1 /*
 2  * Copyright (c) 2020, Amazon.com, Inc. 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_SHENANDOAH_SHENANDOAHGLOBALGENERATION_HPP
26 #define SHARE_VM_GC_SHENANDOAH_SHENANDOAHGLOBALGENERATION_HPP
27 
28 #include "gc/shenandoah/shenandoahGeneration.hpp"
29 
30 // A "generation" that represents the whole heap.
31 class ShenandoahGlobalGeneration : public ShenandoahGeneration {
32 public:
33   ShenandoahGlobalGeneration(uint max_queues)
34   : ShenandoahGeneration(GLOBAL, max_queues, 0, 0) { }
35 
36 public:
37   virtual const char* name() const override;
38 
39   virtual size_t max_capacity() const override;
40   virtual size_t soft_max_capacity() const override;
41   virtual size_t used_regions_size() const override;
42   virtual size_t used() const override;
43   virtual size_t available() const override;
44 
45   virtual void prepare_gc(bool do_old_gc_bootstrap) override;
46 
47   virtual void set_concurrent_mark_in_progress(bool in_progress)  override;
48 
49   bool contains(ShenandoahHeapRegion* region) const  override;
50 
51   bool contains(oop obj) const override { return true; }
52 
53   void parallel_heap_region_iterate(ShenandoahHeapRegionClosure* cl)  override;
54 
55   void heap_region_iterate(ShenandoahHeapRegionClosure* cl)  override;
56 
57  protected:
58   bool is_concurrent_mark_in_progress()  override;
59 };
60 
61 #endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHGLOBALGENERATION_HPP
62