学习笔记——并行编程Parallel

Parallel 并行运算

参考资料：http://www.cnblogs.com/woxpp/p/3925094.html

1.并行运算

使用Parallel并行运算时，跟task很像，相当于task+waitall  启动多个线程计算  主线程也参与计算，就是节约了一个线程

Parallel.Invoke(() => this.DoSomethingLong("btnParallel_Click_002"),

() => this.DoSomethingLong("btnParallel_Click_001"),

() => this.DoSomethingLong("btnParallel_Click_003"),

() => this.DoSomethingLong("btnParallel_Click_004"),

() => this.DoSomethingLong("btnParallel_Click_005"));

2.使用方法：

2.1.Parallel.For

eg:Parallel.For(0, 5, t =>

{

this.DoSomethingLong($"btnParallel_Click_00{t}");

});

2.2.Parallel.Foreach

eg:Parallel.ForEach(new int[] { 0, 1, 2, 3, 4 }, t =>

{

this.DoSomethingLong($"btnParallel_Click_00{t}");

});

 2.3.设置并行运算线程数量

ParallelOptions options = new ParallelOptions()

{

MaxDegreeOfParallelism = 3

};

Parallel.ForEach(new int[] { 0, 1, 2, 3, 4 }, options, t =>

{

this.DoSomethingLong($"btnParallel_Click_00{t}");

});

或者

Parallel.ForEach(new int[] { 0, 1, 2, 3, 4 }, options, (t, state) =>

{

this.DoSomethingLong($"btnParallel_Click_00{t}");

//state.Stop();//结束全部的

//state.Break();//停止当前的

//return;

});