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

Example 61 with JavaObject

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

the class ClassOutput method printFields.

public static void printFields(JavaObject jo, JavaClass jc, JavaRuntime jr, PrintStream out) {
    boolean array;
    try {
        array = jo.isArray();
    } catch (CorruptDataException e) {
        out.print("\t   <cannot determine if above object is array (" + Exceptions.getCorruptDataExceptionString() + "); " + "we will assume it is not an array>\n");
        array = false;
    }
    if (array) {
        String componentType;
        int arraySize;
        try {
            componentType = jc.getComponentType().getName();
        } catch (CorruptDataException e) {
            out.print("\t   <cannot determine what type of array this is (" + Exceptions.getCorruptDataExceptionString() + ")>\n");
            return;
        }
        try {
            arraySize = jo.getArraySize();
        } catch (CorruptDataException e) {
            out.print("\t   <cannot determine the size of the array (" + Exceptions.getCorruptDataExceptionString() + ")>\n");
            return;
        }
        Object dst = null;
        if (componentType.equals("boolean")) {
            dst = new boolean[arraySize];
        } else if (componentType.equals("byte")) {
            dst = new byte[arraySize];
        } else if (componentType.equals("char")) {
            dst = new char[arraySize];
        } else if (componentType.equals("short")) {
            dst = new short[arraySize];
        } else if (componentType.equals("int")) {
            dst = new int[arraySize];
        } else if (componentType.equals("long")) {
            dst = new long[arraySize];
        } else if (componentType.equals("float")) {
            dst = new float[arraySize];
        } else if (componentType.equals("double")) {
            dst = new double[arraySize];
        } else {
            dst = new JavaObject[arraySize];
        }
        try {
            jo.arraycopy(0, dst, 0, arraySize);
        } catch (CorruptDataException e) {
            out.print("\t   <cannot copy data from the array (" + Exceptions.getCorruptDataExceptionString() + ")>\n");
            return;
        } catch (MemoryAccessException e) {
            out.print("\t   <cannot copy data from the array (" + Exceptions.getMemoryAccessExceptionString() + ")>\n");
            return;
        } catch (UnsupportedOperationException e) {
            // Some artefacts e.g. phd do not support arraycopy so just put out what we can
            out.print("\t    This is an array of size " + arraySize + " elements\n");
            return;
        }
        for (int i = 0; i < arraySize; i++) {
            out.print("\t   " + i + ":\t");
            if (componentType.equals("boolean")) {
                out.print(Utils.getVal(new Boolean(((boolean[]) dst)[i])));
            } else if (componentType.equals("byte")) {
                out.print(Utils.getVal(new Byte(((byte[]) dst)[i])));
            } else if (componentType.equals("char")) {
                out.print(Utils.getVal(new Character(((char[]) dst)[i])));
            } else if (componentType.equals("short")) {
                out.print(Utils.getVal(new Short(((short[]) dst)[i])));
            } else if (componentType.equals("int")) {
                out.print(Utils.getVal(new Integer(((int[]) dst)[i])));
            } else if (componentType.equals("long")) {
                out.print(Utils.getVal(new Long(((long[]) dst)[i])));
            } else if (componentType.equals("float")) {
                out.print(Utils.getVal(new Float(((float[]) dst)[i])));
            } else if (componentType.equals("double")) {
                out.print(Utils.getVal(new Double(((double[]) dst)[i])));
            } else {
                out.print(Utils.getVal(((JavaObject[]) dst)[i]));
            }
            out.print("\n");
        }
    } else {
        JavaClass initialJC = jc;
        List<JavaClass> classList = new ArrayList<JavaClass>();
        while (jc != null) {
            classList.add(jc);
            try {
                jc = jc.getSuperclass();
            } catch (CorruptDataException d) {
                jc = null;
            }
        }
        for (int i = (classList.size() - 1); i >= 0; i--) {
            jc = classList.get(i);
            Iterator itField = jc.getDeclaredFields();
            if (itField.hasNext()) {
                if (jc.equals(initialJC)) {
                    out.print("\t   declared fields:\n");
                } else {
                    out.print("\t   fields inherited from \"");
                    try {
                        out.print(jc.getName() + "\":\n");
                    } catch (CorruptDataException d) {
                        out.print(Exceptions.getCorruptDataExceptionString());
                    }
                }
            }
            while (itField.hasNext()) {
                JavaField jf = (JavaField) itField.next();
                boolean isStatic;
                try {
                    isStatic = Modifier.isStatic(jf.getModifiers());
                } catch (CorruptDataException e) {
                    out.print("\t   <error while getting modifier for field \"");
                    try {
                        out.print(jf.getName());
                    } catch (CorruptDataException d) {
                        out.print(Exceptions.getCorruptDataExceptionString());
                    }
                    out.print("\", " + Exceptions.getCorruptDataExceptionString() + ">");
                    isStatic = true;
                }
                if (!isStatic) {
                    printNonStaticFieldData(jo, jf, out);
                }
            }
        }
    }
    out.print("\n");
}

Example 62 with JavaObject

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

the class InfoHeapCommand method printOccupancyInfo.

