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Commit67b2670

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expression eval: Fix EEOP_JSON_CONSTRUCTOR and EEOP_JSONEXPR size.
The new expression step types increased the size of ExprEvalStep by ~4 for alltypes of expression steps, slowing down expression evaluation noticeably. Movethem out of line.There's other issues with these expression steps, but addressing them islargely independent of this aspect.Author: Andres Freund <andres@anarazel.de>Reviewed-By: Andrew Dunstan <andrew@dunslane.net>Discussion:https://postgr.es/m/20220616233130.rparivafipt6doj3@alap3.anarazel.deBackpatch: 15-
1 parent3f8148c commit67b2670

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4 files changed

+170
-140
lines changed

4 files changed

+170
-140
lines changed

‎src/backend/executor/execExpr.c‎

Lines changed: 51 additions & 42 deletions
Original file line numberDiff line numberDiff line change
@@ -2470,32 +2470,38 @@ ExecInitExprRec(Expr *node, ExprState *state,
24702470
}
24712471
else
24722472
{
2473+
JsonConstructorExprState*jcstate;
2474+
2475+
jcstate=palloc0(sizeof(JsonConstructorExprState));
2476+
24732477
scratch.opcode=EEOP_JSON_CONSTRUCTOR;
2474-
scratch.d.json_constructor.constructor=ctor;
2475-
scratch.d.json_constructor.arg_values=palloc(sizeof(Datum)*nargs);
2476-
scratch.d.json_constructor.arg_nulls=palloc(sizeof(bool)*nargs);
2477-
scratch.d.json_constructor.arg_types=palloc(sizeof(Oid)*nargs);
2478-
scratch.d.json_constructor.nargs=nargs;
2478+
scratch.d.json_constructor.jcstate=jcstate;
2479+
2480+
jcstate->constructor=ctor;
2481+
jcstate->arg_values=palloc(sizeof(Datum)*nargs);
2482+
jcstate->arg_nulls=palloc(sizeof(bool)*nargs);
2483+
jcstate->arg_types=palloc(sizeof(Oid)*nargs);
2484+
jcstate->nargs=nargs;
24792485

24802486
foreach(lc,args)
24812487
{
24822488
Expr*arg= (Expr*)lfirst(lc);
24832489

2484-
scratch.d.json_constructor.arg_types[argno]=exprType((Node*)arg);
2490+
jcstate->arg_types[argno]=exprType((Node*)arg);
24852491

24862492
if (IsA(arg,Const))
24872493
{
24882494
/* Don't evaluate const arguments every round */
24892495
Const*con= (Const*)arg;
24902496

2491-
scratch.d.json_constructor.arg_values[argno]=con->constvalue;
2492-
scratch.d.json_constructor.arg_nulls[argno]=con->constisnull;
2497+
jcstate->arg_values[argno]=con->constvalue;
2498+
jcstate->arg_nulls[argno]=con->constisnull;
24932499
}
24942500
else
24952501
{
24962502
ExecInitExprRec(arg,state,
2497-
&scratch.d.json_constructor.arg_values[argno],
2498-
&scratch.d.json_constructor.arg_nulls[argno]);
2503+
&jcstate->arg_values[argno],
2504+
&jcstate->arg_nulls[argno]);
24992505
}
25002506
argno++;
25012507
}
@@ -2506,14 +2512,14 @@ ExecInitExprRec(Expr *node, ExprState *state,
25062512
boolis_jsonb=
25072513
ctor->returning->format->format_type==JS_FORMAT_JSONB;
25082514

2509-
scratch.d.json_constructor.arg_type_cache=
2510-
palloc(sizeof(*scratch.d.json_constructor.arg_type_cache)*nargs);
2515+
jcstate->arg_type_cache=
2516+
palloc(sizeof(*jcstate->arg_type_cache)*nargs);
25112517

25122518
for (inti=0;i<nargs;i++)
25132519
{
25142520
intcategory;
25152521
Oidoutfuncid;
2516-
Oidtypid=scratch.d.json_constructor.arg_types[i];
2522+
Oidtypid=jcstate->arg_types[i];
25172523

25182524
if (is_jsonb)
25192525
{
@@ -2532,8 +2538,8 @@ ExecInitExprRec(Expr *node, ExprState *state,
25322538
category= (int)jscat;
25332539
}
25342540

2535-
scratch.d.json_constructor.arg_type_cache[i].outfuncid=outfuncid;
2536-
scratch.d.json_constructor.arg_type_cache[i].category=category;
2541+
jcstate->arg_type_cache[i].outfuncid=outfuncid;
2542+
jcstate->arg_type_cache[i].category=category;
25372543
}
25382544
}
25392545

@@ -2572,41 +2578,44 @@ ExecInitExprRec(Expr *node, ExprState *state,
25722578
caseT_JsonExpr:
25732579
{
25742580
JsonExpr*jexpr=castNode(JsonExpr,node);
2581+
JsonExprState*jsestate=palloc0(sizeof(JsonExprState));
25752582
ListCell*argexprlc;
25762583
ListCell*argnamelc;
25772584

