1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | #include <pthread.h>
#include <stdio.h>
void* worker(void* arg) {
int *p_x = (int*)arg;
while(*p_x < 100) {
(*p_x)++;
}
printf("increment finished\n");
return NULL;
}
int main() {
int x = 0, y = 0;
printf("x: %d, y: %d\n", x, y);
pthread_t t1, t2;
pthread_create(&t1, NULL, worker, &x); // TODO: check if returns 0
// like calling worker(&x)
pthread_create(&t2, NULL, worker, &y); // TODO: check if returns 0
// like calling worker(&y)
// Three threads are active now.
// Wait for them to finish.
pthread_join(t1, NULL);
pthread_join(t2, NULL);
printf("x: %d, y: %d\n", x, y);
return 0;
}
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