/*

 * 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"

#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

#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;                                                                  \

}

#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);

  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 // INCLUDE_ALL_GCS