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160 lines
3.3 KiB
C
160 lines
3.3 KiB
C
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/* GDB support for special malloc using mmap.
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Copyright 1992 Free Software Foundation, Inc.
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Contributed by Cygnus Support, using pieces from other GDB modules.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "defs.h"
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#if defined (HAVE_MMAP)
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/* Redefine the external visible symbols in gmalloc.c to be mmap versions */
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#define free _mmap_free
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#define malloc _mmap_malloc
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#define realloc _mmap_realloc
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#define valloc _mmap_valloc
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#define _bytes_free _mmap__bytes_free
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#define _bytes_used _mmap__bytes_used
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#define _chunks_free _mmap__chunks_free
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#define _chunks_used _mmap__chunks_used
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#define _fraghead _mmap__fraghead
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#define _heapbase _mmap__heapbase
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#define _heapindex _mmap__heapindex
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#define _heapinfo _mmap__heapinfo
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#define _heaplimit _mmap__heaplimit
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#define __default_morecore _mmap___default_morecore
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#define __free _mmap___free
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#define __free_hook _mmap___free_hook
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#define __malloc_hook _mmap___malloc_hook
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#define __malloc_initialized _mmap___malloc_initialized
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#define __morecore _mmap___morecore
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#define __realloc_hook _mmap___realloc_hook
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/* Arrange that instead of calling sbrk() we call mmap_sbrk() */
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#define sbrk mmap_sbrk
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/* Now simply include the standard GNU malloc source, and all the
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externally visible symbols will become _mmap_* versions, and
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_mmap_sbrk will be called to get more core instead of sbrk. */
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#include "gmalloc.c"
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/* Like mmap_malloc but get error if no storage available. */
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PTR
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mmap_xmalloc (size)
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long size;
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{
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register char *val = NULL;
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/* Protect against gdb wanting to allocate zero bytes. */
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if (size > 0)
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{
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if ((val = (char *) _mmap_malloc (size)) == NULL)
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{
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fatal ("virtual memory exhausted.", 0);
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}
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}
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return (val);
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}
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/* Like mmap_realloc but get error if no storage available. */
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PTR
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mmap_xrealloc (ptr, size)
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PTR ptr;
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long size;
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{
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register char *val;
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if ((val = (char *) _mmap_realloc (ptr, size)) == NULL)
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{
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fatal ("virtual memory exhausted.", 0);
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}
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return (val);
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}
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PTR
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mmap_malloc (size)
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long size;
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{
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return (_mmap_malloc (size));
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}
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PTR
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mmap_realloc (ptr, size)
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PTR ptr;
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long size;
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{
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return (_mmap_realloc (ptr, size));
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}
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void
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mmap_free (ptr)
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PTR ptr;
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{
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_mmap_free (ptr);
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}
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#else /* !defined (HAVE_MMAP) */
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static char *errmsg = "This version of gdb does not support dumpable state.";
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PTR
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mmap_malloc (size)
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long size;
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{
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error (errmsg);
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}
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PTR
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mmap_xmalloc (size)
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long size;
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{
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error (errmsg);
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}
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PTR
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mmap_realloc (ptr, size)
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PTR ptr;
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long size;
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{
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error (errmsg);
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}
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PTR
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mmap_xrealloc (ptr, size)
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PTR ptr;
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long size;
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{
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error (errmsg);
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}
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void
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mmap_free (ptr)
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PTR ptr;
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{
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error (errmsg);
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}
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#endif /* HAVE_MMAP */
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