/*
* Copyright (c) 2011, 2012, 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"
#ifndef SERIALGC
#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
#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; \
}
#ifndef SERIALGC
#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 // !SERIALGC
#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)
#ifndef SERIALGC
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 // SERIALGC
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);
}
}
#ifndef SERIALGC
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);
ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
if (loader_data != NULL) {
PSParallelCompact::adjust_class_loader(cm, loader_data);
}
return size_helper();
}
#endif // SERIALGC