From: "Iñaki Baz Castillo" <ibc@...>
Date: 2008-07-21T06:49:38+09:00
Subject: Re: Why Thread.abort_on_exception = yes doesn't show errors?

El Domingo, 20 de Julio de 2008, Iñaki Baz Castillo escribió:
> El Domingo, 20 de Julio de 2008, Joel VanderWerf escribió:
> > You have more control this way,
> > but you have to remember to either set abort_on_exception or to wrap
> > your thread in a handler or to join the thread later. These are three
> > styles, each of which has its place.
>
> Well, thanks for the explanation but I have a doubt.
>
> I run a thread "t2" inside thread "t1" but I don't want "t1" to wait to
> "t2" to finish, this is: I don't need "t1" joins "t2".
>
> I also don't want the main program ends because "t2" produces an exception
> that nobody handles, but I want to see the error. Is not a way to get this
> behaviour?
>
> The only solution I see is t1 joins t2, is it?

Humm, but this is not valid for me, I explain why:

I'm using GServer, so it creates a Thread for each incoming TCP connection and 
runs "serve" method for each one.

In "serve" method I parse the TCP incoming data and process it, but I need 
this connection to remain open and accepting new data even if the received 
data hasn't be processed yet (it's a SIP server). So, in resume I do:


---------------------------------
class GServer

	# New Thread for a new IO.
	def serve(io)

		loop do

			data = read_IO_incoming_data()
			Thread.new {
				Logic::process(data)
			}

		end # loop

	end # def serve

end # class GServer
-------------------------------

As you see, I need the TCP connection remains open and available ALL the time, 
I can wait to process the last received data, so I run a Thread and repeat 
**inmediately** the loop.

Also I need that if an exception occurs in Logic::process(data) it being shown 
but don't stop the programm (abort_on_exception = false). But in this way I 
can't see the error output if it occurs.

How could I get showing the error into the Thread without doing a "join"? (I 
can't do a join).

Thanks a lot for any suggestion.


-- 
Iñaki Baz Castillo