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/* $OpenBSD: rf_diskthreads.h,v 1.1 1999/01/11 14:29:18 niklas Exp $ */
/* $NetBSD: rf_diskthreads.h,v 1.1 1998/11/13 04:20:29 oster Exp $ */
/*
* rf_diskthreads.h
*/
/*
* Copyright (c) 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Jim Zelenka
*
* 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.
*/
/*
* :
* Log: rf_diskthreads.h,v
* Revision 1.7 1996/06/10 11:55:47 jimz
* Straightened out some per-array/not-per-array distinctions, fixed
* a couple bugs related to confusion. Added shutdown lists. Removed
* layout shutdown function (now subsumed by shutdown lists).
*
* Revision 1.6 1996/06/09 02:36:46 jimz
* lots of little crufty cleanup- fixup whitespace
* issues, comment #ifdefs, improve typing in some
* places (esp size-related)
*
* Revision 1.5 1996/06/07 21:33:04 jimz
* begin using consistent types for sector numbers,
* stripe numbers, row+col numbers, recon unit numbers
*
* Revision 1.4 1996/05/30 23:22:16 jimz
* bugfixes of serialization, timing problems
* more cleanup
*
* Revision 1.3 1996/05/30 11:29:41 jimz
* Numerous bug fixes. Stripe lock release code disagreed with the taking code
* about when stripes should be locked (I made it consistent: no parity, no lock)
* There was a lot of extra serialization of I/Os which I've removed- a lot of
* it was to calculate values for the cache code, which is no longer with us.
* More types, function, macro cleanup. Added code to properly quiesce the array
* on shutdown. Made a lot of stuff array-specific which was (bogusly) general
* before. Fixed memory allocation, freeing bugs.
*
* Revision 1.2 1996/05/23 21:46:35 jimz
* checkpoint in code cleanup (release prep)
* lots of types, function names have been fixed
*
* Revision 1.1 1996/05/18 19:55:58 jimz
* Initial revision
*
*/
/*
* rf_diskthreads.h -- types and prototypes for disk thread system
*/
#ifndef _RF__RF_DISKTHREADS_H_
#define _RF__RF_DISKTHREADS_H_
#include "rf_types.h"
/* this is the information that a disk thread needs to do its job */
struct RF_DiskId_s {
RF_DiskQueue_t *queue;
RF_Raid_t *raidPtr;
RF_RaidDisk_t *disk;
int fd; /* file descriptor */
RF_RowCol_t row, col; /* debug only */
#ifdef SIMULATE
int state;
#endif /* SIMULATE */
};
int rf_ConfigureDiskThreads(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr,
RF_Config_t *cfgPtr);
#ifdef SIMULATE
int rf_SetDiskIdle(RF_Raid_t *raidPtr, RF_RowCol_t r, RF_RowCol_t c);
int rf_ScanDiskQueues(RF_Raid_t *raidPtr);
void rf_simulator_complete_io(RF_DiskId_t *id);
void rf_PrintDiskStat(RF_Raid_t *raidPtr);
#else /* SIMULATE */
int rf_ShutdownDiskThreads(RF_Raid_t *raidPtr);
#endif /* SIMULATE */
#endif /* !_RF__RF_DISKTHREADS_H_ */
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