atomic_signal_fence
atomic_signal_fence(memory_order_acquire);
atomic_signal_fence(memory_order_seq_cst);
atomic_signal_fence(memory_order_seq_cst);
atomic_signal_fence(std::memory_order::memory_order_seq_cst);
atomic_signal_fence(std::memory_order::memory_order_seq_cst);
atomic_signal_fence(memory_order_seq_cst);
atomic_signal_fence(memory_order_seq_cst);
atomic_signal_fence(memory_order_seq_cst);
atomic_signal_fence(memory_order_seq_cst);
atomic_signal_fence(memory_order_acquire);
atomic_signal_fence(memory_order_acquire);
atomic_signal_fence(memory_order_release);
atomic_signal_fence(memory_order_release);
atomic_signal_fence(memory_order_acquire);
atomic_signal_fence(memory_order_release);