Examples with J9ClassPointer com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer used on opensource projects

Example 21 with J9ClassPointer

use of com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer in project openj9 by eclipse.

the class J9StaticsCommand method run.

public void run(String command, String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    try {
        if (args.length != 1) {
            CommandUtils.dbgPrint(out, "Usage: !j9statics <classAddress>\n");
            return;
        }
        long address = CommandUtils.parsePointer(args[0], J9BuildFlags.env_data64);
        J9ClassPointer ramClass = J9ClassPointer.cast(address);
        J9ROMClassPointer romClass = ramClass.romClass();
        J9UTF8Pointer className = romClass.className();
        CommandUtils.dbgPrint(out, "Static fields in %s:\n", J9UTF8Helper.stringValue(className));
        Iterator<J9ObjectFieldOffset> ofoIterator = J9ObjectFieldOffsetIterator.J9ObjectFieldOffsetIteratorFor(ramClass, J9ClassHelper.superclass(ramClass), new U32(J9ROMFieldOffsetWalkState.J9VM_FIELD_OFFSET_WALK_INCLUDE_STATIC));
        while (ofoIterator.hasNext()) {
            J9ObjectFieldOffset fieldOffset = ofoIterator.next();
            J9ROMFieldShapePointer field = fieldOffset.getField();
            String name = J9ROMFieldShapeHelper.getName(field);
            String sig = J9ROMFieldShapeHelper.getSignature(field);
            UDATAPointer fieldAddress = ramClass.ramStatics().addOffset(fieldOffset.getOffsetOrAddress());
            switch(sig.charAt(0)) {
                case 'L':
                case '[':
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticstringfieldshape %s) = !j9object %s\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), fieldAddress.at(0).getHexValue());
                    break;
                case 'D':
                    DoublePointer doublePointer = DoublePointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticdoublefieldshape %s) = %s (%s)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), doublePointer.getHexValue(), new Double(doublePointer.doubleAt(0)).toString());
                    break;
                case 'F':
                    FloatPointer floatPointer = FloatPointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s (%s)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), floatPointer.getHexValue(), new Float(floatPointer.floatAt(0)).toString());
                    break;
                case 'J':
                    I64Pointer longPointer = I64Pointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticdoublefieldshape %s) = %s (%d)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), longPointer.getHexValue(), longPointer.at(0).longValue());
                    break;
                case 'I':
                    I32Pointer intPointer = I32Pointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s (%d)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), intPointer.getHexValue(), intPointer.at(0).intValue());
                    break;
                case 'B':
                    I8Pointer bytePointer = I8Pointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s (%s)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), bytePointer.getHexValue(), bytePointer.at(0).byteValue());
                    break;
                case 'S':
                    I16Pointer shortPointer = I16Pointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s (%d)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), shortPointer.getHexValue(), shortPointer.at(0).shortValue());
                    break;
                case 'Z':
                    BoolPointer booleanPointer = BoolPointer.cast(fieldAddress);
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s (%s)\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), booleanPointer.getHexValue(), booleanPointer.boolAt(0) ? "true" : "false");
                    break;
                default:
                    CommandUtils.dbgPrint(out, "\t%s %s %s (!j9romstaticsinglefieldshape %s) = %s\n", fieldAddress.getHexAddress(), name, sig, field.getHexAddress(), fieldAddress.at(0).getHexValue());
                    break;
            }
        }
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}

Example 22 with J9ClassPointer

use of com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer in project openj9 by eclipse.

the class J9VTablesCommand method run.

