https://github.com/kant2002/zerogc

https://github.com/kant2002/zerogc

Last synced: 11 months ago
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• Host: GitHub
• URL: https://github.com/kant2002/zerogc
• Owner: kant2002
• Created: 2020-06-09T07:36:57.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2021-04-01T12:26:53.000Z (over 5 years ago)
• Last Synced: 2024-10-11T20:30:52.570Z (almost 2 years ago)
• Language: C#
• Size: 27.3 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
ZeroGC in C#

============

This is fun prototype for ZeroGC written in C#.

    dotnet publish ZeroGC\ZeroGC.csproj -c Release -r win-x64

    dotnet publish TestApp\TestApp.csproj -c Release -r win-x64

Now in separate Powershell session

    # Important to keep paths relative, since they are prepended to app folder.

    $env:COMPlus_GCName="..\..\..\..\..\..\ZeroGC\bin\Release\net5.0\win-x64\publish\ZeroGC.dll"

    cd TestApp\bin\Release\net5.0\win-x64\publish

    .\TestApp.exe

Debugging of the Custom GC loading process. Build Debug version of Runtime.

    $env:COMPLUS_LogEnable=1

    $env:COMPLUS_LOGLEVEL=6

    $env:COMPLUS_LogToFile=1

    $env:COMPLUS_LogFile=out.txt

Current problems

- If run under normal NativeAOT and `COMPlus_GCName` set, following process happens

    * Loaded CoreCLR

    * Loaded ZeroGC

    * Executed GC_VersionInfo

    * Inside GC_VersionInfo executed RhpReversePInvoke2 which trigger runtime initialization

    * During runtime initialization executed `GC_Initialize` defined in this library because it is linked instead of normal GC

    * `GC_Initialize` also has `RhpReversePInvoke2` call inside, so it's cycled.

- If run using mini-runtime version following compilation/dependencies problems happens:

    * Application cannot be compiled with existing bootstrapping methodologies.

    * Export does not produced if mini-runtime embedded into DLL project. Need separate mini-runtime.

    * `_DllMainCRTStartup` and `CoreRT_StaticInitialization` required to get rid of bootstrapperdll.lib which take all runtime into application.