/*
 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */

#include "precompiled.hpp"
#include "gc/shared/modRefBarrierSet.inline.hpp"
#include "gc/shared/collectedHeap.hpp"
#include "memory/universe.hpp"
#include "oops/klass.hpp"
#include "oops/objArrayKlass.inline.hpp"

// count is number of array elements being written
void ModRefBarrierSet::static_write_ref_array_pre(HeapWord* start, size_t count) {
  assert(count <= (size_t)max_intx, "count too large");
  ModRefBarrierSet *bs = barrier_set_cast<ModRefBarrierSet>(Universe::heap()->barrier_set());
  if (UseCompressedOops) {
    bs->write_ref_array_pre((narrowOop*)start, (int)count, false);
  } else {
    bs->write_ref_array_pre(      (oop*)start, (int)count, false);
  }
}

// count is number of array elements being written
void ModRefBarrierSet::static_write_ref_array_post(HeapWord* start, size_t count) {
  // simply delegate to instance method
  ModRefBarrierSet *bs = barrier_set_cast<ModRefBarrierSet>(Universe::heap()->barrier_set());
  bs->write_ref_array(start, count);
}

void ModRefBarrierSet::klass_update_barrier_set(Klass* klass, oop* p, oop v) {
  klass->record_modified_oops();
}

Klass* ModRefBarrierSet::bound_for_array(oop obj) {
  return ObjArrayKlass::cast(obj->klass())->element_klass();
}

bool ModRefBarrierSet::is_bounded_by(oop obj, Klass* klass) {
  return obj->klass()->is_subtype_of(klass);
}