Java Code Examples for java.lang.management.ThreadInfo#getThreadState()

private void dumpStateWhileWaiting( long lWait ) throws InterruptedException
{
    // wait for the daemon to have a chance to try running
    Thread.sleep( lWait );
    final StringBuilder dump = new StringBuilder( );
    final ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean( );
    final ThreadInfo[ ] threadInfos = threadMXBean.getThreadInfo( threadMXBean.getAllThreadIds( ), 100 );
    for ( ThreadInfo threadInfo : threadInfos )
    {
        dump.append( '"' );
        dump.append( threadInfo.getThreadName( ) );
        dump.append( "\" " );
        final Thread.State state = threadInfo.getThreadState( );
        dump.append( "\n   java.lang.Thread.State: " );
        dump.append( state );
        final StackTraceElement[ ] stackTraceElements = threadInfo.getStackTrace( );
        for ( final StackTraceElement stackTraceElement : stackTraceElements )
        {
            dump.append( "\n        at " );
            dump.append( stackTraceElement );
        }
        dump.append( "\n\n" );
    }
    AppLogService.info( "Current state : " + dump );
}
 

public static Byte[] getState(ThreadInfo info) {
    byte[] bitmap = new byte[] {(byte)0x00, (byte)0x00};
    try {
        final Thread.State state = info.getThreadState();
        final boolean inNative  = info.isInNative();
        final boolean suspended = info.isSuspended();
        log.debug("getJvmThreadInstState",
                  "[State=" + state +
                  ",isInNative=" + inNative +
                  ",isSuspended=" + suspended + "]");
        setState(bitmap,state);
        if (inNative)  setNative(bitmap);
        if (suspended) setSuspended(bitmap);
        checkOther(bitmap);
    } catch (RuntimeException r) {
        bitmap[0]=(byte)0x00;
        bitmap[1]=Byte1.other;
        log.trace("getJvmThreadInstState",
                  "Unexpected exception: " + r);
        log.debug("getJvmThreadInstState",r);
    }
    Byte[] result = { new Byte(bitmap[0]), new Byte(bitmap[1]) };
    return result;
}
 

private static void checkSuspendedThreadState(ThreadStateController t, Thread.State state) {
    ThreadInfo info = getThreadInfo(t, state);
    if (info == null) {
        throw new RuntimeException(t.getName() +
           " expected to have ThreadInfo " +
           " but got null.");
    }

    if (info.getThreadState() != state) {
        throw new RuntimeException(t.getName() + " expected to be in " +
            state + " state but got " + info.getThreadState());
    }

    if (!info.isSuspended()) {
        throw new RuntimeException(t.getName() + " expected to be suspended " +
            " but isSuspended() returns " + info.isSuspended());
    }
}
 

private void printThread(ThreadInfo ti) {
   StringBuilder sb = new StringBuilder("\"" + ti.getThreadName() + "\"" +
                                        " Id=" + ti.getThreadId() +
                                        " in " + ti.getThreadState());
   if (ti.getLockName() != null) {
       sb.append(" on lock=" + ti.getLockName());
   }
   if (ti.isSuspended()) {
       sb.append(" (suspended)");
   }
   if (ti.isInNative()) {
       sb.append(" (running in native)");
   }
   System.out.println(sb.toString());
   if (ti.getLockOwnerName() != null) {
        System.out.println(INDENT + " owned by " + ti.getLockOwnerName() +
                           " Id=" + ti.getLockOwnerId());
   }
}
 

private void printThread(ThreadInfo ti) {
   StringBuilder sb = new StringBuilder("\"" + ti.getThreadName() + "\"" +
                                        " Id=" + ti.getThreadId() +
                                        " in " + ti.getThreadState());
   if (ti.getLockName() != null) {
       sb.append(" on lock=" + ti.getLockName());
   }
   if (ti.isSuspended()) {
       sb.append(" (suspended)");
   }
   if (ti.isInNative()) {
       sb.append(" (running in native)");
   }
   System.out.println(sb.toString());
   if (ti.getLockOwnerName() != null) {
        System.out.println(INDENT + " owned by " + ti.getLockOwnerName() +
                           " Id=" + ti.getLockOwnerId());
   }
}
 

