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Thomas Vander Stichele 2002-10-24 10:48:21 +00:00
parent 517829a0d4
commit 5ad7894c41
2 changed files with 87 additions and 3 deletions
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69
docs/faq/troubleshooting.xml
View file

@ -2,6 +2,74 @@
<title id="title-troubleshooting">Troubleshooting GStreamer</title>
<qandaset>
<qandaentry>
<question id="troubleshooting-segfault">
<para>
The GStreamer application I used stops with a segmentation fault. What can
I do ?
</para>
</question>
<answer>
<para>
There are two things you can do. If you compiled GStreamer with specific
optimization compilation flags, you should try recompiling GStreamer,
the application and the plug-ins without any optimization flags. This allows
you to verify if the problem is due to optimization or due to bad code.
Second, it will also allow you to provide a reasonable backtrace in case
the segmentation fault still occurs.
</para>
<para>
The second thing you can do is look at the backtrace to get an idea of where
things are going wrong, or give us an idea of what is going wrong.
To provide a backtrace, you should
<orderedlist>
<listitem>
run the application in gdb by starting it with
<programlisting>
gdb (gst-application)
</programlisting>
(If the application is in a source tree instead of installed on the system,
you might want to put "libtool" before "gdb")
</listitem>
<listitem>
Pass on the command line arguments to the application by typing
<programlisting>
set args (the arguments to the application)
</programlisting>
at the (gdb) prompt
</listitem>
<listitem>
Type "run" at the (gdb) prompt and wait for the application to
segfault. The application will run a lot slower, however.
</listitem>
<listitem>
After the segfault, type "bt" to get a backtrace. This is a stack of
function calls detailing the path from main () to where the code is
currently at.
</listitem>
<listitem>
If the application you're trying to debug contains threads, it is also
useful to do
<programlisting>
info threads
</programlisting>
and get backtraces of all of the threads involved, by switching to
a different thread using "thread (number)" and then again requesting
a backtrace using "bt".
</listitem>
<listitem>
<para>
If you can't or don't want to work out the problem yourself, a copy and paste
of all this information should be included in your
<link linkend="using-bugs-where">bug report</link>.
</para>
</listitem>
</orderedlist>
</para>
</answer>
</qandaentry>
<qandaentry>
<question id="troubleshooting-wiki">
<para>
@ -19,5 +87,6 @@ someone else.
</para>
</answer>
</qandaentry>
</qandaset>
</sect1>

21
docs/faq/using.xml
View file

@ -31,7 +31,7 @@ plugin browser available, gst-inspect-gui.
</qandaentry>
<qandaentry>
<question id="using-bugs">
<question id="using-bugs-where">
<para>Where should I report bugs ?</para>
</question>
@ -45,6 +45,16 @@ Bugzilla requires you to make an account here, which might seem cumbersome,
but allows us to at least have a chance at contacting you for further
information, as we will most likely have to.
</para>
</answer>
</qandaentry>
<qandaentry>
<question id="using-bugs-how">
<para>How should I report bugs ?</para>
</question>
<answer>
<para>
When doing a bug report, you should at least describe
<itemizedlist>
@ -55,7 +65,7 @@ how you installed GStreamer (from cvs, source, packages, which ?)</listitem>
</itemizedlist>
</para>
<para>
If you're new to GStreamer, it also is useful for us if you attach output of
It also is useful for us if you attach output of
the gst-feedback command to your bug report.
If you're having problem with a specific application (either one of ours,
somebody else's, or your own), please also provide a log of gst-mask by
@ -65,7 +75,12 @@ myapp --gst-mask=-1 > mask.log 2>&amp;1
gzip mask.log
</programlisting>
(interrupting the program if it doesn't stop by itself)
and attach mask.log.gz to your bug report
and attach mask.log.gz to your bug report.
</para>
<para>
If the application you are having problems with is segfaulting, then
provide us with the necessary gdb output. See
<xref linkend="troubleshooting-segfault" endterm="troubleshooting-segfault"/>
</para>
</answer>
</qandaentry>