June 2006 - Darwin-dev - lists.apple.com

Re: cpufrequency
by Dirk Schelfhout 14 Jun '06

14 Jun '06

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Re: system command returning unknown error.
by matt jaffa 14 Jun '06

14 Jun '06

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:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=bUX/UFvPsXySuNTNyi0hJUyKqKsW670Lb4IxVeAN98Yd28j6WJMC59osbQmKNbDdmaPtPfeq4/2EcaJK/Unn5O+6rM9TtWVPahKQINGBptzWV0Jy7DdnDPIs65+5GlGSyGhvqu/ubHl3e/NEfrgdJ/KOoXWFkW8nBJpMUFF+flQ= Ok so I admit I read it wrong regarding the return status, always got 0 for everything else I executed so I assumed 0 good and only -1 was returned if bad. soo I am getting 32256 by executing system("/sbin/shutdown -r now"); Rather than having people say "Yes, I did, No, I didn't", let's cut the Gordian knot. The man page on 10.4.6 reads as follows: SYSTEM(3) BSD Library Functions Manual SYSTEM(3) NAME system -- pass a command to the shell LIBRARY Standard C Library (libc, -lc) SYNOPSIS #include <stdlib.h> int system(const char *string); DESCRIPTION The system() function hands the argument string to the command inter- preter sh(1). The calling process waits for the shell to finish execut- ing the command, ignoring SIGINT and SIGQUIT, and blocking SIGCHLD. If string is a NULL pointer, system() will return non-zero if the command interpreter sh(1) is available, and zero if it is not. The system() function returns the exit status of the shell as returned by waitpid(2), or -1 if an error occurred when invoking fork(2) or waitpid(2). A return value of 127 means the execution of the shell failed. SEE ALSO sh(1), execve(2), fork(2), waitpid(2), popen(3) STANDARDS The system() function conforms to ISO/IEC 9899:1990 (``ISO C90'') and is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. BSD June 4, 1993 BSD Given this, your error of 32256 is being generated by the shell -- meaning the command you ran exited with that status. It might be more helpful if you can give a concise example of the specific code that is failing. John Francini On 14 Jun 2006, at 14:12, Matthew Jaffa wrote: > Yes I read the man page, and it says -1 if not successful, 0 if > successful, and returns non-zero if the command you pass in is > NULL, but I know I didn't pass in null cause I log it right before > I execute the command. > > Matt > > >> From: "Justin C. Walker" <justin(a)mac.com> >> To: "darwin-dev(a)lists.apple.com list" <darwin-dev(a)lists.apple.com> >> Subject: Re: system command returning unknown error. >> Date: Wed, 14 Jun 2006 10:38:46 -0700 >> >> >> On Jun 14, 2006, at 10:30 , matt jaffa wrote: >> >>> Hi, >>> >>> I am calling system(char* command) in my .cpp file. But this is >>> returning >>> error 32256. This error no. is not documented so I don't know >>> why it is not >>> working. >>> Anyone seen this error number before and know what it means. >> >> Did you read the man page for the 'system()' call? >> >> Regards, >> >> Justin >> >> -- >> Justin C. Walker, Curmudgeon at Large >> Director >> Institute for the Enhancement of the Director's Income >> ----------- >> Nobody knows the trouble I've been >> ----------- >> >> >> >> _______________________________________________ >> 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/mtjaffa%40msn.com >> >> This email sent to mtjaffa(a)msn.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/francini%40mac.com > > This email sent to francini(a)mac.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/mjaffa%40gmail.com This email sent to mjaffa(a)gmail.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… On 6/14/06, John Francini <francini(a)mac.com> wrote: This email sent to site_archiver(a)lists.apple.com

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Re: system command returning unknown error.
by John Francini 14 Jun '06

14 Jun '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com The man page on 10.4.6 reads as follows: NAME system -- pass a command to the shell LIBRARY Standard C Library (libc, -lc) SYNOPSIS #include <stdlib.h> int system(const char *string); SEE ALSO sh(1), execve(2), fork(2), waitpid(2), popen(3) John Francini On 14 Jun 2006, at 14:12, Matthew Jaffa wrote: Matt From: "Justin C. Walker" <justin(a)mac.com> To: "darwin-dev(a)lists.apple.com list" <darwin-dev(a)lists.apple.com> Subject: Re: system command returning unknown error. Date: Wed, 14 Jun 2006 10:38:46 -0700 On Jun 14, 2006, at 10:30 , matt jaffa wrote: Hi, Did you read the man page for the 'system()' call? Regards, Justin -- Justin C. Walker, Curmudgeon at Large Director Institute for the Enhancement of the Director's Income ----------- Nobody knows the trouble I've been ----------- _______________________________________________ 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/mtjaffa%40msn.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/francini%40mac.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… Rather than having people say "Yes, I did, No, I didn't", let's cut the Gordian knot. SYSTEM(3) BSD Library Functions Manual SYSTEM(3) DESCRIPTION The system() function hands the argument string to the command inter- preter sh(1). The calling process waits for the shell to finish execut- ing the command, ignoring SIGINT and SIGQUIT, and blocking SIGCHLD. If string is a NULL pointer, system() will return non-zero if the command interpreter sh(1) is available, and zero if it is not. The system() function returns the exit status of the shell as returned by waitpid(2), or -1 if an error occurred when invoking fork(2) or waitpid(2). A return value of 127 means the execution of the shell failed. STANDARDS The system() function conforms to ISO/IEC 9899:1990 (``ISO C90'') and is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. BSD June 4, 1993 BSD Given this, your error of 32256 is being generated by the shell -- meaning the command you ran exited with that status. It might be more helpful if you can give a concise example of the specific code that is failing. Yes I read the man page, and it says -1 if not successful, 0 if successful, and returns non-zero if the command you pass in is NULL, but I know I didn't pass in null cause I log it right before I execute the command. I am calling system(char* command) in my .cpp file. But this is returning error 32256. This error no. is not documented so I don't know why it is not working. Anyone seen this error number before and know what it means. This email sent to mtjaffa(a)msn.com This email sent to francini(a)mac.com This email sent to site_archiver(a)lists.apple.com

