Function CCH_shutdown

src/jrd/cch.cpp:2210–2291

void CCH_shutdown(thread_db* tdbb)
{
/**************************************
 *
 *	C C H _ s h u t d o w n
 *
 **************************************
 *
 * Functional description
 *	Shutdown database physical page locks.
 *
 **************************************/
	Database* const dbb = tdbb->getDatabase();
	BufferControl* const bcb = dbb->dbb_bcb;

	if (!bcb)
		return;

#ifdef CACHE_READER
	// Shutdown the dedicated cache reader for this database

	if (bcb->bcb_flags & BCB_cache_reader)
	{
		bcb->bcb_flags &= ~BCB_cache_reader;
		dbb->dbb_reader_sem.release();
		dbb->dbb_reader_fini.enter();
	}
#endif

	// Wait for cache writer startup to complete

	while (bcb->bcb_flags & BCB_writer_start)
		Thread::yield();

	// Shutdown the dedicated cache writer for this database

	if (bcb->bcb_flags & BCB_cache_writer)
	{
		bcb->bcb_flags &= ~BCB_cache_writer;
		bcb->bcb_writer_sem.release(); // Wake up running thread
		bcb->bcb_writer_fini.waitForCompletion();
	}

	SyncLockGuard bcbSync(&bcb->bcb_syncObject, SYNC_EXCLUSIVE, FB_FUNCTION);

	// Flush and release page buffers

	if (bcb->bcb_count)
	{
		try
		{
			if (dbb->dbb_flags & DBB_bugcheck)
				LongJump::raise();

			CCH_flush(tdbb, FLUSH_FINI, 0);
		}
		catch (const Exception&)
		{