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https://git.code.sf.net/p/quake/quakeforge
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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
/*
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pr_zone.c
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(description)
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <stdarg.h>
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#include "QF/cvar.h"
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#include "QF/mathlib.h"
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#include "QF/progs.h"
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#include "QF/sys.h"
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#include "QF/zone.h"
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#include "compat.h"
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static void
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pr_zone_error (void *_pr, const char *msg)
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{
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progs_t *pr = (progs_t *) _pr;
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Z_Print (pr->zone);
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PR_RunError (pr, "%s", msg);
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}
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void
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PR_Zone_Init (progs_t *pr)
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{
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Z_ClearZone (pr->zone, pr->zone_size,
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(pr_type_t *)pr->zone - pr->pr_globals, sizeof (pr_type_t));
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Z_SetError (pr->zone, pr_zone_error, pr);
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}
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VISIBLE void
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PR_Zone_Free (progs_t *pr, void *ptr)
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{
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if (ptr) {
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Z_Free (pr->zone, ptr);
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}
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}
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VISIBLE void *
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PR_Zone_Malloc (progs_t *pr, pr_int_t size)
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{
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if (!size) {
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return 0;
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}
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if (size < 0) {
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PR_RunError (pr, "attempt to allocate less than 0 bytes");
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}
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return Z_Malloc (pr->zone, size);
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}
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VISIBLE void *
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PR_Zone_TagMalloc (progs_t *pr, int size, int tag)
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{
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if (!size) {
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return 0;
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}
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if (size < 0) {
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PR_RunError (pr, "attempt to allocate less than 0 bytes");
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}
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return Z_TagMalloc (pr->zone, size, tag);
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}
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VISIBLE void *
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PR_Zone_Realloc (progs_t *pr, void *ptr, pr_int_t size)
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{
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if (ptr && !size) {
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Z_Free (pr->zone, ptr);
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return 0;
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}
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if (!size) {
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return 0;
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}
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if (size < 0) {
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PR_RunError (pr, "attempt to allocate less than 0 bytes");
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}
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return Z_Realloc (pr->zone, ptr, size);
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}
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