"Resume": how sophisticated is it exactly?

Discussion in 'Mac OS X Lion (10.7)' started by baryon, Jun 20, 2011.

  1. baryon macrumors 68040


    Oct 3, 2009
    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?


    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?


    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?
  2. edmartin macrumors member

    Jul 23, 2007
    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.
  3. baryon thread starter macrumors 68040


    Oct 3, 2009
    Thanks! That sounds cool!
    So does it actually restore a RAM image somehow then?
  4. mrapplegate macrumors 68030

    Feb 26, 2011
    Cincinnati, OH
    It's written to disk I believe.
  5. Nishi100 macrumors 6502a

    Mar 27, 2010
    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.
  6. baryon thread starter macrumors 68040


    Oct 3, 2009
    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...
  7. Saturn1217 macrumors 6502a

    Apr 28, 2008
    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.
  8. brijazz macrumors 6502


    Jul 31, 2008
    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 :eek:
  9. ErikGrim macrumors 68040


    Jun 20, 2003
    Brisbane, Australia
    Private Browsing + option-command-q will do your marriage wonders.
  10. menano macrumors regular


    Jun 7, 2011
    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.

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