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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:34:07 +0000
commit071ea11e85eb9d529cc5eb3d35f6247466a21b99 (patch)
tree5deda65b8d7b04d1f4cbc534c3206d328e1267ec /mmalloc/keys.c
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
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Initial creation of sourceware repository
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-rw-r--r--mmalloc/keys.c64
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diff --git a/mmalloc/keys.c b/mmalloc/keys.c
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-/* 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);
-}