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  1. JDK
  2. JDK-8127120

Pending requests from Application.invokeLater can cause input event starvation

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Details

    • Bug
    • Resolution: Fixed
    • P3
    • 8
    • 7u6
    • javafx
    • None

    • Windows

    Description

      The root cause of RT-19897 is that, on Windows at least, Runnables posted to the event queue with Application.runLater will be processed at a higher priority than input events. This leads to input event starvation in cases where there is always a pending Runnable on the queue. We have a partial solution to RT-19897 by releasing the barrier early allowing the FX application thread a short window of time to process events before posting the next runnable, but it is fragile.

      Additionally, it is the reason we cannot run in full-speed mode without some sort of periodic sleep.

      Ideally, runnables and input events would be treated at the same priority and processed in order. At the very least, we need a mechanism to ensure that we don't starve input events.

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          blocks

          Bug - A problem which impairs or prevents the functions of the product. JDK-8125853 Delayed event delivery

          • P3 - Major loss of function.
          • Resolved
          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8123273 GUI easily locked up by excessive GUI updates

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8127081 Responsiveness of UI controls becomes very slow when the window size is very large, and a MediaPlayer is playing at the same time.

          • P3 - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. JDK-8123805 Event locking when SWT-Shell opened via JavaFX

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8093141 HelloComboBox can get stuck.

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

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              anthony Anthony Petrov (Inactive)
              kcr Kevin Rushforth
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                Updated:
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