From: Lloyd Zusman <ljz@...>
Date: 2004-08-04T01:36:50+09:00
Subject: Difference between join and ThreadsWait.all_waits

Consider the following two examples:

1. Using join:

     threadlist = []

     ARGV.each {
       |arg|
       threadlist << Thread.new(arg, &aThreadProc)
     }

     threadlist.each { |t| t.join }

     exit(0)

2. Using ThreadsWait:

     require 'thwait'

     threadlist = []

     ARGV.each {
       |arg|
       threadlist << Thread.new(arg, &aThreadProc)
     }

     ThreadsWait.all_waits(threadlist)

     exit(0)   
             
Is there any difference between these two ways of doing this?

Is the only advantage of the 'ThreadsWait#all_waits' method over 'join'
the fact that the former allows for an optional proc to be invoked to
clean up after each thread when it terminates?

I realize that the ThreadsWait class has other useful methods.  I'm just
asking specifically about its 'all_waits' method.

Thanks in advance.


-- 
 Lloyd Zusman
 ljz@asfast.com
 God bless you.