April 2007 - Darwin-dev - lists.apple.com

Re: XCode man pages (to replace standard man pages)
by Andrew Gallatin 16 Apr '07

16 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Godfrey van der Linden writes: > HeaderDoc hasn't been touched since it was first written and is out > of date. It seems to be used for the "definitive" IOKit reference at http://developer.apple.com/documentation/Darwin/Reference/IOKit/index.html It would be nice to have whatever tool it is which scrapes the .h files to produce those web pages also produce man pages. > In the end, I suspect, the kernel will never have 'decent' docs. > Thank goodness all you kernel hackers are such good programmers ;-). Yes, we 3rd party developers never have bugs at all! Why, in fact @#$@$<NO CARRIER> :) Drew _______________________________________________ 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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inhibit crash / "re-open" dialog?
by jmzorko＠mac.com 16 Apr '07

16 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com "... the greater is the beauty the profounder is the stain" -- Stereolab, "Pack Yr Romantic Mind" Hello, all ... Regards, John Falling You - exploring the beauty of voice and sound http://www.fallingyou.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… I've written a quickie Perl script that, among other things, starts / stops VLC (via launchd, so launchd will restart it if it crashes). This works fine, but for the occasional time where VLC does crash, OSX brings up a dialog asking the user if they want to re-open it, not realizing that launchd already will. Is there a way I can inhibit this dialog from appearing for this app (VLC)? This email sent to site_archiver(a)lists.apple.com

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Re: how to detect inserted DVD media from bash or Perl?
by Steve Hayman 15 Apr '07

15 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 14-Apr-07, at 4:24 PM, jmzorko(a)mac.com wrote: _______________________________________________ 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… How do I detect the presence / insertion of a DVD, much like the autorun mechanism on Linux? I want to automatically run certain operations when the system detects that a DVD with certain files has been inserted. Since this is a quick weekend project for a friend, i'd like to be able to do it in Perl or bash if possible (the "certain operations" I speak of are basically decompress the files and copy them to a certain place). The DVD will likely be created on a Linux or Windows box. You might try using "wait4path /Volumes/MyDVD", which simply waits for a specified path to show up; if the path isn't found, it sleeps until the mount table is updated and then checks again. wait4path exits when the path is finally there. This email sent to site_archiver(a)lists.apple.com

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Re: ::select() and threads question, hopefully posed better :-)
by Godfrey van der Linden 15 Apr '07

15 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Bingo, I think this is what is happening. Godfrey On 12/04/2007, at 06:16 , Mark F. Murphy wrote: It might give a glue if the two ports are vastly different. mark _______________________________________________ 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… When you see a lot of time spent in 'ml_set_interrupts_enabled' it usually means that a use app is spinning across the kernel boundrary. When you trap into the kernel the system need to disable interrupts a couple of times, since shark still tries to sample these times it looks like we are spending a lot of time enabling interrupts, when actually shark is just blinkered and its eyes are uncovered when interrupts are re-enabled. Now X doesn't really spend an extraordinary amount of time with disabled interrupts, in fact for X to hit its multimedia targets we spent quite some time tracking down and exterminating such cases. In OSX unlike Linux and Windows, drivers rarely disable any interrupt but there own and most of the IOFilterInterruptEventSources::filters are quite short, I believe the longest on a default system is USB when high-performance isoch is enabled. When you are running your App I'd like to see what happens to the interrupt latencies, you can measure that with '/usr/bin/latency'. If it shows long paths the Apple will want to know because it will destroy CoreAudio's very low jitter. At 12:41 PM -0700 4/11/07, jmzorko(a)mac.com wrote: I've a bunch of C++ code that runs on Windows and OSX. 99% of the code is portable, and the 1% that isn't mostly has to do with file operations (seeking the POSIX way is slow on Windows, so we had to use the Win32 APIs for that stuff). Anyway, with such a large majority of our code the same across both operating systems, I was expecting to see more-or-less-comparable CPU usage. However, when I run the code, I see the OSX version taking up 4-5x (or more, sometimes 10x) as much CPU as it does under Windows -- this is on my dual 2ghz G5 as well as my 2ghz Core Duo MacBook. Usually when porting apps of this nature and run into issues such as this, you have to look to see if calls are executing in the same way on the new target environment. My guess without seeing your code (and it seems others are guessing this as well)... is that your call to select() is returning a lot more on Mac OS X than it does on your Windows version. Usually when you see CPU being churned in this way, it means there's a tight loop occurring (which may or may not be valid depending on your app). The loop that might be occurring is a return from select() in Mac OS X when such a return would not occur in Windows. In other words, Windows is blocking where as Mac OS X shows different behavior, is not blocking, and returns. Have you compared how many times you're calling select() in Mac OS X versus how many times you call it in Windows? -- ---------------------------------------------------------------------- ----- Mark F. Murphy, Director Software Development <mailto:markm@tyrell.com> Tyrell Software Corp <http:// www.tyrell.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/gvdl%40mac.com This email sent to gvdl(a)mac.com This email sent to site_archiver(a)lists.apple.com

