July 2005 - Darwin-dev - lists.apple.com

Re: Complex dynamic loading
by Markus Hitter 23 Jul '05

23 Jul '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Am 23.07.2005 um 03:57 schrieb Solra Bizna: >From what I understand, you can either create a module which you can dynamically load (.bundle) or one which you can dynamically link (.dylib), but not both. Also, will Darwin properly deal with modules that are both dynamically linked against other modules and dynamically loaded? HTH, Markus - - - - - - - - - - - - - - - - - - - Dipl. Ing. Markus Hitter http://www.jump-ing.de/ _______________________________________________ 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… >From what I understand, there's no difference between a library loaded automatically and one loaded explicitely. Both are loaded at runtime, anyways. The only difference seems to be the location of the Bundle (in the dynamic linker's default paths or not) and perhaps a flag in the Info.plist. For a high-level approach, see: <http://www.cocoadevcentral.com/ articles/000068.php>, for low level details, open your ADC Ref Lib (Xcode -> Help -> Documentation), then select the Darwin -> Runtime Architecture group (left pane). There's a document about dynamically loading code. The extension ".bundle" seems to be sticky in the Linux world, btw. "Bundle" is the name for a collection of files with a known hierarchy, nothing more. Typical examples are applications, frameworks, plugins, ... rarely they are actually named ".bundle", however. This email sent to site_archiver(a)lists.apple.com

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Re: Complex dynamic loading
by Solra Bizna 23 Jul '05

23 Jul '05

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:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=f/4FZ+Hd//7GPftFv3p/eb/ZeTtyETHCL/IZsc0Azy3X0FzhOYL9EgIeRWtd5J4mg2YkYzfgDbQrUxKnmabmhDYJCeWu2SVK8qZqs4L0Wa9pSrzbKB5g5LZvwZ1oCC3dtn9qslz56Ni2XCapBTbDrzclaykW7sJEFidpHcPR3P4= > I'm a bit confused here. On Darwin, if you build a .dylib you can > dynamically link against it or, if you haven't linked against it, load it > dynamically at runtime. Are you looking for some other functionality? I was under the impression that this wasn't possible on Darwin. From what I understand, you can either create a module which you can dynamically load (.bundle) or one which you can dynamically link (.dylib), but not both. Is it possible after all? Also, will Darwin properly deal with modules that are both dynamically linked against other modules and dynamically loaded? -:sigma.SB _______________________________________________ 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: Complex dynamic loading
by Eric Albert 23 Jul '05

23 Jul '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.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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Complex dynamic loading
by Solra Bizna 22 Jul '05

22 Jul '05

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:mime-version:content-type:content-transfer-encoding:content-disposition; b=oHVpWMOUUNjg+BwJXozXRqf/ZKMJNNLGZB7gfJrm1xY6TMAfecWhDEePIZcc+bNrdbrV9eCiZwIfSJZ4CcUCZeb04PHfA37mV5+Dy+TTh5vm0z3mISkStEZpbScvH5seyLvCr5By2RJgif+/gbHUswq0t58TrOh1WJqtp+YHtkA= I'm in charge of the development of an open source C++-based game engine. One of its features is extreme modularity, most of it (especially drivers) can be extended or replaced simply by adding a package. On Linux, this works well with almost no effort, as ld.so seems to properly handle and cache dependencies and such of both dynamically linked and dynamically loaded modules (even modules that are both). On Darwin, however, because a module can't be both dynamically linked and dynamically loaded, I don't see any simple solution that neither greatly complicates the port process and/or the build process nor wastes huge amounts of memory and disk space. Is there something simple I'm missing? -:sigma.SB _______________________________________________ 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: thread_policy_set starts to give errors...
by Marc Van Olmen 22 Jul '05

