WebSVN – HelenOS-historic – Diff – /kernel/trunk/test/synch/rwlock4/test.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/atomic.h>
#include <print.h>
#include <proc/thread.h>
#include <arch/types.h>
#include <arch/context.h>
#include <context.h>
#include <panic.h>
 
#include <synch/waitq.h>
#include <synch/rwlock.h>
#include <synch/synch.h>
#include <synch/spinlock.h>
 
#define READERS     50
#define WRITERS     50
 
static rwlock_t rwlock;
 
SPINLOCK_INITIALIZE(lock);
 
static waitq_t can_start;
 
__u32 seed = 0xdeadbeef;
 
static __u32 random(__u32 max);
 
static void writer(void *arg);
static void reader(void *arg);
static void failed(void);
 
__u32 random(__u32 max)
{
    __u32 rc;
 
    spinlock_lock(&lock);  
    rc = seed % max;
    seed = (((seed<<2) ^ (seed>>2)) * 487) + rc;
    spinlock_unlock(&lock);
    return rc;
}
 
 
void writer(void *arg)
{
    int rc, to;
    waitq_sleep(&can_start);
 
    to = random(40000);
    printf("cpu%d, tid %d w+ (%d)\n", CPU->id, THREAD->tid, to);
    rc = rwlock_write_lock_timeout(&rwlock, to);
    if (SYNCH_FAILED(rc)) {
        printf("cpu%d, tid %d w!\n", CPU->id, THREAD->tid);
        return;
    };
    printf("cpu%d, tid %d w=\n", CPU->id, THREAD->tid);
 
    if (rwlock.readers_in) panic("Oops.");
    thread_usleep(random(1000000));
    if (rwlock.readers_in) panic("Oops."); 
 
    rwlock_write_unlock(&rwlock);
    printf("cpu%d, tid %d w-\n", CPU->id, THREAD->tid);
}
 
void reader(void *arg)
{
    int rc, to;
    waitq_sleep(&can_start);
   
    to = random(2000);
    printf("cpu%d, tid %d r+ (%d)\n", CPU->id, THREAD->tid, to);
    rc = rwlock_read_lock_timeout(&rwlock, to);
    if (SYNCH_FAILED(rc)) {
        printf("cpu%d, tid %d r!\n", CPU->id, THREAD->tid);
        return;
    }
    printf("cpu%d, tid %d r=\n", CPU->id, THREAD->tid);
    thread_usleep(30000);
    rwlock_read_unlock(&rwlock);
    printf("cpu%d, tid %d r-\n", CPU->id, THREAD->tid);    
}
 
void failed(void)
{
    printf("Test failed prematurely.\n");
    thread_exit();
}
 
void test(void)
{
    context_t ctx;
    __u32 i, k;
   
    printf("Read/write locks test #4\n");
   
    waitq_initialize(&can_start);
    rwlock_initialize(&rwlock);
   
 
   
    for (; ;) {
        thread_t *thrd;
       
        context_save(&ctx);
        printf("sp=%X, readers_in=%d\n", ctx.sp, rwlock.readers_in);
       
        k = random(7) + 1;
        printf("Creating %d readers\n", k);
        for (i=0; i<k; i++) {
            thrd = thread_create(reader, NULL, TASK, 0, "reader");
            if (thrd)
                thread_ready(thrd);
            else
                failed();
        }
 
        k = random(5) + 1;
        printf("Creating %d writers\n", k);
        for (i=0; i<k; i++) {
            thrd = thread_create(writer, NULL, TASK, 0, "writer");
            if (thrd)
                thread_ready(thrd);
            else
                failed();
        }
       
