Commit | Line | Data |
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252b5132 | 1 | /* memory allocation routines with error checking. |
1198f921 | 2 | Copyright 1989, 90, 91, 92, 93, 94, 1999 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | This file is part of the libiberty library. | |
5 | Libiberty is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Library General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2 of the License, or (at your option) any later version. | |
9 | ||
10 | Libiberty is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with libiberty; see the file COPYING.LIB. If | |
17 | not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include "ansidecl.h" | |
21 | #include "libiberty.h" | |
22 | ||
23 | #include <stdio.h> | |
24 | ||
25 | #ifdef __STDC__ | |
26 | #include <stddef.h> | |
27 | #else | |
28 | #define size_t unsigned long | |
29 | #define ptrdiff_t long | |
30 | #endif | |
31 | ||
32 | #if VMS | |
33 | #include <stdlib.h> | |
34 | #include <unixlib.h> | |
35 | #else | |
36 | /* For systems with larger pointers than ints, these must be declared. */ | |
37 | PTR malloc PARAMS ((size_t)); | |
38 | PTR realloc PARAMS ((PTR, size_t)); | |
39 | PTR calloc PARAMS ((size_t, size_t)); | |
40 | PTR sbrk PARAMS ((ptrdiff_t)); | |
41 | #endif | |
42 | ||
43 | /* The program name if set. */ | |
44 | static const char *name = ""; | |
45 | ||
46 | #if !defined (__CYGWIN__) && defined (__CYGWIN32__) | |
47 | #define __CYGWIN__ 1 | |
48 | #endif | |
49 | ||
1198f921 ILT |
50 | /* On Unix systems we use sbrk to determine how much memory has been |
51 | allocated. */ | |
52 | #undef USE_SBRK | |
53 | #if (! defined (_WIN32) && ! defined (__INTERIX)) || defined (__CYGWIN__) || defined (__UWIN__) | |
54 | #define USE_SBRK | |
55 | #endif | |
56 | ||
57 | #ifdef USE_SBRK | |
252b5132 RH |
58 | /* The initial sbrk, set when the program name is set. Not used for win32 |
59 | ports other than cygwin32. */ | |
60 | static char *first_break = NULL; | |
1198f921 | 61 | #endif |
252b5132 RH |
62 | |
63 | void | |
64 | xmalloc_set_program_name (s) | |
65 | const char *s; | |
66 | { | |
67 | name = s; | |
1198f921 | 68 | #ifdef USE_SBRK |
252b5132 RH |
69 | if (first_break == NULL) |
70 | first_break = (char *) sbrk (0); | |
1198f921 | 71 | #endif |
252b5132 RH |
72 | } |
73 | ||
74 | PTR | |
75 | xmalloc (size) | |
76 | size_t size; | |
77 | { | |
78 | PTR newmem; | |
79 | ||
80 | if (size == 0) | |
81 | size = 1; | |
82 | newmem = malloc (size); | |
83 | if (!newmem) | |
84 | { | |
1198f921 | 85 | #ifdef USE_SBRK |
252b5132 RH |
86 | extern char **environ; |
87 | size_t allocated; | |
88 | ||
89 | if (first_break != NULL) | |
90 | allocated = (char *) sbrk (0) - first_break; | |
91 | else | |
92 | allocated = (char *) sbrk (0) - (char *) &environ; | |
93 | fprintf (stderr, | |
94 | "\n%s%sCan not allocate %lu bytes after allocating %lu bytes\n", | |
95 | name, *name ? ": " : "", | |
96 | (unsigned long) size, (unsigned long) allocated); | |
97 | #else | |
98 | fprintf (stderr, | |
99 | "\n%s%sCan not allocate %lu bytes\n", | |
100 | name, *name ? ": " : "", | |
101 | (unsigned long) size); | |
1198f921 | 102 | #endif /* ! USE_SBRK */ |
252b5132 RH |
103 | xexit (1); |
104 | } | |
105 | return (newmem); | |
106 | } | |
107 | ||
108 | PTR | |
109 | xcalloc (nelem, elsize) | |
110 | size_t nelem, elsize; | |
111 | { | |
112 | PTR newmem; | |
113 | ||
114 | if (nelem == 0 || elsize == 0) | |
115 | nelem = elsize = 1; | |
116 | ||
117 | newmem = calloc (nelem, elsize); | |
118 | if (!newmem) | |
119 | { | |
1198f921 | 120 | #ifdef USE_SBRK |
252b5132 RH |
121 | extern char **environ; |
122 | size_t allocated; | |
123 | ||
124 | if (first_break != NULL) | |
125 | allocated = (char *) sbrk (0) - first_break; | |
126 | else | |
127 | allocated = (char *) sbrk (0) - (char *) &environ; | |
128 | fprintf (stderr, | |
129 | "\n%s%sCan not allocate %lu bytes after allocating %lu bytes\n", | |
130 | name, *name ? ": " : "", | |
131 | (unsigned long) (nelem * elsize), (unsigned long) allocated); | |
132 | #else | |
133 | fprintf (stderr, | |
134 | "\n%s%sCan not allocate %lu bytes\n", | |
135 | name, *name ? ": " : "", | |
136 | (unsigned long) (nelem * elsize)); | |
1198f921 | 137 | #endif /* ! USE_SBRK */ |
252b5132 RH |
138 | xexit (1); |
139 | } | |
140 | return (newmem); | |
141 | } | |
142 | ||
143 | PTR | |
144 | xrealloc (oldmem, size) | |
145 | PTR oldmem; | |
146 | size_t size; | |
147 | { | |
148 | PTR newmem; | |
149 | ||
150 | if (size == 0) | |
151 | size = 1; | |
152 | if (!oldmem) | |
153 | newmem = malloc (size); | |
154 | else | |
155 | newmem = realloc (oldmem, size); | |
156 | if (!newmem) | |
157 | { | |
1198f921 | 158 | #ifdef USE_SBRK |
252b5132 RH |
159 | extern char **environ; |
160 | size_t allocated; | |
161 | ||
162 | if (first_break != NULL) | |
163 | allocated = (char *) sbrk (0) - first_break; | |
164 | else | |
165 | allocated = (char *) sbrk (0) - (char *) &environ; | |
166 | fprintf (stderr, | |
167 | "\n%s%sCan not reallocate %lu bytes after allocating %lu bytes\n", | |
168 | name, *name ? ": " : "", | |
169 | (unsigned long) size, (unsigned long) allocated); | |
170 | #else | |
171 | fprintf (stderr, | |
172 | "\n%s%sCan not reallocate %lu bytes\n", | |
173 | name, *name ? ": " : "", | |
174 | (unsigned long) size); | |
1198f921 | 175 | #endif /* ! USE_SBRK */ |
252b5132 RH |
176 | xexit (1); |
177 | } | |
178 | return (newmem); | |
179 | } |