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ThreadLister.javaAPI DocExample2465Fri Feb 16 13:29:48 GMT 1996None

ThreadLister

public class ThreadLister extends Object

Fields Summary
Constructors Summary
Methods Summary
public static voidlistAllThreads(java.io.PrintStream out)

        ThreadGroup current_thread_group;
        ThreadGroup root_thread_group;
        ThreadGroup parent;
        
        // Get the current thread group
        current_thread_group = Thread.currentThread().getThreadGroup();
        
        // Now go find the root thread group
        root_thread_group = current_thread_group;
        parent = root_thread_group.getParent();
        while(parent != null) {
            root_thread_group = parent;
            parent = parent.getParent();
        }
        
        // And list it, recursively
        list_group(out, root_thread_group, "");
private static voidlist_group(java.io.PrintStream out, java.lang.ThreadGroup g, java.lang.String indent)

        if (g == null) return;
        int num_threads = g.activeCount();
        int num_groups = g.activeGroupCount();
        Thread[] threads = new Thread[num_threads];
        ThreadGroup[] groups = new ThreadGroup[num_groups];
        
        g.enumerate(threads, false);
        g.enumerate(groups, false);
        
        out.println(indent + "Thread Group: " + g.getName() + 
                "  Max Priority: " + g.getMaxPriority() +
                (g.isDaemon()?" Daemon":""));
        
        for(int i = 0; i < num_threads; i++)
            print_thread_info(out, threads[i], indent + "    ");
        for(int i = 0; i < num_groups; i++)
            list_group(out, groups[i], indent + "    ");
public static voidmain(java.lang.String[] args)

        ThreadLister.listAllThreads(System.out);
private static voidprint_thread_info(java.io.PrintStream out, java.lang.Thread t, java.lang.String indent)

        if (t == null) return;
        out.println(indent + "Thread: " + t.getName() +
                "  Priority: " + t.getPriority() +
                (t.isDaemon()?" Daemon":"") +
                (t.isAlive()?"":" Not Alive"));