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

Re: Resource Fork
by Chris Ridd 02 Nov '04

02 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Microsoft-Entourage/11.1.0.040913 On 2/11/04 1:19 pm, jerome morgado <jerome.morgado(a)mindscape.fr> wrote: > Hi, > > How can i have Resource Fork's Size with terminal ? > > I'm making a Web Application and i have to put the size for information. > I have a DB in wich i indexe all files. > > But all files with ressource fork have i wrong size because i only have > Data Fork ls -l file/that/I/am/interested/in/..namedfork/rsrc Look in the <system/paths.h> header... Cheers, Chris _______________________________________________ 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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Resource Fork
by jerome morgado 02 Nov '04

02 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hi, How can i have Resource Fork's Size with terminal ? I'm making a Web Application and i have to put the size for information. I have a DB in wich i indexe all files. Thx for Help _______________________________________________ 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… But all files with ressource fork have i wrong size because i only have Data Fork This email sent to site_archiver(a)lists.apple.com

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Re: PowerPC Time Base questions for Apple Computers
by Finlay Dobbie 02 Nov '04

02 Nov '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=Cq+Q3RpPaXCj2y+iUqn64Wui6b0OD3U2uJL2GFirJbAerLfPIW7how2ebEU9RFK+XBoL5dSWKDG/2q3uMFaGZsdn5khO9QRnYGuU8VNgMOu8JwY+CRfnnFRBKfLaDPlCv+Ghy1LR3O0scZ+3lTfEvauILpYbRx7Gzovh3pG+G9A= On Mon, 1 Nov 2004 16:47:24 -0800, Josh de Cesare <decesare(a)apple.com> wrote: > Martin, > The CHUD tools do make use of the performance monitoring > procedures. You might want to check out chud.apple.com. There > should be pointers there that will explain how to do what you want. > Josh There is no chud.apple.com - do you mean <http://developer.apple.com/tools/performance/>? -- Finlay _______________________________________________ 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: DS Help
by Jason Townsend 02 Nov '04

02 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com From: "Mr. Wong" <keilinw(a)hotmail.com> Hope that helps, -Jason _______________________________________________ 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 looking for some help with DS....I've been in contact with Finlay Dobie and he suggested I look here for Jason Townsend. Here is my problem... I've managed to do a dsDoAttributeValueSearch and pull some custom records / attributes of interest from the local NetInfo directory (by modifying the DSTestTool that came with the DS SDK). I've also managed to get "SOME" results from a a full blown LDAP server, but I'm having trouble specifying custom NODES with custom attributes.... .... I need to search a node with a cn = Persons... is there any easy way of doing this? Also how can I search for Custom attributes as opposed to standard or native. In general we encourage developers to use standard types. Native types should only be used as a last resort when a standard type is not available. In the case of LDAP, native record types are currently not supported. The mappings set up in Directory Access determine the search base, scope, and optionally a list of object classes to filter on, so it wasn't quite as straightforward to pass all that information through the native record type name as it is in NetInfo. Native attributes are supported on LDAP, these are simply the native prefix followed by the name of the attribute in LDAP (for example, what you would see in the output of ldapsearch). In the case of cn=Persons, I suspect that either you want to use the People record type which is for storing inetOrgPerson/Address Book types of information, or you want the Users record type which can include login information as well as the inetOrgPerson/Address Book information. I would recommend you map one of these record type. I'm not sure what you mean by "custom" attributes... the standard vs. native distinction is fairly straightforward. The standard attribute types are defined in the Directory Services headers and documentation, and represent a namespace which can be used across multiple directory systems. The native attributes are specific to a particular directory system (or even a particular node), and represent that specific namespace as it is actually stored. The various plug-ins have to map between the standard and native types. For LDAP, any attribute which has the native prefix is interpreted to mean exactly the attribute name that follows the prefix. P.S. Where is the easiest source for the mapping between Directory Services and LDAP.... I've been usiing the "Directory Access" utility.. Directory Access is the best tool to set up/inspect LDAP mappings at the moment. Is that what you were asking? This email sent to site_archiver(a)lists.apple.com

