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Commitc79b3f7

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committed
introduce InitWalkerContextCustomNode macro, new comments
1 parentd42fd8f commitc79b3f7

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7 files changed

+72
-48
lines changed

7 files changed

+72
-48
lines changed

‎src/nodes_common.c

Lines changed: 3 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -481,6 +481,7 @@ end_append_common(CustomScanState *node)
481481
{
482482
RuntimeAppendState*scan_state= (RuntimeAppendState*)node;
483483

484+
clear_walker_context(&scan_state->wcxt);
484485
clear_plan_states(&scan_state->css);
485486
hash_destroy(scan_state->children_table);
486487
}
@@ -498,21 +499,8 @@ rescan_append_common(CustomScanState *node)
498499

499500
ranges=list_make1_irange(make_irange(0,prel->children_count-1, false));
500501

501-
/*
502-
* We'd like to persist RangeEntry array
503-
* in case of range partitioning, so 'wcxt'
504-
* is stored inside of RuntimeAppendState
505-
*/
506-
if (!scan_state->wcxt_cached)
507-
{
508-
scan_state->wcxt.prel=prel;
509-
scan_state->wcxt.econtext=econtext;
510-
scan_state->wcxt.ranges=NULL;
511-
512-
scan_state->wcxt_cached= true;
513-
}
514-
scan_state->wcxt.hasLeast= false;/* refresh runtime values */
515-
scan_state->wcxt.hasGreatest= false;
502+
InitWalkerContextCustomNode(&scan_state->wcxt,scan_state->prel,
503+
econtext,&scan_state->wcxt_cached);
516504

517505
foreach (lc,scan_state->custom_exprs)
518506
{

‎src/partition_filter.c

Lines changed: 4 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -159,21 +159,8 @@ partition_filter_exec(CustomScanState *node)
159159
CopyToTempConst(constlen,attlen);
160160
CopyToTempConst(constbyval,attbyval);
161161

162-
/*
163-
* We'd like to persist RangeEntry array
164-
* in case of range partitioning, so 'wcxt'
165-
* is stored inside of PartitionFilterState
166-
*/
167-
if (!state->wcxt_cached)
168-
{
169-
state->wcxt.prel=state->prel;
170-
state->wcxt.econtext=econtext;
171-
state->wcxt.ranges=NULL;
172-
173-
state->wcxt_cached= true;
174-
}
175-
state->wcxt.hasLeast= false;/* refresh runtime values */
176-
state->wcxt.hasGreatest= false;
162+
InitWalkerContextCustomNode(&state->wcxt,state->prel,
163+
econtext,&state->wcxt_cached);
177164

178165
ranges=walk_expr_tree((Expr*)&state->temp_const,&state->wcxt)->rangeset;
179166
parts=get_partition_oids(ranges,&nparts,state->prel);
@@ -215,11 +202,12 @@ partition_filter_end(CustomScanState *node)
215202
heap_close(rri_handle->resultRelInfo->ri_RelationDesc,
216203
RowExclusiveLock);
217204
}
218-
219205
hash_destroy(state->result_rels_table);
220206

221207
Assert(list_length(node->custom_ps)==1);
222208
ExecEndNode((PlanState*)linitial(node->custom_ps));
209+
210+
clear_walker_context(&state->wcxt);
223211
}
224212

225213
void

‎src/partition_filter.h

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,13 +23,14 @@ typedef struct
2323
ResultRelInfo*savedRelInfo;
2424

2525
Plan*subplan;
26-
Consttemp_const;/* temporary const for expr walker */
26+
Consttemp_const;/* temporary const for expr walker */
2727

2828
HTAB*result_rels_table;
2929
HASHCTLresult_rels_table_config;
3030

3131
WalkerContextwcxt;
32-
boolwcxt_cached;
32+
boolwcxt_cached;/* does wcxt contain cached data,
33+
e.g. RangeEntry array? */
3334
}PartitionFilterState;
3435

3536

‎src/pathman.h

Lines changed: 25 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -78,7 +78,6 @@ typedef struct PartRelationInfo
7878
PartTypeparttype;
7979
Indexattnum;
8080
Oidatttype;
81-
8281
}PartRelationInfo;
8382

8483
/*
@@ -256,12 +255,12 @@ typedef struct
256255
typedefstruct
257256
{
258257
/* Main partitioning structure */
259-
PartRelationInfo*prel;
258+
constPartRelationInfo*prel;
260259

261260
/* Cached values */
262-
RangeEntry*ranges;/*cached RangeEntry array */
263-
size_tnranges;
264-
ExprContext*econtext;
261+
constRangeEntry*ranges;/*cached RangeEntry array (copy) */
262+
size_tnranges;/* number of RangeEntries */
263+
ExprContext*econtext;/* for ExecEvalExpr() */
265264

266265
/* Runtime values */
267266
boolhasLeast,
@@ -270,6 +269,9 @@ typedef struct
270269
greatest;
271270
}WalkerContext;
272271

272+
/*
273+
* Usual initialization procedure for WalkerContext
274+
*/
273275
#defineInitWalkerContext(context,prel_info,ecxt) \
274276
do { \
275277
(context)->prel = (prel_info); \
@@ -279,6 +281,24 @@ typedef struct
279281
(context)->hasGreatest = false; \
280282
} while (0)
281283

