Mausberry Shutdown Script Doesn't Save Metadata

cyperghost

@lostless @barrymossel
The version 1.56 could be considerd as 1.70 without the inotify-part. It held all code pieces to detect emulators and to finish them and make ES shutdown properly. It uses the 1.0second endless loop that was introduced in the mausberry script.

So @meleu is working on 1.70 to break the loop.
I'm also interested in 1.70 not using it as power switch rather as a generell switch. I plan to make a small build and this code would improve much.

So meleu will "release" two version.

A shutdown script with better GPIO detection (inotify)
A shutdown script with 1.0sec loop as introduced in mausberry

Why two versions? Simply the inotify package isn't preinstalled!

We can all be happy to have one so extrem gifted coder here in our forum.
Thank you meleu!

Myself got's only a long breath and is willing to learn something new.

Capeman

Would using a script like this be possible with the retropie powerblock?

cyperghost

@Capeman

Seems so.... But please .... we create annother thread

barrymossel

v1.56 works for me. SCUMMVM shuts down immediately without exiting to ES. Is that correct?

lostless

@barrymossel the script is supposed to exit back to es then shut down. Check with other emulators and see if it does that. If not, something is wrong

barrymossel

Only ScummVM. Probably because than one was an exception. But I don't know whether this would be expected behavior for ScummVM or not. Guess @meleu will tell ;)

cyperghost

@barrymossel Please can you use PID detector and check PIDs displayed?
Use ps -a and check PIDs?

meleu

@barrymossel and post the exact script you're using on ghostbin.com or something.

Capeman

If there's any powerblock users, this code works without a hitch with powerblock also, just a simple file edit. How elegant and simple, you guys are awesome!

Powerblock proper ES shutdown

barrymossel

@cyperghost said in Mausberry Shutdown Script Doesn't Save Metadata:

@barrymossel Please can you use PID detector and check PIDs displayed?
Use ps -a and check PIDs?

Sure, when I get back home. What do you want me to do exactly?

@meleu said in Mausberry Shutdown Script Doesn't Save Metadata:

@barrymossel and post the exact script you're using on ghostbin.com or something.

Sure, will do so in some hours.

cyperghost

@barrymossel

Post code of your current switch bash to ghostbin.com and give us the link
Run emulator ScummVM
2.1 Connect with SSH
2.2 Check PIDs (Process ID) during emulator is running
2.2.1 Use PID Detector script
2.2.2 ps - a if PIDs are equal

if PID detector output one number and you type kill PIDNUMBER then the emulator should close :)

Because you said your script (version 1.56) does not work with ScummVM so let us invetigate.

barrymossel

@cyperghost said in Mausberry Shutdown Script Doesn't Save Metadata:

@barrymossel

Post code of your current switch bash to ghostbin.com and give us the link

Run emulator ScummVM
2.1 Connect with SSH
2.2 Check PIDs (Process ID) during emulator is running
2.2.1 Use PID Detector script
2.2.2 ps - a if PIDs are equal

if PID detector output one number and you type kill PIDNUMBER then the emulator should close :)

Because you said your script (version 1.56) does not work with ScummVM so let us invetigate.

I actually didn't say it "doesn't work" with ScummVM. It just looks like it doesn't exit to ES first, but it looks like it goes straight to shutdown. I am just wondering if that is expected.

But I will do the above in a sec.

--- edit---
https://ghostbin.com/paste/jahru

2335 vs. 2336

pi@retropie:~ $ bash pidtest.sh

An emulator is currently running!
It's PID is: 2335

EmulationStation is runnuning!
ES's PID is: 1008
pi@retropie:~ $ ps -a
  PID TTY          TIME CMD
  992 tty1     00:00:00 bash
  997 tty1     00:00:00 bash
  998 tty1     00:00:00 emulationstatio
 1005 tty1     00:00:00 emulationstatio
 1008 tty1     00:00:46 emulationstatio
 2245 tty1     00:00:00 sh
 2246 tty1     00:00:00 bash
 2335 tty1     00:00:00 bash
 2336 tty1     00:00:21 scummvm
 3415 pts/0    00:00:00 ps
pi@retropie:~ $

And another test: 6901 vs 6902

pi@retropie:~ $ bash pidtest.sh

An emulator is currently running!
It's PID is: 6901

EmulationStation is runnuning!
ES's PID is: 1008
pi@retropie:~ $ ps -a
  PID TTY          TIME CMD
  992 tty1     00:00:00 bash
  997 tty1     00:00:00 bash
  998 tty1     00:00:00 emulationstatio
 1005 tty1     00:00:00 emulationstatio
 1008 tty1     00:01:52 emulationstatio
 6815 tty1     00:00:00 sh
 6816 tty1     00:00:00 bash
 6901 tty1     00:00:00 bash
 6902 tty1     00:00:26 scummvm
 8210 pts/0    00:00:00 ps
pi@retropie:~ $

cyperghost

@barrymossel
You see PID Detector says an emulator is running with PID xxxx.

What happens if you kill that PID with kill xxxx and can you also enter output of ps -a after the kill command?

The script is v 1.56! So it's the newest version.

barrymossel

pi@retropie:~ $ kill 6901
pi@retropie:~ $ ps -a
  PID TTY          TIME CMD
  992 tty1     00:00:00 bash
  997 tty1     00:00:00 bash
  998 tty1     00:00:00 emulationstatio
 1005 tty1     00:00:00 emulationstatio
 1008 tty1     00:01:54 emulationstatio
 6902 tty1     00:01:00 scummvm
10250 pts/0    00:00:00 ps

So ScummVM keeps running. I guess, as expected.

cyperghost

@barrymossel That's interesting!
That's because ScummVM creates itself a bash call.

meleu

@cyperghost said in Mausberry Shutdown Script Doesn't Save Metadata:

That's because ScummVM creates itself a bash call.

I would change this sentence to: "That's because runcommand starts ScummVM through a bash call."

;-)

cyperghost

@meleu Ready for quick'n'dirty coding? :)

what about a kill $(expr $emupid + "1")
of course you check before if pid is active :)

meleu

@cyperghost that behavior reported by @barrymossel was the reason why I was killing the emulator with -9 (SIGKILL). When you kill a bash script with SIGKILL it kills all its child processes.

But I realized that this isn't a good approach for retroarch, because it wouldn't save the .srm file...

Looks like there are room for more improvements on that script. Will post something soon. (edit: or maybe you can do it yourself: just check if the first string on that 4th line is bash, if yes, kill the process with -9)

barrymossel

Ehm, I was wondering: does it even matter that ScummVM doesn't exit to ES before shutdown? Is there any ScummVM meta data anyway? Or wouldn't meta data from games you played before ScummVM be saved either?

meleu

@barrymossel said in Mausberry Shutdown Script Doesn't Save Metadata:

Or wouldn't meta data from games you played before ScummVM be saved either?

Yes for this question.