Examples with U32 com.ibm.j9ddr.vm29.types.U32 used on opensource projects

Example 46 with U32

use of com.ibm.j9ddr.vm29.types.U32 in project openj9 by eclipse.

the class RomClassWalker method allSlotsInAnnotationDo.

int allSlotsInAnnotationDo(U32Pointer annotation, String annotationSectionName) throws CorruptDataException {
    int increment = 0;
    int annotationLength = annotation.at(0).intValue();
    /* determine how many U_32 sized chunks to increment initialValue by
		 * NOTE: annotation length is U_32 and does not include the length field itself
		 * annotations are padded to U_32 which is also not included in the length field*/
    int padding = U32.SIZEOF - (annotationLength % U32.SIZEOF);
    increment = annotationLength / U32.SIZEOF;
    if (U32.SIZEOF == padding) {
        padding = 0;
    }
    if (padding > 0) {
        increment++;
    }
    classWalkerCallback.addSlot(clazz, SlotType.J9_U32, annotation, "annotation length");
    int count = annotationLength;
    U8Pointer cursor = U8Pointer.cast(annotation.add(1));
    for (; count > 0; count--) {
        classWalkerCallback.addSlot(clazz, SlotType.J9_U8, cursor, "annotation data");
        cursor = cursor.add(1);
    }
    count = padding;
    for (; count > 0; count--) {
        classWalkerCallback.addSlot(clazz, SlotType.J9_U8, cursor, "annotation padding");
        cursor = cursor.add(1);
    }
    /* move past the annotation length */
    increment += 1;
    classWalkerCallback.addSection(clazz, annotation, increment * U32.SIZEOF, annotationSectionName, true);
    return increment;
}

Example 47 with U32

use of com.ibm.j9ddr.vm29.types.U32 in project openj9 by eclipse.

the class J9BCUtil method dumpMethodAnnotations.

private static void dumpMethodAnnotations(PrintStream out, J9ROMMethodPointer romMethod) throws CorruptDataException {
    U32Pointer methodAnnotationData = ROMHelp.getMethodAnnotationsDataFromROMMethod(romMethod);
    U32Pointer parametersAnnotationData = ROMHelp.getParameterAnnotationsDataFromROMMethod(romMethod);
    U32Pointer defaultAnnotationData = ROMHelp.getDefaultAnnotationDataFromROMMethod(romMethod);
    U32Pointer methodTypeAnnotations = ROMHelp.getMethodTypeAnnotationDataFromROMMethod(romMethod);
    U32Pointer codeTypeAnnotations = ROMHelp.getCodeTypeAnnotationDataFromROMMethod(romMethod);
    if ((!methodAnnotationData.isNull()) || (!parametersAnnotationData.isNull()) || (!defaultAnnotationData.isNull())) {
        J9ROMNameAndSignaturePointer nameAndSignature = romMethod.nameAndSignature();
        J9UTF8Pointer name = nameAndSignature.name();
        J9UTF8Pointer signature = nameAndSignature.signature();
        out.append("      Name: " + J9UTF8Helper.stringValue(name) + nl);
        out.append("      Signature: " + J9UTF8Helper.stringValue(signature) + nl);
    }
    if (!methodAnnotationData.isNull()) {
        U32 length = methodAnnotationData.at(0);
        U32Pointer data = methodAnnotationData.add(1);
        out.append(String.format("      Annotations (%d bytes): %s" + nl, length.intValue(), data.getHexAddress()));
    }
    if (!parametersAnnotationData.isNull()) {
        U32 length = parametersAnnotationData.at(0);
        U32Pointer data = parametersAnnotationData.add(1);
        out.append(String.format("      Parameters Annotations (%d bytes): %s" + nl, length.intValue(), data.getHexAddress()));
    }
    if (!defaultAnnotationData.isNull()) {
        U32 length = defaultAnnotationData.at(0);
        U32Pointer data = defaultAnnotationData.add(1);
        out.append(String.format("      Default Annotations (%d bytes): %s" + nl, length.intValue(), data.getHexAddress()));
    }
    if (!methodTypeAnnotations.isNull()) {
        U32 length = methodTypeAnnotations.at(0);
        U32Pointer data = methodTypeAnnotations.add(1);
        out.append(String.format("      Method Type Annotations (%d bytes): %s" + nl, length.intValue(), data.getHexAddress()));
    }
    if (!codeTypeAnnotations.isNull()) {
        U32 length = codeTypeAnnotations.at(0);
        U32Pointer data = codeTypeAnnotations.add(1);
        out.append(String.format("      Code Type Annotations (%d bytes): %s" + nl, length.intValue(), data.getHexAddress()));
    }
}

