Some suggestions about Thread.sleep()

Hi, i found something in line 44-45
https://github.com/wocommunity/wonder/blob/master/Frameworks/Core/ERExtensions/Sources/er/extensions/eof/ERXGlobalLock.java

The code will wait for 'filelock' signal. It may cause potentially endless loop. I think use ‘CountDownLatch.await’ and set a max waitting time should be helpful.

Best Regards