tests/kernel/t_lock.c

   1 /* $NetBSD$ */
   2
   3 /*-
   4  * Copyright (c) 2002, 2008 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 CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __COPYRIGHT("@(#) Copyright (c) 2008\
  31  The NetBSD Foundation, inc. All rights reserved.");
  32 __RCSID("$NetBSD$");
  33
  34 #include <sys/time.h>
  35
  36 #include <machine/lock.h>
  37 #include <signal.h>
  38
  39 #include <atf-c.h>
  40
  41 #include "../h_macros.h"
  42
  43 __cpu_simple_lock_t lk;
  44 volatile int handled = 0;
  45
  46 static void
  47 handler(int sig)
  48 {
  49         handled = 1;
  50         __cpu_simple_unlock(&lk);
  51 }
  52
  53 ATF_TC(lock);
  54 ATF_TC_HEAD(lock, tc)
  55 {
  56         atf_tc_set_md_var(tc, "timeout", "3");
  57         atf_tc_set_md_var(tc, "descr",
  58             "Checks __cpu_simple_lock()/__cpu_simple_unlock()");
  59 }
  60 ATF_TC_BODY(lock, tc)
  61 {
  62         struct itimerval itv;
  63
  64         __cpu_simple_lock_init(&lk);
  65
  66         REQUIRE_LIBC(signal(SIGVTALRM, handler), SIG_ERR);
  67
  68         itv.it_interval.tv_sec = 0;
  69         itv.it_interval.tv_usec = 0;
  70         itv.it_value.tv_sec = 1;
  71         itv.it_value.tv_usec = 0;
  72         RL(setitimer(ITIMER_VIRTUAL, &itv, NULL));
  73
  74         __cpu_simple_lock(&lk);
  75         __cpu_simple_lock(&lk);
  76
  77         ATF_REQUIRE(handled);
  78
  79         __cpu_simple_unlock(&lk);
  80 }
  81
  82 ATF_TP_ADD_TCS(tp)
  83 {
  84         ATF_TP_ADD_TC(tp, lock);
  85
  86         return atf_no_error();
  87 }