[vdr] Force VDR to save channels.conf

Klaus Schmidinger Klaus.Schmidinger at tvdr.de
Sat Jun 2 16:55:31 CEST 2012

On 27.05.2012 13:37, Anssi Hannula wrote:
> 26.05.2012 23:54, Tobi kirjoitti:
>> On 26.05.2012 20:56, Artem Makhutov wrote:
>>> How ever - when I restart VDR the changes are not getting saved to
>>> channels.conf.
>> Check the syslog. There might be a plugin not cleanly shutting down,
>> making the vdr abort it's shutdown sequence causing it's settings to not
>> be saved.
> Unless things have changed very recently, VDR doesn't save channels.conf
> on shutdown.
> It only saves it
> a) Immediately after user manually modifies channels via VDR
> b) 10 minutes after automatic channel update
> I've been hit with this many times as well, so I'd suggest to change VDR
> so that it saves automatic channel updates on exit as well. Suggested
> patch attached (only compile-tested, so actual testing is needed).

I'm afraid it's not that simple.

channels.conf and timers.conf must always be in sync, because timers
reference channels. Plus you need to have a lock on the Channels list
to prevent any changes from other threads while saving the list.
See the main VDR loop under "// Handle channel and timer modifications":

           if ((modified || timeout) && Channels.Lock(false, 100)) {
               if (timeout) {
                  ChannelSaveTimeout = 0;

Is it really that important to explicitly save automatic channel changes
when VDR stops? After all, they will be applied again next time VDR tunes
to those transponders...


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