private static void checkGarbageCollectionNotificationInfoContent(
GarbageCollectionNotificationInfo notif) throws Exception {
System.out.println("GC notification for " + notif.getGcName());
System.out.print("Action: " + notif.getGcAction());
System.out.println(" Cause: " + notif.getGcCause());
GcInfo info = notif.getGcInfo();
System.out.print("GC Info #" + info.getId());
System.out.print(" start:" + info.getStartTime());
System.out.print(" end:" + info.getEndTime());
System.out.println(" (" + info.getDuration() + "ms)");
Map<String, MemoryUsage> usage = info.getMemoryUsageBeforeGc();
List<String> pnames = new ArrayList<String>();
for (Map.Entry entry : usage.entrySet()) {
String poolname = (String) entry.getKey();
pnames.add(poolname);
MemoryUsage busage = (MemoryUsage) entry.getValue();
MemoryUsage ausage = (MemoryUsage) info.getMemoryUsageAfterGc().get(poolname);
if (ausage == null) {
throw new RuntimeException("After Gc Memory does not exist" + " for " + poolname);
}
System.out.println("Usage for pool " + poolname);
System.out.println(" Before GC: " + busage);
System.out.println(" After GC: " + ausage);
}
// check if memory usage for all memory pools are returned
List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
for (MemoryPoolMXBean p : pools) {
if (!pnames.contains(p.getName())) {
throw new RuntimeException(
"GcInfo does not contain " + "memory usage for pool " + p.getName());
}
}
}
public static void main(String[] args) throws Exception {
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final Boolean isNotificationSupported =
AccessController.doPrivileged(
new PrivilegedAction<Boolean>() {
public Boolean run() {
try {
Class cl = Class.forName("sun.management.VMManagementImpl");
Field f = cl.getDeclaredField("gcNotificationSupport");
f.setAccessible(true);
return f.getBoolean(null);
} catch (ClassNotFoundException e) {
return false;
} catch (NoSuchFieldException e) {
return false;
} catch (IllegalAccessException e) {
return false;
}
}
});
if (!isNotificationSupported) {
System.out.println("GC Notification not supported by the JVM, test skipped");
return;
}
final ObjectName gcMXBeanPattern = new ObjectName("java.lang:type=GarbageCollector,*");
Set<ObjectName> names = mbs.queryNames(gcMXBeanPattern, null);
if (names.isEmpty()) throw new Exception("Test incorrect: no GC MXBeans");
number = names.size();
for (ObjectName n : names) {
if (mbs.isInstanceOf(n, "javax.management.NotificationEmitter")) {
listenerInvoked.put(n.getCanonicalName(), null);
GcListener listener = new GcListener();
mbs.addNotificationListener(n, listener, null, null);
}
}
// Invocation of System.gc() to trigger major GC
System.gc();
// Allocation of many short living and small objects to trigger minor GC
Object data[] = new Object[32];
for (int i = 0; i < 100000000; i++) {
data[i % 32] = new int[8];
}
int wakeup = 0;
synchronized (synchronizer) {
while (count != number) {
synchronizer.wait(10000);
wakeup++;
if (wakeup > 10) break;
}
}
for (GarbageCollectionNotificationInfo notif : listenerInvoked.values()) {
checkGarbageCollectionNotificationInfoContent(notif);
}
System.out.println("Test passed");
}
static class Holder {
Holder(MongoOptions options) {
_options = options;
}
DBPortPool get(InetSocketAddress addr) {
DBPortPool p = _pools.get(addr);
if (p != null) return p;
synchronized (_pools) {
p = _pools.get(addr);
if (p != null) {
return p;
}
p = new DBPortPool(addr, _options);
_pools.put(addr, p);
String name = "com.mongodb:type=ConnectionPool,host=" + addr.toString().replace(':', '_');
try {
ObjectName on = new ObjectName(name);
