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

   1 /*-------------------------------------------------------------------------
   2  *
   3  * nbtdesc.c
   4  *        rmgr descriptor routines for access/nbtree/nbtxlog.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/nbtdesc.c
  12  *
  13  *-------------------------------------------------------------------------
  14  */
  15 #include "postgres.h"
  16
  17 #include "access/nbtxlog.h"
  18
  19 void
  20 btree_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_BTREE_INSERT_LEAF:
  28                 case XLOG_BTREE_INSERT_UPPER:
  29                 case XLOG_BTREE_INSERT_META:
  30                         {
  31                                 xl_btree_insert *xlrec = (xl_btree_insert *) rec;
  32
  33                                 appendStringInfo(buf, "off %u", xlrec->offnum);
  34                                 break;
  35                         }
  36                 case XLOG_BTREE_SPLIT_L:
  37                 case XLOG_BTREE_SPLIT_R:
  38                         {
  39                                 xl_btree_split *xlrec = (xl_btree_split *) rec;
  40
  41                                 appendStringInfo(buf, "level %u, firstright %d",
  42                                                                  xlrec->level, xlrec->firstright);
  43                                 break;
  44                         }
  45                 case XLOG_BTREE_VACUUM:
  46                         {
  47                                 xl_btree_vacuum *xlrec = (xl_btree_vacuum *) rec;
  48
  49                                 appendStringInfo(buf, "lastBlockVacuumed %u",
  50                                                                  xlrec->lastBlockVacuumed);
  51                                 break;
  52                         }
  53                 case XLOG_BTREE_DELETE:
  54                         {
  55                                 xl_btree_delete *xlrec = (xl_btree_delete *) rec;
  56
  57                                 appendStringInfo(buf, "%d items", xlrec->nitems);
  58                                 break;
  59                         }
  60                 case XLOG_BTREE_MARK_PAGE_HALFDEAD:
  61                         {
  62                                 xl_btree_mark_page_halfdead *xlrec = (xl_btree_mark_page_halfdead *) rec;
  63
  64                                 appendStringInfo(buf, "topparent %u; leaf %u; left %u; right %u",
  65                                                                  xlrec->topparent, xlrec->leafblk, xlrec->leftblk, xlrec->rightblk);
  66                                 break;
  67                         }
  68                 case XLOG_BTREE_UNLINK_PAGE_META:
  69                 case XLOG_BTREE_UNLINK_PAGE:
  70                         {
  71                                 xl_btree_unlink_page *xlrec = (xl_btree_unlink_page *) rec;
  72
  73                                 appendStringInfo(buf, "left %u; right %u; btpo_xact %u; ",
  74                                                                  xlrec->leftsib, xlrec->rightsib,
  75                                                                  xlrec->btpo_xact);
  76                                 appendStringInfo(buf, "leafleft %u; leafright %u; topparent %u",
  77                                                                  xlrec->leafleftsib, xlrec->leafrightsib,
  78                                                                  xlrec->topparent);
  79                                 break;
  80                         }
  81                 case XLOG_BTREE_NEWROOT:
  82                         {
  83                                 xl_btree_newroot *xlrec = (xl_btree_newroot *) rec;
  84
  85                                 appendStringInfo(buf, "lev %u", xlrec->level);
  86                                 break;
  87                         }
  88                 case XLOG_BTREE_REUSE_PAGE:
  89                         {
  90                                 xl_btree_reuse_page *xlrec = (xl_btree_reuse_page *) rec;
  91
  92                                 appendStringInfo(buf, "rel %u/%u/%u; latestRemovedXid %u",
  93                                                                  xlrec->node.spcNode, xlrec->node.dbNode,
  94                                                                  xlrec->node.relNode, xlrec->latestRemovedXid);
  95                                 break;
  96                         }
  97                 case XLOG_BTREE_META_CLEANUP:
  98                         {
  99                                 xl_btree_metadata *xlrec = (xl_btree_metadata *) rec;
 100
 101                                 appendStringInfo(buf, "oldest_btpo_xact %u; last_cleanup_num_heap_tuples: %f",
 102                                                                  xlrec->oldest_btpo_xact,
 103                                                                  xlrec->last_cleanup_num_heap_tuples);
 104                                 break;
 105                         }
 106         }
 107 }
 108
 109 const char *
 110 btree_identify(uint8 info)
 111 {
 112         const char *id = NULL;
 113
 114         switch (info & ~XLR_INFO_MASK)
 115         {
 116                 case XLOG_BTREE_INSERT_LEAF:
 117                         id = "INSERT_LEAF";
 118                         break;
 119                 case XLOG_BTREE_INSERT_UPPER:
 120                         id = "INSERT_UPPER";
 121                         break;
 122                 case XLOG_BTREE_INSERT_META:
 123                         id = "INSERT_META";
 124                         break;
 125                 case XLOG_BTREE_SPLIT_L:
 126                         id = "SPLIT_L";
 127                         break;
 128                 case XLOG_BTREE_SPLIT_R:
 129                         id = "SPLIT_R";
 130                         break;
 131                 case XLOG_BTREE_VACUUM:
 132                         id = "VACUUM";
 133                         break;
 134                 case XLOG_BTREE_DELETE:
 135                         id = "DELETE";
 136                         break;
 137                 case XLOG_BTREE_MARK_PAGE_HALFDEAD:
 138                         id = "MARK_PAGE_HALFDEAD";
 139                         break;
 140                 case XLOG_BTREE_UNLINK_PAGE:
 141                         id = "UNLINK_PAGE";
 142                         break;
 143                 case XLOG_BTREE_UNLINK_PAGE_META:
 144                         id = "UNLINK_PAGE_META";
 145                         break;
 146                 case XLOG_BTREE_NEWROOT:
 147                         id = "NEWROOT";
 148                         break;
 149                 case XLOG_BTREE_REUSE_PAGE:
 150                         id = "REUSE_PAGE";
 151                         break;
 152                 case XLOG_BTREE_META_CLEANUP:
 153                         id = "META_CLEANUP";
 154                         break;
 155         }
 156
 157         return id;
 158 }