1 /*
 2  * Copyright (c) 2013, 2021, Red Hat, Inc. 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
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22  *
23  */
24 
25 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHCONCURRENTMARK_HPP
26 #define SHARE_GC_SHENANDOAH_SHENANDOAHCONCURRENTMARK_HPP
27 
28 #include "gc/shenandoah/shenandoahMark.hpp"
29 
30 template <GenerationMode GENERATION>
31 class ShenandoahConcurrentMarkingTask;
32 template<GenerationMode GENERATION>
33 class ShenandoahFinalMarkingTask;
34 class ShenandoahGeneration;
35 
36 class ShenandoahConcurrentMark: public ShenandoahMark {
37   template <GenerationMode GENERATION> friend class ShenandoahConcurrentMarkingTask;
38   template <GenerationMode GENERATION> friend class ShenandoahFinalMarkingTask;
39 
40 public:
41   ShenandoahConcurrentMark(ShenandoahGeneration* generation);
42 
43   // Concurrent mark roots
44   void mark_concurrent_roots();
45 
46   // Concurrent mark
47   void concurrent_mark();
48 
49   // Finish mark at a safepoint
50   void finish_mark();
51 
52 private:
53   void finish_mark_work();
54 };
55 
56 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHCONCURRENTMARK_HPP