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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 # include "incls/_precompiled.incl"
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26 # include "incls/_classify.cpp.incl"
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27
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28
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29 const char* ClassifyObjectClosure::object_type_name[number_object_types] = {
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30 "unknown",
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31 "instance",
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32 "instanceRef",
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33 "objArray",
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34 "symbol",
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35 "klass",
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36 "instanceKlass",
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37 "method",
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38 "constMethod",
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39 "methodData",
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40 "constantPool",
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41 "constantPoolCache",
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42 "typeArray",
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43 "compiledICHolder"
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44 };
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45
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46
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47 object_type ClassifyObjectClosure::classify_object(oop obj, bool count) {
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48 object_type type = unknown_type;
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49
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50 Klass* k = obj->blueprint();
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51
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52 if (k->as_klassOop() == SystemDictionary::object_klass()) {
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53 tty->print_cr("Found the class!");
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54 }
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55
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56 if (count) {
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57 k->set_alloc_count(k->alloc_count() + 1);
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58 }
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59
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60 if (obj->is_instance()) {
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61 if (k->oop_is_instanceRef()) {
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62 type = instanceRef_type;
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63 } else {
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64 type = instance_type;
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65 }
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66 } else if (obj->is_typeArray()) {
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67 type = typeArray_type;
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68 } else if (obj->is_objArray()) {
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69 type = objArray_type;
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70 } else if (obj->is_symbol()) {
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71 type = symbol_type;
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72 } else if (obj->is_klass()) {
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73 Klass* k = ((klassOop)obj)->klass_part();
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74 if (k->oop_is_instance()) {
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75 type = instanceKlass_type;
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76 } else {
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77 type = klass_type;
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78 }
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79 } else if (obj->is_method()) {
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80 type = method_type;
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81 } else if (obj->is_constMethod()) {
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82 type = constMethod_type;
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83 } else if (obj->is_methodData()) {
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84 ShouldNotReachHere();
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85 } else if (obj->is_constantPool()) {
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86 type = constantPool_type;
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87 } else if (obj->is_constantPoolCache()) {
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88 type = constantPoolCache_type;
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89 } else if (obj->is_compiledICHolder()) {
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90 type = compiledICHolder_type;
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91 } else {
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92 ShouldNotReachHere();
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93 }
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94
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95 assert(type != unknown_type, "found object of unknown type.");
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96 return type;
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97 }
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98
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99
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100 void ClassifyObjectClosure::reset() {
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101 for (int i = 0; i < number_object_types; ++i) {
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102 object_count[i] = 0;
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103 object_size[i] = 0;
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104 }
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105 total_object_count = 0;
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106 total_object_size = 0;
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107 }
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108
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109
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110 void ClassifyObjectClosure::do_object(oop obj) {
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111 int i = classify_object(obj, true);
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112 ++object_count[i];
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113 ++total_object_count;
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114 size_t size = obj->size() * HeapWordSize;
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115 object_size[i] += size;
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116 total_object_size += size;
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117 }
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118
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119
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120 size_t ClassifyObjectClosure::print() {
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121 int num_objects = 0;
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122 size_t size_objects = 0;
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123 for (int i = 0; i < number_object_types; ++i) {
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124 if (object_count[i] != 0) {
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125 tty->print_cr("%8d %-22s (%8d bytes, %5.2f bytes/object)",
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126 object_count[i], object_type_name[i], object_size[i],
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127 (float)object_size[i]/(float)object_count[i]);
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128 }
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129 num_objects += object_count[i];
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130 size_objects += object_size[i];
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131 }
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132 assert(num_objects == total_object_count, "Object count mismatch!");
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133 assert(size_objects == total_object_size, "Object size mismatch!");
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134
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135 tty->print_cr(" Total: %d objects, %d bytes", total_object_count,
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136 total_object_size);
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137 return total_object_size;
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138 }
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139
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140
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141 void ClassifyInstanceKlassClosure::do_object(oop obj) {
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142 int type = classify_object(obj, false);
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143 if (type == instanceKlass_type || type == klass_type) {
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144 Klass* k = ((klassOop)obj)->klass_part();
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145 if (k->alloc_count() > 0) {
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146 ResourceMark rm;
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147 const char *name;
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148 if (k->name() == NULL) {
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149
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150 if (obj == Universe::klassKlassObj()) {
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151 name = "_klassKlassObj";
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152 } else if (obj == Universe::arrayKlassKlassObj()) {
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153 name = "_arrayKlassKlassObj";
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154 } else if (obj == Universe::objArrayKlassKlassObj()) {
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155 name = "_objArrayKlassKlassObj";
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156 } else if (obj == Universe::typeArrayKlassKlassObj()) {
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157 name = "_typeArrayKlassKlassObj";
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158 } else if (obj == Universe::instanceKlassKlassObj()) {
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159 name = "_instanceKlassKlassObj";
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160 } else if (obj == Universe::symbolKlassObj()) {
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161 name = "_symbolKlassObj";
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162 } else if (obj == Universe::methodKlassObj()) {
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163 name = "_methodKlassObj";
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164 } else if (obj == Universe::constMethodKlassObj()) {
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165 name = "_constMethodKlassObj";
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166 } else if (obj == Universe::constantPoolKlassObj()) {
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167 name = "_constantPoolKlassObj";
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168 } else if (obj == Universe::constantPoolCacheKlassObj()) {
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169 name = "_constantPoolCacheKlassObj";
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170 } else if (obj == Universe::compiledICHolderKlassObj()) {
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171 name = "_compiledICHolderKlassObj";
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172 } else if (obj == Universe::systemObjArrayKlassObj()) {
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173 name = "_systemObjArrayKlassObj";
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174 } else {
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175 name = "[unnamed]";
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176 }
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177 } else {
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178 name = k->external_name();
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179 }
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180 tty->print_cr("% 8d instances of %s", k->alloc_count(), name);
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181 }
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182 total_instances += k->alloc_count();
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183 }
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184 }
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185
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186
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187 void ClassifyInstanceKlassClosure::print() {
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188 tty->print_cr(" Total instances: %d.", total_instances);
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189 }
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190
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191
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192 void ClassifyInstanceKlassClosure::reset() {
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193 total_instances = 0;
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194 }
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