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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// UNSUPPORTED: libcpp-has-no-threads
// <atomic>
// struct atomic_flag
// void atomic_flag_clear_explicit(volatile atomic_flag*, memory_order);
// void atomic_flag_clear_explicit(atomic_flag*, memory_order);
#include <atomic>
#include <cassert>
int main()
{
{
std::atomic_flag f(false);
f.test_and_set();
atomic_flag_clear_explicit(&f, std::memory_order_relaxed);
assert(f.test_and_set() == 0);
}
{
std::atomic_flag f(false);
f.test_and_set();
atomic_flag_clear_explicit(&f, std::memory_order_release);
assert(f.test_and_set() == 0);
}
{
std::atomic_flag f(false);
f.test_and_set();
atomic_flag_clear_explicit(&f, std::memory_order_seq_cst);
assert(f.test_and_set() == 0);
}
{
volatile std::atomic_flag f(false);
f.test_and_set();
atomic_flag_clear_explicit(&f, std::memory_order_relaxed);
assert(f.test_and_set() == 0);
}
{
volatile std::atomic_flag f(false);
f.test_and_set();
atomic_flag_clear_explicit(&f, std::memory_order_release);
assert(f.test_and_set() == 0);
}
{
volatile std::atomic_flag f(false);
f.test_and_set();
atomic_flag_clear_explicit(&f, std::memory_order_seq_cst);
assert(f.test_and_set() == 0);
}
}
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