if (_server.isRegistered(on)) {
_server.unregisterMBean(on);
Bytes.LOGGER.log(
Level.INFO, "multiple Mongo instances for same host, jmx numbers might be off");
}
_server.registerMBean(p, on);
} catch (JMException e) {
Bytes.LOGGER.log(Level.WARNING, "jmx registration error, continuing", e);
} catch (java.security.AccessControlException e) {
Bytes.LOGGER.log(Level.WARNING, "jmx registration error, continuing", e);
}
}
return p;
}
void close() {
synchronized (_pools) {
for (DBPortPool p : _pools.values()) {
p.close();
}
}
}
final MongoOptions _options;
final Map<InetSocketAddress, DBPortPool> _pools =
Collections.synchronizedMap(new HashMap<InetSocketAddress, DBPortPool>());
final MBeanServer _server = ManagementFactory.getPlatformMBeanServer();
}
private static void checkPlatformMBeans() throws Exception {
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
Set<ObjectName> mbeanNames = mbs.queryNames(null, null);
for (ObjectName name : mbeanNames) {
if (!mbs.isInstanceOf(name, NotificationBroadcaster.class.getName())) {
System.out.println(name + ": not a NotificationBroadcaster");
} else {
MBeanInfo mbi = mbs.getMBeanInfo(name);
check(name.toString(), mbi.getNotifications());
}
}
}
public static void main(String[] args) throws Exception {
// TODO Auto-generated method stub
if (args.length != 4) {
System.err.println("Please provide process id zabbix-host zabbix-port host-guid");
System.exit(-1);
}
String processPid = args[0];
String zabbixHost = args[1];
String zabbixPort = args[2];
String hostGuid = args[3];
VirtualMachine vm = VirtualMachine.attach(processPid);
String connectorAddr =
vm.getAgentProperties().getProperty("com.sun.management.jmxremote.localConnectorAddress");
if (connectorAddr == null) {
String agent =
vm.getSystemProperties().getProperty("java.home")
+ File.separator
+ "lib"
+ File.separator
+ "management-agent.jar";
vm.loadAgent(agent);
connectorAddr =
vm.getAgentProperties().getProperty("com.sun.management.jmxremote.localConnectorAddress");
}
JMXServiceURL serviceURL = new JMXServiceURL(connectorAddr);
JMXConnector connector = JMXConnectorFactory.connect(serviceURL);
MBeanServerConnection mbsc = connector.getMBeanServerConnection();
ObjectName objName = new ObjectName(ManagementFactory.THREAD_MXBEAN_NAME);
Set<ObjectName> mbeans = mbsc.queryNames(objName, null);
for (ObjectName name : mbeans) {
ThreadMXBean threadBean;
threadBean =
ManagementFactory.newPlatformMXBeanProxy(mbsc, name.toString(), ThreadMXBean.class);
long threadIds[] = threadBean.getAllThreadIds();
for (long threadId : threadIds) {
ThreadInfo threadInfo = threadBean.getThreadInfo(threadId);
System.out.println(threadInfo.getThreadName() + " / " + threadInfo.getThreadState());
}
}
}
public ActiveManagementCoordinator() throws Exception {
this.mbs = ManagementFactory.getPlatformMBeanServer();
this.regName = getRegistryName();
}
private void tryConnect(boolean requireRemoteSSL) throws IOException {
if (jmxUrl == null && "localhost".equals(hostName) && port == 0) {
// Monitor self
this.jmxc = null;
this.mbsc = ManagementFactory.getPlatformMBeanServer();
this.server = Snapshot.newSnapshot(mbsc);
} else {
// Monitor another process
if (lvm != null) {
if (!lvm.isManageable()) {
lvm.startManagementAgent();
if (!lvm.isManageable()) {
// FIXME: what to throw
throw new IOException(lvm + "not manageable");
}
}
if (this.jmxUrl == null) {
this.jmxUrl = new JMXServiceURL(lvm.connectorAddress());
}
}
Map<String, Object> env = new HashMap<String, Object>();
if (requireRemoteSSL) {
env.put("jmx.remote.x.check.stub", "true");
}
// Need to pass in credentials ?
