1  /* Copyright (C) 2000-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public License as
       6     published by the Free Software Foundation; either version 2.1 of the
       7     License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; see the file COPYING.LIB.  If
      16     not, see <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <errno.h>
      19  #include <pthread.h>
      20  #include <time.h>
      21  
      22  #include "posix-timer.h"
      23  
      24  
      25  /* Get expiration overrun for timer TIMERID.  */
      26  int
      27  timer_getoverrun (timer_t timerid)
      28  {
      29    struct timer_node *timer;
      30    int retval = -1;
      31  
      32    pthread_mutex_lock (&__timer_mutex);
      33  
      34    if (! timer_valid (timer = timer_id2ptr (timerid)))
      35      __set_errno (EINVAL);
      36    else
      37      retval = timer->overrun_count;
      38  
      39    pthread_mutex_unlock (&__timer_mutex);
      40  
      41    return retval;
      42  }