63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
|
/* $FreeBSD$ */
|
||
|
|
/* $NetBSD: rf_fifo.h,v 1.3 1999/02/05 00:06:11 oster Exp $ */
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1995 Carnegie-Mellon University.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Author: Mark Holland
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* rf_fifo.h -- prioritized FIFO queue code.
|
||
|
|
*
|
||
|
|
* 4-9-93 Created (MCH)
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef _RF__RF_FIFO_H_
|
||
|
|
#define _RF__RF_FIFO_H_
|
||
|
|
|
||
|
|
#include <dev/raidframe/rf_archs.h>
|
||
|
|
#include <dev/raidframe/rf_types.h>
|
||
|
|
#include <dev/raidframe/rf_diskqueue.h>
|
||
|
|
|
||
|
|
typedef struct RF_FifoHeader_s {
|
||
|
|
RF_DiskQueueData_t *hq_head, *hq_tail; /* high priority requests */
|
||
|
|
RF_DiskQueueData_t *lq_head, *lq_tail; /* low priority requests */
|
||
|
|
int hq_count, lq_count; /* debug only */
|
||
|
|
} RF_FifoHeader_t;
|
||
|
|
|
||
|
|
extern void *
|
||
|
|
rf_FifoCreate(RF_SectorCount_t sectPerDisk,
|
||
|
|
RF_AllocListElem_t * clList, RF_ShutdownList_t ** listp);
|
||
|
|
extern void
|
||
|
|
rf_FifoEnqueue(void *q_in, RF_DiskQueueData_t * elem,
|
||
|
|
int priority);
|
||
|
|
extern RF_DiskQueueData_t *rf_FifoDequeue(void *q_in);
|
||
|
|
extern RF_DiskQueueData_t *rf_FifoPeek(void *q_in);
|
||
|
|
extern int
|
||
|
|
rf_FifoPromote(void *q_in, RF_StripeNum_t parityStripeID,
|
||
|
|
RF_ReconUnitNum_t which_ru);
|
||
|
|
|
||
|
|
#endif /* !_RF__RF_FIFO_H_ */
|