Ws CloseHandle for closing while waiting

[faern]

Solves #148

[faern]

If someone knows a way to do this without a mutex that would of course be nicer, but this works.

[tomusdrw]

You could try to make server-utils::reactor::Remote cloneable and move the Mutex there, cause it's only required if the event loop has actually been spawned.

[faern]

@tomusdrw I looked into moving the locking now. However, I think it made things less clear/nice. The variant would become Spawned(Arc<Mutex<Option<RpcEventLoop>>>). The option is there since RpcEventLoop::close and wait consumes self, so I must take the ownership of it. And it resulted in having to lock the mutex in all three methods on Remote.

The current solution put the lock higher up, but the only place where it's actually locked is in CloseHandle::close. So there is no locking performance penalty (except the Arc decrement) unless someone actually use the CloseHandle, and since closing is a one time operation it should not be that crucial.

[tomusdrw]

Fair enough, lgtm then!

[faern]

Ping? :)

[tomusdrw]

Thanks!