1 #include <pthread.h> 2 #include <stdlib.h> 3 #include <stdio.h> 4 5 const int N = 1000; 6 void *x[N]; 7 8 void *Thread1(void *unused) { 9 for (int i = 0; i < N; i++) { 10 fprintf(stderr, "%s %d\n", __func__, i); 11 free(x[i]); 12 } 13 return NULL; 14 } 15 16 void *Thread2(void *unused) { 17 for (int i = 0; i < N; i++) { 18 fprintf(stderr, "%s %d\n", __func__, i); 19 free(x[i]); 20 } 21 return NULL; 22 } 23 24 int main() { 25 for (int i = 0; i < N; i++) 26 x[i] = malloc(128); 27 pthread_t t[2]; 28 pthread_create(&t[0], 0, Thread1, 0); 29 pthread_create(&t[1], 0, Thread2, 0); 30 pthread_join(t[0], 0); 31 pthread_join(t[1], 0); 32 } 33
