Re: [boost] Mutex vs Semaphore

Subject: Re: [boost] Mutex vs Semaphore
From: Jean-Sebastien Stoezel (js.stoezel_at_[hidden])
Date: 2009-04-03 08:24:59

Interesting, thanks for the explanaition.

On 3-Apr-09, at 5:27 AM, Dmitry Goncharov wrote:

>
>
> Jean-Sebastien Stoezel wrote:
>> Thanks for the quick reply. Using conditon variables sounds quite  
>> heavy. You need to instantiate a mutex, a condition variable and a  
>> flag...
>> Would there be anything wrong with instantiating a semaphore from  
>> the interprocess library to provide inter-thread synchronization?
> You can use a semaphore from the interprocess library to provide  
> inter-thread synchronization.
> An interprocess semaphore is a thin wrapper around a posix semaphore  
> if BOOST_INTERPROCESS_POSIX_SEMAPHORES is defined.
> Otherwise, a semaphore is emulated with a mutex and a condvar.
>
>> By the way, why isn't there any semaphore available in the thread  
>> library?
>>
> The boost.Crypto library is going to provide some.
>
> BR, Dmitry
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