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atomic_signal_fence

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< c‎ | atomic

 
 
Atomare Operationen Bibliothek
Types
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Types
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memory_order
atomic_flag
Makros
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Macros
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ATOMIC_***_LOCK_FREE
ATOMIC_FLAG_INIT
ATOMIC_VAR_INIT
kill_dependency
Funktionen
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Functions
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atomic_flag_test_and_set
atomic_flag_clear
atomic_init
atomic_is_lock_free
atomic_store
atomic_load
atomic_exchange
atomic_compare_exchange
atomic_fetch_add
atomic_fetch_sub
atomic_fetch_or
atomic_fetch_xor
atomic_fetch_and
atomic_thread_fence
atomic_signal_fence
 
Defined in header <stdatomic.h>
void atomic_signal_fence( memory_order order );
(Seit C11)
Stellt Speicher Synchronisierung Bestellung von nicht-atomare und entspannt atomare Zugriffe, wie order angewiesen, zwischen einem Thread und einem Signal-Handler auf dem gleichen Thread ausgeführt. Dies entspricht std::atomic_thread_fence, außer keine CPU Befehle für Memory Ordnung emittiert. Nur Neuordnung der Instruktionen durch den Compiler unterdrückt wird order anweist. Zum Beispiel schreibt kann nicht über einen Zaun mit Release Semantik verschoben werden und liest nicht vor einem Zaun mit zu erwerben Semantik verschoben werden .
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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.
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[Bearbeiten] Parameter

order -
der Speicher Bestellung per diesem Zaun ausgeführt
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the memory ordering executed by this fence
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[Bearbeiten] Rückgabewert

(None)
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[Bearbeiten] Siehe auch

generische Memory um-abhängige Zaun Synchronisierungsgrundeinheit
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generic memory order-dependent fence synchronization primitive
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(Funktion) [edit]
C++ documentation for atomic_signal_fence