学习笔记(11)--NetFramework Thread版本
作者:互联网
NetFramework 1.0 1.1,Thread是最初版本,功能非常强大,唯一的前台线程。
ThreadStart threadStart = new ThreadStart(() =>
{
Console.WriteLine($"************ Thread start。。。{Thread.CurrentThread.ManagedThreadId}");
Thread.Sleep(2000);
Console.WriteLine($"************ Thread end。。。{Thread.CurrentThread.ManagedThreadId}");
});
Thread thread = new Thread(threadStart);
thread.Start();
直到NetFramework 4.7版本,在1.01.1版本都这么强大了,为什么还会有新的版本出来,正是它强大过头了。1.01.1版本的线程是没有管控的,可以new无限个Thread出来,容易出问题。
到NetFramework 2.0版本,ThreadPool线程池,池化线程管理,进程唯一一个实例,其中会默认申请10个线程,线程需要线程时,就先池子申请,获取并使用,用完后回归线程池;如果线程不够用,会由池子CLR申请,如果闲着太多,就池子负责释放,能起到线程重用,管控线程最大数量。
WaitCallback callback = new WaitCallback(ar =>
{
Console.WriteLine($"************ callback start。。。{Thread.CurrentThread.ManagedThreadId}");
Thread.Sleep(2000);
Console.WriteLine($"************ callback end。。。{Thread.CurrentThread.ManagedThreadId}");
});
ThreadPool.QueueUserWorkItem(callback);
到NetFramework 3.0版本Task 基于线程池的线程 API丰富。
Action action = new Action(() =>
{
Console.WriteLine($"************ Task start。。。{Thread.CurrentThread.ManagedThreadId}");
Thread.Sleep(2000);
Console.WriteLine($"************ Task end。。。{Thread.CurrentThread.ManagedThreadId}");
});
Task.Run(action);
.NetFramework 4.0 Parallel对Tack封装,主线程参与计算 option可以限制最大线程数
Parallel.Invoke(() =>
{
Console.WriteLine($"************ Parallel1 start。。。{Thread.CurrentThread.ManagedThreadId}");
Thread.Sleep(2000);
Console.WriteLine($"************ Parallel1 end。。。{Thread.CurrentThread.ManagedThreadId}");
},
() =>
{
Console.WriteLine($"************ Parallel2 start。。。{Thread.CurrentThread.ManagedThreadId}");
Thread.Sleep(2000);
Console.WriteLine($"************ Parallel2 end。。。{Thread.CurrentThread.ManagedThreadId}");
},
() =>
{
Console.WriteLine($"************ Parallel3 start。。。{Thread.CurrentThread.ManagedThreadId}");
Thread.Sleep(2000);
Console.WriteLine($"************ Parallel3 end。。。{Thread.CurrentThread.ManagedThreadId}"); },
() =>
{
Console.WriteLine($"************ Parallel4 start。。。{Thread.CurrentThread.ManagedThreadId}");
Thread.Sleep(2000);
Console.WriteLine($"************ Parallel4 end。。。{Thread.CurrentThread.ManagedThreadId}");
});
标签:11,NetFramework,Console,CurrentThread,Thread,ManagedThreadId,线程,WriteLine 来源: https://blog.csdn.net/qq_44484973/article/details/91359970