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t_threads.m revision 1.1 
      1 /* $NetBSD: t_threads.m,v 1.1 2010/07/18 12:41:51 jmmv 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 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 /* Originally written by David Wetzel */
     30 
     31 #include <assert.h>
     32 #include <stdio.h>
     33 #include <unistd.h>
     34 
     35 #include <atf-c.h>
     36 
     37 #include <objc/objc.h>
     38 #include <objc/objc-api.h>
     39 #include <objc/Object.h>
     40 
     41 static int IsMultithreaded = 0;
     42 static objc_mutex_t Mutex;
     43 static objc_condition_t Condition;
     44 
     45 @interface MyClass : Object
     46 {
     47 }
     48 -(void)start;
     49 @end
     50 
     51 @implementation MyClass
     52 -(void)start
     53 {
     54 	printf("detached thread started!\n");
     55 
     56 	objc_condition_signal(Condition);
     57 }
     58 @end
     59 
     60 static void
     61 becomeMultiThreaded(void)
     62 {
     63 	printf("becoming multithreaded!\n");
     64 	IsMultithreaded++;
     65 }
     66 
     67 ATF_TC(thread_callback);
     68 ATF_TC_HEAD(thread_callback, tc)
     69 {
     70 	atf_tc_set_md_var(tc, "descr", "Checks that the thread callback is only"
     71 	    "called once");
     72 }
     73 ATF_TC_BODY(thread_callback, tc)
     74 {
     75 	id o = [MyClass new];
     76 	objc_thread_callback cb;
     77 	objc_thread_t rv;
     78 
     79 	cb = objc_set_thread_callback(becomeMultiThreaded);
     80 	printf("Old Callback: %p\n", cb);
     81 	ATF_CHECK(cb == 0);
     82 
     83 	Mutex = objc_mutex_allocate();
     84 	Condition = objc_condition_allocate();
     85 
     86 	ATF_CHECK_EQ(0, IsMultithreaded);
     87 
     88 	rv = objc_thread_detach(@selector(start), o, nil);
     89 	printf("detach value: %p\n", rv);
     90 	assert(rv != NULL);
     91 
     92 	objc_mutex_lock(Mutex);
     93 	objc_condition_wait(Condition, Mutex);
     94 	objc_mutex_unlock(Mutex);
     95 
     96 	ATF_CHECK_EQ(1, IsMultithreaded);
     97 	printf("Shutting down\n");
     98 }
     99 
    100 ATF_TP_ADD_TCS(tp)
    101 {
    102 
    103 	ATF_TP_ADD_TC(tp, thread_callback);
    104 
    105 	return atf_no_error();
    106 }
    107