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Re: PowerPC Time Base questions for Apple Computers
by Josh de Cesare 02 Nov '04

02 Nov '04

site_archiver(a)lists.apple.com Delivered-To: Darwin-dev(a)lists.apple.com Dear Josh, Thank you very much for this information. I have an additional question that parallels the use of the cycle counter on later Intel and compatible microprocessos. Looking at the various PowerPC architecture manuals on the later chip versions there are some performance monitor counter registers like PMC1, etc. The event to monitor is set in the MMCR0 register and it can be the number of processor cycles. Several observations are immediate. It is only 32 bits, interrupts on overflow and to set the registers requires supervisor mode. Has Apple ever investigated trying to provide an interface to this feature to get even better timing resolution then the time base register method? If yes, what were the lessons? If no, why not? Sincerely, Martin Knapp-Cordes X-Original-To: Darwin-dev(a)lists.apple.com Delivered-To: Darwin-dev(a)lists.apple.com Mime-Version: 1.0 X-Sender: decesare(a)mail.apple.com To: Darwin-dev(a)lists.apple.com From: Josh de Cesare <decesare(a)apple.com> Cc: Subject: Re: PowerPC Time Base questions for Apple Computers X-BeenThere: darwin-dev(a)lists.apple.com X-Mailman-Version: 2.1.5 List-Id: "Technical discussion list for general Darwin software development. This does not include Carbon, Cocoa, or Darwin Streaming Server." <darwin-dev.lists.apple.com> List-Post: <mailto:darwin-dev@lists.apple.com> List-Help: <mailto:darwin-dev-request@lists.apple.com?subject=help> List-Subscribe: <http://lists.apple.com/mailman/listinfo/darwin-dev>, Martin, Hi, I am a developer at The MathWorks working on improving the precision and accuracy of our tic/toc functions in the MATLAB language. These functions are used for measuring elapsed wallclock time for for one or more operations in the MATLAB language. I am planning to use the following API to do elapsed timing: mach_absolute_time() mach_timebase_info() I have confirmed in my code so far that indeed on G5 desktops the update frequency is about 33MHz, and appears to be fixed. The frequency will always be fixed on a given system. sysctlbyname's hw.tbfrequency will give you the most accurate value known for the frequency. I have been looking at the Timer Facilities (Chapter 8) in Book E: Enhanced PowerPC Architecture published by IBM which is very interesting. Can anyone answer the following questions? 1. What clock mechanism (hardware/software) is driving the update of that register for Apple systems? What/who makes the decision that say on a G5 it is 33 MHz? On all G5 systems, the Time Base is driven off of an external 33 MHz clock. On older G4 system, the TB frequency is 1/4 of the bus frequency. On newer G4 systems, where the bus frequency could change, it is driven from an external clock at 18.432 MHz. 2. Is the update frequency constant on all Apple systems, or can it vary? We got burned recently on the Pentium M processor on Windows trying to use the CPU cycle counter. It is clearly not constant for those systems. Fortunately, Microsoft does provide an API that handles this problem. Are we going to run into a problem on say some Apple laptops where that interface above will not work? that it run at a fixed frequency. Sincerely, Martin Knapp-Cordes --------------------------------------------------------------- | Martin Knapp-Cordes martin(a)mathworks.com | | The MathWorks, Inc. http://www.mathworks.com | | 3 Apple Hill Drive Natick, MA 01760 | | Tel: (508) 647-7321 Fax: (508) 647-7015 | --------------------------------------------------------------- Josh _______________________________________________ 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/martin%40mathworks.com --------------------------------------------------------------- | Martin Knapp-Cordes martin(a)mathworks.com | | The MathWorks, Inc. http://www.mathworks.com | | 3 Apple Hill Drive Natick, MA 01760 | | Tel: (508) 647-7321 Fax: (508) 647-7015 | --------------------------------------------------------------- _______________________________________________ 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… Martin, The CHUD tools do make use of the performance monitoring procedures. You might want to check out chud.apple.com. There should be pointers there that will explain how to do what you want. Josh At 10:49 AM -0400 10/29/04, Martin Knapp-Cordes wrote: List-Unsubscribe: <http://lists.apple.com/mailman/listinfo/darwin-dev>, <mailto:darwin-dev-request@lists.apple.com?subject=unsubscribe> <mailto:darwin-dev-request@lists.apple.com?subject=subscribe> X-PMX-Version: 4.7.0.111621, Antispam-Engine: 2.0.2.0, Antispam-Data: 2004.10.28.1 X-OriginalArrivalTime: 28 Oct 2004 19:34:54.0493 (UTC) FILETIME=[3346BCD0:01C4BD25] At 12:13 PM -0400 10/28/04, Martin Knapp-Cordes wrote: >Since all of the Kernel's timing is based on this clock, we require Any help which be much appreciated. >> This email sent to martin(a)mathworks.com This email sent to site_archiver(a)lists.apple.com

