Re: [boost] [singleton] call_once

From: John Maddock (john_at_[hidden])
Date: 2005-09-13 11:29:12

> Calls through call_once are only atomic with respect to other calls that
> reference the same once_flag. If you want mutual exclusion, you need a 
> shared
> mutex --- why not just create a function-local static mutex, lock it 
> before
> your function call, and unlock it afterwards?

I hope not! There will be a race condition in the construction of the 
function-scope static mutex.

John.