August 2003 - Darwin-kernel

Re: MALLOC failing..
by Jim Magee 14 Aug '03

14 Aug '03

On Thursday, August 14, 2003, at 5:20 PM, Andrew Gallatin wrote: Jim Magee writes: limit (from a physical memory perspective). You may be having trouble allocating enough contiguous virtual space in kernel - given that you say most of the rest of memory is also wired down in the kernel. The hundreds of megabytes which are wired came from the address space of a user program, and are wired via prepare. They're never explicitly mapped into the kernel's address space. Eg: (err checking omitted for brevity): md = IOMemoryDescriptor::withAddress ((vm_address_t) uaddr, (IOByteCount) PAGE_SIZE, kIODirectionOutIn, task); md->prepare (kIODirectionOutIn); *dma_addr = md->getPhysicalSegment (0, &len); Does the above map the memory at uaddr into the kernel, or otherwise waste kernel address space? No. --Jim _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

1 0

Re: MALLOC failing..
by Andrew Gallatin 14 Aug '03

14 Aug '03

Jim Magee writes: > limit (from a physical memory perspective). You may be having trouble > allocating enough contiguous virtual space in kernel - given that you > say most of the rest of memory is also wired down in the kernel. The hundreds of megabytes which are wired came from the address space of a user program, and are wired via prepare. They're never explicitly mapped into the kernel's address space. Eg: (err checking omitted for brevity): md = IOMemoryDescriptor::withAddress ((vm_address_t) uaddr, (IOByteCount) PAGE_SIZE, kIODirectionOutIn, task); md->prepare (kIODirectionOutIn); *dma_addr = md->getPhysicalSegment (0, &len); Does the above map the memory at uaddr into the kernel, or otherwise waste kernel address space? Thanks, Drew _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

1 0

Re: MALLOC failing..
by Jim Magee 14 Aug '03

14 Aug '03

On Thursday, August 14, 2003, at 9:08 AM, Andrew Gallatin wrote: Brian Tabone writes: Andrew, There is a limit to how much memory you can allocate in the kernel space, if I remember correctly. On top of this, kernel memory is wired, so allocating large chunks has a very negative affect on system FWIW, a large percentage of the memory in the system is being wired for OS-Bypass networking via IOMemoryDescriptors which describe userspace addresses. Is there a restriction on the amount of wired memory in the system, such that if you have a lot of user memory wired, kernel memory allocations will fail? The only limit imposed on the kernel trying to wire memory is that you cannot dip into the last N pages which comprise the reserved page pool (where N is in the dozens of pages). So, effectively, there is no limit (from a physical memory perspective). You may be having trouble allocating enough contiguous virtual space in kernel - given that you say most of the rest of memory is also wired down in the kernel. --Jim _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

1 0

Turning the cooling fan on manually
by Patrick Roeder 14 Aug '03

14 Aug '03

Hi! Does anyone know how to turn the cooling fan of a PowerBook G4 on manually? I read a lot of kernel code, but I couldn't find the place where thermal managment is done. I would like to write a small tool, which enables the user to turn on the fan. Thanks Patrick _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

1 0

Re: MALLOC failing..
by Andrew Gallatin 14 Aug '03

14 Aug '03

Brian Tabone writes: > Andrew, > > There is a limit to how much memory you can allocate in the kernel > space, if I remember correctly. On top of this, kernel memory is wired, > so allocating large chunks has a very negative affect on system FWIW, a large percentage of the memory in the system is being wired for OS-Bypass networking via IOMemoryDescriptors which describe userspace addresses. Is there a restriction on the amount of wired memory in the system, such that if you have a lot of user memory wired, kernel memory allocations will fail? > performance. I forget specifcally how to set the limit for kernel > allocations unfortunately. > That would be handy information. Thanks, Drew _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

1 0

Re: stdio.h FILE struct definition
by Andrew Pinski 14 Aug '03

14 Aug '03

On Wednesday, Aug 13, 2003, at 23:30 US/Eastern, William Bug wrote: Hi All, We are trying to port a large image processing application that has been compiled for various Unices in the past. One of the sticking points is the need to specify an OS-specific FILE struct in a .h file of it's own. Does anyone know in what Darwin header we'd find this struct declared? We haven't been able to track stdio.h anywhere. stdio.h is in /usr/include/stdio.h: typedef struct __sFILE { unsigned char *_p; /* current position in (some) buffer */ int _r; /* read space left for getc() */ int _w; /* write space left for putc() */ short _flags; /* flags, below; this FILE is free if 0 */ short _file; /* fileno, if Unix descriptor, else -1 */ struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */ int _lbfsize; /* 0 or -_bf._size, for inline putc */ /* operations */ void *_cookie; /* cookie passed to io functions */ int (*_close) __P((void *)); int (*_read) __P((void *, char *, int)); fpos_t (*_seek) __P((void *, fpos_t, int)); int (*_write) __P((void *, const char *, int)); /* separate buffer for long sequences of ungetc() */ struct __sbuf _ub; /* ungetc buffer */ unsigned char *_up; /* saved _p when _p is doing ungetc data */ int _ur; /* saved _r when _r is counting ungetc data */ /* tricks to meet minimum requirements even when malloc() fails */ unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */ unsigned char _nbuf[1]; /* guarantee a getc() buffer */ /* separate buffer for fgetln() when line crosses buffer boundary */ struct __sbuf _lb; /* buffer for fgetln() */ /* Unix stdio files get aligned to block boundaries on fseek() */ int _blksize; /* stat.st_blksize (may be != _bf._size) */ fpos_t _offset; /* current lseek offset (see WARNING) */ } FILE; _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

