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File: [cvs.NetBSD.org] / src / tests / rump / kernspace / tsleep.c (download)

Revision 1.4, Fri Mar 21 22:18:57 2014 UTC (7 years, 8 months ago) by dholland
Branch: MAIN
CVS Tags: yamt-pagecache-base9, tls-maxphys-base, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, matt-nb8-mediatek-base, matt-nb8-mediatek, localcount-20160914, is-mlppp-base, is-mlppp, cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, HEAD
Changes since 1.3: +2 -3 lines

remove sys/simplelock.h (straggler)

/*	$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, &notbigl[i], "nb");
		if (rv)
			panic("thread create failed: %d", rv);
	}

	for (i = 0; i < NTHREADS; i++) {
		kthread_join(notbigl[i]);
	}
}