From: John Briggs <aazman.w@...>
Date: 2010-04-21T23:25:05+09:00
Subject: Ruby 1.9.1, Threads and "[BUG] The handle is invalid."

Hi!

I am new to this forum so this is my first post.

I have Ruby 1.9.1 on Windows 7 and I am trying to make a program that
will do some jobs in threads.
A simplified version of what I want to do would look like this:

$threads_alowed = 700;
$threads = []

$threads_alowed.times{|thread_id|
$threads[thread_id] = {'thread' => Thread.new{}}
puts "thID #{thread_id} initialized"
}

def do_something(thread_id)
wait = rand(300)
print "\nThread #{thread_id} is doing something for #{wait} seconds"
sleep wait
end

while true do
$threads_alowed.times{|thread_id|
status = $threads[thread_id]['thread'].status
if status == false or status == nil
$threads[thread_id]['thread'] =
Thread.new(thread_id){do_something(thread_id)}
print ","
end
}
print "."
sleep 0.03
end

It seems to work but often I get the following error:


[BUG] The handle is invalid.

ruby 1.9.1p378 (2010-01-10 revision 26273) [i386-mingw32]

-- control frame ----------
---------------------------
-- Ruby level backtrace
information-----------------------------------------

[NOTE]
You may encounter a bug of Ruby interpreter. Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html


This application has requested the Runtime to terminate it in an unusual
way.
Please contact the application's support team for more information.


and all the script crashes.

I tried to run the same script on CentOS and it is working without
problems, but I can not stick to just one OS. I need this script to work
on every OS that Ruby runs on.

So my question is: Does anybody know how to get rid of this error on
windows or maybe any workaround and what this error mean?
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