1/*
2 * Copyright (c) 2013, 2018, Red Hat, Inc. All rights reserved.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24#ifndef SHARE_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP
25#define SHARE_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP
26
27#include "gc/shenandoah/shenandoahHeap.hpp"
28#include "gc/shenandoah/shenandoahTracer.hpp"
29#include "memory/allocation.hpp"
30#include "utilities/ostream.hpp"
31
32class ShenandoahCollectorPolicy : public CHeapObj<mtGC> {
33private:
34 size_t _success_concurrent_gcs;
35 size_t _success_degenerated_gcs;
36 size_t _success_full_gcs;
37 size_t _alloc_failure_degenerated;
38 size_t _alloc_failure_degenerated_upgrade_to_full;
39 size_t _alloc_failure_full;
40 size_t _explicit_concurrent;
41 size_t _explicit_full;
42 size_t _implicit_concurrent;
43 size_t _implicit_full;
44 size_t _degen_points[ShenandoahHeap::_DEGENERATED_LIMIT];
45
46 ShenandoahSharedFlag _in_shutdown;
47
48 ShenandoahTracer* _tracer;
49
50 size_t _cycle_counter;
51
52public:
53 ShenandoahCollectorPolicy();
54
55 // TODO: This is different from gc_end: that one encompasses one VM operation.
56 // These two encompass the entire cycle.
57 void record_cycle_start();
58
59 void record_success_concurrent();
60 void record_success_degenerated();
61 void record_success_full();
62 void record_alloc_failure_to_degenerated(ShenandoahHeap::ShenandoahDegenPoint point);
63 void record_alloc_failure_to_full();
64 void record_degenerated_upgrade_to_full();
65 void record_explicit_to_concurrent();
66 void record_explicit_to_full();
67 void record_implicit_to_concurrent();
68 void record_implicit_to_full();
69
70 void record_shutdown();
71 bool is_at_shutdown();
72
73 ShenandoahTracer* tracer() {return _tracer;}
74
75 size_t cycle_counter() const;
76
77 void print_gc_stats(outputStream* out) const;
78};
79
80#endif // SHARE_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP
81