38a3987b69
Carnegie Mellon University. Full RAID implementation, including levels 0, 1, 4, 5, 6, parity logging, and a few other goodies. Ported to NetBSD by Greg Oster.
103 lines
3.5 KiB
C
103 lines
3.5 KiB
C
/* $NetBSD: rf_diskthreads.h,v 1.1 1998/11/13 04:20:29 oster Exp $ */
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/*
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* rf_diskthreads.h
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*/
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/*
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* Copyright (c) 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: 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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* :
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* Log: rf_diskthreads.h,v
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* Revision 1.7 1996/06/10 11:55:47 jimz
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* Straightened out some per-array/not-per-array distinctions, fixed
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* a couple bugs related to confusion. Added shutdown lists. Removed
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* layout shutdown function (now subsumed by shutdown lists).
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*
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* Revision 1.6 1996/06/09 02:36:46 jimz
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* lots of little crufty cleanup- fixup whitespace
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* issues, comment #ifdefs, improve typing in some
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* places (esp size-related)
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*
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* Revision 1.5 1996/06/07 21:33:04 jimz
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* begin using consistent types for sector numbers,
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* stripe numbers, row+col numbers, recon unit numbers
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*
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* Revision 1.4 1996/05/30 23:22:16 jimz
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* bugfixes of serialization, timing problems
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* more cleanup
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*
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* Revision 1.3 1996/05/30 11:29:41 jimz
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* Numerous bug fixes. Stripe lock release code disagreed with the taking code
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* about when stripes should be locked (I made it consistent: no parity, no lock)
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* There was a lot of extra serialization of I/Os which I've removed- a lot of
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* it was to calculate values for the cache code, which is no longer with us.
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* More types, function, macro cleanup. Added code to properly quiesce the array
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* on shutdown. Made a lot of stuff array-specific which was (bogusly) general
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* before. Fixed memory allocation, freeing bugs.
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*
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* Revision 1.2 1996/05/23 21:46:35 jimz
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* checkpoint in code cleanup (release prep)
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* lots of types, function names have been fixed
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*
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* Revision 1.1 1996/05/18 19:55:58 jimz
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* Initial revision
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*
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*/
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/*
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* rf_diskthreads.h -- types and prototypes for disk thread system
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*/
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#ifndef _RF__RF_DISKTHREADS_H_
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#define _RF__RF_DISKTHREADS_H_
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#include "rf_types.h"
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/* this is the information that a disk thread needs to do its job */
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struct RF_DiskId_s {
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RF_DiskQueue_t *queue;
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RF_Raid_t *raidPtr;
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RF_RaidDisk_t *disk;
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int fd; /* file descriptor */
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RF_RowCol_t row, col; /* debug only */
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#ifdef SIMULATE
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int state;
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#endif /* SIMULATE */
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};
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int rf_ConfigureDiskThreads(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr,
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RF_Config_t *cfgPtr);
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#ifdef SIMULATE
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int rf_SetDiskIdle(RF_Raid_t *raidPtr, RF_RowCol_t r, RF_RowCol_t c);
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int rf_ScanDiskQueues(RF_Raid_t *raidPtr);
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void rf_simulator_complete_io(RF_DiskId_t *id);
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void rf_PrintDiskStat(RF_Raid_t *raidPtr);
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#else /* SIMULATE */
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int rf_ShutdownDiskThreads(RF_Raid_t *raidPtr);
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#endif /* SIMULATE */
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#endif /* !_RF__RF_DISKTHREADS_H_ */
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