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/* Copyright (C) 2003-2019 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, see <http://www.gnu.org/licenses/>. */
#include <pthread.h>
#include <setjmp.h>
#include <signal.h>
#include <sys/types.h>
/* Nonzero if the system calls are not available. */
extern int __no_posix_timers attribute_hidden;
/* Callback to start helper thread. */
extern void __start_helper_thread (void) attribute_hidden;
/* Control variable for helper thread creation. */
extern pthread_once_t __helper_once attribute_hidden;
/* TID of the helper thread. */
extern pid_t __helper_tid attribute_hidden;
/* List of active SIGEV_THREAD timers. */
extern struct timer *__active_timer_sigev_thread attribute_hidden;
/* Lock for the __active_timer_sigev_thread. */
extern pthread_mutex_t __active_timer_sigev_thread_lock 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;
/* Next element in list of active SIGEV_THREAD timers. */
struct timer *next;
};
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