Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8206457

Code paths from oop_iterate() must use barrier-free access

XMLWordPrintable

    • Icon: Bug Bug
    • Resolution: Fixed
    • Icon: P4 P4
    • 12
    • 11, 12
    • hotspot
    • gc
    • b09
    • generic
    • generic

      We have several code paths going out from oop_iterate() methods that lead to GC barriers. This is not only inefficient but outright wrong. oop_iterate() is normally used by GC and GC need to see the raw stuff, not some resolved objects. In Shenandoah's full-GC it's fatal to attempt to read objects's forwarding pointers, because it's temporarily pointing to nowhere land.

            rkennke Roman Kennke
            rkennke Roman Kennke
            Votes:
            0 Vote for this issue
            Watchers:
            4 Start watching this issue

              Created:
              Updated:
              Resolved: