Commit | Line | Data |
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ac260fd9 | 1 | #include <stdio.h> |
f69f195a MD |
2 | #include <pthread.h> |
3 | #include <stdlib.h> | |
41718ff9 | 4 | #include <string.h> |
f69f195a MD |
5 | #include <sys/types.h> |
6 | #include <sys/wait.h> | |
7 | #include <unistd.h> | |
8 | #include <stdio.h> | |
41718ff9 | 9 | #include <assert.h> |
ac260fd9 MD |
10 | #include "urcu.h" |
11 | ||
41718ff9 MD |
12 | struct test_array { |
13 | int a; | |
14 | int b; | |
15 | char c[200]; | |
16 | }; | |
17 | ||
18 | static struct test_array *test_rcu_pointer; | |
19 | ||
b1b5ce8f MD |
20 | #define NR_READ 10 |
21 | #define NR_WRITE 5 | |
f69f195a MD |
22 | |
23 | ||
24 | void *thr_reader(void *arg) | |
25 | { | |
41718ff9 MD |
26 | int qparity, i; |
27 | struct test_array *local_ptr; | |
28 | ||
f69f195a MD |
29 | printf("thread %s, thread id : %lu, pid %lu\n", |
30 | "reader", pthread_self(), getpid()); | |
31 | sleep(2); | |
32 | ||
33 | urcu_register_thread(); | |
34 | ||
b1b5ce8f | 35 | for (i = 0; i < 1000000; i++) { |
41718ff9 MD |
36 | qparity = rcu_read_lock(); |
37 | local_ptr = rcu_dereference(test_rcu_pointer); | |
38 | if (local_ptr) { | |
39 | assert(local_ptr->a == 8); | |
40 | assert(local_ptr->b == 12); | |
41 | assert(local_ptr->c[55] == 2); | |
42 | } | |
43 | rcu_read_unlock(qparity); | |
44 | } | |
f69f195a MD |
45 | |
46 | urcu_unregister_thread(); | |
41718ff9 | 47 | |
f69f195a MD |
48 | return ((void*)1); |
49 | ||
50 | } | |
51 | ||
52 | void *thr_writer(void *arg) | |
53 | { | |
54 | int i; | |
41718ff9 | 55 | struct test_array *new, *old; |
f69f195a MD |
56 | |
57 | printf("thread %s, thread id : %lu, pid %lu\n", | |
58 | "writer", pthread_self(), getpid()); | |
59 | sleep(2); | |
60 | ||
b1b5ce8f | 61 | for (i = 0; i < 1000000; i++) { |
41718ff9 MD |
62 | rcu_write_lock(); |
63 | new = malloc(sizeof(struct test_array)); | |
64 | old = test_rcu_pointer; | |
65 | if (old) { | |
66 | assert(old->a == 8); | |
67 | assert(old->b == 12); | |
68 | assert(old->c[55] == 2); | |
69 | } | |
70 | assert(new->a = 8); | |
71 | assert(new->b = 12); | |
72 | assert(new->c[55] = 2); | |
73 | old = urcu_publish_content(&test_rcu_pointer, new); | |
74 | rcu_write_unlock(); | |
75 | /* can be done after unlock */ | |
76 | free(old); | |
f69f195a MD |
77 | } |
78 | ||
79 | return ((void*)2); | |
80 | } | |
ac260fd9 MD |
81 | |
82 | int main() | |
83 | { | |
f69f195a MD |
84 | int err; |
85 | pthread_t tid_reader[NR_READ], tid_writer[NR_WRITE]; | |
86 | void *tret; | |
87 | int i; | |
88 | ||
89 | for (i = 0; i < NR_READ; i++) { | |
90 | err = pthread_create(&tid_reader[i], NULL, thr_reader, NULL); | |
91 | if (err != 0) | |
92 | exit(1); | |
93 | } | |
94 | for (i = 0; i < NR_WRITE; i++) { | |
95 | err = pthread_create(&tid_writer[i], NULL, thr_writer, NULL); | |
96 | if (err != 0) | |
97 | exit(1); | |
98 | } | |
99 | ||
100 | sleep(10); | |
ac260fd9 | 101 | |
f69f195a MD |
102 | for (i = 0; i < NR_WRITE; i++) { |
103 | err = pthread_join(tid_reader[i], &tret); | |
104 | if (err != 0) | |
105 | exit(1); | |
106 | } | |
107 | for (i = 0; i < NR_WRITE; i++) { | |
108 | err = pthread_join(tid_writer[i], &tret); | |
109 | if (err != 0) | |
110 | exit(1); | |
111 | } | |
ac260fd9 | 112 | |
f69f195a | 113 | return 0; |
ac260fd9 | 114 | } |