private static void checkSuspendedThreadState(ThreadStateController t, Thread.State state) {
    ThreadInfo info = getThreadInfo(t, state);
    if (info == null) {
        throw new RuntimeException(t.getName() +
           " expected to have ThreadInfo " +
           " but got null.");
    }

    if (info.getThreadState() != state) {
        throw new RuntimeException(t.getName() + " expected to be in " +
            state + " state but got " + info.getThreadState());
    }

    if (!info.isSuspended()) {
        throw new RuntimeException(t.getName() + " expected to be suspended " +
            " but isSuspended() returns " + info.isSuspended());
    }
}
 

private static void checkSuspendedThreadState(ThreadStateController t, Thread.State state) {
    ThreadInfo info = getThreadInfo(t, state);
    if (info == null) {
        throw new RuntimeException(t.getName() +
           " expected to have ThreadInfo " +
           " but got null.");
    }

    if (info.getThreadState() != state) {
        throw new RuntimeException(t.getName() + " expected to be in " +
            state + " state but got " + info.getThreadState());
    }

    if (!info.isSuspended()) {
        throw new RuntimeException(t.getName() + " expected to be suspended " +
            " but isSuspended() returns " + info.isSuspended());
    }
}
 

public static void dumpAllThreads() {
    final StringBuilder dump = new StringBuilder();
    final ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
    final ThreadInfo[] threadInfos = threadMXBean.getThreadInfo(threadMXBean.getAllThreadIds(), 100);
    for (ThreadInfo threadInfo : threadInfos) {
        dump.append('"');
        dump.append(threadInfo.getThreadName());
        dump.append("\" ");
        final Thread.State state = threadInfo.getThreadState();
        dump.append("\n   java.lang.Thread.State: ");
        dump.append(state);
        final StackTraceElement[] stackTraceElements = threadInfo.getStackTrace();
        for (final StackTraceElement stackTraceElement : stackTraceElements) {
            dump.append("\n        at ");
            dump.append(stackTraceElement);
        }
        dump.append("\n\n");
    }

    logger.debug(dump.toString());
}
 

private long getThreadStateCount(ThreadMXBean threadBean, Thread.State state) {
    int count = 0;
    for (ThreadInfo threadInfo : threadBean.getThreadInfo(threadBean.getAllThreadIds())) {
        if (threadInfo != null && threadInfo.getThreadState() == state) {
            count++;
        }
    }
    return count;
}
 

private static ThreadInfo getThreadInfo(ThreadStateController t, Thread.State expected) {
    // wait for the thread to transition to the expected state.
    // There is a small window between the thread checking the state
    // and the thread actual entering that state.
    int retryCount=0;
    ThreadInfo info = tm.getThreadInfo(t.getId());
    while (info.getThreadState() != expected && retryCount < MAX_RETRY) {
        ThreadStateController.pause(10);
        retryCount++;
        info = tm.getThreadInfo(t.getId());
    }
    return info;
}
 

private static ThreadInfo getThreadInfo(ThreadStateController t, Thread.State expected) {
    // wait for the thread to transition to the expected state.
    // There is a small window between the thread checking the state
    // and the thread actual entering that state.
    int retryCount=0;
    ThreadInfo info = tm.getThreadInfo(t.getId());
    while (info.getThreadState() != expected && retryCount < MAX_RETRY) {
        ThreadStateController.pause(10);
        retryCount++;
        info = tm.getThreadInfo(t.getId());
    }
    return info;
}
 

/**
 * Print all of the thread's information and stack traces.
 * 
 * @param sb
 * @param info
 * @param indent
 */
public static void appendThreadInfo(StringBuilder sb,
                                    ThreadInfo info,
                                    String indent) {
  boolean contention = threadBean.isThreadContentionMonitoringEnabled();

  if (info == null) {
    sb.append(indent).append("Inactive (perhaps exited while monitoring was done)\n");
    return;
  }
  String taskName = getTaskName(info.getThreadId(), info.getThreadName());
  sb.append(indent).append("Thread ").append(taskName).append(":\n");
  
