use of com.ibm.dtfj.java.JavaObject in project openj9 by eclipse.
the class DTFJJavaObject method addFieldReferences.
private void addFieldReferences(JavaClass jClass, int referentReachabilityType) throws CorruptDataException, MemoryAccessException {
Iterator<?> fieldIt = jClass.getDeclaredFields();
while (fieldIt.hasNext()) {
Object fieldObj = fieldIt.next();
if (fieldObj instanceof JavaField) {
JavaField thisField = (JavaField) fieldObj;
if ((thisField.getModifiers() & Modifier.STATIC) == 0) {
String signature = thisField.getSignature();
// From a reference point of view, only objects are interesting
if (signature.startsWith("L") || signature.startsWith("[")) {
Object targetObj = thisField.get(this);
if (targetObj == null) {
continue;
}
if (targetObj instanceof JavaObject) {
String fieldName = thisField.getName();
String declaringClassName = null;
try {
declaringClassName = thisField.getDeclaringClass().getName();
} catch (DataUnavailable e) {
// declaringClassName will be null, we will add this as a strong ref.
}
String description = "Object Reference [field name:" + fieldName + "]";
// (Not any referent field declared in subclasses.)
if (fieldName.equals("referent") && "java/lang/ref/Reference".equals(declaringClassName)) {
references.add(new DTFJJavaReference(this, targetObj, description, JavaReference.REFERENCE_FIELD, JavaReference.HEAP_ROOT_UNKNOWN, referentReachabilityType));
} else {
references.add(new DTFJJavaReference(this, targetObj, description, JavaReference.REFERENCE_FIELD, JavaReference.HEAP_ROOT_UNKNOWN, JavaReference.REACHABILITY_STRONG));
}
} else if (targetObj instanceof CorruptData) {
references.add(targetObj);
} else {
references.add(J9DDRDTFJUtils.newCorruptData(DTFJContext.getProcess(), "Unexpected type from field get: " + targetObj + ", class=" + targetObj.getClass().getName()));
}
}
}
} else if (fieldObj instanceof CorruptData) {
references.add(fieldObj);
} else {
references.add(J9DDRDTFJUtils.newCorruptData(DTFJContext.getProcess(), "Unexpected type from field iteration: " + fieldObj + ", class=" + fieldObj.getClass().getName()));
}
}
}
use of com.ibm.dtfj.java.JavaObject in project openj9 by eclipse.
the class JavaRuntimeTest method getHeapRootsTest.
@SuppressWarnings("unchecked")
@Test
public void getHeapRootsTest() {
boolean result = true;
String version = ((J9DDRImageProcess) ddrProcess).getVersion();
IteratorFilter ddrFilter = null;
if (version.equals("26")) {
ddrFilter = new IteratorFilter() {
// vm26 has a StringTable Cache that the root scanner scans but jextract(HeapIteratorAPI) does not
public boolean accept(Object obj) {
JavaReference ref = (JavaReference) obj;
if (ref.getDescription().equals("StringCacheTable")) {
return false;
}
return true;
}
};
}
if (version.equals("23")) {
ddrFilter = new IteratorFilter() {
boolean foundFirstContrivedThread = false;
public boolean accept(Object obj) {
try {
JavaReference ref = (JavaReference) obj;
Object ddrHeapRoot = ref.getTarget();
if (ref.getRootType() == JavaReference.HEAP_ROOT_THREAD) {
if (ddrHeapRoot instanceof JavaObject) {
JavaObject javaObject = (JavaObject) ddrHeapRoot;
String name = javaObject.getJavaClass().getName();
if (name.endsWith("Error") || name.endsWith("Exception") || name.equals("com/ibm/dtfj/tck/tests/javaruntime/TestJavaMonitor_ObjectMonitors$MonitorClass") || name.equals("com/ibm/dtfj/tck/harness/Configure$DumpThread")) {
// Ignore these since JExtract can't find them.
