2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005, 2006 Richard Kettlewell
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
36 static void *(*do_malloc
)(size_t) = GC_malloc
;
37 static void *(*do_realloc
)(void *, size_t) = GC_realloc
;
38 static void *(*do_malloc_atomic
)(size_t) = GC_malloc_atomic
;
39 static void (*do_free
)(void *) = GC_free
;
41 static void *malloc_and_zero(size_t n
) {
42 void *ptr
= malloc(n
);
44 if(ptr
) memset(ptr
, 0, n
);
48 void mem_init(int gc
) {
51 if(!gc
|| ((e
= getenv("DISORDER_GC")) && !strcmp(e
, "no"))) {
52 do_malloc
= malloc_and_zero
;
53 do_malloc_atomic
= malloc
;
60 void *xmalloc(size_t n
) {
63 if(!(ptr
= do_malloc(n
)) && n
)
64 fatal(errno
, "error allocating memory");
68 void *xrealloc(void *ptr
, size_t n
) {
69 if(!(ptr
= do_realloc(ptr
, n
)) && n
)
70 fatal(errno
, "error allocating memory");
74 void *xcalloc(size_t count
, size_t size
) {
75 if(count
> SIZE_MAX
/ size
)
76 fatal(0, "excessively large calloc");
77 return xmalloc(count
* size
);
80 void *xmalloc_noptr(size_t n
) {
83 if(!(ptr
= do_malloc_atomic(n
)) && n
)
84 fatal(errno
, "error allocating memory");
88 void *xrealloc_noptr(void *ptr
, size_t n
) {
90 return xmalloc_noptr(n
);
91 if(!(ptr
= do_realloc(ptr
, n
)) && n
)
92 fatal(errno
, "error allocating memory");
96 char *xstrdup(const char *s
) {
99 if(!(t
= do_malloc_atomic(strlen(s
) + 1)))
100 fatal(errno
, "error allocating memory");
104 char *xstrndup(const char *s
, size_t n
) {
107 if(!(t
= do_malloc_atomic(n
+ 1)))
108 fatal(errno
, "error allocating memory");
114 void xfree(void *ptr
) {