Java Code Examples for java.lang.management.LockInfo

private static String threadLockedSynchronizers(ThreadInfo threadInfo) {
  final String NO_SYNCH_INFO = "no locked synchronizers information available\n";
  if (null == threadInfo) { return NO_SYNCH_INFO; }
  try {
    final LockInfo[] lockInfos = threadInfo.getLockedSynchronizers();
    if (lockInfos.length > 0) {
      final StringBuffer lockedSynchBuff = new StringBuffer();
      lockedSynchBuff.append("\nLocked Synchronizers: \n");
      for (final LockInfo lockInfo : lockInfos) {
        lockedSynchBuff.append(lockInfo.getClassName()).append(" <").append(lockInfo.getIdentityHashCode())
            .append("> \n");
      }
      return lockedSynchBuff.append("\n").toString();
    } else {
      return "";
    }
  } catch (final Exception e) {
    return NO_SYNCH_INFO;
  }
}
 

private void initData(Properties props) {
    this.db = new HashMap<String, Map<String, CRDTData<?>>>();
    this.locks = new HashMap<CRDTIdentifier, LockInfo>();
    // this.notifications = new LinkedList<NotificationRecord>();
    this.modified = new HashSet<CRDTData<?>>();

    this.version = ClockFactory.newClock();
    this.cltClock = ClockFactory.newClock();

    initDB(props);

    if (dbServer.ramOnly()) {

        CRDTIdentifier id = new CRDTIdentifier("e", "1");
        ManagedCRDT<IntegerCRDT> i = new ManagedCRDT<IntegerCRDT>(id, new IntegerCRDT(id), version.clone(), true);
        localPutCRDT(i);

        CRDTIdentifier id2 = new CRDTIdentifier("e", "2");
        ManagedCRDT<IntegerCRDT> i2 = new ManagedCRDT<IntegerCRDT>(id2, new IntegerCRDT(id2), version.clone(), true);
        localPutCRDT(i2);
    }
}
 

private static void setLockInfo(TThreadDump threadDump, ThreadInfo threadInfo) {
    threadDump.setLockName(threadInfo.getLockName());
    threadDump.setLockOwnerId(threadInfo.getLockOwnerId());
    threadDump.setLockOwnerName(threadInfo.getLockOwnerName());

    LockInfo[] lockInfos = threadInfo.getLockedSynchronizers();

    if (lockInfos != null) {
        for (LockInfo lockInfo : lockInfos) {
            if (lockInfo == null) {
                continue;
            }
            threadDump.addToLockedSynchronizers(lockInfo.toString());
        }
    } else {
        threadDump.setLockedSynchronizers(Collections.<String>emptyList());
    }
}
 

private @Nonnull JmxRuntime extractRuntime(@Nonnull MBeanServerConnection connection) {
    final List<ThreadInfo> threads = getRemoteThreads(connection);
    HashSet<JmxThread.Builder> builders = new HashSet<JmxThread.Builder>(threads.size());

    for (ThreadInfo thread: threads) {
        JmxThread.Builder builder = new JmxThread.Builder();
        final ThreadStatus status = fillThreadInfoData(thread, builder);

        final LockInfo lockInfo = thread.getLockInfo();
        if (lockInfo != null) {
            builder.setWaitingToLock(getSynchronizer(lockInfo));
        }

        builders.add(builder);
    }

    return new JmxRuntime(builders, new Date(), getVmName(connection));
}
 

@Override
void outputWaitingInfo(ThreadInfo info, ExtraLockInfo exLockInfo, StringBuffer buffer) {
    final LockInfo lock_info = info.getLockInfo();
    if (lock_info != null)
    {
        formatLock(lock_info, "waiting on", buffer);
        if (exLockInfo != null)
        {
            if (exLockInfo.isWaitingFor(ExtraLockInfo.WaitingFor.WRITE, lock_info))
                buffer.append(" for write");
            if (exLockInfo.isWaitingFor(ExtraLockInfo.WaitingFor.READ, lock_info))
                buffer.append(" for read");
        }
        buffer.append(".");
        long lock_owner = info.getLockOwnerId();
        if (lock_owner!=-1)
        {
            buffer.append(" Locked by \"");
            buffer.append(info.getLockOwnerName());
            buffer.append("\" tid=");
            buffer.append(lock_owner);
        }
        buffer.append("\n");
    }
}
 

