--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/oops/compiledICHolderOop.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,56 @@
+/*
+ * Copyright 1998-2004 Sun Microsystems, Inc.  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.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// A compiledICHolderOop is a helper object for the inline cache implementation.
+// It holds an intermediate value (method+klass pair) used when converting from
+// compiled to an interpreted call.
+//
+// compiledICHolderOops are always allocated permanent (to avoid traversing the
+// codeCache during scavenge).
+
+
+class compiledICHolderOopDesc : public oopDesc {
+  friend class VMStructs;
+ private:
+  methodOop _holder_method;
+  klassOop  _holder_klass;    // to avoid name conflict with oopDesc::_klass
+ public:
+  // accessors
+  methodOop holder_method() const     { return _holder_method; }
+  klassOop  holder_klass()  const     { return _holder_klass; }
+
+  void set_holder_method(methodOop m) { oop_store_without_check((oop*)&_holder_method, (oop)m); }
+  void set_holder_klass(klassOop k)   { oop_store_without_check((oop*)&_holder_klass, (oop)k); }
+
+  static int header_size()            { return sizeof(compiledICHolderOopDesc)/HeapWordSize; }
+  static int object_size()            { return align_object_size(header_size()); }
+
+  // interpreter support (offsets in bytes)
+  static int holder_method_offset()   { return offset_of(compiledICHolderOopDesc, _holder_method); }
+  static int holder_klass_offset()    { return offset_of(compiledICHolderOopDesc, _holder_klass); }
+
+  // GC support
+  oop* adr_holder_method() const      { return (oop*)&_holder_method; }
+  oop* adr_holder_klass() const       { return (oop*)&_holder_klass; }
+};