1/*
2 * Copyright (C) 2016 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include <wtf/Seconds.h>
28
29#include <wtf/Condition.h>
30#include <wtf/Lock.h>
31#include <wtf/MonotonicTime.h>
32#include <wtf/PrintStream.h>
33#include <wtf/TimeWithDynamicClockType.h>
34#include <wtf/WallTime.h>
35
36namespace WTF {
37
38WallTime Seconds::operator+(WallTime other) const
39{
40 return other + *this;
41}
42
43MonotonicTime Seconds::operator+(MonotonicTime other) const
44{
45 return other + *this;
46}
47
48TimeWithDynamicClockType Seconds::operator+(const TimeWithDynamicClockType& other) const
49{
50 return other + *this;
51}
52
53WallTime Seconds::operator-(WallTime other) const
54{
55 return WallTime::fromRawSeconds(value() - other.secondsSinceEpoch().value());
56}
57
58MonotonicTime Seconds::operator-(MonotonicTime other) const
59{
60 return MonotonicTime::fromRawSeconds(value() - other.secondsSinceEpoch().value());
61}
62
63TimeWithDynamicClockType Seconds::operator-(const TimeWithDynamicClockType& other) const
64{
65 return other.withSameClockAndRawSeconds(value() - other.secondsSinceEpoch().value());
66}
67
68void Seconds::dump(PrintStream& out) const
69{
70 out.print(m_value, " sec");
71}
72
73void sleep(Seconds value)
74{
75 // It's very challenging to find portable ways of sleeping for less than a second. On UNIX, you want to
76 // use usleep() but it's hard to #include it in a portable way (you'd think it's in unistd.h, but then
77 // you'd be wrong on some OSX SDKs). Also, usleep() won't save you on Windows. Hence, bottoming out in
78 // lock code, which already solves the sleeping problem, is probably for the best.
79
80 Lock fakeLock;
81 Condition fakeCondition;
82 LockHolder fakeLocker(fakeLock);
83 fakeCondition.waitFor(fakeLock, value);
84}
85
86} // namespace WTF
87
88