1 2 #include <stdio.h> 3 #include <assert.h> 4 #include <pthread.h> 5 6 int main ( void ) 7 { 8 const int n = 100000; 9 int i, r; 10 pthread_mutex_t mx = PTHREAD_MUTEX_INITIALIZER; 11 printf("begin %d lock--unlocks\n", n); 12 for (i = 0; i < n; i++) { 13 r = pthread_mutex_lock(&mx); 14 r |= pthread_mutex_unlock(&mx); 15 assert(r == 0); 16 } 17 printf("done %d lock--unlocks\n", n); 18 return 0; 19 } 20
