/* 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 <errno.h>

#include <pthread.h>

#include <time.h>

#include "posix-timer.h"

/* Get expiration overrun for timer TIMERID.  */

int

timer_getoverrun (timer_t timerid)

{

  struct timer_node *timer;

  int retval = -1;

  pthread_mutex_lock (&__timer_mutex);

  if (! timer_valid (timer = timer_id2ptr (timerid)))

    __set_errno (EINVAL);

  else

    retval = timer->overrun_count;

  pthread_mutex_unlock (&__timer_mutex);

  return retval;

}