Commit | Line | Data |
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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
320598d4 | 3 | * Copyright (C) 2004, 2005, 2006, 2007 Richard Kettlewell |
460b9539 | 4 | * |
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. | |
9 | * | |
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. | |
14 | * | |
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 | |
18 | * USA | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include "types.h" | |
23 | ||
320598d4 | 24 | #if GC |
460b9539 | 25 | #include <gc.h> |
320598d4 | 26 | #endif |
460b9539 | 27 | #include <errno.h> |
28 | #include <string.h> | |
29 | #include <stdio.h> | |
30 | #include <stdlib.h> | |
433e561f | 31 | #include <assert.h> |
460b9539 | 32 | |
33 | #include "mem.h" | |
34 | #include "log.h" | |
35 | #include "printf.h" | |
36 | ||
37 | #include "disorder.h" | |
38 | ||
460b9539 | 39 | static void *malloc_and_zero(size_t n) { |
40 | void *ptr = malloc(n); | |
41 | ||
42 | if(ptr) memset(ptr, 0, n); | |
43 | return ptr; | |
44 | } | |
45 | ||
320598d4 RK |
46 | #if GC |
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; | |
51 | #else | |
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; | |
56 | #endif | |
57 | ||
58 | void mem_init(void) { | |
59 | #if GC | |
460b9539 | 60 | const char *e; |
61 | ||
320598d4 | 62 | if(((e = getenv("DISORDER_GC")) && !strcmp(e, "no"))) { |
460b9539 | 63 | do_malloc = malloc_and_zero; |
64 | do_malloc_atomic = malloc; | |
65 | do_realloc = realloc; | |
66 | do_free = free; | |
433e561f | 67 | } else { |
460b9539 | 68 | GC_init(); |
433e561f | 69 | assert(GC_all_interior_pointers); |
70 | } | |
320598d4 | 71 | #endif |
460b9539 | 72 | } |
73 | ||
74 | void *xmalloc(size_t n) { | |
75 | void *ptr; | |
76 | ||
77 | if(!(ptr = do_malloc(n)) && n) | |
78 | fatal(errno, "error allocating memory"); | |
79 | return ptr; | |
80 | } | |
81 | ||
82 | void *xrealloc(void *ptr, size_t n) { | |
83 | if(!(ptr = do_realloc(ptr, n)) && n) | |
84 | fatal(errno, "error allocating memory"); | |
85 | return ptr; | |
86 | } | |
87 | ||
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); | |
92 | } | |
93 | ||
94 | void *xmalloc_noptr(size_t n) { | |
95 | void *ptr; | |
96 | ||
97 | if(!(ptr = do_malloc_atomic(n)) && n) | |
98 | fatal(errno, "error allocating memory"); | |
99 | return ptr; | |
100 | } | |
101 | ||
102 | void *xrealloc_noptr(void *ptr, size_t n) { | |
103 | if(ptr == 0) | |
104 | return xmalloc_noptr(n); | |
105 | if(!(ptr = do_realloc(ptr, n)) && n) | |
106 | fatal(errno, "error allocating memory"); | |
107 | return ptr; | |
108 | } | |
109 | ||
110 | char *xstrdup(const char *s) { | |
111 | char *t; | |
112 | ||
113 | if(!(t = do_malloc_atomic(strlen(s) + 1))) | |
114 | fatal(errno, "error allocating memory"); | |
115 | return strcpy(t, s); | |
116 | } | |
117 | ||
118 | char *xstrndup(const char *s, size_t n) { | |
119 | char *t; | |
120 | ||
121 | if(!(t = do_malloc_atomic(n + 1))) | |
122 | fatal(errno, "error allocating memory"); | |
123 | memcpy(t, s, n); | |
124 | t[n] = 0; | |
125 | return t; | |
126 | } | |
127 | ||
128 | void xfree(void *ptr) { | |
129 | do_free(ptr); | |
130 | } | |
131 | ||
132 | /* | |
133 | Local Variables: | |
134 | c-basic-offset:2 | |
135 | comment-column:40 | |
136 | End: | |
137 | */ |