rcm.c

来自「打魔兽战网的都知道他是什么」· C语言 代码 · 共 76 行

/*
 * Copyright (C) 2004  Dizzy 
 *
 * 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) any later version.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include "common/setup_before.h"
#ifdef HAVE_ASSERT_H
# include <assert.h>
#endif
#include "common/xalloc.h"
#include "common/elist.h"
#include "common/rcm.h"
#include "common/setup_after.h"

extern void rcm_init(t_rcm *rcm)
{
    assert(rcm);

    elist_init(&rcm->refs);
    rcm->count = 0;
}

extern void rcm_regref_init(t_rcm_regref *regref, t_chref_cb cb, void *data)
{
    assert(regref);

    elist_init(&regref->refs_link);
    regref->chref = cb;
    regref->data = data;
}

extern void rcm_get(t_rcm *rcm, t_rcm_regref *regref)
{
    assert(rcm);
    assert(regref);

    rcm->count++;
    elist_add_tail(&rcm->refs,&regref->refs_link);
}

extern void rcm_put(t_rcm *rcm, t_rcm_regref *regref)
{
    assert(rcm);
    assert(regref);
    assert(rcm->count);	/* might use eventlog but I want this stopped fast */

    rcm->count--;
    elist_del(&regref->refs_link);
}

extern void rcm_chref(t_rcm *rcm, void *newref)
{
    t_elist *curr, *save;
    t_rcm_regref *regref;

    assert(rcm);

    elist_for_each_safe(curr,&rcm->refs,save) {
	regref = elist_entry(curr,t_rcm_regref,refs_link);
	if (regref->chref) regref->chref(regref->data,newref);
    }
}