mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-11 21:31:30 +00:00
349f8067c3
Allocating 0 bytes returns null and freeing a null pointer is safe.
110 lines
2.2 KiB
C
110 lines
2.2 KiB
C
/*
|
|
pr_zone.c
|
|
|
|
(description)
|
|
|
|
Copyright (C) 1996-1997 Id Software, Inc.
|
|
|
|
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
|
|
|
|
#ifdef HAVE_STRING_H
|
|
# include <string.h>
|
|
#endif
|
|
#ifdef HAVE_STRINGS_H
|
|
# include <strings.h>
|
|
#endif
|
|
|
|
#include <stdarg.h>
|
|
|
|
#include "QF/cvar.h"
|
|
#include "QF/mathlib.h"
|
|
#include "QF/progs.h"
|
|
#include "QF/sys.h"
|
|
#include "QF/zone.h"
|
|
|
|
#include "compat.h"
|
|
|
|
static void
|
|
pr_zone_error (void *_pr, const char *msg)
|
|
{
|
|
progs_t *pr = (progs_t *) _pr;
|
|
Z_Print (pr->zone);
|
|
PR_RunError (pr, "%s", msg);
|
|
}
|
|
|
|
void
|
|
PR_Zone_Init (progs_t *pr)
|
|
{
|
|
Z_ClearZone (pr->zone, pr->zone_size,
|
|
(pr_type_t *)pr->zone - pr->pr_globals, sizeof (pr_type_t));
|
|
Z_SetError (pr->zone, pr_zone_error, pr);
|
|
}
|
|
|
|
VISIBLE void
|
|
PR_Zone_Free (progs_t *pr, void *ptr)
|
|
{
|
|
if (ptr) {
|
|
Z_Free (pr->zone, ptr);
|
|
}
|
|
}
|
|
|
|
VISIBLE void *
|
|
PR_Zone_Malloc (progs_t *pr, pr_int_t size)
|
|
{
|
|
if (!size) {
|
|
return 0;
|
|
}
|
|
if (size < 0) {
|
|
PR_RunError (pr, "attempt to allocate less than 0 bytes");
|
|
}
|
|
return Z_Malloc (pr->zone, size);
|
|
}
|
|
|
|
VISIBLE void *
|
|
PR_Zone_TagMalloc (progs_t *pr, int size, int tag)
|
|
{
|
|
if (!size) {
|
|
return 0;
|
|
}
|
|
if (size < 0) {
|
|
PR_RunError (pr, "attempt to allocate less than 0 bytes");
|
|
}
|
|
return Z_TagMalloc (pr->zone, size, tag);
|
|
}
|
|
|
|
VISIBLE void *
|
|
PR_Zone_Realloc (progs_t *pr, void *ptr, pr_int_t size)
|
|
{
|
|
if (ptr && !size) {
|
|
Z_Free (pr->zone, ptr);
|
|
return 0;
|
|
}
|
|
if (!size) {
|
|
return 0;
|
|
}
|
|
if (size < 0) {
|
|
PR_RunError (pr, "attempt to allocate less than 0 bytes");
|
|
}
|
|
return Z_Realloc (pr->zone, ptr, size);
|
|
}
|