Wed, 27 Apr 2016 01:25:04 +0800
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
1 /*
2 * Copyright (c) 2002, 2012, 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
21 * questions.
22 *
23 */
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_CSPACECOUNTERS_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_SHARED_CSPACECOUNTERS_HPP
28 #include "gc_implementation/shared/generationCounters.hpp"
29 #include "memory/space.inline.hpp"
30 #include "runtime/perfData.hpp"
32 // A CSpaceCounters is a holder class for performance counters
33 // that track a space;
35 class CSpaceCounters: public CHeapObj<mtGC> {
36 friend class VMStructs;
38 private:
39 PerfVariable* _capacity;
40 PerfVariable* _used;
41 PerfVariable* _max_capacity;
43 // Constant PerfData types don't need to retain a reference.
44 // However, it's a good idea to document them here.
45 // PerfConstant* _size;
47 ContiguousSpace* _space;
48 char* _name_space;
50 public:
52 CSpaceCounters(const char* name, int ordinal, size_t max_size,
53 ContiguousSpace* s, GenerationCounters* gc);
55 ~CSpaceCounters() {
56 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtInternal);
57 }
59 virtual inline void update_capacity() {
60 _capacity->set_value(_space->capacity());
61 }
63 virtual inline void update_used() {
64 _used->set_value(_space->used());
65 }
67 virtual inline void update_all() {
68 update_used();
69 update_capacity();
70 }
72 const char* name_space() const { return _name_space; }
73 };
75 class ContiguousSpaceUsedHelper : public PerfLongSampleHelper {
76 private:
77 ContiguousSpace* _space;
79 public:
80 ContiguousSpaceUsedHelper(ContiguousSpace* space) : _space(space) { }
82 inline jlong take_sample() {
83 return _space->used();
84 }
85 };
87 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_CSPACECOUNTERS_HPP