  Thread.State state = info.getThreadState();
  sb.append(indent).append("  State: ").append(state).append("\n");
  sb.append(indent).append("  Blocked count: ").append(info.getBlockedCount()).append("\n");
  sb.append(indent).append("  Waited count: ").append(info.getWaitedCount()).append("\n");
  if (contention) {
    sb.append(indent).append("  Blocked time: " + info.getBlockedTime()).append("\n");
    sb.append(indent).append("  Waited time: " + info.getWaitedTime()).append("\n");
  }
  if (state == Thread.State.WAITING) {
    sb.append(indent).append("  Waiting on ").append(info.getLockName()).append("\n");
  } else  if (state == Thread.State.BLOCKED) {
    sb.append(indent).append("  Blocked on ").append(info.getLockName()).append("\n");
    sb.append(indent).append("  Blocked by ").append(
      getTaskName(info.getLockOwnerId(), info.getLockOwnerName())).append("\n");
  }
  sb.append(indent).append("  Stack:").append("\n");
  for (StackTraceElement frame: info.getStackTrace()) {
    sb.append(indent).append("    ").append(frame.toString()).append("\n");
  }
}
 

private String getThreadState(ThreadInfo t) {
    StringBuilder sb = new StringBuilder();

    LockInfo lock = t.getLockInfo();
    if (lock != null && t.getThreadState() != BLOCKED) {
        sb.append(format("%n    - waiting on <0x%08x> (a %s)", lock.getIdentityHashCode(), lock.getClassName()));
        sb.append(format("%n    - locked <0x%08x> (a %s)", lock.getIdentityHashCode(), lock.getClassName()));
    } else if (lock != null && t.getThreadState() == BLOCKED) {
        sb.append(format("%n    - waiting to lock <0x%08x> (a %s)", lock.getIdentityHashCode(), lock.getClassName()));
    }

    return sb.toString();
}
 

/**
 * Gets threads count with a given name.
 */
private static int threadsCount(String name) {
    int cnt = 0;

    long[] threadIds = U.getThreadMx().getAllThreadIds();

    for (long id : threadIds) {
        ThreadInfo info = U.getThreadMx().getThreadInfo(id);

        if (info != null && info.getThreadState() != Thread.State.TERMINATED && info.getThreadName().startsWith(name))
            cnt++;
    }

    return cnt;
}
 

private static ThreadInfo getThreadInfo(ThreadStateController t, Thread.State expected) {
    // wait for the thread to transition to the expected state.
    // There is a small window between the thread checking the state
    // and the thread actual entering that state.
    int retryCount=0;
    ThreadInfo info = tm.getThreadInfo(t.getId());
    while (info.getThreadState() != expected && retryCount < MAX_RETRY) {
        ThreadStateController.pause(10);
        retryCount++;
        info = tm.getThreadInfo(t.getId());
    }
    return info;
}
 

