3 * $Id: reffd.c,v 1.2 2004/04/08 01:36:25 mdw Exp $
5 * Reference counted file descriptors
7 * (c) 1999 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of the `fw' port forwarder.
14 * `fw' is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * `fw' is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with `fw'; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 /*----- Header files ------------------------------------------------------*/
35 #include <sys/types.h>
42 /*----- Main code ---------------------------------------------------------*/
44 /* --- @reffd_init@ --- *
46 * Arguments: @int fd@ = file descriptor
48 * Returns: Reference-counted file descriptor object.
50 * Use: Creates a refcounted file descriptor.
53 reffd
*reffd_init(int fd
)
55 reffd
*r
= CREATE(reffd
);
63 /* --- @reffd_handler@ --- *
65 * Arguments: @reffd *r@ = pointer to reference counted filehandle
66 * @void (*proc)(void *p)@ = procedure to call
71 * Use: Sets the reference counted file descriptor to call @proc@
72 * when it is no longer required.
75 void reffd_handler(reffd
*r
, void (*proc
)(void *p
), void *p
)
81 /* --- @reffd_inc@ --- *
83 * Arguments: @reffd *r@ = pointer to reference counted filehandle
87 * Use: Increments the reference count for a file descriptor.
90 void reffd_inc(reffd
*r
) { REFFD_INC(r
); }
92 /* --- @reffd_dec@ --- *
94 * Arguments: @reffd *r@ = pointer to reference counted filehandle
98 * Use: Decrements the reference count for a file descriptor.
101 void reffd_dec(reffd
*r
) { REFFD_DEC(r
); }
103 /*----- That's all, folks -------------------------------------------------*/