Re: [boost] Bug in sp_counted_base and atomic_count?

From: Dmitriy V'jukov (dvyukov_at_[hidden])
Date: 2007-04-19 05:12:06

Peter Dimov wrote:

> There's also a hidden ordinary store to the vtable pointer. In general,
when
> passing an object X from thread A to thread B, you are expected to ensure
> the necessary visibility (and not the author of X). Usually the queue that

> you're using for message passing will contain the acquire/release pair in
> pop/push. Otherwise you wouldn't be able to pass ordinary objects between
> threads. Or to take a simple example:

Thank you very much. Now I understand.
I underestimate the "pass to another thread" procedure, that must contain
all necessary fences to ensure visibility of counter variable.

Dmitriy V'jukov