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/* Copyright (C) 2003 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 <setjmp.h>
#include <signal.h>
#include <stdbool.h>
#include <sysdep.h>
#include <kernel-features.h>
#include "kernel-posix-timers.h"
#ifdef __NR_timer_create
/* Helper thread to call the user-provided function. */
static void *
timer_sigev_thread (void *arg)
{
struct timer *tk = (struct timer *) arg;
/* Call the user-provided function. */
tk->thrfunc (tk->sival);
return NULL;
}
/* Helper function to support starting threads for SIGEV_THREAD. */
void *
attribute_hidden
__timer_helper_thread (void *arg)
{
/* Block all signals. */
sigset_t ss;
sigfillset (&ss);
(void) pthread_sigmask (SIG_BLOCK, &ss, NULL);
struct timer *tk = (struct timer *) arg;
/* Synchronize with the parent. */
(void) pthread_barrier_wait (&tk->bar);
/* We will only wait for the signal the kernel will send. */
sigemptyset (&ss);
sigaddset (&ss, TIMER_SIG);
/* Endless loop of waiting for signals. The loop is only ended when
the thread is canceled. */
while (1)
{
siginfo_t si;
if (sigwaitinfo (&ss, &si) > 0 && si.si_timerid == tk->ktimerid)
{
/* That the signal we are waiting for. */
pthread_t th;
(void) pthread_create (&th, &tk->attr, timer_sigev_thread, arg);
}
}
}
#endif
#ifndef __ASSUME_POSIX_TIMERS
# include <nptl/sysdeps/pthread/timer_routines.c>
#endif
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