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  1. JDK
  2. JDK-8246476 remove AsyncDeflateIdleMonitors option and the safepoint based deflation mechanism
  3. JDK-8246477

add whitebox support for deflating idle monitors

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Details

    • Sub-task
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • 15
    • 16
    • hotspot
    • b04
    • generic
    • generic

    Description

      The fix for JDK-8153224 Monitor deflation prolong safepoints
      includes several workarounds for invoking the safepoint
      based deflation mechanism via a "special deflation request".
      These workarounds are necessary for several tests that
      expect certain operations, e.g., System.gc() or the whitebox
      equivalents, to deflate idle monitors.

      In order to remove the safepoint based deflation mechanism,
      we have to provide an alternative whitebox APIs for those
      tests that "know too much" about how things work.

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          relates to

          Enhancement - null JDK-8249638 Re-instate idle monitor deflation as part of System.gc()

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

          Enhancement - null JDK-8153224 Monitor deflation prolong safepoints

          • P3 - Major loss of function.
          • Resolved

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              dcubed Daniel Daugherty
              dcubed Daniel Daugherty
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              Dates

                Created:
                Updated:
                Resolved: