diff options
Diffstat (limited to 'contrib/netbsd-tests/rump/kernspace/tsleep.c')
| -rw-r--r-- | contrib/netbsd-tests/rump/kernspace/tsleep.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/rump/kernspace/tsleep.c b/contrib/netbsd-tests/rump/kernspace/tsleep.c new file mode 100644 index 000000000000..4d08e0a5b37e --- /dev/null +++ b/contrib/netbsd-tests/rump/kernspace/tsleep.c @@ -0,0 +1,100 @@ +/* $NetBSD: tsleep.c,v 1.4 2014/03/21 22:18:57 dholland Exp $ */ + +/*- + * Copyright (c) 2010 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> +#if !defined(lint) +__RCSID("$NetBSD: tsleep.c,v 1.4 2014/03/21 22:18:57 dholland Exp $"); +#endif /* !lint */ + +#include <sys/param.h> +#include <sys/kernel.h> +#include <sys/kthread.h> +#include <sys/proc.h> + +#include "kernspace.h" + +#define NTHREADS 10 + +/* + * mpsafe thread. need dedicated interlock + */ +static kmutex_t mymtx; + +static void +tinythread(void *arg) +{ + static int wakeups; + int i, rv; + bool relock = ((uintptr_t)arg % 2) == 0; + + for (i = 0; i < 1000; i++) { + mutex_enter(&mymtx); + wakeup(tinythread); + if (wakeups >= NTHREADS-1) { + mutex_exit(&mymtx); + break; + } + rv = mtsleep(tinythread, relock ? 0 : PNORELOCK, + "haa", 0, &mymtx); + if (relock) + mutex_exit(&mymtx); + if (rv != 0) + panic("mtsleep failed"); + } + + mutex_enter(&mymtx); + wakeups++; + wakeup(tinythread); + + rv = mtsleep(rumptest_tsleep, PNORELOCK, "kepuli", 1, &mymtx); + if (rv != EWOULDBLOCK) + panic("mtsleep unexpected return value %d", rv); + + kthread_exit(0); +} + +void +rumptest_tsleep() +{ + struct lwp *notbigl[NTHREADS]; + int rv, i; + + mutex_init(&mymtx, MUTEX_DEFAULT, IPL_NONE); + + for (i = 0; i < NTHREADS; i++) { + rv = kthread_create(PRI_NONE, KTHREAD_MUSTJOIN| KTHREAD_MPSAFE, + NULL, tinythread, (void *)(uintptr_t)i, ¬bigl[i], "nb"); + if (rv) + panic("thread create failed: %d", rv); + } + + for (i = 0; i < NTHREADS; i++) { + kthread_join(notbigl[i]); + } +} |