call_once

 

C

Lenguaje

Encabezados

Soporte de tipos

Utilidades del programa

Funciones variádicas

Gestión de errores

Gestión de memoria dinámica

Utilidades de fecha y hora

Biblioteca de cadenas de caracteres

Algoritmos

Números

Soporte de entrada/salida

Soporte de localización

Operaciones atómicas (C11)

Soporte de procesos (C11)

Especificaciones Técnicas

 

Tema Biblioteca de ayuda

Threads Original: Threads The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
thrd_create thrd_equal thrd_current thrd_sleep thrd_yield thrd_exit	thrd_detach thrd_join thrd_successthrd_timedout thrd_busythrd_nomemthrd_error
Exclusión mutua Original: Mutual exclusion The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
mtx_init mtx_lock mtx_timedlock mtx_trylock	mtx_unlock mtx_destroy mtx_types
Llame a la vez Original: Call once The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ONCE_FLAG_INIT	call_once
Las variables de condición Original: Condition variables The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
cnd_init cnd_signal cnd_broadcast	cnd_wait cnd_timedwait cnd_destroy
Almacenamiento local de subprocesos Original: Thread-local storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
thread_local TSS_DTOR_ITERATIONS tss_create	tss_get tss_set tss_delete

 

Definido en el archivo de encabezado <threads.h>
void call_once( once_flag* flag, void (*func)(void) );		(desde C11)

Las llamadas a funciones func exactamente una vez, incluso si se invoca desde varios hilos .

Original:

Calls function func exactly once, even if invoked from several threads.

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La finalización de la func función sincroniza con todas las llamadas anteriores o posteriores a call_once con el mismo 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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Parámetros

flag	-	puntero a un objeto que se utiliza para asegurar func se llama sólo una vez Original: pointer to an object that is used to ensure func is called only once The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
func	-	la función a ejecutar Original: the function to execute The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valor de retorno

(Ninguno)

Original:

(none)

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