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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 "partial_mark_sweep.h"
22 
23 namespace art {
24 namespace gc {
25 namespace collector {
26 
27 class StickyMarkSweep final : public PartialMarkSweep {
28  public:
GetGcType()29   GcType GetGcType() const override {
30     return kGcTypeSticky;
31   }
32 
33   StickyMarkSweep(Heap* heap, bool is_concurrent, const std::string& name_prefix = "");
~StickyMarkSweep()34   ~StickyMarkSweep() {}
35 
36   void MarkConcurrentRoots(VisitRootFlags flags) override
37       REQUIRES(Locks::heap_bitmap_lock_)
38       REQUIRES(!mark_stack_lock_)
39       REQUIRES_SHARED(Locks::mutator_lock_);
40 
41  protected:
42   // Bind the live bits to the mark bits of bitmaps for all spaces, all spaces other than the
43   // alloc space will be marked as immune.
44   void BindBitmaps() override REQUIRES_SHARED(Locks::mutator_lock_);
45 
46   void MarkReachableObjects()
47       override
48       REQUIRES(Locks::heap_bitmap_lock_)
49       REQUIRES_SHARED(Locks::mutator_lock_);
50 
51   void Sweep(bool swap_bitmaps)
52       override
53       REQUIRES(Locks::heap_bitmap_lock_)
54       REQUIRES_SHARED(Locks::mutator_lock_);
55 
56  private:
57   DISALLOW_IMPLICIT_CONSTRUCTORS(StickyMarkSweep);
58 };
59 
60 }  // namespace collector
61 }  // namespace gc
62 }  // namespace art
63 
64 #endif  // ART_RUNTIME_GC_COLLECTOR_STICKY_MARK_SWEEP_H_
65