Atomic variable c

#include <stdio.h>
#include <threads.h>
#include <stdatomic.h>

atomic_int acnt;
int cnt;

int f(void* thr_data)
{
    (void)thr_data;
    for(int n = 0; n < 1000; ++n) {
        ++cnt;
        ++acnt;
        // for this example, relaxed memory order is sufficient, e.g.
        // atomic_fetch_add_explicit(&acnt, 1, memory_order_relaxed);
    }
    return 0;
}

int main(void)
{
    thrd_t thr[10];
    for(int n = 0; n < 10; ++n)
        thrd_create(&thr[n], f, NULL);
    for(int n = 0; n < 10; ++n)
        thrd_join(thr[n], NULL);

    printf("The atomic counter is %u\n", acnt);
    printf("The non-atomic counter is %u\n", cnt);
}

Source: stackoverflow.com

Similar codes

0 vote411 views1 answer
C programming programiz
C
1 vote391 views1 answer
Same project on different monitor in intellij mac
C
0 vote383 views1 answer
Battlefield4u.com
C
0 vote406 views2 answers
C float to string
C
0 vote381 views1 answer
Run steam as root
C
0 vote416 views1 answer
Check if string is the same c
C
0 vote415 views1 answer
Iterate over vector with condition in rust
C
8 votes387 views1 answer
Syntax To Take Input In C
C
2 votes386 views1 answer
Terminal size in c
C
0 vote350 views1 answer
11*179*.9*1.35
C