1 /*
   2  * Copyright (c) 2015, 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 #ifndef SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_INLINE_HPP
  26 #define SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_INLINE_HPP
  27 
  28 #include "classfile/javaClasses.hpp"
  29 #include "oops/instanceClassLoaderKlass.hpp"
  30 #include "oops/instanceKlass.inline.hpp"
  31 #include "oops/oop.inline.hpp"
  32 #include "utilities/debug.hpp"
  33 #include "utilities/globalDefinitions.hpp"
  34 #include "utilities/macros.hpp"
  35 
  36 template <bool nv, class OopClosureType>
  37 inline int InstanceClassLoaderKlass::oop_oop_iterate(oop obj, OopClosureType* closure) {
  38   int size = InstanceKlass::oop_oop_iterate<nv>(obj, closure);
  39 
  40   if (Devirtualizer<nv>::do_metadata(closure)) {
  41     ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj);
  42     // cld can be null if we have a non-registered class loader.
  43     if (cld != NULL) {
  44       closure->do_class_loader_data(cld);
  45     }
  46   }
  47 
  48   return size;
  49 }
  50 
  51 #if INCLUDE_ALL_GCS
  52 template <bool nv, class OopClosureType>
  53 inline int InstanceClassLoaderKlass::oop_oop_iterate_reverse(oop obj, OopClosureType* closure) {
  54   int size = InstanceKlass::oop_oop_iterate_reverse<nv>(obj, closure);
  55 
  56   assert(!Devirtualizer<nv>::do_metadata(closure),
  57       "Code to handle metadata is not implemented");
  58 
  59   return size;
  60 }
  61 #endif // INCLUDE_ALL_GCS
  62 
  63 
  64 template <bool nv, class OopClosureType>
  65 inline int InstanceClassLoaderKlass::oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr) {
  66   int size = InstanceKlass::oop_oop_iterate_bounded<nv>(obj, closure, mr);
  67 
  68   if (Devirtualizer<nv>::do_metadata(closure)) {
  69     if (mr.contains(obj)) {
  70       ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj);
  71       // cld can be null if we have a non-registered class loader.
  72       if (cld != NULL) {
  73         closure->do_class_loader_data(cld);
  74       }
  75     }
  76   }
  77 
  78   return size;
  79 }
  80 
  81 
  82 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)              \
  83                                                                                               \
  84 int InstanceClassLoaderKlass::oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) {  \
  85   return oop_oop_iterate<nvs_to_bool(nv_suffix)>(obj, closure);                               \
  86 }
  87 
  88 #if INCLUDE_ALL_GCS
  89 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix)              \
  90                                                                                                         \
  91 int InstanceClassLoaderKlass::oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) {  \
  92   return oop_oop_iterate_reverse<nvs_to_bool(nv_suffix)>(obj, closure);                                 \
  93 }
  94 #else
  95 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix)
  96 #endif
  97 
  98 
  99 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix)                              \
 100                                                                                                                 \
 101 int InstanceClassLoaderKlass::oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* closure, MemRegion mr) {  \
 102   return oop_oop_iterate_bounded<nvs_to_bool(nv_suffix)>(obj, closure, mr);                                     \
 103 }
 104 
 105 #define ALL_INSTANCE_CLASS_LOADER_KLASS_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)  \
 106   InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN(          OopClosureType, nv_suffix)     \
 107   InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m(        OopClosureType, nv_suffix)     \
 108   InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix)
 109 
 110 #endif // SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_INLINE_HPP