July 2008 - Darwin-dev - lists.apple.com

Re: "Kicking" the screensaver/display timers
by Ethan Bold 23 Jul '08

23 Jul '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: "Kicking" the screensaver/display timers
by Kevin Elliott 23 Jul '08

23 Jul '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Are you sure about that? I just executed: -Kevin Elliott DTS Engineer, CoreOS/HW kevin_elliott(a)apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… On Jul 22, 2008, at 10:06 PM, Eli Bach wrote: find /Developer/SDKs -name '*.h' -print0|xargs -0 grep IOPMAssertionCreate and it only returned results in the 10.5 SDK [with no results for IOPMAssertionCreateWithName]. It's 10.5 only. You can read about it in the 10.5 IOKit release notes here: <http://developer.apple.com/releasenotes/Darwin/RN-IOKitPowerManagment/index… > This email sent to site_archiver(a)lists.apple.com

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About disk snapshot
by XiongJia Le 23 Jul '08

23 Jul '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:mime-version:content-type:content-transfer-encoding :content-disposition; bh=WQBzzClwdflLaFRv5BkodDXMFXJFz2HHONkuG2BKAdY=; b=jgjVSQjhzXrshVtL9yFPSuPj5fFpNFnplPG9Ocfs+KI8MmC01RHFRasLK5fLW2Goz3 GQsMz6UkriXACy6PRzOLyQCCdtvxrVChQTYQ5kJQtJg4TS6MhNQrw7TgybGawgaaBIPT W2bo/Nyl2bZ/NfdIMHSyugkgUkOayGuJi0uCM= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type :content-transfer-encoding:content-disposition; b=LCuKMPxOX2WILBjA9hyZ/qKpRWo6irGoHIFcVT/P4HvRN3uqtHYKJVSdTlwSkkt3bk a5+A9NuYyi4K9rHccVF1qlVRsElmm97tuXV88Fwy/zXJLYllFKGgllOGWRHy+CzD0xGV YmFqfZ9AjCtR9NbgveuPMH5G8ws/KOaJ7Q0BU= Hi all, Because I work for an application what need automatically create a disk snapshot on OS X. I read some documents about this. I think we can use the shadow file. Example, we can mount a disk like this: "hdituilt mount disk -shadow /shadow.image" I think at this time all I/O will redirected to shadow file and I can copy my snapshot from the RAW Device. But that have some problems. The first that is must need re-mount the disk, and I think at system run time we can't re-mount the boot volume. The second is I can not merge the shadow data to the real device when after created the snapshot. Is have any easy way to create a snapshot for local disk? Thanks, Xiongjia Le _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: "Kicking" the screensaver/display timers
by Eli Bach 23 Jul '08

