Re: [Boost-users] Trying to get Boost.Interprocess going on OS X 10.5.1

From: Lars Hagström (lars_at_[hidden])
Date: 2007-11-29 02:33:16

Maybe the mutexes don't guarantee it on all platforms?
I found this when looking for stuff about mutexes on linux:
http://lxr.linux.no/source/Documentation/robust-futexes.txt
And it appears to guarantee robustness.

Cheers
Lars

Ion Gaztañaga wrote:
> Lars Hagström wrote:
>> How about adding (as an option?) this kind of behaviour to the emulated
>> mutexes in interprocess?
> 
> I could provide a macro to use emulated mutexes/conditions instead of 
> native ones.
> 
>> The Posix mutexes I assume guarantee some kind of robustness, so that if
>> a process crashes its locks are released. by adding the below behaviour
>> we get reasonably close to that behaviour for the emulated mutexes.
> 
> I don't Posix mutexes provide much robustness but they provide much 
> higher performance, since emulation is based on atomic compare and 
> exchange plus spin-waits.
> 
> Anyway, I definitely need some help on Mac OS 10.5. I don't know if 
> anyway has used those process-shared mutexes in practice and if they 
> work at all.
> 
>> Cheers
>> Lars
> 
> Regards,
> 
> Ion
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