22 Jul '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Some wild thought: So I changed my code and now in the first line in my Thread cheers, mvo On Jul 22, 2005, at 4:23 PM, Marc Van Olmen wrote: chris, thx for you reaction I noticed that returned the value '64555' the mPThread seems to be having a normal value. cheers, mvo On Jul 22, 2005, at 1:29 PM, Chris Sarcone wrote: Marc -- This error corresponds to: -- Chris ------------------ 6 Infinite Loop M/S 306-2MS Cupertino CA 95014 phone: (408) 974-4033 fax: (408) 862-7577 email: sarcone(a)apple.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 create the thread like this: (This could also be called in thread so not only in the main loop.) theResult = pthread_create(&mPThread, NULL, (ThreadRoutine)cOS_Thread::Entry, this); Then right afterwards I set priority.... Could it maybe be to soon in certain circumstances for the mach kernel that I set the priority???? Thats what was my tought: I'm setting the priority and that seems so far to work fine. I just tested for about 20 minutes so not yet any longtime testing info yet. pthread_mach_thread_np(mPThread) The problem doesn't happens all the time so far it seems to be happen random. decimal 268435459 or in hex 0x10000003 <mach/message.h> #define MACH_SEND_INVALID_DEST 0x10000003 /* Bogus destination port. */ It appears the port for the pthread has possibly become invalid. Make sure your mPThread is valid and that pthread_mach_thread_np() returns a valid port. If those both seem OK, then file a bug with a test case that shows how this could occur. This email sent to site_archiver(a)lists.apple.com

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Re: thread_policy_set starts to give errors...
by Marc Van Olmen 22 Jul '05

22 Jul '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com chris, thx for you reaction I noticed that returned the value '64555' the mPThread seems to be having a normal value. cheers, mvo On Jul 22, 2005, at 1:29 PM, Chris Sarcone wrote: Marc -- This error corresponds to: -- Chris ------------------ 6 Infinite Loop M/S 306-2MS Cupertino CA 95014 phone: (408) 974-4033 fax: (408) 862-7577 email: sarcone(a)apple.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… pthread_mach_thread_np(mPThread) The problem doesn't happens all the time so far it seems to be happen random. decimal 268435459 or in hex 0x10000003 <mach/message.h> #define MACH_SEND_INVALID_DEST 0x10000003 /* Bogus destination port. */ It appears the port for the pthread has possibly become invalid. Make sure your mPThread is valid and that pthread_mach_thread_np() returns a valid port. If those both seem OK, then file a bug with a test case that shows how this could occur. This email sent to site_archiver(a)lists.apple.com

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Re: thread_policy_set starts to give errors...
by Chris Sarcone 22 Jul '05

22 Jul '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.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: how changing loginwindow in mac osX ?
by Garth Cummings 22 Jul '05

22 Jul '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.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 smime.p7s

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how changing loginwindow in mac osX ?
by Vincent WYON 22 Jul '05

22 Jul '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.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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thread_policy_set starts to give errors...
by Marc Van Olmen 22 Jul '05

22 Jul '05

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com hi, Has 10.3.9 changed something around this? Is there something wrong with this call? mPriority=48 mSpawningThreadPriority=0 and the error that I got back is decimal 268435459 or in hex 0x10000003 anyone idea what I'm missing here. regards, mvo _______________________________________________ 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… OS_Error anError = kOS_NoError; mPriority = inPriority; mTimeConstraintSet = false; mFixedPriority = inFixedPriority; if(mPThread != 0) { // We keep a reference to the spawning thread's priority around (initialized in the constructor), // and set the importance of the child thread relative to the spawning thread's priority. thread_precedence_policy_data_t thePrecedencePolicy; thePrecedencePolicy.importance = mPriority - mSpawningThreadPriority; BAIL_MSG_OSERROR(thread_policy_set( pthread_mach_thread_np(mPThread), THREAD_PRECEDENCE_POLICY, (thread_policy_t)&thePrecedencePolicy, THREAD_PRECEDENCE_POLICY_COUNT), "cOS_Thread::SetPriority: failed to set the precedence policy"); This calls gives errors, it was working fine 3 months ago, and I used this code for more then 7 months during that time. This email sent to site_archiver(a)lists.apple.com

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