[boost] Re: Singleton

From: Alexander Terekhov (terekhov_at_[hidden])
Date: 2005-01-12 14:49:03

Jason Hise wrote:
[...]
> Please elaborate.  I have very little threading background.  What
> exactly is a synchronized static local?  Is this a class or object level
> mutex, or something entirely different? 

It is a C++ incarnation of ages-old pthread_once(), so to say. For 
details, see:

http://www.google.de/groups?selm=3EBB8DDC.C81DF4AE%40web.de
http://www.google.de/groups?selm=41496597.F54DD01A%40web.de
 
>                                         The "some compilers" part
> worries me a bit, as I would like this library to be portable. 

Yeah.
 
>                                                                When you
> refer to atomic<>, I presume you are referring to operations that are
> indivisible at the processor level. Are there such operations that can
> be assumed to be atomic on every processor, 

Atomicity is only one aspect. The rest is MT memory model with 
explicit reordering constraints coupled with atomic<> operations 
and a few bidirectional fences.

>                                             or would I be using a large
> boost library that defines common atomic operations based on the
> compiler, processor, and operating system?  

Read this thread:

http://www.google.de/groups?threadm=41E3B870.CA6DDE9D%40web.de

regards,
alexander.