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-rw-r--r--pthreads/pthread_key_delete.c258
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);
+}
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