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

Example 21 with JavaRuntime

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

the class InfoClassCommand method printAllRuntimeClasses.

private void printAllRuntimeClasses(Comparator<JavaClass> sortOrder) {
    JavaRuntime jr = ctx.getRuntime();
    Collection<JavaClass> javaClasses = getRuntimeClasses(jr);
    long objCount = 0;
    long totalSize = 0;
    Iterator<JavaClass> itClass;
    if (sortOrder == null) {
        itClass = javaClasses.iterator();
    } else {
        List<JavaClass> sortedList = new LinkedList<JavaClass>();
        Iterator<JavaClass> itr = javaClasses.iterator();
        while (itr.hasNext()) {
            sortedList.add(itr.next());
        }
        Collections.sort(sortedList, sortOrder);
        itClass = sortedList.iterator();
    }
    if (itClass.hasNext()) {
        printClassListHeader();
    } else {
        out.print("\n\t No information found for loaded classes\n");
    }
    while (itClass.hasNext()) {
        JavaClass jc = itClass.next();
        ClassStatistics d = getClassStatisticsFor(jr, jc);
        totalSize += d.getSize();
        objCount += d.getCount();
        printOneClass(jc, d);
    }
    out.print("\n");
    out.print("\t Total number of objects: " + objCount + "\n");
    out.print("\t Total size of objects: " + totalSize + "\n");
}

Example 22 with JavaRuntime

use of com.ibm.dtfj.java.JavaRuntime 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 23 with JavaRuntime

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

the class InfoClassCommand method printSingleRuntimeClassInfo.

private void printSingleRuntimeClassInfo(String className) {
    JavaRuntime jr = ctx.getRuntime();
    Long objAddress = Utils.longFromStringWithPrefix(className);
    JavaClass[] classes = null;
    if (objAddress != null) {
        JavaClass jc = Utils.getClassGivenAddress(objAddress.longValue(), jr);
        if (jc != null) {
            classes = new JavaClass[1];
            classes[0] = jc;
        }
    } else {
        classes = Utils.getClassGivenName(className, jr, out);
    }
    // still be an array type or it might not exist
    if (null == classes || classes.length == 0) {
        out.print("\t  could not find class with name \"" + className + "\"\n\n");
    } else if (classes.length == 1) {
        JavaClass jc = classes[0];
        printClassDetails(jr, className, jc);
    } else {
        out.println("name = " + className + " found " + classes.length + " on different class loaders");
        for (int i = 0; i < classes.length; i++) {
            JavaClass jc = classes[i];
            ClassOutput.printRuntimeClassAndLoader(jc, out);
        }
        out.println("Use info class with the class ID to print out information on a specific class.");
        out.println("For example: info class 0x" + Long.toHexString(classes[0].getID().getAddress()));
    }
}

Example 24 with JavaRuntime

use of com.ibm.dtfj.java.JavaRuntime 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");
}

Example 25 with JavaRuntime

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

the class InfoLockCommand method showSystemLocks.

private void showSystemLocks() {
    Vector vMonitorsWithLockedObjects = new Vector();
    JavaRuntime jRuntime = ctx.getRuntime();
    Iterator monitors = jRuntime.getMonitors();
    out.println("\nSystem locks...");
    while (monitors.hasNext()) {
        JavaMonitor jMonitor = (JavaMonitor) monitors.next();
        JavaObject jObject = jMonitor.getObject();
        try {
            String monitorName = jMonitor.getName().trim();
            if (monitorName.equalsIgnoreCase("")) {
                monitorName = "<un-named monitor>";
            }
            out.println("id: 0x" + jMonitor.getID() + " name: " + jMonitor.getName());
            JavaThread owner = jMonitor.getOwner();
            if (null != owner) {
                try {
                    out.println("\towner thread id: " + owner.getImageThread().getID() + " name: " + owner.getName());
                } catch (DataUnavailable e) {
                    out.println("\towner thread id: " + Exceptions.getDataUnavailableString());
                    logger.log(Level.FINE, Exceptions.getDataUnavailableString(), e);
                }
            }
            showWaiters(jMonitor);
        } catch (CorruptDataException cde) {
            out.println("\nwarning, corrupt data encountered during scan for system locks...");
        }
        if (null != jObject) {
            // Remember object monitors (flat or inflated) for later
            vMonitorsWithLockedObjects.add(jMonitor);
        }
    }
    showLockedObjects(vMonitorsWithLockedObjects);
}