From 071ea11e85eb9d529cc5eb3d35f6247466a21b99 Mon Sep 17 00:00:00 2001 From: Stan Shebs Date: Fri, 16 Apr 1999 01:34:07 +0000 Subject: Initial creation of sourceware repository --- mmalloc/detach.c | 71 -------------------------------------------------------- 1 file changed, 71 deletions(-) delete mode 100644 mmalloc/detach.c (limited to 'mmalloc/detach.c') 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 -#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); -} - - - -- cgit v1.1