4684ddb6aa
- import libcxx - reduce targets to the one when compiled as a tools Change-Id: Iabb8427f80ff8e89463559a28bcb8b4f2bdbc496
34 lines
859 B
C++
34 lines
859 B
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <atomic>
|
|
|
|
// struct atomic_flag
|
|
|
|
// bool atomic_flag_test_and_set(volatile atomic_flag*);
|
|
// bool atomic_flag_test_and_set(atomic_flag*);
|
|
|
|
#include <atomic>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
{
|
|
std::atomic_flag f;
|
|
f.clear();
|
|
assert(atomic_flag_test_and_set(&f) == 0);
|
|
assert(f.test_and_set() == 1);
|
|
}
|
|
{
|
|
volatile std::atomic_flag f;
|
|
f.clear();
|
|
assert(atomic_flag_test_and_set(&f) == 0);
|
|
assert(f.test_and_set() == 1);
|
|
}
|
|
}
|