static void invalidateAll() {
current = null;
group = null;
synchronized (threads) {
Iterator iter = threads().iterator();
while (iter.hasNext()) {
ThreadInfo ti = (ThreadInfo) iter.next();
ti.invalidate();
}
}
}
static void setCurrentThreadInfo(ThreadInfo tinfo) {
current = tinfo;
if (current != null) {
current.invalidate();
}
}