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    call_once

    De cppreference.com
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    <metanoindex/>

     
    C
     
    Bibliothèque de support fil
    Threads
    Original:
    Threads
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    L'exclusion mutuelle
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    Mutual exclusion
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    Appelez fois
    Original:
    Call once
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    Les variables de condition
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    Condition variables
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    Stockage local des threads
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    Thread-local storage
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    <tbody> </tbody>
    Déclaré dans l'en-tête <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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    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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    Retourne la valeur

    (Aucun)
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    (none)
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