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