C# 开启大地址内存以应对32位机器内存不够用问题

作者：炊文伟
邮箱：chuiwenwei@163.com
专注于以安全为核心的平安城市，智能交通，智能家居软件平台解决方案设计与开发

概述：
在目前很多机器都使用8G内存情况下，很多软件却无法有效使用更高内存，本文主要简述使用C#语言开发的应用程序，使用系统自带的Editbin工具开启3G大内存使用。

详细步骤(以VS2015举例)：

[align=left]第一步：找到editbin.exe文件[/align]

格式：VS版本\VC\bin\editbin.exe
以我机器为例其位于VS软件安装目录下：C:\Program
Files (x86)\MicrosoftVisual Studio 14.0\VC\bin\editbin.exe



 

[align=left]第二步：执行开启大地址命令[/align]

命令格式：/largeaddressaware  exe文件路径
以我机器下一个WindowsFormsApplication1程序(.Net4.0)为例：
/largeaddressaware  C:\Users\chuiwenwei\Desktop\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe

命令行中运行如下：
C:\ProgramFiles (x86)\Microsoft Visual Studio 14.0\VC\bin>editbin /largeaddressawareC:\Users\chuiwenwei\Desktop\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe
 

[align=left]第三步：运行后如下所示：[/align]

C:\ProgramFiles (x86)\Microsoft Visual Studio 14.0\VC\bin>editbin /largeaddressawareC:\Users\chuiwenwei\Desktop\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe
Microsoft(R) COFF/PE Editor Version 14.00.23026.0
Copyright(C) Microsoft Corporation.  All rightsreserved.
 

[align=left]第四步：验证是否确实开启了大地址[/align]

在editbin.exe文件上方可以看到dumbin.exe文件。
命令格式：/headersexe文件路径
以我机器下刚才设置的WindowsFormsApplication1程序(.Net4.0)为例：
C:\ProgramFiles (x86)\Microsoft Visual Studio 14.0\VC\bin>dumpbin /headersC:\Users\chuiwenwei\Desktop\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe
 

[align=left]第五步：显示如下信息即可确认获取信息成功[/align]

C:\ProgramFiles (x86)\Microsoft Visual Studio 14.0\VC\bin>dumpbin /headersC:\Users\chuiwenwei\Desktop\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe
Microsoft(R) COFF/PE Dumper Version 14.00.23026.0
Copyright(C) Microsoft Corporation.  All rightsreserved.
 
 
Dump offileC:\Users\chuiwenwei\Desktop\WindowsFormsApplication1\WindowsFormsApplication1\bin\Debug\WindowsFormsApplication1.exe
 
PEsignature found
 
FileType: EXECUTABLE IMAGE
 
FILEHEADER VALUES
             14C machine (x86)
               3 number of sections
        56E7F29F time date stamp Tue Mar 1519:31:43 2016
               0 file pointer to symbol table
               0 number of symbols
              E0 size of optional header
              22 characteristics
                   Executable
                   Application can handle large(>2GB) addresses
 
OPTIONALHEADER VALUES
             10B magic # (PE32)
           48.00 linker version
            1200 size of code
             A00 size of initialized data
              0 size of uninitialized data
            3002 entry point (00403002)
            2000 base of code
            4000 base of data
          400000 image base (00400000 to00407FFF)
            2000 section alignment
             200 file alignment
            4.00 operating system version
            0.00 image version
            4.00 subsystem version
               0 Win32 version
            8000 size of image
             200 size of headers
            1E14 checksum
               2 subsystem (Windows GUI)
            8540 DLL characteristics
                   Dynamic base
                   NX compatible
                   No structured exceptionhandler
                   Terminal Server Aware
          100000 size of stack reserve
            1000 size of stack commit
          100000 size of heap reserve
            1000 size of heap commit
               0 loader flags
              10 number of directories
               0 [       0] RVA [size] of Export Directory
            2FAD [      4F] RVA [size] of Import Directory
            4000 [     62C] RVA [size] of Resource Directory
               0 [       0] RVA [size] of Exception Directory
               0 [       0] RVA [size] of Certificates Directory
            6000 [       C]RVA [size] of Base Relocation Directory
            2F04 [      1C] RVA [size] of Debug Directory
               0 [       0] RVA [size] of Architecture Directory
               0 [       0] RVA [size] of Global PointerDirectory
               0 [       0]RVA [size] of Thread Storage Directory
               0 [       0] RVA [size] of Load ConfigurationDirectory
               0 [       0] RVA [size] of Bound Import Directory
            2000 [       8] RVA [size] of Import Address TableDirectory
               0 [       0] RVA [size] of Delay Import Directory
            2008 [      48] RVA [size] of COM DescriptorDirectory
               0 [       0] RVA [size] of Reserved Directory
 
 
SECTIONHEADER #1
   .text name
    1008 virtual size
    2000 virtual address (00402000 to 00403007)
    1200 size of raw data
     200 file pointer to raw data (00000200 to000013FF)
       0 file pointer to relocation table
       0 file pointer to line numbers
       0 number of relocations
       0 number of line numbers
60000020flags
         Code
         Execute Read
 
  Debug Directories
 
        Time Type        Size      RVA Pointer
    -------- ------- -------- -------- --------
    56E7F29E cv            8D 00002F20     1120   Format: RSDS, {D72A86FA-9265-4A90-9885-AEED19611EC0}, 1,C:\Users\chuiwenwei\Desktop\WindowsFormsApplication1\WindowsFormsApplication1\obj\Debug\WindowsFormsApplication1.pdb
 
SECTIONHEADER #2
   .rsrc name
     62C virtual size
    4000 virtual address (00404000 to 0040462B)
     800 size of raw data
    1400 file pointer to raw data (00001400 to00001BFF)
       0 file pointer to relocation table
       0 file pointer to line numbers
       0 number of relocations
       0 number of line numbers
40000040flags
         Initialized Data
         Read Only
 
SECTIONHEADER #3
  .reloc name
       C virtual size
    6000 virtual address (00406000 to 0040600B)
     200 size of raw data
    1C00 file pointer to raw data (00001C00 to00001DFF)
       0 file pointer to relocation table
       0 file pointer to line numbers
       0 number of relocations
       0 number of line numbers
42000040flags
         Initialized Data
         Discardable
         Read Only
 
  Summary
 
        2000 .reloc
        2000 .rsrc
        2000 .text
 

[align=left]第六步：如果可以Application can handle large (>2GB)addresses就说明设置大地址成功[/align]