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[Octave-bug-tracker] [bug #44387] unwind_protect_cleanup apparently fail

From: Pantxo Diribarne
Subject: [Octave-bug-tracker] [bug #44387] unwind_protect_cleanup apparently fails to run when calling graphics C++ code
Date: Sat, 04 Apr 2015 10:43:52 +0000
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:35.0) Gecko/20100101 Firefox/35.0 
Follow-up Comment #9, bug #44387 (project octave):

Now I think about it, I have overlooked the mutex mechanism: the construct in
the diff I provided doesn't ensure that "Canvas::print" will have locked the
mutex before Fdrawnow tries to.  
So this is not the proper way to ensure sequential operation across threads.
It only ensures that "Canvas::print" will have to be completed before it is
called again. 

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  <http://savannah.gnu.org/bugs/?44387>

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