diff options
author | Eric Andersen <andersen@codepoet.org> | 2005-05-20 19:02:51 +0000 |
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committer | Eric Andersen <andersen@codepoet.org> | 2005-05-20 19:02:51 +0000 |
commit | 124af9f4b2b77b1510d88cfc8092c788d7e513c7 (patch) | |
tree | ccce720bef4c1c604417e2082cf9997a8d6dd7ab /libpthread/nptl/sem_close.c | |
parent | 8028f35dbe29c5ace3883005e08ac91d873553b2 (diff) |
Back out nptl changes, which for now will be done in branches/uClibc-nptl
Diffstat (limited to 'libpthread/nptl/sem_close.c')
-rw-r--r-- | libpthread/nptl/sem_close.c | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/libpthread/nptl/sem_close.c b/libpthread/nptl/sem_close.c deleted file mode 100644 index 279522d08..000000000 --- a/libpthread/nptl/sem_close.c +++ /dev/null @@ -1,81 +0,0 @@ -/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <errno.h> -#include <search.h> -#include <sys/mman.h> -#include "semaphoreP.h" - - -/* Global variables to parametrize the walk function. This works - since we always have to use locks. And we have to use the twalk - function since the entries are not sorted wrt the mapping - address. */ -static sem_t *the_sem; -static struct inuse_sem *rec; - -static void -walker (const void *inodep, const VISIT which, const int depth) -{ - struct inuse_sem *nodep = *(struct inuse_sem **) inodep; - - if (nodep->sem == the_sem) - rec = nodep; -} - - -int -sem_close (sem) - sem_t *sem; -{ - int result = 0; - - /* Get the lock. */ - lll_lock (__sem_mappings_lock); - - /* Locate the entry for the mapping the caller provided. */ - rec = NULL; - the_sem = sem; - twalk (__sem_mappings, walker); - if (rec != NULL) - { - /* Check the reference counter. If it is going to be zero, free - all the resources. */ - if (--rec->refcnt == 0) - { - /* Remove the record from the tree. */ - (void) tdelete (rec, &__sem_mappings, __sem_search); - - result = munmap (rec->sem, sizeof (sem_t)); - - free (rec); - } - } - else - { - /* This is no valid semaphore. */ - result = -1; - __set_errno (EINVAL); - } - - /* Release the lock. */ - lll_unlock (__sem_mappings_lock); - - return result; -} |