aoqi@0: /*
aoqi@0:  * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #include "precompiled.hpp"
aoqi@0: #include "classfile/javaClasses.hpp"
aoqi@0: #include "classfile/systemDictionary.hpp"
aoqi@0: #include "gc_implementation/shared/markSweep.inline.hpp"
aoqi@0: #include "gc_interface/collectedHeap.inline.hpp"
aoqi@0: #include "memory/genOopClosures.inline.hpp"
aoqi@0: #include "memory/oopFactory.hpp"
aoqi@0: #include "oops/instanceKlass.hpp"
aoqi@0: #include "oops/instanceClassLoaderKlass.hpp"
aoqi@0: #include "oops/instanceMirrorKlass.hpp"
aoqi@0: #include "oops/instanceOop.hpp"
aoqi@0: #include "oops/oop.inline.hpp"
aoqi@0: #include "oops/symbol.hpp"
aoqi@0: #include "runtime/handles.inline.hpp"
aoqi@0: #include "utilities/macros.hpp"
aoqi@0: #if INCLUDE_ALL_GCS
aoqi@0: #include "gc_implementation/parNew/parOopClosures.inline.hpp"
aoqi@0: #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"
aoqi@0: #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
aoqi@0: #include "oops/oop.pcgc.inline.hpp"
aoqi@0: #endif // INCLUDE_ALL_GCS
aoqi@0: 
aoqi@0: #define if_do_metadata_checked(closure, nv_suffix)                    \
aoqi@0:   /* Make sure the non-virtual and the virtual versions match. */     \
aoqi@0:   assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \
aoqi@0:       "Inconsistency in do_metadata");                                \
aoqi@0:   if (closure->do_metadata##nv_suffix())
aoqi@0: 
aoqi@0: // Macro to define InstanceClassLoaderKlass::oop_oop_iterate for virtual/nonvirtual for
aoqi@0: // all closures.  Macros calling macros above for each oop size.
aoqi@0: // Since ClassLoader objects have only a pointer to the loader_data, they are not
aoqi@0: // compressed nor does the pointer move.
aoqi@0: 
aoqi@0: #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)\
aoqi@0:                                                                                 \
aoqi@0: int InstanceClassLoaderKlass::                                                  \
aoqi@0: oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) {                  \
aoqi@0:   /* Get size before changing pointers */                                       \
aoqi@0:   SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
aoqi@0:   int size = InstanceKlass::oop_oop_iterate##nv_suffix(obj, closure);           \
aoqi@0:                                                                                 \
aoqi@0:   if_do_metadata_checked(closure, nv_suffix) {                                  \
aoqi@0:     ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj);             \
aoqi@0:     /* cld can be null if we have a non-registered class loader. */             \
aoqi@0:     if (cld != NULL) {                                                          \
aoqi@0:       closure->do_class_loader_data(cld);                                       \
aoqi@0:     }                                                                           \
aoqi@0:   }                                                                             \
aoqi@0:                                                                                 \
aoqi@0:   return size;                                                                  \
aoqi@0: }
aoqi@0: 
aoqi@0: #if INCLUDE_ALL_GCS
aoqi@0: #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \
aoqi@0:                                                                                 \
aoqi@0: int InstanceClassLoaderKlass::                                                  \
aoqi@0: oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) {        \
aoqi@0:   /* Get size before changing pointers */                                       \
aoqi@0:   SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
aoqi@0:   int size = InstanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \
aoqi@0:   return size;                                                                  \
aoqi@0: }
aoqi@0: #endif // INCLUDE_ALL_GCS
aoqi@0: 
aoqi@0: 
aoqi@0: #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix)      \
aoqi@0:                                                                                 \
aoqi@0: int InstanceClassLoaderKlass::                                                  \
aoqi@0: oop_oop_iterate##nv_suffix##_m(oop obj,                                         \
aoqi@0:                                OopClosureType* closure,                         \
aoqi@0:                                MemRegion mr) {                                  \
aoqi@0:   SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
aoqi@0:                                                                                 \
aoqi@0:   int size = InstanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr);   \
aoqi@0:                                                                                 \
aoqi@0:   if_do_metadata_checked(closure, nv_suffix) {                                  \
aoqi@0:     if (mr.contains(obj)) {                                                     \
aoqi@0:       ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj);           \
aoqi@0:       /* cld can be null if we have a non-registered class loader. */           \
aoqi@0:       if (cld != NULL) {                                                        \
aoqi@0:         closure->do_class_loader_data(cld);                                     \
aoqi@0:       }                                                                         \
aoqi@0:     }                                                                           \
aoqi@0:   }                                                                             \
aoqi@0:                                                                                 \
aoqi@0:   return size;                                                                  \
aoqi@0: }
aoqi@0: 
aoqi@0: ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN)
aoqi@0: ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN)
aoqi@0: #if INCLUDE_ALL_GCS
aoqi@0: ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
aoqi@0: ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
aoqi@0: #endif // INCLUDE_ALL_GCS
aoqi@0: ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m)
aoqi@0: ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m)
aoqi@0: 
aoqi@0: void InstanceClassLoaderKlass::oop_follow_contents(oop obj) {
aoqi@0:   InstanceKlass::oop_follow_contents(obj);
aoqi@0:   ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
aoqi@0: 
aoqi@0:   // We must NULL check here, since the class loader
aoqi@0:   // can be found before the loader data has been set up.
aoqi@0:   if(loader_data != NULL) {
aoqi@0:     MarkSweep::follow_class_loader(loader_data);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: #if INCLUDE_ALL_GCS
aoqi@0: void InstanceClassLoaderKlass::oop_follow_contents(ParCompactionManager* cm,
aoqi@0:         oop obj) {
aoqi@0:   InstanceKlass::oop_follow_contents(cm, obj);
aoqi@0:   ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
aoqi@0:   if (loader_data != NULL) {
aoqi@0:     PSParallelCompact::follow_class_loader(cm, loader_data);
aoqi@0:   }
aoqi@0: }
aoqi@0: 
aoqi@0: void InstanceClassLoaderKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
aoqi@0:   InstanceKlass::oop_push_contents(pm, obj);
aoqi@0: 
aoqi@0:   // This is called by the young collector. It will already have taken care of
aoqi@0:   // all class loader data. So, we don't have to follow the class loader ->
aoqi@0:   // class loader data link.
aoqi@0: }
aoqi@0: 
aoqi@0: int InstanceClassLoaderKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
aoqi@0:   InstanceKlass::oop_update_pointers(cm, obj);
aoqi@0:   return size_helper();
aoqi@0: }
aoqi@0: #endif // INCLUDE_ALL_GCS
aoqi@0: