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