Clean up gen 0 : GC « Development « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Development
3. GC

using System;

public class MyClass : IDisposable
{
  ~MyClass()
  {
    Console.WriteLine("In destructor!");
  }
  
  public void Dispose()
  {
    Console.WriteLine("In Dispose() for {0}!");
    GC.SuppressFinalize(this);
  }
}

public class MainClass
{
  public static void Main(string[] args)
  {    
    MyClass c1, c2, c3, c4;

    c1 = new MyClass();
    c2 = new MyClass();
    c3 = new MyClass();
    c4 = new MyClass();
    
    Console.WriteLine("\n***** Disposing c1 and c3 *****");
    c1.Dispose();
    c3.Dispose();

    Console.WriteLine("***** Sweaping gen 0 *****");
    GC.Collect(0);  

    Console.WriteLine("\n***** New generations *****");
    Console.WriteLine("C1 is gen {0}", GC.GetGeneration(c1));
    Console.WriteLine("C2 is gen {0}", GC.GetGeneration(c2));
    Console.WriteLine("C3 is gen {0}", GC.GetGeneration(c3));
    Console.WriteLine("C4 is gen {0}", GC.GetGeneration(c4));
  }
}

***** Disposing c1 and c3 *****
In Dispose() for {0}!
In Dispose() for {0}!
***** Sweaping gen 0 *****

***** New generations *****
C1 is gen 1
C2 is gen 1
C3 is gen 1
C4 is gen 1
In destructor!
In destructor!