[PATCH] Enable jtreg tests to run on WSL (Windows Subsystem for Linux)

[Andrew Luo]

Hi Jon,

For a general intro to WSL, see here: 

https://blogs.msdn.microsoft.com/wsl/2016/04/22/windows-subsystem-for-linux-overview/
https://docs.microsoft.com/en-us/windows/wsl/faq

These links might also be useful for reviewing these changes specifically:

https://docs.microsoft.com/en-us/windows/wsl/interop
https://blogs.msdn.microsoft.com/commandline/2017/12/22/share-environment-vars-between-wsl-and-windows/

Thanks,

-Andrew

-----Original Message-----
From: Jonathan Gibbons <jonathan.gibbons at oracle.com> 
Sent: Monday, January 7, 2019 7:54 AM
To: Andrew Luo <andrewluotechnologies at outlook.com>; code-tools-dev at openjdk.java.net
Subject: Re: [PATCH] Enable jtreg tests to run on WSL (Windows Subsystem for Linux)

Andrew,

I've been generally following the progress for supporting WSL, but now that I need to get more involved, (i.e. reviewing jtreg updates) can you point me at any reasonable general introductory material for WSL?

-- Jon

On 1/6/19 11:29 AM, Andrew Luo wrote:
> We recently added support for building OpenJDK on WSL (targeting 
> Windows; targeting Linux always worked).  However, running tests on 
> WSL did not work, and we determined that some changes would be needed 
> to jtreg to support this use case.  In particular, jtreg needs to know 
> if it is running on WSL targeting Windows or WSL targeting Linux (when 
> targeting Linux, no changes are needed as it is the same as any other 
> Linux system, but when targeting Windows jtreg needs to run shell 
> scripts in a special manner - in particular, calling "wsl.exe sh" 
> instead of just "sh" since it's a Windows boot JDK, as well as 
> translating environment variables using WSLENV...)
>
> I've attached my patch with my proposed changes.  I welcome any thoughts/feedback.
>
> (See https://bugs.openjdk.java.net/browse/JDK-8215445 for more details 
> about supporting WSL for building OpenJDK)
>
> Thanks,
>
> -Andrew