Examples with J9PoolPointer com.ibm.j9ddr.vm29.pointer.generated.J9PoolPointer used on opensource projects

Example 1 with J9PoolPointer

use of com.ibm.j9ddr.vm29.pointer.generated.J9PoolPointer in project openj9 by eclipse.

the class DumpContendedLoadTable method run.

public void run(String command, String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    if (0 != args.length) {
        String argument = args[0];
        if (argument.equalsIgnoreCase("help")) {
            help(out);
            return;
        }
    }
    try {
        J9JavaVMPointer javaVM = J9RASHelper.getVM(DataType.getJ9RASPointer());
        J9HashTablePointer contTable = javaVM.contendedLoadTable();
        J9PoolPointer poolPtr = contTable.listNodePool();
        Pool<J9ContendedLoadTableEntryPointer> pool = Pool.fromJ9Pool(poolPtr, J9ContendedLoadTableEntryPointer.class);
        SlotIterator<J9ContendedLoadTableEntryPointer> poolIterator = pool.iterator();
        if (poolIterator.hasNext()) {
            out.println("Active class loads:");
            while (poolIterator.hasNext()) {
                J9ContendedLoadTableEntryPointer entryPointer = poolIterator.next();
                String ldStatus = loadingStatusValues.get(entryPointer.status().longValue());
                if (null == ldStatus) {
                    ldStatus = "ILLEGAL VALUE: " + entryPointer.status();
                }
                J9VMThreadPointer loadingThread = entryPointer.thread();
                out.print(String.format("\tClassname: %s;\n\t\tLoader:  %s; Loading thread: %s %s\n\t\tStatus: %s; Table entry hash 0x%X\n", entryPointer.className().getCStringAtOffset(0, entryPointer.classNameLength().longValue()), entryPointer.classLoader().formatShortInteractive(), J9VMThreadHelper.getName(loadingThread), loadingThread.formatShortInteractive(), ldStatus, entryPointer.hashValue().longValue()));
            }
            MonitorIterator iterator = new MonitorIterator(javaVM);
            while (iterator.hasNext()) {
                Object current = iterator.next();
                if (current instanceof J9ThreadMonitorPointer) {
                    // System Monitor
                    SystemMonitor monitor = SystemMonitor.fromJ9ThreadMonitor((J9ThreadMonitorPointer) current);
                    final String monitorName = monitor.getName();
                    if (monitorName.matches(".*VM class table.*")) {
                        List<J9ThreadPointer> waitingThreads = monitor.getWaitingThreads();
                        if (!waitingThreads.isEmpty()) {
                            out.print("Waiting threads:\n");
                            for (J9ThreadPointer tp : waitingThreads) {
                                J9VMThreadPointer vmThread = J9ThreadHelper.getVMThread(tp);
                                if (vmThread.notNull()) {
                                    out.print(String.format("\t%s\t%s\n", vmThread.formatShortInteractive(), J9VMThreadHelper.getName(vmThread)));
                                } else {
                                    out.print(String.format("\t%s\t%s\n", tp.formatShortInteractive(), "[osthread]"));
                                }
                            }
                        }
                        break;
                    }
                }
            }
        } else {
            out.println("No active class loads");
        }
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}

Example 2 with J9PoolPointer

use of com.ibm.j9ddr.vm29.pointer.generated.J9PoolPointer in project openj9 by eclipse.

the class MonitorsCommand method j9threadCommand.

/**
 * See {@link MonitorsCommand#helpCommand(String[], PrintStream)} for
 * function documentation
 *
 * @param args
 *            command args
 * @param out
 *            the output stream
 * @throws DDRInteractiveCommandException
 */
private void j9threadCommand(String[] args, PrintStream out) throws DDRInteractiveCommandException {
    if (args.length < 2) {
        out.println("This command takes one address argument: \"!monitors j9thread <address>\"");
        return;
    }
    try {
        long address = CommandUtils.parsePointer(args[1], J9BuildFlags.env_data64);
        VoidPointer ptr = VoidPointer.cast(address);
        J9JavaVMPointer vm = J9RASHelper.getVM(DataType.getJ9RASPointer());
        J9VMThreadPointer mainThread = vm.mainThread();
        if (mainThread.isNull() || mainThread.osThread().isNull() || mainThread.osThread().library().isNull()) {
            throw new CorruptDataException("Cannot locate thread library");
        }
        J9ThreadLibraryPointer lib = mainThread.osThread().library();
        J9PoolPointer pool = lib.thread_pool();
        Pool<J9ThreadPointer> threadPool = Pool.fromJ9Pool(pool, J9ThreadPointer.class);
        SlotIterator<J9ThreadPointer> poolIterator = threadPool.iterator();
        J9ThreadPointer osThreadPtr = null;
        while (poolIterator.hasNext()) {
            if (ptr.equals(poolIterator.next())) {
                osThreadPtr = J9ThreadPointer.cast(ptr);
            }
        }
        if (null == osThreadPtr) {
            throw new DDRInteractiveCommandException(String.format("Could not find any j9thread at address %s\n", ptr.getHexAddress()));
        }
        // Is there an associated J9VMThread?
        J9VMThreadPointer vmThread = J9ThreadHelper.getVMThread(osThreadPtr);
        // Step 1: Print the general info for the VM and native threads:
        out.println(String.format("%s\t%s\t// %s", osThreadPtr.formatShortInteractive(), vmThread.notNull() ? vmThread.formatShortInteractive() : "<none>", vmThread.notNull() ? J9VMThreadHelper.getName(vmThread) : "[osthread]"));
        printMonitorsForJ9Thread(out, vm, osThreadPtr);
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}

