sticky_mark_sweep.h revision 6fac447555dc94a935b78198479cce645c837b89 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_GC_COLLECTOR_STICKY_MARK_SWEEP_H_
18#define ART_RUNTIME_GC_COLLECTOR_STICKY_MARK_SWEEP_H_
19
20#include "base/macros.h"
21#include "locks.h"
22#include "partial_mark_sweep.h"
23
24namespace art {
25namespace gc {
26namespace collector {
27
28class StickyMarkSweep FINAL : public PartialMarkSweep {
29 public:
30  GcType GetGcType() const OVERRIDE {
31    return kGcTypeSticky;
32  }
33
34  explicit StickyMarkSweep(Heap* heap, bool is_concurrent, const std::string& name_prefix = "");
35  ~StickyMarkSweep() {}
36
37 protected:
38  // Bind the live bits to the mark bits of bitmaps for all spaces, all spaces other than the
39  // alloc space will be marked as immune.
40  void BindBitmaps() OVERRIDE SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
41
42  void MarkReachableObjects() OVERRIDE
43      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_)
44      EXCLUSIVE_LOCKS_REQUIRED(Locks::heap_bitmap_lock_);
45
46  void Sweep(bool swap_bitmaps) OVERRIDE EXCLUSIVE_LOCKS_REQUIRED(Locks::heap_bitmap_lock_);
47
48  // Don't need to do anything special here since we scan all the cards which may have references
49  // to the newly allocated objects.
50  void UpdateAndMarkModUnion() OVERRIDE { }
51
52 private:
53  DISALLOW_COPY_AND_ASSIGN(StickyMarkSweep);
54};
55
56}  // namespace collector
57}  // namespace gc
58}  // namespace art
59
60#endif  // ART_RUNTIME_GC_COLLECTOR_STICKY_MARK_SWEEP_H_
61