package forkjoin;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.Future;
import java.util.concurrent.RecursiveTask;
import cputils.CPHMWYService;
public class DataLinkThread extends RecursiveTask<List<String>>{
private static final long serialVersionUID = -4046194613023076351L;
private static final int THRESHOLD = 10;
private int start;
private int end;
private static CPHMWYService wyService = new CPHMWYService();
private Object target = null;
public Object getTarget() {
return target;
}
public void setTarget(Object target) {
this.target = target;
}
public DataLinkThread(int start, int end) {
this.start = start;
this.end = end;
}
@Override
protected List<String> compute() {
List<String> alllist = new ArrayList<String>();
List<String> list = null;;
if((end - start) < THRESHOLD){
for(int i = start; i<= end;i++){
//list = wyService.readDetailLink163("2014043", 3, i);
try {
Method method = target.getClass().getDeclaredMethod("readDetailLink163", String.class,Integer.class,String.class,Integer.class);
list = (List<String>) method.invoke(target, "2014043", 3, i);
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (SecurityException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
if (list.isEmpty()) {
break;
}
alllist.addAll(list);
}
// System.out.println("["+Thread.currentThread().getName()+"]start:"+start+" end:"+end);
return alllist;
}
int middle = (start + end) /2;
DataLinkThread left = new DataLinkThread(start, middle);
DataLinkThread right = new DataLinkThread(middle + 1, end);
left.fork();
right.fork();
alllist.addAll(left.join());
alllist.addAll(right.join());
return alllist;
}
public static void main(String[] args) throws InterruptedException, ExecutionException {
List<String> alllist = new ArrayList<String>();
long b = System.currentTimeMillis();
//alllist = wyService.wyDataLinks("2014043", 3);
//System.out.println("顺序执行：size："+alllist.size()+"time:"+(System.currentTimeMillis()-b));
//for (int i = 0; i < 5; i++) {
b = System.currentTimeMillis();
ForkJoinPool forkJoinPool = new ForkJoinPool(Runtime.getRuntime().availableProcessors());
int linkPages = wyService.dataLinkPages("2014043", 3);
DataLinkThread thread = new DataLinkThread(1,linkPages);
thread.setTarget(thread);
Future<List<String>> result = forkJoinPool.submit(thread);
forkJoinPool.shutdown();
//System.out.println("ForkJoin：size："+result.get().size()+" time:"+(System.currentTimeMillis()-b));
//}
}
}