return false;
}
if (name.equals("com/ibm/dtfj/tck/tests/javaruntime/TestJavaThread_getStackFrames$ContrivedThread")) {
if (foundFirstContrivedThread) {
return false;
} else {
foundFirstContrivedThread = true;
}
}
}
}
return true;
} catch (DataUnavailable e) {
fail("bail");
return false;
} catch (CorruptDataException e) {
fail("bail");
return false;
}
}
};
}
for (int i = 0; i < ddrTestObjects.size(); i++) {
JavaRuntime localDDRRuntime = (JavaRuntime) ddrTestObjects.get(i);
JavaRuntime localJextractRuntime = (JavaRuntime) jextractTestObjects.get(i);
Object[] ddrHeapRootsArray = null;
Object[] jextractHeapRootsArray = null;
int threadCount = 0;
Iterator titer = localDDRRuntime.getThreads();
while (titer.hasNext()) {
threadCount++;
titer.next();
}
System.out.println("Thread count: " + threadCount);
try {
ddrHeapRootsArray = DTFJComparator.getList(Object.class, localDDRRuntime.getHeapRoots(), ddrFilter).toArray();
jextractHeapRootsArray = DTFJComparator.getList(Object.class, localJextractRuntime.getHeapRoots(), null).toArray();
} catch (InvalidObjectException e1) {
fail("Test setup failure");
}
Map<Long, List<Object>> map = new HashMap<Long, List<Object>>();
for (int j = 0; j < ddrHeapRootsArray.length; j++) {
long key = 0;
JavaReference ref = (JavaReference) ddrHeapRootsArray[j];
Object ddrHeapRoot = null;
try {
ddrHeapRoot = ref.getTarget();
} catch (DataUnavailable e) {
fail("bail");
} catch (CorruptDataException e) {
fail("bail");
}
if (ddrHeapRoot instanceof JavaObject) {
key = ((JavaObject) ddrHeapRoot).getID().getAddress();
} else if (ddrHeapRoot instanceof JavaClass) {
key = ((JavaClass) ddrHeapRoot).getID().getAddress();
} else {
fail("bail");
}
List bucket = map.get(key);
if (bucket == null) {
bucket = new ArrayList<Object>();
map.put(key, bucket);
}
bucket.add(ddrHeapRoot);
}
for (int j = 0; j < jextractHeapRootsArray.length; j++) {
JavaReference ref = (JavaReference) jextractHeapRootsArray[j];
Object heapRoot = null;
String name = null;
long key = 0;
try {
heapRoot = ref.getTarget();
if (heapRoot instanceof JavaObject) {
key = ((JavaObject) heapRoot).getID().getAddress();
name = "Instance of " + ((JavaObject) heapRoot).getJavaClass().getName();
} else if (heapRoot instanceof JavaClass) {
key = ((JavaClass) heapRoot).getID().getAddress();
name = ((JavaClass) heapRoot).getName();
} else {
fail("bail");
}
} catch (DataUnavailable e) {
fail("bail");
} catch (CorruptDataException e) {
fail("bail");
}
List bucket = map.get(key);
if (bucket == null) {
System.out.println(String.format("Jextract found %s at address: %s. Element #: %s that ddr does not know about", name, Long.toHexString(key), j));
result = false;
continue;
}
if (bucket.isEmpty()) {
fail("bail");
}
bucket.remove(0);
if (bucket.isEmpty()) {
map.remove(key);
}
}
// Whats left.
int count = 0;
Collection<List<Object>> remains = map.values();
if (remains.size() > 0) {
System.out.println("");
System.out.println("DDR found the following that JExtract did not know about");
}
Iterator<List<Object>> bucketIter = remains.iterator();
while (bucketIter.hasNext()) {
List<Object> bucket = bucketIter.next();
Iterator<Object> contentsIter = bucket.iterator();
while (contentsIter.hasNext()) {
Object obj = contentsIter.next();
System.out.println(String.format("%s) %s", ++count, obj));
}
}
}
assertTrue(result);
}
use of com.ibm.dtfj.java.JavaObject in project openj9 by eclipse.
the class JavaObjectTest method fillObjectList.
/**
* Fills each list with a limited number of objects from the respective iterator.
* Does not add CorruptData objects from the Iterator
* If one iterator returns a CorruptData insures that the other iterator returns a CorruptData
*
* Sorts the output if a sort order is provided.
*
* @param ddrList
* @param ddrIterator
* @param jextractList
* @param jextractIterator
* @param sortOrder
* @param maxCount the maximum number of items to populate the lists with
*/
@SuppressWarnings("unchecked")
public static void fillObjectList(List<Object> ddrList, Iterator ddrIterator, List<Object> jextractList, Iterator jextractIterator, Comparator sortOrder, int maxCount, boolean arrayList) {
List<Object> ddrObjects = new ArrayList<Object>();
List<Object> jextractObjects = new ArrayList<Object>();
while (ddrIterator.hasNext()) {
assertTrue("DDR returned more elements than jextract", jextractIterator.hasNext());
Object ddrObject = ddrIterator.next();
Object jextractObject = jextractIterator.next();
ddrObjects.add(ddrObject);
jextractObjects.add(jextractObject);
}
// removed assertion below because when using a sample rather than an exhaustive list one list can be larger than the other so long
// as the order is the same for the super set of list elements.
