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/*
* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
#ifndef __XFS_SUPPORT_SV_H__
#define __XFS_SUPPORT_SV_H__
#include <linux/version.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <asm/atomic.h>
#include <asm/semaphore.h>
/*
* Synchronisation variables
*
* parameters "pri", "svf" and "rts" are not (yet?) implemented
*
*/
#define init_sv(sv,type,name,flag) \
_sv_init(sv)
#define sv_init(sv,flag,name) \
_sv_init(sv)
#define sv_wait(sv, pri, lock, spl) \
_sv_wait(sv, lock, spl, 0, NULL)
#define sv_wait_sig(sv, pri, lock, spl) \
_sv_wait(sv, lock, spl, 1, NULL)
#define sv_timedwait(sv, pri, lock, spl, svf, ts, rts) \
_sv_wait(sv, lock, spl, 0, ts)
#define sv_timedwait_sig(sv, pri, lock, spl, svf, ts, rts) \
_sv_wait(sv, lock, spl, 1, ts)
#define mp_sv_wait(sv, pri, lock, spl) \
_sv_wait(sv, lock, spl, 0, NULL)
#define mp_sv_wait_sig(sv, pri, lock, spl) \
_sv_wait(sv, lock, spl, 1, NULL)
#define sv_broadcast(sv) \
_sv_broadcast(sv)
typedef struct sv_s {
wait_queue_head_t waiters;
spinlock_t lock;
} sv_t;
void _sv_init(sv_t *sv);
void _sv_wait(sv_t *sv, spinlock_t *lock, int spl, int intr, struct timespec *timeout);
void _sv_broadcast(sv_t *sv);
void _sv_signal(sv_t *sv);
#define sv_signal(sv) _sv_signal(sv)
#define sv_broadcast(sv) _sv_broadcast(sv)
#define sv_destroy(sv)
/*
* Initialize sync variables.
*
* void sv_init(sv_t *svp, int type, char *name);
* void init_sv(sv_t *svp, int type, char *name, long sequencer);
*
* Name may be null; used only when metering routines are installed
* (see mutex_init, init_mutex above).
*/
#define SV_FIFO 0x0 /* sv_t is FIFO type */
#define SV_LIFO 0x2 /* sv_t is LIFO type */
#define SV_PRIO 0x4 /* sv_t is PRIO type */
#define SV_KEYED 0x6 /* sv_t is KEYED type */
#define SV_DEFAULT SV_FIFO
#endif /* __XFS_SUPPORT_SV_H__ */
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