1 /*
2 * Copyright (c) 2020, 2024, 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 */
24
25 #ifndef SHARE_CDS_DUMPALLOCSTATS_HPP
26 #define SHARE_CDS_DUMPALLOCSTATS_HPP
27
28 #include "classfile/compactHashtable.hpp"
29 #include "memory/allocation.hpp"
30
31 // This is for dumping detailed statistics for the allocations
32 // in the shared spaces.
33 class DumpAllocStats : public StackObj {
34 public:
35
36 // Here's poor man's enum inheritance
37 #define SHAREDSPACE_OBJ_TYPES_DO(f) \
38 METASPACE_OBJ_TYPES_DO(f) \
39 f(SymbolHashentry) \
40 f(SymbolBucket) \
41 f(StringHashentry) \
42 f(StringBucket) \
43 f(ModulesNatives) \
44 f(CppVTables) \
45 f(Other)
46
47 enum Type {
48 // Types are MetaspaceObj::ClassType, MetaspaceObj::SymbolType, etc
49 SHAREDSPACE_OBJ_TYPES_DO(METASPACE_OBJ_TYPE_DECLARE)
50 _number_of_types
51 };
52
53 static const char* type_name(Type type) {
54 switch(type) {
55 SHAREDSPACE_OBJ_TYPES_DO(METASPACE_OBJ_TYPE_NAME_CASE)
56 default:
57 ShouldNotReachHere();
58 return nullptr;
59 }
60 }
61
62 CompactHashtableStats _symbol_stats;
63 CompactHashtableStats _string_stats;
64
65 int _counts[2][_number_of_types];
66 int _bytes [2][_number_of_types];
67
68 int _num_field_cp_entries;
69 int _num_field_cp_entries_archived;
70 int _num_field_cp_entries_reverted;
71 int _num_klass_cp_entries;
72 int _num_klass_cp_entries_archived;
73 int _num_klass_cp_entries_reverted;
74
75 public:
76 enum { RO = 0, RW = 1 };
77
78 DumpAllocStats() {
79 memset(_counts, 0, sizeof(_counts));
80 memset(_bytes, 0, sizeof(_bytes));
81 _num_field_cp_entries = 0;
82 _num_field_cp_entries_archived = 0;
83 _num_field_cp_entries_reverted = 0;
84 _num_klass_cp_entries = 0;
85 _num_klass_cp_entries_archived = 0;
86 _num_klass_cp_entries_reverted = 0;
87 };
88
89 CompactHashtableStats* symbol_stats() { return &_symbol_stats; }
90 CompactHashtableStats* string_stats() { return &_string_stats; }
91
92 void record(MetaspaceObj::Type type, int byte_size, bool read_only) {
93 assert(int(type) >= 0 && type < MetaspaceObj::_number_of_types, "sanity");
94 int which = (read_only) ? RO : RW;
95 _counts[which][type] ++;
96 _bytes [which][type] += byte_size;
97 }
98
99 void record_modules(int byte_size, bool read_only) {
100 int which = (read_only) ? RO : RW;
101 _bytes [which][ModulesNativesType] += byte_size;
102 }
103
104 void record_other_type(int byte_size, bool read_only) {
105 int which = (read_only) ? RO : RW;
106 _bytes [which][OtherType] += byte_size;
107 }
108
109 void record_cpp_vtables(int byte_size) {
110 _bytes[RW][CppVTablesType] += byte_size;
111 }
112
113 void record_field_cp_entry(bool archived, bool reverted) {
114 _num_field_cp_entries ++;
115 _num_field_cp_entries_archived += archived ? 1 : 0;
116 _num_field_cp_entries_reverted += reverted ? 1 : 0;
117 }
118
119 void record_klass_cp_entry(bool archived, bool reverted) {
120 _num_klass_cp_entries ++;
121 _num_klass_cp_entries_archived += archived ? 1 : 0;
122 _num_klass_cp_entries_reverted += reverted ? 1 : 0;
123 }
124
125 void print_stats(int ro_all, int rw_all);
126
127 DEBUG_ONLY(void verify(int expected_byte_size, bool read_only) const);
128
129 };
130
131 #endif // SHARE_CDS_DUMPALLOCSTATS_HPP