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-rw-r--r--sysdeps/htl/pt-cond-brdcast.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/htl/pt-cond-brdcast.c b/sysdeps/htl/pt-cond-brdcast.c
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+/* Broadcast a condition. Generic version.
+ Copyright (C) 2000-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#include <pthread.h>
+
+#include <pt-internal.h>
+
+/* Unblock all threads that are blocked on condition variable COND. */
+int
+__pthread_cond_broadcast (pthread_cond_t *cond)
+{
+ struct __pthread *wakeup;
+
+ __pthread_spin_lock (&cond->__lock);
+ while ((wakeup = cond->__queue))
+ {
+ __pthread_dequeue (wakeup);
+ __pthread_spin_unlock (&cond->__lock);
+ /* Wake it up without spin held, so it may have a chance to really
+ preempt us */
+ __pthread_wakeup (wakeup);
+ __pthread_spin_lock (&cond->__lock);
+ }
+ __pthread_spin_unlock (&cond->__lock);
+
+ return 0;
+}
+
+strong_alias (__pthread_cond_broadcast, pthread_cond_broadcast);