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

[mikhailo.seledtsov at oracle.com]

Thank you for review,

Misha


On 1/23/19 10:00 AM, Erik Gahlin wrote:
> 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
>>