Example 48 with U32

use of com.ibm.j9ddr.vm29.types.U32 in project openj9 by eclipse.

the class J9ClassShapeCommand method run.

public void run(String command, String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    if (args.length != 1) {
        CommandUtils.dbgPrint(out, "Usage: !j9classshape <classAddress>\n");
        return;
    }
    try {
        J9JavaVMPointer vm = J9RASHelper.getVM(DataType.getJ9RASPointer());
        J9ClassPointer instanceClass = J9ClassPointer.NULL;
        String classSelector = args[0];
        if (classSelector.matches("\\p{Digit}.*")) {
            /* addresses start with a decimal digit, possibly the '0' in "0x" */
            instanceClass = J9ClassPointer.cast(CommandUtils.parsePointer(classSelector, J9BuildFlags.env_data64));
        } else {
            J9ClassPointer[] candidates = findClassByName(vm, classSelector);
            if (candidates.length == 0) {
                CommandUtils.dbgPrint(out, "No classes matching \"" + classSelector + "\" found\n");
                return;
            } else if (candidates.length > 1) {
                CommandUtils.dbgPrint(out, "Multiple classes matching \"" + classSelector + "\" found\n");
                return;
            } else {
                instanceClass = candidates[0];
                String javaName = J9ClassHelper.getJavaName(instanceClass);
                String hexString = instanceClass.getHexAddress();
                CommandUtils.dbgPrint(out, String.format("!j9class %1$s\n", hexString));
            }
        }
        J9ClassPointer previousSuperclass = J9ClassPointer.NULL;
        String className = J9ClassHelper.getName(instanceClass);
        J9VMThreadPointer mainThread = vm.mainThread();
        boolean lockwordPrinted = true;
        if (J9BuildFlags.thr_lockNursery) {
            lockwordPrinted = false;
        }
        CommandUtils.dbgPrint(out, "Instance fields in %s:\n", className);
        CommandUtils.dbgPrint(out, "\noffset     name\tsignature\t(declaring class)\n");
        if (mainThread.isNull()) {
            /* we cannot print the instance fields without this */
            return;
        }
        long depth = J9ClassHelper.classDepth(instanceClass).longValue();
        for (long superclassIndex = 0; superclassIndex <= depth; superclassIndex++) {
            J9ClassPointer superclass;
            if (superclassIndex == depth) {
                superclass = instanceClass;
            } else {
                superclass = J9ClassPointer.cast(instanceClass.superclasses().at(superclassIndex));
            }
            U32 flags = new U32(J9VM_FIELD_OFFSET_WALK_INCLUDE_INSTANCE | J9VM_FIELD_OFFSET_WALK_INCLUDE_HIDDEN);
            Iterator<J9ObjectFieldOffset> iterator = J9ObjectFieldOffsetIterator.J9ObjectFieldOffsetIteratorFor(superclass.romClass(), instanceClass, previousSuperclass, flags);
            while (iterator.hasNext()) {
                J9ObjectFieldOffset result = (J9ObjectFieldOffset) iterator.next();
                boolean printField = true;
                boolean isHiddenField = result.isHidden();
                if (J9BuildFlags.thr_lockNursery) {
                    boolean isLockword = (isHiddenField && (result.getOffsetOrAddress().add(J9Object.SIZEOF).eq(superclass.lockOffset())));
                    if (isLockword) {
                        /*
							 * Print the lockword field if it is indeed the
							 * lockword for this instanceClass and we haven't
							 * printed it yet.
							 */
                        printField = !lockwordPrinted && instanceClass.lockOffset().eq(superclass.lockOffset());
                        if (printField) {
                            lockwordPrinted = true;
                        }
                    }
                }
                if (printField) {
                    printShapeField(out, superclass, result.getField(), result.getOffsetOrAddress(), isHiddenField);
                }
            }
            previousSuperclass = superclass;
        }
        CommandUtils.dbgPrint(out, "\nTotal instance size: %d\n", instanceClass.totalInstanceSize().longValue());
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}

