[concurrency-interest] Reordering clarification in DCL example

Joe Bowbeer joe.bowbeer at gmail.com
Sat May 2 14:56:01 EDT 2009


On Sat, May 2, 2009 at 10:10 AM, Carol Saah wrote:

>  Tim,
>
> Thanks.  I’m not trying to find a way to fix DCL.  I am familiar with Item
> 71 in Effective Java.  And, section 16.2.4 of the Java Concurrency in
> Practice does not answer my questions.
>
> I’m trying to understand exactly what goes on under-the-covers when the
> compiler reorders code in incorrectly synchronized code.
>
> The example given in the old article does touch on what I am interesting in
> understanding.
>
> Carol
>

If you haven't already, check out Doug Lea's cookbook for compiler writers:

http://gee.cs.oswego.edu/dl/jmm/cookbook.html

and imagine that the loads and stores are "normal".

Joe
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