Example usage for java.lang.management ThreadInfo getLockOwnerId

Introduction

In this page you can find the example usage for java.lang.management ThreadInfo getLockOwnerId.

Prototype

public long getLockOwnerId() 

Source Link

Document

Returns the ID of the thread which owns the object for which the thread associated with this ThreadInfo is blocked waiting.

Usage

From source file:Main.java

/**
 * Get the thread who's lock is blocking the given thread. A null is
 * returned if there is no such thread.//from  www.  ja va 2s  .co  m
 * 
 * @param blockedThread
 *        the blocked thread
 * @return the blocking thread, or null if there is none
 * @throws NullPointerException
 *         if the blocked thread is null
 */
public static Thread getBlockingThread(final Thread blockedThread) {
    final ThreadInfo info = getThreadInfo(blockedThread);
    if (info == null)
        return null;
    final long id = info.getLockOwnerId();
    if (id == -1)
        return null;
    return getThread(id);
}

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From source file:Main.java

/** Builds the stack traces of all the given ThreadInfos in the buffer.  Returns the stack trace of the first thread. */
private static StackTraceElement[] buildTrace(ThreadInfo[] allThreadInfo, StringBuilder buffer) {
    StackTraceElement[] firstStackTrace = null;
    for (ThreadInfo info : allThreadInfo) {
        buffer.append("\"" + info.getThreadName() + "\" (id=" + info.getThreadId() + ")");
        buffer.append(" " + info.getThreadState() + " on " + info.getLockName() + " owned by ");
        buffer.append("\"" + info.getLockOwnerName() + "\" (id=" + info.getLockOwnerId() + ")");
        if (info.isSuspended())
            buffer.append(" (suspended)");
        if (info.isInNative())
            buffer.append(" (in native)");
        buffer.append("\n");
        StackTraceElement[] trace = info.getStackTrace();
        if (firstStackTrace == null)
            firstStackTrace = trace;// w  w  w . j  a v  a 2 s . co  m
        for (int i = 0; i < trace.length; i++) {
            buffer.append("\tat " + trace[i].toString() + "\n");
            if (i == 0)
                addLockInfo(info, buffer);
            addMonitorInfo(info, buffer, i);
        }

        addLockedSynchronizers(info, buffer);

        buffer.append("\n");
    }
    return firstStackTrace;
}

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From source file:Main.java

public static String getThreadHeadline(ThreadInfo threadInfo) {
    String buf = "\"" + threadInfo.getThreadName() + "\"" + " Id=" + threadInfo.getThreadId() + " "
            + threadInfo.getThreadState();

    if (threadInfo.getLockName() != null) {
        buf += " on " + threadInfo.getLockName();
    }/*from  w  w w .j  av  a2 s  .  c o  m*/

    if (threadInfo.getLockOwnerName() != null) {
        buf += " owned by \"" + threadInfo.getLockOwnerName() + "\" Id=" + threadInfo.getLockOwnerId();
    }

    if (threadInfo.isSuspended()) {
        buf += " (suspended)";
    }

    if (threadInfo.isInNative()) {
        buf += " (in native)";
    }

    return buf;
}

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From source file:Main.java

/**
 * Turns the given {@link ThreadInfo} into a {@link String}.
 *//*from  w ww.  ja  v a  2s . co m*/
public static String toString(ThreadInfo[] threads) {
    StringBuilder buffer = new StringBuilder();

    for (ThreadInfo info : threads) {
        buffer.append("\"").append(info.getThreadName()).append("\" (id=").append(info.getThreadId())
                .append(")");

        buffer.append(" ").append(info.getThreadState()).append(" on ").append(info.getLockName())
                .append(" owned by ");

        buffer.append("\"").append(info.getLockOwnerName()).append("\" (id=").append(info.getLockOwnerId())
                .append(")");

        if (info.isSuspended()) {
            buffer.append(" (suspended)");
        }

        if (info.isInNative()) {
            buffer.append(" (is native)");
        }
        buffer.append("\n");

