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.
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
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24 
25 #ifndef SHARE_GC_SHARED_COLLECTORCOUNTERS_HPP
26 #define SHARE_GC_SHARED_COLLECTORCOUNTERS_HPP
27 
28 #include "runtime/perfData.hpp"
29 
30 // CollectorCounters is a holder class for performance counters
31 // that track a collector
32 
33 class CollectorCounters: public CHeapObj<mtGC> {
34   friend class VMStructs;
35 
36   private:
37     PerfCounter*      _invocations;
38     PerfCounter*      _time;
39     PerfVariable*     _last_entry_time;
40     PerfVariable*     _last_exit_time;
41 
42     // Constant PerfData types don't need to retain a reference.
43     // However, it's a good idea to document them here.
44     // PerfStringConstant*     _name;
45 
46     char*             _name_space;
47 
48   public:
49 
50     CollectorCounters(const char* name, int ordinal);
51 
52     ~CollectorCounters();
53 
54     inline PerfCounter* invocation_counter() const  { return _invocations; }
55 
56     inline PerfCounter* time_counter() const        { return _time; }
57 
58     inline PerfVariable* last_entry_counter() const { return _last_entry_time; }
59 
60     inline PerfVariable* last_exit_counter() const  { return _last_exit_time; }
61 
62     const char* name_space() const                  { return _name_space; }
63 };
64 
65 class TraceCollectorStats: public PerfTraceTimedEvent {
66 
67   protected:
68     CollectorCounters* _c;
69 
70   public:
71     TraceCollectorStats(CollectorCounters* c);
72 
73     ~TraceCollectorStats();
74 };
75 
76 #endif // SHARE_GC_SHARED_COLLECTORCOUNTERS_HPP