Clojurians Log v2
Clojure programming
Channels
Apps
jvm 2021-09-16
Anyone have recommendations for introductory content on jvm bytecode?
Alex Miller (Clojure team) 2021-09-16T16:05:33.001500Z
there is not a lot out there. there are some very old books. I have the one by Downing and Meyer from 1997 (!!) and still find it to be a useful reference
Alex Miller (Clojure team) 2021-09-16T16:06:30.002400Z
obviously stuff has been added since then, but surprisingly little
Ben Sless 2021-09-16T16:09:27.002800Z
Agreed. The spec is pretty readable
Ben Sless 2021-09-16T16:11:18.002900Z
Looking at some bytecode manipulation library can also be helpful
Alex Miller (Clojure team) 2021-09-16T16:11:36.003200Z
yeah, something like asm docs may be just as useful
Alright. I have some friends that have suggested a couple articles, but the jvm spec chapter 2 is the main place people are pointing me to.
And asm docs would be good. The library I'm looking at using for my needs for it is insn, which wraps asm
Alex Miller (Clojure team) 2021-09-16T16:15:18.004300Z
Alex Miller (Clojure team) 2021-09-16T16:19:43.004900Z
probably the best way to learn is to use javap to dump some bytecode then walk through it line by line with reference materials and write a translation
👍 1
Yeah, no.disassemble I've also heard is good
Alex Miller (Clojure team) 2021-09-16T16:30:13.005600Z
sure, same thing