root/trunk/dep/src/zthread/macos/UpTimeStrategy.h @ 2

Revision 2, 2.1 kB (checked in by yumileroy, 17 years ago)

[svn] * Proper SVN structure

Original author: Neo2003
Date: 2008-10-02 16:23:55-05:00
Line 
1/*
2 * Copyright (c) 2005, Eric Crahen
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is furnished
9 * to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in all
12 * copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 *
21 */
22
23#ifndef __ZTTIMESTRATEGY_H__
24#define __ZTTIMESTRATEGY_H__
25
26#include <CoreServices/CoreServices.h>
27//#include <DriverServices.h>
28
29namespace ZThread {
30
31
32/**
33 * @class TimeStrategy
34 *
35 * Implement a strategy for time operatons based on UpTime
36 */
37class TimeStrategy {
38
39  unsigned long _ms;
40  unsigned long _s;
41
42 public:
43 
44  TimeStrategy() {
45
46    // Get the absolute time in milliseconds relative to the program startup
47    static AbsoluteTime sysUpTime(UpTime());
48    AbsoluteTime delta = AbsoluteDeltaToNanoseconds(UpTime(), sysUpTime);
49
50    uint64_t now = *reinterpret_cast<uint64_t*>(&delta) / 1000000;
51
52    _s = now / 1000;
53    _ms = now % 1000;
54
55  }
56 
57  inline unsigned long seconds() const {
58    return _s;
59  }
60
61  inline unsigned long milliseconds() const { 
62    return _ms;
63  }
64
65  unsigned long seconds(unsigned long s) {
66
67    unsigned long z = seconds();
68    _s = s;
69    return z;
70
71  }
72
73  unsigned long milliseconds(unsigned long ms) {
74
75    unsigned long z = milliseconds();
76    _ms = ms;
77
78    return z;
79
80  }
81
82};
83
84};
85
86#endif // __ZTTIMESTRATEGY_H__
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