1/*
2 * Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25#ifndef SHARE_VM_GC_G1_G1REMSET_INLINE_HPP
26#define SHARE_VM_GC_G1_G1REMSET_INLINE_HPP
27
28#include "gc/g1/g1RemSet.hpp"
29#include "gc/g1/heapRegion.hpp"
30#include "gc/g1/heapRegionRemSet.hpp"
31#include "oops/oop.inline.hpp"
32
33inline uint G1RemSet::n_workers() {
34  return _g1->workers()->total_workers();
35}
36
37template <class T>
38inline void G1RemSet::par_write_ref(HeapRegion* from, T* p, uint tid) {
39  oop obj = oopDesc::load_decode_heap_oop(p);
40  if (obj == NULL) {
41    return;
42  }
43
44#ifdef ASSERT
45  // can't do because of races
46  // assert(obj == NULL || obj->is_oop(), "expected an oop");
47  assert(check_obj_alignment(obj), "not oop aligned");
48  assert(_g1->is_in_reserved(obj), "must be in heap");
49#endif // ASSERT
50
51  assert(from->is_in_reserved(p) || from->is_starts_humongous(), "p is not in from");
52
53  HeapRegion* to = _g1->heap_region_containing(obj);
54  if (from != to) {
55    assert(to->rem_set() != NULL, "Need per-region 'into' remsets.");
56    to->rem_set()->add_reference(p, tid);
57  }
58}
59
60template <class T>
61inline void UpdateRSOopClosure::do_oop_work(T* p) {
62  assert(_from != NULL, "from region must be non-NULL");
63  _rs->par_write_ref(_from, p, _worker_i);
64}
65
66#endif // SHARE_VM_GC_G1_G1REMSET_INLINE_HPP
67