Modify JVM to produce safepoints at every PcDesc?

[David Griffiths]

Hi, how feasible would it be to modify the JVM to create a safepoint
at every PcDesc? I know performance would suffer but something of the
order of 30% slowdown would be fine. Basically I want access to all
local variables at every PcDesc rather than just method call/return
and backloops.

Cheers,

David