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Commit1c453cf

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Show more detail in nbtree rmgr descriptions.
Show a detailed description of the page offset number arrays that appearin certain nbtree WAL records.Also brings nbtree desc routines in line with the guidelines establishedby recent commit7d8219a.Author: Melanie Plageman <melanieplageman@gmail.com>Reviewed-By: Peter Geoghegan <pg@bowt.ie>Discussion:https://postgr.es/m/flat/20230109215842.fktuhesvayno6o4g%40awork3.anarazel.de
1 parentce5e234 commit1c453cf

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3 files changed

+83
-11
lines changed

3 files changed

+83
-11
lines changed

‎src/backend/access/rmgrdesc/nbtdesc.c‎

Lines changed: 76 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -15,6 +15,61 @@
1515
#include"postgres.h"
1616

1717
#include"access/nbtxlog.h"
18+
#include"access/rmgrdesc_utils.h"
19+
20+
staticvoidbtree_del_desc(StringInfobuf,char*block_data,uint16ndeleted,
21+
uint16nupdated);
22+
staticvoidbtree_update_elem_desc(StringInfobuf,void*update,void*data);
23+
24+
staticvoid
25+
btree_del_desc(StringInfobuf,char*block_data,uint16ndeleted,
26+
uint16nupdated)
27+
{
28+
OffsetNumber*updatedoffsets;
29+
xl_btree_update*updates;
30+
OffsetNumber*data= (OffsetNumber*)block_data;
31+
32+
appendStringInfoString(buf,", deleted:");
33+
array_desc(buf,data,sizeof(OffsetNumber),ndeleted,
34+
&offset_elem_desc,NULL);
35+
36+
appendStringInfoString(buf,", updated:");
37+
array_desc(buf,data,sizeof(OffsetNumber),nupdated,
38+
&offset_elem_desc,NULL);
39+
40+
if (nupdated <=0)
41+
return;
42+
43+
updatedoffsets= (OffsetNumber*)
44+
((char*)data+ndeleted*sizeof(OffsetNumber));
45+
updates= (xl_btree_update*) ((char*)updatedoffsets+
46+
nupdated*
47+
sizeof(OffsetNumber));
48+
49+
appendStringInfoString(buf,", updates:");
50+
array_desc(buf,updates,sizeof(xl_btree_update),
51+
nupdated,&btree_update_elem_desc,
52+
&updatedoffsets);
53+
}
54+
55+
staticvoid
56+
btree_update_elem_desc(StringInfobuf,void*update,void*data)
57+
{
58+
xl_btree_update*new_update= (xl_btree_update*)update;
59+
OffsetNumber*updated_offset=*((OffsetNumber**)data);
60+
61+
appendStringInfo(buf,"{ updated offset: %u, ndeleted tids: %u",
62+
*updated_offset,new_update->ndeletedtids);
63+
64+
appendStringInfoString(buf,", deleted tids:");
65+
66+
array_desc(buf, (char*)new_update+SizeOfBtreeUpdate,sizeof(uint16),
67+
new_update->ndeletedtids,&uint16_elem_desc,NULL);
68+
69+
updated_offset++;
70+
71+
appendStringInfo(buf," }");
72+
}
1873

1974
void
2075
btree_desc(StringInfobuf,XLogReaderState*record)
@@ -31,15 +86,15 @@ btree_desc(StringInfo buf, XLogReaderState *record)
3186
{
3287
xl_btree_insert*xlrec= (xl_btree_insert*)rec;
3388

34-
appendStringInfo(buf,"off %u",xlrec->offnum);
89+
appendStringInfo(buf,"off: %u",xlrec->offnum);
3590
break;
3691
}
3792
caseXLOG_BTREE_SPLIT_L:
3893
caseXLOG_BTREE_SPLIT_R:
3994
{
4095
xl_btree_split*xlrec= (xl_btree_split*)rec;
4196

42-
appendStringInfo(buf,"level %u, firstrightoff %d, newitemoff %d, postingoff %d",
97+
appendStringInfo(buf,"level: %u, firstrightoff: %d, newitemoff: %d, postingoff: %d",
4398
xlrec->level,xlrec->firstrightoff,
4499
xlrec->newitemoff,xlrec->postingoff);
45100
break;
@@ -48,31 +103,41 @@ btree_desc(StringInfo buf, XLogReaderState *record)
48103
{
49104
xl_btree_dedup*xlrec= (xl_btree_dedup*)rec;
50105

51-
appendStringInfo(buf,"nintervals %u",xlrec->nintervals);
106+
appendStringInfo(buf,"nintervals: %u",xlrec->nintervals);
52107
break;
53108
}
54109
caseXLOG_BTREE_VACUUM:
55110
{
56111
xl_btree_vacuum*xlrec= (xl_btree_vacuum*)rec;
57112

