From: ara.t.howard@...
Date: 2006-07-06T07:43:54+09:00
Subject: Re: thread mystery

On Thu, 6 Jul 2006, Eric Hodel wrote:

> Why aren't those threads getting GC'd?

this is pretty suspect

file: sync.rb

245   def sync_initialize
246     @sync_mode = UN
247     @sync_waiting = []
248     @sync_upgrade_waiting = []
249     @sync_sh_locker = Hash.new
250     @sync_ex_locker = nil
251     @sync_ex_count = 0
252   end
253
254   def initialize(*args)
255     sync_initialize
256     super
257   end
258
259   def sync_try_lock_sub(m)
260     case m
261     when SH
262       case sync_mode
263       when UN
264         self.sync_mode = m
265         sync_sh_locker[Thread.current] = 1
266         ret = true


note that unlocking never releases the reference!  i'm going to test a patch
using something like


249     @sync_sh_locker = Hash.new{|h,k| h[k] = 1}
265         sync_sh_locker.delete Thread.current


... more later ...

-a
-- 
suffering increases your inner strength.  also, the wishing for suffering
makes the suffering disappear.
- h.h. the 14th dali lama