1 /* 2 * Copyright (c) 2020, 2023, 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_klass_cp_entries; 69 int _num_klass_cp_entries_archived; 70 71 public: 72 enum { RO = 0, RW = 1 }; 73 74 DumpAllocStats() { 75 memset(_counts, 0, sizeof(_counts)); 76 memset(_bytes, 0, sizeof(_bytes)); 77 _num_klass_cp_entries = 0; 78 _num_klass_cp_entries_archived = 0; 79 }; 80 81 CompactHashtableStats* symbol_stats() { return &_symbol_stats; } 82 CompactHashtableStats* string_stats() { return &_string_stats; } 83 84 void record(MetaspaceObj::Type type, int byte_size, bool read_only) { 85 assert(int(type) >= 0 && type < MetaspaceObj::_number_of_types, "sanity"); 86 int which = (read_only) ? RO : RW; 87 _counts[which][type] ++; 88 _bytes [which][type] += byte_size; 89 } 90 91 void record_modules(int byte_size, bool read_only) { 92 int which = (read_only) ? RO : RW; 93 _bytes [which][ModulesNativesType] += byte_size; 94 } 95 96 void record_other_type(int byte_size, bool read_only) { 97 int which = (read_only) ? RO : RW; 98 _bytes [which][OtherType] += byte_size; 99 } 100 101 void record_cpp_vtables(int byte_size) { 102 _bytes[RW][CppVTablesType] += byte_size; 103 } 104 105 void record_klass_cp_entry(bool archived) { 106 _num_klass_cp_entries ++; 107 _num_klass_cp_entries_archived += archived ? 1 : 0; 108 } 109 110 void print_stats(int ro_all, int rw_all); 111 112 DEBUG_ONLY(void verify(int expected_byte_size, bool read_only) const); 113 114 }; 115 116 #endif // SHARE_CDS_DUMPALLOCSTATS_HPP