May 2013 - Darwin-kernel - lists.apple.com

Re: Darwin
by Andrew Gallatin 20 May '13

20 May '13

Some corrections: On 05/20/2013 03:23 PM, Michael Crawford wrote: > The Darwin kernel is a massive fork of the FreeBSD kernel. Darwin has > the Mach microkernel statically linked in - not as a microkernel - to > enable Although it is a common misconception, the darwin kernel is most certainly not a fork of FreeBSD. It is a direct descendant of the NeXT kernel, which is a shotgun wedding of BSD and Mach (those were popular in the 90s, DEC Tru64 UNIX is another example) and it far pre-dates FreeBSD. The similarities between FreeBSD & MacOSX are mainly due to common BSD heritage, as well as some code ported between the two (kqueue, ipfw). They are more like second or 3rd cousins than siblings. > I should have said in my first reply that network drivers are not part > of the I/O Kit. They are written in C and work just like the FreeBSD > net drivers. Having written 10GbE drivers for both OSes, I can say with authority that this is totally & utterly false. Network device drivers are c++ in MacOSX, and C in FreeBSD, and use a totally different driver API (IOKit vs FreeBSD's own nameless API). Now, some of the core kernel structures are similar (ifnet, mbufs) but none are exposed directly to drivers in MacOSX, and the core things a driver has to do (configuration, interrupts, transmits, receives) are quite different between the two OSes. Drew _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Re: Darwin
by Alexander von Below 20 May '13

20 May '13

Am 20.05.2013 um 21:23 schrieb Michael Crawford <mdcrawford(a)gmail.com>: > Singh's book is very expensive - USD $110.00 I recall - but covers a lot of material you will never find anywhere else. Well, maybe it used to, but it is available for $50 on Kindle Alex _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Re: Darwin
by Michael Crawford 20 May '13

20 May '13

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Re: Darwin
by Alexander von Below 20 May '13

20 May '13

Amit Singh's "OS X Internals" is really the definite book on the matter. However, it does not really cover the Intel architecture. Personally, I find it is of limited practical use, but if you want an overview, that is where you should start. Anything else really depends on what you would like to do with that knowledge. All the best Alex Am 20.05.2013 um 18:22 schrieb Christ Levesque <iapplechocolate(a)me.com>: > Hi there, > > I'm an Apple developer since the first computer that my mom bought for me. Well, I'm an Apple developer since the first computer my mom bought for me. So, I wanna know more & more about Kernel object in OS X. Also, I wanna know about Darwin & gain my knowledge on it. I know tow books. First is iOS & OS X kernel programming & the second is OS X internals to Apple cores. Both of them are good but I wanna know more & from the scratch. What should I do? > > Down the hatch, > Muhammad. > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/darwin-kernel/below%40mac.com > > This email sent to below(a)mac.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Darwin
by Christ Levesque 20 May '13

20 May '13

Hi there, I'm an Apple developer since the first computer that my mom bought for me. Well, I'm an Apple developer since the first computer my mom bought for me. So, I wanna know more & more about Kernel object in OS X. Also, I wanna know about Darwin & gain my knowledge on it. I know tow books. First is iOS & OS X kernel programming & the second is OS X internals to Apple cores. Both of them are good but I wanna know more & from the scratch. What should I do? Down the hatch, Muhammad. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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