rf_dagutils.h revision 1.1
1 /* $NetBSD: rf_dagutils.h,v 1.1 1998/11/13 04:20:28 oster Exp $ */ 2 /* 3 * Copyright (c) 1995 Carnegie-Mellon University. 4 * All rights reserved. 5 * 6 * Author: Mark Holland, William V. Courtright II 7 * 8 * Permission to use, copy, modify and distribute this software and 9 * its documentation is hereby granted, provided that both the copyright 10 * notice and this permission notice appear in all copies of the 11 * software, derivative works or modified versions, and any portions 12 * thereof, and that both notices appear in supporting documentation. 13 * 14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 16 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 17 * 18 * Carnegie Mellon requests users of this software to return to 19 * 20 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 21 * School of Computer Science 22 * Carnegie Mellon University 23 * Pittsburgh PA 15213-3890 24 * 25 * any improvements or extensions that they make and grant Carnegie the 26 * rights to redistribute these changes. 27 */ 28 29 /************************************************************************* 30 * 31 * rf_dagutils.h -- header file for utility routines for manipulating DAGs 32 * 33 *************************************************************************/ 34 35 /* 36 * : 37 * Log: rf_dagutils.h,v 38 * Revision 1.19 1996/07/22 19:52:16 jimz 39 * switched node params to RF_DagParam_t, a union of 40 * a 64-bit int and a void *, for better portability 41 * attempted hpux port, but failed partway through for 42 * lack of a single C compiler capable of compiling all 43 * source files 44 * 45 * Revision 1.18 1996/07/15 17:22:18 jimz 46 * nit-pick code cleanup 47 * resolve stdlib problems on DEC OSF 48 * 49 * Revision 1.17 1996/06/10 11:55:47 jimz 50 * Straightened out some per-array/not-per-array distinctions, fixed 51 * a couple bugs related to confusion. Added shutdown lists. Removed 52 * layout shutdown function (now subsumed by shutdown lists). 53 * 54 * Revision 1.16 1996/06/06 17:27:46 jimz 55 * added another select mirror func (partitioning), changed names so dag 56 * creation routines can use the appropriate one 57 * 58 * fixed old idle mirror func to pick closest arm if queue lengths are equal 59 * 60 * Revision 1.15 1996/06/03 23:28:26 jimz 61 * more bugfixes 62 * check in tree to sync for IPDS runs with current bugfixes 63 * there still may be a problem with threads in the script test 64 * getting I/Os stuck- not trivially reproducible (runs ~50 times 65 * in a row without getting stuck) 66 * 67 * Revision 1.14 1996/05/27 18:56:37 jimz 68 * more code cleanup 69 * better typing 70 * compiles in all 3 environments 71 * 72 * Revision 1.13 1996/05/24 22:17:04 jimz 73 * continue code + namespace cleanup 74 * typed a bunch of flags 75 * 76 * Revision 1.12 1996/05/24 04:28:55 jimz 77 * release cleanup ckpt 78 * 79 * Revision 1.11 1996/05/23 21:46:35 jimz 80 * checkpoint in code cleanup (release prep) 81 * lots of types, function names have been fixed 82 * 83 * Revision 1.10 1996/05/23 00:33:23 jimz 84 * code cleanup: move all debug decls to rf_options.c, all extern 85 * debug decls to rf_options.h, all debug vars preceded by rf_ 86 * 87 * Revision 1.9 1996/05/18 19:51:34 jimz 88 * major code cleanup- fix syntax, make some types consistent, 89 * add prototypes, clean out dead code, et cetera 90 * 91 * Revision 1.8 1996/05/08 21:01:24 jimz 92 * fixed up enum type names that were conflicting with