December 2004 - Darwin-dev - lists.apple.com

Digital Voltage Scaling (PowerTune)
by Drew Varner 31 Dec '04

31 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hey Folks, 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… I am interested in exploiting the PowerTune capabilities of the new G5 in Xserve, iMacs, etc. Linux provides access to these capabilities via a kernel module (cpufreq). I have Googled the topic and I haven't found any Digital Voltage Scaling (DVS) implementations for Darwin/OS X. I'd like to know if anyone is interested in working on it. My research group (http://scape.cse.sc.edu) has done work work with the Linux implementations of DVS. I don't know if this is something that belongs in the kernel as a driver or as a command line utility of some sort. I'd really like to see a Darwin implementation that parallels the cpufreq implementation (they use sysfs for a userspace interface) for cross-platform compatibility. This email sent to site_archiver(a)lists.apple.com

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Re: Stack trace queryable?
by Geoffrey Schmit 29 Dec '04

29 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On 27/12/2004 at 8:08 PM, support(a)monkeybreadsoftware.de (Christian Schmitz) wrote: > can a function get the list of which functions called itself for debug > purpose? > > You see a stack trace in the crash report every time so I ask > myself if this list of function names can be queried inside a > thread so I could add it to an exception object. MoreBacktrace does: <http://developer.apple.com/samplecode/MoreIsBetter/listing41.html> geoff -- Geoffrey Schmit Senior Software Engineer National Instruments geoffrey.schmit(a)ni.com www.ni.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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Problems with multiple subclasses of IOAudioEngine
by Andrew White 28 Dec '04

28 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla Thunderbird 0.9 (Macintosh/20041103) I'm having problems with subclassing IOAudioEngine... In .h: class MyAbstractAudioEngine : public IOAudioEngine { OSDeclareAbstractStructors (MyAbstractAudioEngine) } In .cpp OSDefineMetaClassAndAbstractStructors (MyAbstractAudioEngine, IOAudioEngine) In .h class MyAudioEngine : public MyAbstractAudioEngine { OSDeclareDefaultStructors (MyAudioEngine) } In .cpp OSDefineMetaClassAndStructors (MyAudioEngine, MyAbstractAudioEngine) Any thoughts or suggestions? -- Andrew White _______________________________________________ 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… All compiles fine. But after I load it, the engine doesn't seem to be found (by HALLab at least). And when I try to unload it, it fails, with an error complaining that there is 1 instance of both MyAudioEngine and MyAbstractAudioEngine. This seems suspicious to me. The shouldn't be an instance of MyAbstractAudioEngine - it's abstract. I'm wondering if the reference counting is getting messed up somewhere. This email sent to site_archiver(a)lists.apple.com

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Re: Packet Socketing Equivalent in OS X?
by Justin Walker 28 Dec '04

28 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Dec 23, 2004, at 17:24, Paul Forgey wrote: Does that mean this quote from the man page is in error? Regards, Justin -- /~\ The ASCII Justin C. Walker, Curmudgeon-at-Large \ / Ribbon Campaign X Help cure HTML Email / \ _______________________________________________ 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… A packet can be sent out on the network by writing to a bpf file descrip- tor. The writes are unbuffered, meaning only one packet can be processed per write. Currently, only writes to Ethernets and SLIP links are sup- ported. As Jordan admitted (:-}), it is not in error. FWIW, you can find code that uses BPF for reading and writing in the bootp project in the Darwin repository (see <http://developer.apple.com/darwin>). Look for IPConfiguration and bootplib. I also have a need to write raw IP packets (as well as read them independent of interface hardware). I'm finding that raw sockets do not behave at all as documented. Is there a resource somewhere that explains how they really work on Darwin/Mac-OS? The best source is the source :-}. What are you trying to do, and what isn't working (and what documents are you reading)? This email sent to site_archiver(a)lists.apple.com

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Stack trace queryable?
by support＠monkeybreadsoftware.de 27 Dec '04

27 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: MacSOUP/D-2.6 (Mac OS X version 10.3.7) Hi, can a function get the list of which functions called itself for debug purpose? You see a stack trace in the crash report every time so I ask myself if this list of function names can be queried inside a thread so I could add it to an exception object. Mfg Christian -- Nine thousand functions in one REALbasic plug-in. The MBS Plugin. <http://www.monkeybreadsoftware.de/realbasic/plugins.html> _______________________________________________ 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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Cache Inhibited Memory for Userland Programs
by Daniel Hedin 25 Dec '04

25 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: SquirrelMail/1.4.3a Is there any way for me to play with the page attributes provided by the PowerPCs (in particular cache inhibition) in a userland process. I'd like to be abe to allocate non-cached memory in an ordinary program. regards Daniel _______________________________________________ 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: Packet Socketing Equivalent in OS X?
by Giuliano Gavazzi 24 Dec '04

