granicus.if.org Git - postgresql/blob - src/include/utils/relmapper.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * relmapper.h
   4  *        Catalog-to-filenode mapping
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * src/include/utils/relmapper.h
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef RELMAPPER_H
  15 #define RELMAPPER_H
  16
  17 #include "access/xlog.h"
  18
  19 /* ----------------
  20  *              relmap-related XLOG entries
  21  * ----------------
  22  */
  23
  24 #define XLOG_RELMAP_UPDATE              0x00
  25
  26 typedef struct xl_relmap_update
  27 {
  28         Oid                     dbid;                   /* database ID, or 0 for shared map */
  29         Oid                     tsid;                   /* database's tablespace, or pg_global */
  30         int32           nbytes;                 /* size of relmap data */
  31         char            data[1];                /* VARIABLE LENGTH ARRAY */
  32 } xl_relmap_update;
  33
  34 #define MinSizeOfRelmapUpdate offsetof(xl_relmap_update, data)
  35
  36
  37 extern Oid      RelationMapOidToFilenode(Oid relationId, bool shared);
  38
  39 extern Oid      RelationMapFilenodeToOid(Oid relationId, bool shared);
  40
  41 extern void RelationMapUpdateMap(Oid relationId, Oid fileNode, bool shared,
  42                                          bool immediate);
  43
  44 extern void RelationMapRemoveMapping(Oid relationId);
  45
  46 extern void RelationMapInvalidate(bool shared);
  47 extern void RelationMapInvalidateAll(void);
  48
  49 extern void AtCCI_RelationMap(void);
  50 extern void AtEOXact_RelationMap(bool isCommit);
  51 extern void AtPrepare_RelationMap(void);
  52
  53 extern void CheckPointRelationMap(void);
  54
  55 extern void RelationMapFinishBootstrap(void);
  56
  57 extern void RelationMapInitialize(void);
  58 extern void RelationMapInitializePhase2(void);
  59 extern void RelationMapInitializePhase3(void);
  60
  61 extern void relmap_redo(XLogRecPtr lsn, XLogRecord *record);
  62 extern void relmap_desc(StringInfo buf, uint8 xl_info, char *rec);
  63
  64 #endif   /* RELMAPPER_H */