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

Example 26 with JavaClass

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

the class JavaFieldTest method loadTestObjects.

protected void loadTestObjects(JavaRuntime ddrRuntime, List<Object> ddrObjects, JavaRuntime jextractRuntime, List<Object> jextractObjects) {
    List<Object> ddrClassLoaders = new ArrayList<Object>();
    List<Object> jextractClassLoaders = new ArrayList<Object>();
    fillLists(ddrClassLoaders, ddrRuntime.getJavaClassLoaders(), jextractClassLoaders, jextractRuntime.getJavaClassLoaders(), null);
    List<Object> ddrClasses = new ArrayList<Object>();
    List<Object> jextractClasses = new ArrayList<Object>();
    for (int i = 0; i < ddrClassLoaders.size(); i++) {
        JavaClassLoader ddrClassLoader = (JavaClassLoader) ddrClassLoaders.get(i);
        JavaClassLoader jextractClassLoader = (JavaClassLoader) jextractClassLoaders.get(i);
        fillLists(ddrClasses, ddrClassLoader.getDefinedClasses(), jextractClasses, jextractClassLoader.getDefinedClasses(), null);
    }
    for (int i = 0; i < ddrClasses.size(); i++) {
        JavaClass ddrClass = (JavaClass) ddrClasses.get(i);
        JavaClass jextractClass = (JavaClass) jextractClasses.get(i);
        fillLists(ddrObjects, ddrClass.getDeclaredFields(), jextractObjects, jextractClass.getDeclaredFields(), JavaClassTest.DECLARED_FIELDS_SORT_ORDER);
    }
}

Example 27 with JavaClass

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

the class JavaReferenceTest method loadTestObjects.

protected void loadTestObjects(JavaRuntime ddrRuntime, List<Object> ddrObjects, JavaRuntime jextractRuntime, List<Object> jextractObjects) {
    List<Object> ddrClassLoaders = new ArrayList<Object>();
    List<Object> jextractClassLoaders = new ArrayList<Object>();
    fillLists(ddrClassLoaders, ddrRuntime.getJavaClassLoaders(), jextractClassLoaders, jextractRuntime.getJavaClassLoaders(), null);
    List<Object> ddrClasses = new ArrayList<Object>();
    List<Object> jextractClasses = new ArrayList<Object>();
    for (int i = 0; i < ddrClassLoaders.size(); i++) {
        JavaClassLoader ddrClassLoader = (JavaClassLoader) ddrClassLoaders.get(i);
        JavaClassLoader jextractClassLoader = (JavaClassLoader) jextractClassLoaders.get(i);
        fillLists(ddrClasses, ddrClassLoader.getDefinedClasses(), jextractClasses, jextractClassLoader.getDefinedClasses(), null);
    }
    for (int i = 0; i < ddrClasses.size(); i++) {
        JavaClass ddrClass = (JavaClass) ddrClasses.get(i);
        JavaClass jextractClass = (JavaClass) jextractClasses.get(i);
        fillLists(ddrObjects, ddrClass.getReferences(), jextractObjects, jextractClass.getReferences(), JavaClassTest.REFERENCES_SORT_ORDER);
    }
}

Example 28 with JavaClass

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

the class JavaObject method getArraySize.

/* (non-Javadoc)
	 * @see com.ibm.dtfj.java.JavaObject#getArraySize()
	 */
public int getArraySize() throws CorruptDataException {
    JavaClass isa = getJavaClass();
    if (isa instanceof JavaArrayClass) {
        JavaArrayClass blueprint = (JavaArrayClass) isa;
        int offset = blueprint.getSizeOffset();
        int numberOfSizeBytes = blueprint.getNumberOfSizeBytes();
        try {
            int numberOfElements = 0;
            if (4 == numberOfSizeBytes) {
                // read an int
                numberOfElements = _basePointer.getIntAt(offset);
            } else if (8 == numberOfSizeBytes) {
                // read a long
                long longCount = _basePointer.getLongAt(offset);
                // the spec says to return an int here so we just truncate, for now
                numberOfElements = (int) longCount;
                if (((long) numberOfElements) != longCount) {
                    System.err.println("Error:  Array element count overflow or underflow.");
                }
            } else {
                // not sure what this is (this could be done generically but that would require exposing endian-conversion differently.  Besides, stopping this at a strange number is probably a good idea since it is more likely an error)
                System.err.println("Error:  unable to read array size as we weren't expecting to read " + numberOfSizeBytes + " bytes.");
            }
            return numberOfElements;
        } catch (MemoryAccessException e) {
            throw new CorruptDataException(new CorruptData("unable to read the number of elements", _basePointer.add(offset)));
        }
    } else {
        throw new IllegalArgumentException();
    }
}

