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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 <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 | 34 | ||
35 | #include <synch/rwlock.h> |
35 | #include <synch/rwlock.h> |
36 | 36 | ||
37 | #define READERS 50 |
37 | #define READERS 50 |
38 | #define WRITERS 50 |
38 | #define WRITERS 50 |
39 | 39 | ||
40 | static rwlock_t rwlock; |
40 | static rwlock_t rwlock; |
41 | 41 | ||
42 | static void reader(void *arg); |
42 | static void reader(void *arg); |
43 | static void failed(void *arg); |
43 | static void failed(void); |
44 | 44 | ||
45 | void reader(void *arg) |
45 | void reader(void *arg) |
46 | { |
46 | { |
47 | printf("cpu%d, tid %d: trying to lock rwlock for reading....\n", CPU->id, THREAD->tid); |
47 | printf("cpu%d, tid %d: trying to lock rwlock for reading....\n", CPU->id, THREAD->tid); |
48 | rwlock_read_lock(&rwlock); |
48 | rwlock_read_lock(&rwlock); |
49 | rwlock_read_unlock(&rwlock); |
49 | rwlock_read_unlock(&rwlock); |
50 | printf("cpu%d, tid %d: success\n", CPU->id, THREAD->tid); |
50 | printf("cpu%d, tid %d: success\n", CPU->id, THREAD->tid); |
51 | 51 | ||
52 | printf("cpu%d, tid %d: trying to lock rwlock for writing....\n", CPU->id, THREAD->tid); |
52 | printf("cpu%d, tid %d: trying to lock rwlock for writing....\n", CPU->id, THREAD->tid); |
53 | 53 | ||
54 | rwlock_write_lock(&rwlock); |
54 | rwlock_write_lock(&rwlock); |
55 | rwlock_write_unlock(&rwlock); |
55 | rwlock_write_unlock(&rwlock); |
56 | printf("cpu%d, tid %d: success\n", CPU->id, THREAD->tid); |
56 | printf("cpu%d, tid %d: success\n", CPU->id, THREAD->tid); |
57 | 57 | ||
58 | printf("Test passed.\n"); |
58 | printf("Test passed.\n"); |
59 | 59 | ||
60 | } |
60 | } |
61 | 61 | ||
62 | void failed(void) |
62 | void failed(void) |
63 | { |
63 | { |
64 | printf("Test failed prematurely.\n"); |
64 | printf("Test failed prematurely.\n"); |
65 | thread_exit(); |
65 | thread_exit(); |
66 | } |
66 | } |
67 | 67 | ||
68 | void test(void) |
68 | void test(void) |
69 | { |
69 | { |
70 | int i; |
70 | int i; |
71 | thread_t *thrd; |
71 | thread_t *thrd; |
72 | 72 | ||
73 | printf("Read/write locks test #2\n"); |
73 | printf("Read/write locks test #2\n"); |
74 | 74 | ||
75 | rwlock_initialize(&rwlock); |
75 | rwlock_initialize(&rwlock); |
76 | 76 | ||
77 | rwlock_write_lock(&rwlock); |
77 | rwlock_write_lock(&rwlock); |
78 | 78 | ||
79 | for (i=0; i<4; i++) { |
79 | for (i=0; i<4; i++) { |
80 | thrd = thread_create(reader, NULL, TASK, 0); |
80 | thrd = thread_create(reader, NULL, TASK, 0); |
81 | if (thrd) |
81 | if (thrd) |
82 | thread_ready(thrd); |
82 | thread_ready(thrd); |
83 | else |
83 | else |
84 | failed(); |
84 | failed(); |
85 | } |
85 | } |
86 | 86 | ||
87 | 87 | ||
88 | thread_sleep(1); |
88 | thread_sleep(1); |
89 | 89 | ||
90 | rwlock_write_unlock(&rwlock); |
90 | rwlock_write_unlock(&rwlock); |
91 | } |
91 | } |
92 | 92 |