/*
* ptw32_tkAssocDestroy.c
*
* Description:
* This translation unit implements routines which are private to
* the implementation and may be used throughout it.
*
* --------------------------------------------------------------------------
*
* Pthreads4w - POSIX Threads for Windows
* Copyright 1998 John E. Bossom
* Copyright 1999-2018, Pthreads4w contributors
*
* Homepage: https://sourceforge.net/projects/pthreads4w/
*
* The current list of contributors is contained
* in the file CONTRIBUTORS included with the source
* code distribution. The list can also be seen at the
* following World Wide Web location:
*
* https://sourceforge.net/p/pthreads4w/wiki/Contributors/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "pthread.h"
#include "implement.h"
void
__ptw32_tkAssocDestroy (ThreadKeyAssoc * assoc)
/*
* -------------------------------------------------------------------
* This routine releases all resources for the given ThreadKeyAssoc
* once it is no longer being referenced
* ie) either the key or thread has stopped referencing it.
*
* Parameters:
* assoc
* an instance of ThreadKeyAssoc.
* Returns:
* N/A
* -------------------------------------------------------------------
*/
{
/*
* Both key->keyLock and thread->threadLock are locked before
* entry to this routine.
*/
if (assoc != NULL)
{
ThreadKeyAssoc * prev, * next;
/* Remove assoc from thread's keys chain */
prev = assoc->prevKey;
next = assoc->nextKey;
if (prev != NULL)
{
prev->nextKey = next;
}
if (next != NULL)
{
next->prevKey = prev;
}
if (assoc->thread->keys == assoc)
{
/* We're at the head of the thread's keys chain */
assoc->thread->keys = next;
}
if (assoc->thread->nextAssoc == assoc)
{
/*
* Thread is exiting and we're deleting the assoc to be processed next.
* Hand thread the assoc after this one.
*/
assoc->thread->nextAssoc = next;
}
/* Remove assoc from key's threads chain */
prev = assoc->prevThread;
next = assoc->nextThread;
if (prev != NULL)
{
prev->nextThread = next;
}
if (next != NULL)
{
next->prevThread = prev;
}
if (assoc->key->threads == assoc)
{
/* We're at the head of the key's threads chain */
assoc->key->threads = next;
}
free (assoc);
}
} /* __ptw32_tkAssocDestroy */