23 Jul '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:from:to :in-reply-to:content-type:content-transfer-encoding:mime-version :subject:date:references:x-mailer; bh=l5n0sOwVY9PRg6AGM2IebJZ3FaNlptF2N1zruV+QHm8=; b=Q/qMqrwomwiKtpsSlw288r4UOfZ+K61k/ttpQhWJh1PdGPGGAqf5CjRBACJzw496dt iWkLhwLz04snhxv0rccOqCS9za503vlHavg8NtCx8jGvHH36d5/p2eDYgGQRVA0dGRWz 0QEiKmk9ahf1JtbSX787GMDZieu4k1D4PgVE0= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:from:to:in-reply-to:content-type :content-transfer-encoding:mime-version:subject:date:references :x-mailer; b=hDDghqHlUXGBmWoFsV5HSrVyXZEvKMuUHsh0AgtBPE1z84YxTW3pf3y47jHu93muyV Gzpr5CFrrd3irUb3Fa6ikfQn0Msj+l1kJeuNzy8Q0/f/Nc5urCI/igk8VBljfYpnfxQZ eBi6kw4SJqD8Tl6JWev/jkrdriT5nfwztRMkU= On Jul 22, 2008, at 9:19 PM, Terry Lambert wrote: Terry, Are you sure about that? I just executed: _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… On Jul 21, 2008, at 5:26 PM, Steve Checkoway wrote: On Jul 21, 2008, at 1:47 PM, Ethan Bold wrote: Until now, UpdateSystemActivity() was the only game in town, but please don't use it anymore! We've got a better alternative. IOPMAssertionCreateWithName() doesn't seem to exist anywhere (google knows nothing about it). IOPMAssertionCreate() doesn't seem to exist in pre-10.5 and since I see no need to restrict to 10.5, that doesn't work for me. * Prefer IOPMAssertionCreateWithName(), which lets you pass a string describing the purpose of the assertion (for debugging & diagnostic use for Apple & yourself) over the vanilla IOPMASsertionCreate. If you invoke IOPMAssertionCreate from multiple points in your code; naming the assertions differently will help identify leaks. As I said, IOPMAssertionCreateWithName() doesn't seem to exist. Xcode doesn't know about it, google doesn't know about it, I can't find it on my system: $ find /System/Library/Frameworks -name '*.h' -print0|xargs -0 grep IOPMAssertionCreateWithName prints nothing. Try IOPMAssertionCreate(); it's defined in the 10.4 and 10.5 SDK in IOKit.framework/Versions/A/Headers/pwr_mgt/IOPMLib.h. I think 10.4 was the first place it was published as non-private. -- Terry find /Developer/SDKs -name '*.h' -print0|xargs -0 grep IOPMAssertionCreate and it only returned results in the 10.5 SDK [with no results for IOPMAssertionCreateWithName]. This email sent to site_archiver(a)lists.apple.com

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Re: "Kicking" the screensaver/display timers
by Terry Lambert 23 Jul '08

23 Jul '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com -- Terry _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… On Jul 21, 2008, at 5:26 PM, Steve Checkoway wrote: On Jul 21, 2008, at 1:47 PM, Ethan Bold wrote: Until now, UpdateSystemActivity() was the only game in town, but please don't use it anymore! We've got a better alternative. IOPMAssertionCreateWithName() doesn't seem to exist anywhere (google knows nothing about it). IOPMAssertionCreate() doesn't seem to exist in pre-10.5 and since I see no need to restrict to 10.5, that doesn't work for me. * Prefer IOPMAssertionCreateWithName(), which lets you pass a string describing the purpose of the assertion (for debugging & diagnostic use for Apple & yourself) over the vanilla IOPMASsertionCreate. If you invoke IOPMAssertionCreate from multiple points in your code; naming the assertions differently will help identify leaks. As I said, IOPMAssertionCreateWithName() doesn't seem to exist. Xcode doesn't know about it, google doesn't know about it, I can't find it on my system: $ find /System/Library/Frameworks -name '*.h' -print0|xargs -0 grep IOPMAssertionCreateWithName prints nothing. Try IOPMAssertionCreate(); it's defined in the 10.4 and 10.5 SDK in IOKit.framework/Versions/A/Headers/pwr_mgt/IOPMLib.h. I think 10.4 was the first place it was published as non-private. This email sent to site_archiver(a)lists.apple.com

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Re: "Kicking" the screensaver/display timers
by Shayne Wissler 22 Jul '08

