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  1. JDK
  2. JDK-8160369 Memory fences needed around setting and reading object lengths
  3. JDK-8166607

G1 needs klass_or_null_acquire

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Details

    • Sub-task
    • Status: Resolved
    • P2
    • Resolution: Fixed
    • 9
    • 9
    • hotspot
    • gc
    • b150
    • generic
    • generic

    Backports

      Description

        Some of the places where G1 uses klass_or_null really should be using klass_or_null_acquire, in order to ensure the successful read of the klass preceeds later reads that are dependent on it.

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8258933 G1 needs klass_or_null_acquire

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8261220 G1 needs klass_or_null_acquire

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed
            is blocked by

            Sub-task - The sub-task of the issue JDK-8166583 Add oopDesc::klass_or_null_acquire()

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Sub-task - The sub-task of the issue JDK-8166663 Simplify oops_on_card_seq_iterate_careful

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved
            relates to

            Enhancement - null JDK-8071280 Specialize HeapRegion::oops_on_card_seq_iterate_careful() for use during concurrent refinement and updating the rset

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Enhancement - null JDK-8162928 Micro-optimizations in scanning the remembered sets

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

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                kbarrett Kim Barrett
                kbarrett Kim Barrett
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                Dates

                  Created:
                  Updated:
                  Resolved: