Function IsInParallelMode

src/backend/access/transam/xact.c:1289–1293

* IsInParallelMode * * Are we in a parallel operation, as either the leader or a worker? Check * this to prohibit operations that change backend-local state expected to * match across all workers. Mere caches usually don't require such a * restriction. State modified in a strict push/pop fashion, such as the * active snapshot stack, is often fine. */

 * active snapshot stack, is often fine.
 */
bool
IsInParallelMode(void)
{
	return CurrentTransactionState->parallelModeLevel != 0;
}

/*
 *	CommandCounterIncrement