        thread_usleep(20000);
        waitq_wakeup(&can_start, WAKEUP_ALL);
    }      
 
}
 

Rev 625	Rev 1062
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/atomic.h>	31	#include <arch/atomic.h>
32	#include <print.h>	32	#include <print.h>
33	#include <proc/thread.h>	33	#include <proc/thread.h>
34	#include <arch/types.h>	34	#include <arch/types.h>
35	#include <arch/context.h>	35	#include <arch/context.h>
36	#include <context.h>	36	#include <context.h>
37	#include <panic.h>	37	#include <panic.h>
38		38
39	#include <synch/waitq.h>	39	#include <synch/waitq.h>
40	#include <synch/rwlock.h>	40	#include <synch/rwlock.h>
41	#include <synch/synch.h>	41	#include <synch/synch.h>
42	#include <synch/spinlock.h>	42	#include <synch/spinlock.h>
43		43
44	#define READERS 50	44	#define READERS 50
45	#define WRITERS 50	45	#define WRITERS 50
46		46
47	static rwlock_t rwlock;	47	static rwlock_t rwlock;
48		48
49	SPINLOCK_INITIALIZE(lock);	49	SPINLOCK_INITIALIZE(lock);
50		50
51	static waitq_t can_start;	51	static waitq_t can_start;
52		52
53	__u32 seed = 0xdeadbeef;	53	__u32 seed = 0xdeadbeef;
54		54
55	static __u32 random(__u32 max);	55	static __u32 random(__u32 max);
56		56
57	static void writer(void *arg);	57	static void writer(void *arg);
58	static void reader(void *arg);	58	static void reader(void *arg);
59	static void failed(void);	59	static void failed(void);
60		60
61	__u32 random(__u32 max)	61	__u32 random(__u32 max)
62	{	62	{
63	__u32 rc;	63	__u32 rc;
64		64
65	spinlock_lock(&lock);	65	spinlock_lock(&lock);
66	rc = seed % max;	66	rc = seed % max;
67	seed = (((seed<<2) ^ (seed>>2)) * 487) + rc;	67	seed = (((seed<<2) ^ (seed>>2)) * 487) + rc;
68	spinlock_unlock(&lock);	68	spinlock_unlock(&lock);
69	return rc;	69	return rc;
70	}	70	}
71		71
72		72
73	void writer(void *arg)	73	void writer(void *arg)
74	{	74	{
75	int rc, to;	75	int rc, to;
76	waitq_sleep(&can_start);	76	waitq_sleep(&can_start);
77		77
78	to = random(40000);	78	to = random(40000);
79	printf("cpu%d, tid %d w+ (%d)\n", CPU->id, THREAD->tid, to);	79	printf("cpu%d, tid %d w+ (%d)\n", CPU->id, THREAD->tid, to);
80	rc = rwlock_write_lock_timeout(&rwlock, to);	80	rc = rwlock_write_lock_timeout(&rwlock, to);
81	if (SYNCH_FAILED(rc)) {	81	if (SYNCH_FAILED(rc)) {
82	printf("cpu%d, tid %d w!\n", CPU->id, THREAD->tid);	82	printf("cpu%d, tid %d w!\n", CPU->id, THREAD->tid);
83	return;	83	return;
84	};	84	};
85	printf("cpu%d, tid %d w=\n", CPU->id, THREAD->tid);	85	printf("cpu%d, tid %d w=\n", CPU->id, THREAD->tid);
86		86
87	if (rwlock.readers_in) panic("Oops.");	87	if (rwlock.readers_in) panic("Oops.");
88	thread_usleep(random(1000000));	88	thread_usleep(random(1000000));
89	if (rwlock.readers_in) panic("Oops.");	89	if (rwlock.readers_in) panic("Oops.");
90		90
91	rwlock_write_unlock(&rwlock);	91	rwlock_write_unlock(&rwlock);
92	printf("cpu%d, tid %d w-\n", CPU->id, THREAD->tid);	92	printf("cpu%d, tid %d w-\n", CPU->id, THREAD->tid);
93	}	93	}
94		94
