diff options
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/pthread/timer_delete.c')
-rw-r--r-- | libpthread/linuxthreads/sysdeps/pthread/timer_delete.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/pthread/timer_delete.c b/libpthread/linuxthreads/sysdeps/pthread/timer_delete.c new file mode 100644 index 000000000..a529d7392 --- /dev/null +++ b/libpthread/linuxthreads/sysdeps/pthread/timer_delete.c @@ -0,0 +1,69 @@ +/* Copyright (C) 2000, 2001 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 (timerid) + 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; +} |