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  1. JDK
  2. JDK-8147832 JEP 285: Spin-Wait Hints
  3. JDK-8147844

new method j.l.Thread.onSpinWait() and the corresponding x86 hotspot instrinsic

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    • Sub-task
    • Resolution: Fixed
    • P4
    • 9
    • None
    • hotspot
    • b120

    Description

      For details on the java.lang.Thread.onSpinWait() methods refer to the parent task.

      This subtask adds a new method onSpinWait() to java.lang.Thread class with a legitimate implementation that is empty. A corresponding x86 hotspot intrinsic allows to actually benefit from this spin loop hint by injecting a 'pause' instruction into the c2 compiled code.

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              ikrylov Ivan Krylov
              ikrylov Ivan Krylov
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                Updated:
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