DIRECTORYRope,YggEnvironment,YggInternal,YggLog;YggLogRep: DEFINITIONS =BEGINRecordID: TYPE = YggLog.RecordID;RecordType: TYPE = YggLog.RecordType;PageVersion: TYPE = [0..1];Header: TYPE = MACHINE DEPENDENT RECORD [valid: BOOL,version: PageVersion,hasContinuation: BOOL,isContinuation: BOOL,unused1: [0..7777B] _ 0,unused2: CARD16 _ 0,nWords: INT];RecordTypeHeader: TYPE = MACHINE DEPENDENT RECORD [pad: [0..1] _ 0,type: RecordType ];NoopRecord: TYPE = MACHINE DEPENDENT RECORD [pad: [0..1] _ 0,type: RecordType _ noop,fillPage: ARRAY [0..fillCount) OF WORD _ ALL[0] ];fillCount: CARDINAL = 512-SIZE[Header]-SIZE[RecordTypeHeader];CheckpointCompleteRecord: TYPE = MACHINE DEPENDENT RECORD [pad: [0..1] _ 0,type: RecordType _ checkpointComplete,thisRecordID: RecordID _ TRASH,startAnalysisRecordID: RecordID,keepRecordID: RecordID,myFileStore: Rope.ROPE];TransactionHeader: TYPE = MACHINE DEPENDENT RECORD [pad: [0..1] _ 0,type: RecordType,transID: YggEnvironment.TransID ];RestartRecord: TYPE = MACHINE DEPENDENT RECORD [wordNumberForCheckpointCompleteRecord: YggEnvironment.WordNumber,recordIDForCheckpointCompleteRecord: RecordID ];END.CHANGE LOGCreated by MBrown on May 24, 1982 10:16 pm   h  YggLogRep.mesaCopyright c 1985, 1987 by Xerox Corporation.  All rights reserved.Defines storage format of disk log.Last edited byMBrown on January 30, 1984 10:04:27 am PSTHauser, March 8, 1985 10:58:42 am PSTCarl Hauser, October 4, 1985 1:36:20 pm PDTBob Hagmann March 23, 1988 9:17:10 am PSTincludes SIZE[Header] words for the header itselfA Header record with nWords=0 and arbitrary other values  is used to terminate a page.written in restart file, not in logHauser, March 8, 1985 10:58:27 am PSTNodified, added copyright.Carl Hauser, October 4, 1985 1:36:07 pm PDTChange "Log" to "AlpineLog"ÊO  ˜ šœ™Icodešœ
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