RFR(S): 8217345: [TESTBUG] JFR TestShutdownEvent fails due to improper use of Unsafe

[Erik Gahlin]

Looks good. Thanks for fixing.

Erik

> On 22 Jan 2019, at 22:37, mikhailo.seledtsov at oracle.com wrote:
> 
> Summary of the problem:
>   - root cause is the improper use of Unsafe
>   - the problem did not manifest when simply running the test; if test is ran with an option "--limit-modules=java.base,jdk.jfr" then it fails
> 
> Solution:
>   updated to correctly use Unsafe: http://cr.openjdk.java.net/~mseledtsov/8217345.00/
>      - using jdk.internal.misc.Unsafe instead of sun.misc.unsafe
>      - using "--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED" for child process
> 
> 
> JBS: https://bugs.openjdk.java.net/browse/JDK-8217345
> Webrev: http://cr.openjdk.java.net/~mseledtsov/8217345.00/
> Testing:
>     tested with and w/o  "--limit-modules=java.base,jdk.jfr" multiple times on Linux-x64, Mac, Win-x64 and Solaris-Sparc
> 
> 
> Thank you,
> Misha
>