search for: jvms

...t;-Djava.class.path=%s",clap); JavaVMInitArgs args; JavaVMOption options[2]; args.version = JNI_VERSION_1_4; args.nOptions = 2; options[0].optionString = classpath; options[1].optionString = "-Xrs"; args.options = options; args.ignoreUnrecognized = JNI_TRUE; JavaVM *jvms[32]; jsize vms=0; int r=0; r=JNI_GetCreatedJavaVMs(jvms, 32, &vms); if (r) { error("JNI_GetCreatedJavaVMs returned %d\n", r); } else { if (vms>0) { int i=0; while (i<vms) { if (jvms[i]) { if (!(*jvms[i])->AttachCurrentThread(jvms[i], (v...

Hi, I need the description of LLVM instructions on bitcode file. I can't find it on any document. Reading the code costs much time. Does a description like this exist ? It should look like the JVM Instruction set on the link bellow: http://java.sun.com/docs/books/jvms/second_edition/html/Instructions2.doc.ht ml Thanks for any advise. Quang

...is based on LLVM which can also run C++ code (maybe in the same just-in-time compiler?) I guess calls from Java to C++ and back could be much faster than in Sun's JVM which has extremely slow C++ -> Java callbacks. If this was the case, this would be a big advantage of VMKit over all other JVMs and mixing existing C/C++ libraries with Java would be as easy as in the glue language Python. All the best Bruno Daniel

...n once > everything is working well look into improving the code quality. > > Ciao, > > Duncan. > Interesting. After doing some more research, I noticed that Java uses a jsr to implement 'finally', at least according to this document: http://java.sun.com/docs/books/jvms/second_edition/html/Compiling.doc.html -- Talin

...un C++ code > (maybe in the same just-in-time compiler?) I guess calls from Java to C++ > and > back could be much faster than in Sun's JVM which has extremely slow C++ -> > Java callbacks. > > If this was the case, this would be a big advantage of VMKit over all other > JVMs and mixing existing C/C++ libraries with Java would be as easy as in > the > glue language Python. > While mixing C/C++/Java with the same compiler seems appealing for performance, Java has a garbage collector, and a garbage collector does not cope well with native frames. It requires obj...

...File, as well as 2 bugs in the tag handling code. Hi Hans, the fact that you're packaging it for games not applet use addresses my concern. Thank you, and thanks for your efforts here. I believe debian actually packages it as an applet. You should be aware that cortado targets a wider set of JVMs than Jorbis. In particular Cortado will run on the old MS JVMs that jorbis will not (unless this has changed and it wasn't mentioned in the jorbis changelog). Syncing up with jorbis fixes sounds like a great idea, but it's going to at least require some basic testing in old JVMs, which is...

Hi there, I am trying to diagnose a performance problem on a Sun T5120 running Solaris 10. I see general poor performance using Java and, in particular, loading classes. I have developed a simple java test that loads all of the classes in a Crystal Reports JAR file (around 7000 classes) which takes much longer on the T5120 (40 secs) than on a Core 2 Duo windows PC (5 secs). I recognise that this

In our environment we have many legacy application servers running apache/jserv. There is a web server front end, then a couple of load-balanced java servers on the backside. One of the problems we are faced with is hung or stuck jvms. I have looked at the java process with the ps command, and there are many times when URL(s) do not respond, yet the java looks healthy, at least from the OS point of view. The usual cure for this situation is to restart the JVM, then the URLs come right back up. Are any of you aware of tools fo...

...in the same just-in-time compiler?) I guess calls from Java to C++ >> and >> back could be much faster than in Sun's JVM which has extremely slow C++ -> >> Java callbacks. >> >> If this was the case, this would be a big advantage of VMKit over all other >> JVMs and mixing existing C/C++ libraries with Java would be as easy as in >> the >> glue language Python. >> > > While mixing C/C++/Java with the same compiler seems appealing for > performance, Java has a garbage collector, and a garbage collector does not > cope well wit...

Has anyone attempted to run Rails inside of JRuby? Is that even possible? Aside from the performance implications, is it a bad idea? I''m thinking that it might be useful in very rare cases where a Ruby/Rails - equivalent of a Java solution may not exist yet. Any thoughts? Wes -- Posted via http://www.ruby-forum.com/.

