Method write

src/jrd/CryptoManager.cpp:1271–1329

	}

	bool CryptoManager::write(thread_db* tdbb, FbStatusVector* sv, Ods::pag* page, IOCallback* io)
	{
		// Code calling us is not ready to process exceptions correctly
		// Therefore use old (status vector based) method
		try
		{
			// Sanity check
			if (page->pag_type > pag_max)
				Arg::Gds(isc_page_type_err).raise();

			// Page is never going to be encrypted. No locks needed.
			if (!Ods::pag_crypt_page[page->pag_type])
				return internalWrite(tdbb, sv, page, io) == SUCCESS_ALL;

			// Normal case (almost always get here)
			// Take shared lock on crypto manager and write data
			if (!slowIO)
			{
				BarSync::IoGuard ioGuard(tdbb, sync);
				if (!slowIO)
					return internalWrite(tdbb, sv, page, io) == SUCCESS_ALL;
			}

			// Have to use slow method - see full comments in read() function
			BarSync::LockGuard lockGuard(tdbb, sync);
			lockGuard.lock();
			for (SINT64 previous = slowIO; ; previous = slowIO)
			{
				switch (internalWrite(tdbb, sv, page, io))
				{
				case SUCCESS_ALL:
					if (!slowIO)
						return true;

					lockAndReadHeader(tdbb, CRYPT_HDR_NOWAIT);
					if (slowIO == previous)
						return true;
					break;

				case FAILED_IO:
					return false;

				case FAILED_CRYPT:
					if (!slowIO)
						return false;

					lockAndReadHeader(tdbb, CRYPT_HDR_NOWAIT);
					if (slowIO == previous)
						return false;
					break;
				}
			}
		}
		catch (const Exception& ex)
		{
			ex.stuffException(sv);
		}
		return false;