Wed Aug 19 13:04:24 CEST 2009

GC restarts

When this keeps growing, it's probably going to be a good idea to get
rid of the GC restarts, and scan the C stack for references to update.
Restarting works well for simple functions, but with more complicated
C functions and these functions calling each other, the invariants (no
alloc after mutation) are not so easy to maintain.