From 78f83cfa240ec14874b22c7302ff8d306c130aaf Mon Sep 17 00:00:00 2001
From: rpj <rpj>
Date: Fri, 6 May 2005 07:31:28 +0000
Subject: ''

---
 ptw32_tkAssocCreate.c | 60 ++++++++++++++++++---------------------------------
 1 file changed, 21 insertions(+), 39 deletions(-)

(limited to 'ptw32_tkAssocCreate.c')

diff --git a/ptw32_tkAssocCreate.c b/ptw32_tkAssocCreate.c
index f159408..10d6527 100644
--- a/ptw32_tkAssocCreate.c
+++ b/ptw32_tkAssocCreate.c
@@ -41,7 +41,7 @@
 
 int
 ptw32_tkAssocCreate (ThreadKeyAssoc ** assocP,
-		     pthread_t thread, pthread_key_t key)
+		     ptw32_thread_t * sp, pthread_key_t key)
      /*
       * -------------------------------------------------------------------
       * This routine creates an association that
@@ -57,16 +57,14 @@ ptw32_tkAssocCreate (ThreadKeyAssoc ** assocP,
       *      1)      New associations are pushed to the beginning of the
       *              chain so that the internal ptw32_selfThreadKey association
       *              is always last, thus allowing selfThreadExit to
-      *              be implicitly called by pthread_exit last.
+      *              be implicitly called last by pthread_exit.
+      *      2)      
       *
       * Parameters:
       *              assocP
       *                      address into which the association is returned.
       *              thread
-      *                      current running thread. If NULL, then association
-      *                      is only added to the key. A NULL thread indicates
-      *                      that the user called pthread_setspecific prior
-      *                      to starting a thread. That's ok.
+      *                      current running thread.
       *              key
       *                      key on which to create an association.
       * Returns:
@@ -77,65 +75,49 @@ ptw32_tkAssocCreate (ThreadKeyAssoc ** assocP,
       * -------------------------------------------------------------------
       */
 {
-  int result;
   ThreadKeyAssoc *assoc;
 
   /*
    * Have to create an association and add it
    * to both the key and the thread.
+   *
+   * Both key->keyLock and thread->threadLock are locked on
+   * entry to this routine.
    */
   assoc = (ThreadKeyAssoc *) calloc (1, sizeof (*assoc));
 
   if (assoc == NULL)
     {
-      result = ENOMEM;
-      goto FAIL0;
+      return ENOMEM;
     }
 
-  /*
-   * Initialise only when used for the first time.
-   */
-  assoc->lock = PTHREAD_MUTEX_INITIALIZER;
-  assoc->thread = thread;
+  assoc->thread = sp;
   assoc->key = key;
 
   /*
    * Register assoc with key
    */
-  if ((result = pthread_mutex_lock (&(key->threadsLock))) != 0)
+  if (key->threads != NULL)
     {
-      goto FAIL2;
+      ((ThreadKeyAssoc *)key->threads)->prevThread = assoc;
     }
-
   assoc->nextThread = (ThreadKeyAssoc *) key->threads;
+  assoc->prevThread = NULL;
   key->threads = (void *) assoc;
 
-  pthread_mutex_unlock (&(key->threadsLock));
-
-  if (thread.p != NULL)
+  /*
+   * Register assoc with thread
+   */
+  if (sp->keys != NULL)
     {
-      /*
-       * Register assoc with thread
-       */
-      assoc->nextKey = (ThreadKeyAssoc *) ((ptw32_thread_t *)thread.p)->keys;
-      ((ptw32_thread_t *)thread.p)->keys = (void *) assoc;
+      ((ThreadKeyAssoc *)sp->keys)->prevKey = assoc;
     }
+  assoc->nextKey = (ThreadKeyAssoc *) sp->keys;
+  assoc->prevKey = NULL;
+  sp->keys = (void *) assoc;
 
   *assocP = assoc;
 
-  return (result);
-
-  /*
-   * -------------
-   * Failure Code
-   * -------------
-   */
-FAIL2:
-  pthread_mutex_destroy (&(assoc->lock));
-  free (assoc);
-
-FAIL0:
-
-  return (result);
+  return (0);
 
 }				/* ptw32_tkAssocCreate */
-- 
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