WebSVN – HelenOS – Diff – /branches/sparc/kernel/test/synch/rwlock3.c


/*
 * Copyright (c) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <test.h>
#include <arch.h>
#include <arch/asm.h>
#include <atomic.h>
#include <print.h>
#include <proc/thread.h>
 
#include <synch/rwlock.h>
 
#define THREADS 4
 
static atomic_t thread_count;
static rwlock_t rwlock;
static bool sh_quiet;
 
static void reader(void *arg)
{
    thread_detach(THREAD);
   
    if (!sh_quiet)
        printf("cpu%u, tid %" PRIu64 ": trying to lock rwlock for reading....\n", CPU->id, THREAD->tid);
   
    rwlock_read_lock(&rwlock);
    rwlock_read_unlock(&rwlock);
   
    if (!sh_quiet) {
        printf("cpu%u, tid %" PRIu64 ": success\n", CPU->id, THREAD->tid);         
        printf("cpu%u, tid %" PRIu64 ": trying to lock rwlock for writing....\n", CPU->id, THREAD->tid);       
    }
 
    rwlock_write_lock(&rwlock);
    rwlock_write_unlock(&rwlock);
   
    if (!sh_quiet)
        printf("cpu%u, tid %" PRIu64 ": success\n", CPU->id, THREAD->tid);
   
    atomic_dec(&thread_count);
}
 
char * test_rwlock3(bool quiet)
{
    int i;
    thread_t *thrd;
    sh_quiet = quiet;
   
    atomic_set(&thread_count, THREADS);
   
    rwlock_initialize(&rwlock);
    rwlock_write_lock(&rwlock);
   
    for (i = 0; i < THREADS; i++) {
        thrd = thread_create(reader, NULL, TASK, 0, "reader", false);
        if (thrd)
            thread_ready(thrd);
        else if (!quiet)
            printf("Could not create reader %d\n", i);
    }
 
    thread_sleep(1);
    rwlock_write_unlock(&rwlock);
   
    while (atomic_get(&thread_count) > 0) {
        if (!quiet)
            printf("Threads left: %ld\n", atomic_get(&thread_count));
        thread_sleep(1);
    }
   
    return NULL;
}
 

Rev 3343	Rev 3862
1	/*	1	/*
2	* Copyright (c) 2001-2004 Jakub Jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <test.h>	29	#include <test.h>
30	#include <arch.h>	30	#include <arch.h>
-		31	#include <arch/asm.h>
31	#include <atomic.h>	32	#include <atomic.h>
32	#include <print.h>	33	#include <print.h>
33	#include <proc/thread.h>	34	#include <proc/thread.h>
34		35
35	#include <synch/rwlock.h>	36	#include <synch/rwlock.h>
36		37
37	#define THREADS 4	38	#define THREADS 4
38		39
39	static atomic_t thread_count;	40	static atomic_t thread_count;
40	static rwlock_t rwlock;	41	static rwlock_t rwlock;
41	static bool sh_quiet;	42	static bool sh_quiet;
42		43
43	static void reader(void *arg)	44	static void reader(void *arg)
44	{	45	{
45	thread_detach(THREAD);	46	thread_detach(THREAD);
46		47
47	if (!sh_quiet)	48	if (!sh_quiet)
48	printf("cpu%u, tid %" PRIu64 ": trying to lock rwlock for reading....\n", CPU->id, THREAD->tid);	49	printf("cpu%u, tid %" PRIu64 ": trying to lock rwlock for reading....\n", CPU->id, THREAD->tid);
49		50
50	rwlock_read_lock(&rwlock);	51	rwlock_read_lock(&rwlock);
51	rwlock_read_unlock(&rwlock);	52	rwlock_read_unlock(&rwlock);
52		53
53	if (!sh_quiet) {	54	if (!sh_quiet) {
54	printf("cpu%u, tid %" PRIu64 ": success\n", CPU->id, THREAD->tid);	55	printf("cpu%u, tid %" PRIu64 ": success\n", CPU->id, THREAD->tid);
55	printf("cpu%u, tid %" PRIu64 ": trying to lock rwlock for writing....\n", CPU->id, THREAD->tid);	56	printf("cpu%u, tid %" PRIu64 ": trying to lock rwlock for writing....\n", CPU->id, THREAD->tid);
56	}	57	}
57		58
58	rwlock_write_lock(&rwlock);	59	rwlock_write_lock(&rwlock);
59	rwlock_write_unlock(&rwlock);	60	rwlock_write_unlock(&rwlock);
60		61
61	if (!sh_quiet)	62	if (!sh_quiet)
62	printf("cpu%u, tid %" PRIu64 ": success\n", CPU->id, THREAD->tid);	63	printf("cpu%u, tid %" PRIu64 ": success\n", CPU->id, THREAD->tid);
63		64
64	atomic_dec(&thread_count);	65	atomic_dec(&thread_count);
65	}	66	}
66		67
67	char * test_rwlock3(bool quiet)	68	char * test_rwlock3(bool quiet)
68	{	69	{
69	int i;	70	int i;
70	thread_t *thrd;	71	thread_t *thrd;
71	sh_quiet = quiet;	72	sh_quiet = quiet;
72		73
73	atomic_set(&thread_count, THREADS);	74	atomic_set(&thread_count, THREADS);
74		75
75	rwlock_initialize(&rwlock);	76	rwlock_initialize(&rwlock);
76	rwlock_write_lock(&rwlock);	77	rwlock_write_lock(&rwlock);
77		78
78	for (i = 0; i < THREADS; i++) {	79	for (i = 0; i < THREADS; i++) {
79	thrd = thread_create(reader, NULL, TASK, 0, "reader", false);	80	thrd = thread_create(reader, NULL, TASK, 0, "reader", false);
80	if (thrd)	81	if (thrd)
81	thread_ready(thrd);	82	thread_ready(thrd);
82	else if (!quiet)	83	else if (!quiet)
83	printf("Could not create reader %d\n", i);	84	printf("Could not create reader %d\n", i);
84	}	85	}
85		86
86	thread_sleep(1);	87	thread_sleep(1);
87	rwlock_write_unlock(&rwlock);	88	rwlock_write_unlock(&rwlock);
88		89
89	while (atomic_get(&thread_count) > 0) {	90	while (atomic_get(&thread_count) > 0) {
90	if (!quiet)	91	if (!quiet)
91	printf("Threads left: %ld\n", atomic_get(&thread_count));	92	printf("Threads left: %ld\n", atomic_get(&thread_count));
92	thread_sleep(1);	93	thread_sleep(1);
93	}	94	}
94		95
95	return NULL;	96	return NULL;
96	}	97	}
97		98

Subversion Repositories HelenOS

(root)/branches/sparc/kernel/test/synch/rwlock3.c – Rev 3343 → 3862