284+
/*
285+
* We'd like to persist RangeEntry (ranges) array
286+
* in case of range partitioning, so 'wcxt' is stored
287+
* inside of Custom Node
288+
*/
289+
#defineInitWalkerContextCustomNode(context,prel_info,ecxt,isCached) \
290+
do { \
291+
if (!*isCached) \
292+
{ \
293+
(context)->prel = prel_info; \
294+
(context)->econtext = ecxt; \
295+
(context)->ranges = NULL; \
296+
*isCached = true; \
297+
} \
298+
(context)->hasLeast = false; \
299+
(context)->hasGreatest = false; \
300+
} while (0)
301+
282302
voidselect_range_partitions(constDatumvalue,
283303
constboolbyVal,
284304
FmgrInfo*cmp_func,

‎src/pg_pathman.c

Lines changed: 19 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -313,6 +313,7 @@ handle_modification_query(Query *parse)
313313
InitWalkerContext(&context,prel,NULL);
314314
wrap=walk_expr_tree(expr,&context);
315315
finish_least_greatest(wrap,&context);
316+
clear_walker_context(&context);
316317

317318
ranges=irange_list_intersect(ranges,wrap->rangeset);
318319

@@ -710,6 +711,12 @@ change_varnos_in_restrinct_info(RestrictInfo *rinfo, change_varno_context *conte
710711
}
711712
}
712713

714+
/*
715+
* Refresh cached RangeEntry array within WalkerContext
716+
*
717+
* This is essential when we add new partitions
718+
* while executing INSERT query on partitioned table.
719+
*/
713720
void
714721
refresh_walker_context_ranges(WalkerContext*context)
715722
{
@@ -721,12 +728,15 @@ refresh_walker_context_ranges(WalkerContext *context)
721728
context->nranges=rangerel->ranges.elem_count;
722729
}
723730

731+
/*
732+
* Free all temporary data cached by WalkerContext
733+
*/
724734
void
725735
clear_walker_context(WalkerContext*context)
726736
{
727737
if (context->ranges)
728738
{
729-
pfree(context->ranges);
739+
pfree((void*)context->ranges);
730740
context->ranges=NULL;
731741
}
732742
}
@@ -1023,14 +1033,14 @@ static void
10231033
handle_binary_opexpr(WalkerContext*context,WrapperNode*result,
10241034
constVar*v,constConst*c)
10251035
{
1026-
HashRelationKeykey;
1027-
intint_value,
1028-
strategy;
1029-
FmgrInfocmp_func;
1030-
Oidcmp_proc_oid;
1031-
constOpExpr*expr= (constOpExpr*)result->orig;
1032-
TypeCacheEntry*tce;
1033-
PartRelationInfo*prel=context->prel;
1036+
HashRelationKeykey;
1037+
intint_value,
1038+
strategy;
1039+
TypeCacheEntry*tce;
1040+
FmgrInfocmp_func;
1041+
Oidcmp_proc_oid;
1042+
constOpExpr*expr= (constOpExpr*)result->orig;
1043+
constPartRelationInfo*prel=context->prel;
10341044

10351045
/* Determine operator type */
10361046
tce=lookup_type_cache(v->vartype,

‎src/pl_funcs.c

Lines changed: 0 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -381,4 +381,3 @@ release_partitions_lock(PG_FUNCTION_ARGS)
381381
LWLockRelease(pmstate->edit_partitions_lock);
382382
PG_RETURN_NULL();
383383
}
384-

‎src/utils.c

Lines changed: 18 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -21,6 +21,10 @@
2121

2222
staticboolclause_contains_params_walker(Node*node,void*context);
2323

24+
25+
/*
26+
* Check whether clause contains PARAMs or not
27+
*/
2428
bool
2529
clause_contains_params(Node*clause)
2630
{
@@ -59,6 +63,11 @@ bms_print(Bitmapset *bms)
5963
returnstr.data;
6064
}
6165

66+
/*
67+
* Copied from util/plancat.c
68+
*
69+
* Build a targetlist representing the columns of the specified index.
70+
*/
6271
List*
6372
build_index_tlist(PlannerInfo*root,IndexOptInfo*index,
6473
RelationheapRelation)
@@ -143,6 +152,12 @@ check_rinfo_for_partitioned_attr(List *rinfo, Index varno, AttrNumber varattno)
143152
return false;
144153
}
145154

155+
/*
156+
* Append trigger info contained in 'more' to 'src'.
157+
*
158+
* This allows us to execute some of main table's triggers on children.
159+
* See ExecInsert() for more details.
160+
*/
146161
TriggerDesc*
147162
append_trigger_descs(TriggerDesc*src,TriggerDesc*more,bool*grown_up)
148163
{
@@ -234,6 +249,9 @@ add_missing_partition(Oid partitioned_table, Const *value)
234249
returnresult;
235250
}
236251

252+
/*
253+
* Get BTORDER_PROC for two types described by Oids
254+
*/
237255
void
238256
fill_type_cmp_fmgr_info(FmgrInfo*finfo,Oidtype1,Oidtype2)
239257
{

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