[hga]

Thanks a lot for the reply and creating that web page (http://www.corensic.com/Products/PricingandLicensing.aspx).

As it turns out, the (reduced cost, I assume) non-commercial version will be just right for what I'm thinking of doing in this space. And of course I'll sing the praises of Jinx to the extent it helps me find the nasty types of bugs it's designed to.

Hmmm, one of the most interesting (at least to me) projects I'm thinking of in this space is a hypervisor based multi-threaded/core Appel-Ellis-Li garbage collector. It's based on marking pages unreadable to implement a read barrier and its preformance is very dependent on the speed of handing read traps, which is not something normal operating systems optimize since that's normally an error.

To allow concurrency, the GC itself has to live in the hypervisor or thereabouts, where it isn't barred from reading pages that are unreadable at the user level.