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  1. JDK
  2. JDK-8271280

[lworld] Revisit memory barrier requirements around inline type allocations

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    Details

    • Type: Enhancement
    • Status: Open
    • Priority: P3
    • Resolution: Unresolved
    • Affects Version/s: repo-valhalla
    • Fix Version/s: repo-valhalla
    • Component/s: hotspot
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      Description

      InlineTypeBaseNode::buffer currently adds a StoreStore barrier to not let stores that initialize this buffer be reordered with a subsequent store that would make this buffer accessible by other threads.

      We should evaluate the impact of the barrier which is potentially blocking other optimizations and re-visit the fixes of the linked bugs.

      We should also re-visit the barrier code in Parse::array_load.

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              Assignee:
              Unassigned Unassigned
              Reporter:
              thartmann Tobias Hartmann
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                Updated: