Re: [boost] [thread] best practice to lock multiple mutexes

From: Peter Dimov (pdimov_at_[hidden])
Date: 2008-02-08 17:22:46

> Howard Hinnant:
>
>> Here are results (dating around 3 years ago):
>>
>> In order:  63 seconds.
>> try/back off/without yield:  47 seconds.
>> try/back off/with yield:  34 seconds.
>
> With Alexander Terekhov's "swap-based mutex", I'm not seeing a significant
> difference between the versions with and without yield. The penalty likely
> comes from spin-waits in lock() (which is why they're evil).

There's no significant difference with critical sections, too. Maybe I'm 
doing something wrong. :-)