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  1. JDK
  2. JDK-8036672

G1: alloc_purpose in copy_to_survivor_space() used incorrectly

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Details

    • Bug
    • Resolution: Fixed
    • P4
    • 9
    • 8u20, 9
    • hotspot
    • gc
    • b08

    Backports

      Description

        In G1ParScanThreadState::copy_to_survivor_space(), alloc_purpose is just seen as a hint to allocate(). E.g. a request for an allocation in survivor region might end up being an allocation in an old region (if we're out of survivor regions). However, the alloc_purpose flags is later also used (incorrectly) to determine where the object was actually allocated to 1) determine if the object age should be adjusted and 2) for undoing the allocation.

        After the object has been allocated the alloc_purpose flags should be updated to reflect the actual location of the object.

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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-8038230 G1: alloc_purpose in copy_to_survivor_space() used incorrectly

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8045273 G1: alloc_purpose in copy_to_survivor_space() used incorrectly

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • 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-8053273 G1: alloc_purpose in copy_to_survivor_space() used incorrectly

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

            Enhancement - null JDK-8029075 String deduplication in G1

            • P3 - Major loss of function.
            • Resolved

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                  Updated:
                  Resolved: