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

Example 11 with CorruptDataException

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

the class InfoThreadCommand method printThreadSummary.

private void printThreadSummary(ImageProcess ip) {
    // Prints a summary list of native thread IDs
    int count = 0;
    Iterator itThread = ip.getThreads();
    while (itThread.hasNext()) {
        Object next = itThread.next();
        if (next instanceof CorruptData)
            continue;
        ImageThread it = (ImageThread) next;
        if (count % 8 == 0) {
            if (0 == count)
                out.print("\n\nNative thread IDs for current process:");
            out.print("\n ");
        }
        try {
            out.print(Utils.padWithSpaces(it.getID(), 8));
        } catch (CorruptDataException e) {
            out.print(Exceptions.getCorruptDataExceptionString());
        }
        count++;
    }
    out.print("\n");
}

Example 12 with CorruptDataException

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

the class XJCommand method printReferences.

/**
 * Print the references from the given object. Omit the first reference: this is always a reference to the
 * object's class.
 */
public static void printReferences(JavaObject jo, PrintStream out) {
    Iterator<?> references = jo.getReferences();
    if (references.hasNext()) {
        // reference to the class, ignore this one
        references.next();
    }
    if (!references.hasNext()) {
        out.print("\t    references: <none>\n ");
        out.print("\t     ");
    } else {
        out.print("\t    references:\n ");
        out.print("\t     ");
        while (references.hasNext()) {
            Object potential_reference = references.next();
            if (potential_reference instanceof JavaReference) {
                JavaReference reference = (JavaReference) potential_reference;
                try {
                    Object target = reference.getTarget();
                    if (target instanceof JavaObject) {
                        out.print(" 0x" + Long.toHexString(((JavaObject) target).getID().getAddress()));
                    } else if (target instanceof JavaClass) {
                        out.print(" 0x" + Long.toHexString(((JavaClass) target).getID().getAddress()));
                    }
                } catch (DataUnavailable e) {
                // don't print anything
                } catch (CorruptDataException e) {
                    out.print(Exceptions.getCorruptDataExceptionString());
                }
            }
        }
    }
    out.print("\n\n");
}

Example 13 with CorruptDataException

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

the class XXCommand method doCommand.

public void doCommand(String[] args) {
    Long address;
    String param = args[0];
    address = Utils.longFromStringWithPrefix(param);
    if (null == address) {
        out.println("invalid hex address specify; address must be specified as " + "\"0x<hex_address>\"");
        return;
    }
    out.print("\n");
    boolean found = false;
    for (int index = 0; index < argUnitNumber; index++) {
        long currAddr = address.longValue() + (index * argUnitSize);
        out.print("\t");
        out.print(Utils.toHex(currAddr));
        out.print(": ");
        ImageAddressSpace ias = ctx.getAddressSpace();
        ImagePointer ip = ias.getPointer(currAddr);
        byte b = 0;
        short s = 0;
        int i = 0;
        long l = 0;
        try {
            switch(argUnitSize) {
                case 1:
                    b = ip.getByteAt(0);
                    break;
                case 2:
                    s = ip.getShortAt(0);
                    break;
                case 4:
                    i = ip.getIntAt(0);
                    break;
                case 8:
                    l = ip.getLongAt(0);
                    break;
            }
            found = true;
        } catch (CorruptDataException e) {
            found = false;
        } catch (MemoryAccessException e) {
            found = false;
        }
        if (found) {
            switch(argUnitSize) {
                case 1:
                    out.print(Utils.toFixedWidthHex(b));
                    break;
                case 2:
                    out.print(Utils.toFixedWidthHex(s));
                    break;
                case 4:
                    out.print(Utils.toFixedWidthHex(i));
                    break;
                case 8:
                    out.print(Utils.toFixedWidthHex(l));
                    break;
            }
        }
        out.print("\n");
    }
    if (!found) {
        out.print("<address not found in any address space>");
    }
    out.print("\n");
}

Example 14 with CorruptDataException

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

the class J9DDRImageProcess method getThreadMap.

