Commit | Line | Data |
---|---|---|
8fc5ef7d BT |
1 | /* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
2 | * 2004, 2006, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. | |
c7743d02 | 3 | * |
73be1d9e | 4 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
5 | * modify it under the terms of the GNU Lesser General Public License |
6 | * as published by the Free Software Foundation; either version 3 of | |
7 | * the License, or (at your option) any later version. | |
c7743d02 | 8 | * |
53befeb7 NJ |
9 | * This library is distributed in the hope that it will be useful, but |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
c7743d02 | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | * 02110-1301 USA | |
73be1d9e | 18 | */ |
c7743d02 HWN |
19 | |
20 | ||
21 | \f | |
dbb605f5 | 22 | #ifdef HAVE_CONFIG_H |
132fa21f RB |
23 | # include <config.h> |
24 | #endif | |
25 | ||
c7743d02 HWN |
26 | #include <stdio.h> |
27 | #include <errno.h> | |
28 | #include <string.h> | |
29 | ||
30 | #ifdef __ia64__ | |
31 | #include <ucontext.h> | |
32 | extern unsigned long * __libc_ia64_register_backing_store_base; | |
33 | #endif | |
34 | ||
35 | #include "libguile/_scm.h" | |
36 | #include "libguile/eval.h" | |
37 | #include "libguile/stime.h" | |
38 | #include "libguile/stackchk.h" | |
39 | #include "libguile/struct.h" | |
40 | #include "libguile/smob.h" | |
2fa901a5 | 41 | #include "libguile/arrays.h" |
c7743d02 HWN |
42 | #include "libguile/async.h" |
43 | #include "libguile/ports.h" | |
44 | #include "libguile/root.h" | |
45 | #include "libguile/strings.h" | |
46 | #include "libguile/vectors.h" | |
c7743d02 HWN |
47 | #include "libguile/hashtab.h" |
48 | #include "libguile/tags.h" | |
49 | ||
50 | #include "libguile/validate.h" | |
51 | #include "libguile/deprecation.h" | |
52 | #include "libguile/gc.h" | |
53 | ||
54 | #include "libguile/private-gc.h" | |
55 | ||
56 | #ifdef GUILE_DEBUG_MALLOC | |
57 | #include "libguile/debug-malloc.h" | |
58 | #endif | |
59 | ||
60 | #ifdef HAVE_MALLOC_H | |
61 | #include <malloc.h> | |
62 | #endif | |
63 | ||
64 | #ifdef HAVE_UNISTD_H | |
65 | #include <unistd.h> | |
66 | #endif | |
67 | ||
68 | /* | |
69 | INIT_MALLOC_LIMIT is the initial amount of malloc usage which will | |
70 | trigger a GC. | |
71 | ||
72 | After startup (at the guile> prompt), we have approximately 100k of | |
73 | alloced memory, which won't go away on GC. Let's set the init such | |
74 | that we get a nice yield on the next allocation: | |
75 | */ | |
c2cbcc57 | 76 | #define SCM_DEFAULT_INIT_MALLOC_LIMIT 200*1024 |
c7743d02 HWN |
77 | #define SCM_DEFAULT_MALLOC_MINYIELD 40 |
78 | ||
61ef9c1f | 79 | /* #define DEBUGINFO */ |
c7743d02 | 80 | |
c7743d02 HWN |
81 | |
82 | \f | |
83 | /* Function for non-cell memory management. | |
84 | */ | |
85 | ||
c7743d02 HWN |
86 | void * |
87 | scm_realloc (void *mem, size_t size) | |
88 | { | |
89 | void *ptr; | |
90 | ||
fd51e661 AW |
91 | scm_gc_register_allocation (size); |
92 | ||
c7743d02 HWN |
93 | SCM_SYSCALL (ptr = realloc (mem, size)); |
94 | if (ptr) | |
95 | return ptr; | |
96 | ||
26224b3f | 97 | /* Time is hard: trigger a full, ``stop-the-world'' GC, and try again. */ |
4eb28612 | 98 | #ifdef HAVE_GC_GCOLLECT_AND_UNMAP |
fd51e661 | 99 | GC_gcollect_and_unmap (); |
4eb28612 CJY |
100 | #else |
101 | GC_gcollect (); | |
102 | #endif | |
b17e0ac3 | 103 | |
c7743d02 HWN |
104 | SCM_SYSCALL (ptr = realloc (mem, size)); |
105 | if (ptr) | |
106 | return ptr; | |
107 | ||
108 | scm_memory_error ("realloc"); | |
109 | } | |
110 | ||
39e8f371 HWN |
111 | void * |
112 | scm_malloc (size_t sz) | |
113 | { | |
114 | return scm_realloc (NULL, sz); | |
115 | } | |
ba1b2226 HWN |
116 | |
117 | /* | |
118 | Hmm. Should we use the C convention for arguments (i.e. N_ELTS, | |
119 | SIZEOF_ELT)? --hwn | |
