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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/detach.c
parent1730ec6b1848f0f32154277f788fb29f88d8475b (diff)
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Initial creation of sourceware repository
Diffstat (limited to 'mmalloc/detach.c')
-rw-r--r--mmalloc/detach.c71
1 files changed, 0 insertions, 71 deletions
diff --git a/mmalloc/detach.c b/mmalloc/detach.c
deleted file mode 100644
index 69661bc..0000000
--- a/mmalloc/detach.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/* Finish access to a 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. */
-
-
-#include <fcntl.h>
-#include "mmalloc.h"
-
-/* Terminate access to a mmalloc managed region by unmapping all memory pages
- associated with the region, and closing the file descriptor if it is one
- that we opened.
-
- Returns NULL on success.
-
- Returns the malloc descriptor on failure, which can subsequently be used
- for further action, such as obtaining more information about the nature of
- the failure by examining the preserved errno value.
-
- Note that the malloc descriptor that we are using is currently located in
- region we are about to unmap, so we first make a local copy of it on the
- stack and use the copy. */
-
-PTR
-mmalloc_detach (md)
- void *md;
-{
- struct mdesc mtemp;
-
- if (md != NULL)
- {
-
- mtemp = *(struct mdesc *) md;
-
- /* Now unmap all the pages associated with this region by asking for a
- negative increment equal to the current size of the region. */
-
- if ((mtemp.morecore (&mtemp, mtemp.base - mtemp.top)) == NULL)
- {
- /* Update the original malloc descriptor with any changes */
- *(struct mdesc *) md = mtemp;
- }
- else
- {
- if (mtemp.flags & MMALLOC_DEVZERO)
- {
- (void) close (mtemp.fd);
- }
- md = NULL;
- }
- }
-
- return (md);
-}
-
-
-