Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/memory/classify.cpp@8ce625481709 (annotated)

src/share/vm/memory/classify.cpp

Fri, 15 Apr 2011 09:36:28 -0400

author
coleenp
date
Fri, 15 Apr 2011 09:36:28 -0400
changeset 2777
8ce625481709
parent 2708
1d1603768966
permissions
-rw-r--r--

7032407: Crash in LinkResolver::runtime_resolve_virtual_method()
Summary: Make CDS reorder vtables so that dump time vtables match run time order, so when redefine classes reinitializes them, they aren't in the wrong order.
Reviewed-by: dcubed, acorn

duke@435 1 /*
trims@2708 2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
duke@435 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435 4 *
duke@435 5 * This code is free software; you can redistribute it and/or modify it
duke@435 6 * under the terms of the GNU General Public License version 2 only, as
duke@435 7 * published by the Free Software Foundation.
duke@435 8 *
duke@435 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@435 13 * accompanied this code).
duke@435 14 *
duke@435 15 * You should have received a copy of the GNU General Public License version
duke@435 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@435 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435 18 *
trims@1907 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907 20 * or visit www.oracle.com if you need additional information or have any
trims@1907 21 * questions.
duke@435 22 *
duke@435 23 */
duke@435 24
stefank@2314 25 #include "precompiled.hpp"
stefank@2314 26 #include "classfile/systemDictionary.hpp"
stefank@2314 27 #include "memory/classify.hpp"
duke@435 28
duke@435 29
duke@435 30 const char* ClassifyObjectClosure::object_type_name[number_object_types] = {
duke@435 31 "unknown",
duke@435 32 "instance",
duke@435 33 "instanceRef",
duke@435 34 "objArray",
duke@435 35 "symbol",
duke@435 36 "klass",
duke@435 37 "instanceKlass",
duke@435 38 "method",
duke@435 39 "constMethod",
duke@435 40 "methodData",
duke@435 41 "constantPool",
duke@435 42 "constantPoolCache",
duke@435 43 "typeArray",
duke@435 44 "compiledICHolder"
duke@435 45 };
duke@435 46
duke@435 47
duke@435 48 object_type ClassifyObjectClosure::classify_object(oop obj, bool count) {
duke@435 49 object_type type = unknown_type;
duke@435 50
duke@435 51 Klass* k = obj->blueprint();
duke@435 52
never@1577 53 if (k->as_klassOop() == SystemDictionary::Object_klass()) {
duke@435 54 tty->print_cr("Found the class!");
duke@435 55 }
duke@435 56
duke@435 57 if (count) {
duke@435 58 k->set_alloc_count(k->alloc_count() + 1);
duke@435 59 }
duke@435 60
duke@435 61 if (obj->is_instance()) {
duke@435 62 if (k->oop_is_instanceRef()) {
duke@435 63 type = instanceRef_type;
duke@435 64 } else {
duke@435 65 type = instance_type;
duke@435 66 }
duke@435 67 } else if (obj->is_typeArray()) {
duke@435 68 type = typeArray_type;
duke@435 69 } else if (obj->is_objArray()) {
duke@435 70 type = objArray_type;
duke@435 71 } else if (obj->is_klass()) {
duke@435 72 Klass* k = ((klassOop)obj)->klass_part();
duke@435 73 if (k->oop_is_instance()) {
duke@435 74 type = instanceKlass_type;
duke@435 75 } else {
duke@435 76 type = klass_type;
duke@435 77 }
duke@435 78 } else if (obj->is_method()) {
duke@435 79 type = method_type;
duke@435 80 } else if (obj->is_constMethod()) {
duke@435 81 type = constMethod_type;
duke@435 82 } else if (obj->is_methodData()) {
duke@435 83 ShouldNotReachHere();
duke@435 84 } else if (obj->is_constantPool()) {
duke@435 85 type = constantPool_type;
duke@435 86 } else if (obj->is_constantPoolCache()) {
duke@435 87 type = constantPoolCache_type;
duke@435 88 } else if (obj->is_compiledICHolder()) {
duke@435 89 type = compiledICHolder_type;
duke@435 90 } else {
duke@435 91 ShouldNotReachHere();
duke@435 92 }
duke@435 93
duke@435 94 assert(type != unknown_type, "found object of unknown type.");
duke@435 95 return type;
duke@435 96 }
