atomic_signal_fence

void atomic_signal_fence( memory_order order );

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 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.

Parameters

Return value

(none).

References

• C17 standard (ISO/IEC 9899:2018):
• 7.17.4.2 The atomic_signal_fence function (p: 204-205)
• C11 standard (ISO/IEC 9899:2011):
• 7.17.4.2 The atomic_signal_fence function (p: 279)

See also