1 /*
   2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef OS_WINDOWS_VM_IPHLP_INTERFACE_HPP
  26 #define OS_WINDOWS_VM_IPHLP_INTERFACE_HPP
  27 
  28 #include <WinSock2.h>
  29 #include "memory/allocation.hpp"
  30 #include "utilities/macros.hpp"
  31 #include <ws2ipdef.h>
  32 #include <iphlpapi.h>
  33 
  34 class IphlpDll : public AllStatic {
  35  private:
  36   static LONG       _iphlp_reference_count;
  37   static LONG       _critical_section;
  38   static LONG       _initialized;
  39   static HMODULE    _hModule;
  40   static void       initialize(void);
  41   static DWORD(WINAPI *_GetIfTable2)(PMIB_IF_TABLE2*);
  42   static DWORD(WINAPI *_FreeMibTable)(PVOID);
  43 
  44  public:
  45   static DWORD GetIfTable2(PMIB_IF_TABLE2*);
  46   static DWORD FreeMibTable(PVOID);
  47   static bool       IphlpAttach(void);
  48   static bool       IphlpDetach(void);
  49 };
  50 
  51 #endif // OS_WINDOWS_VM_IPHLP_INTERFACE_HPP