duke@435 97
duke@435 98
duke@435 99 void ClassifyObjectClosure::reset() {
duke@435 100 for (int i = 0; i < number_object_types; ++i) {
duke@435 101 object_count[i] = 0;
duke@435 102 object_size[i] = 0;
duke@435 103 }
duke@435 104 total_object_count = 0;
duke@435 105 total_object_size = 0;
duke@435 106 }
duke@435 107
duke@435 108
duke@435 109 void ClassifyObjectClosure::do_object(oop obj) {
duke@435 110 int i = classify_object(obj, true);
duke@435 111 ++object_count[i];
duke@435 112 ++total_object_count;
duke@435 113 size_t size = obj->size() * HeapWordSize;
duke@435 114 object_size[i] += size;
duke@435 115 total_object_size += size;
duke@435 116 }
duke@435 117
duke@435 118
duke@435 119 size_t ClassifyObjectClosure::print() {
duke@435 120 int num_objects = 0;
duke@435 121 size_t size_objects = 0;
duke@435 122 for (int i = 0; i < number_object_types; ++i) {
duke@435 123 if (object_count[i] != 0) {
duke@435 124 tty->print_cr("%8d %-22s (%8d bytes, %5.2f bytes/object)",
duke@435 125 object_count[i], object_type_name[i], object_size[i],
duke@435 126 (float)object_size[i]/(float)object_count[i]);
duke@435 127 }
duke@435 128 num_objects += object_count[i];
duke@435 129 size_objects += object_size[i];
duke@435 130 }
duke@435 131 assert(num_objects == total_object_count, "Object count mismatch!");
duke@435 132 assert(size_objects == total_object_size, "Object size mismatch!");
duke@435 133
duke@435 134 tty->print_cr(" Total: %d objects, %d bytes", total_object_count,
duke@435 135 total_object_size);
duke@435 136 return total_object_size;
duke@435 137 }
duke@435 138
duke@435 139
duke@435 140 void ClassifyInstanceKlassClosure::do_object(oop obj) {
duke@435 141 int type = classify_object(obj, false);
duke@435 142 if (type == instanceKlass_type || type == klass_type) {
duke@435 143 Klass* k = ((klassOop)obj)->klass_part();
duke@435 144 if (k->alloc_count() > 0) {
duke@435 145 ResourceMark rm;
duke@435 146 const char *name;
duke@435 147 if (k->name() == NULL) {
duke@435 148
duke@435 149 if (obj == Universe::klassKlassObj()) {
duke@435 150 name = "_klassKlassObj";
duke@435 151 } else if (obj == Universe::arrayKlassKlassObj()) {
duke@435 152 name = "_arrayKlassKlassObj";
duke@435 153 } else if (obj == Universe::objArrayKlassKlassObj()) {
duke@435 154 name = "_objArrayKlassKlassObj";
duke@435 155 } else if (obj == Universe::typeArrayKlassKlassObj()) {
duke@435 156 name = "_typeArrayKlassKlassObj";
duke@435 157 } else if (obj == Universe::instanceKlassKlassObj()) {
duke@435 158 name = "_instanceKlassKlassObj";
duke@435 159 } else if (obj == Universe::methodKlassObj()) {
duke@435 160 name = "_methodKlassObj";
duke@435 161 } else if (obj == Universe::constMethodKlassObj()) {
duke@435 162 name = "_constMethodKlassObj";
duke@435 163 } else if (obj == Universe::constantPoolKlassObj()) {
duke@435 164 name = "_constantPoolKlassObj";
duke@435 165 } else if (obj == Universe::constantPoolCacheKlassObj()) {
duke@435 166 name = "_constantPoolCacheKlassObj";
duke@435 167 } else if (obj == Universe::compiledICHolderKlassObj()) {
duke@435 168 name = "_compiledICHolderKlassObj";
duke@435 169 } else if (obj == Universe::systemObjArrayKlassObj()) {
duke@435 170 name = "_systemObjArrayKlassObj";
duke@435 171 } else {
duke@435 172 name = "[unnamed]";
duke@435 173 }
duke@435 174 } else {
duke@435 175 name = k->external_name();
duke@435 176 }
duke@435 177 tty->print_cr("% 8d instances of %s", k->alloc_count(), name);
duke@435 178 }
duke@435 179 total_instances += k->alloc_count();
duke@435 180 }
duke@435 181 }
duke@435 182
duke@435 183
duke@435 184 void ClassifyInstanceKlassClosure::print() {
duke@435 185 tty->print_cr(" Total instances: %d.", total_instances);
duke@435 186 }
duke@435 187
duke@435 188
duke@435 189 void ClassifyInstanceKlassClosure::reset() {
duke@435 190 total_instances = 0;
duke@435 191 }

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