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Re: [virt-tools-list] [PATCH 3/3] Fix a segfault when the connection is dropped



On 03/11/2013 04:21 AM, Giuseppe Scrivano wrote:
> The error dialog window was created on the "tick" thread, causing a
> crash in GTK.  Fix it by moving its invocation to the main thread.
> ---
>  src/virtManager/engine.py |    6 ++++--
>  todo.txt                  |    1 -
>  2 files changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/src/virtManager/engine.py b/src/virtManager/engine.py
> index cbed3dd..70912bd 100644
> --- a/src/virtManager/engine.py
> +++ b/src/virtManager/engine.py
> @@ -255,6 +255,7 @@ class vmmEngine(vmmGObject):
>  
>      def tick(self):
>          if not self.config.support_threading:
> +
>              return self._tick()
>  
>          if self._tick_thread and self._tick_thread.isAlive():

I dropped this bit.

> @@ -290,8 +291,9 @@ class vmmEngine(vmmGObject):
>                      logging.debug("Closing connection since libvirtd "
>                                    "appears to have stopped")
>                  else:
> -                    self.err.show_err(_("Error polling connection '%s': %s") %
> -                                      (conn.get_uri(), e))
> +                    error_msg = _("Error polling connection '%s': %s") \
> +                        % (conn.get_uri(), e)
> +                    self.idle_add(lambda: self.err.show_err(error_msg))
>  
>                  self.idle_add(conn.close)
>  
> diff --git a/todo.txt b/todo.txt
> index 9f0e37d..e377bc9 100644
> --- a/todo.txt
> +++ b/todo.txt
> @@ -26,7 +26,6 @@ website: wiki-ify the whole thing, drop static content, move site styling into v
>    Misc issues
>    ===========
>  
> -If libvirt connection is dropped, app segfaults
>  segfault if open test:///default, then try and open testdriver that libvirt can't parse XML
>  
>  
> 

Good catch! That also fixed the test:///default segfault mentioned above as
well. Pushed to gtk3 branch now.

Thanks,
Cole


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