179101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant//===----------------------------------------------------------------------===// 279101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant// 379101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant// The LLVM Compiler Infrastructure 479101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant// 5b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// This file is dual licensed under the MIT and the University of Illinois Open 6b64f8b07c104c6cc986570ac8ee0ed16a9f23976Howard Hinnant// Source Licenses. See LICENSE.TXT for details. 779101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant// 879101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant//===----------------------------------------------------------------------===// 97112dae6acac544a0271a85d95342c583441e2d1Dan Albert// 107112dae6acac544a0271a85d95342c583441e2d1Dan Albert// UNSUPPORTED: libcpp-has-no-threads 1179101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant 1279101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant// <atomic> 1379101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant 1479101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant// struct atomic_flag 1579101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant 1679101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant// bool atomic_flag_test_and_set_explicit(volatile atomic_flag*, memory_order); 1779101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant// bool atomic_flag_test_and_set_explicit(atomic_flag*, memory_order); 1879101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant 1979101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant#include <atomic> 2079101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant#include <cassert> 2179101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant 2279101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnantint main() 2379101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant{ 2479101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 2579101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant std::atomic_flag f; 2679101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 2779101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_relaxed) == 0); 2879101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 2979101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 3079101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 3179101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant std::atomic_flag f; 3279101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 3379101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_consume) == 0); 3479101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 3579101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 3679101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 3779101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant std::atomic_flag f; 3879101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 3979101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_acquire) == 0); 4079101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 4179101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 4279101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 4379101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant std::atomic_flag f; 4479101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 4579101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_release) == 0); 4679101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 4779101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 4879101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 4979101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant std::atomic_flag f; 5079101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 5179101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_acq_rel) == 0); 5279101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 5379101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 5479101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 5579101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant std::atomic_flag f; 5679101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 5779101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_seq_cst) == 0); 5879101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 5979101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 6079101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 6179101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant volatile std::atomic_flag f; 6279101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 6379101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_relaxed) == 0); 6479101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 6579101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 6679101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 6779101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant volatile std::atomic_flag f; 6879101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 6979101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_consume) == 0); 7079101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 7179101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 7279101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 7379101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant volatile std::atomic_flag f; 7479101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 7579101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_acquire) == 0); 7679101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 7779101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 7879101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 7979101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant volatile std::atomic_flag f; 8079101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 8179101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_release) == 0); 8279101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 8379101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 8479101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 8579101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant volatile std::atomic_flag f; 8679101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 8779101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_acq_rel) == 0); 8879101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 8979101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 9079101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant { 9179101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant volatile std::atomic_flag f; 9279101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant f.clear(); 9379101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(atomic_flag_test_and_set_explicit(&f, std::memory_order_seq_cst) == 0); 9479101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant assert(f.test_and_set() == 1); 9579101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant } 9679101aec3ad3070ad1378ca1450b72edf8ed67daHoward Hinnant} 97