Mercurial > hg > truffle
annotate src/share/vm/memory/classify.cpp @ 3302:2a3da7eaf4a6
7036747: 7017009 reappeared, problem with ElfStringTable
Summary: Created new "new" operator for CHeapObj that allows malloc to fail without causing fatal error. Also replaced "HeapAllocate" with "os::malloc" in decoder code to allow decoder to handle low memory scenario.
Reviewed-by: coleenp, dholmes
| author | zgu |
|---|---|
| date | Wed, 27 Apr 2011 09:09:57 -0400 |
| parents | 1d1603768966 |
| children |
| rev | line source |
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| 0 | 1 /* |
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7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "memory/classify.hpp" | |
| 0 | 28 |
| 29 | |
| 30 const char* ClassifyObjectClosure::object_type_name[number_object_types] = { | |
| 31 "unknown", | |
| 32 "instance", | |
| 33 "instanceRef", | |
| 34 "objArray", | |
| 35 "symbol", | |
| 36 "klass", | |
| 37 "instanceKlass", | |
| 38 "method", | |
| 39 "constMethod", | |
| 40 "methodData", | |
| 41 "constantPool", | |
| 42 "constantPoolCache", | |
| 43 "typeArray", | |
| 44 "compiledICHolder" | |
| 45 }; | |
| 46 | |
| 47 | |
| 48 object_type ClassifyObjectClosure::classify_object(oop obj, bool count) { | |
| 49 object_type type = unknown_type; | |
| 50 | |
| 51 Klass* k = obj->blueprint(); | |
| 52 | |
| 1142 | 53 if (k->as_klassOop() == SystemDictionary::Object_klass()) { |
| 0 | 54 tty->print_cr("Found the class!"); |
| 55 } | |
| 56 | |
| 57 if (count) { | |
| 58 k->set_alloc_count(k->alloc_count() + 1); | |
| 59 } | |
| 60 | |
| 61 if (obj->is_instance()) { | |
| 62 if (k->oop_is_instanceRef()) { | |
| 63 type = instanceRef_type; | |
| 64 } else { | |
| 65 type = instance_type; | |
| 66 } | |
| 67 } else if (obj->is_typeArray()) { | |
| 68 type = typeArray_type; | |
| 69 } else if (obj->is_objArray()) { | |
| 70 type = objArray_type; | |
| 71 } else if (obj->is_klass()) { | |
| 72 Klass* k = ((klassOop)obj)->klass_part(); | |
| 73 if (k->oop_is_instance()) { | |
| 74 type = instanceKlass_type; | |
| 75 } else { | |
| 76 type = klass_type; | |
| 77 } | |
| 78 } else if (obj->is_method()) { | |
| 79 type = method_type; | |
| 80 } else if (obj->is_constMethod()) { | |
| 81 type = constMethod_type; | |
| 82 } else if (obj->is_methodData()) { | |
| 83 ShouldNotReachHere(); | |
| 84 } else if (obj->is_constantPool()) { | |
| 85 type = constantPool_type; | |
| 86 } else if (obj->is_constantPoolCache()) { | |
| 87 type = constantPoolCache_type; | |
| 88 } else if (obj->is_compiledICHolder()) { | |
| 89 type = compiledICHolder_type; | |
| 90 } else { | |
| 91 ShouldNotReachHere(); | |
| 92 } | |
| 93 | |
| 94 assert(type != unknown_type, "found object of unknown type."); | |
| 95 return type; | |
| 96 } | |
| 97 | |
| 98 | |
| 99 void ClassifyObjectClosure::reset() { | |
| 100 for (int i = 0; i < number_object_types; ++i) { | |
| 101 object_count[i] = 0; | |
| 102 object_size[i] = 0; | |
| 103 } | |
| 104 total_object_count = 0; | |
| 105 total_object_size = 0; | |
| 106 } | |
| 107 | |
| 108 | |
| 109 void ClassifyObjectClosure::do_object(oop obj) { | |
| 110 int i = classify_object(obj, true); | |