private Map<Long, Object> getThreadMap() {
    Map<Long, Object> dtfjThreadMap = null;
    if (cachedThreads != null) {
        dtfjThreadMap = (Map<Long, Object>) cachedThreads.get();
    }
    /* We did not find a cache of threads, build one. */
    if (dtfjThreadMap == null) {
        Collection<? extends IOSThread> threads = null;
        long corruptId = -1;
        try {
            threads = process.getThreads();
        } catch (com.ibm.j9ddr.CorruptDataException e) {
            return Collections.singletonMap(corruptId, (Object) new J9DDRCorruptData(process, e));
        }
        // On Linux, fork/abort system dumping means we only get one thread, with an altered TID. In this case we have logic in
        // getCurrentThread that renames the dump thread. Add this thread in addition to the native thread.
        boolean forkandabort = ((process.getPlatform() == Platform.LINUX) && (threads.size() == 1));
        dtfjThreadMap = new HashMap<Long, Object>();
        if (forkandabort) {
            try {
                J9DDRBaseImageThread currentThread = (J9DDRBaseImageThread) getCurrentThread();
                if (currentThread != null) {
                    dtfjThreadMap.put(currentThread.getThreadId(), currentThread);
                }
            } catch (CorruptDataException e) {
                // A corrupt thread won't have an id but we will still return the corrupt
                // data in the list of all threads.
                dtfjThreadMap.put(corruptId--, new J9DDRCorruptData(process, e.getMessage()));
            } catch (com.ibm.j9ddr.CorruptDataException e) {
                // A corrupt thread won't have an id but we will still return the corrupt
                // data in the list of all threads.
                dtfjThreadMap.put(corruptId--, new J9DDRCorruptData(process, e.getMessage()));
            }
        }
        for (IOSThread thread : threads) {
            try {
                dtfjThreadMap.put(thread.getThreadId(), new J9DDRImageThread(process, thread));
            } catch (com.ibm.j9ddr.CorruptDataException e) {
                // In the unlikely event that we can't get the thread id, store the thread
                // without the id.
                dtfjThreadMap.put(corruptId--, new J9DDRImageThread(process, thread));
            }
        }
        cachedThreads = new WeakReference<Map<Long, Object>>(dtfjThreadMap);
    }
    return dtfjThreadMap;
}

Example 15 with CorruptDataException

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

the class DTFJJavaObject method arraycopy.

public void arraycopy(int srcStart, Object dst, int dstStart, int length) throws CorruptDataException, MemoryAccessException {
    fetchDeferredData();
    if (!objectIsArray) {
        throw new IllegalArgumentException("Object is not an array");
    }
    J9IndexableObjectPointer array = J9IndexableObjectPointer.cast(object);
    try {
        validateArrayCopyParameters(array, srcStart, dst, dstStart, length);
        // CMVC 171150 : use helper object to correctly get the class name
        String className = J9IndexableObjectHelper.getClassName(array);
        if ((null == className) || (className.length() < 2)) {
            J9DDRCorruptData cd = new J9DDRCorruptData(DTFJContext.getProcess(), "The class name for this object could not be determined", object.getAddress());
            throw new CorruptDataException(cd);
        }
        if (className.charAt(1) == 'L' || className.charAt(1) == '[') {
            // JExtract/DTFJ can cope with dst of either Object[] or JavaObject[] - but we need to detect other things
            if (!dst.getClass().equals(Object[].class) && !(dst instanceof JavaObject[])) {
                throw new IllegalArgumentException("Type of dst object (" + dst.getClass().getName() + ") incompatible with Object array. Should be JavaObject[] or Object[]");
            }
            J9ObjectPointer[] intermediateArray = new J9ObjectPointer[length];
            Object[] castedDst = (Object[]) dst;
            if (dstStart + (long) length > castedDst.length) {
                throw new ArrayIndexOutOfBoundsException("Supplied destination array too small. Requires: " + (dstStart + (long) length) + ", was " + castedDst.length);
            }
            J9IndexableObjectHelper.getData(array, intermediateArray, srcStart, length, 0);
            for (int i = 0; i < length; i++) {
                if (intermediateArray[i].isNull()) {
                    castedDst[dstStart + i] = null;
                } else {
                    castedDst[dstStart + i] = new DTFJJavaObject(intermediateArray[i]);
                }
            }
        } else {
            // For primitives we can pass through the client object. The type verification will be done in J9IndexableObjectPointer
            J9IndexableObjectHelper.getData(array, dst, srcStart, length, dstStart);
        }
    } catch (Throwable t) {
        throw J9DDRDTFJUtils.handleAllButMemAccExAsCorruptDataException(DTFJContext.getProcess(), t, whitelist);
    }
}