/*

 * Copyright (c) 2018, Red Hat, Inc. All rights reserved.

 *

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#include "precompiled.hpp"

#include "gc/shenandoah/shenandoahBarrierSet.hpp"

#include "gc/shenandoah/shenandoahRuntime.hpp"

#include "gc/shenandoah/shenandoahThreadLocalData.hpp"

#include "runtime/interfaceSupport.inline.hpp"

#include "oops/oop.inline.hpp"

void ShenandoahRuntime::write_ref_array_pre_oop_entry(oop* dst, size_t length) {

  ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set();

  bs->write_ref_array_pre(dst, length, false);

}

void ShenandoahRuntime::write_ref_array_pre_narrow_oop_entry(narrowOop* dst, size_t length) {

  ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set();

  bs->write_ref_array_pre(dst, length, false);

}

void ShenandoahRuntime::write_ref_array_post_entry(HeapWord* dst, size_t length) {

  ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set();

  bs->ShenandoahBarrierSet::write_ref_array(dst, length);

}

// Shenandoah pre write barrier slowpath

JRT_LEAF(void, ShenandoahRuntime::write_ref_field_pre_entry(oopDesc* orig, JavaThread *thread))

  if (orig == NULL) {

    assert(false, "should be optimized out");

    return;

  }

  shenandoah_assert_correct(NULL, orig);

  // store the original value that was in the field reference

  assert(ShenandoahThreadLocalData::satb_mark_queue(thread).is_active(), "Shouldn't be here otherwise");

  ShenandoahThreadLocalData::satb_mark_queue(thread).enqueue_known_active(orig);

JRT_END

  return (oopDesc*) result;

JRT_END

// Shenandoah clone barrier: makes sure that references point to to-space

// in cloned objects.

JRT_LEAF(void, ShenandoahRuntime::shenandoah_clone_barrier(oopDesc* obj))

  ShenandoahBarrierSet::barrier_set()->write_region(MemRegion((HeapWord*) obj, obj->size()));

JRT_END