122 lines
4.3 KiB
C
122 lines
4.3 KiB
C
/* $NetBSD: rf_dagutils.h,v 1.4 2001/10/04 15:58:52 oster Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Mark Holland, William V. Courtright II
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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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* rf_dagutils.h -- header file for utility routines for manipulating DAGs
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*
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*************************************************************************/
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#include <dev/raidframe/raidframevar.h>
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#include "rf_dagfuncs.h"
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#include "rf_general.h"
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#ifndef _RF__RF_DAGUTILS_H_
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#define _RF__RF_DAGUTILS_H_
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struct RF_RedFuncs_s {
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int (*regular) (RF_DagNode_t *);
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char *RegularName;
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int (*simple) (RF_DagNode_t *);
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char *SimpleName;
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};
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extern RF_RedFuncs_t rf_xorFuncs;
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extern RF_RedFuncs_t rf_xorRecoveryFuncs;
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void
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rf_InitNode(RF_DagNode_t * node, RF_NodeStatus_t initstatus,
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int commit,
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int (*doFunc) (RF_DagNode_t * node),
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int (*undoFunc) (RF_DagNode_t * node),
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int (*wakeFunc) (RF_DagNode_t * node, int status),
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int nSucc, int nAnte, int nParam, int nResult,
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RF_DagHeader_t * hdr, char *name, RF_AllocListElem_t * alist);
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void rf_FreeDAG(RF_DagHeader_t * dag_h);
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RF_PropHeader_t *rf_MakePropListEntry(RF_DagHeader_t * dag_h, int resultNum,
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int paramNum, RF_PropHeader_t * next, RF_AllocListElem_t * allocList);
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int rf_ConfigureDAGs(RF_ShutdownList_t ** listp);
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RF_DagHeader_t *rf_AllocDAGHeader(void);
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void rf_FreeDAGHeader(RF_DagHeader_t * dh);
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void *rf_AllocBuffer(RF_Raid_t * raidPtr, RF_DagHeader_t * dag_h,
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RF_PhysDiskAddr_t * pda, RF_AllocListElem_t * allocList);
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char *rf_NodeStatusString(RF_DagNode_t * node);
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void rf_PrintNodeInfoString(RF_DagNode_t * node);
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int rf_AssignNodeNums(RF_DagHeader_t * dag_h);
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int rf_RecurAssignNodeNums(RF_DagNode_t * node, int num, int unvisited);
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void rf_ResetDAGHeaderPointers(RF_DagHeader_t * dag_h, RF_DagHeader_t * newptr);
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void rf_RecurResetDAGHeaderPointers(RF_DagNode_t * node, RF_DagHeader_t * newptr);
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void rf_PrintDAGList(RF_DagHeader_t * dag_h);
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int rf_ValidateDAG(RF_DagHeader_t * dag_h);
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void rf_redirect_asm(RF_Raid_t * raidPtr, RF_AccessStripeMap_t * asmap);
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void rf_MapUnaccessedPortionOfStripe(RF_Raid_t * raidPtr,
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RF_RaidLayout_t * layoutPtr,
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RF_AccessStripeMap_t * asmap, RF_DagHeader_t * dag_h,
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RF_AccessStripeMapHeader_t ** new_asm_h, int *nRodNodes, char **sosBuffer,
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char **eosBuffer, RF_AllocListElem_t * allocList);
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int rf_PDAOverlap(RF_RaidLayout_t * layoutPtr, RF_PhysDiskAddr_t * src,
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RF_PhysDiskAddr_t * dest);
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void rf_GenerateFailedAccessASMs(RF_Raid_t * raidPtr,
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RF_AccessStripeMap_t * asmap, RF_PhysDiskAddr_t * failedPDA,
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RF_DagHeader_t * dag_h, RF_AccessStripeMapHeader_t ** new_asm_h,
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int *nXorBufs, char **rpBufPtr, char *overlappingPDAs,
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RF_AllocListElem_t * allocList);
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/* flags used by RangeRestrictPDA */
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#define RF_RESTRICT_NOBUFFER 0
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#define RF_RESTRICT_DOBUFFER 1
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void rf_RangeRestrictPDA(RF_Raid_t * raidPtr, RF_PhysDiskAddr_t * src,
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RF_PhysDiskAddr_t * dest, int dobuffer, int doraidaddr);
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int rf_compute_workload_shift(RF_Raid_t * raidPtr, RF_PhysDiskAddr_t * pda);
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void rf_SelectMirrorDiskIdle(RF_DagNode_t * node);
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void rf_SelectMirrorDiskPartition(RF_DagNode_t * node);
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#endif /* !_RF__RF_DAGUTILS_H_ */
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