Not working with ActionMailer from Rails 3.2.3

[pduersteler]

I am trying to use ActionPool with ActionMailer from Rails 2.3.2 (ruby 1.9.3). It seems that every call to .deliver somehow stops the thread. I don't even get a hint when surrounding it in a rescue block, there is just a stop and that's it.

pool = ActionPool::Pool.new

2.times do
  pool.process do
    @log.debug "#{Thread.current} sending"
    ::SystemMailer.testmail('john@doe.com').deliver
    @log.debug "#{Thread.current} sent"
  end
end

pool.shutdown
@log.debug "pools shutdown"

Output:

#<Thread:0xadb4548> sending
#<Thread:0xadb5d30> sending
pools shutdown

This however works when doing Thread.new and joining them afterwards, without the use of ActionPool.

[chrisroberts]

A bit of changes have been made to actionpool and the splib library it depends on. Could you adjust your Gemfile to use the git repo for both splib and actionpool and see if this problem persists.