25782585
scratch.opcode=EEOP_JSONEXPR;
2579-
scratch.d.jsonexpr.jsexpr=jexpr;
2586+
scratch.d.jsonexpr.jsestate=jsestate;
2587+
2588+
jsestate->jsexpr=jexpr;
25802589

2581-
scratch.d.jsonexpr.formatted_expr=
2582-
palloc(sizeof(*scratch.d.jsonexpr.formatted_expr));
2590+
jsestate->formatted_expr=
2591+
palloc(sizeof(*jsestate->formatted_expr));
25832592

25842593
ExecInitExprRec((Expr*)jexpr->formatted_expr,state,
2585-
&scratch.d.jsonexpr.formatted_expr->value,
2586-
&scratch.d.jsonexpr.formatted_expr->isnull);
2594+
&jsestate->formatted_expr->value,
2595+
&jsestate->formatted_expr->isnull);
25872596

2588-
scratch.d.jsonexpr.pathspec=
2589-
palloc(sizeof(*scratch.d.jsonexpr.pathspec));
2597+
jsestate->pathspec=
2598+
palloc(sizeof(*jsestate->pathspec));
25902599

25912600
ExecInitExprRec((Expr*)jexpr->path_spec,state,
2592-
&scratch.d.jsonexpr.pathspec->value,
2593-
&scratch.d.jsonexpr.pathspec->isnull);
2601+
&jsestate->pathspec->value,
2602+
&jsestate->pathspec->isnull);
25942603

2595-
scratch.d.jsonexpr.res_expr=
2596-
palloc(sizeof(*scratch.d.jsonexpr.res_expr));
2604+
jsestate->res_expr=
2605+
palloc(sizeof(*jsestate->res_expr));
25972606

2598-
scratch.d.jsonexpr.result_expr=jexpr->result_coercion
2607+
jsestate->result_expr=jexpr->result_coercion
25992608
?ExecInitExprWithCaseValue((Expr*)jexpr->result_coercion->expr,
26002609
state->parent,
2601-
&scratch.d.jsonexpr.res_expr->value,
2602-
&scratch.d.jsonexpr.res_expr->isnull)
2610+
&jsestate->res_expr->value,
2611+
&jsestate->res_expr->isnull)
26032612
:NULL;
26042613

2605-
scratch.d.jsonexpr.default_on_empty= !jexpr->on_empty ?NULL :
2614+
jsestate->default_on_empty= !jexpr->on_empty ?NULL :
26062615
ExecInitExpr((Expr*)jexpr->on_empty->default_expr,
26072616
state->parent);
26082617

2609-
scratch.d.jsonexpr.default_on_error=
2618+
jsestate->default_on_error=
26102619
ExecInitExpr((Expr*)jexpr->on_error->default_expr,
26112620
state->parent);
26122621

@@ -2617,11 +2626,11 @@ ExecInitExprRec(Expr *node, ExprState *state,
26172626

26182627
/* lookup the result type's input function */
26192628
getTypeInputInfo(jexpr->returning->typid,&typinput,
2620-
&scratch.d.jsonexpr.input.typioparam);
2621-
fmgr_info(typinput,&scratch.d.jsonexpr.input.func);
2629+
&jsestate->input.typioparam);
2630+
fmgr_info(typinput,&jsestate->input.func);
26222631
}
26232632

2624-
scratch.d.jsonexpr.args=NIL;
2633+
jsestate->args=NIL;
26252634

26262635
forboth(argexprlc,jexpr->passing_values,
26272636
argnamelc,jexpr->passing_names)
@@ -2640,11 +2649,11 @@ ExecInitExprRec(Expr *node, ExprState *state,
26402649
var->value= (Datum)0;
26412650
var->isnull= true;
26422651

2643-
scratch.d.jsonexpr.args=
2644-
lappend(scratch.d.jsonexpr.args,var);
2652+
jsestate->args=
2653+
lappend(jsestate->args,var);
26452654
}
26462655

2647-
scratch.d.jsonexpr.cache=NULL;
2656+
jsestate->cache=NULL;
26482657

26492658
if (jexpr->coercions)
26502659
{
@@ -2653,13 +2662,13 @@ ExecInitExprRec(Expr *node, ExprState *state,
26532662
Datum*caseval;
26542663
bool*casenull;
26552664

2656-
scratch.d.jsonexpr.coercion_expr=
2657-
palloc(sizeof(*scratch.d.jsonexpr.coercion_expr));
2665+
jsestate->coercion_expr=
2666+
palloc(sizeof(*jsestate->coercion_expr));
26582667

2659-
caseval=&scratch.d.jsonexpr.coercion_expr->value;
2660-
casenull=&scratch.d.jsonexpr.coercion_expr->isnull;
2668+
caseval=&jsestate->coercion_expr->value;
2669+
casenull=&jsestate->coercion_expr->isnull;
26612670

2662-
for (cstate=&scratch.d.jsonexpr.coercions.null,
2671+
for (cstate=&jsestate->coercions.null,
26632672
coercion=&jexpr->coercions->null;
26642673
coercion <=&jexpr->coercions->composite;
26652674
coercion++,cstate++)

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