blob: 67a25ed2f8a89a311098548bc4a0c9b5077af174 (
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
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___MUTEX_LOCK_GUARD_H
#define _LIBCPP___MUTEX_LOCK_GUARD_H
#include <__config>
#include <__mutex/tag_types.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Mutex>
class _LIBCPP_SCOPED_LOCKABLE lock_guard {
public:
typedef _Mutex mutex_type;
private:
mutex_type& __m_;
public:
[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI explicit lock_guard(mutex_type& __m) _LIBCPP_ACQUIRE_CAPABILITY(__m)
: __m_(__m) {
__m_.lock();
}
[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI lock_guard(mutex_type& __m, adopt_lock_t) _LIBCPP_REQUIRES_CAPABILITY(__m)
: __m_(__m) {}
_LIBCPP_RELEASE_CAPABILITY _LIBCPP_HIDE_FROM_ABI ~lock_guard() { __m_.unlock(); }
lock_guard(lock_guard const&) = delete;
lock_guard& operator=(lock_guard const&) = delete;
};
_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(lock_guard);
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___MUTEX_LOCK_GUARD_H
|
