Function initAttachment

src/jrd/jrd.cpp:7346–7534

static JAttachment* initAttachment(thread_db* tdbb, const PathName& expanded_name,
	const PathName& alias_name, RefPtr<const Config> config, bool attach_flag,
	const DatabaseOptions& options, RefMutexUnlock& initGuard, IPluginConfig* pConf,
	JProvider* provider)
{
/**************************************
 *
 *	i n i t A t t a c h m e n t
 *
 **************************************
 *
 * Functional description
 *	Initialize for database access.  First call from both CREATE and ATTACH.
 *	Upon entry mutex dbInitMutex must be locked.
 *
 **************************************/
	SET_TDBB(tdbb);
	fb_assert(dbInitMutex->locked());

	// make sure that no new attachments arrive after shutdown started
	if (engineShutdown)
	{
		Arg::Gds(isc_att_shutdown).raise();
	}

	// Initialize standard random generator.
	// MSVC (at least since version 7) have per-thread random seed.
	// As we don't know who uses per-thread seed, this should work for both cases.
	static bool first_rand = true;
	static int first_rand_value = rand();

	if (first_rand || (rand() == first_rand_value))
		srand(time(NULL));

	first_rand = false;

#ifdef HAVE_ID_BY_NAME
	UCharBuffer db_id;
	os_utils::getUniqueFileId(expanded_name.c_str(), db_id);
#endif

	engineStartup.init();

	if (!attach_flag && options.dpb_set_db_charset.hasData() &&
		!IntlManager::charSetInstalled(options.dpb_set_db_charset))
	{
		ERR_post(Arg::Gds(isc_charset_not_installed) << options.dpb_set_db_charset);
	}

	// Check to see if the database is already attached
	Database* dbb = NULL;
	JAttachment* jAtt;

	bool shared = false;

	{	// scope
		MutexLockGuard listGuard(databases_mutex, FB_FUNCTION);