Examples with ThreadInfo java.lang.management.ThreadInfo used on opensource projects

Example 46 with ThreadInfo

use of java.lang.management.ThreadInfo in project geode by apache.

the class MemberMBeanBridge method fetchJvmThreads.

/**
   * @return JVM thread list
   */
public String[] fetchJvmThreads() {
    long[] threadIds = threadMXBean.getAllThreadIds();
    ThreadInfo[] threadInfos = threadMXBean.getThreadInfo(threadIds, 0);
    if (threadInfos == null || threadInfos.length < 1) {
        return ManagementConstants.NO_DATA_STRING;
    }
    ArrayList<String> thrdStr = new ArrayList<String>(threadInfos.length);
    for (ThreadInfo thInfo : threadInfos) {
        if (thInfo != null) {
            thrdStr.add(thInfo.getThreadName());
        }
    }
    String[] result = new String[thrdStr.size()];
    return thrdStr.toArray(result);
}

Example 47 with ThreadInfo

use of java.lang.management.ThreadInfo in project metrics by dropwizard.

the class ThreadDump method dump.

/**
 * Dumps all of the threads' current information to an output stream.
 *
 * @param out an output stream
 */
public void dump(OutputStream out) {
    final ThreadInfo[] threads = this.threadMXBean.dumpAllThreads(true, true);
    final PrintWriter writer = new PrintWriter(new OutputStreamWriter(out, UTF_8));
    for (int ti = threads.length - 1; ti >= 0; ti--) {
        final ThreadInfo t = threads[ti];
        writer.printf("\"%s\" id=%d state=%s", t.getThreadName(), t.getThreadId(), t.getThreadState());
        final LockInfo lock = t.getLockInfo();
        if (lock != null && t.getThreadState() != Thread.State.BLOCKED) {
            writer.printf("%n    - waiting on <0x%08x> (a %s)", lock.getIdentityHashCode(), lock.getClassName());
            writer.printf("%n    - locked <0x%08x> (a %s)", lock.getIdentityHashCode(), lock.getClassName());
        } else if (lock != null && t.getThreadState() == Thread.State.BLOCKED) {
            writer.printf("%n    - waiting to lock <0x%08x> (a %s)", lock.getIdentityHashCode(), lock.getClassName());
        }
        if (t.isSuspended()) {
            writer.print(" (suspended)");
        }
        if (t.isInNative()) {
            writer.print(" (running in native)");
        }
        writer.println();
        if (t.getLockOwnerName() != null) {
            writer.printf("     owned by %s id=%d%n", t.getLockOwnerName(), t.getLockOwnerId());
        }
        final StackTraceElement[] elements = t.getStackTrace();
        final MonitorInfo[] monitors = t.getLockedMonitors();
        for (int i = 0; i < elements.length; i++) {
            final StackTraceElement element = elements[i];
            writer.printf("    at %s%n", element);
            for (int j = 1; j < monitors.length; j++) {
                final MonitorInfo monitor = monitors[j];
                if (monitor.getLockedStackDepth() == i) {
                    writer.printf("      - locked %s%n", monitor);
                }
            }
        }
        writer.println();
        final LockInfo[] locks = t.getLockedSynchronizers();
        if (locks.length > 0) {
            writer.printf("    Locked synchronizers: count = %d%n", locks.length);
            for (LockInfo l : locks) {
                writer.printf("      - %s%n", l);
            }
            writer.println();
        }
    }
    writer.println();
    writer.flush();
}

Example 48 with ThreadInfo

use of java.lang.management.ThreadInfo in project metrics by dropwizard.

the class ThreadDeadlockDetectorTest method returnsASetOfThreadsIfAnyAreDeadlocked.

@Test
public void returnsASetOfThreadsIfAnyAreDeadlocked() {
    final ThreadInfo thread1 = mock(ThreadInfo.class);
    when(thread1.getThreadName()).thenReturn("thread1");
    when(thread1.getLockName()).thenReturn("lock2");
    when(thread1.getLockOwnerName()).thenReturn("thread2");
    when(thread1.getStackTrace()).thenReturn(new StackTraceElement[] { new StackTraceElement("Blah", "bloo", "Blah.java", 150), new StackTraceElement("Blah", "blee", "Blah.java", 100) });
    final ThreadInfo thread2 = mock(ThreadInfo.class);
    when(thread2.getThreadName()).thenReturn("thread2");
    when(thread2.getLockName()).thenReturn("lock1");
    when(thread2.getLockOwnerName()).thenReturn("thread1");
    when(thread2.getStackTrace()).thenReturn(new StackTraceElement[] { new StackTraceElement("Blah", "blee", "Blah.java", 100), new StackTraceElement("Blah", "bloo", "Blah.java", 150) });
    final long[] ids = { 1, 2 };
    when(threads.findDeadlockedThreads()).thenReturn(ids);
    when(threads.getThreadInfo(eq(ids), anyInt())).thenReturn(new ThreadInfo[] { thread1, thread2 });
    assertThat(detector.getDeadlockedThreads()).containsOnly(String.format(Locale.US, "thread1 locked on lock2 (owned by thread2):%n" + "\t at Blah.bloo(Blah.java:150)%n" + "\t at Blah.blee(Blah.java:100)%n"), String.format(Locale.US, "thread2 locked on lock1 (owned by thread1):%n" + "\t at Blah.blee(Blah.java:100)%n" + "\t at Blah.bloo(Blah.java:150)%n"));
}

Example 49 with ThreadInfo

use of java.lang.management.ThreadInfo in project suite by stupidsing.

the class Profiler method recordStats.

private void recordStats() {
    long currentThreadId = Thread.currentThread().getId();
    ThreadMXBean mx = ManagementFactory.getThreadMXBean();
    long[] threadIds = mx.getAllThreadIds();
    ThreadInfo[] threadInfos = mx.getThreadInfo(threadIds, stackTraceDepth);
    count.getAndIncrement();
    for (ThreadInfo threadInfo : threadInfos) if (// 
    threadInfo != null && // 
    threadInfo.getThreadId() != currentThreadId && // 
    threadInfo.getThreadState() == State.RUNNABLE && !String_.equals(threadInfo.getThreadName(), "ReaderThread")) {
        StackTraceElement[] stackTrace = threadInfo.getStackTrace();
        Set<String> elements = new HashSet<>();
        int i = stackTrace.length;
        Call call = callRoot;
        // anonymous classes
        while (0 < i) {
            StackTraceElement elem = stackTrace[--i];
            String fileName = elem.getFileName();
            int lineNumber = elem.getLineNumber();
            String mn = elem.getClassName() + "." + elem.getMethodName();
            String fn = fileName != null ? " " + fileName + (1 < lineNumber ? ":" + lineNumber : "") : "<unknown>";
            String name = mn + fn;
            (call = call.callees.computeIfAbsent(mn, any -> new Call())).count++;
            if (elements.add(name))
                records.computeIfAbsent(name, any -> new Record()).count++;
        }
    }
}

Example 50 with ThreadInfo

use of java.lang.management.ThreadInfo in project suite by stupidsing.

the class ThreadMxBeanTest method test.

@Test
public void test() {
    ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
    System.out.println(threadBean.getThreadCount());
    ThreadInfo[] threadInfos = threadBean.dumpAllThreads(false, false);
    for (ThreadInfo threadInfo : threadInfos) if (threadInfo.getThreadState() == State.RUNNABLE)
        System.out.println(threadInfo.toString());
}