private static void printLockInfo(LockInfo[] locks, StringBuilder sb) {
    sb.append("\tLocked synchronizers: count = " + locks.length).append("\n");
    for (LockInfo li : locks) {
        sb.append("\t  - " + li).append("\n");
    }
    sb.append("\n");
}
 

private void printLockInfo(LockInfo[] locks, PrintStream out) {
   out.println(INDENT + "Locked synchronizers: count = " + locks.length); // NOI18N
   for (LockInfo li : locks) {
       out.println(INDENT + "  - " + li); // NOI18N
   }
   out.println();
}
 

private static void printLockInfo(LockInfo[] locks, PrintWriter out) {
  out.println(INDENT + "Locked synchronizers: count = " + locks.length);
  for (LockInfo li : locks) {
    out.println(INDENT + "  - " + li);
  }
  out.println();
}
 

/**
 * Prints the thread dump information with locks info to System.out.
 */
private void dumpThreadInfoWithLocks() {
   System.out.println("Full Java thread dump with locks info");

   ThreadInfo[] tinfos = tmbean.dumpAllThreads(true, true);
   for (ThreadInfo ti : tinfos) {
       printThreadInfo(ti);
       LockInfo[] syncs = ti.getLockedSynchronizers();
       printLockInfo(syncs);
   }
   System.out.println();
}
 

private void printLockInfo(LockInfo[] locks) {
   System.out.println(INDENT + "Locked synchronizers: count = " + locks.length);
   for (LockInfo li : locks) {
       System.out.println(INDENT + "  - " + li);
   }
   System.out.println();
}
 

public static CompositeData toCompositeData(LockInfo li) {
    if (li == null) {
        return null;
    }

    LockInfoCompositeData licd = new LockInfoCompositeData(li);
    return licd.getCompositeData();
}
 

public static LockInfo toLockInfo(CompositeData cd) {
    if (cd == null) {
        throw new NullPointerException("Null CompositeData");
    }

    if (!isTypeMatched(lockInfoCompositeType, cd.getCompositeType())) {
        throw new IllegalArgumentException(
            "Unexpected composite type for LockInfo");
    }

    String className = getString(cd, CLASS_NAME);
    int identityHashCode = getInt(cd, IDENTITY_HASH_CODE);
    return new LockInfo(className, identityHashCode);
}
 

Object toOpenTypeData(Object data) throws OpenDataException {
    if (data instanceof MemoryUsage) {
        return MemoryUsageCompositeData.toCompositeData((MemoryUsage) data);
    }

    if (data instanceof ThreadInfo) {
        return ThreadInfoCompositeData.toCompositeData((ThreadInfo) data);
    }

    if (data instanceof LockInfo) {
        if (data instanceof java.lang.management.MonitorInfo) {
            return MonitorInfoCompositeData.toCompositeData((MonitorInfo) data);
        }
        return LockInfoCompositeData.toCompositeData((LockInfo) data);
    }

    if (data instanceof MemoryNotificationInfo) {
        return MemoryNotifInfoCompositeData.
            toCompositeData((MemoryNotificationInfo) data);
    }

    if (data instanceof VMOption) {
        return VMOptionCompositeData.toCompositeData((VMOption) data);
    }

    if (isCompositeData) {
        // Classes that implement CompositeData
        //
        // construct a new CompositeDataSupport object
        // so that no other classes are sent over the wire
        CompositeData cd = (CompositeData) data;
        CompositeType ct = cd.getCompositeType();
        String[] itemNames = ct.keySet().toArray(new String[0]);
        Object[] itemValues = cd.getAll(itemNames);
        return new CompositeDataSupport(ct, itemNames, itemValues);
    }

    throw new OpenDataException(javaClass.getName() +
        " is not supported for platform MXBeans");
}
 

public LockInfo[] lockedSynchronizers() {
    CompositeData[] lockedSyncsData =
        (CompositeData[]) cdata.get(LOCKED_SYNCS);

    // The LockedSynchronizers item cannot be null, but if it is we will
    // get a NullPointerException when we ask for its length.
    LockInfo[] locks = new LockInfo[lockedSyncsData.length];
    for (int i = 0; i < lockedSyncsData.length; i++) {
        CompositeData cdi = lockedSyncsData[i];
        locks[i] = LockInfo.from(cdi);
    }
    return locks;
}
 

private String generateThreadStack(ThreadInfo info) {
  // This is annoying, but the to string method on info sucks.
  StringBuilder result = new StringBuilder();
  result.append(info.getThreadName()).append(" ID=0x")
      .append(Long.toHexString(info.getThreadId())).append("(").append(info.getThreadId())
      .append(") state=").append(info.getThreadState());


  if (info.getLockInfo() != null) {
    result.append("\n\twaiting to lock <" + info.getLockInfo() + ">");
  }
  for (StackTraceElement element : info.getStackTrace()) {
    result.append("\n\tat " + element);
    for (MonitorInfo monitor : info.getLockedMonitors()) {
      if (element.equals(monitor.getLockedStackFrame())) {
        result.append("\n\tlocked <" + monitor + ">");
      }
    }
  }

  if (info.getLockedSynchronizers().length > 0) {
    result.append("\nLocked synchronizers:");
    for (LockInfo sync : info.getLockedSynchronizers()) {
      result.append(
          "\n" + sync.getClassName() + "@" + Integer.toHexString(sync.getIdentityHashCode()));

    }
  }

  return result.toString();
}
 

public LocalLockInfo(Serializable locatility, LockInfo sync) {
  super();
  this.locatility = locatility;
  // LockInfo and Monitor info aren't serializable, so copy the information from
  // them. For backwards compatibility, use the LI class which is used
  // in older versions of gemfire.
  if (sync instanceof MonitorInfo) {
    this.info = new LI(sync.getClassName(), sync.getIdentityHashCode(),
        ((MonitorInfo) sync).getLockedStackFrame());
  } else {
    this.info = new LI(sync.getClassName(), sync.getIdentityHashCode());
  }
}
 

private static void printLockInfo(LockInfo[] locks, PrintWriter out) {
  out.println(INDENT + "Locked synchronizers: count = " + locks.length);
  for (LockInfo li : locks) {
    out.println(INDENT + "  - " + li);
  }
  out.println();
}
 

/**
 * Prints the thread dump information with locks info to System.out.
 */
private void dumpThreadInfoWithLocks() {
   System.out.println("Full Java thread dump with locks info");

   ThreadInfo[] tinfos = tmbean.dumpAllThreads(true, true);
   for (ThreadInfo ti : tinfos) {
       printThreadInfo(ti);
       LockInfo[] syncs = ti.getLockedSynchronizers();
       printLockInfo(syncs);
   }
   System.out.println();
}
 

private void printLockInfo(LockInfo[] locks) {
   System.out.println(INDENT + "Locked synchronizers: count = " + locks.length);
   for (LockInfo li : locks) {
       System.out.println(INDENT + "  - " + li);
   }
   System.out.println();
}
 

public static CompositeData toCompositeData(LockInfo li) {
    if (li == null) {
        return null;
    }

