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ieee1284_unref
Langue: en
Version: 09/18/2007 (debian - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
ieee1284_ref, ieee1284_unref - modify a port's reference countSYNOPSIS
#include <ieee1284.h>
- int ieee1284_ref(struct parport *port);
- int ieee1284_unref(struct parport *port);
DESCRIPTION
- If you want to free the port list from ieee1284_find_ports but open one of the ports later on, you will need to prevent it from being destroyed in ieee1284_free_ports. Each port has a reference count, and you can use ieee1284_ref to increment it and ieee1284_unref to decrement it.
If you use ieee1284_ref at any stage, you must later call ieee1284_unref to relinquish the extra reference. If you do not do this, the resources associated with the port will not be cleaned up.
If you have not previously used ieee1284_ref on a port, you must not use ieee1284_unref on it.
RETURN VALUE
These functions return the number of references held after the increment or decrement.
SEE ALSO
AUTHOR
Tim Waugh <twaugh@redhat.com>
- Author.
COPYRIGHT
Copyright © 2001-2003 Tim WaughContenus ©2006-2024 Benjamin Poulain
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