--- /dev/null	2019-02-13 16:01:02.292000000 +0300
+++ new/src/os/windows/vm/semaphore_windows.hpp	2019-02-15 19:02:56.338173071 +0300
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2015, 2018, 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 OS_WINDOWS_VM_SEMAPHORE_WINDOWS_HPP
+#define OS_WINDOWS_VM_SEMAPHORE_WINDOWS_HPP
+
+#include "memory/allocation.hpp"
+
+#include <windows.h>
+
+class WindowsSemaphore : public CHeapObj<mtInternal> {
+  HANDLE _semaphore;
+
+  // Prevent copying and assignment.
+  WindowsSemaphore(const WindowsSemaphore&);
+  WindowsSemaphore& operator=(const WindowsSemaphore&);
+
+ public:
+  WindowsSemaphore(uint value = 0);
+  ~WindowsSemaphore();
+
+  void signal(uint count = 1);
+
+  void wait();
+
+  bool trywait();
+};
+
+typedef WindowsSemaphore SemaphoreImpl;
+
+#endif // OS_WINDOWS_VM_SEMAPHORE_WINDOWS_HPP