Function RelationMapInitialize

src/backend/utils/cache/relmapper.c:590–602

* RelationMapInitialize * * This initializes the mapper module at process startup. We can't access the * database yet, so just make sure the maps are empty. */

 * database yet, so just make sure the maps are empty.
 */
void
RelationMapInitialize(void)
{
	/* The static variables should initialize to zeroes, but let's be sure */
	shared_map.magic = 0;		/* mark it not loaded */
	local_map.magic = 0;
	shared_map.num_mappings = 0;
	local_map.num_mappings = 0;
	active_shared_updates.num_mappings = 0;
	active_local_updates.num_mappings = 0;
	pending_shared_updates.num_mappings = 0;
	pending_local_updates.num_mappings = 0;
}

/*
 * RelationMapInitializePhase2