/*

 * Copyright (c) 2018, 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 OS_WINDOWS_IPHLP_INTERFACE_HPP

#define OS_WINDOWS_IPHLP_INTERFACE_HPP

#include "memory/allocation.hpp"

#include "utilities/macros.hpp"

#include <WinSock2.h>

#include <ws2ipdef.h>

#include <iphlpapi.h>

class IphlpDll : public AllStatic {

 private:

  static LONG       _iphlp_reference_count;

  static LONG       _critical_section;

  static LONG       _initialized;

  static HMODULE    _hModule;

  static void       initialize(void);

  static DWORD(WINAPI *_GetIfTable2)(PMIB_IF_TABLE2*);

  static DWORD(WINAPI *_FreeMibTable)(PVOID);

 public:

  static DWORD GetIfTable2(PMIB_IF_TABLE2*);

  static DWORD FreeMibTable(PVOID);

  static bool       IphlpAttach(void);

  static bool       IphlpDetach(void);

};

#endif // OS_WINDOWS_IPHLP_INTERFACE_HPP