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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 | { |
48 | { |
49 | thread_detach(THREAD); |
49 | thread_detach(THREAD); |
50 | 50 | ||
51 | waitq_sleep(&can_start); |
51 | waitq_sleep(&can_start); |
52 | 52 | ||
53 | rwlock_write_lock(&rwlock); |
53 | rwlock_write_lock(&rwlock); |
54 | atomic_inc(&items_written); |
54 | atomic_inc(&items_written); |
55 | rwlock_write_unlock(&rwlock); |
55 | rwlock_write_unlock(&rwlock); |
56 | } |
56 | } |
57 | 57 | ||
58 | static void reader(void *arg) |
58 | static void reader(void *arg) |
59 | { |
59 | { |
60 | thread_detach(THREAD); |
60 | thread_detach(THREAD); |
61 | 61 | ||
62 | waitq_sleep(&can_start); |
62 | waitq_sleep(&can_start); |
63 | 63 | ||
64 | rwlock_read_lock(&rwlock); |
64 | rwlock_read_lock(&rwlock); |
65 | atomic_inc(&items_read); |
65 | atomic_inc(&items_read); |
66 | rwlock_read_unlock(&rwlock); |
66 | rwlock_read_unlock(&rwlock); |
67 | } |
67 | } |
68 | 68 | ||
69 | char * test_rwlock5(bool quiet) |
69 | char * test_rwlock5(bool quiet) |
70 | { |
70 | { |
71 | int i, j, k; |
71 | int i, j, k; |
72 | long readers, writers; |
72 | long readers, writers; |
73 | 73 | ||
74 | waitq_initialize(&can_start); |
74 | waitq_initialize(&can_start); |
75 | rwlock_initialize(&rwlock); |
75 | rwlock_initialize(&rwlock); |
76 | 76 | ||
77 | for (i = 1; i <= 3; i++) { |
77 | for (i = 1; i <= 3; i++) { |
78 | thread_t *thrd; |
78 | thread_t *thrd; |
79 | 79 | ||
80 | atomic_set(&items_read, 0); |
80 | atomic_set(&items_read, 0); |
81 | atomic_set(&items_written, 0); |
81 | atomic_set(&items_written, 0); |
82 | 82 | ||
83 | readers = i * READERS; |
83 | readers = i * READERS; |
84 | writers = (4 - i) * WRITERS; |
84 | writers = (4 - i) * WRITERS; |
85 | 85 | ||
86 | printf("Creating %ld readers and %ld writers...", readers, writers); |
86 | printf("Creating %ld readers and %ld writers...", readers, writers); |
87 | 87 | ||
88 | for (j = 0; j < (READERS + WRITERS) / 2; j++) { |
88 | for (j = 0; j < (READERS + WRITERS) / 2; j++) { |
89 | for (k = 0; k < i; k++) { |
89 | for (k = 0; k < i; k++) { |
90 | thrd = thread_create(reader, NULL, TASK, 0, "reader", false); |
90 | thrd = thread_create(reader, NULL, TASK, 0, "reader", false); |
91 | if (thrd) |
91 | if (thrd) |
92 | thread_ready(thrd); |
92 | thread_ready(thrd); |
93 | else |
93 | else |
94 | printf("Could not create reader %d\n", k); |
94 | printf("Could not create reader %d\n", k); |
95 | } |
95 | } |
96 | for (k = 0; k < (4 - i); k++) { |
96 | for (k = 0; k < (4 - i); k++) { |
97 | thrd = thread_create(writer, NULL, TASK, 0, "writer", false); |
97 | thrd = thread_create(writer, NULL, TASK, 0, "writer", false); |
98 | if (thrd) |
98 | if (thrd) |
99 | thread_ready(thrd); |
99 | thread_ready(thrd); |
100 | else |
100 | else |
101 | printf("Could not create writer %d\n", k); |
101 | printf("Could not create writer %d\n", k); |
102 | } |
102 | } |
103 | } |
103 | } |
104 | 104 | ||
105 | printf("ok\n"); |
105 | printf("ok\n"); |
106 | 106 | ||
107 | thread_sleep(1); |
107 | thread_sleep(1); |
108 | waitq_wakeup(&can_start, WAKEUP_ALL); |
108 | waitq_wakeup(&can_start, WAKEUP_ALL); |
109 | 109 | ||
110 | while ((items_read.count != readers) || (items_written.count != writers)) { |
110 | while ((items_read.count != readers) || (items_written.count != writers)) { |
111 | printf("%zd readers remaining, %zd writers remaining, readers_in=%zd\n", readers - items_read.count, writers - items_written.count, rwlock.readers_in); |
111 | printf("%d readers remaining, %d writers remaining, readers_in=%d\n", readers - items_read.count, writers - items_written.count, rwlock.readers_in); |
112 | thread_usleep(100000); |
112 | thread_usleep(100000); |
113 | } |
113 | } |
114 | } |
114 | } |
115 | 115 | ||
116 | return NULL; |
116 | return NULL; |
117 | } |
117 | } |
118 | 118 |