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author | Jens Arnold <amiconn@rockbox.org> | 2005-11-27 23:41:55 +0000 |
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committer | Jens Arnold <amiconn@rockbox.org> | 2005-11-27 23:41:55 +0000 |
commit | 7c21a96e9afa3408ca0b459a392275aa0ae77608 (patch) | |
tree | 9933c4012631b53e72478b14db6315dfcaba5c32 /tools/ucl/src/alloc.c | |
parent | f04577377d879d040ef046c38f6ab18b84a51341 (diff) | |
download | rockbox-7c21a96e9afa3408ca0b459a392275aa0ae77608.tar.gz rockbox-7c21a96e9afa3408ca0b459a392275aa0ae77608.zip |
Initial check-in of (stripped-down) UCL data compression library v 1.01
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8087 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'tools/ucl/src/alloc.c')
-rw-r--r-- | tools/ucl/src/alloc.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/tools/ucl/src/alloc.c b/tools/ucl/src/alloc.c new file mode 100644 index 0000000000..d32ea5113a --- /dev/null +++ b/tools/ucl/src/alloc.c | |||
@@ -0,0 +1,151 @@ | |||
1 | /* alloc.c -- memory allocation | ||
2 | |||
3 | This file is part of the UCL data compression library. | ||
4 | |||
5 | Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer | ||
6 | All Rights Reserved. | ||
7 | |||
8 | The UCL library is free software; you can redistribute it and/or | ||
9 | modify it under the terms of the GNU General Public License as | ||
10 | published by the Free Software Foundation; either version 2 of | ||
11 | the License, or (at your option) any later version. | ||
12 | |||
13 | The UCL library is distributed in the hope that it will be useful, | ||
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
16 | GNU General Public License for more details. | ||
17 | |||
18 | You should have received a copy of the GNU General Public License | ||
19 | along with the UCL library; see the file COPYING. | ||
20 | If not, write to the Free Software Foundation, Inc., | ||
21 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
22 | |||
23 | Markus F.X.J. Oberhumer | ||
24 | <markus@oberhumer.com> | ||
25 | http://www.oberhumer.com/opensource/ucl/ | ||
26 | */ | ||
27 | |||
28 | |||
29 | #include "ucl_conf.h" | ||
30 | |||
31 | #if defined(HAVE_MALLOC_H) | ||
32 | # include <malloc.h> | ||
33 | #endif | ||
34 | #if defined(__palmos__) | ||
35 | # include <System/MemoryMgr.h> | ||
36 | #endif | ||
37 | |||
38 | |||
39 | #undef ucl_alloc_hook | ||
40 | #undef ucl_free_hook | ||
41 | #undef ucl_alloc | ||
42 | #undef ucl_malloc | ||
43 | #undef ucl_free | ||
44 | |||
45 | |||
46 | /*********************************************************************** | ||
47 | // implementation | ||
48 | ************************************************************************/ | ||
49 | |||
50 | UCL_PRIVATE(ucl_voidp) | ||
51 | ucl_alloc_internal(ucl_uint nelems, ucl_uint size) | ||
52 | { | ||
53 | ucl_voidp p = NULL; | ||
54 | unsigned long s = (unsigned long) nelems * size; | ||
55 | |||
56 | if (nelems <= 0 || size <= 0 || s < nelems || s < size) | ||
57 | return NULL; | ||
58 | |||
59 | #if defined(__palmos__) | ||
60 | p = (ucl_voidp) MemPtrNew(s); | ||
61 | #elif (UCL_UINT_MAX <= SIZE_T_MAX) | ||
62 | if (s < SIZE_T_MAX) | ||
63 | p = (ucl_voidp) malloc((size_t)s); | ||
64 | #elif defined(HAVE_HALLOC) && defined(__DMC__) | ||
65 | if (size < SIZE_T_MAX) | ||
66 | p = (ucl_voidp) _halloc(nelems,(size_t)size); | ||
67 | #elif defined(HAVE_HALLOC) | ||
68 | if (size < SIZE_T_MAX) | ||
69 | p = (ucl_voidp) halloc(nelems,(size_t)size); | ||
70 | #else | ||
71 | if (s < SIZE_T_MAX) | ||
72 | p = (ucl_voidp) malloc((size_t)s); | ||
73 | #endif | ||
74 | |||
75 | return p; | ||
76 | } | ||
77 | |||
78 | |||
79 | UCL_PRIVATE(void) | ||
80 | ucl_free_internal(ucl_voidp p) | ||
81 | { | ||
82 | if (!p) | ||
83 | return; | ||
84 | |||
85 | #if defined(__palmos__) | ||
86 | MemPtrFree(p); | ||
87 | #elif (UCL_UINT_MAX <= SIZE_T_MAX) | ||
88 | free(p); | ||
89 | #elif defined(HAVE_HALLOC) && defined(__DMC__) | ||
90 | _hfree(p); | ||
91 | #elif defined(HAVE_HALLOC) | ||
92 | hfree(p); | ||
93 | #else | ||
94 | free(p); | ||
95 | #endif | ||
96 | } | ||
97 | |||
98 | |||
99 | /*********************************************************************** | ||
100 | // public interface using the global hooks | ||
101 | ************************************************************************/ | ||
102 | |||
103 | /* global allocator hooks */ | ||
104 | ucl_alloc_hook_t ucl_alloc_hook = ucl_alloc_internal; | ||
105 | ucl_free_hook_t ucl_free_hook = ucl_free_internal; | ||
106 | |||
107 | |||
108 | UCL_PUBLIC(ucl_voidp) | ||
109 | ucl_alloc(ucl_uint nelems, ucl_uint size) | ||
110 | { | ||
111 | if (!ucl_alloc_hook) | ||
112 | return NULL; | ||
113 | |||
114 | return ucl_alloc_hook(nelems,size); | ||
115 | } | ||
116 | |||
117 | |||
118 | UCL_PUBLIC(ucl_voidp) | ||
119 | ucl_malloc(ucl_uint size) | ||
120 | { | ||
121 | if (!ucl_alloc_hook) | ||
122 | return NULL; | ||
123 | |||
124 | #if defined(__palmos__) | ||
125 | return ucl_alloc_hook(size,1); | ||
126 | #elif (UCL_UINT_MAX <= SIZE_T_MAX) | ||
127 | return ucl_alloc_hook(size,1); | ||
128 | #elif defined(HAVE_HALLOC) | ||
129 | /* use segment granularity by default */ | ||
130 | if (size + 15 > size) /* avoid overflow */ | ||
131 | return ucl_alloc_hook((size+15)/16,16); | ||
132 | return ucl_alloc_hook(size,1); | ||
133 | #else | ||
134 | return ucl_alloc_hook(size,1); | ||
135 | #endif | ||
136 | } | ||
137 | |||
138 | |||
139 | UCL_PUBLIC(void) | ||
140 | ucl_free(ucl_voidp p) | ||
141 | { | ||
142 | if (!ucl_free_hook) | ||
143 | return; | ||
144 | |||
145 | ucl_free_hook(p); | ||
146 | } | ||
147 | |||
148 | |||
149 | /* | ||
150 | vi:ts=4:et | ||
151 | */ | ||