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author | Roland McGrath <roland@gnu.org> | 2003-03-11 09:30:37 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 2003-03-11 09:30:37 +0000 |
commit | b33e61633a10a233510f6f49b97b7e2ad15c7311 (patch) | |
tree | 9b6025b692435f629bc771dca74dcfb48e41768a /nptl/sysdeps/unix/sysv/linux/ia64/lowlevelmutex.c | |
parent | 5d5d5969b17422e3b1af6f88436e91f32a36fd58 (diff) | |
download | glibc-b33e61633a10a233510f6f49b97b7e2ad15c7311.tar.gz glibc-b33e61633a10a233510f6f49b97b7e2ad15c7311.tar.xz glibc-b33e61633a10a233510f6f49b97b7e2ad15c7311.zip |
* sysdeps/generic/dl-sysdep.c (_dl_important_hwcaps): If CNT == 1,
allocate space even for the trailing '/'. Reported by John Reiser <jreiser@BitWagon.com>. * sysdeps/unix/sysv/linux/ia64/sysdep.h (LOAD_ARGS_6, ASM_ARGS_6, ASM_CLOBBERS_6): Define. (ASM_CLOBBERS_5): Use ASM_CLOBBERS_6. * sysdeps/unix/sysv/linux/ia64/clone2.S (__clone2): Reorder arguments to match IA-32 order. * sysdeps/unix/sysv/linux/i386/clone.S: Fix comment.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/ia64/lowlevelmutex.c')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/ia64/lowlevelmutex.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/ia64/lowlevelmutex.c b/nptl/sysdeps/unix/sysv/linux/ia64/lowlevelmutex.c new file mode 100644 index 0000000000..7ab67ca56c --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/ia64/lowlevelmutex.c @@ -0,0 +1,100 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. + + 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. */ + +#include <errno.h> +#include <sysdep.h> +#include <lowlevellock.h> +#include <sys/time.h> + + +void +___lll_mutex_lock (futex, newval) + int *futex; + int newval; +{ + int oldval, val; + + do + { + lll_futex_wait (futex, newval); + val = *futex; + do + oldval = val; + while ((val = lll_compare_and_swap (futex, oldval, oldval + 1)) + != oldval); + newval = val + 1; + } + while (val != 0); + + *futex = 2; +} +hidden_proto (___lll_mutex_lock) + + +int +___lll_mutex_timedlock (futex, abstime, newval) + int *futex; + const struct timespec *abstime; + int newval; +{ + /* Reject invalid timeouts. */ + if (abstime->tv_nsec >= 1000000000) + return EINVAL; + + int oldval, val; + do + { + /* Get the current time. */ + struct timeval tv; + gettimeofday (&tv, NULL); + + /* Compute relative timeout. */ + struct timespec rt; + rt.tv_sec = abstime->tv_sec - tv.tv_sec; + rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000; + if (rt.tv_nsec < 0) + { + rt.tv_nsec += 1000000000; + --rt.tv_sec; + } + /* Already timed out? */ + if (rt.tv_sec < 0) + return ETIMEDOUT; + + /* Wait. */ + int err = lll_futex_timed_wait (futex, newval, &rt); + + /* If timed out return with an appropriate error. */ + if (err == -ETIMEDOUT) + return ETIMEDOUT; + + val = *futex; + do + oldval = val; + while ((val = lll_compare_and_swap (futex, oldval, oldval + 1)) + != oldval); + newval = val + 1; + } + while (val != 0); + + *futex = 2; + + return 0; +} +hidden_proto (___lll_mutex_timedlock) |