Charles Oliver Nutter a écrit : > Rémi Forax wrote: > >> I have seen an impressive boost by generating StackMap infos, >> particularly when generated codes use overlaped exception handlers. >> > > Can you describe how to do that and exactly what it is? I'm not familiar > with it. > Java 1.6 (JSR202) introduces a new verifier named split-verifier (technically this technology comes from J2ME) that is able to verify the bytecode in one pass using informations stored in a special attribute named StackMap. https://jdk.dev.java.net/verifier.html
I use ASM that is able to generate StackMap using flag |COMPUTE_FRAMES| when creating a ClassWriter. The algorithme used by ASM is described here: http://asm.objectweb.org/doc/developer-guide.html#controlflow Unlike JRuby, I don't generate code at runtime so I have no idea about the overhead introduced by enabling stack map computation. > - Charlie > Rémi --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "JVM Languages" group. To post to this group, send email to jvm-languages@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/jvm-languages?hl=en -~----------~----~----~----~------~----~------~--~---