    LockInfoCompositeData licd = new LockInfoCompositeData(li);
    return licd.getCompositeData();
}
 

public static LockInfo toLockInfo(CompositeData cd) {
    if (cd == null) {
        throw new NullPointerException("Null CompositeData");
    }

    if (!isTypeMatched(lockInfoCompositeType, cd.getCompositeType())) {
        throw new IllegalArgumentException(
            "Unexpected composite type for LockInfo");
    }

    String className = getString(cd, CLASS_NAME);
    int identityHashCode = getInt(cd, IDENTITY_HASH_CODE);
    return new LockInfo(className, identityHashCode);
}
 

Object toOpenTypeData(Object data) throws OpenDataException {
    if (data instanceof MemoryUsage) {
        return MemoryUsageCompositeData.toCompositeData((MemoryUsage) data);
    }

    if (data instanceof ThreadInfo) {
        return ThreadInfoCompositeData.toCompositeData((ThreadInfo) data);
    }

    if (data instanceof LockInfo) {
        if (data instanceof java.lang.management.MonitorInfo) {
            return MonitorInfoCompositeData.toCompositeData((MonitorInfo) data);
        }
        return LockInfoCompositeData.toCompositeData((LockInfo) data);
    }

    if (data instanceof MemoryNotificationInfo) {
        return MemoryNotifInfoCompositeData.
            toCompositeData((MemoryNotificationInfo) data);
    }

    if (data instanceof VMOption) {
        return VMOptionCompositeData.toCompositeData((VMOption) data);
    }

    if (isCompositeData) {
        // Classes that implement CompositeData
        //
        // construct a new CompositeDataSupport object
        // so that no other classes are sent over the wire
        CompositeData cd = (CompositeData) data;
        CompositeType ct = cd.getCompositeType();
        String[] itemNames = ct.keySet().toArray(new String[0]);
        Object[] itemValues = cd.getAll(itemNames);
        return new CompositeDataSupport(ct, itemNames, itemValues);
    }

    throw new OpenDataException(javaClass.getName() +
        " is not supported for platform MXBeans");
}
 

public LockInfo[] lockedSynchronizers() {
    CompositeData[] lockedSyncsData =
        (CompositeData[]) cdata.get(LOCKED_SYNCS);

    // The LockedSynchronizers item cannot be null, but if it is we will
    // get a NullPointerException when we ask for its length.
    LockInfo[] locks = new LockInfo[lockedSyncsData.length];
    for (int i = 0; i < lockedSyncsData.length; i++) {
        CompositeData cdi = lockedSyncsData[i];
        locks[i] = LockInfo.from(cdi);
    }
    return locks;
}
 

private static void checkLockInfo(LockInfo li)
    throws Exception {
    if (!li.getClassName().equals(lockInfo.getClassName())) {
        throw new RuntimeException("Class Name = " +
            li.getClassName() + " expected = " + lockInfo.getClassName());
    }
    if (li.getIdentityHashCode() != lockInfo.getIdentityHashCode()) {
        throw new RuntimeException("Class Name = " +
            li.getIdentityHashCode() + " expected = " +
            lockInfo.getIdentityHashCode());
    }
}
 

public static CompositeData toCompositeData(LockInfo li) {
    if (li == null) {
        return null;
    }

    LockInfoCompositeData licd = new LockInfoCompositeData(li);
    return licd.getCompositeData();
}
 

public static LockInfo toLockInfo(CompositeData cd) {
    if (cd == null) {
        throw new NullPointerException("Null CompositeData");
    }

    if (!isTypeMatched(lockInfoCompositeType, cd.getCompositeType())) {
        throw new IllegalArgumentException(
            "Unexpected composite type for LockInfo");
    }

    String className = getString(cd, CLASS_NAME);
    int identityHashCode = getInt(cd, IDENTITY_HASH_CODE);
    return new LockInfo(className, identityHashCode);
}
 

public LockInfo[] lockedSynchronizers() {
    CompositeData[] lockedSyncsData =
        (CompositeData[]) cdata.get(LOCKED_SYNCS);

