diff options
Diffstat (limited to 'sysdeps/htl/pt-cond-brdcast.c')
-rw-r--r-- | sysdeps/htl/pt-cond-brdcast.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/htl/pt-cond-brdcast.c b/sysdeps/htl/pt-cond-brdcast.c new file mode 100644 index 0000000..fc1d653 --- /dev/null +++ b/sysdeps/htl/pt-cond-brdcast.c @@ -0,0 +1,44 @@ +/* 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); |