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DS Help - Jason Townsed
by Mr. Wong 01 Nov '04

01 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hello everyone, Thanks for your help. --Matthew. _______________________________________________ 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 looking for some help with DS....I've been in contact with Finlay Dobie and he suggested I look here for Jason Townsend. Here is my problem... I've managed to do a dsDoAttributeValueSearch and pull some custom records / attributes of interest from the local NetInfo directory (by modifying the DSTestTool that came with the DS SDK). I've also managed to get "SOME" results from a a full blown LDAP server, but I'm having trouble specifying custom NODES with custom attributes.... .... I need to search a node with a cn = Persons... is there any easy way of doing this? Also how can I search for Custom attributes as opposed to standard or native. P.S. Where is the easiest source for the mapping between Directory Services and LDAP.... I've been usiing the "Directory Access" utility.. This email sent to site_archiver(a)lists.apple.com

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Re: mach_port_deallocate(kernel_thread) failed: (os/kern) invalid
by Paul Forgey 01 Nov '04

01 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com If I may butt in here, your program is not doing what you think it is. Like I told you when we were talking about this last month, threads need to be joined or detached. There are three ways to release these resources being taken up by a thread, and all are mutually exclusive: Create it detached Detach it Join in. Pick one. It's important to do exactly one of these things with your thread, or you will leak memory. It sounds likely to me that you aren't pthread_join()'ing a valid thread handle? That would explain both the kernel warnings and the fact a pthread_detach() is needed despite your pthread_join() call to release the extra memory. At any rate, if your testing indicates otherwise, then you have a bug in your program that is causing it to not join where, when or what you think it is. ----- Original Message ----- From: "Marc Van Olmen" <marc(a)sky4studios.be> To: "Matt Watson" <mwatson(a)apple.com> Cc: <darwin-dev(a)lists.apple.com> Sent: Sunday, October 31, 2004 8:03 PM Subject: Re: mach_port_deallocate(kernel_thread) failed: (os/kern) invalid On Oct 31, 2004, at 10:43 PM, Matt Watson wrote: Matt, My tests do NOT justify what you are writing here. If I remove the pthread_detach after the pthread_join. I notice that my virtual memory (checking with Activity monitor) is growing.... because doing this pthread_join 2000 times in this manner my program stopped working because no more memory available and virtual memory of my app growed to 4GB. When I added the follwing: if (mThread) { pthread_detach(mThread); } I need the join so the PTHREAD_CREATE_DETACHED wasn't an option. I had no more crashes, no more virtual memory leaks and no errors anymore in the console, after testing for a long time. _______________________________________________ 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: mach_port_deallocate(kernel_thread) failed: (os/kern) invalid
by Marc Van Olmen 01 Nov '04

