/// 1 Task：Waitall WaitAny Delay
/// 2 TaskFactory:ContinueWhenAny ContinueWhenAll
class Program
{
//Task.WaitAny WaitAll都是阻塞当前线程，等任务完成后执行操作
//Delay 异步等待
//ContinueWhenAny ContinueWhenAll 非阻塞式的回调；而且使用的线程可能是新线程，也可能是刚完成任务的线程，唯一不可能是主线程
static void Main(string[] args)
{
{
Task task = new Task(() => { Console.WriteLine("开始线程1"); });
task.Start();
task.ContinueWith(t =>
{
Console.WriteLine($"线程完成,{Thread.CurrentThread.ManagedThreadId.ToString("00")}");
}); //回调
}
{
Task<int> task = Task.Run(() =>
{
Console.WriteLine("开始线程2");
return DateTime.Now.Year;
});
Console.WriteLine(task.Result);//获取返回值，会阻塞
}
{
TaskFactory taskFactory = Task.Factory;
Task task = taskFactory.StartNew(() => Console.WriteLine("开始线程3"));
}
//{
// ThreadPool.SetMaxThreads(8, 8);
// //线程池是单例的，全局唯一的
// //设置后，同时并发的Task只有8个；而且线程是复用的；
// //Task的线程是源于线程池
// //全局的，请不要这样设置！！！
// for (int i = 0; i < 100; i++)
// {
// int k = i;
// Task.Run(() =>
// {
// Console.WriteLine($"This is {k} running ThreadId={Thread.CurrentThread.ManagedThreadId.ToString("00")}");
// Thread.Sleep(2000);
// });
// }
//}
//{
// {
// Stopwatch stopwatch = new Stopwatch();
// stopwatch.Start();
// Console.WriteLine("在Sleep之前");
// Thread.Sleep(2000);//同步等待--当前线程等待2s 然后继续
// Console.WriteLine("在Sleep之后");
// stopwatch.Stop();
// Console.WriteLine($"Sleep耗时{stopwatch.ElapsedMilliseconds}");
// }
// {
// Stopwatch stopwatch = new Stopwatch();
// stopwatch.Start();
// Console.WriteLine("在Delay之前");
// Task task = Task.Delay(2000)
// .ContinueWith(t =>
// {
// stopwatch.Stop();
// Console.WriteLine($"Delay耗时{stopwatch.ElapsedMilliseconds}");
// Console.WriteLine($"This is ThreadId={Thread.CurrentThread.ManagedThreadId.ToString("00")}");
// });//异步等待--等待2s后启动新任务
// Console.WriteLine("在Delay之后");
// //stopwatch.Stop();
// //Console.WriteLine($"Delay耗时{stopwatch.ElapsedMilliseconds}");
// }
//}
//{
// //开发可以多人合作---多线程--提升性能
// TaskFactory taskFactory = new TaskFactory();
// List<Task> taskList = new List<Task>();
// taskList.Add(Task.Run(() => Coding("张三", "Portal")));
// taskList.Add(taskFactory.StartNew(() => Coding("李四", " DBA ")));
// taskList.Add(taskFactory.StartNew(() => Coding("王五", "Client")));
// taskList.Add(taskFactory.StartNew(() => Coding("赵六", "BackService")));
// taskList.Add(taskFactory.StartNew(() => Coding("田七", "Wechat")));
// taskFactory.ContinueWhenAny(taskList.ToArray(), array =>
// {
// Console.WriteLine($"开发完成 准备测试,{ Thread.CurrentThread.ManagedThreadId.ToString("00")}");
// });
// taskFactory.ContinueWhenAll(taskList.ToArray(), array =>
// {
// Console.WriteLine($"项目全部开发完成准备测试,{Thread.CurrentThread.ManagedThreadId.ToString("00")}");
// });
// ////ContinueWhenAny ContinueWhenAll 非阻塞式的回调；而且使用的线程可能是新线程，也可能是刚完成任务的线程，唯一不可能是主线程
// ////阻塞当前线程，等着任意一个任务完成
// Task.WaitAny(taskList.ToArray());
// //Task.WaitAny(taskList.ToArray(), 1000);//也可以限时等待
// Console.WriteLine($"有人员完成开发，准备部署环境,{ Thread.CurrentThread.ManagedThreadId.ToString("00")}");
// //需要能够等待全部线程完成任务再继续 阻塞当前线程，等着全部任务完成
// Task.WaitAll(taskList.ToArray());
// Console.WriteLine($"项目开发完成,{ Thread.CurrentThread.ManagedThreadId.ToString("00")}");
// ////Task.WaitAny WaitAll都是阻塞当前线程，等任务完成后执行操作
// ///阻塞卡界面，是为了并发以及顺序控制
//}
//{
// TaskFactory taskFactory = new TaskFactory();
// List<Task> taskList = new List<Task>();
// taskList.Add(Task.Run(() => Coding("张三", "Portal")));
// taskList.Add(taskFactory.StartNew((o) => Coding("李四", " DBA "),"李四"));
// taskList.Add(taskFactory.StartNew((o) => Coding("王五", "Client"), "王五"));
// taskList.Add(taskFactory.StartNew((o) => Coding("赵六", "BackService"), "赵六"));
// taskList.Add(taskFactory.StartNew((o) => Coding("田七", "Wechat"), "田七"));
// //输出谁先完成
// taskFactory.ContinueWhenAny(taskList.ToArray(), array =>
// {
// Console.WriteLine($"{array.AsyncState},开发完成 准备测试,{ Thread.CurrentThread.ManagedThreadId.ToString("00")}");
// });
// taskFactory.ContinueWhenAll(taskList.ToArray(), array =>
// {
// Console.WriteLine($"项目全部开发完成准备测试,{Thread.CurrentThread.ManagedThreadId.ToString("00")}");
// });
//}
//{
// List<Task> tasks = new List<Task>();
// //控制线程数量为20个
// for (int i = 0; i < 10000; i++)
// {
// int k = i;
// if (tasks.Count(t => t.Status != TaskStatus.RanToCompletion) >= 20)
// {
// Task.WaitAny(tasks.ToArray());
// tasks = tasks.Where(t => t.Status != TaskStatus.RanToCompletion).ToList();
// }
// tasks.Add(Task.Run(() =>
// {
// Console.WriteLine($"This is {k} running ThreadId={Thread.CurrentThread.ManagedThreadId.ToString("00")}");
// Thread.Sleep(2000);
// }));
// }
//}
/// <summary>
/// 模拟Coding过程
/// </summary>
/// <param name="name"></param>
/// <param name="projectName"></param>
void Coding(string name, string projectName)
{
Console.WriteLine($"****************Coding Start {name} {projectName} {Thread.CurrentThread.ManagedThreadId.ToString("00")} {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")}***************");
long lResult = 0;
for (int i = 0; i < 1_000_000_000; i++)
{
lResult += i;
}
Console.WriteLine($"****************Coding End {name} {projectName} {Thread.CurrentThread.ManagedThreadId.ToString("00")} {DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff")} {lResult}***************");
}
Console.ReadKey();
}
}
