Examples with JavaClassLoader com.ibm.dtfj.java.JavaClassLoader used on opensource projects

Example 31 with JavaClassLoader

use of com.ibm.dtfj.java.JavaClassLoader in project openj9 by eclipse.

the class InfoClassCommand method cacheRuntimeClasses.

/**
 * Pre-populates the classInstanceCounts map with just classes, and empty ClassStatistics objects.
 * The key-set of classInstanceCounts.get(someRuntime) can be then treated as a cache of all classes for that runtime,
 * eliminating the need to iterate over all class loaders (see getRuntimeClasses()).
 * @param jr
 * @param errOut
 * @return
 */
private void cacheRuntimeClasses() {
    classInstanceCounts = new HashMap<JavaRuntime, Map<JavaClass, ClassStatistics>>();
    long corruptClassCount = 0;
    Map<JavaClass, ClassStatistics> classesOfThisRuntime = new HashMap<JavaClass, ClassStatistics>();
    JavaRuntime runtime = ctx.getRuntime();
    classInstanceCounts.put(runtime, classesOfThisRuntime);
    Iterator itClassLoader = runtime.getJavaClassLoaders();
    while (itClassLoader.hasNext()) {
        JavaClassLoader jcl = (JavaClassLoader) itClassLoader.next();
        Iterator itClass = jcl.getDefinedClasses();
        while (itClass.hasNext()) {
            Object obj = itClass.next();
            if (obj instanceof JavaClass) {
                // check that a cast can be made to JavaClass
                classesOfThisRuntime.put((JavaClass) obj, new ClassStatistics());
            } else {
                corruptClassCount++;
            }
        }
    }
    if (corruptClassCount > 0) {
        out.print("Warning, found " + corruptClassCount + " corrupt classes during classloader walk\n");
    }
}

Example 32 with JavaClassLoader

use of com.ibm.dtfj.java.JavaClassLoader in project openj9 by eclipse.

the class InfoJitmCommand method showJITdMethods.

private void showJITdMethods() {
    JavaRuntime jr = ctx.getRuntime();
    Iterator itJavaClassLoader = jr.getJavaClassLoaders();
    while (itJavaClassLoader.hasNext()) {
        JavaClassLoader jcl = (JavaClassLoader) itJavaClassLoader.next();
        Iterator itJavaClass = jcl.getDefinedClasses();
        while (itJavaClass.hasNext()) {
            JavaClass jc = (JavaClass) itJavaClass.next();
            Iterator itJavaMethod = jc.getDeclaredMethods();
            String jcName;
            try {
                jcName = jc.getName();
            } catch (CorruptDataException e) {
                jcName = Exceptions.getCorruptDataExceptionString();
            }
            while (itJavaMethod.hasNext()) {
                JavaMethod jm = (JavaMethod) itJavaMethod.next();
                String name;
                String sig;
                try {
                    name = jm.getName();
                } catch (CorruptDataException e) {
                    name = Exceptions.getCorruptDataExceptionString();
                }
                try {
                    sig = jm.getSignature();
                } catch (CorruptDataException e) {
                    sig = Exceptions.getCorruptDataExceptionString();
                }
                if (jm.getCompiledSections().hasNext()) {
                    Iterator itImageSection = jm.getCompiledSections();
                    while (itImageSection.hasNext()) {
                        ImageSection is = (ImageSection) itImageSection.next();
                        long startAddr = is.getBaseAddress().getAddress();
                        long size = is.getSize();
                        long endAddr = startAddr + size;
                        out.print("\n\t" + "start=" + Utils.toHex(startAddr) + "  " + "end=" + Utils.toHex(endAddr) + "   " + jcName + "::" + name + sig);
                    }
                }
            }
        }
    }
    out.print("\n");
}