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  1. Qt
  2. QTBUG-19345

Qt 5: aynchronous I/O for files

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Details

    • Suggestion
    • Resolution: Won't Do
    • P3: Somewhat important
    • Some future release
    • None
    • Core: I/O
    • None

    Description

      The QFile API is fine for fast local filesystems (e.g. hard drive on a desktop), but can block the thread for some time when used on a slow filesystem.
      For example, mounted network drives in desktops or MMC cards in mobile phones can sometimes take a long time to complete an I/O request.

      Unix has non blocking mode + select()
      Windows has "overlapped IO"
      Symbian (if it gets a Qt5 port) has active objects.

      Each case works well with the event dispatcher for the OS in question, so it's mainly a question of having a good API.

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          is required for

          Suggestion - Public suggestions QTBUG-23601 QFile::copy interrupting

          • Not Evaluated - Not yet evaluated/prioritized
          • Reported
          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-71036 Qt Core Changes in Qt 6

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

          Suggestion - Public suggestions QTBUG-19944 Adopt libuv for high performance asynchronous I/O API, possibly even the core event loop

          • Not Evaluated - Not yet evaluated/prioritized
          • Reported
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              Eddy Edward Welbourne
              shkearns Shane Kearns
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                Created:
                Updated:
                Resolved:

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