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Remove obsolete executor cleanup code

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This commit removes unnecessary ExecExprFreeContext() calls in
ExecEnd* routines because the actual cleanup is managed by
FreeExecutorState(). With no callers remaining for
ExecExprFreeContext(), this commit also removes the function.

This commit also drops redundant ExecClearTuple() calls, because
ExecResetTupleTable() in ExecEndPlan() already takes care of
resetting and dropping all TupleTableSlots initialized with
ExecInitScanTupleSlot() and ExecInitExtraTupleSlot().

After these modifications, the ExecEnd*() routines for ValuesScan,
NamedTuplestoreScan, and WorkTableScan became redundant. So, this
commit removes them.

Reviewed-by: Robert Haas
Discussion: https://postgr.es/m/CA+HiwqFGkMSge6TgC9KQzde0ohpAycLQuV7ooitEEpbKB0O_mg@mail.gmail.com
This commit is contained in:
Amit Langote
2023-09-28 09:44:39 +09:00
parent 9210afd3bc
commit d060e921ea
42 changed files with 6 additions and 419 deletions
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18
src/backend/executor/execProcnode.c
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@@ -667,22 +667,10 @@ ExecEndNode(PlanState *node)
ExecEndTableFuncScan((TableFuncScanState *) node);
break;
case T_ValuesScanState:
ExecEndValuesScan((ValuesScanState *) node);
break;
case T_CteScanState:
ExecEndCteScan((CteScanState *) node);
break;
case T_NamedTuplestoreScanState:
ExecEndNamedTuplestoreScan((NamedTuplestoreScanState *) node);
break;
case T_WorkTableScanState:
ExecEndWorkTableScan((WorkTableScanState *) node);
break;
case T_ForeignScanState:
ExecEndForeignScan((ForeignScanState *) node);
break;
@@ -757,6 +745,12 @@ ExecEndNode(PlanState *node)
ExecEndLimit((LimitState *) node);
break;
/* No clean up actions for these nodes. */
case T_ValuesScanState:
case T_NamedTuplestoreScanState:
case T_WorkTableScanState:
break;
default:
elog(ERROR, "unrecognized node type: %d", (int) nodeTag(node));
break;