1 0

stdio.h FILE struct definition
by William Bug 14 Aug '03

14 Aug '03

Hi All, We are trying to port a large image processing application that has been compiled for various Unices in the past. One of the sticking points is the need to specify an OS-specific FILE struct in a .h file of it's own. Does anyone know in what Darwin header we'd find this struct declared? We haven't been able to track stdio.h anywhere. Below I list examples of the platform specific io.h files given for other OS's: Thanks ahead of time for any help you can offer. Cheers, Bill Bug /* RS600io_h = "@(#)RS6000io.h 4.1 95/11/09 14:02:40" */ /********************************************* * RS6000io.h AIX 3.2 * subset of the stdio.h of IBM RS600 for inclusion in the SCIL interpreter * this file is substituted for <stdio.h> because of the limitations of * interpreter */ #ifndef _H_S_STDIO #define _H_S_STDIO #define BUFSIZ 4096 #define _SBFSIZ 8 typedef struct { unsigned char *_ptr; int _cnt; unsigned char *_base; unsigned char *_bufendp; short _flag; short _file; int __stdioid; char *__newbase; long _unused[1]; } FILE; #define NULL 0 #define EOF (-1) #endif /* dec5000io_h = "@(#)dec5000io.h 4.1 95/11/09 14:02:45" */ /********************************************* * dec5000io.h * subset of the stdio.h of dec5000 for inclusion in the SCIL interpreter * this file is substituted for <stdio.h> because of the limitations of * interpreter *********************************************/ #ifndef _H_S_STDIO_ #define _H_S_STDIO_ #define BUFSIZ 1024 typedef struct _iobuf { int _cnt; char *_ptr; char *_base; int _bufsiz; short _flag; short _file; } FILE; #define NULL 0 #define EOF (-1) #endif /* hpuxio_h = "@(#)hpuxio.h 4.1 95/11/09 14:02:49" */ /********************************************* * hpuxio.h * subset of the stdio.h of hpux systems for inclusion in the SCIL interpreter * this file is substituted for <stdio.h> because of the limitations of * interpreter ***********************************************/ #ifndef _H_S_STDIO #define _H_S_STDIO #define BUFSIZ 1024 #define _SBFSIZ 8 typedef struct { int __cnt; unsigned char *__ptr; unsigned char *__base; unsigned short __flag; unsigned char __fileL; /* low byte of file desc */ unsigned char __fileH; /* high byte of file desc */ } FILE; #define NULL 0 #define EOF (-1) #endif /* _H_S_STDIO */ /* sgiio_h = "@(#)sgiio.h 4.1 95/11/09 14:03:10" */ /********************************************* * sgiio.h * subset of the stdio.h of SGI for inclusion in the SCIL interpreter * this file is substituted for <stdio.h> because of the limitations of * interpreter *********************************************/ #ifndef _H_S_STDIO #define _H_S_STDIO #define BUFSIZ 8192 #define _SBFSIZ 8 typedef struct __file_s { int _cnt; unsigned char *_ptr; unsigned char *_base; short _flag; char _file; } FILE; #define NULL 0 #define EOF (-1) #endif /* sunio_h = "@(#)sunio.h 4.1 95/11/09 14:03:12" */ /********************************************* * sunio.h * subset of the stdio.h of Sun (3 and 4) for inclusion in the SCIL interpreter * this file is substituted for <stdio.h> because of the limitations of * interpreter ***********************************************/ #ifndef _H_S_STDIO #define _H_S_STDIO #define BUFSIZ 1024 #define _SBFSIZ 8 typedef struct { int _cnt; unsigned char *_ptr; unsigned char *_base; int _bufsiz; short _flag; char _file; } FILE; #define NULL 0 #define EOF (-1) #endif /* linuxio_h = "@(#)linuxio.h 4.1 97/08/19 13:47:15" */ /********************************************* * linuxio.h * subset of the stdio.h of linux for inclusion in the SCIL interpreter * this file is substituted for <stdio.h> because of the limitations of * interpreter ***********************************************/ #ifndef _H_S_STDIO #define _H_S_STDIO #define BUFSIZ 1024 typedef long FILE; /* dirty trick, but who cares ? */ #define NULL 0 #define EOF (-1) #endif Bill Bug Senior Analyst/Ontological Engineer Computer Vision Laboratory for Vertebrate Brain Mapping Department of Neurobiology & Anatomy Drexel University College of Medicine 2900 Queen Lane Philadelphia, PA 19129 215 991 8430 (ph) _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

