1/*
2 * Copyright (c) 2002, 2019, 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.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 */
24
25#ifndef SHARE_GC_SHARED_GCPOLICYCOUNTERS_HPP
26#define SHARE_GC_SHARED_GCPOLICYCOUNTERS_HPP
27
28#include "runtime/perfData.hpp"
29
30// GCPolicyCounters is a holder class for performance counters
31// that track a generation
32
33class GCPolicyCounters: public CHeapObj<mtGC> {
34 friend class VMStructs;
35
36 // Constant PerfData types don't need to retain a reference.
37 // However, it's a good idea to document them here.
38 // PerfStringConstant* _name;
39 // PerfStringConstant* _collector_size;
40 // PerfStringConstant* _generation_size;
41
42 PerfVariable* _tenuring_threshold;
43 PerfVariable* _desired_survivor_size;
44 PerfVariable* _gc_overhead_limit_exceeded_counter;
45
46 const char* _name_space;
47
48public:
49 enum Name {
50 NONE,
51 GCPolicyCountersKind,
52 GCAdaptivePolicyCountersKind,
53 PSGCAdaptivePolicyCountersKind
54 };
55
56 GCPolicyCounters(const char* name, int collectors, int generations);
57
58 inline PerfVariable* tenuring_threshold() const {
59 return _tenuring_threshold;
60 }
61
62 inline PerfVariable* desired_survivor_size() const {
63 return _desired_survivor_size;
64 }
65
66 inline PerfVariable* gc_overhead_limit_exceeded_counter() const {
67 return _gc_overhead_limit_exceeded_counter;
68 }
69
70 const char* name_space() const { return _name_space; }
71
72 virtual void update_counters() {}
73
74 virtual GCPolicyCounters::Name kind() const {
75 return GCPolicyCounters::GCPolicyCountersKind;
76 }
77};
78
79#endif // SHARE_GC_SHARED_GCPOLICYCOUNTERS_HPP
80