44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
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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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//
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// UNSUPPORTED: libcpp-has-no-threads
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// UNSUPPORTED: c++98, c++03, c++11
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// This test requires the dylib support introduced in D68480
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// XFAIL: with_system_cxx_lib=macosx10.15
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// XFAIL: with_system_cxx_lib=macosx10.14
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// XFAIL: with_system_cxx_lib=macosx10.13
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// XFAIL: with_system_cxx_lib=macosx10.12
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// XFAIL: with_system_cxx_lib=macosx10.11
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// XFAIL: with_system_cxx_lib=macosx10.10
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// XFAIL: with_system_cxx_lib=macosx10.9
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// <semaphore>
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#include <semaphore>
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#include <thread>
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#include "test_macros.h"
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int main(int, char**)
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{
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std::counting_semaphore<> s(1);
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assert(s.try_acquire());
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s.release();
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assert(s.try_acquire());
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s.release(2);
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std::thread t([&](){
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assert(s.try_acquire());
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});
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t.join();
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assert(s.try_acquire());
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return 0;
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}
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