From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- mach/mutex-solid.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 mach/mutex-solid.c (limited to 'mach/mutex-solid.c') diff --git a/mach/mutex-solid.c b/mach/mutex-solid.c new file mode 100644 index 0000000000..aeaa269c6b --- /dev/null +++ b/mach/mutex-solid.c @@ -0,0 +1,50 @@ +/* Copyright (C) 1994 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include + +/* If cthreads is linked in, it will define these variables with values + that point to its mutex functions. */ +void (*_cthread_mutex_lock_routine) (struct mutex *); +void (*_cthread_mutex_unlock_routine) (struct mutex *); + +void +__mutex_lock_solid (void *lock) +{ + if (_cthread_mutex_lock_routine) + (*_cthread_mutex_lock_routine) (lock); + else + __spin_lock_solid (lock); +} + +void +__mutex_unlock_solid (void *lock) +{ + if (_cthread_mutex_unlock_routine) + (*_cthread_mutex_unlock_routine) (lock); +} + +void +__mutex_init (void *lock) +{ + /* This happens to be name space-safe because it is a macro. + It invokes only spin_lock_init, which is a macro for __spin_lock_init; + and cthread_queue_init, which is a macro for some simple code. */ + mutex_init ((struct mutex *) lock); +} -- cgit v1.2.3