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Commit713f55c

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Merge branch 'picky_nodes' of github.com:postgrespro/pg_pathman into picky_nodes
2 parentsaa59208 +4a838d3 commit713f55c

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2 files changed

+47
-86
lines changed

2 files changed

+47
-86
lines changed

‎pickyappend.c‎

Lines changed: 45 additions & 83 deletions
Original file line numberDiff line numberDiff line change
@@ -87,61 +87,38 @@ transform_plans_into_states(PickyAppendState *scan_state,
8787
}
8888

8989
staticChildScanCommon*
90-
select_required_plans(ChildScanCommon*children,intnchildren,
91-
Oid*parts,intnparts,
92-
int*nres)
90+
select_required_plans(HTAB*children_table,Oid*parts,intnparts,int*nres)
9391
{
94-
ChildScanCommon*children_end=children+nchildren;
95-
Oid*parts_end=parts+nparts;
9692
intallocated=10;
9793
intused=0;
9894
ChildScanCommon*result=palloc(10*sizeof(ChildScanCommon));
95+
inti;
9996

100-
while (children<children_end&&parts<parts_end)
97+
for (i=0;i<nparts;i++)
10198
{
102-
if ((*children)->relid<*parts)
103-
children++;
104-
else
99+
ChildScanCommonchild_copy;
100+
ChildScanCommonchild=hash_search(children_table,
101+
(constvoid*)&parts[i],
102+
HASH_FIND,NULL);
103+
if (!child)
104+
continue;
105+
106+
if (allocated <=used)
105107
{
106-
if (!(*parts< (*children)->relid))
107-
{
108-
ChildScanCommonchild=palloc(sizeof(ChildScanCommonData));
109-
110-
if (allocated <=used)
111-
{
112-
allocated *=2;
113-
result=repalloc(result,allocated*sizeof(ChildScanCommon));
114-
}
108+
allocated *=2;
109+
result=repalloc(result,allocated*sizeof(ChildScanCommon));
110+
}
115111

116-
child->content_type=CHILD_PLAN;
117-
child->content.plan= (*children)->content.plan;
118-
child->relid= (*children)->relid;
112+
child_copy=palloc(sizeof(ChildScanCommonData));
113+
memcpy(child_copy,child,sizeof(ChildScanCommonData));
119114

120-
result[used++]=child;
121-
children++;
122-
}
123-
parts++;
124-
}
115+
result[used++]=child_copy;
125116
}
126117

127118
*nres=used;
128119
returnresult;
129120
}
130121

131-
/* qsort comparison function for oids */
132-
staticint
133-
oid_cmp(constvoid*p1,constvoid*p2)
134-
{
135-
Oidv1=*((constOid*)p1);
136-
Oidv2=*((constOid*)p2);
137-
138-
if (v1<v2)
139-
return-1;
140-
if (v1>v2)
141-
return1;
142-
return0;
143-
}
144-
145122
staticOid*
146123
get_partition_oids(List*ranges,int*n,PartRelationInfo*prel)
147124
{
@@ -170,27 +147,10 @@ get_partition_oids(List *ranges, int *n, PartRelationInfo *prel)
170147
}
171148
}
172149

173-
if (used>1)
174-
qsort(result,used,sizeof(Oid),oid_cmp);
175-
176150
*n=used;
177151
returnresult;
178152
}
179153

180-
staticint
181-
cmp_child_scan_common(constvoid*a,constvoid*b)
182-
{
183-
ChildScanCommonchild_a=*(ChildScanCommon*)a;
184-
ChildScanCommonchild_b=*(ChildScanCommon*)b;
185-
186-
if (child_a->relid>child_b->relid)
187-
return1;
188-
elseif (child_a->relid<child_b->relid)
189-
return-1;
190-
else
191-
return0;
192-
}
193-
194154
staticPath*
195155
create_pickyappend_path(PlannerInfo*root,
196156
RelOptInfo*joinrel,
@@ -261,16 +221,12 @@ create_pickyappend_path(PlannerInfo *root,
261221
child->relid=root->simple_rte_array[relindex]->relid;
262222
Assert(child->relid!=InvalidOid);
263223

