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Flag.h
1/*
2╔══════════════════════════════════════════════════════════════════════════════╗
3║ SIMPLY POWERFUL TOOLKIT (SPTK) ║
4╟──────────────────────────────────────────────────────────────────────────────╢
5║ copyright © 1999-2022 Alexey Parshin. All rights reserved. ║
6║ email alexeyp@gmail.com ║
7╚══════════════════════════════════════════════════════════════════════════════╝
8┌──────────────────────────────────────────────────────────────────────────────┐
9│ This library is free software; you can redistribute it and/or modify it │
10│ under the terms of the GNU Library General Public License as published by │
11│ the Free Software Foundation; either version 2 of the License, or (at your │
12│ option) any later version. │
13│ │
14│ This library is distributed in the hope that it will be useful, but │
15│ WITHOUT ANY WARRANTY; without even the implied warranty of │
16│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library │
17│ General Public License for more details. │
18│ │
19│ You should have received a copy of the GNU Library General Public License │
20│ along with this library; if not, write to the Free Software Foundation, │
21│ Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. │
22│ │
23│ Please report all bugs and problems to alexeyp@gmail.com. │
24└──────────────────────────────────────────────────────────────────────────────┘
25*/
26
27#pragma once
28
29#include <chrono>
30#include <condition_variable>
31#include <sptk5/DateTime.h>
32#include <sptk5/Exception.h>
33#include <sptk5/sptk.h>
34
35namespace sptk {
36
45class SP_EXPORT Flag
46{
47public:
54 explicit Flag(bool startingValue = false);
55
59 virtual ~Flag();
60
65 bool get() const;
66
71 void set(bool value);
72
76 operator bool() const
77 {
78 return get();
79 }
80
84 Flag& operator=(bool value)
85 {
86 set(value);
87 return *this;
88 }
89
96 bool wait_for(bool value, std::chrono::milliseconds timeout);
97
104 bool wait_until(bool value, DateTime timeout);
105
106private:
110 mutable std::mutex m_lockMutex;
111
115 std::condition_variable m_condition;
116
120 bool m_value {false};
121
125 size_t m_waiters {0};
126
130 bool m_terminated {false};
131
135 void terminate();
136
140 size_t waiters() const;
141};
145} // namespace sptk
Definition: DateTime.h:86
Definition: Flag.h:46
virtual ~Flag()
bool wait_until(bool value, DateTime timeout)
Flag(bool startingValue=false)
bool get() const
bool wait_for(bool value, std::chrono::milliseconds timeout)
Flag & operator=(bool value)
Definition: Flag.h:84
void set(bool value)

Fri Oct 14 2022 09:58:32: SPTK 5.4.1