// assertFalse("jextract returned more elements than ddr", jextractIterator.hasNext());
Object[] ddrObjectsArray = ddrObjects.toArray();
Object[] jextractObjectsArray = jextractObjects.toArray();
if (sortOrder != null) {
Arrays.sort(ddrObjectsArray, sortOrder);
Arrays.sort(jextractObjectsArray, sortOrder);
}
int count = 0;
for (int i = 0; (i < ddrObjectsArray.length) && (count < maxCount); i++) {
Object ddrObject = ddrObjectsArray[i];
Object jextractObject = jextractObjectsArray[i];
if (!(ddrObject instanceof CorruptData) && !(jextractObject instanceof CorruptData)) {
JavaObject ddrJavaObject = (JavaObject) ddrObject;
JavaObject jextractJavaObject = (JavaObject) jextractObject;
try {
if ((ddrJavaObject.isArray() && jextractJavaObject.isArray()) == arrayList) {
ddrList.add(ddrObject);
jextractList.add(jextractObject);
count++;
}
} catch (CorruptDataException e) {
fail("CDE when populating heap list : " + e.getMessage());
}
continue;
}
if (ddrObject instanceof CorruptData && jextractObject instanceof CorruptData) {
continue;
}
fail("If DDR object is a CorruptData then jextract object must also be a CorruptData");
}
assertEquals("jextract and ddr returned iterators of different sizes", jextractList.size(), ddrList.size());
}
use of com.ibm.dtfj.java.JavaObject in project openj9 by eclipse.
the class JavaRuntimeTest method getHeapsTest.
@Test
public void getHeapsTest() {
Iterator<Object> iter = ((JavaRuntime) ddrTestObjects.get(0)).getHeaps();
while (iter.hasNext()) {
JavaHeap heap = (JavaHeap) iter.next();
Iterator<Object> objectIter = heap.getObjects();
int count = 0;
while (objectIter.hasNext()) {
// JavaObject javaObject = (JavaObject) objectIter.next();
// System.out.println(javaObject.get);
count++;
objectIter.next();
}
System.out.println(heap.getName() + ": " + count);
}
javaHeapComparator.testComparatorIteratorEquals(ddrTestObjects, jextractTestObjects, "getHeaps", JavaHeap.class);
}
use of com.ibm.dtfj.java.JavaObject in project openj9 by eclipse.
the class JavaClass method getReferences.
/* (non-Javadoc)
* @see com.ibm.dtfj.java.JavaClass#getReferences()
*/
public Iterator getReferences() {
// need to build a list of references from this class.
Vector references = new Vector();
JavaReference jRef = null;
// get the Constant Pool references from this class.
Iterator constantPoolIt = getConstantPoolReferences();
while (constantPoolIt.hasNext()) {
// get each reference in turn, note that the iterator can return JavaClass
// JavaObject and CorruptData. The CorruptData objects are ignored.
Object cpObject = constantPoolIt.next();
if (cpObject instanceof JavaObject) {
// add the reference to the container.
jRef = new JavaReference(_javaVM, this, cpObject, "Constant Pool Object", JavaReference.REFERENCE_CONSTANT_POOL, JavaReference.HEAP_ROOT_UNKNOWN, JavaReference.REACHABILITY_STRONG);
} else if (cpObject instanceof JavaClass) {
// got a JavaClass
JavaClass jClass = (JavaClass) cpObject;
// add the reference to the container.
jRef = new JavaReference(_javaVM, this, jClass, "Constant Pool Class", JavaReference.REFERENCE_CONSTANT_POOL, JavaReference.HEAP_ROOT_UNKNOWN, JavaReference.REACHABILITY_STRONG);
}
if (null != jRef) {
references.add(jRef);
}
}
// get the static field references from this class.
Iterator declaredFieldIt = getDeclaredFields();
while (declaredFieldIt.hasNext()) {
JavaField jField = (JavaField) declaredFieldIt.next();
// got a field, now test it to see if it is a static reference.
if (jField instanceof JavaStaticField) {
JavaStaticField sField = (JavaStaticField) jField;
try {
Object obj = sField.getReferenceType(null);
if (null != obj) {
if (obj instanceof JavaObject) {
// build a JavaReference type and add the reference to the container.
String fieldName = sField.getName();
String description = "Static field";
if (null != fieldName) {
description = description + " [field name:" + fieldName + "]";
}
JavaObject jObject = (JavaObject) obj;
jRef = new JavaReference(_javaVM, this, jObject, description, JavaReference.REFERENCE_STATIC_FIELD, JavaReference.HEAP_ROOT_UNKNOWN, JavaReference.REACHABILITY_STRONG);
references.add(jRef);
}
}
} catch (CorruptDataException e) {
// Corrupt data, so add it to the container.
references.add(e.getCorruptData());
} catch (MemoryAccessException e) {
// Memory access problems, so create a CorruptData object
// to describe the problem and add it to the container.
ImagePointer ptrInError = e.getPointer();
String message = e.getMessage();
references.add(new CorruptData(message, ptrInError));
} catch (IllegalArgumentException e) {
// No static data, so ignore.
}
}
}
addSuperclassReference(references);
addClassLoaderReference(references);
addClassObjectReference(references);
return references.iterator();
}
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