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) 1996-2015, 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/nbtree.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                 case XLOG_BTREE_SPLIT_L_ROOT:
  39                 case XLOG_BTREE_SPLIT_R_ROOT:
  40                         {
  41                                 xl_btree_split *xlrec = (xl_btree_split *) rec;
  42
  43                                 appendStringInfo(buf, "level %u, firstright %d",
  44                                                                  xlrec->level, xlrec->firstright);
  45                                 break;
  46                         }
  47                 case XLOG_BTREE_VACUUM:
  48                         {
  49                                 xl_btree_vacuum *xlrec = (xl_btree_vacuum *) rec;
  50
  51                                 appendStringInfo(buf, "lastBlockVacuumed %u",
  52                                                                  xlrec->lastBlockVacuumed);
  53                                 break;
  54                         }
  55                 case XLOG_BTREE_DELETE:
  56                         {
  57                                 xl_btree_delete *xlrec = (xl_btree_delete *) rec;
  58
  59                                 appendStringInfo(buf, "%d items", xlrec->nitems);
  60                                 break;
  61                         }
  62                 case XLOG_BTREE_MARK_PAGE_HALFDEAD:
  63                         {
  64                                 xl_btree_mark_page_halfdead *xlrec = (xl_btree_mark_page_halfdead *) rec;
  65
  66                                 appendStringInfo(buf, "topparent %u; leaf %u; left %u; right %u",
  67                                                                  xlrec->topparent, xlrec->leafblk, xlrec->leftblk, xlrec->rightblk);
  68                                 break;
  69                         }
  70                 case XLOG_BTREE_UNLINK_PAGE_META:
  71                 case XLOG_BTREE_UNLINK_PAGE:
  72                         {
  73                                 xl_btree_unlink_page *xlrec = (xl_btree_unlink_page *) rec;
  74
  75                                 appendStringInfo(buf, "left %u; right %u; btpo_xact %u; ",
  76                                                                  xlrec->leftsib, xlrec->rightsib,
  77                                                                  xlrec->btpo_xact);
  78                                 appendStringInfo(buf, "leafleft %u; leafright %u; topparent %u",
  79                                                                  xlrec->leafleftsib, xlrec->leafrightsib,
  80                                                                  xlrec->topparent);
  81                                 break;
  82                         }
  83                 case XLOG_BTREE_NEWROOT:
  84                         {
  85                                 xl_btree_newroot *xlrec = (xl_btree_newroot *) rec;
  86
  87                                 appendStringInfo(buf, "lev %u", xlrec->level);
  88                                 break;
  89                         }
  90                 case XLOG_BTREE_REUSE_PAGE:
  91                         {
  92                                 xl_btree_reuse_page *xlrec = (xl_btree_reuse_page *) rec;
  93
  94                                 appendStringInfo(buf, "rel %u/%u/%u; latestRemovedXid %u",
  95                                                                  xlrec->node.spcNode, xlrec->node.dbNode,
  96                                                            xlrec->node.relNode, xlrec->latestRemovedXid);
  97                                 break;
  98                         }
  99         }
 100 }
 101
 102 const char *
 103 btree_identify(uint8 info)
 104 {
 105         const char *id = NULL;
 106
 107         switch (info & ~XLR_INFO_MASK)
 108         {
 109                 case XLOG_BTREE_INSERT_LEAF:
 110                         id = "INSERT_LEAF";
 111                         break;
 112                 case XLOG_BTREE_INSERT_UPPER:
 113                         id = "INSERT_UPPER";
 114                         break;
 115                 case XLOG_BTREE_INSERT_META:
 116                         id = "INSERT_META";
 117                         break;
 118                 case XLOG_BTREE_SPLIT_L:
 119                         id = "SPLIT_L";
 120                         break;
 121                 case XLOG_BTREE_SPLIT_R:
 122                         id = "SPLIT_R";
 123                         break;
 124                 case XLOG_BTREE_SPLIT_L_ROOT:
 125                         id = "SPLIT_L_ROOT";
 126                         break;
 127                 case XLOG_BTREE_SPLIT_R_ROOT:
 128                         id = "SPLIT_R_ROOT";
 129                         break;
 130                 case XLOG_BTREE_VACUUM:
 131                         id = "VACUUM";
 132                         break;
 133                 case XLOG_BTREE_DELETE:
 134                         id = "DELETE";
 135                         break;
 136                 case XLOG_BTREE_MARK_PAGE_HALFDEAD:
 137                         id = "MARK_PAGE_HALFDEAD";
 138                         break;
 139                 case XLOG_BTREE_UNLINK_PAGE:
 140                         id = "UNLINK_PAGE";
 141                         break;
 142                 case XLOG_BTREE_UNLINK_PAGE_META:
 143                         id = "UNLINK_PAGE_META";
 144                         break;
 145                 case XLOG_BTREE_NEWROOT:
 146                         id = "NEWROOT";
 147                         break;
 148                 case XLOG_BTREE_REUSE_PAGE:
 149                         id = "REUSE_PAGE";
 150                         break;
 151         }
 152
 153         return id;
 154 }