/* 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,   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,   Boston, MA 02111-1307, USA.  */#include <assert.h>#include <errno.h>#include <pthread.h>#include <time.h>#include "posix-timer.h"/* Delete timer TIMERID.  */inttimer_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;}