[Kde-graphics-devel] Review Request 120920: Fill SendTo menu async to fix "Bug 312495 - Very slow 'Send to' menu"

[Gregor Mi]

> On Dec. 3, 2014, 7:32 p.m., Kevin Funk wrote:
> > ksnapshot.cpp, line 499
> > <https://git.reviewboard.kde.org/r/120920/diff/5/?file=329421#file329421line499>
> >
> >     Can you introduce KSnapshotSendToActions::waitForFinished, and call that function instead? Will block if not yet finished: but that's okay. It's unlikely that the user will click that fast.

I'll try that


- Gregor


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On Nov. 21, 2014, 8:55 p.m., Gregor Mi wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/120920/
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> 
> (Updated Nov. 21, 2014, 8:55 p.m.)
> 
> 
> Review request for KDE Graphics, KSnapshot, Aaron J. Seigo, and Dominik Haumann.
> 
> 
> Bugs: 312495
>     http://bugs.kde.org/show_bug.cgi?id=312495
> 
> 
> Repository: ksnapshot
> 
> 
> Description
> -------
> 
> Hi, I also feel slightly impaired by Bug 312495 - Very slow "Send to" menu. So here is a fix.
> 
> It consists of the following commits:
>     1. move long-running retrieval of SendTo items to separate method
>     2. fillSendToActionsCache at startup but not yet async
>     3. move code related to SendTo actions to own class and file
>          (this includes the kipi code but KIPI_FOUND was not set in my dev env so thats not tested)
>     4. SendTo menu is built on a separate thread to speed up populating
>     5. delete actions in dtor
> 
> The SendTo actions are now created in QThread which is started on startup of ksnapshot.
> If the user opens the SendTo menu too soon there is a message (as single menu item) that says
> that the menu is still being constructed and that he/she should try a moment later.
> 
> 
> Diffs
> -----
> 
>   main.cpp e7a1efb2fd8398492b96e6f21f90363d99358e12 
>   ksnapshotsendtoactions.h PRE-CREATION 
>   ksnapshotsendtoactions.cpp PRE-CREATION 
>   ksnapshot.h 4e062de8afe5cfd9a98b769f105b1a174b58dc9f 
>   ksnapshot.cpp 6bd38e1508f4887c17a43e2c5cedaf19e1a1dab2 
>   CMakeLists.txt 627e3b4467578205125125323fb682126dd291e6 
>   .reviewboardrc PRE-CREATION 
> 
> Diff: https://git.reviewboard.kde.org/r/120920/diff/
> 
> 
> Testing
> -------
> 
> 1)
> - Start ksnapshot (notice that is as fast as before)
> - Immediately open SendTo menu => there is a message that the menu is not ready yet.
> - Try again after 1 second: menu is populated.
> - Close ksnapshot.
> 
> 2)
> - Start ksnapshot. Wait two seconds and then click SendTo menu
>    => menu is populated right away
> - Close it.
> 
> 3)
> Start ksnapshot. Hit the SendTo menu with insanely high button click speed.
>    => No crash observed.
>    
> 4)
> Start ksnapshot and close it immediately.
>    => No crash observed.
> 
> 5) [pending]
> Could no test the kipi code because KIPI_FOUND is not set yet on my environment.
> 
> 
> Thanks,
> 
> Gregor Mi
> 
>

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