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/* $OpenBSD: rf_dagutils.h,v 1.2 1999/02/16 00:02:33 niklas Exp $ */
/* $NetBSD: rf_dagutils.h,v 1.3 1999/02/05 00:06:08 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Mark Holland, William V. Courtright II
*
* 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_dagutils.h -- header file for utility routines for manipulating DAGs
*
*************************************************************************/
#include "rf_types.h"
#include "rf_dagfuncs.h"
#include "rf_general.h"
#ifndef _RF__RF_DAGUTILS_H_
#define _RF__RF_DAGUTILS_H_
struct RF_RedFuncs_s {
int (*regular) (RF_DagNode_t *);
char *RegularName;
int (*simple) (RF_DagNode_t *);
char *SimpleName;
};
extern RF_RedFuncs_t rf_xorFuncs;
extern RF_RedFuncs_t rf_xorRecoveryFuncs;
void
rf_InitNode(RF_DagNode_t * node, RF_NodeStatus_t initstatus,
int commit,
int (*doFunc) (RF_DagNode_t * node),
int (*undoFunc) (RF_DagNode_t * node),
int (*wakeFunc) (RF_DagNode_t * node, int status),
int nSucc, int nAnte, int nParam, int nResult,
RF_DagHeader_t * hdr, char *name, RF_AllocListElem_t * alist);
void rf_FreeDAG(RF_DagHeader_t * dag_h);
RF_PropHeader_t *rf_MakePropListEntry(RF_DagHeader_t * dag_h, int resultNum,
int paramNum, RF_PropHeader_t * next, RF_AllocListElem_t * allocList);
int rf_ConfigureDAGs(RF_ShutdownList_t ** listp);
RF_DagHeader_t *rf_AllocDAGHeader(void);
void rf_FreeDAGHeader(RF_DagHeader_t * dh);
void *rf_AllocBuffer(RF_Raid_t * raidPtr, RF_DagHeader_t * dag_h,
RF_PhysDiskAddr_t * pda, RF_AllocListElem_t * allocList);
char *rf_NodeStatusString(RF_DagNode_t * node);
void rf_PrintNodeInfoString(RF_DagNode_t * node);
int rf_AssignNodeNums(RF_DagHeader_t * dag_h);
int rf_RecurAssignNodeNums(RF_DagNode_t * node, int num, int unvisited);
void rf_ResetDAGHeaderPointers(RF_DagHeader_t * dag_h, RF_DagHeader_t * newptr);
void rf_RecurResetDAGHeaderPointers(RF_DagNode_t * node, RF_DagHeader_t * newptr);
void rf_PrintDAGList(RF_DagHeader_t * dag_h);
int rf_ValidateDAG(RF_DagHeader_t * dag_h);
void rf_redirect_asm(RF_Raid_t * raidPtr, RF_AccessStripeMap_t * asmap);
void rf_MapUnaccessedPortionOfStripe(RF_Raid_t * raidPtr,
RF_RaidLayout_t * layoutPtr,
RF_AccessStripeMap_t * asmap, RF_DagHeader_t * dag_h,
RF_AccessStripeMapHeader_t ** new_asm_h, int *nRodNodes, char **sosBuffer,
char **eosBuffer, RF_AllocListElem_t * allocList);
int rf_PDAOverlap(RF_RaidLayout_t * layoutPtr, RF_PhysDiskAddr_t * src,
RF_PhysDiskAddr_t * dest);
void rf_GenerateFailedAccessASMs(RF_Raid_t * raidPtr,
RF_AccessStripeMap_t * asmap, RF_PhysDiskAddr_t * failedPDA,
RF_DagHeader_t * dag_h, RF_AccessStripeMapHeader_t ** new_asm_h,
int *nXorBufs, char **rpBufPtr, char *overlappingPDAs,
RF_AllocListElem_t * allocList);
/* flags used by RangeRestrictPDA */
#define RF_RESTRICT_NOBUFFER 0
#define RF_RESTRICT_DOBUFFER 1
void rf_RangeRestrictPDA(RF_Raid_t * raidPtr, RF_PhysDiskAddr_t * src,
RF_PhysDiskAddr_t * dest, int dobuffer, int doraidaddr);
int rf_compute_workload_shift(RF_Raid_t * raidPtr, RF_PhysDiskAddr_t * pda);
void rf_SelectMirrorDiskIdle(RF_DagNode_t * node);
void rf_SelectMirrorDiskPartition(RF_DagNode_t * node);
#endif /* !_RF__RF_DAGUTILS_H_ */
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