/*

 * Copyright (c) 2001, 2015, 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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 */

#ifndef SHARE_VM_GC_G1_G1REMSET_INLINE_HPP

#define SHARE_VM_GC_G1_G1REMSET_INLINE_HPP

#include "gc/g1/g1RemSet.hpp"

#include "gc/g1/heapRegion.hpp"

#include "gc/g1/heapRegionRemSet.hpp"

#include "oops/oop.inline.hpp"

inline uint G1RemSet::n_workers() {

  return _g1->workers()->total_workers();

}

template <class T>

inline void G1RemSet::par_write_ref(HeapRegion* from, T* p, uint tid) {

  oop obj = oopDesc::load_decode_heap_oop(p);

  if (obj == NULL) {

    return;

  }

#ifdef ASSERT

  // can't do because of races

  // assert(obj == NULL || obj->is_oop(), "expected an oop");

  // Do the safe subset of is_oop

#ifdef CHECK_UNHANDLED_OOPS

  oopDesc* o = obj.obj();

#else

  oopDesc* o = obj;

#endif // CHECK_UNHANDLED_OOPS

  assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned");

  assert(_g1->is_in_reserved(obj), "must be in heap");

#endif // ASSERT

  assert(from->is_in_reserved(p) || from->is_starts_humongous(), "p is not in from");

  HeapRegion* to = _g1->heap_region_containing(obj);

  if (from != to) {

    assert(to->rem_set() != NULL, "Need per-region 'into' remsets.");

    to->rem_set()->add_reference(p, tid);

  }

}

template <class T>

inline void UpdateRSOopClosure::do_oop_work(T* p) {

  assert(_from != NULL, "from region must be non-NULL");

  _rs->par_write_ref(_from, p, _worker_i);

}

#endif // SHARE_VM_GC_G1_G1REMSET_INLINE_HPP