Enhancement of finalizeObject

[Godmar Back]

 Actually, if you wanted to make it even faster, look at the bytecode of 
the finalize method.  If it's an empty function, don't bother invoking it.
Can you implement that?

	- Godmar

> 
> The finalizeObject function lookups a final method every time. 
> It has much overhead in GC, especially with JIT mode.
> Following codes make two times faster!!
> 
> Jongwon Kim
> 
> ------------------------------------------------------------------------------------
> 
> -- classMethod.h --
> ..
> struct Hjava_lang_Class {
>  Hjava_lang_Object head;  /* A class is an object too */
> ..
>  Hjava_lang_ClassLoader* loader;
>  char   state;
>  char   final;
> #ifdef FREEFISH_FIX
>  Method*   finalMethod; /* pointer for final Method */
> #endif
> };
> 
> #ifdef FREEFISH_FIX
> #define CLASS_FINAL_METHOD(CLASS) ((CLASS)->finalMethod)
> #endif
> 
> --- gc-incremental.c ---
> 
> static
> void
> finalizeObject(void* ob)
> {
>  Method* final;
> #ifndef FREEFISH_FIX
>  final = findMethod(OBJECT_CLASS((Hjava_lang_Object*)ob), final_name, void_signature);
> #else
>  Hjava_lang_Class* class = OBJECT_CLASS((Hjava_lang_Object*)ob);
> 
>  if ((final = CLASS_FINAL_METHOD(class)) == 0) {
>   final = findMethod(OBJECT_CLASS((Hjava_lang_Object*)ob), final_name, void_signature);
>   CLASS_FINAL_METHOD(class) = final;
>  } 
> #endif
>  callMethodA(final, METHOD_INDIRECTMETHOD(final), (Hjava_lang_Object*)ob, 0, 0);
>  /* 
>   * make sure thread objects get detached 
>   */
>  if (soft_instanceof(ThreadClass, ob)) {
>   finalizeThread((Hjava_lang_Thread*)ob);
>  }
> }
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~
>     Kim, jongwon
> 
>     freefish at chollian.net
>     freefish at netsgo.com
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~
>