[LTP] [PATCH v3 4/7] fzsync: Add functionality test for library

[Cyril Hrubis <chrubis@suse.cz>]

Hi!
> +/*
> + * Copyright (c) 2017 Richard Palethorpe <rpalethorpe@suse.com>
> + *
> + * This program is free software: you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation, either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program 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 General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program. If not, see <http://www.gnu.org/licenses/>.
> + */
> +/* Basic functionality test for tst_fuzzy_sync.h similar to the atomic tests
> + * (test15.c). One thread writes to the odd indexes of an array while the
> + * other writes to the even. If the threads are not synchronised then they
> + * will probably write to the wrong indexes as they share an index variable
> + * which they should take it in turns to update.
> + */

I'm just wondering, wouldn't be a better test for the sync library if
one of the threads does short usleep(); and we would check if the delay
more or less corresponds to this value after some iterations?

-- 
Cyril Hrubis
chrubis@suse.cz