#include #include #include #include int m; pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; pthread_cond_t cond; void* fn_t1(void* arg) { int xrand; while (1) { pthread_mutex_lock(&mutex); if (m >= 1 && m <= 5) { xrand = (rand() % 10) + 1; printf("Thread 1: (%d, %d)\n", m, xrand); m = xrand; pthread_cond_broadcast(&cond); pthread_mutex_unlock(&mutex); } else { pthread_mutex_unlock(&mutex); pthread_cond_wait(&cond, &mutex); } } pthread_exit(NULL); } void* fn_t2(void* arg) { int xrand; while (1) { pthread_mutex_lock(&mutex); if (m >= 6 && m <= 10) { xrand = (rand() % 10) + 1; printf("Thread 2: (%d, %d)\n", m, xrand); m = xrand; pthread_cond_broadcast(&cond); pthread_mutex_unlock(&mutex); } else { pthread_mutex_unlock(&mutex); pthread_cond_wait(&cond, &mutex); } } pthread_exit(NULL); } int main() { pthread_t th[2]; srand(time(NULL)); m = (rand() % 10) + 1; pthread_create(&th[0], NULL, (void*)&fn_t1, NULL); pthread_create(&th[1], NULL, (void*)&fn_t2, NULL); pthread_join(th[0], NULL); pthread_join(th[1], NULL); return 0; }