1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/memory/classify.cpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,194 @@
1.4 +/*
1.5 + * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +# include "incls/_precompiled.incl"
1.29 +# include "incls/_classify.cpp.incl"
1.30 +
1.31 +
1.32 +const char* ClassifyObjectClosure::object_type_name[number_object_types] = {
1.33 + "unknown",
1.34 + "instance",
1.35 + "instanceRef",
1.36 + "objArray",
1.37 + "symbol",
1.38 + "klass",
1.39 + "instanceKlass",
1.40 + "method",
1.41 + "constMethod",
1.42 + "methodData",
1.43 + "constantPool",
1.44 + "constantPoolCache",
1.45 + "typeArray",
1.46 + "compiledICHolder"
1.47 +};
1.48 +
1.49 +
1.50 +object_type ClassifyObjectClosure::classify_object(oop obj, bool count) {
1.51 + object_type type = unknown_type;
1.52 +
1.53 + Klass* k = obj->blueprint();
1.54 +
1.55 + if (k->as_klassOop() == SystemDictionary::object_klass()) {
1.56 + tty->print_cr("Found the class!");
1.57 + }
1.58 +
1.59 + if (count) {
1.60 + k->set_alloc_count(k->alloc_count() + 1);
1.61 + }
1.62 +
1.63 + if (obj->is_instance()) {
1.64 + if (k->oop_is_instanceRef()) {
1.65 + type = instanceRef_type;
1.66 + } else {
1.67 + type = instance_type;
1.68 + }
1.69 + } else if (obj->is_typeArray()) {
1.70 + type = typeArray_type;
1.71 + } else if (obj->is_objArray()) {
1.72 + type = objArray_type;
1.73 + } else if (obj->is_symbol()) {
1.74 + type = symbol_type;
1.75 + } else if (obj->is_klass()) {
1.76 + Klass* k = ((klassOop)obj)->klass_part();
1.77 + if (k->oop_is_instance()) {
1.78 + type = instanceKlass_type;
1.79 + } else {
1.80 + type = klass_type;
1.81 + }
1.82 + } else if (obj->is_method()) {
1.83 + type = method_type;
1.84 + } else if (obj->is_constMethod()) {
1.85 + type = constMethod_type;
1.86 + } else if (obj->is_methodData()) {
1.87 + ShouldNotReachHere();
1.88 + } else if (obj->is_constantPool()) {
1.89 + type = constantPool_type;
1.90 + } else if (obj->is_constantPoolCache()) {
1.91 + type = constantPoolCache_type;
1.92 + } else if (obj->is_compiledICHolder()) {
1.93 + type = compiledICHolder_type;
1.94 + } else {
1.95 + ShouldNotReachHere();
1.96 + }
1.97 +
1.98 + assert(type != unknown_type, "found object of unknown type.");
1.99 + return type;
1.100 +}
1.101 +
1.102 +
1.103 +void ClassifyObjectClosure::reset() {
1.104 + for (int i = 0; i < number_object_types; ++i) {
1.105 + object_count[i] = 0;
1.106 + object_size[i] = 0;
1.107 + }
1.108 + total_object_count = 0;
1.109 + total_object_size = 0;
1.110 +}
1.111 +
1.112 +
1.113 +void ClassifyObjectClosure::do_object(oop obj) {
1.114 + int i = classify_object(obj, true);
1.115 + ++object_count[i];
1.116 + ++total_object_count;
1.117 + size_t size = obj->size() * HeapWordSize;
1.118 + object_size[i] += size;
1.119 + total_object_size += size;
1.120 +}
1.121 +
1.122 +
1.123 +size_t ClassifyObjectClosure::print() {
1.124 + int num_objects = 0;
1.125 + size_t size_objects = 0;
1.126 + for (int i = 0; i < number_object_types; ++i) {
1.127 + if (object_count[i] != 0) {
1.128 + tty->print_cr("%8d %-22s (%8d bytes, %5.2f bytes/object)",
1.129 + object_count[i], object_type_name[i], object_size[i],
1.130 + (float)object_size[i]/(float)object_count[i]);
1.131 + }
1.132 + num_objects += object_count[i];
1.133 + size_objects += object_size[i];
1.134 + }
1.135 + assert(num_objects == total_object_count, "Object count mismatch!");
1.136 + assert(size_objects == total_object_size, "Object size mismatch!");
1.137 +
1.138 + tty->print_cr(" Total: %d objects, %d bytes", total_object_count,
1.139 + total_object_size);
1.140 + return total_object_size;
1.141 +}
1.142 +
1.143 +
1.144 +void ClassifyInstanceKlassClosure::do_object(oop obj) {
1.145 + int type = classify_object(obj, false);
1.146 + if (type == instanceKlass_type || type == klass_type) {
1.147 + Klass* k = ((klassOop)obj)->klass_part();
1.148 + if (k->alloc_count() > 0) {
1.149 + ResourceMark rm;
1.150 + const char *name;
1.151 + if (k->name() == NULL) {
1.152 +
1.153 + if (obj == Universe::klassKlassObj()) {
1.154 + name = "_klassKlassObj";
1.155 + } else if (obj == Universe::arrayKlassKlassObj()) {
1.156 + name = "_arrayKlassKlassObj";
1.157 + } else if (obj == Universe::objArrayKlassKlassObj()) {
1.158 + name = "_objArrayKlassKlassObj";
1.159 + } else if (obj == Universe::typeArrayKlassKlassObj()) {
1.160 + name = "_typeArrayKlassKlassObj";
1.161 + } else if (obj == Universe::instanceKlassKlassObj()) {
1.162 + name = "_instanceKlassKlassObj";
1.163 + } else if (obj == Universe::symbolKlassObj()) {
1.164 + name = "_symbolKlassObj";
1.165 + } else if (obj == Universe::methodKlassObj()) {
1.166 + name = "_methodKlassObj";
1.167 + } else if (obj == Universe::constMethodKlassObj()) {
1.168 + name = "_constMethodKlassObj";
1.169 + } else if (obj == Universe::constantPoolKlassObj()) {
1.170 + name = "_constantPoolKlassObj";
1.171 + } else if (obj == Universe::constantPoolCacheKlassObj()) {
1.172 + name = "_constantPoolCacheKlassObj";
1.173 + } else if (obj == Universe::compiledICHolderKlassObj()) {
1.174 + name = "_compiledICHolderKlassObj";
1.175 + } else if (obj == Universe::systemObjArrayKlassObj()) {
1.176 + name = "_systemObjArrayKlassObj";
1.177 + } else {
1.178 + name = "[unnamed]";
1.179 + }
1.180 + } else {
1.181 + name = k->external_name();
1.182 + }
1.183 + tty->print_cr("% 8d instances of %s", k->alloc_count(), name);
1.184 + }
1.185 + total_instances += k->alloc_count();
1.186 + }
1.187 +}
1.188 +
1.189 +
1.190 +void ClassifyInstanceKlassClosure::print() {
1.191 + tty->print_cr(" Total instances: %d.", total_instances);
1.192 +}
1.193 +
1.194 +
1.195 +void ClassifyInstanceKlassClosure::reset() {
1.196 + total_instances = 0;
1.197 +}
