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.

---
 ptw32_callUserDestroyRoutines.c | 155 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 155 insertions(+)
 create mode 100644 ptw32_callUserDestroyRoutines.c

(limited to 'ptw32_callUserDestroyRoutines.c')

diff --git a/ptw32_callUserDestroyRoutines.c b/ptw32_callUserDestroyRoutines.c
new file mode 100644
index 0000000..cef88cf
--- /dev/null
+++ b/ptw32_callUserDestroyRoutines.c
@@ -0,0 +1,155 @@
+/*
+ * ptw32_callUserDestroyRoutines.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) 1999,2002 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"
+
+
+void
+ptw32_callUserDestroyRoutines (pthread_t thread)
+     /*
+      * -------------------------------------------------------------------
+      * DOCPRIVATE
+      *
+      * This the routine runs through all thread keys and calls
+      * the destroy routines on the user's data for the current thread.
+      * It simulates the behaviour of POSIX Threads.
+      *
+      * PARAMETERS
+      * 	     thread
+      * 		     an instance of pthread_t
+      *
+      * RETURNS
+      * 	     N/A
+      * -------------------------------------------------------------------
+      */
+{
+  ThreadKeyAssoc **nextP;
+  ThreadKeyAssoc *assoc;
+
+  if (thread != NULL)
+    {
+      /*
+       * Run through all Thread<-->Key associations
+       * for the current thread.
+       * If the pthread_key_t still exits (ie the assoc->key
+       * is not NULL) then call the user's TSD destroy routine.
+       * Notes:
+       *      If assoc->key is NULL, then the user previously called
+       *      PThreadKeyDestroy. The association is now only referenced
+       *      by the current thread and must be released; otherwise
+       *      the assoc will be destroyed when the key is destroyed.
+       */
+      nextP = (ThreadKeyAssoc **) & (thread->keys);
+      assoc = *nextP;
+
+      while (assoc != NULL)
+	{
+
+	  if (pthread_mutex_lock (&(assoc->lock)) == 0)
+	    {
+	      pthread_key_t k;
+	      if ((k = assoc->key) != NULL)
+		{
+		  /*
+		   * Key still active; pthread_key_delete
+		   * will block on this same mutex before
+		   * it can release actual key; therefore,
+		   * key is valid and we can call the destroy
+		   * routine;
+		   */
+		  void *value = NULL;
+
+		  value = pthread_getspecific (k);
+		  if (value != NULL && k->destructor != NULL)
+		    {
+
+#ifdef __cplusplus
+
+		      try
+		      {
+			/*
+			 * Run the caller's cleanup routine.
+			 */
+			(*(k->destructor)) (value);
+		      }
+		      catch (...)
+		      {
+			/*
+			 * A system unexpected exception has occurred
+			 * running the user's destructor.
+			 * We get control back within this block in case
+			 * the application has set up it's own terminate
+			 * handler. Since we are leaving the thread we
+			 * should not get any internal pthreads
+			 * exceptions.
+			 */
+			terminate();
+		      }
+
+#else  /* __cplusplus */
+
+			/*
+			 * Run the caller's cleanup routine.
+			 */
+			(*(k->destructor)) (value);
+
+#endif /* __cplusplus */
+		    }
+		}
+
+	      /*
+	       * mark assoc->thread as NULL to indicate the
+	       * thread no longer references this association
+	       */
+	      assoc->thread = NULL;
+
+	      /*
+	       * Remove association from the pthread_t chain
+	       */
+	      *nextP = assoc->nextKey;
+
+	      pthread_mutex_unlock (&(assoc->lock));
+
+	      ptw32_tkAssocDestroy (assoc);
+
+	      assoc = *nextP;
+	    }
+	}
+    }
+
+}				/* ptw32_callUserDestroyRoutines */
-- 
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