if (userName == null && password == null) {
if (isVmConnector()) {
// Check for SSL config on reconnection only
if (stub == null) {
checkSslConfig();
}
this.jmxc = new RMIConnector(stub, null);
jmxc.connect(env);
} else {
this.jmxc = JMXConnectorFactory.connect(jmxUrl, env);
}
} else {
env.put(JMXConnector.CREDENTIALS, new String[] {userName, password});
if (isVmConnector()) {
// Check for SSL config on reconnection only
if (stub == null) {
checkSslConfig();
}
this.jmxc = new RMIConnector(stub, null);
jmxc.connect(env);
} else {
this.jmxc = JMXConnectorFactory.connect(jmxUrl, env);
}
}
this.mbsc = jmxc.getMBeanServerConnection();
this.server = Snapshot.newSnapshot(mbsc);
}
this.isDead = false;
try {
ObjectName on = new ObjectName(THREAD_MXBEAN_NAME);
this.hasPlatformMXBeans = server.isRegistered(on);
this.hasHotSpotDiagnosticMXBean =
server.isRegistered(new ObjectName(HOTSPOT_DIAGNOSTIC_MXBEAN_NAME));
// check if it has 6.0 new APIs
if (this.hasPlatformMXBeans) {
MBeanOperationInfo[] mopis = server.getMBeanInfo(on).getOperations();
// look for findDeadlockedThreads operations;
for (MBeanOperationInfo op : mopis) {
if (op.getName().equals("findDeadlockedThreads")) {
this.supportsLockUsage = true;
break;
}
}
on = new ObjectName(COMPILATION_MXBEAN_NAME);
this.hasCompilationMXBean = server.isRegistered(on);
}
} catch (MalformedObjectNameException e) {
// should not reach here
throw new InternalError(e.getMessage());
} catch (IntrospectionException e) {
InternalError ie = new InternalError(e.getMessage());
ie.initCause(e);
throw ie;
} catch (InstanceNotFoundException e) {
InternalError ie = new InternalError(e.getMessage());
ie.initCause(e);
throw ie;
} catch (ReflectionException e) {
InternalError ie = new InternalError(e.getMessage());
ie.initCause(e);
throw ie;
}
if (hasPlatformMXBeans) {
// WORKAROUND for bug 5056632
// Check if the access role is correct by getting a RuntimeMXBean
getRuntimeMXBean();
}
}
public ActiveManagementCoordinator() throws Exception {
this.mbs = ManagementFactory.getPlatformMBeanServer();
}
public class ThreadMXBeanProxy {
private static MBeanServer server = ManagementFactory.getPlatformMBeanServer();
private static ThreadMXBean mbean;
static Mutex mutex = new Mutex();
static Object lock = new Object();
static MyThread thread = new MyThread();
public static void main(String[] argv) throws Exception {
mbean = newPlatformMXBeanProxy(server, THREAD_MXBEAN_NAME, ThreadMXBean.class);
if (!mbean.isSynchronizerUsageSupported()) {
System.out.println("Monitoring of synchronizer usage not supported");
return;
}
thread.setDaemon(true);
thread.start();
// wait until myThread acquires mutex and lock owner is set.
while (!(mutex.isLocked() && mutex.getLockOwner() == thread)) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
long[] ids = new long[] {thread.getId()};
// validate the local access
ThreadInfo[] infos = getThreadMXBean().getThreadInfo(ids, true, true);
if (infos.length != 1) {
throw new RuntimeException(
"Returned ThreadInfo[] of length=" + infos.length + ". Expected to be 1.");
}
thread.checkThreadInfo(infos[0]);
// validate the remote access
infos = mbean.getThreadInfo(ids, true, true);
if (infos.length != 1) {
throw new RuntimeException(
"Returned ThreadInfo[] of length=" + infos.length + ". Expected to be 1.");
}
thread.checkThreadInfo(infos[0]);
boolean found = false;
infos = mbean.dumpAllThreads(true, true);
for (ThreadInfo ti : infos) {
if (ti.getThreadId() == thread.getId()) {
