mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-21 12:19:35 +08:00
114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
/* 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 sbrk PARAMS ((ptrdiff_t));
|
|
#endif
|
|
|
|
/* The program name if set. */
|
|
static const char *name = "";
|
|
|
|
/* The initial sbrk, set when the program name is set. */
|
|
static char *first_break = NULL;
|
|
|
|
void
|
|
xmalloc_set_program_name (s)
|
|
const char *s;
|
|
{
|
|
name = s;
|
|
if (first_break == NULL)
|
|
first_break = (char *) sbrk (0);
|
|
}
|
|
|
|
PTR
|
|
xmalloc (size)
|
|
size_t size;
|
|
{
|
|
PTR newmem;
|
|
|
|
if (size == 0)
|
|
size = 1;
|
|
newmem = malloc (size);
|
|
if (!newmem)
|
|
{
|
|
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);
|
|
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)
|
|
{
|
|
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);
|
|
xexit (1);
|
|
}
|
|
return (newmem);
|
|
}
|