Annotation of sys/dev/raidframe/rf_fifo.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: rf_fifo.h,v 1.3 2002/12/16 07:01:04 tdeval Exp $ */
! 2: /* $NetBSD: rf_fifo.h,v 1.3 1999/02/05 00:06:11 oster Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1995 Carnegie-Mellon University.
! 6: * All rights reserved.
! 7: *
! 8: * Author: Mark Holland
! 9: *
! 10: * Permission to use, copy, modify and distribute this software and
! 11: * its documentation is hereby granted, provided that both the copyright
! 12: * notice and this permission notice appear in all copies of the
! 13: * software, derivative works or modified versions, and any portions
! 14: * thereof, and that both notices appear in supporting documentation.
! 15: *
! 16: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
! 17: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
! 18: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
! 19: *
! 20: * Carnegie Mellon requests users of this software to return to
! 21: *
! 22: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
! 23: * School of Computer Science
! 24: * Carnegie Mellon University
! 25: * Pittsburgh PA 15213-3890
! 26: *
! 27: * any improvements or extensions that they make and grant Carnegie the
! 28: * rights to redistribute these changes.
! 29: */
! 30:
! 31: /*
! 32: * rf_fifo.h -- prioritized FIFO queue code.
! 33: *
! 34: * 4-9-93 Created (MCH)
! 35: */
! 36:
! 37:
! 38: #ifndef _RF__RF_FIFO_H_
! 39: #define _RF__RF_FIFO_H_
! 40:
! 41: #include "rf_archs.h"
! 42: #include "rf_types.h"
! 43: #include "rf_diskqueue.h"
! 44:
! 45: typedef struct RF_FifoHeader_s {
! 46: RF_DiskQueueData_t *hq_head, *hq_tail; /* high priority requests */
! 47: RF_DiskQueueData_t *lq_head, *lq_tail; /* low priority requests */
! 48: int hq_count, lq_count; /* debug only */
! 49: } RF_FifoHeader_t;
! 50:
! 51: extern void *rf_FifoCreate(RF_SectorCount_t, RF_AllocListElem_t *,
! 52: RF_ShutdownList_t **);
! 53: extern void rf_FifoEnqueue(void *, RF_DiskQueueData_t *, int);
! 54: extern RF_DiskQueueData_t *rf_FifoDequeue(void *);
! 55: extern RF_DiskQueueData_t *rf_FifoPeek(void *);
! 56: extern int rf_FifoPromote(void *, RF_StripeNum_t, RF_ReconUnitNum_t);
! 57:
! 58: #endif /* !_RF__RF_FIFO_H_ */
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