| 1 | /* memory allocation routines with error checking. |
| 2 | Copyright 1989, 90, 91, 92, 93, 94 Free Software Foundation, Inc. |
| 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 | #ifdef HAVE_SBRK |
| 47 | /* The initial sbrk, set when the program name is set. Not used for win32 |
| 48 | ports other than cygwin32. */ |
| 49 | static char *first_break = NULL; |
| 50 | #endif /* HAVE_SBRK */ |
| 51 | |
| 52 | void |
| 53 | xmalloc_set_program_name (s) |
| 54 | const char *s; |
| 55 | { |
| 56 | name = s; |
| 57 | #ifdef HAVE_SBRK |
| 58 | /* Win32 ports other than cygwin32 don't have brk() */ |
| 59 | if (first_break == NULL) |
| 60 | first_break = (char *) sbrk (0); |
| 61 | #endif /* HAVE_SBRK */ |
| 62 | } |
| 63 | |
| 64 | PTR |
| 65 | xmalloc (size) |
| 66 | size_t size; |
| 67 | { |
| 68 | PTR newmem; |
| 69 | |
| 70 | if (size == 0) |
| 71 | size = 1; |
| 72 | newmem = malloc (size); |
| 73 | if (!newmem) |
| 74 | { |
| 75 | #ifdef HAVE_SBRK |
| 76 | extern char **environ; |
| 77 | size_t allocated; |
| 78 | |
| 79 | if (first_break != NULL) |
| 80 | allocated = (char *) sbrk (0) - first_break; |
| 81 | else |
| 82 | allocated = (char *) sbrk (0) - (char *) &environ; |
| 83 | fprintf (stderr, |
| 84 | "\n%s%sCannot allocate %lu bytes after allocating %lu bytes\n", |
| 85 | name, *name ? ": " : "", |
| 86 | (unsigned long) size, (unsigned long) allocated); |
| 87 | #else /* HAVE_SBRK */ |
| 88 | fprintf (stderr, |
| 89 | "\n%s%sCannot allocate %lu bytes\n", |
| 90 | name, *name ? ": " : "", |
| 91 | (unsigned long) size); |
| 92 | #endif /* HAVE_SBRK */ |
| 93 | xexit (1); |
| 94 | } |
| 95 | return (newmem); |
| 96 | } |
| 97 | |
| 98 | PTR |
| 99 | xcalloc (nelem, elsize) |
| 100 | size_t nelem, elsize; |
| 101 | { |
| 102 | PTR newmem; |
| 103 | |
| 104 | if (nelem == 0 || elsize == 0) |
| 105 | nelem = elsize = 1; |
| 106 | |
| 107 | newmem = calloc (nelem, elsize); |
| 108 | if (!newmem) |
| 109 | { |
| 110 | #ifdef HAVE_SBRK |
| 111 | extern char **environ; |
| 112 | size_t allocated; |
| 113 | |
| 114 | if (first_break != NULL) |
| 115 | allocated = (char *) sbrk (0) - first_break; |
| 116 | else |
| 117 | allocated = (char *) sbrk (0) - (char *) &environ; |
| 118 | fprintf (stderr, |
| 119 | "\n%s%sCannot allocate %lu bytes after allocating %lu bytes\n", |
| 120 | name, *name ? ": " : "", |
| 121 | (unsigned long) (nelem * elsize), (unsigned long) allocated); |
| 122 | #else /* HAVE_SBRK */ |
| 123 | fprintf (stderr, |
| 124 | "\n%s%sCannot allocate %lu bytes\n", |
| 125 | name, *name ? ": " : "", |
| 126 | (unsigned long) (nelem * elsize)); |
| 127 | #endif /* HAVE_SBRK */ |
| 128 | xexit (1); |
| 129 | } |
| 130 | return (newmem); |
| 131 | } |
| 132 | |
| 133 | PTR |
| 134 | xrealloc (oldmem, size) |
| 135 | PTR oldmem; |
| 136 | size_t size; |
| 137 | { |
| 138 | PTR newmem; |
| 139 | |
| 140 | if (size == 0) |
| 141 | size = 1; |
| 142 | if (!oldmem) |
| 143 | newmem = malloc (size); |
| 144 | else |
| 145 | newmem = realloc (oldmem, size); |
| 146 | if (!newmem) |
| 147 | { |
| 148 | #ifdef HAVE_SBRK |
| 149 | extern char **environ; |
| 150 | size_t allocated; |
| 151 | |
| 152 | if (first_break != NULL) |
| 153 | allocated = (char *) sbrk (0) - first_break; |
| 154 | else |
| 155 | allocated = (char *) sbrk (0) - (char *) &environ; |
| 156 | fprintf (stderr, |
| 157 | "\n%s%sCannot reallocate %lu bytes after allocating %lu bytes\n", |
| 158 | name, *name ? ": " : "", |
| 159 | (unsigned long) size, (unsigned long) allocated); |
| 160 | #else /* HAVE_SBRK */ |
| 161 | fprintf (stderr, |
| 162 | "\n%s%sCannot reallocate %lu bytes\n", |
| 163 | name, *name ? ": " : "", |
| 164 | (unsigned long) size); |
| 165 | #endif /* HAVE_SBRK */ |
| 166 | xexit (1); |
| 167 | } |
| 168 | return (newmem); |
| 169 | } |