mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-12-11 14:14:23 +00:00
65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
|
/* Access for application keys in mmap'd malloc managed region.
|
||
|
|
Copyright 1992 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
Contributed by Fred Fish at Cygnus Support. fnf@cygnus.com
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License as published by
|
||
|
|
the Free Software Foundation; either version 2 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
This program 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 General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program; if not, write to the Free Software
|
||
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
|
|
||
|
|
|
||
|
|
/* This module provides access to some keys that the application can use to
|
||
|
|
provide persistent access to locations in the mapped memory section.
|
||
|
|
The intent is that these keys are to be used sparingly as sort of
|
||
|
|
persistent global variables which the application can use to reinitialize
|
||
|
|
access to data in the mapped region.
|
||
|
|
|
||
|
|
For the moment, these keys are simply stored in the malloc descriptor
|
||
|
|
itself, in an array of fixed length. This should be fixed so that there
|
||
|
|
can be an unlimited number of keys, possibly using a multilevel access
|
||
|
|
scheme of some sort. */
|
||
|
|
|
||
|
|
#include "mmalloc.h"
|
||
|
|
|
||
|
|
int
|
||
|
|
mmalloc_setkey (md, keynum, key)
|
||
|
|
PTR md;
|
||
|
|
int keynum;
|
||
|
|
PTR key;
|
||
|
|
{
|
||
|
|
struct mdesc *mdp = (struct mdesc *) md;
|
||
|
|
int result = 0;
|
||
|
|
|
||
|
|
if ((mdp != NULL) && (keynum >= 0) && (keynum < MMALLOC_KEYS))
|
||
|
|
{
|
||
|
|
mdp -> keys [keynum] = key;
|
||
|
|
result++;
|
||
|
|
}
|
||
|
|
return (result);
|
||
|
|
}
|
||
|
|
|
||
|
|
PTR
|
||
|
|
mmalloc_getkey (md, keynum)
|
||
|
|
PTR md;
|
||
|
|
int keynum;
|
||
|
|
{
|
||
|
|
struct mdesc *mdp = (struct mdesc *) md;
|
||
|
|
PTR keyval = NULL;
|
||
|
|
|
||
|
|
if ((mdp != NULL) && (keynum >= 0) && (keynum < MMALLOC_KEYS))
|
||
|
|
{
|
||
|
|
keyval = mdp -> keys [keynum];
|
||
|
|
}
|
||
|
|
return (keyval);
|
||
|
|
}
|