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authorrpj <rpj>2002-02-18 03:16:52 +0000
committerrpj <rpj>2002-02-18 03:16:52 +0000
commita416ab17ecf9f2cb0f1e3f7bd645a8d1ce690ca2 (patch)
tree72f776cd64e48824a5578ff7a523bc69097143b4 /ptw32_callUserDestroyRoutines.c
parente6f1797e9e9925ae7f9dda54806ef8f52ae3ed07 (diff)
Major reorganisation of source code; new routine and tests added.
Diffstat (limited to 'ptw32_callUserDestroyRoutines.c')
-rw-r--r--ptw32_callUserDestroyRoutines.c155
1 files changed, 155 insertions, 0 deletions
diff --git a/ptw32_callUserDestroyRoutines.c b/ptw32_callUserDestroyRoutines.c
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+/*
+ * 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 */