Andrey Chernyshev wrote: > With some changes I was able to run the DRLVM with classlib's > launcher. Here is what I did (you can see the experimental patch at > http://issues.apache.org/jira/browse/HARMONY-857):
This is very cool. Why experimental? what is the big problem if we accept it and go on from there? [SNIP] > > (1) > DRLVM startup is organized a bit differently compared to the classlib > launcher startup, namely – the DRLVM after creating VM runs a special > class called VMStart which is, in it's turn, asynchronously calling > the main() method of the user application in a separate thread. > When we go with the classlib's launcher, the main() method is executed > in the same thread where the JavaVM is created. > What are the caveats with that? And why is that? [SNIP] > (4) > Launcher wants the vm dll in the "default" directory unless the option > is specified. Should we realign the drlvm build output and move all > dll's into the "default" subdir? I think so. > > (5) > What to do with the "_org.apache.harmony.vmi.portlib" option that > launcher is offering to VM? > > Most likely there are more issues that I'm overlooking at the moment. > Please consider the suggested patch is a workaround to make the things > working, I'm wondering if there is a more graceful way to do this. It's better that what we have, and we can just build on from here... geir > > Thanks, > Andrey. > > > On 7/11/06, Andrey Chernyshev <[EMAIL PROTECTED]> wrote: >> OK, so I'm going to add CreateJavaVM into vm\vmcore\src\jni\jni.cpp >> and also add implementation into DestroyVM (stub is already seem to be >> present there) based on destroy_vm(). Then we'll see how it works with >> the launcher. >> >> Thanks, >> Andrey. >> >> >> On 7/11/06, Geir Magnusson Jr <[EMAIL PROTECTED]> wrote: >> > This has been my thinking - even if not perfect, lets get it working >> > using the launcher and then fix as required. It's arguable if that >> > "brokenness" matters at this point, and I think that there's plenty to >> > be gained from having it work via the launcher. >> > >> > geir >> > >> > Rana Dasgupta wrote: >> > > create_vm() looks quite close/complete to being a complete >> prototype for >> > > CreateJavaVM, >> > > but I think more work is needed in DestroyVM which prototypes >> DestroyJavaVM >> > > for functional completeness. It is non waiting on user threads, it >> does not >> > > send the corresponding JVMTI shutdown events, I also don't know if it >> > > handles shutdown hooks cleanly ( but these "may" not be critical >> right now >> > > for hooking up to the launcher ). What do you think? >> > > >> > > When I ran a non trivial test.. upto 32 threads instantiating a >> very large >> > > number of objects with -XcleanupOnExit which uses >> DestroyVM, it >> > > exited cleanly. Maybe OK to hookup and fix bugs as we go. >> > > >> > > Thanks, >> > > Rana >> > > >> > > >> > > On 7/10/06, Andrey Chernyshev <[EMAIL PROTECTED]> wrote: >> > > >> > >> >Yes, it seems like the launcher will need at least JNI_CreateJavaVM >> > >> >and DestroyJavaVM functions. >> > >> >> > >> >I couldn't find implementation for CreateJavaVM in drlvm codebase. >> > >> >Perhaps create_vm() function in vm\vmcore\src\init\vm_main.cpp >> can be >> > >> >adopted for that purpose? >> > >> >Is there are any tricks and caveats one should be aware of before >> > >> >trying to produce CreateJavaVM from it? >> > >> >> > >> >I've also seen a prototype for DestroyJavaVM in >> > >> >vm\vmcore\src\init\vm.cpp - comment says it needs to be improved to >> > >> >wait till all Java threads are completed. >> > >> >> > >> >Any more ideas what needs to be done to implement those? >> > >> >> > >> >Thanks, >> > >> >Andrey. >> > >> >> > >> >> > >> >> --------------------------------------------------------------------- >> > >> Terms of use : http://incubator.apache.org/harmony/mailing.html >> > >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> > >> For additional commands, e-mail: >> [EMAIL PROTECTED] >> > >> >> > >> >> > > >> > >> > --------------------------------------------------------------------- >> > Terms of use : http://incubator.apache.org/harmony/mailing.html >> > To unsubscribe, e-mail: [EMAIL PROTECTED] >> > For additional commands, e-mail: [EMAIL PROTECTED] >> > >> > >> >> >> -- >> Andrey Chernyshev >> Intel Middleware Products Division >> > > --------------------------------------------------------------------- Terms of use : http://incubator.apache.org/harmony/mailing.html To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
