33 lines
661 B
C
33 lines
661 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include "common.h"
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#include "common_threads.h"
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volatile int counter = 0;
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int loops;
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void *worker(void *arg) {
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int i;
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for (i = 0; i < loops; i++) {
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counter++;
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}
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return NULL;
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}
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int main(int argc, char *argv[]) {
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if (argc != 2) {
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fprintf(stderr, "usage: threads <loops>\n");
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exit(1);
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}
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loops = atoi(argv[1]);
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pthread_t p1, p2;
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printf("Initial value : %d\n", counter);
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Pthread_create(&p1, NULL, worker, NULL);
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Pthread_create(&p2, NULL, worker, NULL);
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Pthread_join(p1, NULL);
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Pthread_join(p2, NULL);
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printf("Final value : %d\n", counter);
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return 0;
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}
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