Re: [boost] [interprocess] Atomic ops supports for Alpha processors.

From: Markus Schöpflin (markus.schoepflin_at_[hidden])
Date: 2007-10-23 03:47:32

Peter Dimov wrote:
> Markus Schöpflin:
> 
>> Peter,
>>
>> I have read your paper referenced above and a few of the other papers
>> dealing with atomic ops, but I failed to find a clear definition of what
>> 'acquire' and 'release' semantics are supposed to mean. Could you point
>> me into the right direction, please? Also, in your paper you're
>> referring to [intro.concur], where could I find this?
> 
> I think that the relevant paper at the moment is
> 
> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2334.htm
> 
> Basically, if a thread A load-acquires a memory location that has been 
> store-released by thread B, then after the load thread A is guaranteed to 
> see the updates that thread B has done prior to the store. 

Thank you.
Markus