< cpp‎ | atomic
Defined in header <atomic>
extern "C" void atomic_signal_fence( std::memory_order order );
(since C++11)

Establishes memory synchronization ordering of non-atomic and relaxed atomic accesses, as instructed by order, between a thread and a signal handler executed on the same thread. This is equivalent to std::atomic_thread_fence, except no CPU instructions for memory ordering are issued. Only reordering of the instructions by the compiler is suppressed as order instructs. For example, a fence with release semantics prevents reads or writes from being moved past subsequent writes and a fence with acquire semantics prevents reads or writes from being moved ahead of preceding reads.


order - the memory ordering executed by this fence

Return value



noexcept specification:  


See also

defines memory ordering constraints for the given atomic operation
generic memory order-dependent fence synchronization primitive
C documentation for atomic_signal_fence