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/* Copyright (C) 2003, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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 <errno.h>
#include <stdlib.h>
#include <time.h>
#include <sysdep.h>
#include <bits/kernel-features.h>
#include "kernel-posix-timers.h"
#ifdef __NR_timer_delete
# ifndef __ASSUME_POSIX_TIMERS
static int compat_timer_delete (timer_t timerid);
# define timer_delete static compat_timer_delete
# include <nptl/sysdeps/pthread/timer_delete.c>
# undef timer_delete
# endif
# ifdef timer_delete_alias
# define timer_delete timer_delete_alias
# endif
int
timer_delete (
timer_t timerid)
{
# undef timer_delete
# ifndef __ASSUME_POSIX_TIMERS
if (__no_posix_timers >= 0)
# endif
{
struct timer *kt = (struct timer *) timerid;
/* Delete the kernel timer object. */
int res = INLINE_SYSCALL (timer_delete, 1, kt->ktimerid);
if (res == 0)
{
if (kt->sigev_notify == SIGEV_THREAD)
{
/* Remove the timer from the list. */
pthread_mutex_lock (&__active_timer_sigev_thread_lock);
if (__active_timer_sigev_thread == kt)
__active_timer_sigev_thread = kt->next;
else
{
struct timer *prevp = __active_timer_sigev_thread;
while (prevp->next != NULL)
if (prevp->next == kt)
{
prevp->next = kt->next;
break;
}
else
prevp = prevp->next;
}
pthread_mutex_unlock (&__active_timer_sigev_thread_lock);
}
# ifndef __ASSUME_POSIX_TIMERS
/* We know the syscall support is available. */
__no_posix_timers = 1;
# endif
/* Free the memory. */
(void) free (kt);
return 0;
}
/* The kernel timer is not known or something else bad happened.
Return the error. */
# ifndef __ASSUME_POSIX_TIMERS
if (errno != ENOSYS)
{
__no_posix_timers = 1;
# endif
return -1;
# ifndef __ASSUME_POSIX_TIMERS
}
__no_posix_timers = -1;
# endif
}
# ifndef __ASSUME_POSIX_TIMERS
return compat_timer_delete (timerid);
# endif
}
#else
# ifdef timer_delete_alias
# define timer_delete timer_delete_alias
# endif
/* The new system calls are not available. Use the userlevel
implementation. */
# include <nptl/sysdeps/pthread/timer_delete.c>
#endif
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