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/* memory allocation routines with error checking.
Copyright 1989, 90, 91, 92, 93, 94, 1999 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 = "";
#if !defined (__CYGWIN__) && defined (__CYGWIN32__)
#define __CYGWIN__ 1
#endif
/* On Unix systems we use sbrk to determine how much memory has been
allocated. */
#undef USE_SBRK
#if (! defined (_WIN32) && ! defined (__INTERIX)) || defined (__CYGWIN__) || defined (__UWIN__)
#define USE_SBRK
#endif
#ifdef USE_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
void
xmalloc_set_program_name (s)
const char *s;
{
name = s;
#ifdef USE_SBRK
if (first_break == NULL)
first_break = (char *) sbrk (0);
#endif
}
PTR
xmalloc (size)
size_t size;
{
PTR newmem;
if (size == 0)
size = 1;
newmem = malloc (size);
if (!newmem)
{
#ifdef USE_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
fprintf (stderr,
"\n%s%sCan not allocate %lu bytes\n",
name, *name ? ": " : "",
(unsigned long) size);
#endif /* ! USE_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 USE_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
fprintf (stderr,
"\n%s%sCan not allocate %lu bytes\n",
name, *name ? ": " : "",
(unsigned long) (nelem * elsize));
#endif /* ! USE_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 USE_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
fprintf (stderr,
"\n%s%sCan not reallocate %lu bytes\n",
name, *name ? ": " : "",
(unsigned long) size);
#endif /* ! USE_SBRK */
xexit (1);
}
return (newmem);
}
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