private void printOccupancyInfo(JavaHeap theHeap, PrintStream out) {
    /*
		 * This method takes a lot of time and hence this information is only included 
		 * when using "info heap <heapname>". If this method was run for every heap 
		 * when using "info heap *" the amount of time it would take would be astronomical.
		 */
    long size = 0;
    long totalObjectSize = 0;
    // total number of objects on the heap
    long totalObjects = 0;
    // total number of corrupt objects
    long totalCorruptObjects = 0;
    Iterator itSections = theHeap.getSections();
    // object returned from various iterators
    Object obj = null;
    // corrupt data
    CorruptData cdata = null;
    while (itSections.hasNext()) {
        obj = itSections.next();
        if (obj instanceof CorruptData) {
            // returned section is corrupt
            cdata = (CorruptData) obj;
            out.print("\t\t Warning - corrupt image section found");
            if (cdata.getAddress() != null) {
                out.print(" at 0x" + cdata.getAddress().toString());
            }
            out.print("\n");
        } else {
            // returned section is valid, so process it
            ImageSection theSection = (ImageSection) obj;
            size = size + theSection.getSize();
        }
    }
    out.print("\t  Size of heap: " + size + " bytes\n");
    Iterator itObjects = theHeap.getObjects();
    try {
        while (itObjects.hasNext()) {
            obj = itObjects.next();
            totalObjects++;
            if (obj instanceof CorruptData) {
                totalCorruptObjects++;
                cdata = (CorruptData) obj;
                out.print("\t\t Warning - corrupt heap object found at position " + totalObjects);
                if (cdata.getAddress() != null) {
                    out.print(" address 0x" + cdata.getAddress().toString());
                }
                out.print("\n");
            } else {
                JavaObject theObject = (JavaObject) obj;
                totalObjectSize = totalObjectSize + theObject.getSize();
            }
        }
        float percentage = ((float) totalObjectSize / (float) size) * 10000;
        // Sending this float through an int gets it down to 2 decimal places.
        int trimmedPercent = ((int) percentage);
        percentage = ((float) trimmedPercent) / 100;
        out.print("\t  Occupancy               :   " + totalObjectSize + " bytes  (" + percentage + "%)\n");
        out.print("\t  Total objects           :   " + totalObjects + "\n");
        out.print("\t  Total corrupted objects :   " + totalCorruptObjects + "\n");
    } catch (CorruptDataException e) {
        out.print("\t  Occupancy :   <unknown>\n");
    }
}

Example 63 with JavaObject

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

the class WhatisCommand method isWithinObjectRange.

private boolean isWithinObjectRange(Iterator objects, long address) {
    long startAddress, endAddress;
    String className;
    while (objects.hasNext()) {
        JavaObject jObject = (JavaObject) objects.next();
        try {
            className = jObject.getJavaClass().getName();
            startAddress = jObject.getID().getAddress();
            endAddress = startAddress + jObject.getSize();
        } catch (CorruptDataException cde) {
            // TODO exception handling
            continue;
        }
        if (isWithinRange(startAddress, endAddress, address)) {
            out.print("\t\t0x" + Long.toHexString(address) + " is within an object on the heap:\n" + "\t\t\toffset " + (address - startAddress) + " within " + className + " instance @ 0x" + Long.toHexString(startAddress) + "\n");
            return true;
        }
    }
    return false;
}

Example 64 with JavaObject

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

the class JUCMonitorNode method getEnterWaiters.

public Iterator getEnterWaiters() {
    List waiters = new LinkedList();
    Iterator itThread = jr.getThreads();
    while (itThread.hasNext()) {
        Object o = itThread.next();
        try {
            if (!(o instanceof JavaThread)) {
                continue;
            }
            JavaThread jt = (JavaThread) o;
            if ((jt.getState() & JavaThread.STATE_PARKED) != 0) {
                JavaObject blocker = jt.getBlockingObject();
                if (blocker != null && blocker.equals(lock)) {
                    waiters.add(jt);
                }
            }
        } catch (CorruptDataException cde) {
        // out.println("\nwarning, corrupt data encountered during scan for java.util.concurrent locks...");
        } catch (DataUnavailable du) {
        // out.println("\nwarning, data unavailable encountered during scan for java.util.concurrent locks...");
        }
    }
    return waiters.iterator();
}

Example 65 with JavaObject

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

the class WhatisCommand method checkMethodInRange.

private void checkMethodInRange(Iterator objects, long address) {
    while (objects.hasNext()) {
        JavaObject jObject = (JavaObject) objects.next();
        JavaClass jClass;
        try {
            jClass = jObject.getJavaClass();
        } catch (CorruptDataException cde) {
            // go to the next iteration
            continue;
        }
        Iterator methods = jClass.getDeclaredMethods();
        while (methods.hasNext()) {
            JavaMethod jMethod = (JavaMethod) methods.next();
            Iterator bytecodeSections = jMethod.getBytecodeSections();
            Iterator compiledSections = jMethod.getCompiledSections();
            if (isWithinImageSections(bytecodeSections, jMethod, false, address)) {
                // found it, we are done
                return;
            }
            if (isWithinImageSections(compiledSections, jMethod, true, address)) {
                // found it, we are done
                return;
            }
        }
    }
}