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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace ParallelForEachDemo
{
public class Store
{
public int Id { get; set; }
public string Domain { get; set; }
public int SleepTime { get; set; }
}
public class Program
{
static void Main(string[] args)
{
var stores = new List<Store> {
new Store{Id=1,Domain="yahoo.com",SleepTime=6000},
new Store{Id=2,Domain="google.com",SleepTime=5000},
new Store{Id=3,Domain="baidu.com",SleepTime=4000},
new Store{Id=4,Domain="sina.com.cn",SleepTime=3000},
new Store{Id=5,Domain="163.com",SleepTime=2000},
new Store{Id=6,Domain="21cn.com",SleepTime=10000}
};
Console.ReadKey();
var ids = GetIds(stores);
Console.WriteLine("Id list:{0}", string.Join(",", ids));
Console.ReadKey();
}
private static CancellationTokenSource cts = new CancellationTokenSource();
static List<int> GetIds(List<Store> stores)
{
var ids = new List<int>();
var threadCounter = 0;
var token = cts.Token;
try
{
var pr = Parallel.ForEach(stores, new ParallelOptions { MaxDegreeOfParallelism = 10, CancellationToken = token }, store =>
{
threadCounter++;
Console.WriteLine("Current threads:{0},Current thread id:{1}", threadCounter, Thread.CurrentThread.ManagedThreadId);
//var rand = new Random();
//var sleep = rand.Next(100, 10000);
if (threadCounter > 3)
{
cts.Cancel(true);
}
Console.WriteLine("Store id:{0},sleep seconds:{1}", store.Id, store.SleepTime);
Thread.Sleep(store.SleepTime);
Console.WriteLine("Store id:{0} completed!!!", store.Id);
ids.Add(store.Id);
});
Console.WriteLine("ALL STORES ARE COMPLETED?{0}", pr.IsCompleted);
}
catch (OperationCanceledException ex)
{
Console.WriteLine("Task was canceled!!!{0}", ex.Message);
}
//Console.WriteLine("All stores are completed!!!");
return ids;
}
}
}
|
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