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Program suspend

KDE4 Brainstorm

Score 75%

flynaked

Link: http:// Downloads: 194	Submitted: May 20 2006
Description: Basic idea: Right click and select suspend, then KDE will dumb all the information the app is using to a .session file - where the program can be started with all the data you had before - and then exit the app. another possible thing, is bundle several .session files so multiple apps will start from a single .session file License: GPL

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Might be difficult

by rhorn on: May 21 2006

Score 50%

rhorn
Home

I like the idea, but I'm fairly certain that this is going to require more than just KDE to do this. It's going to require some kernel tinkering.

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Re: Might be difficult

by fonz2591 on: May 21 2006

Score 50%

fonz2591

Well...
There is a UNIX command to suspend jobs and (I think) processes. But I'm not sure how KDE handles applications.

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Re: Re: Might be dif

by marekw77 on: May 25 2006

Score 50%

marekw77

The mockup shows Firefox, AFAIK Firefox is a gtk based app, it stores it's state using mechanisms alien to KDE, hence KDE would have no state management for that application.
Suspending an app using the kill command is not what the user wants here, since I suspect he wants to resume it, possibly between reboots.

Stage 1 Gentoo Linux user :)
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suspend command

by DexterMagnific on: May 22 2006

Score 50%

DexterMagnif ic

kill -SIGSTOP pid
killall -SIGSTOP name

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Re: suspend command

by vdboor on: May 25 2006

Score 50%

vdboor
KMess
Home

That also freezes the UI. ;-)
Ctrl+Z has the same effect when the application is started from the console.

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Re: Re: suspend comm

by flynaked on: May 31 2006

Score 50%

flynaked

but if you wanted it for any program your using... that would be alot of consols

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Impractical

by spookster on: Jul 7 2006

Score 50%

spookster
Home

In reality this is impractical with the Linux kernel and probably most OSes. What do you do with things like open file handles, which could be stored anywhere in the apps memory? What happens when you restore an app and the environment has changed so that what it was doing before doesn't make any sense? (e.g. the file it was editing has moved).

This feature would have to be implemented on a per application basis, and you would then do it only for the apps where it would make sense.

Down vote I'm afraid.

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Re: Impractical

by NyOS on: Jul 10 2006

Score 50%

NyOS

I think it's good and easy to implement (via sending signals).

If the WM would minimize that window, then it won't freeze, opened files could also remain opened. Exactly when pressing ctrl-z in a terminal window. That process could also be swapped out easily.

It would be good to "pause" a cpu-consuming application, like emulators (even if a similar function is supported by most of them natively (qemu stop/c, maybe dosbox)), or to force OOo/browsers go to swap when not needed.

So, I'd be glad to see a "pause and minimize" feature (unpause when restored/maximized), and maybe a "renice window owner process" for similar purpose.

Light thinks it travels faster than anything but it is wrong. No matter how fast light travels it finds the darkness has always got there first, and is waiting for it. - Terry Pratchett
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It is possible!

by RyanDBair on: Jul 27 2006

Score 50%

RyanDBair

Looking around kde.org I found this little gem: http://cryopid.berlios.de/

Granted its only for Linux ATM and not very mature, but an interesting idea none the less.

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Program suspend

KDE4 Brainstorm

Might be difficult

I like the idea, but I'm fairly certain that this is going to require more than just KDE to do this. It's going to require some kernel tinkering.

Re: Might be difficult

Well... There is a UNIX command to suspend jobs and (I think) processes. But I'm not sure how KDE handles applications.

Re: Re: Might be dif

suspend command

kill -SIGSTOP pid killall -SIGSTOP name

Re: suspend command

That also freezes the UI. ;-) Ctrl+Z has the same effect when the application is started from the console.

Re: Re: suspend comm

but if you wanted it for any program your using... that would be alot of consols

Impractical

Re: Impractical

It is possible!

Looking around kde.org I found this little gem: http://cryopid.berlios.de/ Granted its only for Linux ATM and not very mature, but an interesting idea none the less.

Well...
There is a UNIX command to suspend jobs and (I think) processes. But I'm not sure how KDE handles applications.

kill -SIGSTOP pid
killall -SIGSTOP name

That also freezes the UI. ;-)
Ctrl+Z has the same effect when the application is started from the console.

Looking around kde.org I found this little gem: http://cryopid.berlios.de/

Granted its only for Linux ATM and not very mature, but an interesting idea none the less.