24 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com At 7:43 pm -0800 2004/12/23, Ness wrote: sorry, but you could also learn to snip inessential bits... m.xmas _______________________________________________ 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… [huge cut] Speaking of learning something new, I just found out you founded FreeBSD. Please excuse my newbie-ishness, I am a Windows convert. Thanks a lot guys. This email sent to site_archiver(a)lists.apple.com

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Re: Packet Socketing Equivalent in OS X?
by David Leimbach 24 Dec '04

24 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:references; b=Y+5TYLR/iG36LH1B2j0iF4Amw/Ph0bf4DHbUhJFuhNFc8Va2oUUe3qUwaX1MizD7RCxjJQKr/jv5H2HDNRf7fQEcrVhVxNHtd6PvCEq3Xp52KgdxnJZZlPEc86HSkzmrf3bdY5HTOOtrviOKL/bngk1rpnjJjFTxb1R55XvXUq0= > > > Speaking of learning something new, I just found out you founded > FreeBSD. Please excuse my newbie-ishness, I am a Windows convert. > > Thanks a lot guys. Bah, he's still a punk! *runs away!!!* :) Merry Christmas. Dave > > ness > _______________________________________________ > 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/leimy2k%40gmail.com > > This email sent to leimy2k(a)gmail.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: Packet Socketing Equivalent in OS X?
by Ness 24 Dec '04

24 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla Thunderbird 0.8 (Macintosh/20040913) Jordan Hubbard wrote: - Jordan On Dec 23, 2004, at 5:24 PM, Paul Forgey wrote: Does that mean this quote from the man page is in error? On Dec 23, 2004, at 5:19 PM, Jordan Hubbard wrote: On Dec 23, 2004, at 5:15 PM, Ness wrote: You cannot write to BPF. Merry Christmas. :-) - Jordan _______________________________________________ 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/jkh%40apple.com This email sent to jkh(a)apple.com -- Jordan K. Hubbard Engineering Manager, BSD technology group Apple Computer _______________________________________________ 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/nessup%40cox.net This email sent to nessup(a)cox.net Thanks a lot guys. ness _______________________________________________ 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 think I'll have to eat my words here (sorry, Ness). It looks like you can indeed write to a bpf device - how about that, you learn something new every day. I determined this by simply reading the source code, and there is indeed a bpfwrite() routine declared in bpf's cdevsw entry. Looks like it just whacks the data provided right onto the network. A packet can be sent out on the network by writing to a bpf file descrip- tor. The writes are unbuffered, meaning only one packet can be processed per write. Currently, only writes to Ethernets and SLIP links are sup- ported. I also have a need to write raw IP packets (as well as read them independent of interface hardware). I'm finding that raw sockets do not behave at all as documented. Is there a resource somewhere that explains how they really work on Darwin/Mac-OS? opens successfully. PLEASE tell me I can write to BPF. _______________________________________________ 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/ paulf%40aphrodite.com This email sent to paulf(a)aphrodite.com Speaking of learning something new, I just found out you founded FreeBSD. Please excuse my newbie-ishness, I am a Windows convert. This email sent to site_archiver(a)lists.apple.com

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Re: Packet Socketing Equivalent in OS X?
by Jordan Hubbard 24 Dec '04

24 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com - Jordan On Dec 23, 2004, at 5:24 PM, Paul Forgey wrote: Does that mean this quote from the man page is in error? On Dec 23, 2004, at 5:19 PM, Jordan Hubbard wrote: You cannot write to BPF. Merry Christmas. :-) - Jordan _______________________________________________ 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/jkh%40apple.com This email sent to jkh(a)apple.com -- Jordan K. Hubbard Engineering Manager, BSD technology group Apple Computer _______________________________________________ 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 think I'll have to eat my words here (sorry, Ness). It looks like you can indeed write to a bpf device - how about that, you learn something new every day. I determined this by simply reading the source code, and there is indeed a bpfwrite() routine declared in bpf's cdevsw entry. Looks like it just whacks the data provided right onto the network. A packet can be sent out on the network by writing to a bpf file descrip- tor. The writes are unbuffered, meaning only one packet can be processed per write. Currently, only writes to Ethernets and SLIP links are sup- ported. I also have a need to write raw IP packets (as well as read them independent of interface hardware). I'm finding that raw sockets do not behave at all as documented. Is there a resource somewhere that explains how they really work on Darwin/Mac-OS? On Dec 23, 2004, at 5:15 PM, Ness wrote: opens successfully. PLEASE tell me I can write to BPF. _______________________________________________ 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/ paulf%40aphrodite.com This email sent to paulf(a)aphrodite.com This email sent to site_archiver(a)lists.apple.com

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