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 vote202 views2 answers
192.168.0.102
C
0 vote212 views1 answer
Identifier bool is undefined in c
C
-2 votes188 views2 answers
Double pointers in c
C
0 vote189 views1 answer
KeyError: "['Adult Mortality' 'infant deaths' 'Alcohol' 'percentage expenditure'] not found in axis" site:stackoverflow.com
C
0 vote258 views1 answer
Show modal with cmd
C
1 vote320 views1 answer
Docker: Error response from daemon: could not select device driver "" with capabilities: [[gpu]].
C
48 votes442 views2 answers
Math.floor(Math.random() *10)
C
0 vote234 views1 answer
Strlen stop before '\0' or at
C
1 vote254 views2 answers
Print float in c
C
3 votes219 views1 answer
'int' is not a subtype of type 'double' dart
C