Date: Fri, 14 Apr 2017 10:11:44 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-ports-bugs@FreeBSD.org Subject: [Bug 218652] lang/python36: thread issue in external library (both ctypes and C extension) Message-ID: <bug-218652-13@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D218652 Bug ID: 218652 Summary: lang/python36: thread issue in external library (both ctypes and C extension) Product: Ports & Packages Version: Latest Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: Individual Port(s) Assignee: python@FreeBSD.org Reporter: sylvain@sylvaingarrigues.com Assignee: python@FreeBSD.org Flags: maintainer-feedback?(python@FreeBSD.org) Hello,=20 I have libsylvain.so which has just one function (sylvain_display()) which displays an hello world windows through QT libraries. I have this one program `sylvain' which is a single line program which calls sylvain_display from libsylvain.so. When I run `sylvain', I have some debug output from QT on the console, and = the hello world window is displayed on my TV (I am running this on a Raspberry = Pi with FreeBSD). Now, when I run python2.7 or python3.6, and load libsylvain.so either throu= gh the ctypes module or through a C extension module, and call the sylvain_display() function from python, I have the console log output from = QT as with the `sylvain' program, but I don't have the window on my TV! I guess the rendering to the TV is done on a separate thread and this one is not called or locked? I came up with this simple test program to isolate the issue because both P= yQT and PySide now don't work as expected, I have console log but no actual TV output. This used to work one year ago, I don't know what has changed in Python.=20 Hope you guys will figure this out. libsylvain.cpp: http://dev.sylvaingarrigues.com/libsylvain.cpp sylvain.cpp (test program for libsylvain): http://dev.sylvaingarrigues.com/sylvain.cpp=20 sylvain-ctypes.py (load libsylvain): http://dev.sylvaingarrigues.com/sylvain-ctypes.py Also tried with a C extension to rule out ctypes bug, same issue: sylvainmodule.cpp (python module wrapper): http://dev.sylvaingarrigues.com/sylvainmodule.cpp sylvain-next.pu (load sylvainmodule and sylvain_display): http://dev.sylvaingarrigues.com/sylvain-cext.py build script: http://dev.sylvaingarrigues.com/build.sh --=20 You are receiving this mail because: You are the assignee for the bug.=
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