stack.push(node);
node = node.left;
}
node = stack.pop();
node = node.right;

long cur = System.currentTimeMillis();
if (cur - start > 1000) {
if (handleNode(node)) {
node = null;
}
}
}
System.out.println("[ job" + id + " ] ---end");
tasks.remove(id);
if ( tasks.size() == 0) {
threadPool.shutdown();
}
}
}

public static void main(String[] args) {
ConcurTravBTree tt = new ConcurTravBTree();
System.out.println("init tree...");
tt.init();

System.out.println("start preOrderTraverse traverse...");
long start = System.currentTimeMillis();
tt.tree.preOrderTraverse();
long end = System.currentTimeMillis();
System.out.println("---- preOrderTraverse cost " + (end - start));

System.out.println("start concurrent traverse...");
long cstart = System.currentTimeMillis();
tt.start();
try {
tt.threadPool.awaitTermination(Integer.MAX_VALUE, TimeUnit.SECONDS);
} catch (InterruptedException e) {
e.printStackTrace();
}
long cend = System.currentTimeMillis();
System.out.println("---- current traverse cost " + (cend - cstart));
}
}