Example usage for java.lang.management ThreadInfo getThreadName

Introduction

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

Prototype

public String getThreadName() 

Source Link

Document

Returns the name of the thread associated with this ThreadInfo .

Usage

From source file:org.apache.hadoop.hbase.util.ReflectionUtils.java

/**
 * Print all of the thread's information and stack traces.
 *
 * @param stream the stream to/*from   w  ww. j av  a 2 s .  c  o m*/
 * @param title a string title for the stack trace
 */
private static void printThreadInfo(PrintStream stream, String title) {
    final int STACK_DEPTH = 20;
    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;
        }
        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.hadoop.hbase.GenericTestUtils.java

/**
 * Assert that there are no threads running whose name matches the
 * given regular expression.//from ww w . j a va 2s.  c  o m
 * @param regex the regex to match against
 */
public static void assertNoThreadsMatching(String regex) {
    Pattern pattern = Pattern.compile(regex);
    ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();

    ThreadInfo[] infos = threadBean.getThreadInfo(threadBean.getAllThreadIds(), 20);
    for (ThreadInfo info : infos) {
        if (info == null)
            continue;
        if (pattern.matcher(info.getThreadName()).matches()) {
            Assert.fail("Leaked thread: " + info + "\n" + Joiner.on("\n").join(info.getStackTrace()));
        }
    }
}

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From source file:org.apache.hama.util.ReflectionUtils.java

/**
 * Print all of the thread's information and stack traces.
 * // w ww .  j a  v a 2 s .  c o m
 * @param stream the stream to
 * @param title a string title for the stack trace
 */
public synchronized static void printThreadInfo(PrintWriter stream, String title) {
    final int STACK_DEPTH = 20;
    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;
        }
        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:EventDispatchThreadHangMonitor.java

private static void checkForDeadlock() {
    ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
    long[] threadIds = threadBean.findMonitorDeadlockedThreads();
    if (threadIds == null) {
        return;//from  w  w w  . j  ava2  s  .  co m
    }
    Log.warn("deadlock detected involving the following threads:");
    ThreadInfo[] threadInfos = threadBean.getThreadInfo(threadIds, Integer.MAX_VALUE);
    for (ThreadInfo info : threadInfos) {
        Log.warn("Thread #" + info.getThreadId() + " " + info.getThreadName() + " (" + info.getThreadState()
                + ") waiting on " + info.getLockName() + " held by " + info.getLockOwnerName()
                + stackTraceToString(info.getStackTrace()));
    }
}

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From source file:org.apache.hadoop.util.ReflectionUtils.java

/**
 * Print all of the thread's information and stack traces.
 *
 * @param stream the stream to// w w w.java2 s .  com
 * @param title a string title for the stack trace
 */
public static synchronized void printThreadInfo(PrintWriter stream, String title) {
    final int stackDepth = 20;
    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, stackDepth);
        if (info == null) {
            stream.println("  Inactive");
            continue;
        }
        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.hadoop.mapred.JettyBugMonitor.java

/**
 * @return true if the given thread ID appears to be a Jetty selector thread
 * based on its stack trace/*from w w  w . j av a 2  s.  c o  m*/
 */
private static boolean isJettySelectorThread(long tid) {
    ThreadInfo info = threadBean.getThreadInfo(tid, 20);
    for (StackTraceElement stack : info.getStackTrace()) {
        // compare class names instead of classses, since
        // jetty uses a different classloader
        if (SelectChannelConnector.class.getName().equals(stack.getClassName())) {
            LOG.debug("Thread #" + tid + " (" + info.getThreadName() + ") " + "is a Jetty selector thread.");
            return true;
        }
    }
    LOG.debug("Thread #" + tid + " (" + info.getThreadName() + ") " + "is not a jetty thread");
    return false;
}

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From source file:com.buaa.cfs.utils.ReflectionUtils.java

/**
 * Print all of the thread's information and stack traces.
 *
 * @param stream the stream to/*from   w w w . ja v  a2  s  .  com*/
 * @param title  a string title for the stack trace
 */
public synchronized static void printThreadInfo(PrintStream stream, String title) {
    final int STACK_DEPTH = 20;
    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;
        }
        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:password.pwm.util.java.JavaHelper.java

/**
 * Copy of {@link ThreadInfo#toString()} but with the MAX_FRAMES changed from 8 to 256.
 *//*  w  ww .  j a  v a 2 s .com*/
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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From source file:com.alicloud.tablestore.adaptor.client.IntegratedTest.java

public static void printThreadInfo() {
    String title = "Automatic Stack Trace";
    PrintWriter stream = new PrintWriter(System.out);
    int STACK_DEPTH = 20;
    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, 20);
        if (info == null) {
            stream.println("  Inactive");
        } else {/*  w ww .j  a  v a 2  s .com*/
            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();
}

---

From source file:org.apache.hadoop.test.GenericTestUtils.java

/**
 * Determine if there are any threads whose name matches the regex.
 * @param pattern a Pattern object used to match thread names
 * @return true if there is any thread that matches the pattern
 *//*from   w  w w.java 2s .co m*/
public static boolean anyThreadMatching(Pattern pattern) {
    ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();

    ThreadInfo[] infos = threadBean.getThreadInfo(threadBean.getAllThreadIds(), 20);
    for (ThreadInfo info : infos) {
        if (info == null)
            continue;
        if (pattern.matcher(info.getThreadName()).matches()) {
            return true;
        }
    }
    return false;
}

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