September 2009 - Darwin-dev

Re: method_exchangeImplementations problem
by Jonas Maebe 05 Sep '09

05 Sep '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 05 Sep 2009, at 08:21, Donnie Lee wrote: obj_getMetaClass() returns meta class but obj_getClass() returns class. I just tried to make a test Cocoa app and it seems that it works fine. I think my problem is not related to objc_getClass; will continue investigating it. You may also want to ask your question on Objc-language list. Jonas _______________________________________________ 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: Duplicate radars: good or bad? (Was: Re: Building 10.6' ld64)
by Joar Wingfors 05 Sep '09

05 Sep '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 4 sep 2009, at 19.11, Terry Lambert wrote: j o a r _______________________________________________ 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… The radar in this case isn't an engineering radar, it's a legal one, and they d not like taking interrupts. A bunch of dups on a legal radar are not going to really bear on what is, in the end, a business rather than a technical decision. And you're suggesting that business decisions aren't influenced by the amount of public interest? :-D This email sent to site_archiver(a)lists.apple.com

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Re: method_exchangeImplementations problem
by Donnie Lee 05 Sep '09

05 Sep '09

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:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=w9DiozrVUm/fMW66yIYKSa5u/ELnSg13B4B8hIVyI/g=; b=Zc4fNTWp/uB636sQwSOdpCJq7oBLMrUcpliahEsJdw3C892puREBOZMSUeMRogLnjB xdJplpiYt7dsDKf4BbqjwoujE/dQmk1m+1c+XzjflHCl07m4xRkoPMaZZ8flMg76O4Fb TqAbMqIRzxkpPQxccnLx4eJKDdKBLO2O+SmBA= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=IN2UAeluO4EVhI+WdQcXHfxsuJ7rdm8bH6SutHSokcserJZQxK2BVzPiRWdqdCQ53n Ac7Z5JuUiNazZqVbeTP6cPFXymaDbY/cRJKOuSEoLIwmYbvL8cz2v1/a6be58RSBWJ8j pflnlwY+9AppBej2m6Gcm0h6lVlIBk5REcshg= Hello Terry, obj_getMetaClass() returns meta class but obj_getClass() returns class. I just tried to make a test Cocoa app and it seems that it works fine. I think my problem is not related to objc_getClass; will continue investigating it. Thanks, Donnie. > objc_getClass() is documented as returning the meta class instead of the > class. I think you are possibly calling this on class 1 twice. > > If this doesn't turn out to be the case, you should provide a small code > project as part of the bug report you file. > > -- 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… This email sent to site_archiver(a)lists.apple.com

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Re: Duplicate radars: good or bad? (Was: Re: Building 10.6' ld64)
by Steve Checkoway 05 Sep '09

05 Sep '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Sep 4, 2009, at 7:17 PM, William Siegrist wrote: On Sep 4, 2009, at 7:03 PM, Steve Checkoway wrote: On Sep 4, 2009, at 10:00 AM, William Siegrist wrote: Got it, thanks! -- 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 The Darwin Team is aware of the request for libunwind. I'll put down another vote for it, so no need to file more radars or emails. Comments like this confuse me since other @apple.com people have said that radars are the only way Apple knows what people are wanting and duplicate radars show more interest. Like Terry said, in this case, 1 person wanting it so they can build ld64 is the same as 100 people wanting it. We know everyone needs it to build ld64. smime.p7s

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Re: Maximum EA size
by Michael Smith 05 Sep '09

05 Sep '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Sep 4, 2009, at 12:05 PM, darwin-dev-request(a)lists.apple.com wrote: = Mike _______________________________________________ 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… Better safe then sorry, so can anybody tell us what is a reliable maximum size ? ATTR_MAX_SIZE is the largest attribute the current implementation supports. There is no upper bound defined; some implementations (e.g. specific HFS versions) may have lower limits. You should avoid imposing any explicit limits on EA size if possible to minimise the risk that a later change in the system will cause compatibility issues for you. This email sent to site_archiver(a)lists.apple.com

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Re: Duplicate radars: good or bad? (Was: Re: Building 10.6' ld64)
by William Siegrist 05 Sep '09

05 Sep '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Sep 4, 2009, at 7:03 PM, Steve Checkoway wrote: On Sep 4, 2009, at 10:00 AM, William Siegrist wrote: -Bill _______________________________________________ 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… The Darwin Team is aware of the request for libunwind. I'll put down another vote for it, so no need to file more radars or emails. Comments like this confuse me since other @apple.com people have said that radars are the only way Apple knows what people are wanting and duplicate radars show more interest. Like Terry said, in this case, 1 person wanting it so they can build ld64 is the same as 100 people wanting it. We know everyone needs it to build ld64. This email sent to site_archiver(a)lists.apple.com

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Re: Duplicate radars: good or bad? (Was: Re: Building 10.6' ld64)
by Terry Lambert 05 Sep '09

