From b33e61633a10a233510f6f49b97b7e2ad15c7311 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Tue, 11 Mar 2003 09:30:37 +0000 Subject: * sysdeps/generic/dl-sysdep.c (_dl_important_hwcaps): If CNT == 1, allocate space even for the trailing '/'. Reported by John Reiser . * 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. --- nptl/sysdeps/unix/sysv/linux/ia64/sem_trywait.c | 50 +++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 nptl/sysdeps/unix/sysv/linux/ia64/sem_trywait.c (limited to 'nptl/sysdeps/unix/sysv/linux/ia64/sem_trywait.c') diff --git a/nptl/sysdeps/unix/sysv/linux/ia64/sem_trywait.c b/nptl/sysdeps/unix/sysv/linux/ia64/sem_trywait.c new file mode 100644 index 0000000000..a07d3468a3 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/ia64/sem_trywait.c @@ -0,0 +1,50 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek , 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 +#include +#include +#include + +#include + + +int +__new_sem_trywait (sem_t *sem) +{ + int oldval, val = *(int *) sem; + + do + { + if (__builtin_expect (val == 0, 0)) + { + __set_errno (EAGAIN); + return -1; + } + oldval = val; + } + while ((val = lll_compare_and_swap ((int *) sem, oldval, oldval - 1)) + != oldval); + return 0; +} +versioned_symbol (libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1); +#if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1) +strong_alias (__new_sem_trywait, __old_sem_trywait) +compat_symbol (libpthread, __old_sem_trywait, sem_trywait, GLIBC_2_0); +#endif -- cgit 1.4.1