src/share/vm/classfile/javaClasses.hpp

rev 5952 : 8029075: String deduplication in G1
Summary: Implementation of JEP 192, http://openjdk.java.net/jeps/192
Reviewed-by: brutisso, tschatzl, coleenp

*** 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.
--- 1,7 ----
  /*
!  * Copyright (c) 1997, 2014, 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.
*** 59,72 ****
  
    static bool initialized;
  
    static Handle basic_create(int length, TRAPS);
  
-   static void set_value( oop string, typeArrayOop buffer) {
-     assert(initialized, "Must be initialized");
-     string->obj_field_put(value_offset,  (oop)buffer);
-   }
    static void set_offset(oop string, int offset) {
      assert(initialized, "Must be initialized");
      if (offset_offset > 0) {
        string->int_field_put(offset_offset, offset);
      }
--- 59,68 ----
*** 120,135 ****
--- 116,145 ----
    static int hash_offset_in_bytes()   {
      assert(initialized && (hash_offset > 0), "Must be initialized");
      return hash_offset;
    }
  
+   static void set_value(oop string, typeArrayOop buffer) {
+     assert(initialized && (value_offset > 0), "Must be initialized");
+     string->obj_field_put(value_offset, (oop)buffer);
+   }
+   static void set_hash(oop string, unsigned int hash) {
+     assert(initialized && (hash_offset > 0), "Must be initialized");
+     string->int_field_put(hash_offset, hash);
+   }
+ 
    // Accessors
    static typeArrayOop value(oop java_string) {
      assert(initialized && (value_offset > 0), "Must be initialized");
      assert(is_instance(java_string), "must be java_string");
      return (typeArrayOop) java_string->obj_field(value_offset);
    }
+   static unsigned int hash(oop java_string) {
+     assert(initialized && (hash_offset > 0), "Must be initialized");
+     assert(is_instance(java_string), "must be java_string");
+     return java_string->int_field(hash_offset);
+   }
    static int offset(oop java_string) {
      assert(initialized, "Must be initialized");
      assert(is_instance(java_string), "must be java_string");
      if (offset_offset > 0) {
        return java_string->int_field(offset_offset);