/*

 * 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.inline.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* src, oop* dst, size_t length) {

  ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set();

  bs->arraycopy_pre(src, dst, length);

}

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

  ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set();

  bs->arraycopy_pre(src, dst, length);

}

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

  ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set();

  bs->arraycopy_update(src, length);

}

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

  ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set();

  bs->arraycopy_update(src, 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

JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier(oopDesc* src))

  return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, (oop*)NULL);

JRT_END

JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_fixup(oopDesc* src, oop* load_addr))

  return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, load_addr);

JRT_END

JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_fixup_narrow(oopDesc* src, narrowOop* load_addr))

  return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, load_addr);

JRT_END

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

// in cloned objects.

JRT_LEAF(void, ShenandoahRuntime::shenandoah_clone_barrier(oopDesc* s, oopDesc* d, size_t length))

  oop src = oop(s);

  oop dst = oop(d);

  shenandoah_assert_correct(NULL, src);

  shenandoah_assert_correct(NULL, dst);

  ShenandoahBarrierSet::barrier_set()->clone_barrier(src);

  RawAccessBarrier<IS_NOT_NULL>::clone(src, dst, length);

JRT_END

JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_native(oopDesc * src))

  return (oopDesc*) ShenandoahBarrierSet::barrier_set()->oop_load_from_native_barrier(oop(src));

JRT_END