95	void reader(void *arg)	95	void reader(void *arg)
96	{	96	{
97	int rc, to;	97	int rc, to;
98	waitq_sleep(&can_start);	98	waitq_sleep(&can_start);
99		99
100	to = random(2000);	100	to = random(2000);
101	printf("cpu%d, tid %d r+ (%d)\n", CPU->id, THREAD->tid, to);	101	printf("cpu%d, tid %d r+ (%d)\n", CPU->id, THREAD->tid, to);
102	rc = rwlock_read_lock_timeout(&rwlock, to);	102	rc = rwlock_read_lock_timeout(&rwlock, to);
103	if (SYNCH_FAILED(rc)) {	103	if (SYNCH_FAILED(rc)) {
104	printf("cpu%d, tid %d r!\n", CPU->id, THREAD->tid);	104	printf("cpu%d, tid %d r!\n", CPU->id, THREAD->tid);
105	return;	105	return;
106	}	106	}
107	printf("cpu%d, tid %d r=\n", CPU->id, THREAD->tid);	107	printf("cpu%d, tid %d r=\n", CPU->id, THREAD->tid);
108	thread_usleep(30000);	108	thread_usleep(30000);
109	rwlock_read_unlock(&rwlock);	109	rwlock_read_unlock(&rwlock);
110	printf("cpu%d, tid %d r-\n", CPU->id, THREAD->tid);	110	printf("cpu%d, tid %d r-\n", CPU->id, THREAD->tid);
111	}	111	}
112		112
113	void failed(void)	113	void failed(void)
114	{	114	{
115	printf("Test failed prematurely.\n");	115	printf("Test failed prematurely.\n");
116	thread_exit();	116	thread_exit();
117	}	117	}
118		118
119	void test(void)	119	void test(void)
120	{	120	{
121	context_t ctx;	121	context_t ctx;
122	__u32 i, k;	122	__u32 i, k;
123		123
124	printf("Read/write locks test #4\n");	124	printf("Read/write locks test #4\n");
125		125
126	waitq_initialize(&can_start);	126	waitq_initialize(&can_start);
127	rwlock_initialize(&rwlock);	127	rwlock_initialize(&rwlock);
128		128
129		129
130		130
131	for (; ;) {	131	for (; ;) {
132	thread_t *thrd;	132	thread_t *thrd;
133		133
134	context_save(&ctx);	134	context_save(&ctx);
135	printf("sp=%X, readers_in=%d\n", ctx.sp, rwlock.readers_in);	135	printf("sp=%X, readers_in=%d\n", ctx.sp, rwlock.readers_in);
136		136
137	k = random(7) + 1;	137	k = random(7) + 1;
138	printf("Creating %d readers\n", k);	138	printf("Creating %d readers\n", k);
139	for (i=0; i<k; i++) {	139	for (i=0; i<k; i++) {
140	thrd = thread_create(reader, NULL, TASK, 0);	140	thrd = thread_create(reader, NULL, TASK, 0, "reader");
141	if (thrd)	141	if (thrd)
142	thread_ready(thrd);	142	thread_ready(thrd);
143	else	143	else
144	failed();	144	failed();
145	}	145	}
146		146
147	k = random(5) + 1;	147	k = random(5) + 1;
148	printf("Creating %d writers\n", k);	148	printf("Creating %d writers\n", k);
149	for (i=0; i<k; i++) {	149	for (i=0; i<k; i++) {
150	thrd = thread_create(writer, NULL, TASK, 0);	150	thrd = thread_create(writer, NULL, TASK, 0, "writer");
151	if (thrd)	151	if (thrd)
152	thread_ready(thrd);	152	thread_ready(thrd);
153	else	153	else
154	failed();	154	failed();
155	}	155	}
156		156
157	thread_usleep(20000);	157	thread_usleep(20000);
158	waitq_wakeup(&can_start, WAKEUP_ALL);	158	waitq_wakeup(&can_start, WAKEUP_ALL);
159	}	159	}
160		160
161	}	161	}
162		162

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/test/synch/rwlock4/test.c – Rev 625 → 1062