cnd_wait - cppreference.com
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    cnd_wait

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    Tema Biblioteca de ayuda
    Threads
    Original:
    Threads
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    Exclusión mutua
    Original:
    Mutual exclusion
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    Llame a la vez
    Original:
    Call once
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    Las variables de condición
    Original:
    Condition variables
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    Almacenamiento local de subprocesos
    Original:
    Thread-local storage
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    Definido en el archivo de encabezado <threads.h> 
    int cnd_wait( cnd_t* cond, mtx_t* mutex );
    		(desde C11)
    Atómicamente bloquea el mutex apuntado por mutex y los bloques de la variable condición a la que apunta cond hasta que el flujo se indica mediante cnd_signal o cnd_broadcast. La exclusión mutua se bloquea de nuevo antes de que la función regrese .
    Original:
    Atomically locks the mutex pointed to by mutex and blocks on the condition variable pointed to by cond until the thread is signalled by cnd_signal or cnd_broadcast. The mutex is locked again before the function returns.
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    El comportamiento no está definido si la exclusión mutua no está bloqueado por el subproceso de llamada .
    Original:
    The behavior is undefined if the mutex is not already locked by the calling thread.
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    Parámetros

    cond -
    puntero a la variable de estado para bloquear sucesivamente
    Original:
    pointer to the condition variable to block on
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    mutex -
    puntero a la exclusión mutua para desbloquear durante la duración del bloque
    Original:
    pointer to the mutex to unlock for the duration of the block
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    Valor de retorno

    thrd_success de tener éxito, de lo contrario thrd_error .
    Original:
    thrd_success if successful, thrd_error otherwise.
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    Ver también