Example 3 with J9PoolPointer

use of com.ibm.j9ddr.vm29.pointer.generated.J9PoolPointer in project openj9 by eclipse.

the class MonitorsCommand method threadCommand.

/**
 * Dumps all monitors that are active for the specified J9Thread/J9VMThread/java.lang.Thread
 * @param args
 * @param out
 * @throws DDRInteractiveCommandException
 */
private void threadCommand(String[] args, PrintStream out) throws DDRInteractiveCommandException {
    if (args.length < 2) {
        out.println("This command takes one address argument: \"!monitors thread <address>\"");
        return;
    }
    try {
        long address = CommandUtils.parsePointer(args[1], J9BuildFlags.env_data64);
        VoidPointer ptr = VoidPointer.cast(address);
        J9JavaVMPointer vm = J9RASHelper.getVM(DataType.getJ9RASPointer());
        J9VMThreadPointer mainThread = vm.mainThread();
        J9ThreadLibraryPointer lib = mainThread.osThread().library();
        J9PoolPointer pool = lib.thread_pool();
        Pool<J9ThreadPointer> threadPool = Pool.fromJ9Pool(pool, J9ThreadPointer.class);
        SlotIterator<J9ThreadPointer> poolIterator = threadPool.iterator();
        J9ThreadPointer osThreadPtr = null;
        while (poolIterator.hasNext()) {
            osThreadPtr = poolIterator.next();
            // Is there an associated J9VMThread?
            J9VMThreadPointer vmThread = J9ThreadHelper.getVMThread(osThreadPtr);
            J9ObjectPointer jlThread = null;
            if (vmThread.notNull()) {
                jlThread = vmThread.threadObject();
                if ((null != jlThread) && jlThread.equals(ptr)) {
                    out.println("Found java/lang/Thread @ " + ptr.getHexAddress());
                    printMonitorsForJ9VMThread(out, vm, vmThread);
                    return;
                } else if (vmThread.equals(ptr)) {
                    out.println("Found j9vmthread @ " + ptr.getHexAddress());
                    printMonitorsForJ9VMThread(out, vm, vmThread);
                    return;
                }
            }
            if (osThreadPtr.equals(ptr)) {
                out.println("Found j9thread @ " + ptr.getHexAddress());
                if (vmThread.notNull()) {
                    printMonitorsForJ9VMThread(out, vm, vmThread);
                }
                printMonitorsForJ9Thread(out, vm, osThreadPtr);
                return;
            }
        }
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}

Example 4 with J9PoolPointer

use of com.ibm.j9ddr.vm29.pointer.generated.J9PoolPointer in project openj9 by eclipse.

the class GCVMThreadJNISlotIterator method hasNext.

public boolean hasNext() {
    if (jniFrame.isNull()) {
        // No more frames
        return false;
    }
    if (null == poolIterator) {
        // Haven't looked at the current frame yet
        try {
            J9PoolPointer poolPtr = J9PoolPointer.cast(jniFrame.references());
            poolIterator = Pool.fromJ9Pool(poolPtr, PointerPointer.class).iterator();
        } catch (CorruptDataException cde) {
            // can try to recover from this
            raiseCorruptDataEvent("Error looking at current frame", cde, false);
            // Try moving to the previous frame
            try {
                jniFrame = jniFrame.previous();
                poolIterator = null;
                return hasNext();
            } catch (CorruptDataException cde2) {
                // cannot recover from this
                raiseCorruptDataEvent("Error looking at previous frame", cde2, true);
                return false;
            }
        }
    }
    if (poolIterator.hasNext()) {
        return true;
    } else {
        // Move to the previous frame
        try {
            jniFrame = jniFrame.previous();
            poolIterator = null;
            return hasNext();
        } catch (CorruptDataException e) {
            // cannot recover from this
            raiseCorruptDataEvent("Error moving to previous frame", e, true);
            return false;
        }
    }
}

Example 5 with J9PoolPointer

use of com.ibm.j9ddr.vm29.pointer.generated.J9PoolPointer in project openj9 by eclipse.

the class DumpAllClassloadersCommand method run.

