July 2009 - Darwin-dev - lists.apple.com

Re: Filling in a struct timespec with the current date?
by Terry Lambert 28 Jul '09

28 Jul '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Jean-Daniel Dupas wrote on Tuesday, July 28, 2009 12:52 PM Le 28 juil. 09 à 18:42, Karan, Cem (Civ, ARL/CISD) a écrit : current date (sec & nanosec). Is there a function call that I can call that will do so, or do I have to roll my own? Note that I'm looking for an API that will fill in a timespec that I pass in, not create a new one on the heap. You can wrap your own using gettimeofday() which does what you want but using a timeval instead of a timespec. ERROR_CODE initWithCurrentDate(&myTimeSpec); -- 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 Jul 28, 2009, at 10:07 AM, Kevin Van Vechten <kvv(a)apple.com> wrote: On Jul 28, 2009, at 9:57 AM, Karan, Cem (Civ, ARL/CISD) wrote: I'm trying to use struct timespec, and I want to initialize it to the Yeah, that is what I'm doing now; I was hoping there was a cleaner way, something along the lines of: If there isn't, then such is life; I'll continue using what gettimeofday(). Wrapping gettimeofday(3) is the way to go. There is a POSIX REALTIME interface clock_gettime(3) that returns a struct timespec, but Mac OS X does not implement these optional interfaces. Or if he needs better resolution, mach_absolute_time(), which is well documented at <http://developer.apple.com>. Even if we did a clock_gettime(), you'd need to call clock_getres() to get the resolution, and like gettimeofday(), there's no guarantee that just because the structure is capable of representing a resolution that that's the resolution you'd get. I could give you the interface tomorrow, but depending on the resolution I picked, it could be worse than gettimeofday() while still being technically standards compliant. Without the rest of the [TMR] functionality, though, the feature test macro from <unistd.h> that would let you use the interface safely in the knowledge it was compliant would still claim it wasn't there. The only guaranteed resolution is going to be if you call mach_absolute_time() and then do the numerator/denominator math via the contents of the mach_timebase_info structure (i.e. you can not assume it is in nanoseconds or that the value is 1/1, particularly for hardware clocked at less than 1GHz, for example, an iPhone). In general, timespec is mostly useful as a parameter to things like pselect to contain delta times, rather than useful for times since the epoch, and for measuring time, for example for benchmarking a new version of your code against the previous version of your code to check for regressions, you probably want better resolution than you'll get from gettimeofday(). This email sent to site_archiver(a)lists.apple.com

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Re: Filling in a struct timespec with the current date?
by Kevin Van Vechten 28 Jul '09

28 Jul '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Jul 28, 2009, at 9:57 AM, Karan, Cem (Civ, ARL/CISD) wrote: Jean-Daniel Dupas wrote on Tuesday, July 28, 2009 12:52 PM Le 28 juil. 09 à 18:42, Karan, Cem (Civ, ARL/CISD) a écrit : current date (sec & nanosec). Is there a function call that I can call that will do so, or do I have to roll my own? Note that I'm looking for an API that will fill in a timespec that I pass in, not create a new one on the heap. You can wrap your own using gettimeofday() which does what you want but using a timeval instead of a timespec. ERROR_CODE initWithCurrentDate(&myTimeSpec); Kevin _______________________________________________ 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'm trying to use struct timespec, and I want to initialize it to the Yeah, that is what I'm doing now; I was hoping there was a cleaner way, something along the lines of: If there isn't, then such is life; I'll continue using what gettimeofday(). Wrapping gettimeofday(3) is the way to go. There is a POSIX REALTIME interface clock_gettime(3) that returns a struct timespec, but Mac OS X does not implement these optional interfaces. This email sent to site_archiver(a)lists.apple.com

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RE: Filling in a struct timespec with the current date?
by Karan, Cem (Civ, ARL/CISD) 28 Jul '09

