blockKlass.cpp

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/* Copyright 1994, 1995 LongView Technologies L.L.C. $Revision: 1.36 $ */
/* Copyright (c) 2006, Sun Microsystems, Inc.
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# include "incls/_precompiled.incl"
# include "incls/_blockKlass.cpp.incl"

klassOop blockClosureKlass::blockKlassFor(int numberOfArguments) {
  switch (numberOfArguments) {
    case 0: return Universe::zeroArgumentBlockKlassObj();  break;
    case 1: return Universe::oneArgumentBlockKlassObj();   break;
    case 2: return Universe::twoArgumentBlockKlassObj();   break;
    case 3: return Universe::threeArgumentBlockKlassObj(); break;
    case 4: return Universe::fourArgumentBlockKlassObj();  break;
    case 5: return Universe::fiveArgumentBlockKlassObj();  break;
    case 6: return Universe::sixArgumentBlockKlassObj();   break;
    case 7: return Universe::sevenArgumentBlockKlassObj(); break;
    case 8: return Universe::eightArgumentBlockKlassObj(); break;
    case 9: return Universe::nineArgumentBlockKlassObj();  break;
  }
 fatal("cannot handle block with more than 9 arguments");
 return NULL;
}

bool blockClosureKlass::oop_verify(oop obj) {
  bool flag = Klass::oop_verify(obj);
  // FIX LATER
  return flag;
}

void set_blockClosureKlass_vtbl(Klass* k) {
  blockClosureKlass o;
  k->set_vtbl_value(o.vtbl_value());
}

oop blockClosureKlass::allocateObject() {
  klassOop k    = as_klassOop();
  // allocate
  blockClosureOop obj =
    as_blockClosureOop(Universe::allocate(blockClosureOopDesc::object_size(), (memOop*)&k));
  // header
  obj->initialize_header(false, k);
  // %not initialized by the interpreter
  // obj->addr()->_method         = (methodOop)      smiOop_zero;
  // obj->addr()->_lexical_scope  = (heapContextOop) smiOop_zero;
  return obj;
}

klassOop blockClosureKlass::create_subclass(mixinOop mixin, Format format) {
  return NULL;
}

int blockClosureKlass::oop_scavenge_contents(oop obj) {
  // header
  memOop(obj)->scavenge_header();
  // %note _method can be ignored since methods are tenured 
  scavenge_oop((oop*) &blockClosureOop(obj)->addr()->_lexical_scope);
  return blockClosureOopDesc::object_size();
}

int blockClosureKlass::oop_scavenge_tenured_contents(oop obj) {
  // header
  memOop(obj)->scavenge_tenured_header();
  // %note _method can be ignored since methods are tenured 
  scavenge_tenured_oop((oop*) &blockClosureOop(obj)->addr()->_lexical_scope);
  return blockClosureOopDesc::object_size();
}

void blockClosureKlass::oop_follow_contents(oop obj) {
  // header
  memOop(obj)->follow_header();
  MarkSweep::reverse_and_push((oop*) &blockClosureOop(obj)->addr()->_methodOrJumpAddr);
  MarkSweep::reverse_and_push((oop*) &blockClosureOop(obj)->addr()->_lexical_scope);
}

void blockClosureKlass::oop_layout_iterate(oop obj, ObjectLayoutClosure* blk) {
  // header
  memOop(obj)->layout_iterate_header(blk);
  blk->do_oop("method", (oop*) &blockClosureOop(obj)->addr()->_methodOrJumpAddr);
  blk->do_oop("scope",  (oop*) &blockClosureOop(obj)->addr()->_lexical_scope);
}

void blockClosureKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
  // header
  memOop(obj)->oop_iterate_header(blk);
  blk->do_oop((oop*) &blockClosureOop(obj)->addr()->_methodOrJumpAddr);
  blk->do_oop((oop*) &blockClosureOop(obj)->addr()->_lexical_scope);
}

int blockClosureKlass::number_of_arguments() const {
  klassOop k = klassOop(this);          // C++ bogosity alert
  if (k == Universe::zeroArgumentBlockKlassObj())  return 0;
  if (k == Universe::oneArgumentBlockKlassObj())   return 1;
  if (k == Universe::twoArgumentBlockKlassObj())   return 2;
  if (k == Universe::threeArgumentBlockKlassObj()) return 3;
  if (k == Universe::fourArgumentBlockKlassObj())  return 4;
  if (k == Universe::fiveArgumentBlockKlassObj())  return 5;
  if (k == Universe::sixArgumentBlockKlassObj())   return 6;
  if (k == Universe::sevenArgumentBlockKlassObj()) return 7;
  if (k == Universe::eightArgumentBlockKlassObj()) return 8;
  if (k == Universe::nineArgumentBlockKlassObj())  return 9;
  fatal("unknown block closure class");
  return 0;
}

