Thu, 28 Jun 2012 17:03:16 -0400
6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain
1 /*
2 * Copyright (c) 2002, 2010, 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 */
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;
42 // Constant PerfData types don't need to retain a reference.
43 // However, it's a good idea to document them here.
44 // PerfConstant* _size;
46 ContiguousSpace* _space;
47 char* _name_space;
49 public:
51 CSpaceCounters(const char* name, int ordinal, size_t max_size,
52 ContiguousSpace* s, GenerationCounters* gc);
54 ~CSpaceCounters() {
55 if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space, mtInternal);
56 }
58 inline void update_capacity() {
59 _capacity->set_value(_space->capacity());
60 }
62 inline void update_used() {
63 _used->set_value(_space->used());
64 }
66 inline void update_all() {
67 update_used();
68 update_capacity();
69 }
71 const char* name_space() const { return _name_space; }
72 };
74 class ContiguousSpaceUsedHelper : public PerfLongSampleHelper {
75 private:
76 ContiguousSpace* _space;
78 public:
79 ContiguousSpaceUsedHelper(ContiguousSpace* space) : _space(space) { }
81 inline jlong take_sample() {
82 return _space->used();
83 }
84 };
86 #endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_CSPACECOUNTERS_HPP