Subj : Re: full-blown experiential smr-based reference counted pointer impl...
To   : comp.programming.threads
From : Chris Thomasson
Date : Fri Apr 01 2005 02:19 am

> You also need a release ( load/store, store/store) barrier before dropping
> the hazard pointer reference (setting it to zero).


Humm...

If you wanted to implement this on sparc I guess you would need to do 
something like this:




// Acquire Hazard
 load target
loop:
 store target into hazard
   ( store/load )
 load target
   ( store/load + store/store )
 compare target with hazard, goto loop if non-equal




// inside gc region wrt target




// Release Hazard
   ( load/store + store/store )
 store null into hazard



Is that about it?




>
> Yes, you wouldn't use SMR for everything but there are definitely niche
> uses for it so it doesn't hurt to have it around.

True...

.