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/* $OpenBSD: rf_dagutils.h,v 1.1 1999/01/11 14:29:12 niklas Exp $ */
/* $NetBSD: rf_dagutils.h,v 1.1 1998/11/13 04:20:28 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
*
*************************************************************************/
/*
* :
* Log: rf_dagutils.h,v
* Revision 1.19 1996/07/22 19:52:16 jimz
* switched node params to RF_DagParam_t, a union of
* a 64-bit int and a void *, for better portability
* attempted hpux port, but failed partway through for
* lack of a single C compiler capable of compiling all
* source files
*
* Revision 1.18 1996/07/15 17:22:18 jimz
* nit-pick code cleanup
* resolve stdlib problems on DEC OSF
*
* Revision 1.17 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 1.16 1996/06/06 17:27:46 jimz
* added another select mirror func (partitioning), changed names so dag
* creation routines can use the appropriate one
*
* fixed old idle mirror func to pick closest arm if queue lengths are equal
*
* Revision 1.15 1996/06/03 23:28:26 jimz
* more bugfixes
* check in tree to sync for IPDS runs with current bugfixes
* there still may be a problem with threads in the script test
* getting I/Os stuck- not trivially reproducible (runs ~50 times
* in a row without getting stuck)
*
* Revision 1.14 1996/05/27 18:56:37 jimz
* more code cleanup
* better typing
* compiles in all 3 environments
*
* Revision 1.13 1996/05/24 22:17:04 jimz
* continue code + namespace cleanup
* typed a bunch of flags
*
* Revision 1.12 1996/05/24 04:28:55 jimz
* release cleanup ckpt
*
* Revision 1.11 1996/05/23 21:46:35 jimz
* checkpoint in code cleanup (release prep)
* lots of types, function names have been fixed
*
* Revision 1.10 1996/05/23 00:33:23 jimz
* code cleanup: move all debug decls to rf_options.c, all extern
* debug decls to rf_options.h, all debug vars preceded by rf_
*
* Revision 1.9 1996/05/18 19:51:34 jimz
* major code cleanup- fix syntax, make some types consistent,
* add prototypes, clean out dead code, et cetera
*
* Revision 1.8 1996/05/08 21:01:24 jimz
* fixed up enum type names that were conflicting with other
* enums and function names (ie, "panic")
* future naming trends will be towards RF_ and rf_ for
* everything raidframe-related
*
* Revision 1.7 1996/05/03 19:55:27 wvcii
* added misc routines from old dag creation files
*
* Revision 1.6 1995/12/01 15:57:28 root
* added copyright info
*
* Revision 1.5 1995/11/07 16:21:36 wvcii
* modified InitNode and InitNodeFromBuf prototypes
*
*/
#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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