void blockClosureKlass::oop_print_value_on(oop obj, outputStream* st) {
  if (PrintObjectID) {
    memOop(obj)->print_id_on(st);
    st->print("-");
  }
  st->print("[] in ");
  methodOop method = blockClosureOop(obj)->method();
  method->home()->selector()->print_symbol_on(st);
  st->print("(scope = ");
  blockClosureOop(obj)->lexical_scope()->print_value_on(st);
  st->print(")");
}

void set_contextKlass_vtbl(Klass* k) {
  contextKlass o;
  k->set_vtbl_value(o.vtbl_value());
}

oop contextKlass::allocateObjectSize(int num_of_temps) {
  klassOop k        = as_klassOop();
  int      obj_size = contextOopDesc::header_size() + num_of_temps;
  // allocate
  contextOop obj = as_contextOop(Universe::allocate(obj_size, (memOop*)&k));
  // header
  obj->set_klass_field(k);
  //%clean the up later
  //  hash value must by convention be different from 0 (check markOop.hpp)
  obj->set_mark(markOopDesc::tagged_prototype()->set_hash(num_of_temps + 1));
  // indexables
  memOop(obj)->initialize_body(contextOopDesc::header_size(), obj_size);
  return obj;
}

klassOop contextKlass::create_subclass(mixinOop mixin, Format format) {
  return NULL;
}

contextOop contextKlass::allocate_context(int num_of_temps) {
  contextKlass* ck = (contextKlass*) contextKlassObj->klass_part();
  return contextOop(ck->allocateObjectSize(num_of_temps));
}

int contextKlass::oop_scavenge_contents(oop obj) {
  int size = contextOop(obj)->object_size();
  // header
  memOop(obj)->scavenge_header();
  scavenge_oop((oop*) &contextOop(obj)->addr()->_parent);
  // temporaries
  memOop(obj)->scavenge_body(contextOopDesc::header_size(), size);
  return size;
}

int contextKlass::oop_scavenge_tenured_contents(oop obj) {
  int size = contextOop(obj)->object_size();
  // header
  memOop(obj)->scavenge_tenured_header();
  scavenge_tenured_oop((oop*) &contextOop(obj)->addr()->_parent);
  // temporaries
  memOop(obj)->scavenge_tenured_body(contextOopDesc::header_size(), size);
  return size;
}

void contextKlass::oop_follow_contents(oop obj) {
  // header
  memOop(obj)->follow_header();
  MarkSweep::reverse_and_push((oop*) &contextOop(obj)->addr()->_parent);
  // temporaries

  // we have to find the header word in order to compute object size.
  // %implementation note:
  //   implement this another way if possible
  oop* root_or_mark = (oop*) memOop(obj)->mark();
  while (!oop(root_or_mark)->is_mark()) {
    root_or_mark = (oop*) *root_or_mark;
  }
  int len = markOop(root_or_mark)->hash() - 1;
  memOop(obj)->follow_body(contextOopDesc::header_size(), contextOopDesc::header_size() + len);
}

void contextKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
  // header
  memOop(obj)->oop_iterate_header(blk);
  blk->do_oop((oop*) &contextOop(obj)->addr()->_parent);
  // temporaries
  memOop(obj)->oop_iterate_body(blk, contextOopDesc::header_size(), oop_size(obj));
}

void contextKlass::oop_layout_iterate(oop obj, ObjectLayoutClosure* blk) {
  // header
  memOop(obj)->layout_iterate_header(blk);
  blk->do_oop("home", (oop*) &contextOop(obj)->addr()->_parent);
  // temporaries
  memOop(obj)->layout_iterate_body(blk, contextOopDesc::header_size(), oop_size(obj));
}

int contextKlass::oop_size(oop obj) const {
  return contextOop(obj)->object_size();
}

void contextKlass::oop_print_value_on(oop obj, outputStream* st) {
  memOopKlass::oop_print_value_on(obj, st);
  assert(obj->is_context(), "must be context");
  contextOop con = contextOop(obj);
  st->print("{");
  con->print_home_on(st);
  st->print(" |%d}", con->length());
}

void contextKlass::oop_print_on(oop obj, outputStream* st) {
  memOopKlass::oop_print_value_on(obj, st);
  st->cr();
  assert(obj->is_context(), "must be context");
  contextOop con = contextOop(obj);
  st->print(" home: ");
  con->print_home_on(st);
  st->cr();
  for (int index = 0; index < con->length(); index++) {
    st->print(" - %d: ", index);
    con->obj_at(index)->print_value_on(st);
    st->cr();
  }
}

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