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  1. JDK
  2. JDK-8151775

aarch64: add support for 8.1 LSE atomic operations

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 9
    • Fix Version/s: 9
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
    • Resolved In Build:
      b115
    • CPU:
      aarch64
    • OS:
      linux

      Description

      This issue proposes the addition of support for 8.1 LSE atomic operations.

      There are 2 atomic operations which may be useful

      ldadd which atomically adds a value to memory
      swp which atomically swaps a value into memory

      These new instructions offer performance advantages over the existing implementations using exclusive regions.

        Activity

        Hide
        hgupdate HG Updates added a comment -
        URL: http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/03fb00b96355
        User: enevill
        Date: 2016-03-30 16:08:26 +0000
        Show
        hgupdate HG Updates added a comment - URL: http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/03fb00b96355 User: enevill Date: 2016-03-30 16:08:26 +0000
        Hide
        hgupdate HG Updates added a comment -
        URL: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/03fb00b96355
        User: lana
        Date: 2016-04-20 17:53:12 +0000
        Show
        hgupdate HG Updates added a comment - URL: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/03fb00b96355 User: lana Date: 2016-04-20 17:53:12 +0000

          People

          • Assignee:
            enevill Ed Nevill
            Reporter:
            enevill Ed Nevill
          • Votes:
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            Watchers:
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            Dates

            • Created:
              Updated:
              Resolved: