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  • 【.NET进程通信】初探.NET中进程间通信的简单的实现

    转载请注明出处:http://blog.csdn.net/xiaoy_h/article/details/26090277

    废话不多说,IPC就是进程间通信。

    进程间通信能够採用的方法非常多,比方创建port后採用组播技术进行握手连接,这里要讲到的就是通过内存文件映射的方法实现。

    先在项目中加入相关API函数:

            [DllImport("kernel32.dll", EntryPoint = "OpenFileMapping", SetLastError = true, CharSet = CharSet.Auto)]
            private static extern IntPtr OpenFileMapping(uint dwDesiredAccess, bool bInheritHandle, String lpName);
            [DllImport("Kernel32.dll")]
            private static extern IntPtr MapViewOfFile(IntPtr hFileMappingObject, uint dwDesiredAccess, uint dwFileOffsetHigh, uint dwFileOffsetLow, uint dwNumberOfBytesToMap);
            [DllImport("Kernel32.dll", EntryPoint = "UnmapViewOfFile", SetLastError = true, CharSet = CharSet.Auto)]
            private static extern bool UnmapViewOfFile(IntPtr lpBaseAddress);
            [DllImport("kernel32.dll", EntryPoint = "CloseHandle", SetLastError = true, CharSet = CharSet.Auto)]
            private static extern bool CloseHandle(IntPtr hHandle);
            [DllImport("Kernel32.dll", EntryPoint = "CreateFileMapping", SetLastError = true, CharSet = CharSet.Auto)]
            private static extern IntPtr CreateFileMapping(uint hFile, IntPtr lpAttributes, uint flProtect, uint dwMaximumSizeHigh, uint dwMaximumSizeLow, string lpName);
            
    然后在共享端加入代码:

                string shareName = "XiaoY_H的内存共享";
                char[] myShrCntnt="共享内存passwordFuck985211".ToCharArray();
                IntPtr hMapFile = CreateFileMapping(INVALID_HANDLE_VALUE, IntPtr.Zero, PAGE_READWRITE, 0, 256, shareName);
                IntPtr pBuf = MapViewOfFile(hMapFile, FILE_MAP_ALL_ACCESS, 0, 0, 256);
                Marshal.Copy(myShrCntnt, 0, pBuf, myShrCntnt.Length);
                
                Console.WriteLine("共享内存建立完成,它就在这儿:IntPtr->{0:G}",pBuf.ToInt32());
                Console.ReadKey();
                UnmapViewOfFile(pBuf);
                CloseHandle(hMapFile);                   
    在被共享端加入代码:

                string shareName = "XiaoY_H的内存共享";
                IntPtr hMapFile = OpenFileMapping(FILE_MAP_ALL_ACCESS, false, shareName);
                if (hMapFile==IntPtr.Zero)
                {
                    Console.WriteLine("Null MapFile!");
                    return;
                }
                IntPtr pBuf = MapViewOfFile(hMapFile, FILE_MAP_ALL_ACCESS, 0, 0, 256);
                if (pBuf==IntPtr.Zero)
                {
                    Console.WriteLine("Null Buffer!");
                    return;
                }
                Console.WriteLine("共享内存数据:" + Marshal.PtrToStringUni(pBuf));
                Console.ReadKey();
                UnmapViewOfFile(pBuf);
                CloseHandle(hMapFile);        




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  • 原文地址:https://www.cnblogs.com/mengfanrong/p/4020504.html
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