1 /* 2 * Copyright (c) 2003, 2007, 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 typedef enum oop_type { 26 unknown_type, 27 instance_type, 28 instanceRef_type, 29 objArray_type, 30 symbol_type, 31 klass_type, 32 instanceKlass_type, 33 method_type, 34 constMethod_type, 35 methodData_type, 36 constantPool_type, 37 constantPoolCache_type, 38 typeArray_type, 39 compiledICHolder_type, 40 number_object_types 41 } object_type; 42 43 44 // Classify objects by type and keep counts. 45 // Print the count and space taken for each type. 46 47 48 class ClassifyObjectClosure : public ObjectClosure { 49 private: 50 51 static const char* object_type_name[number_object_types]; 52 53 int total_object_count; 54 size_t total_object_size; 55 int object_count[number_object_types]; 56 size_t object_size[number_object_types]; 57 58 public: 59 ClassifyObjectClosure() { reset(); } 60 void reset(); 61 void do_object(oop obj); 62 static object_type classify_object(oop obj, bool count); 63 size_t print(); 64 }; 65 66 67 // Count objects using the alloc_count field in the object's klass 68 // object. 69 70 class ClassifyInstanceKlassClosure : public ClassifyObjectClosure { 71 private: 72 int total_instances; 73 public: 74 ClassifyInstanceKlassClosure() { reset(); } 75 void reset(); 76 void print(); 77 void do_object(oop obj); 78 }; 79 80 81 // Clear the alloc_count fields in all classes so that the count can be 82 // restarted. 83 84 class ClearAllocCountClosure : public ObjectClosure { 85 public: 86 void do_object(oop obj) { 87 if (obj->is_klass()) { 88 Klass* k = Klass::cast((klassOop)obj); 89 k->set_alloc_count(0); 90 } 91 } 92 };