1 /* 2 * Copyright (c) 2003, 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. 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_VM_MEMORY_CLASSIFY_HPP 26 #define SHARE_VM_MEMORY_CLASSIFY_HPP 27 28 #include "oops/oop.inline.hpp" 29 30 typedef enum oop_type { 31 unknown_type, 32 instance_type, 33 instanceRef_type, 34 objArray_type, 35 symbol_type, 36 klass_type, 37 instanceKlass_type, 38 method_type, 39 constMethod_type, 40 methodData_type, 41 constantPool_type, 42 constantPoolCache_type, 43 typeArray_type, 44 compiledICHolder_type, 45 number_object_types 46 } object_type; 47 48 49 // Classify objects by type and keep counts. 50 // Print the count and space taken for each type. 51 52 53 class ClassifyObjectClosure : public ObjectClosure { 54 private: 55 56 static const char* object_type_name[number_object_types]; 57 58 int total_object_count; 59 size_t total_object_size; 60 int object_count[number_object_types]; 61 size_t object_size[number_object_types]; 62 63 public: 64 ClassifyObjectClosure() { reset(); } 65 void reset(); 66 void do_object(oop obj); 67 static object_type classify_object(oop obj, bool count); 68 size_t print(); 69 }; 70 71 72 // Count objects using the alloc_count field in the object's klass 73 // object. 74 75 class ClassifyInstanceKlassClosure : public ClassifyObjectClosure { 76 private: 77 int total_instances; 78 public: 79 ClassifyInstanceKlassClosure() { reset(); } 80 void reset(); 81 void print(); 82 void do_object(oop obj); 83 }; 84 85 86 // Clear the alloc_count fields in all classes so that the count can be 87 // restarted. 88 89 class ClearAllocCountClosure : public ObjectClosure { 90 public: 91 void do_object(oop obj) { 92 if (obj->is_klass()) { 93 Klass* k = Klass::cast((klassOop)obj); 94 k->set_alloc_count(0); 95 } 96 } 97 }; 98 99 #endif // SHARE_VM_MEMORY_CLASSIFY_HPP