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Re: cpufrequency
by Markus Hitter 14 Jun '06

14 Jun '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Am 14.06.2006 um 19:30 schrieb Dirk Schelfhout: I am forced to work on a G4 laptop that can't use the new display. 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… My problem is that I am one of those energy sensitive persons that can't use cell phones. I have a brand new system sitting there that I can't use. Together with a nice 23 inch display. I am reasonably sure that if I can lower the clock the problem will go away. Since the source isn't there, I can't fix it myself. As already mentioned, there's CHUD (part of an Xcode installation) to disable cores and the energy saving preference panel to broadly lower the processor's speed. If all that doesn't work out, you might want to use the tools the processor and graphics card (another high performance chip in most Mac models) vendors offer to switch these frequencies. Usually available for the Windows OS only, more info on any of the overclocking sites. I dunno wether changed frequencies stick across reboots, but at least you'd find out wether your headache goes/stays away. This email sent to site_archiver(a)lists.apple.com

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Re: cpufrequency
by Ethan Bold 14 Jun '06

14 Jun '06

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Re: system command returning unknown error.
by Justin C. Walker 14 Jun '06

14 Jun '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Jun 14, 2006, at 11:12 , Matthew Jaffa wrote: Regards, Justin -- Justin C. Walker, Curmudgeon-At-Large Director Institute for the Enhancement of the Director's Income -------- "Weaseling out of things is what separates us from the animals. Well, except the weasel." - Homer J Simpson -------- _______________________________________________ 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… Yes I read the man page, and it says -1 if not successful, 0 if successful, and returns non-zero if the command you pass in is NULL, but I know I didn't pass in null cause I log it right before I execute the command. Really? I just checked the man page for system(3), on 10.4.6, and on 10.3.9. That is not what I read. Where are you reading this? This email sent to site_archiver(a)lists.apple.com

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Re: cpufrequency
by Ethan Bold 14 Jun '06

14 Jun '06

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Re: system command returning unknown error.
by Matthew Jaffa 14 Jun '06

14 Jun '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Matt From: "Justin C. Walker" <justin(a)mac.com> To: "darwin-dev(a)lists.apple.com list" <darwin-dev(a)lists.apple.com> Subject: Re: system command returning unknown error. Date: Wed, 14 Jun 2006 10:38:46 -0700 On Jun 14, 2006, at 10:30 , matt jaffa wrote: Hi, Did you read the man page for the 'system()' call? Regards, Justin -- Justin C. Walker, Curmudgeon at Large Director Institute for the Enhancement of the Director's Income ----------- Nobody knows the trouble I've been ----------- _______________________________________________ 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/mtjaffa%40msn.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… Yes I read the man page, and it says -1 if not successful, 0 if successful, and returns non-zero if the command you pass in is NULL, but I know I didn't pass in null cause I log it right before I execute the command. I am calling system(char* command) in my .cpp file. But this is returning error 32256. This error no. is not documented so I don't know why it is not working. Anyone seen this error number before and know what it means. This email sent to mtjaffa(a)msn.com This email sent to site_archiver(a)lists.apple.com

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Re: cpufrequency
by Brian Bergstrand 14 Jun '06

14 Jun '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Jun 14, 2006, at 12:30 PM, Dirk Schelfhout wrote: Hi, I am forced to work on a G4 laptop that can't use the new display. Try this: sudo /usr/bin/pmset -a reduce 1 >From 'man pmset' : " reduce - reduce processor speed (value = 0/1) " I'm on a G5, but hopefully it works on the new Intel Core's too. HTH. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (Darwin) iD8DBQFEkE80edHYW7bHtqIRAixxAKDiysRsasOpZMsWU7p9KXOWP7af1gCgjNbP 5YJcCI23+Kpus27Az4xw6p8= =hgZZ -----END PGP SIGNATURE----- _______________________________________________ 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 is probably off topic, but anyways. But I am getting desperate. Is there a way for me to force an intel imac to run at a lower frequency ? My problem is that I am one of those energy sensitive persons that can't use cell phones. I have a brand new system sitting there that I can't use. Together with a nice 23 inch display. I am reasonably sure that if I can lower the clock the problem will go away. Since the source isn't there, I can't fix it myself. Barring that, you could try disabling one of the core's. You can do this if you install the CHUD tools, which adds a System Pref Pane, called "CPU". This email sent to site_archiver(a)lists.apple.com

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Re: cpufrequency
by Dave Schroeder 14 Jun '06

14 Jun '06

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Have you tried disabling one of the CPU cores? On Jun 14, 2006, at 12:51 PM, Dirk Schelfhout 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… This email sent to site_archiver(a)lists.apple.com I get a horrible headache. So I have to switch it off. smime.p7s

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