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Re: SHMLBA on ARM
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Carlos O'Donell wrote:
> Did you attach the right patch? The attached patch doesn't apply
> to the file in the ChangeLog, instead it creates
> `sysdeps/unix/sysv/linux/mips/bits/shm.h' for MIPS?
The path in the previous patch was incorrect. It is corrected in patch
attached to this message.
>
> Please also report the results of running the glibc testsuite before and after
> the patch.
I do not see any new fails or passes with this patch. Here are results
on arm-linux-gnueabi
Before the patch
/testsuite/glibc
make[1]: *** [/testsuite/glibc/objdir/math/test-fenv.out] Error 1
make[1]: *** [/testsuite/glibc/objdir/math/test-float.out] Error 1
make[1]: *** [/testsuite/glibc/objdir/math/test-double.out] Error 1
make[1]: *** [/testsuite/glibc/objdir/math/test-ifloat.out] Error 1
make[1]: *** [/testsuite/glibc/objdir/math/test-idouble.out] Error 1
make: *** [math/tests] Error 2
make: Entering an unknown directorymake: Leaving an unknown
directorymake: *** [cross/tests] Error 2
make[1]: *** [/testsuite/glibc/objdir/stdio-common/tst-fseek.out] Error 1
make[1]: *** [/testsuite/glibc/objdir/stdio-common/test-vfprintf.out]
Error 1
make: *** [stdio-common/tests] Error 2
make[1]: *** [/testsuite/glibc/objdir/nptl/tst-eintr5.out] Error 1
make: *** [nptl/tests] Error 2
After the patch
make[1]: *** [/testsuite/glibc/objdir/math/test-fenv.out] Error 1
make[1]: *** [/testsuite/glibc/objdir/math/test-float.out] Error 1
make[1]: *** [/testsuite/glibc/objdir/math/test-double.out] Error 1
make[1]: *** [/testsuite/glibc/objdir/math/test-ifloat.out] Error 1
make[1]: *** [/testsuite/glibc/objdir/math/test-idouble.out] Error 1
make: *** [math/tests] Error 2
make: Entering an unknown directorymake: Leaving an unknown
directorymake: *** [cross/tests] Error 2
make[1]: *** [/testsuite/glibc/objdir/stdio-common/tst-fseek.out] Error 1
make[1]: *** [/testsuite/glibc/objdir/stdio-common/test-vfprintf.out]
Error 1
make: *** [stdio-common/tests] Error 2
make[1]: *** [/testsuite/glibc/objdir/nptl/tst-eintr5.out] Error 1
make: *** [nptl/tests] Error 2
>
> Thanks.
>
> Cheers,
> Carlos.
Changelog.arm
2007-11-20 Khem Raj <kraj@mvista.com>
* sysdeps/unix/sysv/linux/arm/bits/shm.h: New file.
- --
Khem Raj
MontaVista Software Inc.
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--- /dev/null 2007-10-15 16:18:04.000000000 -0700
+++ sysdeps/unix/sysv/linux/arm/bits/shm.h 2007-11-20 10:31:05.000000000 -0800
@@ -0,0 +1,102 @@
+/* Copyright (C) 1995,1996,1997,2000,2002,2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _SYS_SHM_H
+# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead."
+#endif
+
+#include <bits/types.h>
+
+/* Permission flag for shmget. */
+#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */
+#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */
+
+/* Flags for `shmat'. */
+#define SHM_RDONLY 010000 /* attach read-only else read-write */
+#define SHM_RND 020000 /* round attach address to SHMLBA */
+#define SHM_REMAP 040000 /* take-over region on attach */
+
+/* Commands for `shmctl'. */
+#define SHM_LOCK 11 /* lock segment (root only) */
+#define SHM_UNLOCK 12 /* unlock segment (root only) */
+
+__BEGIN_DECLS
+
+/* Segment low boundary address multiple. */
+#define SHMLBA (__getpagesize () << 2)
+extern int __getpagesize (void) __THROW __attribute__ ((__const__));
+
+
+/* Type to count number of attaches. */
+typedef unsigned long int shmatt_t;
+
+/* Data structure describing a set of semaphores. */
+struct shmid_ds
+ {
+ struct ipc_perm shm_perm; /* operation permission struct */
+ size_t shm_segsz; /* size of segment in bytes */
+ __time_t shm_atime; /* time of last shmat() */
+ unsigned long int __unused1;
+ __time_t shm_dtime; /* time of last shmdt() */
+ unsigned long int __unused2;
+ __time_t shm_ctime; /* time of last change by shmctl() */
+ unsigned long int __unused3;
+ __pid_t shm_cpid; /* pid of creator */
+ __pid_t shm_lpid; /* pid of last shmop */
+ shmatt_t shm_nattch; /* number of current attaches */
+ unsigned long int __unused4;
+ unsigned long int __unused5;
+ };
+
+#ifdef __USE_MISC
+
+/* ipcs ctl commands */
+# define SHM_STAT 13
+# define SHM_INFO 14
+
+/* shm_mode upper byte flags */
+# define SHM_DEST 01000 /* segment will be destroyed on last detach */
+# define SHM_LOCKED 02000 /* segment will not be swapped */
+# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */
+
+struct shminfo
+ {
+ unsigned long int shmmax;
+ unsigned long int shmmin;
+ unsigned long int shmmni;
+ unsigned long int shmseg;
+ unsigned long int shmall;
+ unsigned long int __unused1;
+ unsigned long int __unused2;
+ unsigned long int __unused3;
+ unsigned long int __unused4;
+ };
+
+struct shm_info
+ {
+ int used_ids;
+ unsigned long int shm_tot; /* total allocated shm */
+ unsigned long int shm_rss; /* total resident shm */
+ unsigned long int shm_swp; /* total swapped shm */
+ unsigned long int swap_attempts;
+ unsigned long int swap_successes;
+ };
+
+#endif /* __USE_MISC */
+
+__END_DECLS