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  1. Qt
  2. QTBUG-65504

No autorelease pool block for event loop iteration

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 6.4
    • 5.9.3
    • QPA
    • None
    • macOS 10.12 (Sierra)

    Description

      There is no Cocoa local autorelease pool for each QApplication event loop iteration.

      Local autorelease pools are provided within NSApplication event handling, but Qt events which are delivered via CFRunLoop source do not have one.

      This is an unexpected behaviour and may cause leaks. The only way autorelease objects are currently released is when application modal window is shown and NSApp runloop is interrupted, which is not a proper way.

      Proposed patch is attached.

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          relates to

          Epic - Created by Jira Software - do not edit or delete. Issue type for a big user story that needs to be broken down. QTBUG-45769 Considerations and issues when using NSAutoreleasePool in Qt

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-60012 [macos] Continuously increasing memory consumption when calling QWidget::update()

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
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            People

              vestbo Tor Arne Vestbø
              tihiy Stanislav Zinuhkov
              Veli-Pekka Heinonen Veli-Pekka Heinonen
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              Dates

                Created:
                Updated:
                Resolved:

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