thread.checkThreadInfo(ti);
found = true;
}
}
if (!found) {
throw new RuntimeException("No ThreadInfo found for MyThread");
}
System.out.println("Test passed");
}
static class MyThread extends Thread {
public MyThread() {
super("MyThread");
}
public void run() {
synchronized (lock) {
mutex.lock();
Object o = new Object();
synchronized (o) {
try {
o.wait();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
}
}
int OWNED_MONITORS = 1;
int OWNED_SYNCS = 1;
void checkThreadInfo(ThreadInfo info) {
if (!getName().equals(info.getThreadName())) {
throw new RuntimeException(
"Name: " + info.getThreadName() + " not matched. Expected: " + getName());
}
MonitorInfo[] monitors = info.getLockedMonitors();
if (monitors.length != OWNED_MONITORS) {
throw new RuntimeException(
"Number of locked monitors = "
+ monitors.length
+ " not matched. Expected: "
+ OWNED_MONITORS);
}
MonitorInfo m = monitors[0];
StackTraceElement ste = m.getLockedStackFrame();
int depth = m.getLockedStackDepth();
StackTraceElement[] stacktrace = info.getStackTrace();
if (!ste.equals(stacktrace[depth])) {
System.out.println("LockedStackFrame:- " + ste);
System.out.println("StackTrace at " + depth + " :-" + stacktrace[depth]);
throw new RuntimeException(
"LockedStackFrame does not match " + "stack frame in ThreadInfo.getStackTrace");
}
String className = lock.getClass().getName();
int hcode = System.identityHashCode(lock);
if (!className.equals(m.getClassName())
|| hcode != m.getIdentityHashCode()
|| !m.getLockedStackFrame().getMethodName().equals("run")) {
System.out.println(info);
throw new RuntimeException("MonitorInfo " + m + " doesn't match.");
}
LockInfo[] syncs = info.getLockedSynchronizers();
if (syncs.length != OWNED_SYNCS) {
throw new RuntimeException(
"Number of locked syncs = " + syncs.length + " not matched. Expected: " + OWNED_SYNCS);
}
AbstractOwnableSynchronizer s = mutex.getSync();
String lockName = s.getClass().getName();
hcode = System.identityHashCode(s);
if (!lockName.equals(syncs[0].getClassName())) {
throw new RuntimeException(
"LockInfo : " + syncs[0] + " class name not matched. Expected: " + lockName);
}
if (hcode != syncs[0].getIdentityHashCode()) {
throw new RuntimeException(
"LockInfo: " + syncs[0] + " IdentityHashCode not matched. Expected: " + hcode);
}
LockInfo li = info.getLockInfo();
if (li == null) {
throw new RuntimeException("Expected non-null LockInfo");
}
}
}
static class Mutex implements Lock, java.io.Serializable {
// Our internal helper class
class Sync extends AbstractQueuedSynchronizer {
// Report whether in locked state
protected boolean isHeldExclusively() {
return getState() == 1;
}
// Acquire the lock if state is zero
public boolean tryAcquire(int acquires) {
assert acquires == 1; // Otherwise unused
if (compareAndSetState(0, 1)) {
setExclusiveOwnerThread(Thread.currentThread());
return true;
}
return false;
}
// Release the lock by setting state to zero
protected boolean tryRelease(int releases) {
assert releases == 1; // Otherwise unused
if (getState() == 0) throw new IllegalMonitorStateException();
setExclusiveOwnerThread(null);
setState(0);
return true;
}
// Provide a Condition
Condition newCondition() {
return new ConditionObject();
}
// Deserialize properly
private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException {
s.defaultReadObject();
setState(0); // reset to unlocked state
}
protected Thread getLockOwner() {
return getExclusiveOwnerThread();
}
}
// The sync object does all the hard work. We just forward to it.