120 | */ | |
121 | void * | |
122 | scm_calloc (size_t sz) | |
123 | { | |
1383773b HWN |
124 | void * ptr; |
125 | ||
126 | /* | |
127 | By default, try to use calloc, as it is likely more efficient than | |
128 | calling memset by hand. | |
129 | */ | |
fb50ef08 | 130 | SCM_SYSCALL (ptr = calloc (sz, 1)); |
1383773b HWN |
131 | if (ptr) |
132 | return ptr; | |
26224b3f | 133 | |
1383773b | 134 | ptr = scm_realloc (NULL, sz); |
ba1b2226 HWN |
135 | memset (ptr, 0x0, sz); |
136 | return ptr; | |
137 | } | |
138 | ||
39e8f371 | 139 | |
c7743d02 HWN |
140 | char * |
141 | scm_strndup (const char *str, size_t n) | |
142 | { | |
fb50ef08 | 143 | char *dst = scm_malloc (n + 1); |
c7743d02 HWN |
144 | memcpy (dst, str, n); |
145 | dst[n] = 0; | |
146 | return dst; | |
147 | } | |
148 | ||
149 | char * | |
150 | scm_strdup (const char *str) | |
151 | { | |
152 | return scm_strndup (str, strlen (str)); | |
153 | } | |
154 | ||
b17e0ac3 | 155 | |
cbfe8e62 HWN |
156 | |
157 | void | |
158 | scm_gc_register_collectable_memory (void *mem, size_t size, const char *what) | |
159 | { | |
76f3ee77 AW |
160 | scm_gc_register_allocation (size); |
161 | ||
c7743d02 HWN |
162 | #ifdef GUILE_DEBUG_MALLOC |
163 | if (mem) | |
8fc5ef7d | 164 | scm_malloc_register (mem, what); |
c7743d02 HWN |
165 | #endif |
166 | } | |
167 | ||
cbfe8e62 | 168 | |
c7743d02 HWN |
169 | void |
170 | scm_gc_unregister_collectable_memory (void *mem, size_t size, const char *what) | |
171 | { | |
c5018a2b | 172 | /* Nothing to do. */ |
c7743d02 HWN |
173 | #ifdef GUILE_DEBUG_MALLOC |
174 | if (mem) | |
175 | scm_malloc_unregister (mem); | |
176 | #endif | |
177 | } | |
178 | ||
3ef6650d AW |
179 | /* Allocate SIZE bytes of memory whose contents should not be scanned |
180 | for pointers (useful, e.g., for strings). Note though that this | |
181 | memory is *not* cleared; be sure to initialize it to prevent | |
182 | information leaks. */ | |
c5018a2b LC |
183 | void * |
184 | scm_gc_malloc_pointerless (size_t size, const char *what) | |
185 | { | |
186 | return GC_MALLOC_ATOMIC (size); | |
187 | } | |
188 | ||
c7743d02 HWN |
189 | void * |
190 | scm_gc_malloc (size_t size, const char *what) | |
191 | { | |
ea4f8ea1 LC |
192 | void *ptr; |
193 | ||
194 | if (size == 0) | |
195 | /* `GC_MALLOC ()' doesn't handle zero. */ | |
196 | size = sizeof (void *); | |
197 | ||
198 | ptr = GC_MALLOC (size); | |
199 | ||
c7743d02 HWN |
200 | return ptr; |
201 | } | |
202 | ||
39e8f371 HWN |
203 | void * |
204 | scm_gc_calloc (size_t size, const char *what) | |
205 | { | |
b1f6293e LC |
206 | /* `GC_MALLOC ()' always returns a zeroed buffer. */ |
207 | return scm_gc_malloc (size, what); | |
39e8f371 HWN |
208 | } |
209 | ||
210 | ||
c7743d02 HWN |
211 | void * |
212 | scm_gc_realloc (void *mem, size_t old_size, size_t new_size, const char *what) | |
213 | { | |
53f18a0d KR |
214 | void *ptr; |
215 | ||
26224b3f | 216 | ptr = GC_REALLOC (mem, new_size); |
cbfe8e62 HWN |
217 | |
218 | #ifdef GUILE_DEBUG_MALLOC | |
219 | if (mem) | |
220 | scm_malloc_reregister (mem, ptr, what); | |
221 | #endif | |
26224b3f | 222 | |
c7743d02 HWN |
223 | return ptr; |
224 | } | |
225 | ||
226 | void | |
227 | scm_gc_free (void *mem, size_t size, const char *what) | |
228 | { | |
229 | scm_gc_unregister_collectable_memory (mem, size, what); | |
26224b3f | 230 | GC_FREE (mem); |
c7743d02 HWN |
231 | } |
232 | ||
233 | char * | |
234 | scm_gc_strndup (const char *str, size_t n, const char *what) | |
235 | { | |
e7acfa88 | 236 | char *dst = GC_MALLOC_ATOMIC (n + 1); |
c7743d02 HWN |
237 | memcpy (dst, str, n); |
238 | dst[n] = 0; | |
239 | return dst; | |
240 | } | |
241 | ||
242 | char * | |
243 | scm_gc_strdup (const char *str, const char *what) | |
244 | { | |
245 | return scm_gc_strndup (str, strlen (str), what); | |
246 | } |