Re: Stack and Thread Safety

From: Chris Smith (cdsmith_at_twu.net)
Date: 06/30/04 

Date: Wed, 30 Jun 2004 08:07:42 -0600

Sebastian Scheid wrote:
> No you cannot. Stack could have thread unsafe parts in it. But in fact it
> has not. Its methods are synchronized. So Stack is threadsafe but not
> because in extends Vector!

It's worth pointing out here that "thread-safe" is a rather vague term
here. To reason about correctness of a multithreaded program, you need
to do more than ask if everything you use is "thread-safe". For
example, if I needed to push three values consecutively onto a stack,
I'd still need to take out a monitor on that stack to ensure that the
set of tree push operations are atomic. 

-- 
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