1 /*
   2 /*
   3  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_INLINE_HPP
  27 #define SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_INLINE_HPP
  28 
  29 #include "classfile/javaClasses.hpp"
  30 #include "oops/instanceClassLoaderKlass.hpp"
  31 #include "oops/instanceKlass.inline.hpp"
  32 #include "oops/oop.inline.hpp"
  33 #include "utilities/debug.hpp"
  34 #include "utilities/globalDefinitions.hpp"
  35 #include "utilities/macros.hpp"
  36 
  37 template <bool nv, class OopClosureType>
  38 inline int InstanceClassLoaderKlass::oop_oop_iterate(oop obj, OopClosureType* closure) {
  39   int size = InstanceKlass::oop_oop_iterate<nv>(obj, closure);
  40 
  41   if (Devirtualizer<nv>::do_metadata(closure)) {
  42     ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj);
  43     // cld can be null if we have a non-registered class loader.
  44     if (cld != NULL) {
  45       closure->do_class_loader_data(cld);
  46     }
  47   }
  48 
  49   return size;
  50 }
  51 
  52 #if INCLUDE_ALL_GCS
  53 template <bool nv, class OopClosureType>
  54 inline int InstanceClassLoaderKlass::oop_oop_iterate_reverse(oop obj, OopClosureType* closure) {
  55   int size = InstanceKlass::oop_oop_iterate_reverse<nv>(obj, closure);
  56 
  57   assert(!Devirtualizer<nv>::do_metadata(closure),
  58       "Code to handle metadata is not implemented");
  59 
  60   return size;
  61 }
  62 #endif // INCLUDE_ALL_GCS
  63 
  64 
  65 template <bool nv, class OopClosureType>
  66 inline int InstanceClassLoaderKlass::oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr) {
  67   int size = InstanceKlass::oop_oop_iterate_bounded<nv>(obj, closure, mr);
  68 
  69   if (Devirtualizer<nv>::do_metadata(closure)) {
  70     if (mr.contains(obj)) {
  71       ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj);
  72       // cld can be null if we have a non-registered class loader.
  73       if (cld != NULL) {
  74         closure->do_class_loader_data(cld);
  75       }
  76     }
  77   }
  78 
  79   return size;
  80 }
  81 
  82 
  83 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)              \
  84                                                                                               \
  85 int InstanceClassLoaderKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) {  \
  86   return oop_oop_iterate<nvs_to_bool(nv_suffix)>(obj, closure);                               \
  87 }
  88 
  89 #if INCLUDE_ALL_GCS
  90 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix)              \
  91                                                                                                         \
  92 int InstanceClassLoaderKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) {  \
  93   return oop_oop_iterate_reverse<nvs_to_bool(nv_suffix)>(obj, closure);                                 \
  94 }
  95 #else
  96 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix)
  97 #endif
  98 
  99 
 100 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix)                              \
 101                                                                                                                 \
 102 int InstanceClassLoaderKlass::oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* closure, MemRegion mr) {  \
 103   return oop_oop_iterate_bounded<nvs_to_bool(nv_suffix)>(obj, closure, mr);                                     \
 104 }
 105 
 106 #define ALL_INSTANCE_CLASS_LOADER_KLASS_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)  \
 107   InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN(          OopClosureType, nv_suffix)     \
 108   InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m(        OopClosureType, nv_suffix)     \
 109   InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix)
 110 
 111 #endif // SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_INLINE_HPP