[vardump]

> Edit: While we're here; may I ask how you break out of the dispatch loop? Do you test an end-condition on each iteration? ...

For what it is worth my JITter uses mprotect from other thread to change page permissions to generate an exception to break out of JITted code. Same would work for dispatcher as well.

The advantage is it's completely free performance wise while the code is running. The need for signal handler is less awesome.