          //!< e.g. 2005
26        uint8_t  fMonth;         //!< 1..12
27        uint8_t  fDayOfWeek;     //!< 0..6, 0==Sunday
28        uint8_t  fDay;           //!< 1..31
29        uint8_t  fHour;          //!< 0..23
30        uint8_t  fMinute;        //!< 0..59
31        uint8_t  fSecond;        //!< 0..59
32
33        void toISO8601(SkString* dst) const;
34    };
35    static void GetDateTime(DateTime*);
36
37    static SkMSec GetMSecs() { return (SkMSec)(GetNSecs() * 1e-6); }
38    static double GetNSecs();
39};
40
41#define SK_TIME_FACTOR      1
42
43///////////////////////////////////////////////////////////////////////////////
44
45class SkAutoTime {
46public:
47    // The label is not deep-copied, so its address must remain valid for the
48    // lifetime of this object
49    SkAutoTime(const char* label = NULL, SkMSec minToDump = 0) : fLabel(label)
50    {
51        fNow = SkTime::GetMSecs();
52        fMinToDump = minToDump;
53    }
54    ~SkAutoTime()
55    {
56        SkMSec dur = SkTime::GetMSecs() - fNow;
57        if (dur >= fMinToDump) {
58            SkDebugf("%s %d\n", fLabel ? fLabel : "", dur);
59        }
60    }
61private:
62    const char* fLabel;
63    SkMSec      fNow;
64    SkMSec      fMinToDump;
65};
66#define SkAutoTime(...) SK_REQUIRE_LOCAL_VAR(SkAutoTime)
67
68#endif
69