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comparison src/share/vm/gc_implementation/shared/gcPolicyCounters.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 2002-2005 Sun Microsystems, 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 // GCPolicyCounters is a holder class for performance counters
26 // that track a generation
27
28 class GCPolicyCounters: public CHeapObj {
29 friend class VMStructs;
30
31 private:
32
33 // Constant PerfData types don't need to retain a reference.
34 // However, it's a good idea to document them here.
35 // PerfStringConstant* _name;
36 // PerfStringConstant* _collector_size;
37 // PerfStringConstant* _generation_size;
38
39 PerfVariable* _tenuring_threshold;
40 PerfVariable* _desired_survivor_size;
41
42 const char* _name_space;
43
44 public:
45
46 enum Name {
47 NONE,
48 GCPolicyCountersKind,
49 GCAdaptivePolicyCountersKind,
50 PSGCAdaptivePolicyCountersKind,
51 CMSGCAdaptivePolicyCountersKind
52 };
53
54 GCPolicyCounters(const char* name, int collectors, int generations);
55
56 inline PerfVariable* tenuring_threshold() const {
57 return _tenuring_threshold;
58 }
59
60 inline PerfVariable* desired_survivor_size() const {
61 return _desired_survivor_size;
62 }
63
64 const char* name_space() const { return _name_space; }
65
66 virtual void update_counters() {}
67
68 virtual GCPolicyCounters::Name kind() const {
69 return GCPolicyCounters::GCPolicyCountersKind;
70 }
71 };