diff -r 000000000000 -r f90c822e73f8 src/share/vm/oops/instanceClassLoaderKlass.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/oops/instanceClassLoaderKlass.cpp Wed Apr 27 01:25:04 2016 +0800 @@ -0,0 +1,156 @@ +/* + * Copyright (c) 2011, 2013, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +#include "precompiled.hpp" +#include "classfile/javaClasses.hpp" +#include "classfile/systemDictionary.hpp" +#include "gc_implementation/shared/markSweep.inline.hpp" +#include "gc_interface/collectedHeap.inline.hpp" +#include "memory/genOopClosures.inline.hpp" +#include "memory/oopFactory.hpp" +#include "oops/instanceKlass.hpp" +#include "oops/instanceClassLoaderKlass.hpp" +#include "oops/instanceMirrorKlass.hpp" +#include "oops/instanceOop.hpp" +#include "oops/oop.inline.hpp" +#include "oops/symbol.hpp" +#include "runtime/handles.inline.hpp" +#include "utilities/macros.hpp" +#if INCLUDE_ALL_GCS +#include "gc_implementation/parNew/parOopClosures.inline.hpp" +#include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" +#include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" +#include "oops/oop.pcgc.inline.hpp" +#endif // INCLUDE_ALL_GCS + +#define if_do_metadata_checked(closure, nv_suffix) \ + /* Make sure the non-virtual and the virtual versions match. */ \ + assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \ + "Inconsistency in do_metadata"); \ + if (closure->do_metadata##nv_suffix()) + +// Macro to define InstanceClassLoaderKlass::oop_oop_iterate for virtual/nonvirtual for +// all closures. Macros calling macros above for each oop size. +// Since ClassLoader objects have only a pointer to the loader_data, they are not +// compressed nor does the pointer move. + +#define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)\ + \ +int InstanceClassLoaderKlass:: \ +oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ + /* Get size before changing pointers */ \ + SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ + int size = InstanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \ + \ + if_do_metadata_checked(closure, nv_suffix) { \ + ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \ + /* cld can be null if we have a non-registered class loader. */ \ + if (cld != NULL) { \ + closure->do_class_loader_data(cld); \ + } \ + } \ + \ + return size; \ +} + +#if INCLUDE_ALL_GCS +#define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ + \ +int InstanceClassLoaderKlass:: \ +oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \ + /* Get size before changing pointers */ \ + SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ + int size = InstanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \ + return size; \ +} +#endif // INCLUDE_ALL_GCS + + +#define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ + \ +int InstanceClassLoaderKlass:: \ +oop_oop_iterate##nv_suffix##_m(oop obj, \ + OopClosureType* closure, \ + MemRegion mr) { \ + SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ + \ + int size = InstanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \ + \ + if_do_metadata_checked(closure, nv_suffix) { \ + if (mr.contains(obj)) { \ + ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \ + /* cld can be null if we have a non-registered class loader. */ \ + if (cld != NULL) { \ + closure->do_class_loader_data(cld); \ + } \ + } \ + } \ + \ + return size; \ +} + +ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN) +ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN) +#if INCLUDE_ALL_GCS +ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) +ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) +#endif // INCLUDE_ALL_GCS +ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m) +ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m) + +void InstanceClassLoaderKlass::oop_follow_contents(oop obj) { + InstanceKlass::oop_follow_contents(obj); + ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj); + + // We must NULL check here, since the class loader + // can be found before the loader data has been set up. + if(loader_data != NULL) { + MarkSweep::follow_class_loader(loader_data); + } +} + +#if INCLUDE_ALL_GCS +void InstanceClassLoaderKlass::oop_follow_contents(ParCompactionManager* cm, + oop obj) { + InstanceKlass::oop_follow_contents(cm, obj); + ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj); + if (loader_data != NULL) { + PSParallelCompact::follow_class_loader(cm, loader_data); + } +} + +void InstanceClassLoaderKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { + InstanceKlass::oop_push_contents(pm, obj); + + // This is called by the young collector. It will already have taken care of + // all class loader data. So, we don't have to follow the class loader -> + // class loader data link. +} + +int InstanceClassLoaderKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { + InstanceKlass::oop_update_pointers(cm, obj); + return size_helper(); +} +#endif // INCLUDE_ALL_GCS +