Add "PRETIMEOUT" feature

[legerch]

Hello,

First, I want to thank you for this great library :)
I mainly use it in a C application and I was looking for a way to get a kind of "warning" before the system actually perform the reboot, this could allow more easier debugging. For example, we could register a callback method to call when "pre-timeout" is trigger, allowing to log current state of the application (this is only an example).

I saw in watchdog kernel documentation that we have ioctl WDIOC_SETPRETIMEOUT which allow to register a trigger before watchdog timeout. We also have ioctl WDIOC_GETTIMELEFT allowing to retrieve remaining time before system reboot.

Do you think this kind of feature can be implemented in this library ? (maybe I'm out of specs here ?)

Have a nice day

[troglobit]

Is this a feature request?

[legerch]

Is this a feature request?

Hello,
Yes this is a feature request :) (or more like an idea to discuss). Sorry if that didn't look like it.

[troglobit]

OK. I don't have any use for this myself atm. and I would probably implement it as a libuev timer if I did. If you need it you can add it yourself, and if you want to share it you can make a pull request, then we can have a discussion.