05 Sep '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com [ ... could have been quoting me, too ... ] -- 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 Sep 4, 2009, at 7:03 PM, Steve Checkoway wrote: On Sep 4, 2009, at 10:00 AM, William Siegrist wrote: The Darwin Team is aware of the request for libunwind. I'll put down another vote for it, so no need to file more radars or emails. Comments like this confuse me since other @apple.com people have said that radars are the only way Apple knows what people are wanting and duplicate radars show more interest. The radar in this case isn't an engineering radar, it's a legal one, and they d not like taking interrupts. A bunch of dups on a legal radar are not going to really bear on what is, in the end, a business rather than a technical decision. This email sent to site_archiver(a)lists.apple.com

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Duplicate radars: good or bad? (Was: Re: Building 10.6' ld64)
by Steve Checkoway 05 Sep '09

05 Sep '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Sep 4, 2009, at 10:00 AM, William Siegrist wrote: For example: On Oct 29, 2007, at 6:15 PM, Chris Espinosa wrote: On Oct 29, 2007, at 5:10 PM, David Catmull wrote: Don't let a resolution of "duplicate" keep you from filing bugs. -- 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… The Darwin Team is aware of the request for libunwind. I'll put down another vote for it, so no need to file more radars or emails. Comments like this confuse me since other @apple.com people have said that radars are the only way Apple knows what people are wanting and duplicate radars show more interest. On Oct 29, 2007, at 4:28 PM, Chris Hanson <cmh(a)mac.com> wrote: It ought to be just the opposite: it means you're not the only one complaining about the issue, which should be encouraging. It is, in fact. Many teams (mine included) put a premium on high- dup-count bugs, and the Mac OS X Project Office usually gives recognition and a small prize for the engineer who fixed the bug with higest dup count in a given release. This email sent to site_archiver(a)lists.apple.com

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Re: method_exchangeImplementations problem
by Terry Lambert 04 Sep '09

04 Sep '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hello! I'd like to override delegate functions in Cocoa app. They are in Class1 and Class2 (which is an instance of Class1). I get these classes via objc_getClass(). Then I coded two functions and add them to classes using class_addMethod(). Then I called method_exchangeImplementations() for both of them. Replaced delegate for Class1 works fine. But replaced delegate for Class2 don't work. It starts working only for new instances of Class1 (and Class2 as Class1 instance variable), but don't work for original instance. How to make it work? PS: First I tried to use categories to override these delegates, but for x86_64 linker don't link it as "lazy bound", even with "-undefined dynamic_lookup" (i386 do it fine). Am I right that its impossible to use categories anymore? -- 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 Sep 4, 2009, at 6:33 AM, Donnie Lee wrote: objc_getClass() is documented as returning the meta class instead of the class. I think you are possibly calling this on class 1 twice. If this doesn't turn out to be the case, you should provide a small code project as part of the bug report you file. This email sent to site_archiver(a)lists.apple.com

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Re: Sending SCSI commands in Mac OS X
by Terry Lambert 04 Sep '09

04 Sep '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Sorry for the re-send. I blame my iPhone. Please ignore. -- Terry On Sep 4, 2009, at 10:08 AM, Terry Lambert <tlambert(a)apple.com> wrote: -- Terry On Jul 23, 2009, at 7:04 AM, mlists(a)ugsoft.de wrote: Am 23.07.2009 um 13:26 schrieb Terry Lambert: It states: Uwe _______________________________________________ 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… Sorry, my answer on the driver was incorrect. Apparently some of the documentation on <http://developer.apple.com> is out of date, and the only supported way to access some of these devices is through a user client. I guess the last time I used SCSI tapes on Mac OS X (to read some old QIC tapes on a Blue and White G3), I had installed your company's ES-Backup product <http://www.ugsoft.de> to get device shims and forgot about it! Did you go to <http://developer.apple.com> and read the document "SCSI Architecture Model Device Interface Guide"? "By design, Mac OS X does not allow applications to send SCSI or ATA commands to storage devices unless the application developer also provides an in-kernel device driver that supports the commands." One of the intents if this is to allow the driver to model state for such coomands such that the state if the device is known to the driver at all times. For standard tape devices, you should not need to write your own driver; if you plug the device in, it will show up in /dev, Never seen a tape drive, neither SCSI, FireWire, USB nor FibreChannel connected to Mac OS X 10.2 up to 10.5 which shows up in /dev. What device filename should I look for? and you can at least issue reads, writes, and standard commands, such as causing a rewind, via the device file. For non-standard commands, such as you would use to control loading and unloading tapes in a tape robot, etc., you will need to write an in-kernel driver that knows how to talk to the hardware and subclasses the more generic device (i.e. the IOKit model lets you write only the missing pieces implementing the missing control commands; you don't write a whole driver that implements read/write/etc.). Instead we use SCSITaskDeviceInterface functions from userland as described in Apple's SCSI Architecture Model Device Interface Guide "WorkingWithSAM.pdf" in order to implement a "SCSI pass-thru" functionality. No additional driver required. This email sent to site_archiver(a)lists.apple.com

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