private final Sync sync = new Sync();
public void lock() {
sync.acquire(1);
}
public boolean tryLock() {
return sync.tryAcquire(1);
}
public void unlock() {
sync.release(1);
}
public Condition newCondition() {
return sync.newCondition();
}
public boolean isLocked() {
return sync.isHeldExclusively();
}
public boolean hasQueuedThreads() {
return sync.hasQueuedThreads();
}
public void lockInterruptibly() throws InterruptedException {
sync.acquireInterruptibly(1);
}
public boolean tryLock(long timeout, TimeUnit unit) throws InterruptedException {
return sync.tryAcquireNanos(1, unit.toNanos(timeout));
}
public Thread getLockOwner() {
return sync.getLockOwner();
}
public AbstractOwnableSynchronizer getSync() {
return sync;
}
}
}
public class ValidateOpenTypes {
private static MBeanServer server = ManagementFactory.getPlatformMBeanServer();
private static ObjectName memory;
private static ObjectName thread;
private static ObjectName runtime;
private static ObjectName os;
private static ObjectName heapPool = null;
private static ObjectName nonHeapPool = null;
public static void main(String[] argv) throws Exception {
memory = new ObjectName(MEMORY_MXBEAN_NAME);
runtime = new ObjectName(RUNTIME_MXBEAN_NAME);
thread = new ObjectName(THREAD_MXBEAN_NAME);
os = new ObjectName(OPERATING_SYSTEM_MXBEAN_NAME);
List<MemoryPoolMXBean> pools = getMemoryPoolMXBeans();
for (MemoryPoolMXBean p : pools) {
if (heapPool == null
&& p.getType() == MemoryType.HEAP
&& p.isUsageThresholdSupported()
&& p.isCollectionUsageThresholdSupported()) {
heapPool = new ObjectName(MEMORY_POOL_MXBEAN_DOMAIN_TYPE + ",name=" + p.getName());
}
if (nonHeapPool == null
&& p.getType() == MemoryType.NON_HEAP
&& p.isUsageThresholdSupported()) {
nonHeapPool = new ObjectName(MEMORY_POOL_MXBEAN_DOMAIN_TYPE + ",name=" + p.getName());
}
}
// Check notification emitters
MyListener listener = new MyListener();
server.addNotificationListener(memory, listener, null, null);
server.removeNotificationListener(memory, listener);
checkEnum();
checkList();
checkMap();
checkMemoryUsage();
checkThreadInfo();
checkOS();
checkSunGC();
System.out.println("Test passed.");
}
private static void checkEnum() throws Exception {
String type = (String) server.getAttribute(heapPool, "Type");
if (!type.equals("HEAP")) {
throw new RuntimeException("TEST FAILED: " + " incorrect memory type for " + heapPool);
}
type = (String) server.getAttribute(nonHeapPool, "Type");
if (!type.equals("NON_HEAP")) {
throw new RuntimeException("TEST FAILED: " + " incorrect memory type for " + nonHeapPool);
}
}
private static final String OPTION = "-verbose:gc";
private static void checkList() throws Exception {
String[] args = (String[]) server.getAttribute(runtime, "InputArguments");
if (args.length < 1) {
throw new RuntimeException("TEST FAILED: " + " empty input arguments");
}
// check if -verbose:gc exists
boolean found = false;
for (String option : args) {
if (option.equals(OPTION)) {
found = true;
break;
}
}
if (!found) {
throw new RuntimeException("TEST FAILED: " + "VM option " + OPTION + " not found");
}
}
private static final String KEY1 = "test.property.key1";
private static final String VALUE1 = "test.property.value1";
private static final String KEY2 = "test.property.key2";
private static final String VALUE2 = "test.property.value2";
private static final String KEY3 = "test.property.key3";
private static void checkMap() throws Exception {
// Add new system properties
System.setProperty(KEY1, VALUE1);
System.setProperty(KEY2, VALUE2);
TabularData props1 = (TabularData) server.getAttribute(runtime, "SystemProperties");
String value1 = getProperty(props1, KEY1);
if (value1 == null || !value1.equals(VALUE1)) {
throw new RuntimeException(
"TEST FAILED: "
+ KEY1
+ " property found"
+ " with value = "
+ value1
+ " but expected to be "
+ VALUE1);
}
String value2 = getProperty(props1, KEY2);
if (value2 == null || !value2.equals(VALUE2)) {
throw new RuntimeException(
"TEST FAILED: "
+ KEY2
+ " property found"
+ " with value = "
+ value2
+ " but expected to be "
+ VALUE2);
}
String value3 = getProperty(props1, KEY3);
if (value3 != null) {
throw new RuntimeException(
"TEST FAILED: " + KEY3 + " property found" + " but should not exist");
}
}
