2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005, 2006, 2007 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
39 static void *malloc_and_zero(size_t n
) {
40 void *ptr
= malloc(n
);
42 if(ptr
) memset(ptr
, 0, n
);
47 static void *(*do_malloc
)(size_t) = GC_malloc
;
48 static void *(*do_realloc
)(void *, size_t) = GC_realloc
;
49 static void *(*do_malloc_atomic
)(size_t) = GC_malloc_atomic
;
50 static void (*do_free
)(void *) = GC_free
;
52 static void *(*do_malloc
)(size_t) = malloc_and_zero
;
53 static void *(*do_realloc
)(void *, size_t) = realloc
;
54 static void *(*do_malloc_atomic
)(size_t) = malloc
;
55 static void (*do_free
)(void *) = free
;
62 if(((e
= getenv("DISORDER_GC")) && !strcmp(e
, "no"))) {
63 do_malloc
= malloc_and_zero
;
64 do_malloc_atomic
= malloc
;
69 assert(GC_all_interior_pointers
);
74 void *xmalloc(size_t n
) {
77 if(!(ptr
= do_malloc(n
)) && n
)
78 fatal(errno
, "error allocating memory");
82 void *xrealloc(void *ptr
, size_t n
) {
83 if(!(ptr
= do_realloc(ptr
, n
)) && n
)
84 fatal(errno
, "error allocating memory");
88 void *xcalloc(size_t count
, size_t size
) {
89 if(count
> SIZE_MAX
/ size
)
90 fatal(0, "excessively large calloc");
91 return xmalloc(count
* size
);
94 void *xmalloc_noptr(size_t n
) {
97 if(!(ptr
= do_malloc_atomic(n
)) && n
)
98 fatal(errno
, "error allocating memory");
102 void *xrealloc_noptr(void *ptr
, size_t n
) {
104 return xmalloc_noptr(n
);
105 if(!(ptr
= do_realloc(ptr
, n
)) && n
)
106 fatal(errno
, "error allocating memory");
110 char *xstrdup(const char *s
) {
113 if(!(t
= do_malloc_atomic(strlen(s
) + 1)))
114 fatal(errno
, "error allocating memory");
118 char *xstrndup(const char *s
, size_t n
) {
121 if(!(t
= do_malloc_atomic(n
+ 1)))
122 fatal(errno
, "error allocating memory");
128 void xfree(void *ptr
) {