Method shutdown

src/jrd/jrd.cpp:4611–4693

void JProvider::shutdown(CheckStatusWrapper* status, unsigned int timeout, const int reason)
{
/**************************************
 *
 *	G D S _ S H U T D O W N
 *
 **************************************
 *
 * Functional description
 *	Rollback every transaction, release
 *	every attachment, and shutdown every
 *	database.
 *
 **************************************/
	try
	{
		{ // scope
			MutexLockGuard guard(shutdownMutex, FB_FUNCTION);

			if (engineShutdown)
			{
				return;
			}
			{ // scope
				MutexLockGuard guard(newAttachmentMutex, FB_FUNCTION);
				engineShutdown = true;
			}

			ThreadContextHolder tdbb;
			WorkerAttachment::shutdown();
			EDS::Manager::shutdown();

			ULONG attach_count, database_count, svc_count;
			JRD_enum_attachments(NULL, attach_count, database_count, svc_count);

			if (attach_count > 0 || svc_count > 0)
			{
				gds__log("Shutting down the server with %d active connection(s) to %d database(s), "
						 "%d active service(s)",
					attach_count, database_count, svc_count);
			}

			if (reason == fb_shutrsn_exit_called)
			{
				// Starting threads may fail when task is going to close.
				// This happens at least with some microsoft C runtimes.
				// If people wish to have timeout, they should better call fb_shutdown() themselves.
				// Therefore:
				timeout = 0;
			}

			if (timeout)
			{
				Semaphore shutdown_semaphore;

				Thread shutThd;
				Thread::start(shutdown_thread, &shutdown_semaphore, THREAD_medium, &shutThd);