private static String getProperty(TabularData td, String propName) {
CompositeData cd = td.get(new Object[] {propName});
if (cd != null) {
String key = (String) cd.get("key");
if (!propName.equals(key)) {
throw new RuntimeException(
"TEST FAILED: " + key + " property found" + " but expected to be " + propName);
}
return (String) cd.get("value");
}
return null;
}
private static void checkMemoryUsage() throws Exception {
// sanity check to have non-zero usage
Object u1 = server.getAttribute(memory, "HeapMemoryUsage");
Object u2 = server.getAttribute(memory, "NonHeapMemoryUsage");
Object u3 = server.getAttribute(heapPool, "Usage");
Object u4 = server.getAttribute(nonHeapPool, "Usage");
if (getCommitted(u1) <= 0
|| getCommitted(u2) <= 0
|| getCommitted(u3) <= 0
|| getCommitted(u4) <= 0) {
throw new RuntimeException("TEST FAILED: " + " expected non-zero committed usage");
}
server.invoke(memory, "gc", new Object[0], new String[0]);
Object u5 = server.getAttribute(heapPool, "CollectionUsage");
if (getCommitted(u5) <= 0) {
throw new RuntimeException("TEST FAILED: " + " expected non-zero committed collected usage");
}
}
private static long getCommitted(Object data) {
MemoryUsage u = MemoryUsage.from((CompositeData) data);
return u.getCommitted();
}
private static void checkThreadInfo() throws Exception {
// assume all threads stay alive
long[] ids = (long[]) server.getAttribute(thread, "AllThreadIds");
Object result = server.invoke(thread, "getThreadInfo", new Object[] {ids}, new String[] {"[J"});
for (CompositeData cd : (CompositeData[]) result) {
printThreadInfo(cd);
}
result =
server.invoke(
thread,
"getThreadInfo",
new Object[] {ids, new Integer(2)},
new String[] {"[J", "int"});
for (CompositeData cd : (CompositeData[]) result) {
printThreadInfo(cd);
}
long id = Thread.currentThread().getId();
result =
server.invoke(thread, "getThreadInfo", new Object[] {new Long(id)}, new String[] {"long"});
printThreadInfo((CompositeData) result);
result =
server.invoke(
thread,
"getThreadInfo",
new Object[] {new Long(id), new Integer(2)},
new String[] {"long", "int"});
printThreadInfo((CompositeData) result);
}
private static void printThreadInfo(CompositeData cd) {
ThreadInfo info = ThreadInfo.from(cd);
if (info == null) {
throw new RuntimeException("TEST FAILED: " + " Null ThreadInfo");
}
System.out.print(info.getThreadName());
System.out.print(" id=" + info.getThreadId());
System.out.println(" " + info.getThreadState());
for (StackTraceElement s : info.getStackTrace()) {
System.out.println(s);
}
}
private static void checkOS() throws Exception {
Integer cpus = (Integer) server.getAttribute(os, "AvailableProcessors");
System.out.println("# CPUs = " + cpus);
Long vmem = (Long) server.getAttribute(os, "CommittedVirtualMemorySize");
System.out.println("Committed virtual memory = " + vmem);
}
private static void checkSunGC() throws Exception {
// Test com.sun.management proxy
List<GarbageCollectorMXBean> gcs = getGarbageCollectorMXBeans();
for (GarbageCollectorMXBean gc : gcs) {
ObjectName sunGc =
new ObjectName(GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE + ",name=" + gc.getName());
CompositeData cd = (CompositeData) server.getAttribute(sunGc, "LastGcInfo");
if (cd != null) {
System.out.println("GC statistic for : " + gc.getName());
printGcInfo(cd);
}
}
}
private static void printGcInfo(CompositeData cd) throws Exception {
GcInfo info = GcInfo.from(cd);
System.out.print("GC #" + info.getId());
System.out.print(" start:" + info.getStartTime());
System.out.print(" end:" + info.getEndTime());
System.out.println(" (" + info.getDuration() + "ms)");
Map<String, MemoryUsage> usage = info.getMemoryUsageBeforeGc();
for (Map.Entry<String, MemoryUsage> entry : usage.entrySet()) {
String poolname = entry.getKey();
MemoryUsage busage = entry.getValue();
MemoryUsage ausage = info.getMemoryUsageAfterGc().get(poolname);
if (ausage == null) {
throw new RuntimeException("After Gc Memory does not exist" + " for " + poolname);
}
System.out.println("Usage for pool " + poolname);
System.out.println(" Before GC: " + busage);
System.out.println(" After GC: " + ausage);
}
}
static class MyListener implements NotificationListener {
public void handleNotification(Notification notif, Object handback) {
return;
}
}
}