Example 49 with U32

use of com.ibm.j9ddr.vm29.types.U32 in project openj9 by eclipse.

the class CheckEngine method checkClassStatics.

private int checkClassStatics(J9ClassPointer clazz) {
    int result = J9MODRON_GCCHK_RC_OK;
    try {
        boolean validationRequired = true;
        if (J9ClassHelper.isSwappedOut(clazz)) {
            /* if class has been hot swapped (J9AccClassHotSwappedOut bit is set) in Fast HCR,
				 * the ramStatics of the existing class may be reused.  The J9ClassReusedStatics
				 * bit in J9Class->extendedClassFlags will be set if that's the case.
				 * In Extended HCR mode ramStatics might be not NULL and must be valid
				 * NOTE: If class is hot swapped and the value in ramStatics is NULL it is valid 
				 * to have the correspondent ROM Class value in objectStaticCount field greater then 0
				 */
            if (J9ClassHelper.isArrayClass(clazz)) {
                /* j9arrayclass should not be hot swapped */
                result = J9MODRON_GCCHK_RC_CLASS_HOT_SWAPPED_FOR_ARRAY;
                CheckError error = new CheckError(clazz, _cycle, _currentCheck, "Class ", result, _cycle.nextErrorCount());
                _reporter.report(error);
                return result;
            }
            if (J9ClassHelper.areExtensionsEnabled()) {
                /* This is Extended HSR mode so hot swapped class might have NULL in ramStatics field */
                if (clazz.ramStatics().isNull()) {
                    validationRequired = false;
                }
            }
            try {
                /* This case can also occur when running -Xint with extensions enabled */
                if (J9ClassHelper.extendedClassFlags(clazz).allBitsIn(J9JavaClassFlags.J9ClassReusedStatics)) {
                    validationRequired = false;
                }
            } catch (NoSuchFieldError e) {
            /* Flag must be missing from the core. */
            }
        }
        if (validationRequired) {
            // J9ClassLoaderPointer classLoader = clazz.classLoader();
            J9ROMClassPointer romClazz = clazz.romClass();
            UDATA numberOfReferences = new UDATA(0);
            PointerPointer sectionStart = PointerPointer.NULL;
            PointerPointer sectionEnd = PointerPointer.NULL;
            /*
				 * Note: we have no special recognition for J9ArrayClass here
				 * J9ArrayClass does not have a ramStatics field but something else at this place
				 * so direct check (NULL != clazz->ramStatics) would not be correct,
				 * however romClazz->objectStaticCount must be 0 for this case
				 */
            if (!romClazz.objectStaticCount().eq(0)) {
                sectionStart = PointerPointer.cast(clazz.ramStatics());
                sectionEnd = sectionStart.add(romClazz.objectStaticCount());
            }
            /* Iterate all fields of ROM Class looking to statics fields pointed to java objects */
            Iterator<J9ObjectFieldOffset> objectFieldOffsetIterator = J9ObjectFieldOffsetIterator.J9ObjectFieldOffsetIteratorFor(clazz, J9ClassHelper.superclass(clazz), new U32(J9VM_FIELD_OFFSET_WALK_INCLUDE_STATIC | J9VM_FIELD_OFFSET_WALK_ONLY_OBJECT_SLOTS));
            while (objectFieldOffsetIterator.hasNext()) {
                J9ObjectFieldOffset fieldOffset = objectFieldOffsetIterator.next();
                // J9ROMFieldShapePointer field = fieldOffset.getField();
                numberOfReferences = numberOfReferences.add(1);
                /* get address of next field */
                PointerPointer address = sectionStart.addOffset(fieldOffset.getOffsetOrAddress());
                /* an address must be in gc scan range */
                if (!(address.gte(sectionStart) && address.lt(sectionEnd))) {
                    result = J9MODRON_GCCHK_RC_CLASS_STATICS_REFERENCE_IS_NOT_IN_SCANNING_RANGE;
                    CheckError error = new CheckError(clazz, address, _cycle, _currentCheck, "Class ", result, _cycle.nextErrorCount());
                    _reporter.report(error);
                }
            /* check only if we have an object */
            // TODO kmt : can't easily implement this part of the check
            // J9Class* classToCast = vm->internalVMFunctions->internalFindClassUTF8(currentThread, toSearchString, toSearchLength, classLoader, J9_FINDCLASS_FLAG_EXISTING_ONLY);
            // if ((NULL == classToCast) || (0 == instanceOfOrCheckCast(J9GC_J9OBJECT_CLAZZ(*address), classToCast))) {
            // The issue is that we can't simply call "internalFindClassUTF8" in DDR.
            // We could guess at the behaviour of the ClassLoader, but that makes
            // distingushing a real problem from a weird ClassLoader delegation
            // model difficult.
            }
            if (!numberOfReferences.eq(romClazz.objectStaticCount())) {
                result = J9MODRON_GCCHK_RC_CLASS_STATICS_WRONG_NUMBER_OF_REFERENCES;
                CheckError error = new CheckError(clazz, _cycle, _currentCheck, "Class ", result, _cycle.nextErrorCount());
                _reporter.report(error);
            }
        }
    } catch (CorruptDataException e) {
        // TODO : cde should be part of the error
        CheckError error = new CheckError(clazz, _cycle, _currentCheck, "Class ", J9MODRON_GCCHK_RC_CORRUPT_DATA_EXCEPTION, _cycle.nextErrorCount());
        _reporter.report(error);
    }
    return result;
}

