1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// Define ~condition_variable.
10//
11// On some platforms ~condition_variable has been made trivial and the
12// definition is only provided for ABI compatibility.
13
14#include <__config>
15#include <__thread/support.h>
16
17#if _LIBCPP_ABI_VERSION == 1 || !_LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION
18# define NEEDS_CONDVAR_DESTRUCTOR
19#endif
20
21_LIBCPP_BEGIN_NAMESPACE_STD
22
23#ifdef NEEDS_CONDVAR_DESTRUCTOR
24
25class _LIBCPP_EXPORTED_FROM_ABI condition_variable {
26 __libcpp_condvar_t __cv_ = _LIBCPP_CONDVAR_INITIALIZER;
27
28public:
29 _LIBCPP_HIDE_FROM_ABI constexpr condition_variable() noexcept = default;
30
31 ~condition_variable();
32
33 condition_variable(const condition_variable&) = delete;
34 condition_variable& operator=(const condition_variable&) = delete;
35};
36
37condition_variable::~condition_variable() { __libcpp_condvar_destroy(cv: &__cv_); }
38#endif
39
40_LIBCPP_END_NAMESPACE_STD
41