1 0

Getting Darwin 6.6 kernel source code
by David Lázaro Saz 14 Aug '03

14 Aug '03

Hello, I'm having problems trying to get the kernel source code for Darwin 6.6 (XNU and such) from the Apple open source web site. Every time I try to download it and introduce my Apple ID and my password I get dumped again to the login form. I have also tried using WebDAV and CVS with no success. Does anybody know if there are some problems with the web site? Is there any mirror for the source code? TIA, David. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

1 0

Re: Apple3Com3C90x kernel extension and OS X 10.2
by Robert J. Accettura 14 Aug '03

14 Aug '03

I'm on my XP laptop right now, hence I didn't have the errors at hand (sorry, should have noted that). Those are the exact same errors I got. Don't know how to fix it though. Hopefully someone here would be kind enough to enlighten me. Many thanks for the good old college try. Regards, Robert chuck remes wrote: > It would have been helpful to have the errors listed to give a hint. I > dloaded it from there and gave it the old college try. During my > attempt I got the following blow-ups on various source files: > > 3C90xKDB.cpp:182: Internal compiler error in > instantiate_virtual_regs_1, at function.c:3999 > > 3C90xMedia.cpp:249: Internal compiler error in > instantiate_virtual_regs_1, at function.c:3999 > > 3C90xInline.h:62: inconsistent operand constraints in an `asm' > > 3C90x.cpp:486: Internal compiler error in instantiate_virtual_regs_1, > at function.c:3999 > > 3C90xInline.h:61: inconsistent operand constraints in an `asm' > > I tried building with both gcc 2.95.2 and gcc 3.1. Both generated > mostly the same errors but in different spots. It really choked pretty > consistently on the inline assembly. > > This is way beyond my ken, so I defer to older and wiser heads. Good > luck. > > cr > > On Wednesday, August 13, 2003, at 06:54 PM, Robert J. Accettura wrote: > >> Looking to get Apple3Com3C90x/ >> <http://www.opendarwin.org/cgi-bin/cvsweb.cgi/src/Apple3Com3C90x/> built >> for OS X 10.2.... does anyone know how to do so? >> >> Would be great to get working. >> >> >> Regards, >> Robert J. Accettura >> robert(a)accettura.com >> >> [demime 0.98b removed an attachment of type >> application/x-pkcs7-signature which had a name of smime.p7s] >> _______________________________________________ >> darwin-kernel mailing list | darwin-kernel(a)lists.apple.com >> Help/Unsubscribe/Archives: >> http://www.lists.apple.com/mailman/listinfo/darwin-kernel >> Do not post admin requests to the list. They will be ignored. >> > > > -- Robert J. Accettura robert(a)accettura.com [demime 0.98b removed an attachment of type application/x-pkcs7-signature which had a name of smime.p7s] _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

1 0

Re: Apple3Com3C90x kernel extension and OS X 10.2
by chuck remes 14 Aug '03

14 Aug '03

It would have been helpful to have the errors listed to give a hint. I dloaded it from there and gave it the old college try. During my attempt I got the following blow-ups on various source files: 3C90xKDB.cpp:182: Internal compiler error in instantiate_virtual_regs_1, at function.c:3999 3C90xMedia.cpp:249: Internal compiler error in instantiate_virtual_regs_1, at function.c:3999 3C90xInline.h:62: inconsistent operand constraints in an `asm' 3C90x.cpp:486: Internal compiler error in instantiate_virtual_regs_1, at function.c:3999 3C90xInline.h:61: inconsistent operand constraints in an `asm' I tried building with both gcc 2.95.2 and gcc 3.1. Both generated mostly the same errors but in different spots. It really choked pretty consistently on the inline assembly. This is way beyond my ken, so I defer to older and wiser heads. Good luck. cr On Wednesday, August 13, 2003, at 06:54 PM, Robert J. Accettura wrote: Looking to get Apple3Com3C90x/ <http://www.opendarwin.org/cgi-bin/cvsweb.cgi/src/Apple3Com3C90x/> built for OS X 10.2.... does anyone know how to do so? Would be great to get working. Regards, Robert J. Accettura robert(a)accettura.com [demime 0.98b removed an attachment of type application/x-pkcs7-signature which had a name of smime.p7s] _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored. _______________________________________________ darwin-kernel mailing list | darwin-kernel(a)lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.

1 0