[Nestedvm] Mkisofs

Paulo Levi i30817 at gmail.com
Sat Jul 25 21:15:29 EDT 2009


(id like to make a visual compiler of dvd's/cd in java so i don't need
admistrative rights just to alter a dvd)

Anyone already tried to compile this program in nested vm?
And is the nested vm output actually callable from plain java code

(i guess i can use a process function like this:)
    /**
     * This method creates a new process that will run a new jvm
     * on the main of the given class, with the selected arguments.
     * It already flushes the output and inputstream of the forked jvm
     * into the current jvm.
     * The forked jvm uses the same java.exe and classpath as the current
     * one.
     * @param javaClass class with main method
     * @param args jvm properties.
     */
    public static void forkJavaAndWait(Class klass, String... args)
throws IOException, InterruptedException {
        String javaExe = System.getProperty("java.home") +
File.separator + "bin" + File.separator + "java.exe";
        String classpath = System.getProperty("java.class.path");
        List<String> l = new ArrayList<String>(4 + args.length);
        l.add(javaExe);
        l.add("-cp");
        l.add(classpath);
        l.addAll(Arrays.asList(args));
        l.add(klass.getCanonicalName());
        ProcessBuilder pb = new ProcessBuilder(l);
        pb.redirectErrorStream(true);
        final Process p = pb.start();
        //process builder stupidity (would need 2 threads if
redirectErrorStream(false))
        new Thread(new ProcessStreamConsumer(p),
"ProcessBuilderInputStreamConsumer").start();
        int e = p.waitFor();
        if (e != 0) {
            p.destroy();
            throw new IllegalStateException("couldnt fork the java
process, error code " + e);
        }
    }



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