264-
result->children[i++]=child;
265-
}
266-
267-
qsort(result->children,result->nchildren,
268-
sizeof(ChildScanCommon),cmp_child_scan_common);
269-
270-
/* Fill 'custom_paths' with paths in sort order */
271-
for (i=0;i<result->nchildren;i++)
272224
result->cpath.custom_paths=lappend(result->cpath.custom_paths,
273-
result->children[i]->content.path);
225+
child->content.path);
226+
result->children[i]=child;
227+
228+
i++;
229+
}
274230

275231
return&result->cpath.path;
276232
}
@@ -357,28 +313,34 @@ save_pickyappend_private(CustomScan *cscan, PickyAppendPath *path)
357313
staticvoid
358314
unpack_pickyappend_private(PickyAppendState*scan_state,CustomScan*cscan)
359315
{
360-
List*custom_oids= (List*)lsecond(cscan->custom_private);
361-
intnchildren=list_length(custom_oids);
362-
ChildScanCommon*children=palloc(nchildren*sizeof(ChildScanCommon));
363-
ListCell*cur_oid;
364-
ListCell*cur_plan;
365-
inti;
316+
ListCell*oid_cell;
317+
ListCell*plan_cell;
318+
List*custom_oids=(List*)lsecond(cscan->custom_private);
319+
intnchildren=list_length(custom_oids);
320+
HTAB*children_table=scan_state->children_table;
321+
HASHCTL*children_table_config=&scan_state->children_table_config;
366322

367-
i=0;
368-
forboth (cur_oid,custom_oids,cur_plan,cscan->custom_plans)
323+
memset(children_table_config,0,sizeof(HASHCTL));
324+
children_table_config->keysize=sizeof(Oid);
325+
children_table_config->entrysize=sizeof(ChildScanCommonData);
326+
327+
children_table=hash_create("Plan storage",nchildren,
328+
children_table_config,HASH_ELEM |HASH_BLOBS);
329+
330+
forboth (oid_cell,custom_oids,plan_cell,cscan->custom_plans)
369331
{
370-
ChildScanCommonchild=palloc(sizeof(ChildScanCommonData));
332+
Oidcur_oid=lfirst_oid(oid_cell);
371333

372-
child->content_type=CHILD_PLAN;
373-
child->content.plan= (Plan*)lfirst(cur_plan);
374-
child->relid=lfirst_oid(cur_oid);
334+
ChildScanCommonchild=hash_search(children_table,
335+
(constvoid*)&cur_oid,
336+
HASH_ENTER,NULL);
375337

376-
children[i++]=child;
338+
child->content_type=CHILD_PLAN;
339+
child->content.plan= (Plan*)lfirst(plan_cell);
377340
}
378341

342+
scan_state->children_table=children_table;
379343
scan_state->relid=linitial_oid(linitial(cscan->custom_private));
380-
scan_state->children=children;
381-
scan_state->nchildren=nchildren;
382344
}
383345

384346
Plan*
@@ -485,6 +447,7 @@ pickyappend_end(CustomScanState *node)
485447

486448
clear_plan_states(scan_state);
487449
hash_destroy(scan_state->plan_state_table);
450+
hash_destroy(scan_state->children_table);
488451
}
489452

490453
void
@@ -515,8 +478,7 @@ pickyappend_rescan(CustomScanState *node)
515478

516479
/* Select new plans for this pass */
517480
free_child_scan_common_array(scan_state->cur_plans,scan_state->ncur_plans);
518-
scan_state->cur_plans=select_required_plans(scan_state->children,
519-
scan_state->nchildren,
481+
scan_state->cur_plans=select_required_plans(scan_state->children_table,
520482
parts,nparts,
521483
&scan_state->ncur_plans);
522484
pfree(parts);

‎pickyappend.h‎

Lines changed: 2 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -48,9 +48,8 @@ typedef struct
4848
List*custom_exprs;
4949
List*custom_expr_states;
5050

51-
/* All available plans */
52-
ChildScanCommon*children;
53-
intnchildren;
51+
HTAB*children_table;
52+
HASHCTLchildren_table_config;
5453

5554
/* Currently selected plans \ plan states */
5655
ChildScanCommon*cur_plans;

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