...If we're going to make a superset of C++, why not ditch C++ outright and just write a code converter to a friendlier high-level language. Sorry if I'm not making much headway with you right now but I'm just trying to save work by using existing code wherever possible to save work. Most JVMs perform terribly. Even Sun's has had notable performance issues in my experience. .NET is an excellent case, but then that's only available on Microsoft systems and from numerous benchmarks I've found, Mono is a weak substitute. If you're suggesting that we go the other way aroun...

Hi, I'm looking for a way to map bitcode to the source code (C/C++) from which it was generated. For example, the Java class file format has an optional LineNumberTable attribute that maps each bytecode instruction to a source code line number: http://java.sun.com/docs/books/jvms/second_edition/html/ClassFile.doc.html#22856 Is there something analogous in the LLVM environment? Thanks, Trevor

...leader of GNU Classpath: http://gnu.wildebeest.org/diary/index.php?p=129 And after that I have a question, if somethinl like Mauve exists also for WINE/ReactOS? GNU Classpath is a OpenSource-Version of the Java Standard Edition Classes. And Mauve are testclasses, which test, that the OpenSource JVMs with GNU Classpath are still working right and don't have bugs. But, existing something like Mauve also for WINE/ReactOS ? Greatings theuserbl

Hi, I know this is a strange mail and also off topic but since there is no user-list I'll simply post my stuff here ;) I wanted to say a big thank-you for developing llvm, I've always been fascinated by agressive optimizing frameworks like JVMs and other virtual machines and was a bit sad that the gnu-world relies(d) on techniques which have more or less reached their possibilities. Although I would call myself an end-user developer, its great to see people working on such cool stuff :-) lg Clemens PS: One things about which I was not a...

...I need the description of LLVM instructions on bitcode file. I can't > find it > on any document. Reading the code costs much time. Does a > description like > this exist ? It should look like the JVM Instruction set on the link > bellow: > http://java.sun.com/docs/books/jvms/second_edition/html/Instructions2.doc.ht > ml http://llvm.org/docs/LangRef.html -Chris

...rom: Nate Fries <nfries88 at yahoo.com> > To: Samuel Crow <samuraileumas at yahoo.com>; LLVM Developers Mailing List <llvmdev at cs.uiuc.edu> > Cc: > Sent: Friday, June 3, 2011 6:52 PM > Subject: Re: [LLVMdev] Thinking about "whacky" backends > > Most JVMs perform terribly. Even Sun's has had notable performance issues in > my experience. > .NET is an excellent case, but then that's only available on Microsoft > systems and from numerous benchmarks I've found, Mono is a weak substitute. > If you're suggesting that we go...

...hould not be enforcing C language semantics, or at least should allow such optimizations to be disabled. Case in point — calls/loads/stores to null may be undefined behavior in C, but they're certainly not undefined behavior in (say) Java. There's a well- known implementation trick in JVMs where you optimistically emit code assuming non-null objects, and then you install signal handlers to raise exceptions in the cases where you're wrong. Now, obviously that trick is going to have implications for the optimizers beyond "don't mark null stores as unreachable" , but...

It should probably not be necessary in my case to compile a custom version of the Cortado applet-the official binary works fine, and may be advantageous over a locally-compiled version (regarding compatibility with 1.1-era JVMs), as was mentioned in a previous message. My interest was to include the corresponding source code when distributing the official binary (i.e. as would be required for license compliance and for any users who had a technical interest in source code.) When distributing the official Cortado applet b...

...alias (what if malloc returns null? if null is valid then you can store data there...). Case in point — calls/loads/stores to null may be undefined behavior > in C, > but they're certainly not undefined behavior in (say) Java. There's a > well- > known implementation trick in JVMs where you optimistically emit code > assuming non-null objects, and then you install signal handlers to raise > exceptions in the cases where you're wrong. Now, obviously that trick > is going to have implications for the optimizers beyond "don't mark null > stores as unre...

Hi, Does LLVM have java frontend which can change Java bytecode to LLVM IR? Thanks a lot! Best, Linhai -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160112/1d9c0c7b/attachment.html>