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

Re: static initializers do not get run in dylibs with gcc 3.3
by Jerry Pendergraft 06 Dec '04

06 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Perhaps this is way too simple, but in your example there is no reference to myClass other than its declaration. Is it possibly the compiler recognized that and "optimized" the code away? -- Jerry Pendergraft jerry.pendergraft(a)endocardial.com Endocardial Solutions voice: 651-523-6935 1350 Energy Lane, Suite 110 fax: 651-644-7897 St Paul, MN 55108-5254 mobile: 651-491-0163 On Mon, 6 Dec 2004, Jan Hardenbergh wrote: > I am having a problem with static initializers. This problem is well documented if you Google: > "mac osx gcc static initializers" or variations. It works on about 1/4 of the classes. I cannot > discern which ones it will or will not work with. The static is instantiated if I call hackMyClass() > > My flavor of the Problem is > > class MyClass { > MyClass() > { > do some init > } > ... > } > > static MyClass myClass; > > hackMyClass() { return; } > > This works on Linux with gcc 3.3, MSVC++, and Solaris. > > This was rumored to have been fixed with GCC 3.3, but, it is not for me. I have tried all fo the link flags that seemed to make any sense. > > Any ideas? > > YON - Jan C. Hardenbergh > > > > _______________________________________________ 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: gettimeofday() seems to return local time
by Mike Smith 06 Dec '04

06 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com I'm using gettimeofday(), on OS X 10.3.6, to get the time resolution I need (milliseconds). If I'm reading the documentation right, I should be getting time in UTC. However, I'm getting local time. No. Check that you have correctly set the timezone. Try comparing the output of # date and # date -u The system call gettimeofday(2) should behave consistently across all MacOS X versions. Given that the gettimeofday(2) interface dates from 4.2BSD and with the exception of the removal of timezone information has remained unchanged for more than a decade, I find it highly unlikely. = Mike _______________________________________________ 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… Should gettimeofday() return local time? to make sure that the system has an idea of local time that varies from UTC. Will it work the same on all Macs? Will it change with future releases of OS X? This email sent to site_archiver(a)lists.apple.com

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static initializers do not get run in dylibs with gcc 3.3
by Jan Hardenbergh 06 Dec '04

06 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: AcTbs0U2zgASNRVcQJ6BMMuknDhr/w== Thread-topic: static initializers do not get run in dylibs with gcc 3.3 _______________________________________________ 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: Is 'bash' REALLY the default shell in 10.3 (Panther)?
by Jordan Hubbard 05 Dec '04

05 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com - Jordan On Dec 4, 2004, at 8:29 PM, Kevin Van Vechten wrote: - Kevin On Dec 4, 2004, at 3:59 AM, Martin Costabel wrote: William C. McCain wrote: -- Martin _______________________________________________ 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 _______________________________________________ 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… That was in Jaguar, actually. In Panther, bash became the default user shell instead of tcsh. Also, /bin/sh changed to bash in Panther, instead of zsh (I believe) in previous releases. Is 'bash' REALLY the default shell in 10.3 (Panther)? My 10.3 iMac defaults to the 'tcsh' shell. But all your documentation, and all the third-part books, say it should be 'bash'. Did you change your minds, or is this because my iMac was originally sold with 10.2 installed and was later upgraded to 10.3? (I never used Terminal until after the 10.3 upgrade, and I have never changed the shell.) "Default shell" is the shell that newly created users get. If you created your account on 10.2 and didn't change it, you have the default shell from that OS version. Run "chsh" or Netinfo Manager.app if you want to change it. _______________________________________________ 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/ kevin%40opendarwin.org This email sent to kevin(a)opendarwin.org This email sent to jkh(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Re: Is 'bash' REALLY the default shell in 10.3 (Panther)?
by Kevin Van Vechten 05 Dec '04

05 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com - Kevin On Dec 4, 2004, at 3:59 AM, Martin Costabel wrote: William C. McCain wrote: _______________________________________________ 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… Also, /bin/sh changed to bash in Panther, instead of zsh (I believe) in previous releases. Is 'bash' REALLY the default shell in 10.3 (Panther)? My 10.3 iMac defaults to the 'tcsh' shell. But all your documentation, and all the third-part books, say it should be 'bash'. Did you change your minds, or is this because my iMac was originally sold with 10.2 installed and was later upgraded to 10.3? (I never used Terminal until after the 10.3 upgrade, and I have never changed the shell.) "Default shell" is the shell that newly created users get. If you created your account on 10.2 and didn't change it, you have the default shell from that OS version. Run "chsh" or Netinfo Manager.app if you want to change it. -- Martin _______________________________________________ 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/ kevin%40opendarwin.org This email sent to kevin(a)opendarwin.org This email sent to site_archiver(a)lists.apple.com

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Re: Is 'bash' REALLY the default shell in 10.3 (Panther)?
by Martin Costabel 04 Dec '04

