private static void showThreads(PrintStream pw, ThreadGroup g, Thread current) {
int nthreads = g.activeCount();
pw.println("\nThread Group = " + g.getName() + " activeCount= " + nthreads);
Thread[] tarray = new Thread[nthreads];
int n = g.enumerate(tarray, false);
for (int i = 0; i < n; i++) {
Thread thread = tarray[i];
ClassLoader loader = thread.getContextClassLoader();
String loaderName = (loader == null) ? "Default" : loader.getClass().getName();
Thread.State state = thread.getState();
long id = thread.getId();
pw.print(" " + id + " " + thread.getName() + " " + state + " " + loaderName);
if (thread == current) pw.println(" **** CURRENT ***");
else pw.println();
}
int ngroups = g.activeGroupCount();
ThreadGroup[] garray = new ThreadGroup[ngroups];
int ng = g.enumerate(garray, false);
for (int i = 0; i < ng; i++) {
ThreadGroup nested = garray[i];
showThreads(pw, nested, current);
}
}
private static void dumptg(ThreadGroup tg, PrintWriter out, int indent) {
for (int o = 0; o < indent; o++) out.print("\t");
out.println("G: \"" + tg.getName() + "\"");
Thread[] ths = new Thread[tg.activeCount() * 2];
ThreadGroup[] tgs = new ThreadGroup[tg.activeGroupCount() * 2];
int nt = tg.enumerate(ths, false);
int ng = tg.enumerate(tgs, false);
for (int i = 0; i < nt; i++) {
Thread ct = ths[i];
for (int o = 0; o < indent + 1; o++) out.print("\t");
out.println("T: \"" + ct.getName() + "\"");
}
for (int i = 0; i < ng; i++) {
ThreadGroup cg = tgs[i];
dumptg(cg, out, indent + 1);
}
}