35 lines
844 B
C++
35 lines
844 B
C++
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//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <atomic>
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// struct atomic_flag
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// bool atomic_flag_test_and_set(volatile atomic_flag*);
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// bool atomic_flag_test_and_set(atomic_flag*);
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#include <atomic>
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#include <cassert>
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int main()
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{
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{
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std::atomic_flag f;
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f.clear();
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assert(atomic_flag_test_and_set(&f) == 0);
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assert(f.test_and_set() == 1);
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}
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{
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volatile std::atomic_flag f;
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f.clear();
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assert(atomic_flag_test_and_set(&f) == 0);
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assert(f.test_and_set() == 1);
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}
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}
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