--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/jvmci/jvmciObject.hpp	Wed May 01 12:31:29 2019 -0700
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2019, 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.
+ *
+ * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#ifndef SHARE_JVMCI_JVMCIOBJECT_HPP
+#define SHARE_JVMCI_JVMCIOBJECT_HPP
+
+#include "jni.h"
+#include "utilities/debug.hpp"
+
+class JVMCIArray;
+class JVMCIPrimitiveArray;
+class JVMCIObjectArray;
+
+class JVMCIObject {
+
+ private:
+  jobject _object;
+  bool _is_hotspot;
+
+ public:
+  JVMCIObject(): _object(NULL), _is_hotspot(false) {}
+  JVMCIObject(jobject o, bool is_hotspot): _object(o), _is_hotspot(is_hotspot) { }
+
+  static JVMCIObject create(jobject o, bool is_hotspot) { JVMCIObject r(o, is_hotspot); return r; }
+  jobject as_jobject() { return _object; }
+  jobject as_jweak()   { return (jweak) _object; }
+  jstring as_jstring() { return (jstring) _object; }
+  bool is_hotspot() { return _is_hotspot; }
+
+  bool is_null() const { return _object == NULL; }
+  bool is_non_null() const { return _object != NULL; }
+
+  operator JVMCIArray();
+  operator JVMCIPrimitiveArray();
+  operator JVMCIObjectArray();
+};
+
+class JVMCIArray : public JVMCIObject {
+ public:
+  JVMCIArray() {}
+  JVMCIArray(jobject o, bool is_hotspot): JVMCIObject(o, is_hotspot) {}
+  jarray as_jobject() { return (jarray) JVMCIObject::as_jobject(); }
+};
+
+class JVMCIObjectArray : public JVMCIArray {
+ public:
+  JVMCIObjectArray() {}
+  JVMCIObjectArray(void* v): JVMCIArray() { assert(v == NULL, "must be NULL"); }
+  JVMCIObjectArray(jobject o, bool is_hotspot): JVMCIArray(o, is_hotspot) {}
+
+  jobjectArray as_jobject() { return (jobjectArray) JVMCIArray::as_jobject(); }
+};
+
+class JVMCIPrimitiveArray : public JVMCIArray {
+ public:
+  JVMCIPrimitiveArray() {}
+  JVMCIPrimitiveArray(void* v): JVMCIArray() { assert(v == NULL, "must be NULL"); }
+  JVMCIPrimitiveArray(jobject o, bool is_hotspot): JVMCIArray(o, is_hotspot) {}
+
+  jbooleanArray as_jbooleanArray() { return (jbooleanArray) as_jobject(); }
+  jbyteArray    as_jbyteArray()    { return (jbyteArray) as_jobject();    }
+  jcharArray    as_jcharArray()    { return (jcharArray) as_jobject();    }
+  jshortArray   as_jshortArray()   { return (jshortArray) as_jobject();   }
+  jintArray     as_jintArray()     { return (jintArray) as_jobject();     }
+  jfloatArray   as_jfloatArray()   { return (jfloatArray) as_jobject();   }
+  jlongArray    as_jlongArray()    { return (jlongArray) as_jobject();    }
+  jdoubleArray  as_jdoubleArray()  { return (jdoubleArray) as_jobject();  }
+};
+
+inline JVMCIObject::operator JVMCIArray() { return JVMCIArray(_object, _is_hotspot); }
+inline JVMCIObject::operator JVMCIPrimitiveArray() { return JVMCIPrimitiveArray(_object, _is_hotspot); }
+inline JVMCIObject::operator JVMCIObjectArray() { return JVMCIObjectArray(_object, _is_hotspot); }
+
+#endif // SHARE_JVMCI_JVMCIOBJECT_HPP