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

Example 46 with JavaClass

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

the class JavaClassLoader method getCachedClasses.

/* (non-Javadoc)
	 * @see com.ibm.dtfj.java.JavaClassLoader#getCachedClasses()
	 */
public Iterator getCachedClasses() {
    if (null == _cached) {
        // a cached class is any class known to the loader
        Iterator ids = _classIDs.iterator();
        _cached = new ArrayList();
        while (ids.hasNext()) {
            long oneID = ((Long) ids.next()).longValue();
            JavaClass oneClass = _javaVM.getClassForID(oneID);
            if (null == oneClass) {
                _cached.add(new CorruptData("Cache reference to unknown class " + oneID, null));
            } else {
                _cached.add(oneClass);
            }
        }
    }
    return _cached.iterator();
}

Example 47 with JavaClass

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

the class JavaClassLoader method findClass.

/* (non-Javadoc)
	 * @see com.ibm.dtfj.java.JavaClassLoader#findClass(java.lang.String)
	 */
public JavaClass findClass(String name) throws CorruptDataException {
    Iterator classes = getDefinedClasses();
    JavaClass found = null;
    while (classes.hasNext() && (null == found)) {
        JavaClass one = (JavaClass) classes.next();
        if (one.getName().equals(name)) {
            found = one;
        }
    }
    return found;
}

Example 48 with JavaClass

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

the class JCJavaClassLoader method findClass.

/**
 */
public JavaClass findClass(String className) {
    JavaClass foundClass = null;
    if (fClassNames.containsKey(className)) {
        ImagePointer ip = (ImagePointer) fClassNames.get(className);
        if (ip != null) {
            // By class ID
            long id = ip.getAddress();
            foundClass = fRuntime.findJavaClass(id);
        } else {
            // By class name
            foundClass = fRuntime.findJavaClass(className);
        }
    }
    return foundClass;
}

Example 49 with JavaClass

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

the class PHDJavaClass method getReferences.

public Iterator<JavaReference> getReferences() {
    final JavaClass source = this;
    return new Iterator<JavaReference>() {

        int count;

        JavaClass sup;

        JavaObject load;

        {
            try {
                sup = getSuperclass();
                if (sup != null)
                    count = -1;
            } catch (CorruptDataException e) {
            }
            try {
                load = loader.getObject();
                if (load != null)
                    count = -2;
            } catch (CorruptDataException e) {
            }
        }

        public boolean hasNext() {
            if (count < 0) {
                return true;
            } else if (refs instanceof LongEnumeration) {
                LongEnumeration le = (LongEnumeration) refs;
                return le.hasMoreElements();
            } else if (refs instanceof long[]) {
                long[] arefs = (long[]) refs;
                return count < arefs.length;
            } else if (refs instanceof int[]) {
                int[] arefs = (int[]) refs;
                return count < arefs.length;
            } else {
                return false;
            }
        }

        public JavaReference next() {
            if (!hasNext())
                throw new NoSuchElementException("" + count++);
            long ref;
            int refType = PHDJavaReference.REFERENCE_UNKNOWN;
            Object cls = null;
            if (count == -2) {
                cls = load;
                ++count;
                // Skip over the superclass if not present
                if (sup == null)
                    ++count;
                ref = 0;
                refType = PHDJavaReference.REFERENCE_CLASS_LOADER;
            } else if (count == -1) {
                cls = sup;
                ++count;
                ref = 0;
                refType = PHDJavaReference.REFERENCE_SUPERCLASS;
            } else {
                if (refs instanceof LongEnumeration) {
                    LongEnumeration le = (LongEnumeration) refs;
                    ref = le.nextLong();
                    ++count;
                } else if (refs instanceof int[]) {
                    int[] arefs = (int[]) refs;
                    ref = runtime.expandAddress(arefs[count++]);
                } else {
                    long[] arefs = (long[]) refs;
                    ref = arefs[count++];
                }
                cls = runtime.findClass(ref);
            }
            if (cls != null) {
                return new PHDJavaReference(cls, source, PHDJavaReference.REACHABILITY_STRONG, refType, PHDJavaReference.HEAP_ROOT_UNKNOWN, "?");
            } else {
                return new PHDJavaReference(new PHDJavaObject.Builder((PHDJavaHeap) (runtime.getHeaps().next()), ref, null, PHDJavaObject.NO_HASHCODE, -1).build(), source, PHDJavaReference.REACHABILITY_STRONG, refType, PHDJavaReference.HEAP_ROOT_UNKNOWN, "?");
            }
        }

        public void remove() {
            throw new UnsupportedOperationException();
        }
    };
}

Example 50 with JavaClass

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

the class PHDJavaClass method getObject.

public JavaObject getObject() throws CorruptDataException {
    if (addr == 0)
        return null;
    if (classObject != null)
        return classObject;
    JavaClass jlc = runtime.findClass("java/lang/Class");
    // Early in initialization the runtime might not know about classes
    if (jlc == null)
        jlc = loader.findClass("java/lang/Class");
    // If the object isn't in the heap at this address then we can't get refs for the object
    // Here we presume there won't be any extra references, then in PHDJavaRuntime we look for a real object on the heap.
    classObject = new PHDJavaObject.Builder((PHDJavaHeap) (runtime.getHeaps().next()), addr, jlc, flags, hashCode).refsAsArray(new long[0], 0).length(PHDJavaObject.SIMPLE_OBJECT).build();
    return classObject;
}