other 93 * enums and function names (ie, "panic") 94 * future naming trends will be towards RF_ and rf_ for 95 * everything raidframe-related 96 * 97 * Revision 1.7 1996/05/03 19:55:27 wvcii 98 * added misc routines from old dag creation files 99 * 100 * Revision 1.6 1995/12/01 15:57:28 root 101 * added copyright info 102 * 103 * Revision 1.5 1995/11/07 16:21:36 wvcii 104 * modified InitNode and InitNodeFromBuf prototypes 105 * 106 */ 107 108 #include "rf_types.h" 109 #include "rf_dagfuncs.h" 110 #include "rf_general.h" 111 112 #ifndef _RF__RF_DAGUTILS_H_ 113 #define _RF__RF_DAGUTILS_H_ 114 115 struct RF_RedFuncs_s { 116 int (*regular)(RF_DagNode_t *); 117 char *RegularName; 118 int (*simple)(RF_DagNode_t *); 119 char *SimpleName; 120 }; 121 122 extern RF_RedFuncs_t rf_xorFuncs; 123 extern RF_RedFuncs_t rf_xorRecoveryFuncs; 124 125 void rf_InitNode(RF_DagNode_t *node, RF_NodeStatus_t initstatus, 126 int commit, 127 int (*doFunc)(RF_DagNode_t *node), 128 int (*undoFunc)(RF_DagNode_t *node), 129 int (*wakeFunc)(RF_DagNode_t *node, int status), 130 int nSucc, int nAnte, int nParam, int nResult, 131 RF_DagHeader_t *hdr, char *name, RF_AllocListElem_t *alist); 132 133 void rf_FreeDAG(RF_DagHeader_t *dag_h); 134 135 RF_PropHeader_t *rf_MakePropListEntry(RF_DagHeader_t *dag_h, int resultNum, 136 int paramNum, RF_PropHeader_t *next, RF_AllocListElem_t *allocList); 137 138 int rf_ConfigureDAGs(RF_ShutdownList_t **listp); 139 140 RF_DagHeader_t *rf_AllocDAGHeader(void); 141 142 void rf_FreeDAGHeader(RF_DagHeader_t *dh); 143 144 void *rf_AllocBuffer(RF_Raid_t *raidPtr, RF_DagHeader_t *dag_h, 145 RF_PhysDiskAddr_t *pda, RF_AllocListElem_t *allocList); 146 147 char *rf_NodeStatusString(RF_DagNode_t *node); 148 149 void rf_PrintNodeInfoString(RF_DagNode_t *node); 150 151 int rf_AssignNodeNums(RF_DagHeader_t *dag_h); 152 153 int rf_RecurAssignNodeNums(RF_DagNode_t *node, int num, int unvisited); 154 155 void rf_ResetDAGHeaderPointers(RF_DagHeader_t *dag_h, RF_DagHeader_t *newptr); 156 157 void rf_RecurResetDAGHeaderPointers(RF_DagNode_t *node, RF_DagHeader_t *newptr); 158 159 void rf_PrintDAGList(RF_DagHeader_t *dag_h); 160 161 int rf_ValidateDAG(RF_DagHeader_t *dag_h); 162 163 void rf_redirect_asm(RF_Raid_t *raidPtr, RF_AccessStripeMap_t *asmap); 164 165 void rf_MapUnaccessedPortionOfStripe(RF_Raid_t *raidPtr, 166 RF_RaidLayout_t *layoutPtr, 167 RF_AccessStripeMap_t *asmap, RF_DagHeader_t *dag_h, 168 RF_AccessStripeMapHeader_t **new_asm_h, int *nRodNodes, char **sosBuffer, 169 char **eosBuffer, RF_AllocListElem_t *allocList); 170 171 int rf_PDAOverlap(RF_RaidLayout_t *layoutPtr, RF_PhysDiskAddr_t *src, 172 RF_PhysDiskAddr_t *dest); 173 174 void rf_GenerateFailedAccessASMs(RF_Raid_t *raidPtr, 175 RF_AccessStripeMap_t *asmap, RF_PhysDiskAddr_t *failedPDA, 176 RF_DagHeader_t *dag_h, RF_AccessStripeMapHeader_t **new_asm_h, 177 int *nXorBufs, char **rpBufPtr, char *overlappingPDAs, 178 RF_AllocListElem_t *allocList); 179 180 /* flags used by RangeRestrictPDA */ 181 #define RF_RESTRICT_NOBUFFER 0 182 #define RF_RESTRICT_DOBUFFER 1 183 184 void rf_RangeRestrictPDA(RF_Raid_t *raidPtr, RF_PhysDiskAddr_t *src, 185 RF_PhysDiskAddr_t *dest, int dobuffer, int doraidaddr); 186 187 int rf_compute_workload_shift(RF_Raid_t *raidPtr, RF_PhysDiskAddr_t *pda); 188 void rf_SelectMirrorDiskIdle(RF_DagNode_t *node); 189 void rf_SelectMirrorDiskPartition(RF_DagNode_t *node); 190 191 #endif /* !_RF__RF_DAGUTILS_H_ */ 192
Indexes created Tue Sep 23 23:09:58 GMT 2025