NetBSD/sys/dev/raidframe/rf_threadstuff.h

100 lines
3.5 KiB
C

/* $NetBSD: rf_threadstuff.h,v 1.20 2003/12/29 06:30:42 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Mark Holland, Daniel Stodolsky, Jim Zelenka
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* threadstuff.h -- definitions for threads, locks, and synchronization
*
* The purpose of this file is provide some illusion of portability.
* If the functions below can be implemented with the same semantics on
* some new system, then at least the synchronization and thread control
* part of the code should not require modification to port to a new machine.
* the only other place where the pthread package is explicitly used is
* threadid.h
*
* this file should be included above stdio.h to get some necessary defines.
*
*/
#ifndef _RF__RF_THREADSTUFF_H_
#define _RF__RF_THREADSTUFF_H_
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/kthread.h>
#include <sys/lock.h>
#include <dev/raidframe/raidframevar.h>
#define decl_simple_lock_data(a,b) a struct simplelock b;
typedef struct proc *RF_Thread_t;
typedef void *RF_ThreadArg_t;
#define RF_DECLARE_MUTEX(_m_) decl_simple_lock_data(,(_m_))
#define RF_DECLARE_STATIC_MUTEX(_m_) decl_simple_lock_data(static,(_m_))
#define RF_DECLARE_EXTERN_MUTEX(_m_) decl_simple_lock_data(extern,(_m_))
#define RF_DECLARE_COND(_c_) int _c_;
#define RF_LOCK_MUTEX(_m_) simple_lock(&(_m_))
#define RF_UNLOCK_MUTEX(_m_) simple_unlock(&(_m_))
/* non-spinlock */
#define decl_lock_data(a,b) a struct lock b;
#define RF_DECLARE_LKMGR_MUTEX(_m_) decl_lock_data(,(_m_))
#define RF_DECLARE_LKMGR_STATIC_MUTEX(_m_) decl_lock_data(static,(_m_))
#define RF_DECLARE_LKMGR_EXTERN_MUTEX(_m_) decl_lock_data(extern,(_m_))
#define RF_LOCK_LKMGR_MUTEX(_m_) lockmgr(&(_m_),LK_EXCLUSIVE,NULL)
#define RF_UNLOCK_LKMGR_MUTEX(_m_) lockmgr(&(_m_),LK_RELEASE,NULL)
/*
* In NetBSD, kernel threads are simply processes which share several
* substructures and never run in userspace.
*/
#define RF_WAIT_COND(_c_,_m_) \
ltsleep(&(_c_), PRIBIO, "rfwcond", 0, &(_m_))
#define RF_SIGNAL_COND(_c_) wakeup_one(&(_c_))
#define RF_BROADCAST_COND(_c_) wakeup(&(_c_))
#define RF_CREATE_THREAD(_handle_, _func_, _arg_, _name_) \
kthread_create1((void (*)(void *))(_func_), (void *)(_arg_), \
(struct proc **)&(_handle_), _name_)
#define RF_CREATE_ENGINE_THREAD(_handle_, _func_, _arg_, _fmt_, _fmt_arg_) \
kthread_create1((void (*)(void *))(_func_), (void *)(_arg_), \
(struct proc **)&(_handle_), _fmt_, _fmt_arg_)
#define rf_mutex_init(m) simple_lock_init(m)
#endif /* !_RF__RF_THREADSTUFF_H_ */