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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 <pthread.h>
#include <setjmp.h>
#include <signal.h>
/* Nonzero if the system calls are not available. */
extern int __no_posix_timers attribute_hidden;
/* Helper function to implement SIGEV_THREAD. */
extern void *__timer_helper_thread (void *arg) attribute_hidden;
/* Type of timers in the kernel. */
typedef int kernel_timer_t;
/* Internal representation of timer. */
struct timer
{
/* Notification mechanism. */
int sigev_notify;
/* Timer ID returned by the kernel. */
kernel_timer_t ktimerid;
/* All new elements must be added after ktimerid. And if the thrfunc
element is not the third element anymore the memory allocation in
timer_create needs to be changed. */
/* Parameters for the thread to be started for SIGEV_THREAD. */
void (*thrfunc) (sigval_t);
sigval_t sival;
pthread_attr_t attr;
/* Id of the helper thread. */
pthread_t th;
/* Barrier used for synchronization. */
pthread_barrier_t bar;
};
/* This is the signal the kernel will send to the helper thread. */
#define TIMER_SIG 40 /* some RT signal */
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