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rated 0 times [  2] [ 0]  / answers: 1 / hits: 534  / 3 Years ago, wed, july 28, 2021, 2:11:58

I use Gnome Do as a launcher for most things. I have it set to run on login and for most of the time it sits in the background waiting for me to mash a keyboard shortcut. About once a week, it falls over. I mash my shortcut and nothing happens. I have to re-launch it.



It's not amazingly annoying but I would like to know if there are any good ways to make sure desktop applications keep running forever. If they die, they get re-launched (perhaps with a crash timeout so if it crashes on load, it doesn't keep trying to run it over and over and over again).



I know some applications do this. On Gnome2, if gnome-panel isn't running, the system forces it to load. Is there a simple way of tapping into this logic (of course, without breaking Gnome).



I don't want this question to be too specific to Gnome Do or even Gnome because I have more than one application for a solution (I run Boxee on an OpenBox desktop on our media centre) and I'm sure other people all have their own issues they'd like to fix through something like this.


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 Answers
7

Another not so elegant solution:



#!/bin/bash



threshold=2

program="$1"



while true; do

    start=$(date +%s)

    "$program"

    ret_val=$?

    stop=$(date +%s)

    if [[ ret_val -eq 0 ]]; then

        # normal exit, quit

        exit 0

    else

        # abnormal exit, check runtime. if < threshold quit

        runtime=$((stop - start))

        if [[ runtime -lt $threshold ]]; then

            echo "crash on start"

            exit 1       

        fi

    fi

done


This will restart, if the program (first argument) exits with a return code != 0 and ran at least threshold seconds.



I tried to create an Upstart job using the respawn and respawn limit options, but that somehow failed.


[#44787] Wednesday, July 28, 2021, 3 Years  [reply] [flag answer]
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