From: Brian Candler <b.candler@...>
Date: 2008-09-19T19:31:07+09:00
Subject: Re: Garbage collecting threads?

>> Looking at your example, your workers still have references to your 
>> queue and
>> to the farmer, which means the farmer will never be collected.
> 
> I don't think you understand. If A holds a reference to B, then that 
> may(*) prevent B from being garbage-collected, but it definitely doesn't 
> prevent A from being garbage-collected.

Sorry I didn't read your post exactly - I overlooked that you wanted the 
workers to contain a reference to the farmer. But even then the 
conclusion is still correct.

If the farmer and the workers form an isolated subgraph of objects - 
e.g. there are no other references to them from the stack or from global 
variables or from other objects - then they will all be garbage 
collected together.
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