granicus.if.org Git - postgresql/blob - src/backend/access/rmgrdesc/spgdesc.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  * spgdesc.c
   4  *        rmgr descriptor routines for access/spgist/spgxlog.c
   5  *
   6  * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
   7  * Portions Copyright (c) 1994, Regents of the University of California
   8  *
   9  *
  10  * IDENTIFICATION
  11  *        src/backend/access/rmgrdesc/spgdesc.c
  12  *
  13  *-------------------------------------------------------------------------
  14  */
  15 #include "postgres.h"
  16
  17 #include "access/spgxlog.h"
  18
  19 void
  20 spg_desc(StringInfo buf, XLogReaderState *record)
  21 {
  22         char       *rec = XLogRecGetData(record);
  23         uint8           info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
  24
  25         switch (info)
  26         {
  27                 case XLOG_SPGIST_ADD_LEAF:
  28                         {
  29                                 spgxlogAddLeaf *xlrec = (spgxlogAddLeaf *) rec;
  30
  31                                 appendStringInfoString(buf, "add leaf to page");
  32                                 appendStringInfo(buf, "; off %u; headoff %u; parentoff %u",
  33                                                                  xlrec->offnumLeaf, xlrec->offnumHeadLeaf,
  34                                                                  xlrec->offnumParent);
  35                                 if (xlrec->newPage)
  36                                         appendStringInfoString(buf, " (newpage)");
  37                                 if (xlrec->storesNulls)
  38                                         appendStringInfoString(buf, " (nulls)");
  39                         }
  40                         break;
  41                 case XLOG_SPGIST_MOVE_LEAFS:
  42                         appendStringInfo(buf, "%u leafs",
  43                                                          ((spgxlogMoveLeafs *) rec)->nMoves);
  44                         break;
  45                 case XLOG_SPGIST_ADD_NODE:
  46                         appendStringInfo(buf, "off %u",
  47                                                          ((spgxlogAddNode *) rec)->offnum);
  48                         break;
  49                 case XLOG_SPGIST_SPLIT_TUPLE:
  50                         appendStringInfo(buf, "prefix off: %u, postfix off: %u (same %d, new %d)",
  51                                                          ((spgxlogSplitTuple *) rec)->offnumPrefix,
  52                                                          ((spgxlogSplitTuple *) rec)->offnumPostfix,
  53                                                          ((spgxlogSplitTuple *) rec)->postfixBlkSame,
  54                                                          ((spgxlogSplitTuple *) rec)->newPage
  55                                 );
  56                         break;
  57                 case XLOG_SPGIST_PICKSPLIT:
  58                         {
  59                                 spgxlogPickSplit *xlrec = (spgxlogPickSplit *) rec;
  60
  61                                 appendStringInfo(buf, "ndel %u; nins %u",
  62                                                                  xlrec->nDelete, xlrec->nInsert);
  63                                 if (xlrec->innerIsParent)
  64                                         appendStringInfoString(buf, " (innerIsParent)");
  65                                 if (xlrec->isRootSplit)
  66                                         appendStringInfoString(buf, " (isRootSplit)");
  67                         }
  68                         break;
  69                 case XLOG_SPGIST_VACUUM_LEAF:
  70                         /* no further information */
  71                         break;
  72                 case XLOG_SPGIST_VACUUM_ROOT:
  73                         /* no further information */
  74                         break;
  75                 case XLOG_SPGIST_VACUUM_REDIRECT:
  76                         appendStringInfo(buf, "newest XID %u",
  77                                                          ((spgxlogVacuumRedirect *) rec)->newestRedirectXid);
  78                         break;
  79         }
  80 }
  81
  82 const char *
  83 spg_identify(uint8 info)
  84 {
  85         const char *id = NULL;
  86
  87         switch (info & ~XLR_INFO_MASK)
  88         {
  89                 case XLOG_SPGIST_ADD_LEAF:
  90                         id = "ADD_LEAF";
  91                         break;
  92                 case XLOG_SPGIST_MOVE_LEAFS:
  93                         id = "MOVE_LEAFS";
  94                         break;
  95                 case XLOG_SPGIST_ADD_NODE:
  96                         id = "ADD_NODE";
  97                         break;
  98                 case XLOG_SPGIST_SPLIT_TUPLE:
  99                         id = "SPLIT_TUPLE";
 100                         break;
 101                 case XLOG_SPGIST_PICKSPLIT:
 102                         id = "PICKSPLIT";
 103                         break;
 104                 case XLOG_SPGIST_VACUUM_LEAF:
 105                         id = "VACUUM_LEAF";
 106                         break;
 107                 case XLOG_SPGIST_VACUUM_ROOT:
 108                         id = "VACUUM_ROOT";
 109                         break;
 110                 case XLOG_SPGIST_VACUUM_REDIRECT:
 111                         id = "VACUUM_REDIRECT";
 112                         break;
 113         }
 114
 115         return id;
 116 }