Function ExecForeignScanEstimate

src/backend/executor/nodeForeignscan.c:377–388

---------------------------------------------------------------- * ExecForeignScanEstimate * * Informs size of the parallel coordination information, if any * ---------------------------------------------------------------- */

 * ----------------------------------------------------------------
 */
void
ExecForeignScanEstimate(ForeignScanState *node, ParallelContext *pcxt)
{
	FdwRoutine *fdwroutine = node->fdwroutine;

	if (fdwroutine->EstimateDSMForeignScan)
	{
		node->pscan_len = fdwroutine->EstimateDSMForeignScan(node, pcxt);
		shm_toc_estimate_chunk(&pcxt->estimator, node->pscan_len);
		shm_toc_estimate_keys(&pcxt->estimator, 1);
	}
}

/* ----------------------------------------------------------------
 *		ExecForeignScanInitializeDSM