/**
 * Run method for !dumpallclassloaders extension.
 *
 * @param command  !dumpallclassloaders
 * @param args	!dumpallclassloaders extension accepts no args
 * @param context Context
 * @param out PrintStream
 * @throws DDRInteractiveCommandException
 */
public void run(String command, String[] args, Context context, PrintStream out) throws DDRInteractiveCommandException {
    if (args.length != 0) {
        printUsage(out);
        return;
    }
    try {
        if (J9BuildFlags.env_data64) {
            out.append("+------------------------------------------------------------------------- \n");
            out.append("|    ClassLoader    | SharedLibraries | ClassHashTable  |   jniIDs Pool   |\n");
            out.append("|                   |      Pool       |                 |                 |\n");
            out.append("|                   |-----------------+-----------------+-----------------| \n");
            out.append("|      Address      | used | capacity | used | capacity | used | capacity |\n");
            out.append("+-------------------+-----------------+-----------------+----------------- \n");
        } else {
            out.append("+----------------------------------------------------------------- \n");
            out.append("|ClassLoader| SharedLibraries | ClassHashTable  |   jniIDs Pool   |\n");
            out.append("|           |      Pool       |                 |                 |\n");
            out.append("|           |-----------------+-----------------+-----------------| \n");
            out.append("| Address   | used | capacity | used | capacity | used | capacity |\n");
            out.append("+-----------+-----------------+-----------------+----------------- \n");
        }
        GCClassLoaderIterator iterator = GCClassLoaderIterator.from();
        J9ClassLoaderPointer classLoaderPointer;
        String classLoaderAddress;
        long sharedLibPoolNumOfelements;
        long sharedLibPoolCapacity;
        long classHashTableNumOfelements;
        long classHashTableCapacity;
        long jniIDsPoolNumOfelements;
        long jniIDsPoolCapacity;
        while (iterator.hasNext()) {
            classLoaderPointer = iterator.next();
            classLoaderAddress = classLoaderPointer.getHexAddress();
            J9PoolPointer sharedLibraries = classLoaderPointer.sharedLibraries();
            if (!sharedLibraries.isNull()) {
                Pool<J9PoolPuddlePointer> pool = Pool.fromJ9Pool(sharedLibraries, J9PoolPuddlePointer.class);
                sharedLibPoolNumOfelements = pool.numElements();
                sharedLibPoolCapacity = pool.capacity();
            } else {
                sharedLibPoolNumOfelements = 0;
                sharedLibPoolCapacity = 0;
            }
            J9HashTablePointer classHashTable = classLoaderPointer.classHashTable();
            if (!classHashTable.isNull()) {
                if (!classHashTable.listNodePool().isNull()) {
                    J9PoolPointer listNodePool = classHashTable.listNodePool();
                    Pool<J9PoolPuddlePointer> pool = Pool.fromJ9Pool(listNodePool, J9PoolPuddlePointer.class);
                    classHashTableNumOfelements = pool.numElements();
                    classHashTableCapacity = pool.capacity();
                } else {
                    classHashTableNumOfelements = classHashTable.numberOfNodes().longValue();
                    classHashTableCapacity = classHashTable.tableSize().longValue();
                }
            } else {
                classHashTableNumOfelements = 0;
                classHashTableCapacity = 0;
            }
            J9PoolPointer jniIDs = classLoaderPointer.jniIDs();
            if (!jniIDs.isNull()) {
                Pool<J9PoolPuddlePointer> pool = Pool.fromJ9Pool(jniIDs, J9PoolPuddlePointer.class);
                jniIDsPoolNumOfelements = pool.numElements();
                jniIDsPoolCapacity = pool.capacity();
            } else {
                jniIDsPoolNumOfelements = 0;
                jniIDsPoolCapacity = 0;
            }
            String output = format(classLoaderAddress, sharedLibPoolNumOfelements, sharedLibPoolCapacity, classHashTableNumOfelements, classHashTableCapacity, jniIDsPoolNumOfelements, jniIDsPoolCapacity);
            out.println(output);
        }
    } catch (CorruptDataException e) {
        throw new DDRInteractiveCommandException(e);
    }
}