[jcifs] threading

[Christopher R. Hertel]

On Sun, Feb 23, 2003 at 12:31:06AM -0500, Dan Dumont wrote:
> That's fine with me, perhaps I did not make my intentions clear.  I
> don't mind if it blocks the thread.  What I do mind is that it blocks
> all other threads trying to connect also.
> 
> The whole program locks up while I wait for one thread to connect.  

That's because blocking occurs at the host OS process level.  I *believe*
that when a Java thread performs an operation that causes the JVM to call
a blocking system call, the entire JVM instance (which exists as a single 
OS thread) will block.

This may depend upon the implementation, since some implementations may 
behave differently (that is, they may implement threading differently).

I am doing a bit of guessing here, based on my earlier experience with 
blocking DNS lookups under Java (many years ago).

Here's an interesting reference I stumbled upon:

  http://www.cs.berkeley.edu/~mdw/proj/java-nbio/

Chris -)-----

-- 
Samba Team -- http://www.samba.org/     -)-----   Christopher R. Hertel
jCIFS Team -- http://jcifs.samba.org/   -)-----   ubiqx development, uninq.
ubiqx Team -- http://www.ubiqx.org/     -)-----   crh at ubiqx.mn.org
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