Method checkDPinPIP

src/jrd/validation.cpp:3004–3038

}

void Validation::checkDPinPIP(jrd_rel* relation, ULONG page_number)
{
	/**************************************
	*
	* Functional description
	*	Check if data page presented in page inventory page.
	* If not we try to fix it by clearing the necessary bit on the page.
	**************************************/

	Database* dbb = vdr_tdbb->getDatabase();

	PageManager& pageMgr = dbb->dbb_page_manager;
	PageSpace* pageSpace = pageMgr.findPageSpace(DB_PAGE_SPACE);
	fb_assert(pageSpace);

	const ULONG sequence = page_number / pageMgr.pagesPerPIP;
	const ULONG relative_bit = page_number % pageMgr.pagesPerPIP;

	WIN pip_window(DB_PAGE_SPACE, (sequence == 0) ? pageSpace->pipFirst : sequence * pageMgr.pagesPerPIP - 1);

	page_inv_page* pages;
	fetch_page(false, pip_window.win_page.getPageNum(), pag_pages, &pip_window, &pages);
	if (pages->pip_bits[relative_bit >> 3] & (1 << (relative_bit & 7)))
	{
		corrupt(VAL_DATA_PAGE_ISNT_IN_PIP, relation, page_number, pip_window.win_page.getPageNum(), relative_bit);
		if (vdr_flags & VDR_update)
		{
			CCH_MARK(vdr_tdbb, &pip_window);
			pages->pip_bits[relative_bit >> 3] &= ~(1 << (relative_bit & 7));
			vdr_fixed++;
		}
	}

	release_page(&pip_window);
}

Validation::RTN Validation::walk_relation(jrd_rel* relation)
{