Examples with CorruptDataException com.ibm.dtfj.image.CorruptDataException used on opensource projects

Example 51 with CorruptDataException

use of com.ibm.dtfj.image.CorruptDataException in project openj9 by eclipse.

the class ClassOutput method printNonStaticFields.

public static void printNonStaticFields(JavaClass jc, PrintStream out) {
    // if the class name refers to an array, return because there are no fields
    try {
        if (jc.isArray()) {
            return;
        }
    } catch (CorruptDataException cde) {
        out.print("\t  <can't determine if class is array; assuming it's not>\n\n");
    }
    String className;
    try {
        className = jc.getName();
    } catch (CorruptDataException cde) {
        className = null;
    }
    // we've found a class, so we'll print out its static fields
    boolean found = false;
    Iterator itField = jc.getDeclaredFields();
    while (itField.hasNext()) {
        JavaField jf = (JavaField) itField.next();
        boolean isStatic;
        try {
            isStatic = Modifier.isStatic(jf.getModifiers());
        } catch (CorruptDataException e) {
            out.print("\t   <error while getting modifier for field \"");
            try {
                out.print(jf.getName());
            } catch (CorruptDataException d) {
                out.print(Exceptions.getCorruptDataExceptionString());
            }
            out.print("\", " + Exceptions.getCorruptDataExceptionString() + ">");
            isStatic = false;
        }
        if (!isStatic) {
            if (!found) {
                out.print("\t  non-static fields for \"" + className + "\"\n");
            }
            found = true;
            printNonStaticFieldData(null, jf, out);
        }
    }
    if (found)
        out.print("\n");
    else
        out.print("\t  \"" + className + "\" has no non-static fields\n\n");
}

Example 52 with CorruptDataException

use of com.ibm.dtfj.image.CorruptDataException in project openj9 by eclipse.

the class ImageStackFrameTest method loadTestObjects.

protected void loadTestObjects(JavaRuntime ddrRuntime, List<Object> ddrObjects, JavaRuntime jextractRuntime, List<Object> jextractObjects) {
    // Extract stack frames from all threads
    List<Object> ddrThreads = new LinkedList<Object>();
    List<Object> jextractThreads = new LinkedList<Object>();
    Comparator<Object> c = new Comparator<Object>() {

        public int compare(Object o1, Object o2) {
            if (o1 instanceof ImageThread && o2 instanceof ImageThread) {
                ImageThread t1 = (ImageThread) o1;
                ImageThread t2 = (ImageThread) o2;
                try {
                    return t1.getID().compareTo(t2.getID());
                } catch (CorruptDataException e) {
                    return 0;
                }
            } else {
                return 0;
            }
        }
    };
    fillLists(ddrThreads, ddrProcess.getThreads(), jextractThreads, jextractProcess.getThreads(), c);
    assertEquals("Different numbers of threads", jextractThreads.size(), ddrThreads.size());
    Collections.sort(ddrThreads, c);
    Collections.sort(jextractThreads, c);
    for (int i = 0; i != ddrThreads.size(); i++) {
        ImageThread ddrThreadObj = (ImageThread) ddrThreads.get(i);
        ImageThread jextractThreadObj = (ImageThread) jextractThreads.get(i);
        Exception ddrException = null;
        Exception jextractException = null;
        try {
            Iterator<?> it = ddrThreadObj.getStackFrames();
            slurpIterator(it, ddrObjects);
        } catch (DataUnavailable e) {
            e.printStackTrace();
            ddrException = e;
        }
        try {
            Iterator<?> it = jextractThreadObj.getStackFrames();
            slurpIterator(it, jextractObjects);
        } catch (DataUnavailable e) {
            e.printStackTrace();
            jextractException = e;
        }
        if (ddrException != null || jextractException != null) {
            if (ddrException != null && jextractException != null) {
                assertEquals("JExtract and DDR threw different exceptions", jextractException.getClass(), ddrException.getClass());
            } else {
                if (ddrException != null) {
                    fail("DDR threw an exception and jextract didn't");
                } else {
                    fail("Jextract threw an exception and DDR didn't");
                }
            }
        }
    }
}

Example 53 with CorruptDataException

use of com.ibm.dtfj.image.CorruptDataException 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 54 with CorruptDataException

use of com.ibm.dtfj.image.CorruptDataException 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 55 with CorruptDataException

use of com.ibm.dtfj.image.CorruptDataException in project openj9 by eclipse.

the class JavaObject method getSize.

/* (non-Javadoc)
	 * @see com.ibm.dtfj.java.JavaObject#getSize()
	 */
public long getSize() throws CorruptDataException {
    // this is the total number of bytes consumed by the object so we will total up the section sizes
    Iterator sections = getSections();
    long size = 0;
    // Originally came from Dump analyzer defect 74504.
    while (sections.hasNext()) {
        Object qsect = sections.next();
        if (qsect instanceof ImageSection) {
            ImageSection section = (ImageSection) qsect;
            size += section.getSize();
        } else {
            if (qsect instanceof CorruptData) {
                throw new CorruptDataException((CorruptData) qsect);
            } else {
                throw new RuntimeException("Found unexpected object " + qsect.getClass().getName());
            }
        }
    }
    return size;
}