    // The LockedSynchronizers item cannot be null, but if it is we will
    // get a NullPointerException when we ask for its length.
    LockInfo[] locks = new LockInfo[lockedSyncsData.length];
    for (int i = 0; i < lockedSyncsData.length; i++) {
        CompositeData cdi = lockedSyncsData[i];
        locks[i] = LockInfo.from(cdi);
    }
    return locks;
}
 

private static void checkLockInfo(LockInfo li)
    throws Exception {
    if (!li.getClassName().equals(lockInfo.getClassName())) {
        throw new RuntimeException("Class Name = " +
            li.getClassName() + " expected = " + lockInfo.getClassName());
    }
    if (li.getIdentityHashCode() != lockInfo.getIdentityHashCode()) {
        throw new RuntimeException("Class Name = " +
            li.getIdentityHashCode() + " expected = " +
            lockInfo.getIdentityHashCode());
    }
}
 

/**
 * Formats the thread dump for one thread.
 *
 * @param ti
 *            the ThreadInfo describing the thread
 * @return the formatted thread dump
 */
private static String getThreadDump(ThreadInfo ti) {
	StringBuilder sb = new StringBuilder(getThreadDumpHeader(ti));
	for (LockInfo li : ti.getLockedSynchronizers()) {
		sb.append(INDENT2 + "locks " + li.toString() + CRLF);
	}
	boolean start = true;
	StackTraceElement[] stes = ti.getStackTrace();
	Object[] monitorDepths = new Object[stes.length];
	MonitorInfo[] mis = ti.getLockedMonitors();
	for (int i = 0; i < mis.length; i++) {
		monitorDepths[mis[i].getLockedStackDepth()] = mis[i];
	}
	for (int i = 0; i < stes.length; i++) {
		StackTraceElement ste = stes[i];
		sb.append(INDENT2 + "at " + ste.toString() + CRLF);
		if (start) {
			if (ti.getLockName() != null) {
				sb.append(INDENT2 + "- waiting on (a " + ti.getLockName() + ")");
				if (ti.getLockOwnerName() != null) {
					sb.append(" owned by " + ti.getLockOwnerName() + " Id=" + ti.getLockOwnerId());
				}
				sb.append(CRLF);
			}
			start = false;
		}
		if (monitorDepths[i] != null) {
			MonitorInfo mi = (MonitorInfo) monitorDepths[i];
			sb.append(INDENT2 + "- locked (a " + mi.toString() + ")" + " index " + mi.getLockedStackDepth()
					+ " frame " + mi.getLockedStackFrame().toString());
			sb.append(CRLF);

		}
	}
	return sb.toString();
}
 

private static void printLockInfo(LockInfo[] locks, PrintWriter out) {
  out.println(INDENT + "Locked synchronizers: count = " + locks.length);
  for (LockInfo li : locks) {
    out.println(INDENT + "  - " + li);
  }
  out.println();
}
 

/**
 * Prints the thread dump information with locks info to System.out.
 */
private void dumpThreadInfoWithLocks() {
   System.out.println("Full Java thread dump with locks info");

   ThreadInfo[] tinfos = tmbean.dumpAllThreads(true, true);
   for (ThreadInfo ti : tinfos) {
       printThreadInfo(ti);
       LockInfo[] syncs = ti.getLockedSynchronizers();
       printLockInfo(syncs);
   }
   System.out.println();
}
 

private void printLockInfo(LockInfo[] locks) {
   System.out.println(INDENT + "Locked synchronizers: count = " + locks.length);
   for (LockInfo li : locks) {
       System.out.println(INDENT + "  - " + li);
   }
   System.out.println();
}
 

public static CompositeData toCompositeData(LockInfo li) {
    if (li == null) {
        return null;
    }