static void checkThreadInfo(ThreadInfo info) throws Exception {
    if (info.getThreadId() != ((Long) values[THREAD_ID]).longValue()) {
        throw new RuntimeException("Thread Id = " + info.getThreadId() +
           " expected = " + values[THREAD_ID]);
    }
    if (!info.getThreadName().equals(values[THREAD_NAME])) {
        throw new RuntimeException("Thread Name = " +
           info.getThreadName() + " expected = " + values[THREAD_NAME]);
    }
    if (info.getThreadState() != Thread.State.RUNNABLE) {
        throw new RuntimeException("Thread Name = " +
           info.getThreadName() + " expected = " + Thread.State.RUNNABLE);
    }
    if (info.getBlockedTime() != ((Long) values[BLOCKED_TIME]).longValue()) {
        throw new RuntimeException("blocked time = " +
           info.getBlockedTime() +
           " expected = " + values[BLOCKED_TIME]);
    }
    if (info.getBlockedCount() != ((Long) values[BLOCKED_COUNT]).longValue()) {
        throw new RuntimeException("blocked count = " +
           info.getBlockedCount() +
           " expected = " + values[BLOCKED_COUNT]);
    }
    if (info.getWaitedTime() != ((Long) values[WAITED_TIME]).longValue()) {
        throw new RuntimeException("waited time = " +
           info.getWaitedTime() +
           " expected = " + values[WAITED_TIME]);
    }
    if (info.getWaitedCount() != ((Long) values[WAITED_COUNT]).longValue()) {
        throw new RuntimeException("waited count = " +
           info.getWaitedCount() +
           " expected = " + values[WAITED_COUNT]);
    }
    if (!info.getLockName().equals(values[LOCK_NAME])) {
        throw new RuntimeException("Lock Name = " +
           info.getLockName() + " expected = " + values[LOCK_NAME]);
    }
    if (info.getLockOwnerId() !=
            ((Long) values[LOCK_OWNER_ID]).longValue()) {
        throw new RuntimeException(
           "LockOwner Id = " + info.getLockOwnerId() +
           " expected = " + values[LOCK_OWNER_ID]);
    }
    if (!info.getLockOwnerName().equals(values[LOCK_OWNER_NAME])) {
        throw new RuntimeException("LockOwner Name = " +
           info.getLockOwnerName() + " expected = " +
           values[LOCK_OWNER_NAME]);
    }

    checkStackTrace(info.getStackTrace());

    checkLockInfo(info.getLockInfo());
}
 

private static CharSequence toString(ThreadInfo threadInfo) {
	StringBuilder sb = new StringBuilder("\"" + threadInfo.getThreadName() + "\"" + " Id=" + threadInfo.getThreadId() + " " + threadInfo.getThreadState());
	if (threadInfo.getLockName() != null) {
		sb.append(" on " + threadInfo.getLockName());
	}
	if (threadInfo.getLockOwnerName() != null) {
		sb.append(" owned by \"" + threadInfo.getLockOwnerName() + "\" Id=" + threadInfo.getLockOwnerId());
	}
	if (threadInfo.isSuspended()) {
		sb.append(" (suspended)");
	}
	if (threadInfo.isInNative()) {
		sb.append(" (in native)");
	}
	sb.append('\n');
	StackTraceElement[] stackTrace = threadInfo.getStackTrace();
	int i = 0;
	for (; i < stackTrace.length; i++) {
		StackTraceElement ste = stackTrace[i];
		sb.append("\tat " + ste.toString());
		sb.append('\n');
		if (i == 0 && threadInfo.getLockInfo() != null) {
			Thread.State ts = threadInfo.getThreadState();
			switch (ts) {
			case BLOCKED:
				sb.append("\t-  blocked on " + threadInfo.getLockInfo());
				sb.append('\n');
				break;
			case WAITING:
				sb.append("\t-  waiting on " + threadInfo.getLockInfo());
				sb.append('\n');
				break;
			case TIMED_WAITING:
				sb.append("\t-  waiting on " + threadInfo.getLockInfo());
				sb.append('\n');
				break;
			default:
			}
		}

		for (MonitorInfo mi : threadInfo.getLockedMonitors()) {
			if (mi.getLockedStackDepth() == i) {
				sb.append("\t-  locked " + mi);
				sb.append('\n');
			}
		}
	}
	LockInfo[] locks = threadInfo.getLockedSynchronizers();
	if (locks.length > 0) {
		sb.append("\n\tNumber of locked synchronizers = " + locks.length);
		sb.append('\n');
		for (LockInfo li : locks) {
			sb.append("\t- " + li);
			sb.append('\n');
		}
	}
	sb.append('\n');
	return sb;
}
 

private static void checkLockInfo(ThreadStateController t, Thread.State state,
                                  Object lock, Thread owner) {
    ThreadInfo info = getThreadInfo(t, state);
    if (info == null) {
        throw new RuntimeException(t.getName() +
           " expected to have ThreadInfo " +
           " but got null.");
    }

