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call_once

De cppreference.com
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Bibliothèque de support fil
Threads
Original:
Threads
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L'exclusion mutuelle
Original:
Mutual exclusion
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Appelez fois
Original:
Call once
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call_once
Les variables de condition
Original:
Condition variables
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Stockage local des threads
Original:
Thread-local storage
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Defined in header <threads.h>
void call_once( once_flag* flag, void (*func)(void) );
(depuis C11)
Appels fonctionner func exactement une fois, même si elle est invoquée à partir de plusieurs threads .
Original:
Calls function func exactly once, even if invoked from several threads.
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L'achèvement de la func fonction synchronise avec tous les appels antérieurs ou postérieurs à call_once avec le même flag variable .
Original:
The completion of the function func synchronizes with all previous or subsequent calls to call_once with the same flag variable.
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[modifier] Paramètres

flag -
pointeur vers un objet qui est utilisé pour assurer func est appelée une seule fois
Original:
pointer to an object that is used to ensure func is called only once
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func -
la fonction à exécuter
Original:
the function to execute
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[modifier] Retourne la valeur

(Aucun)
Original:
(none)
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