浏览量 4244
2014/04/07 16:32
1、创建集合用来存所有的ip地址,并指定实现类。
private Queue<String> allIp;
allIp = new LinkedList <String>();
for (int i = mini ; i <= maxi; i++) {
String host = hosts + "." + i;
allIp.offer( host);
}
2、创建runnable实现类,创建 getIp()方法每次取一个ip地址测试,synchronized 用以同步处理。
private class rHost implements Runnable {
private String taskIp = null;
Message msg = new Message();
private LinkedList link = new LinkedList();
@Override
public void run() {
try {
while ((taskIp = getIp()) != null) {
if (flag == 1) {
InetAddress addr = InetAddress.getByName(taskIp);
status = (( s - mini) * 100 / ( maxi - mini));
if (addr.isReachable(gettimeout())) {
count++;
link.add(taskIp);
}
handler1.sendEmptyMessage( status);
} else if (flag == 2) {
Thread. currentThread().interrupt();
}
}
if (!link .isEmpty()) {
msg. obj = link;
pingHandler.sendMessage(msg );
}
} catch (Exception e) {
e.printStackTrace();
}
}
public String getIp() {
String ip = null;
synchronized (allIp ) {
ip = allIp.poll();
s++;
// System.out.println(s);
}
return ip;
}
3、创建线程池添加上面的runnable接口。
public void startPing() {
count = 0;
int threadNum = 100;
ExecutorService executor = Executors. newFixedThreadPool(threadNum);
for (int i = 0; i < threadNum; i++) {
executor. execute(new rHost());
}
executor.shutdown();
try {
while (!executor.isTerminated()) {
Thread. sleep(100);
}
} catch (Exception e) {
e.printStackTrace();
}
}
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