Re: [boost] [lockfree] review

Subject: Re: [boost] [lockfree] review
From: Peter Dimov (pdimov_at_[hidden])
Date: 2011-08-27 08:29:47

Alexander Terekhov wrote:

> Consider also that
>
> "Load Seq_Cst: MOV (from memory)
> Store Seq Cst: (LOCK) XCHG // alternative: MOV (into memory),MFENCE"
>
> is an overkill for typical use cases...

But that's not a problem because everyone who understands should use 
explicit constraints, even if they happen to be memory_order_seq_cst. 
Relying on the SC default is bad practice because it can (and, to be on the 
safe side, should) be interpreted to mean that the author just hasn't 
figured out the minimum requirements.