aboutsummaryrefslogtreecommitdiff
path: root/libiberty/xmalloc.c
blob: be25c5aca190f201268bf6acea6eb42e99334d43 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
/* memory allocation routines with error checking.
   Copyright 1989, 90, 91, 92, 93, 94 Free Software Foundation, Inc.
   
This file is part of the libiberty library.
Libiberty is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.

Libiberty is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with libiberty; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#include "ansidecl.h"
#include "libiberty.h"

#include <stdio.h>

#ifdef __STDC__
#include <stddef.h>
#else
#define size_t unsigned long
#define ptrdiff_t long
#endif

#if VMS
#include <stdlib.h>
#include <unixlib.h>
#else
/* For systems with larger pointers than ints, these must be declared.  */
PTR malloc PARAMS ((size_t));
PTR realloc PARAMS ((PTR, size_t));
PTR calloc PARAMS ((size_t, size_t));
PTR sbrk PARAMS ((ptrdiff_t));
#endif

/* The program name if set.  */
static const char *name = "";

#ifdef HAVE_SBRK
/* The initial sbrk, set when the program name is set. Not used for win32
   ports other than cygwin32.  */
static char *first_break = NULL;
#endif /* HAVE_SBRK */

void
xmalloc_set_program_name (s)
     const char *s;
{
  name = s;
#ifdef HAVE_SBRK
  /* Win32 ports other than cygwin32 don't have brk() */
  if (first_break == NULL)
    first_break = (char *) sbrk (0);
#endif /* HAVE_SBRK */
}

PTR
xmalloc (size)
    size_t size;
{
  PTR newmem;

  if (size == 0)
    size = 1;
  newmem = malloc (size);
  if (!newmem)
    {
#ifdef HAVE_SBRK
      extern char **environ;
      size_t allocated;

      if (first_break != NULL)
	allocated = (char *) sbrk (0) - first_break;
      else
	allocated = (char *) sbrk (0) - (char *) &environ;
      fprintf (stderr,
	       "\n%s%sCan not allocate %lu bytes after allocating %lu bytes\n",
	       name, *name ? ": " : "",
	       (unsigned long) size, (unsigned long) allocated);
#else /* HAVE_SBRK */
      fprintf (stderr,
              "\n%s%sCan not allocate %lu bytes\n",
              name, *name ? ": " : "",
              (unsigned long) size);
#endif /* HAVE_SBRK */
      xexit (1);
    }
  return (newmem);
}

PTR
xcalloc (nelem, elsize)
  size_t nelem, elsize;
{
  PTR newmem;

  if (nelem == 0 || elsize == 0)
    nelem = elsize = 1;

  newmem = calloc (nelem, elsize);
  if (!newmem)
    {
#ifdef HAVE_SBRK
      extern char **environ;
      size_t allocated;

      if (first_break != NULL)
	allocated = (char *) sbrk (0) - first_break;
      else
	allocated = (char *) sbrk (0) - (char *) &environ;
      fprintf (stderr,
	       "\n%s%sCan not allocate %lu bytes after allocating %lu bytes\n",
	       name, *name ? ": " : "",
	       (unsigned long) (nelem * elsize), (unsigned long) allocated);
#else /* HAVE_SBRK */
      fprintf (stderr,
              "\n%s%sCan not allocate %lu bytes\n",
              name, *name ? ": " : "",
              (unsigned long) (nelem * elsize));
#endif /* HAVE_SBRK */
      xexit (1);
    }
  return (newmem);
}

PTR
xrealloc (oldmem, size)
    PTR oldmem;
    size_t size;
{
  PTR newmem;

  if (size == 0)
    size = 1;
  if (!oldmem)
    newmem = malloc (size);
  else
    newmem = realloc (oldmem, size);
  if (!newmem)
    {
#ifdef HAVE_SBRK
      extern char **environ;
      size_t allocated;

      if (first_break != NULL)
	allocated = (char *) sbrk (0) - first_break;
      else
	allocated = (char *) sbrk (0) - (char *) &environ;
      fprintf (stderr,
	       "\n%s%sCan not reallocate %lu bytes after allocating %lu bytes\n",
	       name, *name ? ": " : "",
	       (unsigned long) size, (unsigned long) allocated);
#else /* HAVE_SBRK */
      fprintf (stderr,
              "\n%s%sCan not reallocate %lu bytes\n",
              name, *name ? ": " : "",
              (unsigned long) size);
#endif /* HAVE_SBRK */
      xexit (1);
    }
  return (newmem);
}