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1 /*
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2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 typedef enum oop_type {
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26 unknown_type,
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27 instance_type,
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28 instanceRef_type,
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29 objArray_type,
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30 symbol_type,
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31 klass_type,
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32 instanceKlass_type,
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33 method_type,
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34 constMethod_type,
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35 methodData_type,
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36 constantPool_type,
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37 constantPoolCache_type,
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38 typeArray_type,
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39 compiledICHolder_type,
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40 number_object_types
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41 } object_type;
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42
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43
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44 // Classify objects by type and keep counts.
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45 // Print the count and space taken for each type.
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46
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47
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48 class ClassifyObjectClosure : public ObjectClosure {
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49 private:
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50
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51 static const char* object_type_name[number_object_types];
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52
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53 int total_object_count;
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54 size_t total_object_size;
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55 int object_count[number_object_types];
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56 size_t object_size[number_object_types];
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57
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58 public:
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59 ClassifyObjectClosure() { reset(); }
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60 void reset();
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61 void do_object(oop obj);
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62 static object_type classify_object(oop obj, bool count);
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63 size_t print();
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64 };
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65
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66
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67 // Count objects using the alloc_count field in the object's klass
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68 // object.
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69
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70 class ClassifyInstanceKlassClosure : public ClassifyObjectClosure {
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71 private:
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72 int total_instances;
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73 public:
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74 ClassifyInstanceKlassClosure() { reset(); }
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75 void reset();
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76 void print();
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77 void do_object(oop obj);
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78 };
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79
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80
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81 // Clear the alloc_count fields in all classes so that the count can be
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82 // restarted.
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83
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84 class ClearAllocCountClosure : public ObjectClosure {
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85 public:
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86 void do_object(oop obj) {
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87 if (obj->is_klass()) {
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88 Klass* k = Klass::cast((klassOop)obj);
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89 k->set_alloc_count(0);
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90 }
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91 }
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92 };
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