58-
appendStringInfo(buf,"ndeleted %u; nupdated %u",
113+
appendStringInfo(buf,"ndeleted: %u, nupdated: %u",
59114
xlrec->ndeleted,xlrec->nupdated);
115+
116+
if (!XLogRecHasBlockImage(record,0))
117+
btree_del_desc(buf,XLogRecGetBlockData(record,0,NULL),
118+
xlrec->ndeleted,xlrec->nupdated);
119+
60120
break;
61121
}
62122
caseXLOG_BTREE_DELETE:
63123
{
64124
xl_btree_delete*xlrec= (xl_btree_delete*)rec;
65125

66-
appendStringInfo(buf,"snapshotConflictHorizon %u; ndeleted %u; nupdated %u",
126+
appendStringInfo(buf,"snapshotConflictHorizon: %u, ndeleted: %u, nupdated: %u",
67127
xlrec->snapshotConflictHorizon,
68128
xlrec->ndeleted,xlrec->nupdated);
129+
130+
if (!XLogRecHasBlockImage(record,0))
131+
btree_del_desc(buf,XLogRecGetBlockData(record,0,NULL),
132+
xlrec->ndeleted,xlrec->nupdated);
133+
69134
break;
70135
}
71136
caseXLOG_BTREE_MARK_PAGE_HALFDEAD:
72137
{
73138
xl_btree_mark_page_halfdead*xlrec= (xl_btree_mark_page_halfdead*)rec;
74139

75-
appendStringInfo(buf,"topparent %u; leaf %u; left %u; right %u",
140+
appendStringInfo(buf,"topparent: %u; leaf: %u; left: %u; right: %u",
76141
xlrec->topparent,xlrec->leafblk,xlrec->leftblk,xlrec->rightblk);
77142
break;
78143
}
@@ -81,11 +146,11 @@ btree_desc(StringInfo buf, XLogReaderState *record)
81146
{
82147
xl_btree_unlink_page*xlrec= (xl_btree_unlink_page*)rec;
83148

84-
appendStringInfo(buf,"left %u; right %u; level %u; safexid %u:%u; ",
149+
appendStringInfo(buf,"left: %u; right: %u; level: %u; safexid: %u:%u; ",
85150
xlrec->leftsib,xlrec->rightsib,xlrec->level,
86151
EpochFromFullTransactionId(xlrec->safexid),
87152
XidFromFullTransactionId(xlrec->safexid));
88-
appendStringInfo(buf,"leafleft %u; leafright %u; leaftopparent %u",
153+
appendStringInfo(buf,"leafleft: %u; leafright: %u; leaftopparent: %u",
89154
xlrec->leafleftsib,xlrec->leafrightsib,
90155
xlrec->leaftopparent);
91156
break;
@@ -94,14 +159,14 @@ btree_desc(StringInfo buf, XLogReaderState *record)
94159
{
95160
xl_btree_newroot*xlrec= (xl_btree_newroot*)rec;
96161

97-
appendStringInfo(buf,"lev %u",xlrec->level);
162+
appendStringInfo(buf,"lev: %u",xlrec->level);
98163
break;
99164
}
100165
caseXLOG_BTREE_REUSE_PAGE:
101166
{
102167
xl_btree_reuse_page*xlrec= (xl_btree_reuse_page*)rec;
103168

104-
appendStringInfo(buf,"rel %u/%u/%u; snapshotConflictHorizon %u:%u",
169+
appendStringInfo(buf,"rel: %u/%u/%u, snapshotConflictHorizon: %u:%u",
105170
xlrec->locator.spcOid,xlrec->locator.dbOid,
106171
xlrec->locator.relNumber,
107172
EpochFromFullTransactionId(xlrec->snapshotConflictHorizon),
@@ -114,7 +179,7 @@ btree_desc(StringInfo buf, XLogReaderState *record)
114179

115180
xlrec= (xl_btree_metadata*)XLogRecGetBlockData(record,0,
116181
NULL);
117-
appendStringInfo(buf,"last_cleanup_num_delpages %u",
182+
appendStringInfo(buf,"last_cleanup_num_delpages: %u",
118183
xlrec->last_cleanup_num_delpages);
119184
break;
120185
}

‎src/backend/access/rmgrdesc/rmgrdesc_utils.c‎

Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -82,3 +82,9 @@ relid_desc(StringInfo buf, void *relid, void *data)
8282
{
8383
appendStringInfo(buf,"%u",*(Oid*)relid);
8484
}
85+
86+
void
87+
uint16_elem_desc(StringInfobuf,void*value,void*data)
88+
{
89+
appendStringInfo(buf,"%u",*(uint16*)value);
90+
}

‎src/include/access/rmgrdesc_utils.h‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -18,5 +18,6 @@ extern void array_desc(StringInfo buf, void *array, size_t elem_size, int count,
1818
externvoidoffset_elem_desc(StringInfobuf,void*offset,void*data);
1919
externvoidredirect_elem_desc(StringInfobuf,void*offset,void*data);
2020
externvoidrelid_desc(StringInfobuf,void*relid,void*data);
21+
externvoiduint16_elem_desc(StringInfobuf,void*value,void*data);
2122

2223
#endif/* RMGRDESC_UTILS_H */

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