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+/*
+ * ptw32_tkAssocDestroy.c
+ *
+ * Description:
+ * This translation unit implements routines which are private to
+ * the implementation and may be used throughout it.
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Pthreads-win32 - POSIX Threads Library for Win32
+ * Copyright(C) 1998 John E. Bossom
+ * Copyright(C) 1999,2005 Pthreads-win32 contributors
+ *
+ * Contact Email: rpj@callisto.canberra.edu.au
+ *
+ * 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:
+ * http://sources.redhat.com/pthreads-win32/contributors.html
+ *
+ * This 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 of the License, or (at your option) any later version.
+ *
+ * This 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 this library in the file COPYING.LIB;
+ * if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#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 on
+ * 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 */