mdw@git.distorted.org.uk Git - fwd/blob - target.c

   1 /* -*-c-*-
   2  *
   3  * Common functionality for targets
   4  *
   5  * (c) 2018 Straylight/Edgeware
   6  */
   7
   8 /*----- Licensing notice --------------------------------------------------*
   9  *
  10  * This file is part of the `fwd' port forwarder.
  11  *
  12  * `fwd' is free software: you can redistribute it and/or modify it under
  13  * the terms of the GNU General Public License as published by the Free
  14  * Software Foundation; either version 2 of the License, or (at your
  15  * option) any later version.
  16  *
  17  * `fwd' is distributed in the hope that it will be useful, but WITHOUT
  18  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  20  * for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with `fwd'.  If not, write to the Free Software Foundation,
  24  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  25  */
  26
  27 /*----- Header files ------------------------------------------------------*/
  28
  29 #include "fwd.h"
  30
  31 /*----- Main code ---------------------------------------------------------*/
  32
  33 /* --- @target_inc@ --- *
  34  *
  35  * Arguments:   @target *t@ = pointer to a source
  36  *
  37  * Returns:     ---
  38  *
  39  * Use:         Increments a target's refcount.
  40  */
  41
  42 void target_inc(target *t) { t->ref++; }
  43
  44 /* --- @target_dec@ --- *
  45  *
  46  * Arguments:   @target *t@ = pointer to a target
  47  *
  48  * Returns:     ---
  49  *
  50  * Use:         Decrements a target's refcount, destroying it if necessary.
  51  */
  52
  53 void target_dec(target *t)
  54 {
  55   assert(t->ref > 0);
  56   t->ref--;
  57   if (!t->ref) t->ops->destroy(t);
  58 }
  59
  60 /*----- That's all, folks -------------------------------------------------*/