| /* Copyright (C) 2003-2018 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; |
| }; |