RFR: JDK-8227124: "could not open pipe" error does not report error details

[serguei.spitsyn at oracle.com]

Hi Alex,

It looks good to me.
It is nice to have this extra information about failures.

Thanks,
Serguei

On 7/3/19 1:59 PM, Alex Menkov wrote:
> Hi all,
>
> Please review a fix for
> https://bugs.openjdk.java.net/browse/JDK-8227124
>
> This is subtask of JDK-8221512: Failed to complete jcmd operation 
> '[error][attach] could not open pipe \\.\pipe\javatool-708501419 to 
> send result of operation jcmd'
>
> To fix issues with "could  not open pipe" error, additional info is 
> required, the change adds logging of system error.
>
> webrev:
> http://cr.openjdk.java.net/~amenkov/jdk14/openPipeErrorLog/webrev/
>
> --alex