Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/oops/instanceClassLoaderKlass.cpp
src/share/vm/oops/instanceClassLoaderKlass.cpp
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| 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/oopFactory.hpp" | |
| 32 #include "oops/instanceKlass.hpp" | |
| 33 #include "oops/instanceClassLoaderKlass.hpp" | |
| 34 #include "oops/instanceMirrorKlass.hpp" | |
| 35 #include "oops/instanceOop.hpp" | |
| 36 #include "oops/oop.inline.hpp" | |
| 37 #include "oops/symbol.hpp" | |
| 38 #include "runtime/handles.inline.hpp" | |
| 39 #include "utilities/macros.hpp" | |
| 40 #if INCLUDE_ALL_GCS | |
| 41 #include "gc_implementation/parNew/parOopClosures.inline.hpp" | |
| 42 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" | |
| 43 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" | |
| 44 #include "oops/oop.pcgc.inline.hpp" | |
| 45 #endif // INCLUDE_ALL_GCS | |
| 46 | |
| 47 #define if_do_metadata_checked(closure, nv_suffix) \ | |
| 48 /* Make sure the non-virtual and the virtual versions match. */ \ | |
| 49 assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \ | |
| 50 "Inconsistency in do_metadata"); \ | |
| 51 if (closure->do_metadata##nv_suffix()) | |
| 52 | |
| 53 // Macro to define InstanceClassLoaderKlass::oop_oop_iterate for virtual/nonvirtual for | |
| 54 // all closures. Macros calling macros above for each oop size. | |
| 55 // Since ClassLoader objects have only a pointer to the loader_data, they are not | |
| 56 // compressed nor does the pointer move. | |
| 57 | |
| 58 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)\ | |
| 59 \ | |
| 60 int InstanceClassLoaderKlass:: \ | |
| 61 oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ | |
| 62 /* Get size before changing pointers */ \ | |
| 63 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ | |
| 64 int size = InstanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \ | |
| 65 \ | |
| 66 if_do_metadata_checked(closure, nv_suffix) { \ | |
| 67 ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \ | |
| 68 /* cld can be null if we have a non-registered class loader. */ \ | |
| 69 if (cld != NULL) { \ | |
| 70 closure->do_class_loader_data(cld); \ | |
| 71 } \ | |
| 72 } \ | |
| 73 \ | |
| 74 return size; \ | |
| 75 } | |
| 76 | |
| 77 #if INCLUDE_ALL_GCS | |
| 78 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ | |
| 79 \ | |
| 80 int InstanceClassLoaderKlass:: \ | |
| 81 oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \ | |
| 82 /* Get size before changing pointers */ \ | |
| 83 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ | |
| 84 int size = InstanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \ | |
| 85 return size; \ | |
| 86 } | |
| 87 #endif // INCLUDE_ALL_GCS | |
| 88 | |
| 89 | |
| 90 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ | |
| 91 \ | |
| 92 int InstanceClassLoaderKlass:: \ | |
| 93 oop_oop_iterate##nv_suffix##_m(oop obj, \ | |
| 94 OopClosureType* closure, \ | |
| 95 MemRegion mr) { \ | |
| 96 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ | |
| 97 \ | |
| 98 int size = InstanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \ | |
| 99 \ | |
| 100 if_do_metadata_checked(closure, nv_suffix) { \ | |
| 101 if (mr.contains(obj)) { \ | |
| 102 ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \ | |
| 103 /* cld can be null if we have a non-registered class loader. */ \ | |
| 104 if (cld != NULL) { \ | |
| 105 closure->do_class_loader_data(cld); \ | |
| 106 } \ | |
| 107 } \ | |
| 108 } \ | |
| 109 \ | |
| 110 return size; \ | |
| 111 } | |
| 112 | |
| 113 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN) | |
| 114 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN) | |
| 115 #if INCLUDE_ALL_GCS | |
| 116 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) | |
| 117 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) | |
| 118 #endif // INCLUDE_ALL_GCS | |
| 119 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m) | |
| 120 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m) | |
| 121 | |
| 122 void InstanceClassLoaderKlass::oop_follow_contents(oop obj) { | |
| 123 InstanceKlass::oop_follow_contents(obj); | |
| 124 ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj); | |
| 125 | |
| 126 // We must NULL check here, since the class loader | |
| 127 // can be found before the loader data has been set up. | |
| 128 if(loader_data != NULL) { | |
| 129 MarkSweep::follow_class_loader(loader_data); | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 #if INCLUDE_ALL_GCS | |
| 134 void InstanceClassLoaderKlass::oop_follow_contents(ParCompactionManager* cm, | |
| 135 oop obj) { | |
| 136 InstanceKlass::oop_follow_contents(cm, obj); | |
| 137 ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj); | |
| 138 if (loader_data != NULL) { | |
| 139 PSParallelCompact::follow_class_loader(cm, loader_data); | |
| 140 } | |
| 141 } | |
| 142 | |
| 143 void InstanceClassLoaderKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { | |
| 144 InstanceKlass::oop_push_contents(pm, obj); | |
| 145 | |
| 146 // This is called by the young collector. It will already have taken care of | |
| 147 // all class loader data. So, we don't have to follow the class loader -> | |
| 148 // class loader data link. | |
| 149 } | |
| 150 | |
| 151 int InstanceClassLoaderKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { | |
| 152 InstanceKlass::oop_update_pointers(cm, obj); | |
| 153 return size_helper(); | |
| 154 } | |
| 155 #endif // INCLUDE_ALL_GCS | |
| 156 |
