[Boost-users] Re: You provide gun, I provide foot.

From: Rene Rivera (grafik.list_at_[hidden])
Date: 2005-04-07 09:55:41

C. Michailidis wrote:
> Quoting from 
> http://www.boost.org/doc/html/threads/concepts.html#threads.concepts.mutexes
> 
> "Many C++ threading libraries use a pattern known as Scoped 
> Locking[SchmidtStalRohnertBuschmann] to free the programmer from the need to 
> explicitly lock and unlock mutex objects. With this pattern, a Lock concept 
> is employed where the lock object's constructor locks the associated mutex 
> object and the destructor automatically does the unlocking. The Boost.Threads 
> library takes this pattern to the extreme in that Lock concepts are the only 
> way to lock and unlock a mutex object: lock and unlock functions are not 
> exposed by any Boost.Threads mutex objects. This helps to ensure safe usage 
> patterns, especially when code throws exceptions."
> 
> Unfortunately, I actually WANT to shoot myself in the foot this time and 
> Boost.Threads won't let me!!!  I can understand ENCOURAGING users to write 
> safe code, but forcing them to is outright fascist!

Read the above carefully... It doesn't say there aren't lock/unlock 
calls. Only that mutexes don't provide them. You are free to shoot 
yourself by manually locking and unlocking "Locks". Which will 
lock/unlock the associated mutex.

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