1/*
2 * Copyright (c) 2000, 2017, 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_SERIAL_MARKSWEEP_INLINE_HPP
26#define SHARE_VM_GC_SERIAL_MARKSWEEP_INLINE_HPP
27
28#include "gc/serial/markSweep.hpp"
29#include "memory/metaspaceShared.hpp"
30#include "memory/universe.hpp"
31#include "oops/markOop.inline.hpp"
32#include "oops/oop.inline.hpp"
33#if INCLUDE_ALL_GCS
34#include "gc/g1/g1Allocator.inline.hpp"
35#endif // INCLUDE_ALL_GCS
36
37inline bool MarkSweep::is_closed_archive_object(oop object) {
38#if INCLUDE_ALL_GCS
39  return G1ArchiveAllocator::is_closed_archive_object(object);
40#else
41  return false;
42#endif
43}
44
45inline bool MarkSweep::is_open_archive_object(oop object) {
46#if INCLUDE_ALL_GCS
47  return G1ArchiveAllocator::is_open_archive_object(object);
48#else
49  return false;
50#endif
51}
52
53inline bool MarkSweep::is_archive_object(oop object) {
54#if INCLUDE_ALL_GCS
55  return G1ArchiveAllocator::is_archive_object(object);
56#else
57  return false;
58#endif
59}
60
61inline int MarkSweep::adjust_pointers(oop obj) {
62  return obj->oop_iterate_size(&MarkSweep::adjust_pointer_closure);
63}
64
65template <class T> inline void MarkSweep::adjust_pointer(T* p) {
66  T heap_oop = oopDesc::load_heap_oop(p);
67  if (!oopDesc::is_null(heap_oop)) {
68    oop obj     = oopDesc::decode_heap_oop_not_null(heap_oop);
69    assert(Universe::heap()->is_in(obj), "should be in heap");
70
71    oop new_obj = oop(obj->mark()->decode_pointer());
72
73    assert(is_archive_object(obj) ||             // no forwarding of archive objects
74           new_obj != NULL ||                         // is forwarding ptr?
75           obj->mark() == markOopDesc::prototype() || // not gc marked?
76           (UseBiasedLocking && obj->mark()->has_bias_pattern()),
77           // not gc marked?
78           "should be forwarded");
79
80#ifndef PRODUCT
81    // open_archive objects are marked by GC. Their mark should
82    // not have forwarding ptr.
83    if (is_open_archive_object(obj)) {
84      assert(new_obj == NULL, "archive heap object has forwarding ptr");
85    }
86#endif
87
88    if (new_obj != NULL) {
89      if (!is_closed_archive_object(obj)) {
90        assert(Universe::heap()->is_in_reserved(new_obj),
91              "should be in object space");
92        oopDesc::encode_store_heap_oop_not_null(p, new_obj);
93      }
94    }
95  }
96}
97
98#endif // SHARE_VM_GC_SERIAL_MARKSWEEP_INLINE_HPP
99