Example 29 with JavaClass

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

the class JavaObject method getJavaClass.

/* (non-Javadoc)
	 * @see com.ibm.dtfj.java.JavaObject#getJavaClass()
	 */
public JavaClass getJavaClass() throws CorruptDataException {
    if (0 != _basePointer.getAddress()) {
        ImagePointer classPointer;
        if (_containingHeap == null)
            throw new CorruptDataException(new CorruptData("unable to access class pointer as containing heap is null", _basePointer));
        try {
            classPointer = _containingHeap.readClassPointerRelativeTo(_basePointer);
        } catch (MemoryAccessException e) {
            throw new CorruptDataException(new CorruptData("unable to access class pointer", _basePointer));
        }
        long classID = classPointer.getAddress();
        /* CMVC 167379: Lowest few bits of the class id are used as flags, and should be 
			 * masked with ~(J9_REQUIRED_CLASS_ALIGNMENT - 1) to find real class id. 
			 */
        long classAlignment = _containingHeap.getClassAlignment();
        long alignedClassID = classID;
        if (classAlignment > 0) {
            alignedClassID &= (~(classAlignment - 1L));
        }
        JavaClass ret = _javaVM.getClassForID(alignedClassID);
        if (ret == null) {
            throw new CorruptDataException(new CorruptData("Unknown class ID " + Long.toHexString(alignedClassID) + " for object " + Long.toHexString(_basePointer.getAddress()) + " (read class ID from " + Long.toHexString(classPointer.getAddress()) + ", in memory value was " + Long.toHexString(classID) + ")", _basePointer));
        }
        return ret;
    } else {
        throw new NullPointerException();
    }
}

Example 30 with JavaClass

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

the class JavaArrayClass method getName.

/* (non-Javadoc)
	 * @see com.ibm.dtfj.java.JavaClass#getName()
	 */
public String getName() throws CorruptDataException {
    String name = "";
    // Note that validation in JavaObject.arraycopy is dependent on type name constructed here
    for (int x = 0; x < _dimension; x++) {
        name += JavaObject.ARRAY_PREFIX_SIGNATURE;
    }
    JavaClass leafClass = getLeafClass();
    if (null == leafClass) {
        CorruptData data = new CorruptData("unable to retrieve leaf class", null);
        throw new CorruptDataException(data);
    }
    String elementClassName = leafClass.getName();
    if (elementClassName.equals("boolean")) {
        name += JavaObject.BOOLEAN_SIGNATURE;
    } else if (elementClassName.equals("byte")) {
        name += JavaObject.BYTE_SIGNATURE;
    } else if (elementClassName.equals("char")) {
        name += JavaObject.CHAR_SIGNATURE;
    } else if (elementClassName.equals("short")) {
        name += JavaObject.SHORT_SIGNATURE;
    } else if (elementClassName.equals("int")) {
        name += JavaObject.INTEGER_SIGNATURE;
    } else if (elementClassName.equals("long")) {
        name += JavaObject.LONG_SIGNATURE;
    } else if (elementClassName.equals("float")) {
        name += JavaObject.FLOAT_SIGNATURE;
    } else if (elementClassName.equals("double")) {
        name += JavaObject.DOUBLE_SIGNATURE;
    } else {
        // reference type
        name += JavaObject.OBJECT_PREFIX_SIGNATURE;
        name += elementClassName;
        name += ';';
    }
    return name;
}