115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
/*
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* ptw32_tkAssocDestroy.c
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*
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* Description:
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* This translation unit implements routines which are private to
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* the implementation and may be used throughout it.
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*
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* --------------------------------------------------------------------------
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*
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* Pthreads-win32 - POSIX Threads Library for Win32
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* Copyright(C) 1998 John E. Bossom
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* Copyright(C) 1999,2005 Pthreads-win32 contributors
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*
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* Contact Email: rpj@callisto.canberra.edu.au
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*
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* The current list of contributors is contained
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* in the file CONTRIBUTORS included with the source
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* code distribution. The list can also be seen at the
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* following World Wide Web location:
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* http://sources.redhat.com/pthreads-win32/contributors.html
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library in the file COPYING.LIB;
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* if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "pthread.h"
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#include "implement.h"
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void
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ptw32_tkAssocDestroy (ThreadKeyAssoc * assoc)
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/*
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* -------------------------------------------------------------------
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* This routine releases all resources for the given ThreadKeyAssoc
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* once it is no longer being referenced
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* ie) either the key or thread has stopped referencing it.
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*
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* Parameters:
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* assoc
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* an instance of ThreadKeyAssoc.
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* Returns:
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* N/A
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* -------------------------------------------------------------------
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*/
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{
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/*
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* Both key->keyLock and thread->threadLock are locked before
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* entry to this routine.
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*/
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if (assoc != NULL)
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{
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ThreadKeyAssoc * prev, * next;
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/* Remove assoc from thread's keys chain */
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prev = assoc->prevKey;
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next = assoc->nextKey;
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if (prev != NULL)
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{
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prev->nextKey = next;
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}
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if (next != NULL)
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{
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next->prevKey = prev;
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}
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if (assoc->thread->keys == assoc)
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{
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/* We're at the head of the thread's keys chain */
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assoc->thread->keys = next;
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}
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if (assoc->thread->nextAssoc == assoc)
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{
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/*
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* Thread is exiting and we're deleting the assoc to be processed next.
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* Hand thread the assoc after this one.
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*/
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assoc->thread->nextAssoc = next;
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}
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/* Remove assoc from key's threads chain */
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prev = assoc->prevThread;
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next = assoc->nextThread;
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if (prev != NULL)
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{
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prev->nextThread = next;
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}
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if (next != NULL)
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{
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next->prevThread = prev;
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}
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if (assoc->key->threads == assoc)
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{
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/* We're at the head of the key's threads chain */
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assoc->key->threads = next;
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}
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free (assoc);
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}
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} /* ptw32_tkAssocDestroy */
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