--- /dev/null	2018-04-03 12:55:20.301839954 +0200
+++ new/src/hotspot/share/gc/z/zFuture.inline.hpp	2018-06-06 00:41:50.267548070 +0200
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2015, 2017, 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_GC_Z_ZFUTURE_INLINE_HPP
+#define SHARE_GC_Z_ZFUTURE_INLINE_HPP
+
+#include "gc/z/zFuture.hpp"
+#include "runtime/interfaceSupport.inline.hpp"
+#include "runtime/semaphore.inline.hpp"
+#include "runtime/thread.hpp"
+
+template <typename T>
+inline void ZFuture<T>::set(T value) {
+  // Set value
+  _value = value;
+
+  // Notify waiter
+  _sema.signal();
+}
+
+template <typename T>
+inline T ZFuture<T>::get() {
+  // Wait for notification
+  Thread* const thread = Thread::current();
+  if (thread->is_Java_thread()) {
+    _sema.wait_with_safepoint_check((JavaThread*)thread);
+  } else {
+    _sema.wait();
+  }
+
+  // Return value
+  return _value;
+}
+
+#endif // SHARE_GC_Z_ZFUTURE_INLINE_HPP