34 lines
626 B
C
34 lines
626 B
C
#include <stdio.h>
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#include <stdatomic.h>
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#include <pthread.h>
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atomic_int counter = 5; //원자적 변수
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void* producer(void* arg){
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for(int i = 0; i < 1000000; i++){
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atomic_fetch_add(&counter, 1);
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}
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return NULL;
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}
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void *consumer(void* arg){
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for(int i = 0; i < 1000000; i++){
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atomic_fetch_sub(&counter, 1);
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}
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return NULL;
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}
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int main(){
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pthread_t t1, t2;
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pthread_create(&t1, NULL, producer, NULL);
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pthread_create(&t2, NULL, consumer, NULL);
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pthread_join(t1, NULL);
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pthread_join(t2, NULL);
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printf("최종 Counter 값 : %d\n", counter);
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return 0;
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} |