*** old/src/hotspot/share/classfile/systemDictionary.cpp	Thu Oct  5 17:16:16 2017
--- new/src/hotspot/share/classfile/systemDictionary.cpp	Thu Oct  5 17:16:16 2017

*** 102,111 ****
--- 102,112 ----
                                                            =  { NULL /*, NULL...*/ };
  
  InstanceKlass*      SystemDictionary::_box_klasses[T_VOID+1]      =  { NULL /*, NULL...*/ };
  
  oop         SystemDictionary::_java_system_loader         =  NULL;
+ oop         SystemDictionary::_java_platform_loader       =  NULL;
  
  bool        SystemDictionary::_has_loadClassInternal      =  false;
  bool        SystemDictionary::_has_checkPackageAccess     =  false;
  
  // lazily initialized klass variables

*** 115,144 ****
--- 116,159 ----
  
  const int defaultProtectionDomainCacheSize = 1009;
  
  
  // ----------------------------------------------------------------------------
! // Java-level SystemLoader and PlatformLoader
  
  oop SystemDictionary::java_system_loader() {
    return _java_system_loader;
  }
  
  void SystemDictionary::compute_java_system_loader(TRAPS) {
    Klass* system_klass = WK_KLASS(ClassLoader_klass);
    JavaValue result(T_OBJECT);
    JavaCalls::call_static(&result,
!                          WK_KLASS(ClassLoader_klass),
!                          SystemDictionary::ClassLoader_klass(),
                           vmSymbols::getSystemClassLoader_name(),
                           vmSymbols::void_classloader_signature(),
                           CHECK);
  
    _java_system_loader = (oop)result.get_jobject();
  
    CDS_ONLY(SystemDictionaryShared::initialize(CHECK);)
  }
  
+ oop SystemDictionary::java_platform_loader() {
+   return _java_platform_loader;
+ }
+ 
+ void SystemDictionary::compute_java_platform_loader(TRAPS) {
+   JavaValue result(T_OBJECT);
+   JavaCalls::call_static(&result,
+                          SystemDictionary::ClassLoader_klass(),
+                          vmSymbols::getPlatformClassLoader_name(),
+                          vmSymbols::void_classloader_signature(),
+                          CHECK);
+ 
+   _java_platform_loader = (oop)result.get_jobject();
+ }
+ 
  
  ClassLoaderData* SystemDictionary::register_loader(Handle class_loader, TRAPS) {
    if (class_loader() == NULL) return ClassLoaderData::the_null_class_loader_data();
    return ClassLoaderDataGraph::find_or_create(class_loader, THREAD);
  }

*** 166,185 ****
--- 181,199 ----
  // specified via -Djava.system.class.loader.
  bool SystemDictionary::is_system_class_loader(oop class_loader) {
    if (class_loader == NULL) {
      return false;
    }
!   return (class_loader->klass() == SystemDictionary::jdk_internal_loader_ClassLoaders_AppClassLoader_klass() ||
            class_loader == _java_system_loader);
!   return (class_loader == _java_system_loader);
  }
  
  // Returns true if the passed class loader is the platform class loader.
  bool SystemDictionary::is_platform_class_loader(oop class_loader) {
    if (class_loader == NULL) {
      return false;
    }
!   return (class_loader->klass() == SystemDictionary::jdk_internal_loader_ClassLoaders_PlatformClassLoader_klass());
!   return (class_loader == _java_platform_loader);
  }
  
  // ----------------------------------------------------------------------------
  // Resolving of classes
  

*** 1938,1947 ****
--- 1952,1962 ----
    return unloading_occurred;
  }
  
  void SystemDictionary::roots_oops_do(OopClosure* strong, OopClosure* weak) {
    strong->do_oop(&_java_system_loader);
+   strong->do_oop(&_java_platform_loader);
    strong->do_oop(&_system_loader_lock_obj);
    CDS_ONLY(SystemDictionaryShared::roots_oops_do(strong);)
  
    // Do strong roots marking if the closures are the same.
    if (strong == weak || !ClassUnloading) {

*** 1962,1971 ****
--- 1977,1987 ----
    }
  }
  
  void SystemDictionary::oops_do(OopClosure* f) {
    f->do_oop(&_java_system_loader);
+   f->do_oop(&_java_platform_loader);
    f->do_oop(&_system_loader_lock_obj);
    CDS_ONLY(SystemDictionaryShared::oops_do(f);)
  
    // Only the protection domain oops contain references into the heap. Iterate
    // over all of them.