From a416ab17ecf9f2cb0f1e3f7bd645a8d1ce690ca2 Mon Sep 17 00:00:00 2001
From: rpj <rpj>
Date: Mon, 18 Feb 2002 03:16:52 +0000
Subject: Major reorganisation of source code; new routine and tests added.

---
 pthread_key_delete.c | 127 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 pthread_key_delete.c

(limited to 'pthread_key_delete.c')

diff --git a/pthread_key_delete.c b/pthread_key_delete.c
new file mode 100644
index 0000000..0fb3fbb
--- /dev/null
+++ b/pthread_key_delete.c
@@ -0,0 +1,127 @@
+/*
+ * 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) 1999,2002 Pthreads-win32 contributors
+ * 
+ *      Contact Email: rpj@ise.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 spcific 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 spcific 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->threadsLock)) == 0)
+        {
+          /*
+           * Run through all Thread<-->Key associations
+           * for this key.
+           * If the pthread_t still exits (ie the assoc->thread
+           * is not NULL) then leave the assoc for the thread to
+           * destroy.
+           * Notes:
+           *      If assoc->thread is NULL, then the associated thread
+           *      is no longer referencing this assoc.
+           *      The association is only referenced
+           *      by this key and must be released; otherwise
+           *      the assoc will be destroyed when the thread is destroyed.
+           */
+          ThreadKeyAssoc *assoc;
+
+          assoc = (ThreadKeyAssoc *) key->threads;
+
+          while (assoc != NULL)
+            {
+              if (pthread_mutex_lock (&(assoc->lock)) == 0)
+                {
+                  ThreadKeyAssoc *next;
+
+                  assoc->key = NULL;
+                  next = assoc->nextThread;
+                  assoc->nextThread = NULL;
+
+                  pthread_mutex_unlock (&(assoc->lock));
+
+                  ptw32_tkAssocDestroy (assoc);
+
+                  assoc = next;
+                }
+            }
+          pthread_mutex_unlock (&(key->threadsLock));
+        }
+
+      TlsFree (key->key);
+      if (key->destructor != NULL)
+        {
+          pthread_mutex_destroy (&(key->threadsLock));
+        }
+
+#if defined( _DEBUG )
+      memset ((char *) key, 0, sizeof (*key));
+#endif
+      free (key);
+    }
+
+  return (result);
+}
-- 
cgit v1.2.3