src/share/vm/classfile/javaClasses.cpp

*** 1,7 ****
  /*
!  * Copyright (c) 1997, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 1997, 2013, 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.
*** 2784,2793 ****
--- 2784,2794 ----
  // Support for java_lang_ClassLoader
  
  bool java_lang_ClassLoader::offsets_computed = false;
  int  java_lang_ClassLoader::_loader_data_offset = -1;
  int  java_lang_ClassLoader::parallelCapable_offset = -1;
+ int  java_lang_ClassLoader::fullyConcurrent_offset = -1;
  
  ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
      assert(loader != NULL && loader->is_oop(), "loader must be oop");
      return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
  }
*** 2803,2812 ****
--- 2804,2817 ----
    // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
    Klass* k1 = SystemDictionary::ClassLoader_klass();
    compute_optional_offset(parallelCapable_offset,
      k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
  
+   // The field indicating fullyConcurrent is only present starting in 8
+   compute_optional_offset(fullyConcurrent_offset,
+     k1, vmSymbols::fullyConcurrent_name(), vmSymbols::bool_signature());
+ 
    CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
  }
  
  oop java_lang_ClassLoader::parent(oop loader) {
    assert(is_instance(loader), "loader must be oop");
*** 2840,2849 ****
--- 2845,2865 ----
       return false;
    }
    return (class_loader->obj_field(parallelCapable_offset) != NULL);
  }
  
+ // For class loader classes, fullyConcurrent defined as boolean field
+ // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
+ bool java_lang_ClassLoader::fullyConcurrent(oop class_loader) {
+   if (!JDK_Version::is_gte_jdk18x_version()
+      || fullyConcurrent_offset == -1) {
+      // Default for backward compatibility is false
+      return false;
+   }
+   return (class_loader->bool_field(fullyConcurrent_offset) == 1);
+ }
+ 
  bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
    // Fix for 4474172; see evaluation for more details
    loader = non_reflection_class_loader(loader);
  
    oop cl = SystemDictionary::java_system_loader();