Function ExecAppendEstimate

src/backend/executor/nodeAppend.c:501–511

---------------------------------------------------------------- * ExecAppendEstimate * * Compute the amount of space we'll need in the parallel * query DSM, and inform pcxt->estimator about our needs. * ---------------------------------------------------------------- */

 * ----------------------------------------------------------------
 */
void
ExecAppendEstimate(AppendState *node,
				   ParallelContext *pcxt)
{
	node->pstate_len =
		add_size(offsetof(ParallelAppendState, pa_finished),
				 sizeof(bool) * node->as_nplans);

	shm_toc_estimate_chunk(&pcxt->estimator, node->pstate_len);
	shm_toc_estimate_keys(&pcxt->estimator, 1);
}


/* ----------------------------------------------------------------