[concurrency-interest] concurrency puzzle

[Brian Goetz]

We should update that document to not foster such confusion.

Peter Veentjer wrote:
> I you look at the following documentation:
> 
> http://www.cs.umd.edu/~pugh/java/memoryModel/jsr-133-faq.html#volatile
> 
> They talk about cache invalidation:
> if a lock is obtained, the cache is invalidated.
> 
> So occording to this documentation, the write x=20 could get lost if
> it isn't flushed to main memory and this makes 0 a possible output
> value.
> 
> So what should I believe?
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