1 /*
2 * Copyright (c) 2018, 2019, 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
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHAGGRESSIVEHEURISTICS_HPP
26 #define SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHAGGRESSIVEHEURISTICS_HPP
27
28 #include "gc/shenandoah/heuristics/shenandoahHeuristics.hpp"
29
30 class ShenandoahAggressiveHeuristics : public ShenandoahHeuristics {
31 public:
32 ShenandoahAggressiveHeuristics();
33
34 virtual void choose_collection_set_from_regiondata(ShenandoahCollectionSet* cset,
35 RegionData* data, size_t size,
36 size_t free);
37
38 virtual bool should_start_gc();
39
40 virtual bool should_unload_classes();
41
42 virtual const char* name() { return "Aggressive"; }
43 virtual bool is_diagnostic() { return true; }
44 virtual bool is_experimental() { return false; }
45 };
46
47 #endif // SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHAGGRESSIVEHEURISTICS_HPP
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1 /*
2 * Copyright (c) 2018, 2019, Red Hat, Inc. All rights reserved.
3 * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHAGGRESSIVEHEURISTICS_HPP
27 #define SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHAGGRESSIVEHEURISTICS_HPP
28
29 #include "gc/shenandoah/heuristics/shenandoahHeuristics.hpp"
30
31 /*
32 * This is a diagnostic heuristic that continuously runs collections
33 * cycles and adds every region with any garbage to the collection set.
34 */
35 class ShenandoahAggressiveHeuristics : public ShenandoahHeuristics {
36 public:
37 ShenandoahAggressiveHeuristics(ShenandoahSpaceInfo* space_info);
38
39 virtual void choose_collection_set_from_regiondata(ShenandoahCollectionSet* cset,
40 RegionData* data, size_t size,
41 size_t free);
42
43 virtual bool should_start_gc();
44
45 virtual bool should_unload_classes();
46
47 virtual const char* name() { return "Aggressive"; }
48 virtual bool is_diagnostic() { return true; }
49 virtual bool is_experimental() { return false; }
50 };
51
52 #endif // SHARE_GC_SHENANDOAH_HEURISTICS_SHENANDOAHAGGRESSIVEHEURISTICS_HPP
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