zfs/include/os/linux/spl/sys/thread.h

/*
 *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
 *  Copyright (C) 2007 The Regents of the University of California.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
 *  UCRL-CODE-235197
 *
 *  This file is part of the SPL, Solaris Porting Layer.
 *
 *  The SPL is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License as published by the
 *  Free Software Foundation; either version 2 of the License, or (at your
 *  option) any later version.
 *
 *  The SPL 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 General Public License
 *  for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _SPL_THREAD_H
#define	_SPL_THREAD_H

#include <linux/module.h>
#include <linux/mm.h>
#include <linux/spinlock.h>
#include <linux/kthread.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
#include <sys/tsd.h>

/*
 * Thread interfaces
 */
#define	TP_MAGIC			0x53535353

#define	TS_SLEEP			TASK_INTERRUPTIBLE
#define	TS_RUN				TASK_RUNNING
#define	TS_ZOMB				EXIT_ZOMBIE
#define	TS_STOPPED			TASK_STOPPED

typedef void (*thread_func_t)(void *);

#define	thread_create_named(name, stk, stksize, func, arg, len,	\
    pp, state, pri)	\
	__thread_create(stk, stksize, (thread_func_t)func,		\
	name, arg, len, pp, state, pri)

#define	thread_create(stk, stksize, func, arg, len, pp, state, pri)	\
	__thread_create(stk, stksize, (thread_func_t)func, #func,	\
	arg, len, pp, state, pri)

#define	thread_exit()			spl_thread_exit()
#define	thread_join(t)			VERIFY(0)
#define	curthread			current
#define	getcomm()			current->comm
#define	getpid()			current->pid

extern kthread_t *__thread_create(caddr_t stk, size_t  stksize,
    thread_func_t func, const char *name, void *args, size_t len, proc_t *pp,
    int state, pri_t pri);
extern struct task_struct *spl_kthread_create(int (*func)(void *),
    void *data, const char namefmt[], ...);

static inline __attribute__((noreturn)) void
spl_thread_exit(void)
{
	tsd_exit();
	SPL_KTHREAD_COMPLETE_AND_EXIT(NULL, 0);
}

extern proc_t p0;

#ifdef HAVE_SIGINFO
typedef kernel_siginfo_t spl_kernel_siginfo_t;
#else
typedef siginfo_t spl_kernel_siginfo_t;
#endif

#ifdef HAVE_SET_SPECIAL_STATE
#define	spl_set_special_state(x) set_special_state((x))
#else
#define	spl_set_special_state(x) __set_current_state((x))
#endif


#endif  /* _SPL_THREAD_H */