Re: [boost] Boost.Threads, N2178, N2184, et al

From: Anthony Williams (anthony_w.geo_at_[hidden])
Date: 2007-03-23 05:20:09

Anthony Williams <anthony_w.geo_at_[hidden]> writes:

> Actually I think the store can be
> ordinary too since it's also done under a lock, and the unlock has (or should
> have, anyway) release semantics.

No, you're right --- the store needs to be store_release, since we need to
ensure that the results of f() are visible before the stored flag value has
been stored. The release at mutex unlock is potentially too late.

Anthony
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Anthony Williams
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