iofunc_unblock_default()

Обработчик разблокировки по умолчанию

Прототип:

#include <sys/iofunc.h>
                                       
int iofunc_unblock_default( resmgr_context_t *ctp,
                            io_pulse_t *msg,
                            iofunc_ocb_t *ocb );

Аргументы:

ctp

A pointer to a resmgr_context_t structure that the resource-manager library uses to pass context information between functions.

msg

A pointer to the io_pulse_t structure that describes the pulse that the resource manager received.

ocb

A pointer to the iofunc_ocb_t structure for the Open Control Block that was created when the client opened the resource.

Библиотека:

libc

Описание:

The iofunc_unblock_default() function calls iofunc_unblock().

The iofunc_unblock_default() function implements the functionality required when the client requests to be unblocked (e.g. a signal or timeout).

You can place this function directly into the io_funcs table passed to resmgr_attach(), at the unblock position, or you can call iofunc_func_init() to initialize all of the functions to their default values.

The unblock message is synthesized by the resource-manager shared library when a client wishes to unblock from its MsgSendv() to the resource manager. The iofunc_unblock_default() function takes care of freeing up any locks that the client may have placed on the resource.

Возвращаемое значение:

_RESMGR_DEFAULT

No client connection was found.

_RESMGR_NOREPLY

A client connection has been unblocked.

Примеры:

If you're calling iofunc_lock_default(), your unblock handler should call iofunc_unblock_default():

if ( (status = iofunc_unblock_default( ... )) != _RESMGR_DEFAULT )
{
    return (status);
}
                                       
/* Do your own thing to look for a client to unblock */

Классификация:

ЗОСРВ «Нейтрино»

Точка остановки потока

Нет

Обработчик прерываний

Нет

Обработчик сигналов

Да

В потоке

Да

Тематические ссылки:

iofunc_func_init(), iofunc_lock_default(), iofunc_ocb_t, resmgr_attach(), resmgr_context_t, resmgr_io_funcs_t

Предыдущий раздел: Описание API системной библиотеки