From a88c9263686012ca2a336379b7d66e59dea2b43b Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 5 Feb 2003 09:54:24 +0000 Subject: Update. 2003-02-05 Ulrich Drepper * sysdeps/pthread/bits/libc-lock.h (__libc_once): Set control variable for non-libpthread case to the same value the pthread_once function would use. --- nptl/sysdeps/s390/pthread_spin_trylock.c | 34 ++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 nptl/sysdeps/s390/pthread_spin_trylock.c (limited to 'nptl/sysdeps/s390/pthread_spin_trylock.c') diff --git a/nptl/sysdeps/s390/pthread_spin_trylock.c b/nptl/sysdeps/s390/pthread_spin_trylock.c new file mode 100644 index 0000000000..8ed0a36647 --- /dev/null +++ b/nptl/sysdeps/s390/pthread_spin_trylock.c @@ -0,0 +1,34 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Martin Schwidefsky , 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 "pthreadP.h" + +int +pthread_spin_trylock (lock) + pthread_spinlock_t *lock; +{ + unsigned long int old; + + __asm __volatile ("cs %0,%3,%1" + : "=d" (old), "=Q" (*lock) + : "0" (0), "d" (1), "m" (*lock) : "cc" ); + + return old != 0 ? EBUSY : 0; +} -- cgit 1.4.1