"Resume": how sophisticated is it exactly?

[baryon]

So Resume is supposed to not only launch the apps you had running before shutting down, but it should also put those apps in the state they were at that point, right?

1)

Now is this a system wide feature, or does it have to be supported by the application? Say I'm working on Photoshop and I have 10 open documents. If I reboot, will it restore Photoshop and its 10 open documents as it was? If not, will it at least just launch Photoshop when I reboot, even if it doesn't reopen my documents?

2)

My other question is: does Resume simply relaunch the apps that you had open before shutdown (i.e. the dock icon bounces and the app starts to load) when you boot, or does it actually restore some sort of memory image to the RAM?

So when you have 20 apps open and you reboot with Resume, will you then get 20 bouncing dock icons for 10 minutes, and you have to wait until they all launch, or are they instantly already there when you log in?

 

[edmartin]

My experience with it (before I shut it off because I found it quite annoying) was that it works with all apps and re-opens to the state that app was in when you last quit it. So if you had 20 PhotoShop images open, it would open them again. But it goes to the state that you had when you last closed the app - not to what it was when you last rebooted (unless, of course, the last "close" of the app was at reboot).

It can be turned on or off in System Preferences/General.

 

[baryon]

My experience with it (before I shut it off because I found it quite annoying) was that it works with all apps and re-opens to the state that app was in when you last quit it. So if you had 20 PhotoShop images open, it would open them again. But it goes to the state that you had when you last closed the app - not to what it was when you last rebooted (unless, of course, the last "close" of the app was at reboot).

It can be turned on or off in System Preferences/General.

Thanks! That sounds cool!
So does it actually restore a RAM image somehow then?

 

[mrapplegate]

Thanks! That sounds cool!
So does it actually restore a RAM image somehow then?

It's written to disk I believe.

 

[Nishi100]

It's written to disk I believe.

Yeah. It's written to the disk, as RAM is cleared on shutdown.

I think it works like paging - it copies everything that's in the RAM (that's support resume) and store in on the disk; when you boot up, it'll copy it back to the RAM, therefore opening it back up again.

 

[baryon]

So that's like selective hibernation, as it only "hibernates" the user's apps and not the OS (since you reboot for a reason)? That's pretty cool, I thought this will need application support (like for auto save) but then it's not the case.

I'm looking forward to Lion more and more...

 

[Saturn1217]

Also curious about resume

Hi there,

Also curious about the resume feature. In my opinion it is one of the few features of lion that I am actually looking forward too. (many lion 'features' actually seem quite awful to me but I should probably reserve judgement until I try it for myself)

I was wondering if, when opening an app with resume on, it was like opening firefox (or safari) with the option of load all tabs from last time. aka unless you are clever the app is really slow to start up because it has to restore all these open windows from last time you used it. Do people notice this kind of slow down or does it actually 'just work' and open as fast as if you were opening an app without resume.

I ask because in my work flow I often leave apps open simply because I know I won't be able to remember later what files I needed to have open (happens most often with preview and research articles). If resume actually works efficiently I may have to try Lion out.

 

[brijazz]

As long as it's sophisticated enough to know when I was looking at pr0n and that I don't want it resumed when my wife opens up Safari, I'm good

 

[ErikGrim]

As long as it's sophisticated enough to know when I was looking at pr0n and that I don't want it resumed when my wife opens up Safari, I'm good

Private Browsing + option-command-q will do your marriage wonders.

 

[menano]

It's not good if you've been watching porn late last night and then want to show a funny video to your parents, opening one video (as any other doc) will also open what the application (quicktime or whatever) was like when last quit.