Example usage for java.lang ThreadGroup getParent

Introduction

In this page you can find the example usage for java.lang ThreadGroup getParent.

Prototype

public final ThreadGroup getParent()

Source Link

Document

Returns the parent of this thread group.

Usage

From source file:Main.java

public static ThreadGroup getRootThreadGroup() {
    if (rootThreadGroup == null) {
        ThreadGroup tg = Thread.currentThread().getThreadGroup();
        ThreadGroup parent = tg.getParent();
        while (parent != null) {
            tg = parent;/*from ww  w.jav  a2  s  .c  o m*/
            parent = tg.getParent();
        }
        rootThreadGroup = tg;
    }
    return rootThreadGroup;
}

From source file:Main.java

public static Thread[] getThreads() {
    Thread currentThread = Thread.currentThread();

    ThreadGroup threadGroup = currentThread.getThreadGroup();

    while (threadGroup.getParent() != null) {
        threadGroup = threadGroup.getParent();
    }/* ww w . j  a  va  2 s.  c o  m*/

    int threadCountGuess = threadGroup.activeCount();

    Thread[] threads = new Thread[threadCountGuess];

    int threadCountActual = threadGroup.enumerate(threads);

    while (threadCountActual == threadCountGuess) {
        threadCountGuess *= 2;

        threads = new Thread[threadCountGuess];

        threadCountActual = threadGroup.enumerate(threads);
    }

    return threads;
}

From source file:Main.java

public static ThreadGroup getRootThreadGroup() {
    ThreadGroup rootThreadGroup = Thread.currentThread().getThreadGroup();
    ThreadGroup parent;/*w  ww  .  ja  v  a2s  . c o m*/
    while ((parent = rootThreadGroup.getParent()) != null) {
        rootThreadGroup = parent;
    }
    return rootThreadGroup;
}

From source file:Main.java

public static Thread getThreadByName(String name) {
    ThreadGroup tg = Thread.currentThread().getThreadGroup();

    while (tg.getParent() != null) {

        tg = tg.getParent();/*from  w w  w.j av  a 2 s  .  co  m*/
    }

    Thread[] threads = new Thread[tg.activeCount() + 1024];

    tg.enumerate(threads, true);

    boolean bad_found = false;

    for (int i = 0; i < threads.length; i++) {

        Thread t = threads[i];

        if (t != null && t.isAlive() && t != Thread.currentThread() && !t.isDaemon()
                && t.getName().equals(name)) {
            return t;
        }
    }

    return null;
}

From source file:Main.java

/**
 * Returns the root thread group./*from  w w  w.j ava2s . c o m*/
 *
 * @return The root thread group.
 */
public static ThreadGroup getRootThreadGroup() {
    ThreadGroup group = getCurrentThread().getThreadGroup();
    ThreadGroup parent = group.getParent();

    while (parent != null) {
        group = parent;
        parent = group.getParent();
    }

    return group;
}

From source file:Main.java

public static List<Thread> getFullThreadList(boolean includeDaemons) {

    List<Thread> list = new ArrayList<Thread>();

    // Find the root thread group
    ThreadGroup root = Thread.currentThread().getThreadGroup().getParent();
    while (root.getParent() != null) {
        root = root.getParent();/*from   w  ww  . ja v  a2 s  .  c  o m*/
    }

    // Visit each thread group
    visit(list, root, 0, includeDaemons);

    // returns the full list
    return list;
}

From source file:Main.java

private static ThreadGroup getRootThreadGroup() {

    if (ROOT == null) {
        ThreadGroup current = Thread.currentThread().getThreadGroup();
        ThreadGroup parent;//  ww w .j  a  va2 s.  c o  m
        while ((parent = current.getParent()) != null)
            current = parent;
        ROOT = current;
    }

    return ROOT;
}

From source file:Main.java

public static ThreadGroup getRootThreadGroup() {
    if (rootThreadGroup != null) {
        return rootThreadGroup;
    }/*from   ww w . j a va  2 s . co  m*/
    ThreadGroup tg = Thread.currentThread().getThreadGroup();
    ThreadGroup ptg;
    while ((ptg = tg.getParent()) != null) {
        tg = ptg;
    }
    return tg;
}

From source file:Main.java

public static ArrayList<Thread> getThreads() {
    // Find the root thread group
    ThreadGroup root = Thread.currentThread().getThreadGroup().getParent();
    while (root.getParent() != null) {
        root = root.getParent();// w ww . j  ava  2s.co  m
    }

    ArrayList<Thread> threads = new ArrayList<Thread>();
    visit(root, 0, threads);
    return threads;
}

From source file:Main.java

/**
 * Get root thread group/* w  w  w .j  av  a2  s.c  o m*/
 *
 * @return root thread group
 */
private static ThreadGroup getRootThreadGroup() {
    ThreadGroup root = Thread.currentThread().getThreadGroup();
    ThreadGroup parent = root.getParent();
    while (parent != null) {
        root = parent;
        parent = parent.getParent();
    }
    return root;
}