i think you can if you use the jvm agents like eclipse does to modify running bytecode, but there are lots of restrictions
On 1/30/08, Attila Szegedi <[EMAIL PROTECTED]> wrote: > > I don't see this being possible in a current JVM. You can not modify > the contents of a method. The only way to bring new executable content > into a running JVM today is through defineClass(). Once defined, you > can't modify it. > > John Rose has a good proposal for solving this with anonymous classes > in the Da Vinci VM. > > Attila. > > On 2008.01.28., at 10:40, Yardena wrote: > > > Also one more thought - could we create a pool of classes that have > > single method something like invoke(Class[], Object[]), then track the > > references ourselves and instead of creating new class modify the > > contents of the method in existing but unused class? > > > > Yardena. > > > > On Jan 19, 5:05 am, Charles Oliver Nutter <[EMAIL PROTECTED]> > > wrote: > >> Kresten Krab Thorup wrote: > >>> So what I suggest is to have a new special kind of class loader > >>> (TransientClassLoader maybe) which doesn't have the strong link to > >>> classes loaded by it. If this was a new class, then no existing > >>> code > >>> would be broken by it; and so the new semantics for when a class is > >>> eligible for class unloading would only apply to classes loaded by > >>> transient class loader (ad subclasses thereof). > >> > >> This is *exactly* what I want. Unfortunately the only way to get it > >> right now is to hack the JDK or create your own version that calls > >> out > >> to JNI to define the underlying class. But such an addition would > >> be a > >> trivial piece of code to add to JDK. > >> > >> - Charlie > > > > > > > > -- []'s Marcelo Takeshi Fukushima --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
