Example usage for java.lang.management ThreadInfo getLockName

Introduction

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

Prototype

public String getLockName() 

Source Link

Document

Returns the LockInfo#toString string representation of an object for which the thread associated with this ThreadInfo is blocked waiting.

Usage

From source file:org.apache.storm.utils.Utils.java

/**
 * Gets some information, including stack trace, for a running thread.
 * @return A human-readable string of the dump.
 */// ww  w  . jav a  2 s  .  c o  m
public static String threadDump() {
    final StringBuilder dump = new StringBuilder();
    final java.lang.management.ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
    final java.lang.management.ThreadInfo[] threadInfos = threadMXBean
            .getThreadInfo(threadMXBean.getAllThreadIds(), 100);
    for (java.lang.management.ThreadInfo threadInfo : threadInfos) {
        dump.append('"');
        dump.append(threadInfo.getThreadName());
        dump.append("\" ");
        dump.append("\n   lock: ");
        dump.append(threadInfo.getLockName());
        dump.append(" owner: ");
        dump.append(threadInfo.getLockOwnerName());
        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");
    }
    return dump.toString();
}

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From source file:org.apache.tajo.master.querymaster.QueryMasterRunner.java

public static void printThreadInfo(PrintWriter stream, String title) {
    ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
    final int STACK_DEPTH = 60;
    boolean contention = threadBean.isThreadContentionMonitoringEnabled();
    long[] threadIds = threadBean.getAllThreadIds();
    stream.println("Process Thread Dump: " + title);
    stream.println(threadIds.length + " active threads");
    for (long tid : threadIds) {
        ThreadInfo info = threadBean.getThreadInfo(tid, STACK_DEPTH);
        if (info == null) {
            stream.println("  Inactive");
            continue;
        }//  www.j  a  v  a2  s. c om
        stream.println("Thread " + getTaskName(info.getThreadId(), info.getThreadName()) + ":");
        Thread.State state = info.getThreadState();
        stream.println("  State: " + state);
        stream.println("  Blocked count: " + info.getBlockedCount());
        stream.println("  Waited count: " + info.getWaitedCount());
        if (contention) {
            stream.println("  Blocked time: " + info.getBlockedTime());
            stream.println("  Waited time: " + info.getWaitedTime());
        }
        if (state == Thread.State.WAITING) {
            stream.println("  Waiting on " + info.getLockName());
        } else if (state == Thread.State.BLOCKED) {
            stream.println("  Blocked on " + info.getLockName());
            stream.println("  Blocked by " + getTaskName(info.getLockOwnerId(), info.getLockOwnerName()));
        }
        stream.println("  Stack:");
        for (StackTraceElement frame : info.getStackTrace()) {
            stream.println("    " + frame.toString());
        }
    }
    stream.flush();
}

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From source file:org.apache.tajo.master.TajoMaster.java

public void dumpThread(Writer writer) {
    PrintWriter stream = new PrintWriter(writer);
    int STACK_DEPTH = 20;
    boolean contention = threadBean.isThreadContentionMonitoringEnabled();
    long[] threadIds = threadBean.getAllThreadIds();
    stream.println("Process Thread Dump: Tajo Worker");
    stream.println(threadIds.length + " active threads");
    for (long tid : threadIds) {
        ThreadInfo info = threadBean.getThreadInfo(tid, STACK_DEPTH);
        if (info == null) {
            stream.println("  Inactive");
            continue;
        }//from  w w w .  j  ava2s .c  o  m
        stream.println("Thread " + getThreadTaskName(info.getThreadId(), info.getThreadName()) + ":");
        Thread.State state = info.getThreadState();
        stream.println("  State: " + state + ", Blocked count: " + info.getBlockedCount() + ", Waited count: "
                + info.getWaitedCount());
        if (contention) {
            stream.println(
                    "  Blocked time: " + info.getBlockedTime() + ", Waited time: " + info.getWaitedTime());
        }
        if (state == Thread.State.WAITING) {
            stream.println("  Waiting on " + info.getLockName());
        } else if (state == Thread.State.BLOCKED) {
            stream.println("  Blocked on " + info.getLockName() + ", Blocked by "
                    + getThreadTaskName(info.getLockOwnerId(), info.getLockOwnerName()));
        }
        stream.println("  Stack:");
        for (StackTraceElement frame : info.getStackTrace()) {
            stream.println("    " + frame.toString());
        }
        stream.println("");
    }
}

