From: Peter Dimov (pdimov_at_[hidden])
Date: 2008-01-18 15:06:36
Giovanni Piero Deretta:
> Don't you need a mutex in the slow path to prevent two threads that
> both find s_ps null to
> try initialize s_x withoug mutual exclusion? Or are you assuming C++0x
> thread safe
> initialization of statics? In the latter case, isn't safe to assume
> that the compiler will already use a form of the above pattern anyway?
Yes, I'm assuming thread-safe initialization of s_x for illustration
purposes. Yes, I hope that the compiler will use the above pattern. I'm just
showing the proof of concept.
> BTW, slightly off-topic, will C++0x standardize load dependent memory
> According to the latest memory model paper, the then-current consensus
> was not to.
I'm not sure what happened to N2359-N2361. N2342 lists them as active.
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