| /* |
| * 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/iterator.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 |
| |
| // 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 |
| |