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
37 static void *(*do_malloc)(size_t) = GC_malloc;
38 static void *(*do_realloc)(void *, size_t) = GC_realloc;
39 static void *(*do_malloc_atomic)(size_t) = GC_malloc_atomic;
40 static void (*do_free)(void *) = GC_free;
42 static void *malloc_and_zero(size_t n) {
43 void *ptr = malloc(n);
45 if(ptr) memset(ptr, 0, n);
49 void mem_init(int gc) {
52 if(!gc || ((e = getenv("DISORDER_GC")) && !strcmp(e, "no"))) {
53 do_malloc = malloc_and_zero;
54 do_malloc_atomic = malloc;
59 assert(GC_all_interior_pointers);
63 void *xmalloc(size_t n) {
66 if(!(ptr = do_malloc(n)) && n)
67 fatal(errno, "error allocating memory");
71 void *xrealloc(void *ptr, size_t n) {
72 if(!(ptr = do_realloc(ptr, n)) && n)
73 fatal(errno, "error allocating memory");
77 void *xcalloc(size_t count, size_t size) {
78 if(count > SIZE_MAX / size)
79 fatal(0, "excessively large calloc");
80 return xmalloc(count * size);
83 void *xmalloc_noptr(size_t n) {
86 if(!(ptr = do_malloc_atomic(n)) && n)
87 fatal(errno, "error allocating memory");
91 void *xrealloc_noptr(void *ptr, size_t n) {
93 return xmalloc_noptr(n);
94 if(!(ptr = do_realloc(ptr, n)) && n)
95 fatal(errno, "error allocating memory");
99 char *xstrdup(const char *s) {
102 if(!(t = do_malloc_atomic(strlen(s) + 1)))
103 fatal(errno, "error allocating memory");
107 char *xstrndup(const char *s, size_t n) {
110 if(!(t = do_malloc_atomic(n + 1)))
111 fatal(errno, "error allocating memory");
117 void xfree(void *ptr) {