C++ oop::is_constantPoolCache方法代码示例

void constantPoolCacheKlass::oop_print_on(oop obj, outputStream* st) {
  assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
  constantPoolCacheOop cache = (constantPoolCacheOop)obj;
  // super print
  arrayKlass::oop_print_on(obj, st);
  // print constant pool cache entries
  for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->print(st, i);
}

void constantPoolCacheKlass::oop_follow_contents(oop obj) {
  assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
  constantPoolCacheOop cache = (constantPoolCacheOop)obj;
  // Performance tweak: We skip iterating over the klass pointer since we
  // know that Universe::constantPoolCacheKlassObj never moves.
  // gc of constant pool cache instance variables
  MarkSweep::mark_and_push((oop*)cache->constant_pool_addr());
  // gc of constant pool cache entries
  int i = cache->length();
  while (i-- > 0) cache->entry_at(i)->follow_contents();
}

object_type ClassifyObjectClosure::classify_object(oop obj, bool count) {
  object_type type = unknown_type;

  Klass* k = obj->blueprint();

  if (k->as_klassOop() == SystemDictionary::Object_klass()) {
    tty->print_cr("Found the class!");
  }

  if (count) {
    k->set_alloc_count(k->alloc_count() + 1);
  }

  if (obj->is_instance()) {
    if (k->oop_is_instanceRef()) {
      type = instanceRef_type;
    } else {
      type = instance_type;
    }
  } else if (obj->is_typeArray()) {
    type = typeArray_type;
  } else if (obj->is_objArray()) {
    type = objArray_type;
  } else if (obj->is_symbol()) {
    type = symbol_type;
  } else if (obj->is_klass()) {
    Klass* k = ((klassOop)obj)->klass_part();
    if (k->oop_is_instance()) {
      type = instanceKlass_type;
    } else {
      type = klass_type;
    }
  } else if (obj->is_method()) {
    type = method_type;
  } else if (obj->is_constMethod()) {
    type = constMethod_type;
  } else if (obj->is_methodData()) {
    ShouldNotReachHere();
  } else if (obj->is_constantPool()) {
    type = constantPool_type;
  } else if (obj->is_constantPoolCache()) {
    type = constantPoolCache_type;
  } else if (obj->is_compiledICHolder()) {
    type = compiledICHolder_type;
  } else {
    ShouldNotReachHere();
  }

  assert(type != unknown_type, "found object of unknown type.");
  return type;
}

int constantPoolCacheKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
  assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
  constantPoolCacheOop cache = (constantPoolCacheOop)obj;
  // Get size before changing pointers.
  // Don't call size() or oop_size() since that is a virtual call.
  int size = cache->object_size();
  // Performance tweak: We skip iterating over the klass pointer since we
  // know that Universe::constantPoolCacheKlassObj never moves.
  // iteration over constant pool cache instance variables
  blk->do_oop((oop*)cache->constant_pool_addr());
  // iteration over constant pool cache entries
  for (int i = 0; i < cache->length(); i++) cache->entry_at(i)->oop_iterate(blk);
  return size;
}

int
constantPoolCacheKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
  assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
  constantPoolCacheOop cache = (constantPoolCacheOop)obj;

  // Iteration over constant pool cache instance variables
  PSParallelCompact::adjust_pointer((oop*)cache->constant_pool_addr());

  // iteration over constant pool cache entries
  for (int i = 0; i < cache->length(); ++i) {
    cache->entry_at(i)->update_pointers();
  }

  return cache->object_size();
}

void constantPoolCacheKlass::oop_push_contents(PSPromotionManager* pm,
                                               oop obj) {
  assert(obj->is_constantPoolCache(), "should be constant pool");
  if (ScavengeRootsInCode) {
    constantPoolCacheOop cache = (constantPoolCacheOop)obj;
    // during a scavenge, it is safe to inspect my pool, since it is perm
    constantPoolOop pool = cache->constant_pool();
    assert(pool->is_constantPool(), "should be constant pool");
    for (int i = 0; i < cache->length(); i++) {
      ConstantPoolCacheEntry* e = cache->entry_at(i);
      oop* p = (oop*)&e->_f1;
      if (PSScavenge::should_scavenge(p))
        pm->claim_or_forward_depth(p);
      assert(!(e->is_vfinal() && PSScavenge::should_scavenge((oop*)&e->_f2)),
             "no live oops here");
    }
  }
}

int
constantPoolCacheKlass::oop_update_pointers(ParCompactionManager* cm, oop obj,
					    HeapWord* beg_addr,
					    HeapWord* end_addr) {
  assert(obj->is_constantPoolCache(), "obj must be constant pool cache");
  constantPoolCacheOop cache = (constantPoolCacheOop)obj;

  // Iteration over constant pool cache instance variables
  heapRef* p;
  p = (heapRef*)cache->constant_pool_addr();
  PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);

  // Iteration over constant pool cache entries
  for (int i = 0; i < cache->length(); ++i) {
    cache->entry_at(i)->update_pointers(beg_addr, end_addr);
  }
  return cache->object_size();
}

int constantPoolCacheKlass::oop_size(oop obj) const {
  assert(obj->is_constantPoolCache(), "must be constantPool");
  return constantPoolCacheOop(obj)->object_size();
}

bool constantPoolCacheKlass::oop_is_conc_safe(oop obj) const {
  assert(obj->is_constantPoolCache(), "should be constant pool");
  return constantPoolCacheOop(obj)->is_conc_safe();
}

void constantPoolCacheKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) {
  assert(obj->is_constantPoolCache(), "should be constant pool");
}