    if (info.getThreadState() != state) {
        throw new RuntimeException(t.getName() + " expected to be in " +
            state + " state but got " + info.getThreadState());
    }

    if (lock == null && info.getLockName() != null) {
        throw new RuntimeException(t.getName() +
            " expected not to be blocked on any lock" +
            " but got " + info.getLockName());
    }
    String expectedLockName = getLockName(lock);
    if (lock != null && info.getLockName() == null) {
        throw new RuntimeException(t.getName() +
            " expected to be blocked on lock [" + expectedLockName +
            "] but got null.");
    }

    if (lock != null && !expectedLockName.equals(info.getLockName())) {
        throw new RuntimeException(t.getName() +
            " expected to be blocked on lock [" + expectedLockName +
            "] but got [" + info.getLockName() + "].");
    }

    if (owner == null && info.getLockOwnerName() != null) {
        throw new RuntimeException("Lock owner is expected " +
            " to be null but got " + info.getLockOwnerName());
    }

    if (owner != null && info.getLockOwnerName() == null) {
        throw new RuntimeException("Lock owner is expected to be " +
            owner.getName() +
            " but got null.");
    }
    if (owner != null && !info.getLockOwnerName().equals(owner.getName())) {
        throw new RuntimeException("Lock owner is expected to be " +
            owner.getName() +
            " but got " + owner.getName());
    }
    if (owner == null && info.getLockOwnerId() != -1) {
        throw new RuntimeException("Lock owner is expected " +
            " to be -1 but got " + info.getLockOwnerId());
    }

    if (owner != null && info.getLockOwnerId() <= 0) {
        throw new RuntimeException("Lock owner is expected to be " +
            owner.getName() + "(id = " + owner.getId() +
            ") but got " + info.getLockOwnerId());
    }
    if (owner != null && info.getLockOwnerId() != owner.getId()) {
        throw new RuntimeException("Lock owner is expected to be " +
            owner.getName() + "(id = " + owner.getId() +
            ") but got " + info.getLockOwnerId());
    }
    if (info.isSuspended()) {
        throw new RuntimeException(t.getName() +
            " isSuspended() returns " + info.isSuspended());
    }
}
 

@Override
public String printServerState() {
	final long ONE_MB = 1024 * 1024;
	String newLine = "\n";
	StringBuilder result = new StringBuilder();

	try {
		// 空闲内存
		long freeMemory = Runtime.getRuntime().freeMemory() / ONE_MB;
		// 当前内存
		long totalMemory = Runtime.getRuntime().totalMemory() / ONE_MB;
		// 最大可使用内存
		long maxMemory = Runtime.getRuntime().maxMemory() / ONE_MB;
		result.append(String.format("freeMemory: %s mb", freeMemory)).append(newLine);
		result.append(String.format(String.format("usedMemory: %s mb", (totalMemory - freeMemory)))).append(newLine);
		result.append(String.format("totalMemory: %s mb", totalMemory)).append(newLine);
		result.append(String.format("maxMemory: %s mb", maxMemory)).append(newLine);

		MemoryMXBean memoryMXBean = getMemoryMXBean();
		result.append(String.format("heap memory used: %s mb", memoryMXBean.getHeapMemoryUsage().getUsed() / ONE_MB)).append(newLine);
		result.append(String.format("heap memory usage: %s", memoryMXBean.getHeapMemoryUsage())).append(newLine);
		result.append(String.format("nonHeap memory usage: %s", memoryMXBean.getNonHeapMemoryUsage())).append(newLine);

		List<BufferPoolMXBean> buffMXBeans = (List<BufferPoolMXBean>) getPlatformMXBeans(BufferPoolMXBean.class);
		for (BufferPoolMXBean buffMXBean : buffMXBeans) {
			result.append(String.format("buffer pool[%s]: used %s mb, total %s mb", buffMXBean.getName(),
						buffMXBean.getMemoryUsed() / ONE_MB, buffMXBean.getTotalCapacity() / ONE_MB)).append(newLine);
		}

