1 /* 2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved. 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 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "classfile/javaClasses.hpp" 27 #include "classfile/systemDictionary.hpp" 28 #include "gc_implementation/shared/markSweep.inline.hpp" 29 #include "gc_interface/collectedHeap.inline.hpp" 30 #include "memory/genOopClosures.inline.hpp" 31 #include "memory/iterator.inline.hpp" 32 #include "memory/oopFactory.hpp" 33 #include "oops/instanceKlass.hpp" 34 #include "oops/instanceClassLoaderKlass.hpp" 35 #if INCLUDE_ALL_GCS 36 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp" 37 #endif 38 39 InstanceClassLoaderKlass::InstanceClassLoaderKlass(int vtable_len, int itable_len, int static_field_size, int nonstatic_oop_map_size, ReferenceType rt, AccessFlags access_flags, bool is_anonymous) 40 : InstanceKlass(vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, access_flags, is_anonymous, _instance_class_loader) {} 41 42 void InstanceClassLoaderKlass::oop_follow_contents(oop obj) { 43 InstanceKlass::oop_follow_contents(obj); 44 ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj); 45 46 // We must NULL check here, since the class loader 47 // can be found before the loader data has been set up. 48 if(loader_data != NULL) { 49 MarkSweep::follow_class_loader(loader_data); 50 } 51 } 52 53 #if INCLUDE_ALL_GCS 54 void InstanceClassLoaderKlass::oop_follow_contents(ParCompactionManager* cm, 55 oop obj) { 56 InstanceKlass::oop_follow_contents(cm, obj); 57 ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj); 58 if (loader_data != NULL) { 59 PSParallelCompact::follow_class_loader(cm, loader_data); 60 } 61 } 62 63 void InstanceClassLoaderKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { 64 InstanceKlass::oop_push_contents(pm, obj); 65 66 // This is called by the young collector. It will already have taken care of 67 // all class loader data. So, we don't have to follow the class loader -> 68 // class loader data link. 69 } 70 71 int InstanceClassLoaderKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { 72 InstanceKlass::oop_update_pointers(cm, obj); 73 return size_helper(); 74 } 75 76 #endif // INCLUDE_ALL_GCS 77