[Poppler-bugs] [Bug 50992] library should be thread-safe

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=50992

--- Comment #44 from Thomas Freitag <Thomas.Freitag at alfa.de> ---
Created attachment 67637
  --> https://bugs.freedesktop.org/attachment.cgi?id=67637&action=edit
Patch for okular to use the thread safe qt library

Even if a okular patch is a little bit off topic for a poppler bug, I upload it
here "as a testcase". I replaced nearly every lock/unlock. From my point of
view only the annotation stuff is open.
Funny: because okular renders with this patch and can search parallel, the
search may be jump to a white page, and when the rendering for this page
finishes the former searched text is marked :-)
@Albert: it would be nice if You can test this patch BEFORE having a deeper
look into it. I haven't found any error, but I'm not familiar with okular, and
at least I definitely have not tested 
a) PDF with JavaScript
b) PDF with links and following links
c) PDF with movies
It should work, as far as I understand (my own) code, but it would be nice if I
can get a confirmation from You in near futur and not until when I already
forget what I did :-)

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