RFR 8215699: -Xlog::file cannot be used with named pipe

[Lois Foltan]

Looks good Harold!
Lois

On 1/8/2019 10:08 AM, Harold David Seigel wrote:
> Hi,
>
> Please review this fix for JDK-8215699.  The fix sets the default 
> logging file count to zero if the log file is a named pipe.  This 
> prevents the logging code from complaining about trying to do log file 
> rotation with a non-regular file.
>
> Open Webrev: 
> http://cr.openjdk.java.net/~hseigel/bug_8215699/webrev/index.html
>
> JBS Bug:  https://bugs.openjdk.java.net/browse/JDK-8215699
>
> The fix was tested by hand on both Linux-x64 and Mac OS X. Logging to 
> a named pipe worked when no filecount was specified and when 
> filecount=0 was specified.
>
> The fix was regression tested by running Mach5 tiers 1 and 2 tests and 
> builds on Linux-x64, Windows, and Mac OS X, Mach5 tiers 3 -5 on 
> Linux-x64, and by running JCK-12 Lang and VM tests on Linux-x64.
>
> Thanks, Harold
>