Method find

src/jrd/cch.cpp:5368–5398

}

inline BufferDesc* BCBHashTable::find(const PageNumber& page) const
{
	auto& list = m_chains[hash(page)];

#ifndef HASH_USE_CDS_LIST
	QUE que_inst = list.que_forward;
	for (; que_inst != &list; que_inst = que_inst->que_forward)
	{
		BufferDesc* bdb = BLOCK(que_inst, BufferDesc, bdb_que);
		if (bdb->bdb_page == page)
			return bdb;
	}

#else // HASH_USE_CDS_LIST
	auto ptr = list.get(page);
	if (!ptr.empty())
	{
		fb_assert(ptr->second != nullptr);
#ifdef DEV_BUILD
		// Original libcds have no update(key, value), use this code with it,
		// see also comment in get_buffer()
		while (ptr->second == nullptr)
			cds::backoff::pause();
#endif
		if (ptr->second->bdb_page == page)
			return ptr->second;
	}
#endif

	return nullptr;
}

inline BufferDesc* BCBHashTable::emplace(BufferDesc* bdb, const PageNumber& page, bool remove)
{