tests/rump/kernspace/thread.c

   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 }