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glibc/sysdeps/unix/sysv/linux/aio_misc.h
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/* Copyright (C) 2004-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Jakub Jelinek <jakub@redhat.com>, 2004. | |
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/>. */ | |
#ifndef _AIO_MISC_H | |
# include_next <aio_misc.h> | |
# include <limits.h> | |
# include <pthread.h> | |
# include <signal.h> | |
# include <sysdep.h> | |
# define aio_start_notify_thread __aio_start_notify_thread | |
# define aio_create_helper_thread __aio_create_helper_thread | |
extern inline void | |
__aio_start_notify_thread (void) | |
{ | |
sigset_t ss; | |
sigemptyset (&ss); | |
INTERNAL_SYSCALL_DECL (err); | |
INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, NULL, _NSIG / 8); | |
} | |
extern inline int | |
__aio_create_helper_thread (pthread_t *threadp, void *(*tf) (void *), | |
void *arg) | |
{ | |
pthread_attr_t attr; | |
/* Make sure the thread is created detached. */ | |
pthread_attr_init (&attr); | |
pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); | |
/* The helper thread needs only very little resources. */ | |
(void) pthread_attr_setstacksize (&attr, __pthread_get_minstack (&attr)); | |
/* Block all signals in the helper thread. To do this thoroughly we | |
temporarily have to block all signals here. */ | |
sigset_t ss; | |
sigset_t oss; | |
sigfillset (&ss); | |
INTERNAL_SYSCALL_DECL (err); | |
INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, &oss, _NSIG / 8); | |
int ret = pthread_create (threadp, &attr, tf, arg); | |
/* Restore the signal mask. */ | |
INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &oss, NULL, | |
_NSIG / 8); | |
(void) pthread_attr_destroy (&attr); | |
return ret; | |
} | |
#endif |