blob: 0ac6185ba456b8b06a28467f3a5e95d8bd8f44c4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/**
* \file
* \brief OnceFlag class header
*
* \author Copyright (C) 2015 Kamil Szczygiel http://www.distortec.com http://www.freddiechopin.info
*
* \par License
* This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not
* distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#ifndef INCLUDE_DISTORTOS_ONCEFLAG_HPP_
#define INCLUDE_DISTORTOS_ONCEFLAG_HPP_
#include "distortos/internal/synchronization/CallOnceControlBlock.hpp"
#if DISTORTOS_CALLONCE_SUPPORTED == 1 || DOXYGEN == 1
namespace distortos
{
/**
* \brief OnceFlag is a helper class for callOnce().
*
* Similar to std::once_flag - http://en.cppreference.com/w/cpp/thread/once_flag
* Similar to POSIX pthread_once_t - http://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_once.html#
*
* \note This class requires GCC 4.9.
*
* \ingroup synchronization
*/
class OnceFlag
{
template<typename Function, typename... Args>
friend void callOnce(OnceFlag& onceFlag, Function&& function, Args&&... args);
public:
/**
* \brief OnceFlag's constructor
*/
constexpr OnceFlag() :
callOnceControlBlock_{}
{
}
private:
/// internal internal::CallOnceControlBlock object used by callOnce()
internal::CallOnceControlBlock callOnceControlBlock_;
};
} // namespace distortos
#endif // DISTORTOS_CALLONCE_SUPPORTED == 1 || DOXYGEN == 1
#endif // INCLUDE_DISTORTOS_ONCEFLAG_HPP_
|
