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5d4439cc3e
release/17.x branch, commit 8f4dd44097c9ae25dd203d5ac87f3b48f854bba8 This adds the flag `-D_LIBCPP_PSTL_CPU_BACKEND_SERIAL`. A future enhancement could possibly pass something different if there is a compelling parallel implementation. That libdispatch one might be worth looking into.
47 lines
1.3 KiB
C++
Vendored
47 lines
1.3 KiB
C++
Vendored
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// Define ~condition_variable.
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//
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// On some platforms ~condition_variable has been made trivial and the
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// definition is only provided for ABI compatibility.
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#include <__config>
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#include <__threading_support>
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#if !defined(_LIBCPP_HAS_NO_THREADS)
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# if _LIBCPP_ABI_VERSION == 1 || !defined(_LIBCPP_HAS_TRIVIAL_CONDVAR_DESTRUCTION)
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# define NEEDS_CONDVAR_DESTRUCTOR
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# endif
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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#ifdef NEEDS_CONDVAR_DESTRUCTOR
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class _LIBCPP_EXPORTED_FROM_ABI condition_variable
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{
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__libcpp_condvar_t __cv_ = _LIBCPP_CONDVAR_INITIALIZER;
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public:
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_LIBCPP_INLINE_VISIBILITY
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constexpr condition_variable() noexcept = default;
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~condition_variable();
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condition_variable(const condition_variable&) = delete;
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condition_variable& operator=(const condition_variable&) = delete;
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};
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condition_variable::~condition_variable()
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{
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__libcpp_condvar_destroy(&__cv_);
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}
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#endif
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_LIBCPP_END_NAMESPACE_STD
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