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/*-------------------------------------------------------------------------
*
* gindesc.c
* rmgr descriptor routines for access/transam/gin/ginxlog.c
*
* Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* src/backend/access/rmgrdesc/gindesc.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "access/gin_private.h"
#include "lib/stringinfo.h"
#include "storage/relfilenode.h"
static void
desc_node(StringInfo buf, RelFileNode node, BlockNumber blkno)
{
appendStringInfo(buf, "node: %u/%u/%u blkno: %u",
node.spcNode, node.dbNode, node.relNode, blkno);
}
void
gin_desc(StringInfo buf, uint8 xl_info, char *rec)
{
uint8 info = xl_info & ~XLR_INFO_MASK;
switch (info)
{
case XLOG_GIN_CREATE_INDEX:
appendStringInfoString(buf, "Create index, ");
desc_node(buf, *(RelFileNode *) rec, GIN_ROOT_BLKNO);
break;
case XLOG_GIN_CREATE_PTREE:
appendStringInfoString(buf, "Create posting tree, ");
desc_node(buf, ((ginxlogCreatePostingTree *) rec)->node, ((ginxlogCreatePostingTree *) rec)->blkno);
break;
case XLOG_GIN_INSERT:
{
ginxlogInsert *xlrec = (ginxlogInsert *) rec;
char *payload = rec + sizeof(ginxlogInsert);
appendStringInfoString(buf, "Insert item, ");
desc_node(buf, xlrec->node, xlrec->blkno);
appendStringInfo(buf, " offset: %u isdata: %c isleaf: %c",
xlrec->offset,
(xlrec->flags & GIN_INSERT_ISDATA) ? 'T' : 'F',
(xlrec->flags & GIN_INSERT_ISLEAF) ? 'T' : 'F');
if (!(xlrec->flags & GIN_INSERT_ISLEAF))
{
BlockNumber leftChildBlkno;
BlockNumber rightChildBlkno;
memcpy(&leftChildBlkno, payload, sizeof(BlockNumber));
payload += sizeof(BlockNumber);
memcpy(&rightChildBlkno, payload, sizeof(BlockNumber));
payload += sizeof(BlockNumber);
appendStringInfo(buf, " children: %u/%u",
leftChildBlkno, rightChildBlkno);
}
if (!(xlrec->flags & GIN_INSERT_ISDATA))
appendStringInfo(buf, " isdelete: %c",
(((ginxlogInsertEntry *) payload)->isDelete) ? 'T' : 'F');
else if (xlrec->flags & GIN_INSERT_ISLEAF)
appendStringInfo(buf, " nitem: %u",
(((ginxlogInsertDataLeaf *) payload)->nitem) ? 'T' : 'F');
else
appendStringInfo(buf, " pitem: %u-%u/%u",
PostingItemGetBlockNumber((PostingItem *) payload),
ItemPointerGetBlockNumber(&((PostingItem *) payload)->key),
ItemPointerGetOffsetNumber(&((PostingItem *) payload)->key));
}
break;
case XLOG_GIN_SPLIT:
appendStringInfoString(buf, "Page split, ");
desc_node(buf, ((ginxlogSplit *) rec)->node, ((ginxlogSplit *) rec)->lblkno);
appendStringInfo(buf, " isrootsplit: %c", (((ginxlogSplit *) rec)->flags & GIN_SPLIT_ROOT) ? 'T' : 'F');
break;
case XLOG_GIN_VACUUM_PAGE:
appendStringInfoString(buf, "Vacuum page, ");
desc_node(buf, ((ginxlogVacuumPage *) rec)->node, ((ginxlogVacuumPage *) rec)->blkno);
break;
case XLOG_GIN_DELETE_PAGE:
appendStringInfoString(buf, "Delete page, ");
desc_node(buf, ((ginxlogDeletePage *) rec)->node, ((ginxlogDeletePage *) rec)->blkno);
break;
case XLOG_GIN_UPDATE_META_PAGE:
appendStringInfoString(buf, "Update metapage, ");
desc_node(buf, ((ginxlogUpdateMeta *) rec)->node, GIN_METAPAGE_BLKNO);
break;
case XLOG_GIN_INSERT_LISTPAGE:
appendStringInfoString(buf, "Insert new list page, ");
desc_node(buf, ((ginxlogInsertListPage *) rec)->node, ((ginxlogInsertListPage *) rec)->blkno);
break;
case XLOG_GIN_DELETE_LISTPAGE:
appendStringInfo(buf, "Delete list pages (%d), ", ((ginxlogDeleteListPages *) rec)->ndeleted);
desc_node(buf, ((ginxlogDeleteListPages *) rec)->node, GIN_METAPAGE_BLKNO);
break;
default:
appendStringInfo(buf, "unknown gin op code %u", info);
break;
}
}
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