| 111 ++object_count[i]; | |
| 112 ++total_object_count; | |
| 113 size_t size = obj->size() * HeapWordSize; | |
| 114 object_size[i] += size; | |
| 115 total_object_size += size; | |
| 116 } | |
| 117 | |
| 118 | |
| 119 size_t ClassifyObjectClosure::print() { | |
| 120 int num_objects = 0; | |
| 121 size_t size_objects = 0; | |
| 122 for (int i = 0; i < number_object_types; ++i) { | |
| 123 if (object_count[i] != 0) { | |
| 124 tty->print_cr("%8d %-22s (%8d bytes, %5.2f bytes/object)", | |
| 125 object_count[i], object_type_name[i], object_size[i], | |
| 126 (float)object_size[i]/(float)object_count[i]); | |
| 127 } | |
| 128 num_objects += object_count[i]; | |
| 129 size_objects += object_size[i]; | |
| 130 } | |
| 131 assert(num_objects == total_object_count, "Object count mismatch!"); | |
| 132 assert(size_objects == total_object_size, "Object size mismatch!"); | |
| 133 | |
| 134 tty->print_cr(" Total: %d objects, %d bytes", total_object_count, | |
| 135 total_object_size); | |
| 136 return total_object_size; | |
| 137 } | |
| 138 | |
| 139 | |
| 140 void ClassifyInstanceKlassClosure::do_object(oop obj) { | |
| 141 int type = classify_object(obj, false); | |
| 142 if (type == instanceKlass_type || type == klass_type) { | |
| 143 Klass* k = ((klassOop)obj)->klass_part(); | |
| 144 if (k->alloc_count() > 0) { | |
| 145 ResourceMark rm; | |
| 146 const char *name; | |
| 147 if (k->name() == NULL) { | |
| 148 | |
| 149 if (obj == Universe::klassKlassObj()) { | |
| 150 name = "_klassKlassObj"; | |
| 151 } else if (obj == Universe::arrayKlassKlassObj()) { | |
| 152 name = "_arrayKlassKlassObj"; | |
| 153 } else if (obj == Universe::objArrayKlassKlassObj()) { | |
| 154 name = "_objArrayKlassKlassObj"; | |
| 155 } else if (obj == Universe::typeArrayKlassKlassObj()) { | |
| 156 name = "_typeArrayKlassKlassObj"; | |
| 157 } else if (obj == Universe::instanceKlassKlassObj()) { | |
| 158 name = "_instanceKlassKlassObj"; | |
| 159 } else if (obj == Universe::methodKlassObj()) { | |
| 160 name = "_methodKlassObj"; | |
| 161 } else if (obj == Universe::constMethodKlassObj()) { | |
| 162 name = "_constMethodKlassObj"; | |
| 163 } else if (obj == Universe::constantPoolKlassObj()) { | |
| 164 name = "_constantPoolKlassObj"; | |
| 165 } else if (obj == Universe::constantPoolCacheKlassObj()) { | |
| 166 name = "_constantPoolCacheKlassObj"; | |
| 167 } else if (obj == Universe::compiledICHolderKlassObj()) { | |
| 168 name = "_compiledICHolderKlassObj"; | |
| 169 } else if (obj == Universe::systemObjArrayKlassObj()) { | |
| 170 name = "_systemObjArrayKlassObj"; | |
| 171 } else { | |
| 172 name = "[unnamed]"; | |
| 173 } | |
| 174 } else { | |
| 175 name = k->external_name(); | |
| 176 } | |
| 177 tty->print_cr("% 8d instances of %s", k->alloc_count(), name); | |
| 178 } | |
| 179 total_instances += k->alloc_count(); | |
| 180 } | |
| 181 } | |
| 182 | |
| 183 | |
| 184 void ClassifyInstanceKlassClosure::print() { | |
| 185 tty->print_cr(" Total instances: %d.", total_instances); | |
| 186 } | |
| 187 | |
| 188 | |
| 189 void ClassifyInstanceKlassClosure::reset() { | |
| 190 total_instances = 0; | |
| 191 } |