quakeforge/libs/gamecode/pr_resource.c

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/*
pr_resource.c
progs resource management
Copyright (C) 2001 Bill Currie <bill@taniwha.org>
Author: Bill Currie <bill@taniwha.org>
Date: 2002/1/29
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include "QF/hash.h"
#include "QF/progs.h"
#include "QF/sys.h"
struct pr_resource_s {
const char *name;
pr_resource_t *next;
void *data;
void (*clear)(progs_t *pr, void *data);
void (*destroy)(progs_t *pr, void *data);
};
static const char *
resource_get_key (const void *r, void *unused)
{
return ((pr_resource_t *)r)->name;
}
VISIBLE void
PR_Resources_Init (progs_t *pr)
{
pr->resource_hash = Hash_NewTable (1021, resource_get_key, 0, 0,
pr->hashctx);
pr->resources = 0;
}
void
PR_Resources_Clear (progs_t *pr)
{
pr_resource_t *res = pr->resources;
while (res) {
res->clear (pr, res->data);
res = res->next;
}
}
VISIBLE void
PR_Resources_Shutdown (progs_t *pr)
{
// Clear resources first in case there are any cross-dependencies
PR_Resources_Clear (pr);
pr_resource_t *res = pr->resources;
while (res) {
pr_resource_t *t = res->next;
res->destroy (pr, res->data);
free (res->data);
free (res);
res = t;
}
pr->resources = 0;
Hash_DelTable (pr->resource_hash);
pr->resource_hash = 0;
}
VISIBLE void
PR_Resources_Register (progs_t *pr, const char *name, void *data,
void (*clear)(progs_t *, void *),
void (*destroy)(progs_t *, void *))
{
pr_resource_t *res = malloc (sizeof (pr_resource_t));
if (!res)
Sys_Error ("PR_Resources_Register: out of memory");
res->name = name;
res->data = data;
res->clear = clear;
res->destroy = destroy;
res->next = pr->resources;
pr->resources = res;
Hash_Add (pr->resource_hash, res);
}
VISIBLE void *
PR_Resources_Find (progs_t *pr, const char *name)
{
pr_resource_t *res = Hash_Find (pr->resource_hash, name);
if (!res)
return 0;
return res->data;
}