28 Jul '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: AcoPo9Id1+H3SMJ4S8q2LQB8q2B+zgAAAtrg Thread-topic: Filling in a struct timespec with the current date? Jean-Daniel Dupas wrote on Tuesday, July 28, 2009 12:52 PM > Le 28 juil. 09 à 18:42, Karan, Cem (Civ, ARL/CISD) a écrit : > > > I'm trying to use struct timespec, and I want to initialize > it to the > > current date (sec & nanosec). Is there a function call that I can > > call that will do so, or do I have to roll my own? Note that I'm > > looking for an API that will fill in a timespec that I pass in, not > > create a new one on the heap. > > > You can wrap your own using gettimeofday() which does what > you want but using a timeval instead of a timespec. Yeah, that is what I'm doing now; I was hoping there was a cleaner way, something along the lines of: ERROR_CODE initWithCurrentDate(&myTimeSpec); If there isn't, then such is life; I'll continue using what gettimeofday(). Thanks, Cem Karan _______________________________________________ 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: Filling in a struct timespec with the current date?
by Jean-Daniel Dupas 28 Jul '09

28 Jul '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Le 28 juil. 09 à 18:42, Karan, Cem (Civ, ARL/CISD) a écrit : _______________________________________________ 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'm trying to use struct timespec, and I want to initialize it to the current date (sec & nanosec). Is there a function call that I can call that will do so, or do I have to roll my own? Note that I'm looking for an API that will fill in a timespec that I pass in, not create a new one on the heap. You can wrap your own using gettimeofday() which does what you want but using a timeval instead of a timespec. This email sent to site_archiver(a)lists.apple.com

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Filling in a struct timespec with the current date?
by Karan, Cem (Civ, ARL/CISD) 28 Jul '09

28 Jul '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: AcoPomaOp0FenqvISxW70Df+8up4og== Thread-topic: Filling in a struct timespec with the current date? I'm trying to use struct timespec, and I want to initialize it to the current date (sec & nanosec). Is there a function call that I can call that will do so, or do I have to roll my own? Note that I'm looking for an API that will fill in a timespec that I pass in, not create a new one on the heap. Thanks, Cem Karan _______________________________________________ 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: Crashreport for iPhone apps
by Alexander von Below 25 Jul '09

25 Jul '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Alex Am 25.07.2009 um 14:58 schrieb Arnab Ganguly: _______________________________________________ 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… You should find them in your iTunes Connect account for those users who allowed them to be transmitted Hi All, Do we have any iPhone app at present which reports the crash for iPhone apps specially with iPhone OS 3.0 version.? Thanks in advance. Arnab _______________________________________________ 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/below%40mac.com This email sent to below(a)mac.com This email sent to site_archiver(a)lists.apple.com

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Crashreport for iPhone apps
by Arnab Ganguly 25 Jul '09

25 Jul '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:date:message-id:subject :from:to:content-type; bh=w7N+1dIIrYa/sMzV9+lHMM2r5lU8iLXHWy5EOXiGjgo=; b=Y4x1dNjhKgXsXd+Ozgs/31gM/33BObfI2Tx82dtLEqUGV6YXSfSDPjJJESs79xXLES zEwh1X/+fL6PC9ynyrQUobJeV0kaBKaUofkGk+f1+TmurYmb0n7LSfCd3zXfV7UhzQJ+ 2nCmKDtABjj0Xq7+jeOtQEXenTrpNcghG/kEg= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=KSIc0oxOMw96lPK2it/xZEMQ/4im9vi1sdAT56KdD+XEVs+MyQJHDmJKJsCOrstqLN v5vp/nCfmDqvqxg5TCbazSFPv64z98Yo3H3eoxJliSZmOCKRwWdovrC94deKqBNNapNl WOyFHKZ80Aqz9trbnpGfdFf+dI8YofDu+jDNQ= _______________________________________________ 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: Sending SCSI commands in Mac OS X
by mlists＠ugsoft.de 24 Jul '09

