Re: [DotGNU]Engine updates

[Gopal V]

Hi,

> Monitors are now much faster than they were in 0.1. 
> Thanks to ideas and encouragement from Russell 
> Stuart and a few optimisations and  simplifications 
> of the algorithm, the code runs several orders of 
> magnitude faster than the monitors in 0.1  (by 
> my tests, over 200 times faster).  This
> should speed up the class library in general.

Monitors are used in each and every Xsharp 
call in the Windows.Forms, so I think this 
should be seen as a very good thing for 
Winforms performance :)

> use of synchronization (remember: pnetlib uses
> synchronization).

I counted at least ~500 locks in pnetlib ...
Especially since even a Console.WriteLine() goes
though a lock .. this is a Good Thing (tm).

> The monitor enter/exit algorithms are designed to
> eliminate context switches
> into kernel mode by avoiding "fat" OS-locks
> (therefore avoiding system
> calls) and as I mentioned above, are now much faster
> than they were before.

This I suppose , should solve the NPTL issues ?..

> GC
> --
> 
> Foundations for typed allocation have been laid (see
> include/il_gc.h).
> Typed-allocation will allow us to decrease the
> chances that objects won't be
> collected or finalized by letting us tell the GC
> which words within an
> object contain pointers and which don't.

Yay ! ..

Gopal


        
                
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