1 /*
 2  * Copyright (c) 2017, 2022, 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
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24 
25 #ifndef SHARE_GC_G1_G1FULLGCCOMPACTTASK_HPP
26 #define SHARE_GC_G1_G1FULLGCCOMPACTTASK_HPP
27 
28 #include "gc/g1/g1FullGCCompactionPoint.hpp"
29 #include "gc/g1/g1FullGCScope.hpp"
30 #include "gc/g1/g1FullGCTask.hpp"
31 #include "gc/g1/heapRegionManager.hpp"
32 #include "gc/shared/referenceProcessor.hpp"
33 
34 class G1CollectedHeap;
35 class G1CMBitMap;
36 class SlidingForwarding;
37 class G1FullCollector;
38 
39 class G1FullGCCompactTask : public G1FullGCTask {
40   G1FullCollector* _collector;
41   HeapRegionClaimer _claimer;
42 
43   void compact_region(HeapRegion* hr);
44 
45 public:
46   G1FullGCCompactTask(G1FullCollector* collector) :
47     G1FullGCTask("G1 Compact Task", collector),
48     _collector(collector),
49     _claimer(collector->workers()) { }
50   void work(uint worker_id);
51   void serial_compaction();
52 
53   class G1CompactRegionClosure : public StackObj {
54     G1CMBitMap* _bitmap;
55     const SlidingForwarding* const _forwarding;
56     void clear_in_bitmap(oop object);
57   public:
58     G1CompactRegionClosure(G1CMBitMap* bitmap) :
59       _bitmap(bitmap),
60       _forwarding(G1CollectedHeap::heap()->forwarding()) { }
61     size_t apply(oop object);
62   };
63 };
64 
65 #endif // SHARE_GC_G1_G1FULLGCCOMPACTTASK_HPP