Mercurial > hg > truffle
diff src/share/vm/memory/classify.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 4ce7240d622c |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/memory/classify.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,194 @@ +/* + * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +# include "incls/_precompiled.incl" +# include "incls/_classify.cpp.incl" + + +const char* ClassifyObjectClosure::object_type_name[number_object_types] = { + "unknown", + "instance", + "instanceRef", + "objArray", + "symbol", + "klass", + "instanceKlass", + "method", + "constMethod", + "methodData", + "constantPool", + "constantPoolCache", + "typeArray", + "compiledICHolder" +}; + + +object_type ClassifyObjectClosure::classify_object(oop obj, bool count) { + object_type type = unknown_type; + + Klass* k = obj->blueprint(); + + if (k->as_klassOop() == SystemDictionary::object_klass()) { + tty->print_cr("Found the class!"); + } + + if (count) { + k->set_alloc_count(k->alloc_count() + 1); + } + + if (obj->is_instance()) { + if (k->oop_is_instanceRef()) { + type = instanceRef_type; + } else { + type = instance_type; + } + } else if (obj->is_typeArray()) { + type = typeArray_type; + } else if (obj->is_objArray()) { + type = objArray_type; + } else if (obj->is_symbol()) { + type = symbol_type; + } else if (obj->is_klass()) { + Klass* k = ((klassOop)obj)->klass_part(); + if (k->oop_is_instance()) { + type = instanceKlass_type; + } else { + type = klass_type; + } + } else if (obj->is_method()) { + type = method_type; + } else if (obj->is_constMethod()) { + type = constMethod_type; + } else if (obj->is_methodData()) { + ShouldNotReachHere(); + } else if (obj->is_constantPool()) { + type = constantPool_type; + } else if (obj->is_constantPoolCache()) { + type = constantPoolCache_type; + } else if (obj->is_compiledICHolder()) { + type = compiledICHolder_type; + } else { + ShouldNotReachHere(); + } + + assert(type != unknown_type, "found object of unknown type."); + return type; +} + + +void ClassifyObjectClosure::reset() { + for (int i = 0; i < number_object_types; ++i) { + object_count[i] = 0; + object_size[i] = 0; + } + total_object_count = 0; + total_object_size = 0; +} + + +void ClassifyObjectClosure::do_object(oop obj) { + int i = classify_object(obj, true); + ++object_count[i]; + ++total_object_count; + size_t size = obj->size() * HeapWordSize; + object_size[i] += size; + total_object_size += size; +} + + +size_t ClassifyObjectClosure::print() { + int num_objects = 0; + size_t size_objects = 0; + for (int i = 0; i < number_object_types; ++i) { + if (object_count[i] != 0) { + tty->print_cr("%8d %-22s (%8d bytes, %5.2f bytes/object)", + object_count[i], object_type_name[i], object_size[i], + (float)object_size[i]/(float)object_count[i]); + } + num_objects += object_count[i]; + size_objects += object_size[i]; + } + assert(num_objects == total_object_count, "Object count mismatch!"); + assert(size_objects == total_object_size, "Object size mismatch!"); + + tty->print_cr(" Total: %d objects, %d bytes", total_object_count, + total_object_size); + return total_object_size; +} + + +void ClassifyInstanceKlassClosure::do_object(oop obj) { + int type = classify_object(obj, false); + if (type == instanceKlass_type || type == klass_type) { + Klass* k = ((klassOop)obj)->klass_part(); + if (k->alloc_count() > 0) { + ResourceMark rm; + const char *name; + if (k->name() == NULL) { + + if (obj == Universe::klassKlassObj()) { + name = "_klassKlassObj"; + } else if (obj == Universe::arrayKlassKlassObj()) { + name = "_arrayKlassKlassObj"; + } else if (obj == Universe::objArrayKlassKlassObj()) { + name = "_objArrayKlassKlassObj"; + } else if (obj == Universe::typeArrayKlassKlassObj()) { + name = "_typeArrayKlassKlassObj"; + } else if (obj == Universe::instanceKlassKlassObj()) { + name = "_instanceKlassKlassObj"; + } else if (obj == Universe::symbolKlassObj()) { + name = "_symbolKlassObj"; + } else if (obj == Universe::methodKlassObj()) { + name = "_methodKlassObj"; + } else if (obj == Universe::constMethodKlassObj()) { + name = "_constMethodKlassObj"; + } else if (obj == Universe::constantPoolKlassObj()) { + name = "_constantPoolKlassObj"; + } else if (obj == Universe::constantPoolCacheKlassObj()) { + name = "_constantPoolCacheKlassObj"; + } else if (obj == Universe::compiledICHolderKlassObj()) { + name = "_compiledICHolderKlassObj"; + } else if (obj == Universe::systemObjArrayKlassObj()) { + name = "_systemObjArrayKlassObj"; + } else { + name = "[unnamed]"; + } + } else { + name = k->external_name(); + } + tty->print_cr("% 8d instances of %s", k->alloc_count(), name); + } + total_instances += k->alloc_count(); + } +} + + +void ClassifyInstanceKlassClosure::print() { + tty->print_cr(" Total instances: %d.", total_instances); +} + + +void ClassifyInstanceKlassClosure::reset() { + total_instances = 0; +}