public void run(String command, String[] args, Context context, final PrintStream out) throws DDRInteractiveCommandException {
    try {
        final J9JavaVMPointer vm = J9RASHelper.getVM(DataType.getJ9RASPointer());
        J9ClassPointer ramClass;
        UDATA vTableSlotCount;
        // UDATA  jitVTableSlotCount;
        UDATAPointer jitVTable = UDATAPointer.NULL;
        UDATAPointer vTable;
        long address = CommandUtils.parsePointer(args[0], J9BuildFlags.env_data64);
        ramClass = J9ClassPointer.cast(address);
        vTable = J9ClassHelper.vTable(ramClass);
        vTableSlotCount = vTable.at(0);
        if (J9BuildFlags.interp_nativeSupport) {
            if (!vm.jitConfig().isNull()) {
                jitVTable = UDATAPointer.cast(U8Pointer.cast(ramClass).sub((vTableSlotCount.longValue() + 1) * UDATA.SIZEOF));
            // jitVTableSlotCount = vTableSlotCount.sub(1);
            }
        }
        CommandUtils.dbgPrint(out, String.format("VTable for j9class %s  (size=%d - 1 for skipped resolve method)\n", ramClass.getHexAddress(), vTableSlotCount.longValue()));
        CommandUtils.dbgPrint(out, String.format("\tInterpreted%s\n", (!jitVTable.isNull()) ? "\t\tJitted\n" : ""));
        /*	First entry in vtable is the vtable count.
			 * 	Second entry is the magic method reference.
			 *  Skip both and start from the third element in vTable which is the first virtual method reference.
			 **/
        for (long i = 2; i < vTableSlotCount.longValue() + 1; i++) {
            String name = J9MethodHelper.getName(J9MethodPointer.cast(vTable.at(i)));
            String intAddr = U8Pointer.cast(vTable.at(i)).getHexAddress();
            if (!jitVTable.isNull()) {
                String jitAddr = U8Pointer.cast(jitVTable.at(vTableSlotCount.sub(i))).getHexAddress();
                CommandUtils.dbgPrint(out, String.format(" %d\t!j9method %s\t%s\t%s\n", i - 1, intAddr, jitAddr, name));
            } else {
                CommandUtils.dbgPrint(out, String.format(" %d\t!j9method %s\t%s\t\n", i - 1, intAddr, name));
            }
        }
        return;
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}

Example 23 with J9ClassPointer

use of com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer in project openj9 by eclipse.

the class J9ClassShapeCommand method findClassByName.

public static J9ClassPointer[] findClassByName(J9JavaVMPointer vm, String searchClassName) throws DDRInteractiveCommandException {
    ArrayList<J9ClassPointer> result = new ArrayList<J9ClassPointer>();
    try {
        PatternString pattern = new PatternString(searchClassName);
        ClassSegmentIterator classSegmentIterator = new ClassSegmentIterator(vm.classMemorySegments());
        while (classSegmentIterator.hasNext()) {
            J9ClassPointer classPointer = (J9ClassPointer) classSegmentIterator.next();
            String javaName = J9ClassHelper.getJavaName(classPointer);
            if (pattern.isMatch(javaName)) {
                result.add(classPointer);
            }
        }
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
    return result.toArray(new J9ClassPointer[result.size()]);
}

Example 24 with J9ClassPointer

use of com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer in project openj9 by eclipse.

the class MethodForNameCommand method dbgGetMethodsForName.

