Releasing Nested Objects in Rotor

Chris Tavares is making more progress finishing up the Ref-Counting in Rotor project:

class FinalizerObj {
  int n;

  public FinalizerObj( int n ) {
    this.n = n;
    Console.WriteLine(“Created Finalizer object {0}”, n);
  }
 
  ~FinalizerObj() {
    Console.WriteLine(“Finalizing finalizer object {0}”, n);
  }
}
 
class FinalizerContainingObj {
  FinalizerObj subObj1;
  int n;
  FinalizerObj subObj2;
 
  public FinalizerContainingObj( int n ) {
    this.n = n;
    subObj1 = new FinalizerObj(n * 100);
    subObj2 = new FinalizerObj((n * 100) + 1);
    Console.WriteLine(“Creating containing object {0}”, n);
  }
 
  ~FinalizerContainingObj( ) {
    Console.WriteLine(“Finalizing finalizer containing obj {0}”, n);
  }
}
 
class TestApp {
  static void Main() {
    for( int i = 0; i < 5; ++i ) LeakAnObj(i);
  }
 
  static void LeakAnObj(int i) {
    FinalizerContainingObj obj = new FinalizerContainingObj(i);
  }
}

Running this app under our ref-counted Rotor yields the following output:

C:\Home\Chris\Projects\Rotor\src\tests>clix FinalizerTest.exe
Created Finalizer object 0
Created Finalizer object 1
Creating containing object 0
Finalizing finalizer containing obj 0
Finalizing finalizer object 0
Finalizing finalizer object 1
Created Finalizer object 100
Created Finalizer object 101
Creating containing object 1
Finalizing finalizer containing obj 1
Finalizing finalizer object 100
Finalizing finalizer object 101
Created Finalizer object 200
Created Finalizer object 201
Creating containing object 2
Finalizing finalizer containing obj 2
Finalizing finalizer object 200
Finalizing finalizer object 201
Created Finalizer object 300
Created Finalizer object 301
Creating containing object 3
Finalizing finalizer containing obj 3
Finalizing finalizer object 300
Finalizing finalizer object 301
Created Finalizer object 400
Created Finalizer object 401
Creating containing object 4
Finalizing finalizer containing obj 4
Finalizing finalizer object 400
Finalizing finalizer object 401

In other words, all top-level and 2nd-level objects are finalized deterministically. Wahoo!