24 Jul '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha1; c=relaxed/relaxed; t=1248430716; l=3621; s=domk; d=ugsoft.de; h=References:Date:Subject:Mime-Version:Content-Transfer-Encoding: Content-Type:In-Reply-To:To:From:Cc:X-RZG-CLASS-ID:X-RZG-AUTH; bh=/jz1jB20oyWv2XXjuoUBz2aOW2k=; b=JizekzTgi/mI0kXd360XsIMHTFadWjVv/CE6gXF2IG9gT0uSuhv5TPvpiEjrrEjoWPu 9hoEdLTjgcPjOHUNp4BbfsDQxXMuti8vA85mq8i2jzNYRmyUV74yLNQ0rc9IkwAV3nVBn A/S+psDKoVVZcriLfZTpUS0zSlsE0lPEd6E= Am 24.07.2009 um 05:55 schrieb Terry Lambert: Since no one else posted... I thought I've missed something ;-) Uwe Rohan: This means "no, you can not use an ioctl". -- Terry 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… Apparently the last machine I used had your tools installed on, which generated BSD device stubs for my QIC tape drive when I plugged it it. 8-). Ok. What we are doing with our tools is to create pseudo device files in /etc/UGSdev, e.g. /etc/UGSdev/nst0, which can be passed as remote devices (e.g. 127.0.0.1:/etc/UGSdev/nst0) to command line tools such as tar, xtar, dump/restore, mt, etc., so that our rmt will communicate with the SCSI, FireWire, USB and FibreChannel tape/changer devices. Please take a look at http://www.ugsoft.de/intl/faq.html#xtarntape for more information on that. For those who are interested: The tools esbdump, esbrestore, esbmt, rmt and the smtc tape device "driver" are free to use and are included in ES-Backup http://www.ugsoft.de/intl/esbackup . No registration nor activation keys required to use the shell commands. See included License document. Since no source code is included one won't be able to learn how to do the SCSI programming on OS X, though. In addition to the functionality of the corresponding Unix tools such as the standard dump tape format, our tools offer support for Mac OS X file attributes, resource forks, etc., as well as direct tape positioning during restore which make them usefull for today's large amounts of backup data. Also, these tools are used in our commercial product ES-Backup on Mac OS X Intel and PPC, Solaris SPARC and x86, Linux x86 - but this is off-topic. The officially supported interface is SCSITaskDeviceInterface, from a user client. Sorry for the confusion. On Jul 23, 2009, at 7:04 AM, mlists(a)ugsoft.de wrote: Am 23.07.2009 um 13:26 schrieb Terry Lambert: 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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Re: Sending SCSI commands in Mac OS X
by Joel Reymont 24 Jul '09

24 Jul '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:received:received:cc:message-id:from:to :in-reply-to:content-type:content-transfer-encoding:mime-version :subject:date:references:x-mailer; bh=cBKcRH9JLxQkju+pmzT1Aj8y7qeKp2JvWuPOCKQHsmw=; b=qFrylcINDevo8pRR1HvZ8q1ZHddsUXiIQ0DOZkTcMxV0SDs6UD49cdX965abWpemes TWNExdlWwe591T1iUdZ/Z97mkRvG/5x7b5GaXPlX68HN61lWTX8a3dryIGj2NI6woFME LKLO+S4+wOAmiAyuUKVsyH8EeJr4sTSRBEHB0= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=cc:message-id:from:to:in-reply-to:content-type :content-transfer-encoding:mime-version:subject:date:references :x-mailer; b=p0dyjEyNK7FiuqEIutcuo3Z53GOs73GSy6vITFLD6+i0Xdw49dZHeIR2fmImq727rO ONRrF8jrsG2QqLZxHpKjUsvJU7hPDm+XlEtFss8CRMjt7ZdlV5pqiuca9npsi4SsOiCX j1cRtpDv7ktCHWVF76IkwL5GMBL2gkL0IgSeI= Maybe this will help: http://tinyco.de/2009/02/04/writing-a-mac-osx-usb-device-driver-with-scsi-p… On Jul 24, 2009, at 4:55 AM, Terry Lambert wrote: --- Mac hacker with a performance bent http://www.linkedin.com/in/joelreymont _______________________________________________ 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 officially supported interface is SCSITaskDeviceInterface, from a user client. Sorry for the confusion. 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 24 Jul '09

24 Jul '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Since no one else posted... Rohan: This means "no, you can not use an ioctl". -- Terry 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… Apparently the last machine I used had your tools installed on, which generated BSD device stubs for my QIC tape drive when I plugged it it. 8-). The officially supported interface is SCSITaskDeviceInterface, from a user client. Sorry for the confusion. On Jul 23, 2009, at 7:04 AM, mlists(a)ugsoft.de wrote: Am 23.07.2009 um 13:26 schrieb Terry Lambert: 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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