Harry Ohlsen
10/3/2003 4:11:00 AM
Richard Kilmer wrote:
> You will be able to script the debugging of Java programs. You can do
> stuff like freeze the JVM, set breakpoints, walk variable values, set
> them, resume the vm, etc...all from Ruby.
Sounds pretty cool. I could see this being very handy for doing stress testing and for helping to track down horrible timing bugs.
> As an interesting test I froze all threads running on 60 JVMs (across 60
> servers) in a multiagent system. It froze all 60 in under a second. I
> then resumed all threads 10 minutes later and the system just went along
> not knowing it had "lost time" so to speak.
Cute.
> Chad Fowler and I working on this...he is working on the higher level
> API...I just implemented the low-level wire protocol. Its interesting
> because I actually wrote a set of classes to be able to describe the
> protocol (packets, data types, etc) then wrote a generator that uses
> those metadata objects to generate the ruby implementation (complete
> with rdoc!). The result is a 500 line generator (which is kinda hairy
> code) that generates the low level packets which is over 5000 lines of
> code.
Another chapter for "Code Generation in Action" :-).
It also sounds like another good way to ease Java people into playing with Ruby.
I look forward to seeing the first release.
H.