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# std::atomic_signal_fence

From cppreference.com
< 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, writes cannot be moved past a fence with release semantics and reads cannot be moved ahead of a fence with acquire semantics.

### [edit] Parameters

order | - | the memory ordering executed by this fence

### [edit] Return value

(none)

### [edit] Exceptions

`noexcept` specification:
noexcept

### [edit] Example

| This section is incomplete Reason: no example

### [edit] See also

memory_order (C++11) | defines memory ordering constraints for the given atomic operation (typedef) [edit]
atomic_thread_fence (C++11) | generic memory order-dependent fence synchronization primitive (function) [edit]
C documentation for atomic_signal_fence

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