cb_list.h

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/* template header file */
/* Copyright (C) 2010 Holger Dietze
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) version 3.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License along
 *   with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef CB_LIST_H
#define CB_LIST_H

#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif


typedef uint16_t (* cb_function_t)(void *);

typedef struct cb_list_entry_s {
  struct cb_list_entry_s * next_entry;
  cb_function_t pTargetFkt;
  void * FktArg;
} cb_list_entry_t;

typedef cb_list_entry_t *cb_list_t;

inline void callback_iterate (cb_list_t list)
{
  cb_list_entry_t * p;
  for (p = list; p; p = p->next_entry) {
    (*p->pTargetFkt) (p->FktArg);
  }
}

inline uint16_t callback_iterate_and_until0 (cb_list_t list)
{
  cb_list_entry_t * p;
  uint16_t result = 0xffff;
  for (p = list; result && p; p = p->next_entry) {
    result &= (*p->pTargetFkt) (p->FktArg);
  }
  return result;
}

inline void cb_register_call(cb_list_t * list,
                             cb_function_t fkt2call, void *arg)
{
  cb_list_entry_t * n;

  // create new element
  n = malloc(sizeof(cb_list_entry_t));
  // link in current start element
  n->next_entry = *list;
  // initialize
  n->pTargetFkt = fkt2call;
  n->FktArg = arg;
          
  // store new element into first
  *list = n;
}

#endif