Re: [Boost-users] Boost.Thread locking across two functions

From: Pierre THIERRY (nowhere.man_at_[hidden])
Date: 2006-06-20 05:32:52

Le Sat, 10 Jun 2006 00:51:28 -0300, Bruno Martínez a écrit :
> You can protext the lock with another, short-lived, lock:
> 
> mutex m1;
> mutex m2;
> mutex::lock g_lk(m2, false);
> 
> lib_lock()
> {
>    mutex::lock lk(m1);
>    g_lk.lock();
> }
> 
> lib_unlock()
> {
>    mutex::lock lk(m1);
>    g_lk.unlock();
> }
> 
> This isn't 100% OK because the lock is used from different threads, but  
> should work.

As I'm new myself to MT programming, why isn't this 100% OK? I can't see
how it could fail.

Curiously,
Nowhere man
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