atomic_signal_fence

atomic_signal_fence

Defined in header <stdatomic.h>
void atomic_signal_fence( memory_order order );
(since C11)

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

order - the memory ordering executed by this fence

Return value

(none).

References

  • C11 standard (ISO/IEC 9899:2011):
    • 7.17.4.2 The atomic_signal_fence function (p: 279)

See also

(C11)
generic memory order-dependent fence synchronization primitive
(function)
C++ documentation for atomic_signal_fence

© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/c/atomic/atomic_signal_fence

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