Enhancement of finalizeObject

[Kim, Jongwon (freefish)]

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

~~~~~~~~~~~~~~~~~~~~~~~~~