LOOM.NET : An AOP Weaver Library

LOOM.NET 是波茨坦大学的一个研究项目, 它采用 Emit IL 的方式实现代码与Aspect的编织, 现在有两个子项目, 分别是Runtime weaver: Rapier-LOOM.NET 和 Static weaver: Gripper-LOOM.NET.
下面的示例代码演示了如何使用 Rapier-LOOM.NET 来监视一个方法的运行时间

using System;

using System.Collections.Generic;

using System.Text;

using Loom;

using Loom.JoinPoints;

namespace Monitoring

{

class Program

{

static void Main(string[] args)

{

MonitoringAspect monAspect = new MonitoringAspect();

// interweave with the monitoring aspect

MathLibrary lib = Weaver.Create<MathLibrary>(monAspect);

ulong number = 30;

Console.WriteLine("Computing {0}. fibonacci number.", number);

// monitoring aspect calculates the time of execution

// and display on the console

ulong result = lib.Fibonacci(number);

Console.WriteLine("Result is {0}.", result);

Console.Read();

}

}

public class MathLibrary

{

public virtual ulong Fibonacci(ulong a)

{

return calcFibonacci(a);

}

// private methods - not matched

private ulong calcFibonacci(ulong a)

{

if (a > 40)

throw new ApplicationException("Error: Can only compute the first 40 fibonacci numbers.");

if (a <= 2)

return 1;

else

return (calcFibonacci(a - 1) + calcFibonacci(a - 2));

}

}

public class MonitoringAspect : Aspect

{

[IncludeAll]

[Call(Advice.Before)]

public void Start_Monitor([JPContext] Context context, params object[] args)

{

Stopwatch sw = new Stopwatch();

sw.Start();

context.Tag = sw;

}

[IncludeAll]

[Call(Advice.After)]

public void Stop_Monitor([JPContext] Context context, params object[] args)

{

Stopwatch sw = (Stopwatch)context.Tag;

sw.Stop();

Console.WriteLine("{0} done in {1}ms.", context.CurrentMethod.Name, sw.ElapsedMilliseconds);

}

}

}

LOOM.NET 主页
var hideSidebar = true;