mono_gc_collect
    void
mono_gc_collect (int generation)
Parameters
generation: GC generation identifier
Remarks
	 
	 Perform a garbage collection for the given generation, higher numbers
	 mean usually older objects. Collecting a high-numbered generation
	 implies collecting also the lower-numbered generations.
	 The maximum value for 
generation can be retrieved with a call to
	 mono_gc_max_generation(), so this function is usually called as:
	
	 	mono_gc_collect (mono_gc_max_generation ());
  
    mono_gc_max_generation
    int
mono_gc_max_generation (void)
Returns
	  the maximum generation number.
Remarks
	 
	 Get the maximum generation number used by the current garbage
	 collector. The value will be 0 for the Boehm collector, 1 or more
	 for the generational collectors.