D开发者_C百科oes anyone know an Open Source implementation in C# using Shared Memory pre. .NET 4.0 (where we don't have the Memory Mapped file implementations.
Preferably using id indexes.
[DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)]
public static extern IntPtr CreateFileMapping(
IntPtr hFile,
IntPtr lpFileMappingAttributes,
FileMapProtection flProtect,
uint dwMaximumSizeHigh,
uint dwMaximumSizeLow,
[MarshalAs(UnmanagedType.LPTStr)] string lpName);
See here for more information
http://www.pinvoke.net/default.aspx/kernel32.createfilemapping
and
http://msdn.microsoft.com/en-us/library/aa366551(v=vs.85).aspx
The C# Cookbook contains an implementation of SharedMemoryManager that you can view here: http://csharp.codefetch.com/example/p1/MutexFun/SharedMemoryManager.cs
Enterprise Library has a Caching Application Block. See here: Microsoft Enterprise Library 5.0 – April 2010 for the latest version (.NET 3.5 and .NET 4). Older versions also have this caching application block if you have lower requirements.
You have couple of choices.
- Memory mapped files - Working with memory mapped files in .NET 4
- IPC or RPC - Take a look at this examples
- DCOM - Distributed Component Object Model
- Native DLL - How do I share data in my DLL with an application or with other DLLs?
- Your own data sharing/caching windows service based on TCP/IP (Socket server) - WCF
I would choose memory mapped files as you will get much better performances. Everything depends on what you are trying to achieve. Take a look at .NET Framework 4.0. implementation of System.IO.MemoryMappedFile.
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