101 lines
3.5 KiB
C
101 lines
3.5 KiB
C
/* $NetBSD: rf_threadstuff.h,v 1.24 2007/12/05 08:39:53 ad Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Mark Holland, Daniel Stodolsky, Jim Zelenka
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/*
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* threadstuff.h -- definitions for threads, locks, and synchronization
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*
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* The purpose of this file is provide some illusion of portability.
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* If the functions below can be implemented with the same semantics on
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* some new system, then at least the synchronization and thread control
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* part of the code should not require modification to port to a new machine.
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* the only other place where the pthread package is explicitly used is
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* threadid.h
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*
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* this file should be included above stdio.h to get some necessary defines.
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*
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*/
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#ifndef _RF__RF_THREADSTUFF_H_
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#define _RF__RF_THREADSTUFF_H_
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/kthread.h>
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#include <sys/simplelock.h>
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#include <sys/mutex.h>
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#include <dev/raidframe/raidframevar.h>
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#define decl_simple_lock_data(a,b) a struct simplelock b;
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typedef struct lwp *RF_Thread_t;
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typedef void *RF_ThreadArg_t;
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#define RF_DECLARE_MUTEX(_m_) decl_simple_lock_data(,(_m_))
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#define RF_DECLARE_STATIC_MUTEX(_m_) decl_simple_lock_data(static,(_m_))
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#define RF_DECLARE_EXTERN_MUTEX(_m_) decl_simple_lock_data(extern,(_m_))
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#define RF_DECLARE_COND(_c_) int _c_;
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#define RF_LOCK_MUTEX(_m_) simple_lock(&(_m_))
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#define RF_UNLOCK_MUTEX(_m_) simple_unlock(&(_m_))
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/* non-spinlock */
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#define decl_lock_data(a,b) a kmutex_t b;
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#define RF_DECLARE_LKMGR_MUTEX(_m_) decl_lock_data(,(_m_))
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#define RF_DECLARE_LKMGR_STATIC_MUTEX(_m_) decl_lock_data(static,(_m_))
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#define RF_DECLARE_LKMGR_EXTERN_MUTEX(_m_) decl_lock_data(extern,(_m_))
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#define RF_LOCK_LKMGR_MUTEX(_m_) mutex_enter(&(_m_))
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#define RF_UNLOCK_LKMGR_MUTEX(_m_) mutex_exit(&(_m_))
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/*
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* In NetBSD, kernel threads are simply processes which share several
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* substructures and never run in userspace.
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*/
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#define RF_WAIT_COND(_c_,_m_) \
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ltsleep(&(_c_), PRIBIO, "rfwcond", 0, &(_m_))
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#define RF_SIGNAL_COND(_c_) wakeup_one(&(_c_))
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#define RF_BROADCAST_COND(_c_) wakeup(&(_c_))
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#define RF_CREATE_THREAD(_handle_, _func_, _arg_, _name_) \
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kthread_create(PRI_NONE, 0, NULL, (void (*)(void *))(_func_), \
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(void *)(_arg_), &(_handle_), _name_)
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#define RF_CREATE_ENGINE_THREAD(_handle_, _func_, _arg_, _fmt_, _fmt_arg_) \
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kthread_create(PRI_NONE, 0, NULL, (void (*)(void *))(_func_), \
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(void *)(_arg_), &(_handle_), _fmt_, _fmt_arg_)
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#define rf_mutex_init(m) simple_lock_init(m)
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#endif /* !_RF__RF_THREADSTUFF_H_ */
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