JDK-8133096 : Remove duplicate _worker_id in G1ParClosureSuper
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 9
  • Priority: P4
  • Status: Resolved
  • Resolution: Duplicate
  • Submitted: 2015-08-06
  • Updated: 2015-10-28
  • Resolved: 2015-10-28
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JDK 9
9Resolved
Related Reports
Duplicate :  
JDK-8139200 - Eliminate G1ParClosureSuper::_worker_id
Relates :  
JDK-8133047 - Rename G1ParScanThreadState::_queue_num to _worker_id
Description
G1ParClosureSuper has the fields 

   G1ParScanThreadState* _par_scan_state;
   uint _worker_id;

and later asserts

  assert(_worker_id == _par_scan_state->worker_id(), "sanity");

which means that _worker_id seems to be available via _par_scan_state anyway.

Look if _worker_id can be removed without negative performance impact.