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

1 vote306 views1 answer
Last element in flutter
C
0 vote249 views1 answer
Pop and push shows black screen which needs to be pressed back flutter
C
0 vote249 views1 answer
Parsing using strtok
C
1 vote224 views1 answer
Material ui Roboto Font
C
0 vote233 views1 answer
Come fare un programma in c con cui interagire
C
-1 vote238 views1 answer
Code to declare a n array and store string in it c
C
0 vote241 views1 answer
How to search in a file in c
C
0 vote229 views1 answer
C change value of const
C
0 vote251 views2 answers
C read file from command line
C
0 vote262 views1 answer
Tkinter create_line
C