Function ExecIncrementalSortEstimate

src/backend/executor/nodeIncrementalSort.c:1189–1202

---------------------------------------------------------------- * ExecSortEstimate * * Estimate space required to propagate sort statistics. * ---------------------------------------------------------------- */

 * ----------------------------------------------------------------
 */
void
ExecIncrementalSortEstimate(IncrementalSortState *node, ParallelContext *pcxt)
{
	Size		size;

	/* don't need this if not instrumenting or no workers */
	if (!node->ss.ps.instrument || pcxt->nworkers == 0)
		return;

	size = mul_size(pcxt->nworkers, sizeof(IncrementalSortInfo));
	size = add_size(size, offsetof(SharedIncrementalSortInfo, sinfo));
	shm_toc_estimate_chunk(&pcxt->estimator, size);
	shm_toc_estimate_keys(&pcxt->estimator, 1);
}

/* ----------------------------------------------------------------
 *		ExecSortInitializeDSM