minix/tests/lib/libpthread/t_fpu.c
Lionel Sambuc 11be35a165 Importing NetBSD "Kyua" test framework
To do so, a few dependencies have been imported:

 * external/bsd/lutok
 * external/mit/lua
 * external/public-domain/sqlite
 * external/public-domain/xz

The Kyua framework is the new generation of ATF (Automated Test
Framework), it is composed of:

 * external/bsd/atf
 * external/bsd/kyua-atf-compat
 * external/bsd/kyua-cli
 * external/bsd/kyua-tester
 * tests

Kyua/ATF being written in C++, it depends on libstdc++ which is
provided by GCC. As this is not part of the sources, Kyua is only
compiled when the native GCC utils are installed.

To install Kyua do the following:

 * In a cross-build enviromnent, add the following to the build.sh
   commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes

WARNING:
  At this point the import is still experimental, and not supported
  on native builds (a.k.a make build).

Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
2013-07-23 20:43:41 +02:00

148 lines
4 KiB
C

/* $NetBSD: t_fpu.c,v 1.2 2013/01/27 14:47:37 mbalmer Exp $ */
/*
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__COPYRIGHT("@(#) Copyright (c) 2008\
The NetBSD Foundation, inc. All rights reserved.");
__RCSID("$NetBSD: t_fpu.c,v 1.2 2013/01/27 14:47:37 mbalmer Exp $");
/*
* This is adapted from part of csw/cstest of the MPD implementation by
* the University of Arizona CS department (http://www.cs.arizona.edu/sr/)
* which is in the public domain:
*
* "The MPD system is in the public domain and you may use and distribute it
* as you wish. We ask that you retain credits referencing the University
* of Arizona and that you identify any changes you make.
*
* We can't provide a warranty with MPD; it's up to you to determine its
* suitability and reliability for your needs. We would like to hear of
* any problems you encounter but we cannot promise a timely correction."
*
* It was changed to use pthread_create() and sched_yield() instead of
* the internal MPD context switching primitives by Ignatios Souvatzis
* <is@netbsd.org>.
*/
#include <math.h>
#include <pthread.h>
#include <sched.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <atf-c.h>
#include "h_common.h"
#define N_RECURSE 10
static void recurse(void);
int recursion_depth = 0;
pthread_mutex_t recursion_depth_lock;
static void *
stir(void *p)
{
double *q = (double *)p;
double x = *q++;
double y = *q++;
double z = *q++;
for (;;) {
x = sin ((y = cos (x + y + .4)) - (z = cos (x + z + .6)));
PTHREAD_REQUIRE(sched_yield());
}
}
static double
mul3(double x, double y, double z)
{
PTHREAD_REQUIRE(sched_yield());
return x * y * z;
}
static void *
bar(void *p)
{
double d;
int rc;
d = mul3(mul3(2., 3., 5.), mul3(7., 11., 13.), mul3(17., 19., 23.));
ATF_REQUIRE_EQ(d, 223092870.);
PTHREAD_REQUIRE(pthread_mutex_lock(&recursion_depth_lock));
rc = recursion_depth++;
PTHREAD_REQUIRE(pthread_mutex_unlock(&recursion_depth_lock));
if (rc < N_RECURSE)
recurse();
else
atf_tc_pass();
/* NOTREACHED */
return NULL;
}
static void
recurse(void) {
pthread_t s2;
pthread_create(&s2, 0, bar, 0);
sleep(20); /* XXX must be long enough for our slowest machine */
}
ATF_TC(fpu);
ATF_TC_HEAD(fpu, tc)
{
atf_tc_set_md_var(tc, "descr",
"Checks that thread context switches will leave the "
"floating point computations unharmed");
}
ATF_TC_BODY(fpu, tc)
{
double stirseed[] = { 1.7, 3.2, 2.4 };
pthread_t s5;
printf("Testing threaded floating point computations...\n");
PTHREAD_REQUIRE(pthread_mutex_init(&recursion_depth_lock, 0));
pthread_create(&s5, 0, stir, stirseed);
recurse();
atf_tc_fail("exiting from main");
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, fpu);
return atf_no_error();
}