01 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Oct 31, 2004, at 10:43 PM, Matt Watson wrote: Matt, if (mThread) { pthread_detach(mThread); } I need the join so the PTHREAD_CREATE_DETACHED wasn't an option. http://www.awprofessional.com/title/0201633922 _______________________________________________ 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… Then the real problem was that you were calling pthread_join on a (potentially) non-existent thread. You want to either pthread_detach, or pthread_join, not both. Both of these will reclaim the thread's resources, with pthread_join providing a rudimentary synchronization mechanism. Also, your fix still has a bug, since now you're calling pthread_detach on a non-existent thread. Very much appreciated your thoughts on this!. (this issue we discussed before, but after long testing I ran in the problems described in first e-mail of this e-mail thread). My tests do NOT justify what you are writing here. If I remove the pthread_detach after the pthread_join. I notice that my virtual memory (checking with Activity monitor) is growing.... because doing this pthread_join 2000 times in this manner my program stopped working because no more memory available and virtual memory of my app growed to 4GB. When I added the follwing: I had no more crashes, no more virtual memory leaks and no errors anymore in the console, after testing for a long time. I haven't read the book that you are recommending, i got the o-reily one. But I will put this book on my christmas shopping list. Also, if you know you're going to detach the thread, and don't need the join synchronization, you should just create it with the PTHREAD_CREATE_DETACHED attribute and avoid calling pthread_detached. These and other pthreads concepts are explained in any good pthreads reference. I usually recommend David Butenhof's _Programming_with_POSIX(R)_Threads_: matt. This email sent to site_archiver(a)lists.apple.com

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Re: mach_port_deallocate(kernel_thread) failed: (os/kern) invalid
by Matt Watson 01 Nov '04

01 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Oct 31, 2004, at 5:40 PM, Marc Van Olmen wrote: http://www.awprofessional.com/title/0201633922 matt. _______________________________________________ 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 problem was related to the fact that I called pthread_detach at the end of the feeder thread routine. Also I was waiting with pthread_join until the thread was finished. So if I called the pthread_detach after the pthread_join everything was fine and also all the resources were deleted. Then the real problem was that you were calling pthread_join on a (potentially) non-existent thread. You want to either pthread_detach, or pthread_join, not both. Both of these will reclaim the thread's resources, with pthread_join providing a rudimentary synchronization mechanism. Also, your fix still has a bug, since now you're calling pthread_detach on a non-existent thread. Also, if you know you're going to detach the thread, and don't need the join synchronization, you should just create it with the PTHREAD_CREATE_DETACHED attribute and avoid calling pthread_detached. These and other pthreads concepts are explained in any good pthreads reference. I usually recommend David Butenhof's _Programming_with_POSIX(R)_Threads_: This email sent to site_archiver(a)lists.apple.com

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Re: mach_port_deallocate(kernel_thread) failed: (os/kern) invalid
by Marc Van Olmen 01 Nov '04

01 Nov '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com hi, just posting the solution for the archive. regards, mvo On Oct 31, 2004, at 3:03 PM, darwin-dev-request(a)lists.apple.com wrote: When I do: pthread_join(mPThread,NULL); on my thread the pThread-join ends but in the console I see this appearing: mach_port_deallocate(kernel_thread) failed: (os/kern) invalid name anyone an idea what's going on? Also i noticed that when i do when I do: AudioOutputUnitStop(fOutputAudioUnit); I notice that the console is giving the following error: mach_port_mod_refs(reply_port) failed: (os/kern) invalid name in the debugger console. Should i be worried? I'm just trying to stop the audio from playing. _______________________________________________ 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 problem was related to the fact that I called pthread_detach at the end of the feeder thread routine. Also I was waiting with pthread_join until the thread was finished. So if I called the pthread_detach after the pthread_join everything was fine and also all the resources were deleted. This email sent to site_archiver(a)lists.apple.com

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