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Re: XCode man pages (to replace standard man pages)
by Godfrey van der Linden 15 Apr '07

15 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Ah now you are asking for something ;-) Cheers Godfrey On 15/04/2007, at 02:47 , Andrew Gallatin wrote: On a somewhat related note, is there any chance y'all could build a section 9 of the man pages containing the header docs from the Kernel framework, cross-referenced, etc? Thanks, _______________________________________________ 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… As the kernel is a mish-mash of many different provenances it is much harder to start documenting the kernel APIs as there is no reasonable place to pick up some default/starter man pages. Also most of the CoreOS kernel team are swamped and documenting kernel APIs is down on the list of priorities. IOKit is the exception to the general dearth of doc in the kernel, as it HAD to be somewhat documented otherwise it would have been useless. However I'm reasonably certain that quite a lot of the HeaderDoc hasn't been touched since it was first written and is out of date. In the end, I suspect, the kernel will never have 'decent' docs. Thank goodness all you kernel hackers are such good programmers ;-). Drew This email sent to site_archiver(a)lists.apple.com

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Re: how to detect inserted DVD media from bash or Perl?
by R. Matthew Emerson 14 Apr '07

14 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Apr 14, 2007, at 4:24 PM, jmzorko(a)mac.com wrote: You could try to use the disk arbitration framework. For a trivial example, see the following URL: http://www.thoughtstuff.com/rme/weblog/?p=3 _______________________________________________ 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… How do I detect the presence / insertion of a DVD, much like the autorun mechanism on Linux? I want to automatically run certain operations when the system detects that a DVD with certain files has been inserted. Since this is a quick weekend project for a friend, i'd like to be able to do it in Perl or bash if possible (the "certain operations" I speak of are basically decompress the files and copy them to a certain place). The DVD will likely be created on a Linux or Windows box. This email sent to site_archiver(a)lists.apple.com

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how to detect inserted DVD media from bash or Perl?
by jmzorko＠mac.com 14 Apr '07

14 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hello, all ... Any help would be appreciated! Regards, John Falling You - exploring the beauty of voice and sound http://www.fallingyou.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… How do I detect the presence / insertion of a DVD, much like the autorun mechanism on Linux? I want to automatically run certain operations when the system detects that a DVD with certain files has been inserted. Since this is a quick weekend project for a friend, i'd like to be able to do it in Perl or bash if possible (the "certain operations" I speak of are basically decompress the files and copy them to a certain place). The DVD will likely be created on a Linux or Windows box. This email sent to site_archiver(a)lists.apple.com

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Re: XCode man pages (to replace standard man pages)
by Andrew Gallatin 14 Apr '07

14 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On a somewhat related note, is there any chance y'all could build a section 9 of the man pages containing the header docs from the Kernel framework, cross-referenced, etc? Thanks, Drew _______________________________________________ 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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man pages == xCode (my goof)
by David Hoerl 14 Apr '07

14 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com David _______________________________________________ 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… Well, it looks like I shot out my missive a bit to quickly. The content for man pages is in fact the same for xCode and "man" . My apologies to anyone who spent the time to do the test. [I had done "man printf" instead of "man 3 printf".] I have had a private chat offlist, and it does appear that the man pages are getting updated - so when you have a problem do enter it on radar. This email sent to site_archiver(a)lists.apple.com

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Re: XCode man pages (to replace standard man pages)
by Martin Costabel 14 Apr '07

14 Apr '07

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Thunderbird 1.5.0.10 (Macintosh/20070221) In a certain sense, they already listened to you ;-) Here is the rather weird story: <file:///Developer/ADC%20Reference%20Library/documentation/Darwin/Reference/ManPages/man3/printf.3.html> Maybe this allows them to update the man pages faster :-) ? -- Martin _______________________________________________ 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… David Hoerl wrote: Abstract: Apple should remove all man pages, and replace man with something that can read the man pages contained in XCode (but where are the pages???) When I tried to verify what you said about Xcode, my Xcode here found a nicely formatted printf(3) man page on my hard disk at This file had been installed by the package DevDocumentation.pkg from the xcode disk (latest version: xcode_2.4.1 from last October), together with html versions of the other 7360 or so man pages. Then I downloaded and installed the recent 245 MB ADC Reference Library update "apr07_adc_reflib_update.dmg" from the Apple developer connection. After this update, all my man pages in /Developer have disappeared! Erased, gone. The corresponding link in the index pages (and this is what Xcode is now finding) now points to a page on Apple's web site: <http://developer.apple.com/documentation/Darwin/Reference/ManPages/man3/pri…> This email sent to site_archiver(a)lists.apple.com

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