private void cleanThreadMap() {
if (closing) {
return;
}
Thread[] copy = threadMap.keySet().toArray(new Thread[threadMap.size()]);
for (Thread t : copy) {
if (!t.isAlive()) {
ConnectionHolder ch = threadMap.remove(t);
if (ch != null) {
ch.close();
}
} else {
ConnectionHolder ch = threadMap.get(t);
if (ch != null && ch.hasExpired()) {
ch = threadMap.remove(t);
if (ch != null) {
ch.close();
}
}
}
}
}
