Mercurial > hg > truffle
annotate src/share/vm/memory/heapInspection.hpp @ 3456:782e2bb60c41
7052494: Eclipse test fails on JDK 7 b142
Summary: Keep 'ne' test in Counted loop when we can't guarantee during compilation that init < limit.
Reviewed-by: never
author | kvn |
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date | Mon, 20 Jun 2011 16:45:35 -0700 |
parents | f95d63e2154a |
children | d2a62e0f25eb |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_MEMORY_HEAPINSPECTION_HPP |
26 #define SHARE_VM_MEMORY_HEAPINSPECTION_HPP | |
27 | |
28 #include "memory/allocation.inline.hpp" | |
29 #include "oops/oop.inline.hpp" | |
30 | |
0 | 31 #ifndef SERVICES_KERNEL |
32 | |
33 | |
34 // HeapInspection | |
35 | |
36 // KlassInfoTable is a bucket hash table that | |
37 // maps klassOops to extra information: | |
38 // instance count and instance word size. | |
39 // | |
40 // A KlassInfoBucket is the head of a link list | |
41 // of KlassInfoEntry's | |
42 // | |
43 // KlassInfoHisto is a growable array of pointers | |
44 // to KlassInfoEntry's and is used to sort | |
45 // the entries. | |
46 | |
47 class KlassInfoEntry: public CHeapObj { | |
48 private: | |
49 KlassInfoEntry* _next; | |
50 klassOop _klass; | |
51 long _instance_count; | |
52 size_t _instance_words; | |
53 | |
54 public: | |
55 KlassInfoEntry(klassOop k, KlassInfoEntry* next) : | |
56 _klass(k), _instance_count(0), _instance_words(0), _next(next) | |
57 {} | |
58 KlassInfoEntry* next() { return _next; } | |
59 bool is_equal(klassOop k) { return k == _klass; } | |
60 klassOop klass() { return _klass; } | |
61 long count() { return _instance_count; } | |
62 void set_count(long ct) { _instance_count = ct; } | |
63 size_t words() { return _instance_words; } | |
64 void set_words(size_t wds) { _instance_words = wds; } | |
65 int compare(KlassInfoEntry* e1, KlassInfoEntry* e2); | |
66 void print_on(outputStream* st) const; | |
67 }; | |
68 | |
69 class KlassInfoClosure: public StackObj { | |
70 public: | |
71 // Called for each KlassInfoEntry. | |
72 virtual void do_cinfo(KlassInfoEntry* cie) = 0; | |
73 }; | |
74 | |
75 class KlassInfoBucket: public CHeapObj { | |
76 private: | |
77 KlassInfoEntry* _list; | |
78 KlassInfoEntry* list() { return _list; } | |
79 void set_list(KlassInfoEntry* l) { _list = l; } | |
80 public: | |
81 KlassInfoEntry* lookup(const klassOop k); | |
82 void initialize() { _list = NULL; } | |
83 void empty(); | |
84 void iterate(KlassInfoClosure* cic); | |
85 }; | |
86 | |
87 class KlassInfoTable: public StackObj { | |
88 private: | |
89 int _size; | |
90 | |
91 // An aligned reference address (typically the least | |
92 // address in the perm gen) used for hashing klass | |
93 // objects. | |
94 HeapWord* _ref; | |
95 | |
96 KlassInfoBucket* _buckets; | |
97 uint hash(klassOop p); | |
98 KlassInfoEntry* lookup(const klassOop k); | |
99 | |
100 public: | |
101 // Table size | |
102 enum { | |
103 cit_size = 20011 | |
104 }; | |
105 KlassInfoTable(int size, HeapWord* ref); | |
106 ~KlassInfoTable(); | |
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107 bool record_instance(const oop obj); |
0 | 108 void iterate(KlassInfoClosure* cic); |
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109 bool allocation_failed() { return _buckets == NULL; } |
0 | 110 }; |
111 | |
112 class KlassInfoHisto : public StackObj { | |
113 private: | |
114 GrowableArray<KlassInfoEntry*>* _elements; | |
115 GrowableArray<KlassInfoEntry*>* elements() const { return _elements; } | |
116 const char* _title; | |
117 const char* title() const { return _title; } | |
118 static int sort_helper(KlassInfoEntry** e1, KlassInfoEntry** e2); | |
119 void print_elements(outputStream* st) const; | |
120 public: | |
121 enum { | |
122 histo_initial_size = 1000 | |
123 }; | |
124 KlassInfoHisto(const char* title, | |
125 int estimatedCount); | |
126 ~KlassInfoHisto(); | |
127 void add(KlassInfoEntry* cie); | |
128 void print_on(outputStream* st) const; | |
129 void sort(); | |
130 }; | |
131 | |
132 #endif // SERVICES_KERNEL | |
133 | |
134 class HeapInspection : public AllStatic { | |
135 public: | |
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136 static void heap_inspection(outputStream* st, bool need_prologue) KERNEL_RETURN; |
0 | 137 static void find_instances_at_safepoint(klassOop k, GrowableArray<oop>* result) KERNEL_RETURN; |
138 }; | |
1972 | 139 |
140 #endif // SHARE_VM_MEMORY_HEAPINSPECTION_HPP |