22 Jul '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:cc:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=LuTsTykeVc0akzhKjQ82DQS636YoI/2aV8V2dyU/G1Q=; b=QTPFSXR0Bdg6VO+Lg2yZSfwMwE1bf9qnpHnNV58qB2E8QPcgNwkHzezgiblTNTbHIN hLEQC5azcHSd2R/2wp+LBIDwHOc9/kpZjH5pPDu6b43nGyzCSame0pORWtQqnmROI3IO LvkLFsWkjE0GPRWgYItnkPrA8lWf8CzNQNcZo= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=Lcp1mVGCy+Nu1dJYtGwUfi9a8Lx2KrfZ6l09hGUXqiCs2mqesFiJUIZKfUcXgt7j7J vnlbvccyXtQUBafGdEYKDLJQ0A6+Zjf32pUeLf6POteqnaTKiL48K9Qpu8MUEBcEtjvo 73vRywgB+g6YW01f5l9ulDgYyyUV0Ajhs/5Sg= Thanks again Ethan for your help. This code has the "kicking" effect I was after for *display sleep*, but has no effect on the screensaver: IOPMAssertionID assertionID; IOReturn err = IOPMAssertionCreate(kIOPMAssertionTypeNoDisplaySleep, kIOPMAssertionLevelOn, &assertionID); err = IOPMAssertionRelease(assertionID); I can probably get by with just this by disabling the screensaver, but it'd be nice if the screensaver could be "kicked" as well. Any ideas? Shayne On Fri, Jul 18, 2008 at 5:49 PM, Ethan Bold <ebold(a)apple.com> wrote: > Check out IOPMAssertionCreate() with type kIOPMAssertionTypeNoDisplaySleep. > This is new in 10.5. > > It's described in the 10.5 Darwin release notes here: > http://developer.apple.com/releasenotes/Darwin/RN-IOKitPowerManagment/index… > > And discussed in practice here on a cocoa mailing list: > http://www.cocoabuilder.com/archive/message/cocoa/2008/6/19/210697 > > -Ethan > > On Jul 18, 2008, at 4:24 PM, Shayne Wissler wrote: > >> Hello, >> >> I need an API call/approach for "kicking" the the >> display-sleep/screensaver timers, as if the user had moved the mouse >> or pressed a key. I need a program to be able to wake up the display >> and/or stop the screensaver, without having the user interact with the >> mouse or keyboard. (E.g., for an app used in a classroom situation to >> broadcast a message to a Mac hanging on a wall that happened to be in >> sleep mode). >> >> Any pointers to a relevant API would be appreciated. >> >> >> Shayne >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) >> Help/Unsubscribe/Update your Subscription: >> http://lists.apple.com/mailman/options/darwin-dev/ebold%40apple.com >> >> This email sent to ebold(a)apple.com > > _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: "Kicking" the screensaver/display timers
by Steve Checkoway 22 Jul '08

22 Jul '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Jul 21, 2008, at 1:47 PM, Ethan Bold wrote: Actually, it seems to be in the CoreServices framework, not Carbon. -- Steve Checkoway "Anyone who says that the solution is to educate the users hasn't ever met an actual user." -- Bruce Schneier _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com - UpdateSystemActivity() is in the Carbon framework; using it may cause you to unnecessarily link with this large & bulky framework, affecting app launch times and memory usage. smime.p7s

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Re: "Kicking" the screensaver/display timers
by Steve Checkoway 22 Jul '08

22 Jul '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Jul 21, 2008, at 9:06 PM, Godfrey van der Linden wrote: -- Steve Checkoway "Anyone who says that the solution is to educate the users hasn't ever met an actual user." -- Bruce Schneier _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com UpdateSystemActivity() is seriously p***ing me off. Bloody iTunes uses it all of the time and it totally freaks out my AntiRSI timers. Apps that blow out fake system activity are just broken now. Since reading joystick input from the IOKit doesn't seem to prevent the screensaver and when it activates (even though my app has captured the display and is rendering into a full-screen OGL context), it causes a massive hiccup in the frame rate inevitably leading to a "miss" (losing points in the game), how do you recommend this be done in 10.3.9 and higher? smime.p7s

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Re: "Kicking" the screensaver/display timers
by Godfrey van der Linden 22 Jul '08

