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Commit | Line | Data |
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196939fb GY |
1 | #include <pthread.h> |
2 | #include <stdio.h> | |
3 | #include <unistd.h> | |
4 | ||
5 | static int count = 0; | |
6 | ||
7 | static void * | |
8 | thread_add_one (void *arg) | |
9 | { | |
10 | int tmp; | |
11 | pthread_spinlock_t *lock = (pthread_spinlock_t *) arg; | |
12 | ||
13 | /* When do_test holds the lock for 1 sec, the two thread will be | |
14 | in contention for the lock. */ | |
15 | if (pthread_spin_lock (lock) != 0) | |
16 | { | |
17 | puts ("thread_add_one(): spin_lock failed"); | |
18 | pthread_exit ((void *) 1l); | |
19 | } | |
20 | ||
21 | /* sleep 1s before modifying count */ | |
22 | tmp = count; | |
23 | sleep (1); | |
24 | count = tmp + 1; | |
25 | ||
26 | if (pthread_spin_unlock (lock) != 0) | |
27 | { | |
28 | puts ("thread_add_one(): spin_unlock failed"); | |
29 | pthread_exit ((void *) 1l); | |
30 | } | |
31 | ||
32 | return NULL; | |
33 | } | |
34 | ||
35 | static int | |
36 | do_test (void) | |
37 | { | |
38 | pthread_t thr1, thr2; | |
39 | pthread_spinlock_t lock; | |
40 | int tmp; | |
41 | ||
42 | if (pthread_spin_init (&lock, PTHREAD_PROCESS_PRIVATE) != 0) | |
43 | { | |
44 | puts ("spin_init failed"); | |
45 | return 1; | |
46 | } | |
47 | ||
48 | if (pthread_spin_lock (&lock) != 0) | |
49 | { | |
50 | puts ("1st spin_lock failed"); | |
51 | return 1; | |
52 | } | |
53 | ||
54 | if (pthread_create (&thr1, NULL, thread_add_one, (void *) &lock) != 0) | |
55 | { | |
56 | puts ("1st pthread_create failed"); | |
57 | return 1; | |
58 | } | |
59 | ||
60 | if (pthread_create (&thr2, NULL, thread_add_one, (void *) &lock) != 0) | |
61 | { | |
62 | puts ("2nd pthread_create failed"); | |
63 | return 1; | |
64 | } | |
65 | ||
66 | /* sleep 1s before modifying count */ | |
67 | tmp = count; | |
68 | sleep (1); | |
69 | count = tmp + 1; | |
70 | ||
71 | if (pthread_spin_unlock (&lock) != 0) | |
72 | { | |
73 | puts ("1st spin_unlock failed"); | |
74 | return 1; | |
75 | } | |
76 | ||
77 | void *status; | |
78 | if (pthread_join (thr1, &status) != 0) | |
79 | { | |
80 | puts ("1st pthread_join failed"); | |
81 | return 1; | |
82 | } | |
83 | if (status != NULL) | |
84 | { | |
85 | puts ("failure in the 1st thread"); | |
86 | return 1; | |
87 | } | |
88 | if (pthread_join (thr2, &status) != 0) | |
89 | { | |
90 | puts ("2nd pthread_join failed"); | |
91 | return 1; | |
92 | } | |
93 | if (status != NULL) | |
94 | { | |
95 | puts ("failure in the 2nd thread"); | |
96 | return 1; | |
97 | } | |
98 | ||
99 | if (count != 3) | |
100 | { | |
101 | printf ("count is %d, should be 3\n", count); | |
102 | return 1; | |
103 | } | |
104 | return 0; | |
105 | } | |
106 | ||
107 | #define TIMEOUT 5 | |
108 | #define TEST_FUNCTION do_test () | |
109 | #include "../test-skeleton.c" |