JDK-8005032 : G1: Cleanup serial reference processing closures in concurrent marking
- Type: Enhancement
- Component: hotspot
- Sub-Component: gc
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- Submitted: 2012-12-13
- Updated: 2013-09-18
- Resolved: 2013-02-06
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| JDK 7 | JDK 8 | Other |
|---|---|---|
7u40Fixed  |
8Fixed |
hs24Fixed |
Description
The serial reference processing closures in concurrent marking operate directly upon the global marking stack. These closures should be cleaned up or improved: * We should use instances on the parallel reference processing closures in the serial code. The worker id to use is 0. * If we choose to keep the serial specific closures, they should be changed to observe the G1RefProcDrainInterval flag. Since reference processing takes place in the remark pause - we would like to avoid marking stack overflows this late in the marking cycle. Either solution will reduce the likelihood of seeing a stack overflow during reference processing.
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