thread_experiment.c

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <time.h>

#define ITERATIONS 1000000000000
#define UPDATE_INTERVAL 1000000000
#define NUM_THREADS 4

void* process_iterations(void* arg) {
    long start = *((long*)arg);
    long end = start + ITERATIONS / NUM_THREADS;

    for (long i = start; i <= end; ++i) {
        if (i % UPDATE_INTERVAL == 0) {
            printf("Estado de la iteración: %ld\n", i);
        }
    }

    return NULL;
}

int main() {
    pthread_t threads[NUM_THREADS];
    long thread_args[NUM_THREADS];

    clock_t start_time = clock();

    for (int i = 0; i < NUM_THREADS; ++i) {
        thread_args[i] = i * (ITERATIONS / NUM_THREADS) + 1;
        pthread_create(&threads[i], NULL, process_iterations, (void*)&thread_args[i]);
    }

    for (int i = 0; i < NUM_THREADS; ++i) {
        pthread_join(threads[i], NULL);
    }

    clock_t end_time = clock();
    double elapsed_time = (double)(end_time - start_time) / CLOCKS_PER_SEC;
    printf("Tiempo transcurrido: %lf segundos\n", elapsed_time);

    return 0;
}