| /* Copyright (C) 2000-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Kaz Kylheku <kaz@ashi.footprints.net>. |
| |
| 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; see the file COPYING.LIB. If |
| not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include <assert.h> |
| #include <errno.h> |
| #include <pthread.h> |
| #include <time.h> |
| |
| #include "posix-timer.h" |
| |
| |
| /* Delete timer TIMERID. */ |
| int |
| timer_delete (timer_t timerid) |
| { |
| struct timer_node *timer; |
| int retval = -1; |
| |
| pthread_mutex_lock (&__timer_mutex); |
| |
| timer = timer_id2ptr (timerid); |
| if (! timer_valid (timer)) |
| /* Invalid timer ID or the timer is not in use. */ |
| __set_errno (EINVAL); |
| else |
| { |
| if (timer->armed && timer->thread != NULL) |
| { |
| struct thread_node *thread = timer->thread; |
| assert (thread != NULL); |
| |
| /* If thread is cancelled while waiting for handler to terminate, |
| the mutex is unlocked and timer_delete is aborted. */ |
| pthread_cleanup_push (__timer_mutex_cancel_handler, &__timer_mutex); |
| |
| /* If timer is currently being serviced, wait for it to finish. */ |
| while (thread->current_timer == timer) |
| pthread_cond_wait (&thread->cond, &__timer_mutex); |
| |
| pthread_cleanup_pop (0); |
| } |
| |
| /* Remove timer from whatever queue it may be on and deallocate it. */ |
| timer->inuse = TIMER_DELETED; |
| list_unlink_ip (&timer->links); |
| timer_delref (timer); |
| retval = 0; |
| } |
| |
| pthread_mutex_unlock (&__timer_mutex); |
| |
| return retval; |
| } |