cvs version of pthreads

1 files changed, 125 insertions, 133 deletions

diff --git a/pthreads/pthread_key_delete.c b/pthreads/pthread_key_delete.c
index a92b6465f..09d70c63f 100644
--- a/pthreads/pthread_key_delete.c
+++ b/pthreads/pthread_key_delete.c
@@ -1,133 +1,125 @@
-/*

- * pthread_key_delete.c

- *

- * Description:

- * POSIX thread functions which implement thread-specific data (TSD).

- *

- * --------------------------------------------------------------------------

- *

- *      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"

-

-

-int

-pthread_key_delete (pthread_key_t key)

-     /*

-      * ------------------------------------------------------

-      * DOCPUBLIC

-      *      This function deletes a thread-specific data key. This

-      *      does not change the value of the thread specific data key

-      *      for any thread and does not run the key's destructor

-      *      in any thread so it should be used with caution.

-      *

-      * PARAMETERS

-      *      key

-      *              pointer to an instance of pthread_key_t

-      *

-      *

-      * DESCRIPTION

-      *      This function deletes a thread-specific data key. This

-      *      does not change the value of the thread specific data key

-      *      for any thread and does not run the key's destructor

-      *      in any thread so it should be used with caution.

-      *

-      * RESULTS

-      *              0               successfully deleted the key,

-      *              EINVAL          key is invalid,

-      *

-      * ------------------------------------------------------

-      */

-{

-  int result = 0;

-

-  if (key != NULL)

-    {

-      if (key->threads != NULL &&

-	  key->destructor != NULL &&

-	  pthread_mutex_lock (&(key->keyLock)) == 0)

-	{

-	  ThreadKeyAssoc *assoc;

-	  /*

-	   * Run through all Thread<-->Key associations

-	   * for this key.

-	   *

-	   * While we hold at least one of the locks guarding

-	   * the assoc, we know that the assoc pointed to by

-	   * key->threads is valid.

-	   */

-	  while ((assoc = (ThreadKeyAssoc *) key->threads) != NULL)

-	    {

-	      ptw32_thread_t * thread = assoc->thread;

-

-	      if (assoc == NULL)

-		{

-		  /* Finished */

-		  break;

-		}

-

-	      if (pthread_mutex_lock (&(thread->threadLock)) == 0)

-		{

-		  /*

-		   * Since we are starting at the head of the key's threads

-		   * chain, this will also point key->threads at the next assoc.

-		   * While we hold key->keyLock, no other thread can insert

-		   * a new assoc via pthread_setspecific.

-		   */

-		  ptw32_tkAssocDestroy (assoc);

-		  (void) pthread_mutex_unlock (&(thread->threadLock));

-		}

-	      else

-		{

-		  /* Thread or lock is no longer valid? */

-		  ptw32_tkAssocDestroy (assoc);

-		}

-	    }

-	  pthread_mutex_unlock (&(key->keyLock));

-	}

-

-      TlsFree (key->key);

-      if (key->destructor != NULL)

-	{

-	  /* A thread could be holding the keyLock */

-	  while (EBUSY == pthread_mutex_destroy (&(key->keyLock)))

-	    {

-	      Sleep(0); /* Ugly */

-	    }

-	}

-

-#if defined( _DEBUG )

-      memset ((char *) key, 0, sizeof (*key));

-#endif

-      free (key);

-    }

-

-  return (result);

-}

+/*
+ * pthread_key_delete.c
+ *
+ * Description:
+ * POSIX thread functions which implement thread-specific data (TSD).
+ *
+ * --------------------------------------------------------------------------
+ *
+ *      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"
+
+
+int
+pthread_key_delete (pthread_key_t key)
+     /*
+      * ------------------------------------------------------
+      * DOCPUBLIC
+      *      This function deletes a thread-specific data key. This
+      *      does not change the value of the thread specific data key
+      *      for any thread and does not run the key's destructor
+      *      in any thread so it should be used with caution.
+      *
+      * PARAMETERS
+      *      key
+      *              pointer to an instance of pthread_key_t
+      *
+      *
+      * DESCRIPTION
+      *      This function deletes a thread-specific data key. This
+      *      does not change the value of the thread specific data key
+      *      for any thread and does not run the key's destructor
+      *      in any thread so it should be used with caution.
+      *
+      * RESULTS
+      *              0               successfully deleted the key,
+      *              EINVAL          key is invalid,
+      *
+      * ------------------------------------------------------
+      */
+{
+  ptw32_mcs_local_node_t keyLock;
+  int result = 0;
+
+  if (key != NULL)
+    {
+      if (key->threads != NULL && key->destructor != NULL)
+	{
+	  ThreadKeyAssoc *assoc;
+	  ptw32_mcs_lock_acquire (&(key->keyLock), &keyLock);
+	  /*
+	   * Run through all Thread<-->Key associations
+	   * for this key.
+	   *
+	   * While we hold at least one of the locks guarding
+	   * the assoc, we know that the assoc pointed to by
+	   * key->threads is valid.
+	   */
+	  while ((assoc = (ThreadKeyAssoc *) key->threads) != NULL)
+	    {
+              ptw32_mcs_local_node_t threadLock;
+	      ptw32_thread_t * thread = assoc->thread;
+
+	      if (assoc == NULL)
+		{
+		  /* Finished */
+		  break;
+		}
+
+	      ptw32_mcs_lock_acquire (&(thread->threadLock), &threadLock);
+	      /*
+	       * Since we are starting at the head of the key's threads
+	       * chain, this will also point key->threads at the next assoc.
+	       * While we hold key->keyLock, no other thread can insert
+	       * a new assoc via pthread_setspecific.
+	       */
+	      ptw32_tkAssocDestroy (assoc);
+	      ptw32_mcs_lock_release (&threadLock);
+	      ptw32_mcs_lock_release (&keyLock);
+	    }
+	}
+
+      TlsFree (key->key);
+      if (key->destructor != NULL)
+	{
+	  /* A thread could be holding the keyLock */
+	  ptw32_mcs_lock_acquire (&(key->keyLock), &keyLock);
+	  ptw32_mcs_lock_release (&keyLock);
+	}
+
+#if defined( _DEBUG )
+      memset ((char *) key, 0, sizeof (*key));
+#endif
+      free (key);
+    }
+
+  return (result);
+}