        StackTraceElement[] trace = info.getStackTrace();
        for (int i = 0; i < trace.length; i++) {
            buffer.append("\tat ").append(trace[i]).append("\n");

            if (i == 0) {
                buffer.append(getLockState(info));
            }

            buffer.append(getLockedMonitors(info, i));
        }

        buffer.append("\n");
    }

    return buffer.toString();
}

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From source file:Main.java

private static void formatState(final StringBuilder sb, final ThreadInfo info) {
    final Thread.State state = info.getThreadState();
    sb.append(state);/*from  w ww. j a v a2  s  .co  m*/
    switch (state) {
    case BLOCKED: {
        sb.append(" (on object monitor owned by \"");
        sb.append(info.getLockOwnerName()).append("\" Id=").append(info.getLockOwnerId()).append(")");
        break;
    }
    case WAITING: {
        final StackTraceElement element = getStackForThread(info.getThreadId())[0];
        final String className = element.getClassName();
        final String method = element.getMethodName();
        if (className.equals("java.lang.Object") && method.equals("wait")) {
            sb.append(" (on object monitor");
            if (info.getLockOwnerName() != null) {
                sb.append(" owned by \"");
                sb.append(info.getLockOwnerName()).append("\" Id=").append(info.getLockOwnerId());
            }
            sb.append(")");
        } else if (className.equals("java.lang.Thread") && method.equals("join")) {
            sb.append(" (on completion of thread ").append(info.getLockOwnerId()).append(")");
        } else {
            sb.append(" (parking for lock");
            if (info.getLockOwnerName() != null) {
                sb.append(" owned by \"");
                sb.append(info.getLockOwnerName()).append("\" Id=").append(info.getLockOwnerId());
            }
            sb.append(")");
        }
        break;
    }
    case TIMED_WAITING: {
        final StackTraceElement element = info.getStackTrace()[0];
        final String className = element.getClassName();
        final String method = element.getMethodName();
        if (className.equals("java.lang.Object") && method.equals("wait")) {
            sb.append(" (on object monitor");
            if (info.getLockOwnerName() != null) {
                sb.append(" owned by \"");
                sb.append(info.getLockOwnerName()).append("\" Id=").append(info.getLockOwnerId());
            }
            sb.append(")");
        } else if (className.equals("java.lang.Thread") && method.equals("sleep")) {
            sb.append(" (sleeping)");
        } else if (className.equals("java.lang.Thread") && method.equals("join")) {
            sb.append(" (on completion of thread ").append(info.getLockOwnerId()).append(")");
        } else {
            sb.append(" (parking for lock");
            if (info.getLockOwnerName() != null) {
                sb.append(" owned by \"");
                sb.append(info.getLockOwnerName()).append("\" Id=").append(info.getLockOwnerId());
            }
            sb.append(")");
        }
        break;
    }
    default:
        break;
    }
}

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From source file:Main.java

static public String toString(ThreadInfo threadInfo) {
    StringBuilder sb = new StringBuilder("\"" + threadInfo.getThreadName() + "\"" + " Id="
            + threadInfo.getThreadId() + " " + threadInfo.getThreadState());
    if (threadInfo.getLockName() != null) {
        sb.append(" on " + threadInfo.getLockName());
    }//from  w  ww.j a  v  a 2  s .  c o  m
    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');
    int i = 0;
    StackTraceElement[] stackTrace = threadInfo.getStackTrace();
    for (StackTraceElement ste : stackTrace) {
        //           for (; i < threadInfo.getStackTrace().length && i < 64; 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');
            }
        }
    }
    if (i < stackTrace.length) {
        sb.append("\t...");
        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.toString();
}

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From source file:Main.java

private static String threadInfoToString(ThreadInfo threadInfo) {
    StringBuilder sb = new StringBuilder("\"" + threadInfo.getThreadName() + "\"" + " Id="
            + threadInfo.getThreadId() + " " + threadInfo.getThreadState());
    if (threadInfo.getLockName() != null) {
        sb.append(" on " + threadInfo.getLockName());
    }//  w  ww  .  j a v  a 2s  .  c  o  m
    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');
    int i = 0;
    for (; i < threadInfo.getStackTrace().length; i++) {
        StackTraceElement ste = threadInfo.getStackTrace()[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.toString();
}