int dbgGetMethodsForName(PrintStream out, String pattern) throws CorruptDataException {
    int matchCount = 0;
    // J9ClassWalkState walkState;
    String classNeedle, methodNeedle, sigNeedle;
    long classMatchFlags, methodMatchFlags, sigMatchFlags;
    String classStart, nameStart, sigStart;
    if (pattern.indexOf('.') != -1) {
        // skip the .
        nameStart = pattern.substring(pattern.indexOf('.') + 1);
        classStart = pattern.substring(0, pattern.indexOf('.'));
    } else {
        classStart = "*";
        nameStart = pattern;
    }
    if (pattern.indexOf('(') != -1) {
        sigStart = pattern.substring(pattern.indexOf('('));
    } else {
        sigStart = "*";
    }
    StringBuffer needleBuffer = new StringBuffer();
    classMatchFlags = WildCard.parseWildcard(classStart, needleBuffer);
    classNeedle = needleBuffer.toString();
    if (classMatchFlags == -1) {
        CommandUtils.dbgError(out, "Invalid wildcards in class name\n");
        return 0;
    }
    needleBuffer = new StringBuffer();
    methodMatchFlags = WildCard.parseWildcard(nameStart, needleBuffer);
    methodNeedle = needleBuffer.toString();
    if (methodMatchFlags == -1) {
        CommandUtils.dbgError(out, "Invalid wildcards in method name\n");
        return 0;
    }
    needleBuffer = new StringBuffer();
    sigMatchFlags = WildCard.parseWildcard(sigStart, needleBuffer);
    sigNeedle = needleBuffer.toString();
    if (methodMatchFlags == -1) {
        CommandUtils.dbgError(out, "Invalid wildcards in method name\n");
        return 0;
    }
    Hashtable<String, J9ClassPointer> loadedClasses = new Hashtable<String, J9ClassPointer>();
    GCClassLoaderIterator classLoaderIterator = GCClassLoaderIterator.from();
    while (classLoaderIterator.hasNext()) {
        J9ClassLoaderPointer loader = classLoaderIterator.next();
        Iterator<J9ClassPointer> classItterator = ClassIterator.fromJ9Classloader(loader);
        while (classItterator.hasNext()) {
            J9ClassPointer clazz = classItterator.next();
            J9ROMClassPointer romClazz = clazz.romClass();
            String className = J9UTF8Helper.stringValue(romClazz.className());
            if (loadedClasses.containsValue(clazz)) {
                continue;
            } else {
                loadedClasses.put(clazz.toString(), clazz);
            }
            if (WildCard.wildcardMatch(classMatchFlags, classNeedle, className)) {
                J9MethodPointer methodCursor = clazz.ramMethods();
                for (long count = romClazz.romMethodCount().longValue(); count > 0; count--, methodCursor = methodCursor.add(1)) {
                    J9ROMMethodPointer romMethod = J9MethodHelper.romMethod(methodCursor);
                    J9ROMNameAndSignaturePointer nameAndSignature = romMethod.nameAndSignature();
                    String nameUTF = J9UTF8Helper.stringValue(nameAndSignature.name());
                    if (WildCard.wildcardMatch(methodMatchFlags, methodNeedle, nameUTF)) {
                        String sigUTF = J9UTF8Helper.stringValue(nameAndSignature.signature());
                        if (WildCard.wildcardMatch(sigMatchFlags, sigNeedle, sigUTF)) {
                            matchCount++;
                            CommandUtils.dbgPrint(out, String.format("!j9method %s --> %s.%s%s\n", methodCursor.getHexAddress(), className, nameUTF, sigUTF));
                        }
                    }
                }
            }
        }
    }
    return matchCount;
}

Example 25 with J9ClassPointer

use of com.ibm.j9ddr.vm29.pointer.generated.J9ClassPointer in project openj9 by eclipse.

the class ObjectSizeInfo method scanObjects.

private void scanObjects(GCHeapRegionDescriptor region) throws CorruptDataException {
    GCObjectHeapIterator heapIterator = GCObjectHeapIterator.fromHeapRegionDescriptor(region, true, true);
    while (heapIterator.hasNext()) {
        J9ObjectPointer object = heapIterator.next();
        J9ClassPointer objClass = J9ObjectHelper.clazz(object);
        if (!objClass.isNull() && (!J9ClassHelper.isArrayClass(objClass) || includeArrays)) {
            String objClassString = J9ClassHelper.getJavaName(objClass);
            if ((null == className) || className.equals(objClassString)) {
                ClassFieldInfo cfInfo = fieldStats.get(objClassString);
                if (null == cfInfo) {
                    cfInfo = new ClassFieldInfo(objClass);
                    fieldStats.put(objClassString, cfInfo);
                }
                cfInfo.addInstance(object);
            }
        }
    }
}