    LockInfoCompositeData licd = new LockInfoCompositeData(li);
    return licd.getCompositeData();
}
 

public static LockInfo toLockInfo(CompositeData cd) {
    if (cd == null) {
        throw new NullPointerException("Null CompositeData");
    }

    if (!isTypeMatched(lockInfoCompositeType, cd.getCompositeType())) {
        throw new IllegalArgumentException(
            "Unexpected composite type for LockInfo");
    }

    String className = getString(cd, CLASS_NAME);
    int identityHashCode = getInt(cd, IDENTITY_HASH_CODE);
    return new LockInfo(className, identityHashCode);
}
 

public LockInfo[] lockedSynchronizers() {
    CompositeData[] lockedSyncsData =
        (CompositeData[]) cdata.get(LOCKED_SYNCS);

    // The LockedSynchronizers item cannot be null, but if it is we will
    // get a NullPointerException when we ask for its length.
    LockInfo[] locks = new LockInfo[lockedSyncsData.length];
    for (int i = 0; i < lockedSyncsData.length; i++) {
        CompositeData cdi = lockedSyncsData[i];
        locks[i] = LockInfo.from(cdi);
    }
    return locks;
}
 

private static void checkLockInfo(LockInfo li)
    throws Exception {
    if (!li.getClassName().equals(lockInfo.getClassName())) {
        throw new RuntimeException("Class Name = " +
            li.getClassName() + " expected = " + lockInfo.getClassName());
    }
    if (li.getIdentityHashCode() != lockInfo.getIdentityHashCode()) {
        throw new RuntimeException("Class Name = " +
            li.getIdentityHashCode() + " expected = " +
            lockInfo.getIdentityHashCode());
    }
}
 

private static void printLockInfo(LockInfo[] locks, PrintWriter out) {
  out.println(INDENT + "Locked synchronizers: count = " + locks.length);
  for (LockInfo li : locks) {
    out.println(INDENT + "  - " + li);
  }
  out.println();
}
 

public static CharSequence getThreadStats(boolean lockedMonitors, boolean lockedSynchronizers, boolean stackTrace)
{
	StringBuilder list = new StringBuilder();

	for(ThreadInfo info : threadMXbean.dumpAllThreads(lockedMonitors, lockedSynchronizers))
	{
		list.append("Thread #").append(info.getThreadId()).append(" (").append(info.getThreadName()).append(")").append("\n");
		list.append("=================================================\n");
		list.append("\tgetThreadState: ...... ").append(info.getThreadState()).append("\n");
		for(MonitorInfo monitorInfo : info.getLockedMonitors())
		{
			list.append("\tLocked monitor: ....... ").append(monitorInfo).append("\n");
			list.append("\t\t[").append(monitorInfo.getLockedStackDepth()).append(".]: at ").append(monitorInfo.getLockedStackFrame()).append("\n");
		}

		for(LockInfo lockInfo : info.getLockedSynchronizers())
			list.append("\tLocked synchronizer: ...").append(lockInfo).append("\n");

		if(stackTrace)
		{
			list.append("\tgetStackTace: ..........\n");
			for(StackTraceElement trace : info.getStackTrace())
				list.append("\t\tat ").append(trace).append("\n");
		}
		list.append("=================================================\n");
	}

	return list;
}
 

@Override
public LI[] getLockedSynchronizers(ThreadInfo info) {
  LockInfo[] monitors = info.getLockedSynchronizers();
  if(monitors == null) {
    return null;
  }
  LI[] results = new LI[monitors.length];
  for(int i = 0; i < monitors.length; i++) {
    results[i] = new LI(monitors[i].getClassName(), monitors[i].getIdentityHashCode());
  }
  return results;
}
 

@Override
public LI getLockInfo(ThreadInfo threadInfo) {
  LockInfo lockInfo= threadInfo.getLockInfo();
  if(lockInfo == null) {
    return null;
  }
  
  return new LI(lockInfo.getClassName(), lockInfo.getIdentityHashCode());
}