jsgf | 12475f6 | 2003-10-16 06:09:41 +0000 | [diff] [blame] | 1 | /* All OK */ |
| 2 | |
| 3 | #include <pthread.h> |
| 4 | |
| 5 | static pthread_mutex_t mx = PTHREAD_MUTEX_INITIALIZER; |
| 6 | |
| 7 | static int shared; |
| 8 | |
| 9 | static void *th(void *v) |
| 10 | { |
| 11 | pthread_mutex_lock(&mx); |
| 12 | shared++; |
| 13 | pthread_mutex_unlock(&mx); |
| 14 | |
| 15 | return 0; |
| 16 | } |
| 17 | |
| 18 | int main() |
| 19 | { |
| 20 | pthread_t a, b; |
| 21 | |
| 22 | pthread_mutex_lock(&mx); |
| 23 | pthread_mutex_unlock(&mx); |
| 24 | |
| 25 | pthread_create(&a, NULL, th, NULL); |
| 26 | pthread_create(&b, NULL, th, NULL); |
| 27 | |
| 28 | pthread_join(a, NULL); |
| 29 | pthread_join(b, NULL); |
| 30 | |
| 31 | return 0; |
| 32 | } |