Example usage for java.lang ThreadGroup destroy

Introduction

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

Prototype

public final void destroy() 

Source Link

Document

Destroys this thread group and all of its subgroups.

Usage

From source file:com.flexive.shared.cache.impl.FxJBossEmbeddedCacheProvider.java

/**
 * {@inheritDoc}/*from  w w  w .  j a  v  a  2 s.com*/
 */
@Override
public void shutdown() throws FxCacheException {
    cache.getCache().stop();
    cache.getCache().destroy();
    final ThreadGroup group = org.jgroups.util.Util.getGlobalThreadGroup();
    if (group.getClass().getClassLoader() == FxJBossEmbeddedCacheProvider.class.getClassLoader()) {
        // it seems that our JBoss cache instance created the group
        try {
            group.destroy();
        } catch (Exception e) {
            if (LOG.isWarnEnabled()) {
                LOG.warn("Failed to shutdown JGroups thread group: " + e.getMessage(), e);
            }
        }
    }
}

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From source file:Main.java

public ThreadGroupDemo() {
    try {//w  ww.jav a2 s  . c om
        ThreadGroup pGroup = new ThreadGroup("Parent ThreadGroup");

        ThreadGroup cGroup = new ThreadGroup(pGroup, "Child ThreadGroup");

        Thread t1 = new Thread(pGroup, this);
        System.out.println("Starting " + t1.getName());
        t1.start();

        Thread t2 = new Thread(cGroup, this);
        System.out.println("Starting " + t2.getName());
        t2.start();

        t1.join();
        t2.join();

        if (!cGroup.isDestroyed()) {
            cGroup.destroy();
        } else {
            System.out.println(cGroup.getName() + " destroyed");
        }

        // parent group destroyed
        if (!pGroup.isDestroyed()) {
            pGroup.destroy();
        } else {
            System.out.println(pGroup.getName() + " destroyed");
        }

    } catch (Exception ex) {
        System.out.println(ex.toString());
    }
}

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From source file:Main.java

public ThreadGroupDemo() {
    try {/*from  ww  w.  ja  va2 s.  c  o  m*/
        ThreadGroup pGroup = new ThreadGroup("Parent ThreadGroup");

        ThreadGroup cGroup = new ThreadGroup(pGroup, "Child ThreadGroup");

        Thread t1 = new Thread(pGroup, this);
        System.out.println("Starting " + t1.getName());
        t1.start();

        Thread t2 = new Thread(cGroup, this);
        System.out.println("Starting " + t2.getName());
        t2.start();

        // block until the other threads finish
        t1.join();
        t2.join();

        // child group destroyed
        cGroup.destroy();
        System.out.println(cGroup.getName() + " destroyed");

        // parent group destroyed
        pGroup.destroy();
        System.out.println(pGroup.getName() + " destroyed");

    } catch (InterruptedException ex) {
        System.out.println(ex.toString());
    }
}

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From source file:com.meltmedia.cadmium.servlets.ClassLoaderLeakPreventor.java

/**
 * Destroy any ThreadGroups that are loaded by the application classloader
 */// ww w.j a  va 2  s.c o m
public void destroyThreadGroups() {
    try {
        ThreadGroup systemThreadGroup = Thread.currentThread().getThreadGroup();
        while (systemThreadGroup.getParent() != null) {
            systemThreadGroup = systemThreadGroup.getParent();
        }
        // systemThreadGroup should now be the topmost ThreadGroup, "system"

        int enumeratedGroups;
        ThreadGroup[] allThreadGroups;
        int noOfGroups = systemThreadGroup.activeGroupCount(); // Estimate no of groups
        do {
            noOfGroups += 10; // Make room for 10 extra
            allThreadGroups = new ThreadGroup[noOfGroups];
            enumeratedGroups = systemThreadGroup.enumerate(allThreadGroups);
        } while (enumeratedGroups >= noOfGroups); // If there was not room for all groups, try again

        for (ThreadGroup threadGroup : allThreadGroups) {
            if (isLoadedInWebApplication(threadGroup) && !threadGroup.isDestroyed()) {
                warn("ThreadGroup '" + threadGroup + "' was loaded inside application, needs to be destroyed");

                int noOfThreads = threadGroup.activeCount();
                if (noOfThreads > 0) {
                    warn("There seems to be " + noOfThreads + " running in ThreadGroup '" + threadGroup
                            + "'; interrupting");
                    try {
                        threadGroup.interrupt();
                    } catch (Exception e) {
                        error(e);
                    }
                }

                try {
                    threadGroup.destroy();
                    info("ThreadGroup '" + threadGroup + "' successfully destroyed");
                } catch (Exception e) {
                    error(e);
                }
            }
        }
    } catch (Exception ex) {
        error(ex);
    }
}

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