		List<GarbageCollectorMXBean> gcMXBeans = getGarbageCollectorMXBeans();
		for (GarbageCollectorMXBean gcBean : gcMXBeans) {
			result.append(String.format("%s 发生 %s 次 gc, gc 总共消耗 %s 毫秒", gcBean.getName(), gcBean.getCollectionCount(), gcBean.getCollectionTime())).append(newLine);
		}

		ThreadMXBean threadMXBean = getThreadMXBean();
		int nThreadRun     = 0;
		int nThreadBlocked = 0;
		int nThreadWaiting  = 0;
		for (long threadId : threadMXBean.getAllThreadIds()) {
			ThreadInfo threadInfo = threadMXBean.getThreadInfo(threadId);
			if (threadInfo.getThreadState() == Thread.State.RUNNABLE) {
				nThreadRun++;
			}
			if (threadInfo.getThreadState() == Thread.State.BLOCKED) {
				nThreadBlocked++;
			}
			if (threadInfo.getThreadState() == Thread.State.WAITING) {
				nThreadWaiting++;
			}
		}
		result.append(String.format("活跃线程数 %s, 阻塞线程数 %s, 等待线程数 %s", nThreadRun, nThreadBlocked, nThreadWaiting)).append(newLine);

	} catch (Exception e) {
		LoggerUtils.error("", e);
	}

	return result.toString();
}
 

static void checkThreadInfo(ThreadInfo info) throws Exception {
    if (info.getThreadId() != ((Long) values[THREAD_ID]).longValue()) {
        throw new RuntimeException("Thread Id = " + info.getThreadId() +
           " expected = " + values[THREAD_ID]);
    }
    if (!info.getThreadName().equals(values[THREAD_NAME])) {
        throw new RuntimeException("Thread Name = " +
           info.getThreadName() + " expected = " + values[THREAD_NAME]);
    }
    if (info.getThreadState() != Thread.State.RUNNABLE) {
        throw new RuntimeException("Thread Name = " +
           info.getThreadName() + " expected = " + Thread.State.RUNNABLE);
    }
    if (info.getBlockedTime() != ((Long) values[BLOCKED_TIME]).longValue()) {
        throw new RuntimeException("blocked time = " +
           info.getBlockedTime() +
           " expected = " + values[BLOCKED_TIME]);
    }
    if (info.getBlockedCount() != ((Long) values[BLOCKED_COUNT]).longValue()) {
        throw new RuntimeException("blocked count = " +
           info.getBlockedCount() +
           " expected = " + values[BLOCKED_COUNT]);
    }
    if (info.getWaitedTime() != ((Long) values[WAITED_TIME]).longValue()) {
        throw new RuntimeException("waited time = " +
           info.getWaitedTime() +
           " expected = " + values[WAITED_TIME]);
    }
    if (info.getWaitedCount() != ((Long) values[WAITED_COUNT]).longValue()) {
        throw new RuntimeException("waited count = " +
           info.getWaitedCount() +
           " expected = " + values[WAITED_COUNT]);
    }
    if (!info.getLockName().equals(values[LOCK_NAME])) {
        throw new RuntimeException("Lock Name = " +
           info.getLockName() + " expected = " + values[LOCK_NAME]);
    }
    if (info.getLockOwnerId() !=
            ((Long) values[LOCK_OWNER_ID]).longValue()) {
        throw new RuntimeException(
           "LockOwner Id = " + info.getLockOwnerId() +
           " expected = " + values[LOCK_OWNER_ID]);
    }
    if (!info.getLockOwnerName().equals(values[LOCK_OWNER_NAME])) {
        throw new RuntimeException("LockOwner Name = " +
           info.getLockOwnerName() + " expected = " +
           values[LOCK_OWNER_NAME]);
    }

    checkStackTrace(info.getStackTrace());

    checkLockInfo(info.getLockInfo());
}