04 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 William C. McCain wrote: -- Martin _______________________________________________ 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… Is 'bash' REALLY the default shell in 10.3 (Panther)? My 10.3 iMac defaults to the 'tcsh' shell. But all your documentation, and all the third-part books, say it should be 'bash'. Did you change your minds, or is this because my iMac was originally sold with 10.2 installed and was later upgraded to 10.3? (I never used Terminal until after the 10.3 upgrade, and I have never changed the shell.) "Default shell" is the shell that newly created users get. If you created your account on 10.2 and didn't change it, you have the default shell from that OS version. Run "chsh" or Netinfo Manager.app if you want to change it. This email sent to site_archiver(a)lists.apple.com

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Is 'bash' REALLY the default shell in 10.3 (Panther)?
by William C. McCain 04 Dec '04

04 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7.3) Gecko/20040910 Bill _______________________________________________ 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… Is 'bash' REALLY the default shell in 10.3 (Panther)? My 10.3 iMac defaults to the 'tcsh' shell. But all your documentation, and all the third-part books, say it should be 'bash'. Did you change your minds, or is this because my iMac was originally sold with 10.2 installed and was later upgraded to 10.3? (I never used Terminal until after the 10.3 upgrade, and I have never changed the shell.) This email sent to site_archiver(a)lists.apple.com

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RE: gettimeofday() seems to return local time
by Michael Rubinstein 03 Dec '04

03 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Importance: Normal Noah and group, You're right, it does return UTC. You're also right about why I thought I was getting local time. I was "doing something stupid when you determine what time those seconds represent". I really appreciate everyone's help. Sorry about the incorrect report. Michael >-----Original Message----- >From: noah williamsson [mailto:noah@hd.se] >Sent: Friday, December 03, 2004 11:18 AM >To: Michael Rubinstein >Cc: darwin-dev(a)lists.apple.com >Subject: Re: gettimeofday() seems to return local time > > >Hi Michael, > >Michael Rubinstein wrote: > > I'm using gettimeofday(), on OS X 10.3.6, to get the time >resolution I > > need (milliseconds). > > > > If I'm reading the documentation right, I should be >getting time in > > UTC. However, I'm getting local time. > >Gettimeofday() with NULL as second argument always returns >time in UTC. >If it does not, either the clock and timezone on your >machine is wrong >or you're doing something stupid when you determine what time those >seconds represent. Like using ctime() for example, which >prints the time >according to the local timezone. > > >The man page for gettimeofday() on 10.3.6 also says this about the >second argument: > "Note: timezone is no longer used; this information is >kept outside > the kernel." >I assume they want you to use tzset() and functions from >time.h instead. > > >On a sidenote, there was a bug before 10.3 where chrooted processes >weren't able to determine the local time correctly even >though tzset() >had been used prior to the call to chroot(). > > > -- noah > _______________________________________________ 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: gettimeofday() seems to return local time
by Justin Walker 02 Dec '04

02 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Dec 2, 2004, at 4:09, share-darwin(a)think42.com wrote: On Dec 1, 2004, at 14:57, Michael Rubinstein wrote: If I'm reading the documentation right, I should be getting time in UTC. However, I'm getting local time. As I read the man page, you should get the local time in *tp, and the offset from UTC in *tzp. Regards, Justin _______________________________________________ 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 Wed, Dec 01, 2004 at 03:39:14PM -0800, Justin Walker wrote: I'm using gettimeofday(), on OS X 10.3.6, to get the time resolution I need (milliseconds). Should gettimeofday() return local time? Yup. Hm, my reading of the Solaris, Linux and Mac OS X man pages is that the time returned should indeed be UTC ... the former two explicitly mention UTC, the Mac OS X page speaks of "current Greenwich time", which I would interpret as "old" UTC. I don't think you are reading it correctly. The man page does mention "current Greenwich time", as you say, but in more detail: The system's notion of the current Greenwich time and the current time zone is obtained with the gettimeofday() call, and set with the settimeofday() call. The time is expressed in seconds and microseconds which I take to mean that you can get either. If you include a non-null *tzp, you get the local time, with the tz struct giving you the offset (from UTC/Greenwich). -- Justin C. Walker, Curmudgeon-At-Large * Institute for General Semantics | It's not whether you win or lose... | It's whether *I* win or lose. *--------------------------------------*-------------------------------* This email sent to site_archiver(a)lists.apple.com

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RE: gettimeofday() seems to return local time
by Michael Rubinstein 02 Dec '04

02 Dec '04

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Importance: Normal >On Dec 1, 2004, at 5:57 PM, Michael Rubinstein wrote: > >> I'm using gettimeofday(), on OS X 10.3.6, to get the time >resolution I >> need (milliseconds). >> >> If I'm reading the documentation right, I should be getting time in >> UTC. However, I'm getting local time. > >Have you checked that the time zone is properly set? > System Preferences/Date and Time show the right values. Is there something else that I should check? >You mention that this is on 10.3.6 -- do you know if it did >the same on >10.3.5 ? > I wrote the code after switching to 10.3.6. I haven't tested on other versions. Thanks, Michael _______________________________________________ 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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