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Subject: Re: Volatile happens before question
Date: Tue, 17 Jan 2012 16:14:52 -0800
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On 1/17/2012 3:46 PM, Knute Johnson wrote:

> And to quote Goetz "When a field is declared volatile, the compiler and
> runtime are put on notice that this variable is shared and that
> operations on it should not be reordered with other memory operations."


To get that behavior, you have to actually read from the volatile after 
writing to it.  Check the JLS.  Both threads must participate in the 
happens-before operation, or this *is no* happens-before behavior.