Example 50 with U32

use of com.ibm.j9ddr.vm29.types.U32 in project openj9 by eclipse.

the class CheckReporterTTY method reportObjectHeader.

@Override
public void reportObjectHeader(CheckError error, J9ObjectPointer object, String prefix) {
    String prefixString = prefix == null ? "" : prefix;
    if (!shouldReport(error)) {
        return;
    }
    boolean isValid = false;
    boolean isHole = false;
    boolean isIndexable = false;
    try {
        isHole = ObjectModel.isDeadObject(object);
        if (!isHole) {
            isIndexable = ObjectModel.isIndexable(object);
        }
        isValid = true;
    } catch (CorruptDataException cde) {
    }
    if (isValid) {
        if (isIndexable) {
            out.print(String.format("  <gc check (%d): %sIObject %x header:", error._errorNumber, prefixString, object.getAddress()));
        } else {
            String elementName = isHole ? "Hole" : "Object";
            out.print(String.format("  <gc check (%d): %s%s %x header:", error._errorNumber, prefixString, elementName, object.getAddress()));
        }
    } else {
        out.print(String.format("  <gc check (%d): %s%s %x header:", error._errorNumber, prefixString, "Corrupt", object.getAddress()));
    }
    int headerSize = (int) J9Object.SIZEOF;
    if (isHole) {
        headerSize = (int) MM_HeapLinkedFreeHeader.SIZEOF;
    } else {
        try {
            headerSize = ObjectModel.getHeaderSize(object).intValue();
        } catch (CorruptDataException cde) {
        }
    }
    try {
        U32Pointer data = U32Pointer.cast(object);
        for (int i = 0; i < headerSize / U32.SIZEOF; i++) {
            out.print(String.format(" %08X", data.at(i).longValue()));
        }
    } catch (CorruptDataException cde) {
    }
    out.println(">");
}