JDK-8141394 : Remove the instrumentation added by JDK-6898948
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 9
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2015-11-04
  • Updated: 2015-11-29
  • Resolved: 2015-11-05
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JDK 9
9 b94Fixed
Related Reports
Relates :  
JDK-6898948 - G1: forensic instrumentation for out-of-bounds recent_avg_pause_time_ratio()
Relates :  
JDK-6902692 - G1: g1CollectorPolicy.cpp:1533, assert(false,"Debugging data for CR 6898948 has been dumped above")
Description
To help debug floating point issues for JDK-6902692 the issue JDK-6898948 was used to add some instrumentation.

The instrumentation is guarded by a flag, which is false by default. So, unless the flag is enabled the instrumentation has no effect.

The patch to add the instrumentation is very small. I'll attach the patch to  JDK-6902692 and remove the instrumentation from the code base. That way we have the instrumentation available if we ever start working on  JDK-6902692 but we don't have to have the debugging code  in our code base.