JDK-8213914 : [TESTBUG] Several JFR VM events are not covered by tests
  • Type: Bug
  • Component: hotspot
  • Sub-Component: jfr
  • Affected Version: 12
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2018-11-15
  • Updated: 2020-04-27
  • Resolved: 2018-11-27
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JDK 12 Other
12 b22Fixed openjdk8u262Fixed
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Description
After examination of the latest sources and tests for JFR, we have discovered that several JFR VM events are not covered by tests. 

Namely: 
=========
SafepointStateSyncronization 
CompilerConfiguration
EvacuationInformation
GCPhasePauseLevel4
GCPhaseConcurrent
=========
Shutdown
DumpReason


This bug will address first 5 events via a collection of minor fixes. The last 2 events require more substantial work, separate bugs will are filed for these tasks:
        8213917: [TESTBUG] Shutdown JFR event is not covered by test
        8213918: [TESTBUG] DumpReason JFR event is not covered by test
Comments
Replacing jdk8u-fix-request with link to JDK-8239140
17-02-2020

RFC: https://mail.openjdk.java.net/pipermail/jdk8u-dev/2020-January/011063.html
30-01-2020

Updated webrev based on feedback from Erik and Markus: http://cr.openjdk.java.net/~mseledtsov/8213914.01/
16-11-2018

WebRev: http://cr.openjdk.java.net/~mseledtsov/8213914.00/index.html (recommend Udiff for viewing this webrev) Testing: running all JFR tests under: open/test/jdk/jdk/jfr/ (In progress)
15-11-2018