1*11be35a1SLionel Sambuc /* $NetBSD: thread.c,v 1.2 2011/08/07 14:03:15 rmind Exp $ */
2*11be35a1SLionel Sambuc
3*11be35a1SLionel Sambuc /*-
4*11be35a1SLionel Sambuc * Copyright (c) 2010 The NetBSD Foundation, Inc.
5*11be35a1SLionel Sambuc * All rights reserved.
6*11be35a1SLionel Sambuc *
7*11be35a1SLionel Sambuc * Redistribution and use in source and binary forms, with or without
8*11be35a1SLionel Sambuc * modification, are permitted provided that the following conditions
9*11be35a1SLionel Sambuc * are met:
10*11be35a1SLionel Sambuc * 1. Redistributions of source code must retain the above copyright
11*11be35a1SLionel Sambuc * notice, this list of conditions and the following disclaimer.
12*11be35a1SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
13*11be35a1SLionel Sambuc * notice, this list of conditions and the following disclaimer in the
14*11be35a1SLionel Sambuc * documentation and/or other materials provided with the distribution.
15*11be35a1SLionel Sambuc *
16*11be35a1SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
17*11be35a1SLionel Sambuc * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
18*11be35a1SLionel Sambuc * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19*11be35a1SLionel Sambuc * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20*11be35a1SLionel Sambuc * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
21*11be35a1SLionel Sambuc * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22*11be35a1SLionel Sambuc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
23*11be35a1SLionel Sambuc * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24*11be35a1SLionel Sambuc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25*11be35a1SLionel Sambuc * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26*11be35a1SLionel Sambuc * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27*11be35a1SLionel Sambuc * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28*11be35a1SLionel Sambuc */
29*11be35a1SLionel Sambuc
30*11be35a1SLionel Sambuc #include <sys/cdefs.h>
31*11be35a1SLionel Sambuc #if !defined(lint)
32*11be35a1SLionel Sambuc __RCSID("$NetBSD: thread.c,v 1.2 2011/08/07 14:03:15 rmind Exp $");
33*11be35a1SLionel Sambuc #endif /* !lint */
34*11be35a1SLionel Sambuc
35*11be35a1SLionel Sambuc #include <sys/param.h>
36*11be35a1SLionel Sambuc #include <sys/kernel.h>
37*11be35a1SLionel Sambuc #include <sys/kthread.h>
38*11be35a1SLionel Sambuc #include <sys/mutex.h>
39*11be35a1SLionel Sambuc #include <sys/proc.h>
40*11be35a1SLionel Sambuc
41*11be35a1SLionel Sambuc #include "kernspace.h"
42*11be35a1SLionel Sambuc
43*11be35a1SLionel Sambuc static volatile int testit;
44*11be35a1SLionel Sambuc
45*11be35a1SLionel Sambuc static void
jointhread(void * arg)46*11be35a1SLionel Sambuc jointhread(void *arg)
47*11be35a1SLionel Sambuc {
48*11be35a1SLionel Sambuc
49*11be35a1SLionel Sambuc kpause("take5", false, 1, NULL);
50*11be35a1SLionel Sambuc testit = 1;
51*11be35a1SLionel Sambuc kthread_exit(0);
52*11be35a1SLionel Sambuc }
53*11be35a1SLionel Sambuc
54*11be35a1SLionel Sambuc void
rumptest_threadjoin()55*11be35a1SLionel Sambuc rumptest_threadjoin()
56*11be35a1SLionel Sambuc {
57*11be35a1SLionel Sambuc struct lwp *newl;
58*11be35a1SLionel Sambuc int rv;
59*11be35a1SLionel Sambuc
60*11be35a1SLionel Sambuc rv = kthread_create(PRI_NONE, KTHREAD_MUSTJOIN | KTHREAD_MPSAFE, NULL,
61*11be35a1SLionel Sambuc jointhread, NULL, &newl, "jointest");
62*11be35a1SLionel Sambuc if (rv)
63*11be35a1SLionel Sambuc panic("thread creation failed: %d", rv);
64*11be35a1SLionel Sambuc rv = kthread_join(newl);
65*11be35a1SLionel Sambuc if (rv)
66*11be35a1SLionel Sambuc panic("thread join failed: %d", rv);
67*11be35a1SLionel Sambuc
68*11be35a1SLionel Sambuc if (testit != 1)
69*11be35a1SLionel Sambuc panic("new thread did not run");
70*11be35a1SLionel Sambuc }
71*11be35a1SLionel Sambuc
72*11be35a1SLionel Sambuc static kmutex_t mtx;
73*11be35a1SLionel Sambuc static kcondvar_t cv;
74*11be35a1SLionel Sambuc static int value;
75*11be35a1SLionel Sambuc
76*11be35a1SLionel Sambuc static void
thethread(void * arg)77*11be35a1SLionel Sambuc thethread(void *arg)
78*11be35a1SLionel Sambuc {
79*11be35a1SLionel Sambuc
80*11be35a1SLionel Sambuc mutex_enter(&mtx);
81*11be35a1SLionel Sambuc value = 1;
82*11be35a1SLionel Sambuc cv_signal(&cv);
83*11be35a1SLionel Sambuc mutex_exit(&mtx);
84*11be35a1SLionel Sambuc
85*11be35a1SLionel Sambuc kthread_exit(0);
86*11be35a1SLionel Sambuc }
87*11be35a1SLionel Sambuc
88*11be35a1SLionel Sambuc void
rumptest_thread()89*11be35a1SLionel Sambuc rumptest_thread()
90*11be35a1SLionel Sambuc {
91*11be35a1SLionel Sambuc struct lwp *newl;
92*11be35a1SLionel Sambuc int rv;
93*11be35a1SLionel Sambuc
94*11be35a1SLionel Sambuc mutex_init(&mtx, MUTEX_DEFAULT, IPL_NONE);
95*11be35a1SLionel Sambuc cv_init(&cv, "jooei");
96*11be35a1SLionel Sambuc rv = kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL,
97*11be35a1SLionel Sambuc thethread, NULL, &newl, "ktest");
98*11be35a1SLionel Sambuc if (rv)
99*11be35a1SLionel Sambuc panic("thread creation failed: %d", rv);
100*11be35a1SLionel Sambuc
101*11be35a1SLionel Sambuc mutex_enter(&mtx);
102*11be35a1SLionel Sambuc while (value == 0)
103*11be35a1SLionel Sambuc cv_wait(&cv, &mtx);
104*11be35a1SLionel Sambuc mutex_exit(&mtx);
105*11be35a1SLionel Sambuc
106*11be35a1SLionel Sambuc /* try to verify thread really exists and we don't crash */
107*11be35a1SLionel Sambuc kpause("take1", false, 1, NULL);
108*11be35a1SLionel Sambuc }
109