1 /*
   2  * Copyright (c) 2019, 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 #ifndef OS_WINDOWS_GC_Z_ZSYSCALL_WINDOWS_HPP
  25 #define OS_WINDOWS_GC_Z_ZSYSCALL_WINDOWS_HPP
  26 
  27 #include "utilities/globalDefinitions.hpp"
  28 
  29 #include <Windows.h>
  30 #include <Memoryapi.h>
  31 
  32 class ZSyscall {
  33 private:
  34   typedef HANDLE (*CreateFileMappingWFn)(HANDLE, LPSECURITY_ATTRIBUTES, DWORD, DWORD, DWORD, LPCWSTR);
  35   typedef PVOID (*VirtualAlloc2Fn)(HANDLE, PVOID, SIZE_T, ULONG, ULONG, MEM_EXTENDED_PARAMETER*, ULONG);
  36   typedef BOOL (*VirtualFreeExFn)(HANDLE, LPVOID, SIZE_T, DWORD);
  37   typedef PVOID (*MapViewOfFile3Fn)(HANDLE, HANDLE, PVOID, ULONG64, SIZE_T, ULONG, ULONG, MEM_EXTENDED_PARAMETER*, ULONG);
  38   typedef BOOL (*UnmapViewOfFile2Fn)(HANDLE, PVOID, ULONG);
  39 
  40 public:
  41   static CreateFileMappingWFn CreateFileMappingW;
  42   static VirtualAlloc2Fn      VirtualAlloc2;
  43   static VirtualFreeExFn      VirtualFreeEx;
  44   static MapViewOfFile3Fn     MapViewOfFile3;
  45   static UnmapViewOfFile2Fn   UnmapViewOfFile2;
  46 
  47   static void initialize();
  48 
  49   static bool is_os_supported();
  50 };
  51 
  52 #endif // OS_WINDOWS_GC_Z_ZSYSCALL_WINDOWS_HPP