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From source file:org.apache.tajo.worker.TajoWorker.java

public void dumpThread(Writer writer) {
    PrintWriter stream = new PrintWriter(writer);
    int STACK_DEPTH = 20;
    boolean contention = threadBean.isThreadContentionMonitoringEnabled();
    long[] threadIds = threadBean.getAllThreadIds();
    stream.println("Process Thread Dump: Tajo Worker");
    stream.println(threadIds.length + " active threads");
    for (long tid : threadIds) {
        ThreadInfo info = threadBean.getThreadInfo(tid, STACK_DEPTH);
        if (info == null) {
            stream.println("  Inactive");
            continue;
        }/*w ww.  j a v a2 s .  c  o  m*/
        stream.println("Thread " + getThreadTaskName(info.getThreadId(), info.getThreadName()) + ":");
        Thread.State state = info.getThreadState();
        stream.println("  State: " + state + ",  Blocked count: " + info.getBlockedCount() + ",  Waited count: "
                + info.getWaitedCount());
        if (contention) {
            stream.println(
                    "  Blocked time: " + info.getBlockedTime() + ",  Waited time: " + info.getWaitedTime());
        }
        if (state == Thread.State.WAITING) {
            stream.println("  Waiting on " + info.getLockName());
        } else if (state == Thread.State.BLOCKED) {
            stream.println("  Blocked on " + info.getLockName() + ", Blocked by "
                    + getThreadTaskName(info.getLockOwnerId(), info.getLockOwnerName()));
        }
        stream.println("  Stack:");
        for (StackTraceElement frame : info.getStackTrace()) {
            stream.println("    " + frame.toString());
        }
        stream.println("");
    }
}

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From source file:org.jahia.tools.jvm.ThreadMonitor.java

private void printThread(ThreadInfo ti, StringBuilder dump) {
    StringBuilder sb = new StringBuilder(
            "\"" + ti.getThreadName() + "\"" + " nid=" + ti.getThreadId() + " state=" + ti.getThreadState());
    if (ti.isSuspended()) {
        sb.append(" (suspended)");
    }//from ww  w .j a  v a  2s.  com
    if (ti.isInNative()) {
        sb.append(" (running in native)");
    }
    sb.append(" []\n" + Patterns.DOLLAR.matcher(ti.getThreadState().getClass().getName()).replaceAll(".") + ": "
            + ti.getThreadState());
    if (ti.getLockName() != null && ti.getThreadState() != Thread.State.BLOCKED) {
        String[] lockInfo = Patterns.AT.split(ti.getLockName());
        sb.append("\n" + INDENT + "- waiting on <0x" + lockInfo[1] + "> (a " + lockInfo[0] + ")");
        sb.append("\n" + INDENT + "- locked <0x" + lockInfo[1] + "> (a " + lockInfo[0] + ")");
    } else if (ti.getLockName() != null && ti.getThreadState() == Thread.State.BLOCKED) {
        String[] lockInfo = Patterns.AT.split(ti.getLockName());
        sb.append("\n" + INDENT + "- waiting to lock <0x" + lockInfo[1] + "> (a " + lockInfo[0] + ")");
    }
    dump.append(sb.toString());
    dump.append("\n");
    if (ti.getLockOwnerName() != null) {
        dump.append(INDENT + " owned by " + ti.getLockOwnerName() + " id=" + ti.getLockOwnerId());
        dump.append("\n");
    }
}

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From source file:password.pwm.util.java.JavaHelper.java

/**
 * Copy of {@link ThreadInfo#toString()} but with the MAX_FRAMES changed from 8 to 256.
 *//*from  w w  w .  j a va 2  s  .  c  o m*/
public static String threadInfoToString(final ThreadInfo threadInfo) {
    final int MAX_FRAMES = 256;
    final 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');

    int counter = 0;
    for (; counter < threadInfo.getStackTrace().length && counter < MAX_FRAMES; counter++) {
        final StackTraceElement ste = threadInfo.getStackTrace()[counter];
        sb.append("\tat ").append(ste.toString());
        sb.append('\n');
        if (counter == 0 && threadInfo.getLockInfo() != null) {
            final 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() == counter) {
                sb.append("\t-  locked " + mi);
                sb.append('\n');
            }
        }
    }
    if (counter < threadInfo.getStackTrace().length) {
        sb.append("\t...");
        sb.append('\n');
    }

    final 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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