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) 1996-2017, 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/xlogreader.h"
  18 #include "lib/stringinfo.h"
  19
  20 /* ----------------
  21  *              relmap-related XLOG entries
  22  * ----------------
  23  */
  24
  25 #define XLOG_RELMAP_UPDATE              0x00
  26
  27 typedef struct xl_relmap_update
  28 {
  29         Oid                     dbid;                   /* database ID, or 0 for shared map */
  30         Oid                     tsid;                   /* database's tablespace, or pg_global */
  31         int32           nbytes;                 /* size of relmap data */
  32         char            data[FLEXIBLE_ARRAY_MEMBER];
  33 } xl_relmap_update;
  34
  35 #define MinSizeOfRelmapUpdate offsetof(xl_relmap_update, data)
  36
  37
  38 extern Oid      RelationMapOidToFilenode(Oid relationId, bool shared);
  39
  40 extern Oid      RelationMapFilenodeToOid(Oid relationId, bool shared);
  41
  42 extern void RelationMapUpdateMap(Oid relationId, Oid fileNode, bool shared,
  43                                          bool immediate);
  44
  45 extern void RelationMapRemoveMapping(Oid relationId);
  46
  47 extern void RelationMapInvalidate(bool shared);
  48 extern void RelationMapInvalidateAll(void);
  49
  50 extern void AtCCI_RelationMap(void);
  51 extern void AtEOXact_RelationMap(bool isCommit);
  52 extern void AtPrepare_RelationMap(void);
  53
  54 extern void CheckPointRelationMap(void);
  55
  56 extern void RelationMapFinishBootstrap(void);
  57
  58 extern void RelationMapInitialize(void);
  59 extern void RelationMapInitializePhase2(void);
  60 extern void RelationMapInitializePhase3(void);
  61
  62 extern void relmap_redo(XLogReaderState *record);
  63 extern void relmap_desc(StringInfo buf, XLogReaderState *record);
  64 extern const char *relmap_identify(uint8 info);
  65
  66 #endif   /* RELMAPPER_H */