22 Jul '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com My $0.02 Godfrey On 2008-07-22, at 10:26 , Steve Checkoway wrote: On Jul 21, 2008, at 1:47 PM, Ethan Bold wrote: Already using it so that's not a downside. First time I've ever heard of pmset, but interesting. That is handy. -- Steve Checkoway _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/gvdl%40mac.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… UpdateSystemActivity() is seriously p***ing me off. Bloody iTunes uses it all of the time and it totally freaks out my AntiRSI timers. Apps that blow out fake system activity are just broken now. Please don't use UpdateSystemActivity(). It will work, but IOPMAssertionCreateWithName()* is a better option. - UpdateSystemActivity() is in the Carbon framework; using it may cause you to unnecessarily link with this large & bulky framework, affecting app launch times and memory usage. - User's cant identify which process is keeping the display awake when you call UpdateSystemActivity. If you use IOPMAssertionCreateWithName(), OS X can keep track of which processes are responsible (visible by running "pmset -g"). - You only have to create an assertion once to keep the display awake; you need to call UpdateSystemActivity() once every 25-30 seconds to cause a fake keyboard press. It's cleaner code for you. Until now, UpdateSystemActivity() was the only game in town, but please don't use it anymore! We've got a better alternative. IOPMAssertionCreateWithName() doesn't seem to exist anywhere (google knows nothing about it). IOPMAssertionCreate() doesn't seem to exist in pre-10.5 and since I see no need to restrict to 10.5, that doesn't work for me. * Prefer IOPMAssertionCreateWithName(), which lets you pass a string describing the purpose of the assertion (for debugging & diagnostic use for Apple & yourself) over the vanilla IOPMASsertionCreate. If you invoke IOPMAssertionCreate from multiple points in your code; naming the assertions differently will help identify leaks. As I said, IOPMAssertionCreateWithName() doesn't seem to exist. Xcode doesn't know about it, google doesn't know about it, I can't find it on my system: $ find /System/Library/Frameworks -name '*.h' -print0|xargs -0 grep IOPMAssertionCreateWithName prints nothing. This email sent to gvdl(a)mac.com This email sent to site_archiver(a)lists.apple.com

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Re: "Kicking" the screensaver/display timers
by Steve Checkoway 22 Jul '08

22 Jul '08

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Jul 21, 2008, at 1:47 PM, Ethan Bold wrote: Already using it so that's not a downside. First time I've ever heard of pmset, but interesting. That is handy. -- Steve Checkoway _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… Please don't use UpdateSystemActivity(). It will work, but IOPMAssertionCreateWithName()* is a better option. - UpdateSystemActivity() is in the Carbon framework; using it may cause you to unnecessarily link with this large & bulky framework, affecting app launch times and memory usage. - User's cant identify which process is keeping the display awake when you call UpdateSystemActivity. If you use IOPMAssertionCreateWithName(), OS X can keep track of which processes are responsible (visible by running "pmset -g"). - You only have to create an assertion once to keep the display awake; you need to call UpdateSystemActivity() once every 25-30 seconds to cause a fake keyboard press. It's cleaner code for you. Until now, UpdateSystemActivity() was the only game in town, but please don't use it anymore! We've got a better alternative. IOPMAssertionCreateWithName() doesn't seem to exist anywhere (google knows nothing about it). IOPMAssertionCreate() doesn't seem to exist in pre-10.5 and since I see no need to restrict to 10.5, that doesn't work for me. * Prefer IOPMAssertionCreateWithName(), which lets you pass a string describing the purpose of the assertion (for debugging & diagnostic use for Apple & yourself) over the vanilla IOPMASsertionCreate. If you invoke IOPMAssertionCreate from multiple points in your code; naming the assertions differently will help identify leaks. As I said, IOPMAssertionCreateWithName() doesn't seem to exist. Xcode doesn't know about it, google doesn't know about it, I can't find it on my system: $ find /System/Library/Frameworks -name '*.h' -print0|xargs -0 grep IOPMAssertionCreateWithName prints nothing. This email sent to site_archiver(a)lists.apple.com

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