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From source file:Main.java

private static void threadHeader(StringBuilder sb, ThreadInfo threadInfo) {
    final String threadName = threadInfo.getThreadName();
    sb.append("\"");
    sb.append(threadName);/* w w w .ja va 2s .c o m*/
    sb.append("\" ");
    sb.append("Id=");
    sb.append(threadInfo.getThreadId());

    try {
        final Thread.State threadState = threadInfo.getThreadState();
        final String lockName = threadInfo.getLockName();
        final String lockOwnerName = threadInfo.getLockOwnerName();
        final Long lockOwnerId = threadInfo.getLockOwnerId();
        final Boolean isSuspended = threadInfo.isSuspended();
        final Boolean isInNative = threadInfo.isInNative();

        sb.append(" ");
        sb.append(threadState);
        if (lockName != null) {
            sb.append(" on ");
            sb.append(lockName);
        }
        if (lockOwnerName != null) {
            sb.append(" owned by \"");
            sb.append(lockOwnerName);
            sb.append("\" Id=");
            sb.append(lockOwnerId);
        }
        if (isSuspended) {
            sb.append(" (suspended)");
        }
        if (isInNative) {
            sb.append(" (in native)");
        }
    } catch (final Exception e) {
        sb.append(" ( Got exception : ").append(e.getMessage()).append(" :");
    }

    sb.append('\n');
}

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From source file:org.apache.bookkeeper.common.testing.util.TimedOutTestsListener.java

private static void printThread(ThreadInfo ti, PrintWriter out) {
    out.print("\"" + ti.getThreadName() + "\"" + " Id=" + ti.getThreadId() + " in " + ti.getThreadState());
    if (ti.getLockName() != null) {
        out.print(" on lock=" + ti.getLockName());
    }/*from   w w  w  .  j a v a  2s .  c  o m*/
    if (ti.isSuspended()) {
        out.print(" (suspended)");
    }
    if (ti.isInNative()) {
        out.print(" (running in native)");
    }
    out.println();
    if (ti.getLockOwnerName() != null) {
        out.println(indent + " owned by " + ti.getLockOwnerName() + " Id=" + ti.getLockOwnerId());
    }
}

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From source file:Main.java

public static String takeDumpJSON(ThreadMXBean threadMXBean) throws IOException {
    ThreadInfo[] threadInfos = threadMXBean.dumpAllThreads(true, true);
    List<Map<String, Object>> threads = new ArrayList<>();

    for (ThreadInfo thread : threadInfos) {
        Map<String, Object> threadMap = new HashMap<>();
        threadMap.put("name", thread.getThreadName());
        threadMap.put("id", thread.getThreadId());
        threadMap.put("state", thread.getThreadState().name());
        List<String> stacktrace = new ArrayList<>();
        for (StackTraceElement element : thread.getStackTrace()) {
            stacktrace.add(element.toString());
        }//from  ww  w.  jav a  2 s  .co m
        threadMap.put("stack", stacktrace);

        if (thread.getLockName() != null) {
            threadMap.put("lock_name", thread.getLockName());
        }
        if (thread.getLockOwnerId() != -1) {
            threadMap.put("lock_owner_id", thread.getLockOwnerId());
        }
        if (thread.getBlockedTime() > 0) {
            threadMap.put("blocked_time", thread.getBlockedTime());
        }
        if (thread.getBlockedCount() > 0) {
            threadMap.put("blocked_count", thread.getBlockedCount());
        }
        if (thread.getLockedMonitors().length > 0) {
            threadMap.put("locked_monitors", thread.getLockedMonitors());
        }
        if (thread.getLockedSynchronizers().length > 0) {
            threadMap.put("locked_synchronizers", thread.getLockedSynchronizers());
        }
        threads.add(threadMap);
    }
    ObjectMapper om = new ObjectMapper();
    ObjectNode json = om.createObjectNode();
    json.put("date", new Date().toString());
    json.putPOJO("threads", threads);

    long[] deadlockedThreads = threadMXBean.findDeadlockedThreads();
    long[] monitorDeadlockedThreads = threadMXBean.findMonitorDeadlockedThreads();
    if (deadlockedThreads != null && deadlockedThreads.length > 0) {
        json.putPOJO("deadlocked_thread_ids", deadlockedThreads);
    }
    if (monitorDeadlockedThreads != null && monitorDeadlockedThreads.length > 0) {
        json.putPOJO("monitor_deadlocked_thread_ids", monitorDeadlockedThreads);
    }
    om.enable(SerializationFeature.INDENT_OUTPUT);
    return om.writerWithDefaultPrettyPrinter().writeValueAsString(json);
}

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