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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 <atomic.h> |
31 | #include <atomic.h> |
32 | #include <print.h> |
32 | #include <print.h> |
33 | #include <proc/thread.h> |
33 | #include <proc/thread.h> |
34 | 34 | ||
35 | #include <synch/waitq.h> |
35 | #include <synch/waitq.h> |
36 | #include <synch/rwlock.h> |
36 | #include <synch/rwlock.h> |
37 | 37 | ||
38 | #define READERS 50 |
38 | #define READERS 50 |
39 | #define WRITERS 50 |
39 | #define WRITERS 50 |
40 | 40 | ||
41 | static rwlock_t rwlock; |
41 | static rwlock_t rwlock; |
42 | 42 | ||
43 | static waitq_t can_start; |
43 | static waitq_t can_start; |
44 | static atomic_t items_read; |
44 | static atomic_t items_read; |
45 | static atomic_t items_written; |
45 | static atomic_t items_written; |
46 | 46 | ||
47 | static void writer(void *arg); |
47 | static void writer(void *arg); |
48 | static void reader(void *arg); |
48 | static void reader(void *arg); |
49 | static void failed(void); |
49 | static void failed(void); |
50 | 50 | ||
51 | void writer(void *arg) |
51 | void writer(void *arg) |
52 | { |
52 | { |
53 | thread_detach(THREAD); |
53 | thread_detach(THREAD); |
54 | 54 | ||
55 | waitq_sleep(&can_start); |
55 | waitq_sleep(&can_start); |
56 | 56 | ||
57 | rwlock_write_lock(&rwlock); |
57 | rwlock_write_lock(&rwlock); |
58 | atomic_inc(&items_written); |
58 | atomic_inc(&items_written); |
59 | rwlock_write_unlock(&rwlock); |
59 | rwlock_write_unlock(&rwlock); |
60 | } |
60 | } |
61 | 61 | ||
62 | void reader(void *arg) |
62 | void reader(void *arg) |
63 | { |
63 | { |
64 | thread_detach(THREAD); |
64 | thread_detach(THREAD); |
65 | 65 | ||
66 | waitq_sleep(&can_start); |
66 | waitq_sleep(&can_start); |
67 | 67 | ||
68 | rwlock_read_lock(&rwlock); |
68 | rwlock_read_lock(&rwlock); |
69 | atomic_inc(&items_read); |
69 | atomic_inc(&items_read); |
70 | rwlock_read_unlock(&rwlock); |
70 | rwlock_read_unlock(&rwlock); |
71 | } |
71 | } |
72 | 72 | ||
73 | void failed(void) |
73 | void failed(void) |
74 | { |
74 | { |
75 | printf("Test failed prematurely.\n"); |
75 | printf("Test failed prematurely.\n"); |
76 | thread_exit(); |
76 | thread_exit(); |
77 | } |
77 | } |
78 | 78 | ||
79 | void test(void) |
79 | void test_rwlock5(void) |
80 | { |
80 | { |
81 | int i, j, k; |
81 | int i, j, k; |
82 | count_t readers, writers; |
82 | count_t readers, writers; |
83 | 83 | ||
84 | printf("Read/write locks test #5\n"); |
84 | printf("Read/write locks test #5\n"); |
85 | 85 | ||
86 | waitq_initialize(&can_start); |
86 | waitq_initialize(&can_start); |
87 | rwlock_initialize(&rwlock); |
87 | rwlock_initialize(&rwlock); |
88 | 88 | ||
89 | for (i=1; i<=3; i++) { |
89 | for (i=1; i<=3; i++) { |
90 | thread_t *thrd; |
90 | thread_t *thrd; |
91 | 91 | ||
92 | atomic_set(&items_read, 0); |
92 | atomic_set(&items_read, 0); |
93 | atomic_set(&items_written, 0); |
93 | atomic_set(&items_written, 0); |
94 | 94 | ||
95 | readers = i*READERS; |
95 | readers = i*READERS; |
96 | writers = (4-i)*WRITERS; |
96 | writers = (4-i)*WRITERS; |
97 | 97 | ||
98 | printf("Creating %ld readers and %ld writers...", readers, writers); |
98 | printf("Creating %ld readers and %ld writers...", readers, writers); |
99 | 99 | ||
100 | for (j=0; j<(READERS+WRITERS)/2; j++) { |
100 | for (j=0; j<(READERS+WRITERS)/2; j++) { |
101 | for (k=0; k<i; k++) { |
101 | for (k=0; k<i; k++) { |
102 | thrd = thread_create(reader, NULL, TASK, 0, "reader"); |
102 | thrd = thread_create(reader, NULL, TASK, 0, "reader"); |
103 | if (thrd) |
103 | if (thrd) |
104 | thread_ready(thrd); |
104 | thread_ready(thrd); |
105 | else |
105 | else |
106 | failed(); |
106 | failed(); |
107 | } |
107 | } |
108 | for (k=0; k<(4-i); k++) { |
108 | for (k=0; k<(4-i); k++) { |
109 | thrd = thread_create(writer, NULL, TASK, 0, "writer"); |
109 | thrd = thread_create(writer, NULL, TASK, 0, "writer"); |
110 | if (thrd) |
110 | if (thrd) |
111 | thread_ready(thrd); |
111 | thread_ready(thrd); |
112 | else |
112 | else |
113 | failed(); |
113 | failed(); |
114 | } |
114 | } |
115 | } |
115 | } |
116 | 116 | ||
117 | printf("ok\n"); |
117 | printf("ok\n"); |
118 | 118 | ||
119 | thread_sleep(1); |
119 | thread_sleep(1); |
120 | waitq_wakeup(&can_start, WAKEUP_ALL); |
120 | waitq_wakeup(&can_start, WAKEUP_ALL); |
121 | 121 | ||
122 | while (items_read.count != readers || items_written.count != writers) { |
122 | while (items_read.count != readers || items_written.count != writers) { |
123 | printf("%zd readers remaining, %zd writers remaining, readers_in=%zd\n", readers - items_read.count, writers - items_written.count, rwlock.readers_in); |
123 | printf("%zd readers remaining, %zd writers remaining, readers_in=%zd\n", readers - items_read.count, writers - items_written.count, rwlock.readers_in); |
124 | thread_usleep(100000); |
124 | thread_usleep(100000); |
125 | } |
125 | } |
126 | } |
126 | } |
127 | printf("Test passed.\n"); |
127 | printf("Test passed.\n"); |
128 | } |
128 | } |
129 | 129 |