zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libpthread/nptl/pthread_cond_destroy.c b/ap/build/uClibc/libpthread/nptl/pthread_cond_destroy.c
new file mode 100644
index 0000000..cb49ce1
--- /dev/null
+++ b/ap/build/uClibc/libpthread/nptl/pthread_cond_destroy.c
@@ -0,0 +1,84 @@
+/* Copyright (C) 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ The GNU C 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 2.1 of the License, or (at your option) any later version.
+
+ The GNU C 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 the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <errno.h>
+#include "pthreadP.h"
+
+
+int
+attribute_protected
+__pthread_cond_destroy (
+ pthread_cond_t *cond)
+{
+ int pshared = (cond->__data.__mutex == (void *) ~0l)
+ ? LLL_SHARED : LLL_PRIVATE;
+
+ /* Make sure we are alone. */
+ lll_lock (cond->__data.__lock, pshared);
+
+ if (cond->__data.__total_seq > cond->__data.__wakeup_seq)
+ {
+ /* If there are still some waiters which have not been
+ woken up, this is an application bug. */
+ lll_unlock (cond->__data.__lock, pshared);
+ return EBUSY;
+ }
+
+ /* Tell pthread_cond_*wait that this condvar is being destroyed. */
+ cond->__data.__total_seq = -1ULL;
+
+ /* If there are waiters which have been already signalled or
+ broadcasted, but still are using the pthread_cond_t structure,
+ pthread_cond_destroy needs to wait for them. */
+ unsigned int nwaiters = cond->__data.__nwaiters;
+
+ if (nwaiters >= (1 << COND_NWAITERS_SHIFT))
+ {
+ /* Wake everybody on the associated mutex in case there are
+ threads that have been requeued to it.
+ Without this, pthread_cond_destroy could block potentially
+ for a long time or forever, as it would depend on other
+ thread's using the mutex.
+ When all threads waiting on the mutex are woken up, pthread_cond_wait
+ only waits for threads to acquire and release the internal
+ condvar lock. */
+ if (cond->__data.__mutex != NULL
+ && cond->__data.__mutex != (void *) ~0l)
+ {
+ pthread_mutex_t *mut = (pthread_mutex_t *) cond->__data.__mutex;
+ lll_futex_wake (&mut->__data.__lock, INT_MAX,
+ PTHREAD_MUTEX_PSHARED (mut));
+ }
+
+ do
+ {
+ lll_unlock (cond->__data.__lock, pshared);
+
+ lll_futex_wait (&cond->__data.__nwaiters, nwaiters, pshared);
+
+ lll_lock (cond->__data.__lock, pshared);
+
+ nwaiters = cond->__data.__nwaiters;
+ }
+ while (nwaiters >= (1 << COND_NWAITERS_SHIFT));
+ }
+
+ return 0;
+}
+weak_alias(__pthread_cond_destroy, pthread_cond_destroy)