threadBase

/*
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/*
 * File:   main.cpp
 * Author: docenti
 *
 * Created on 7 ottobre 2019, 13:26
 */

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

//#define EXIT_FAILURE    -1
#define EXIT_SUCCESS    0

void* print_message_function( void *ptr );


int main()
{
    const char *message1 = "Threadd 1";
    const char *message2 = "Thread 2";
        // Create independent threads each of which will execute 'print_message_function'
    pthread_t thread1;
    int cond1 = pthread_create( &thread1, NULL, print_message_function, (void*) message1);
    if (cond1 != 0) {

        fprintf(stderr,"Error - pthread_create() return code: %d\n", cond1);
        exit(EXIT_FAILURE);
    }

    pthread_t thread2;
    int cond2 = pthread_create( &thread2, NULL, print_message_function, (void*) message2);
    if (cond2 != 0){
        fprintf(stderr,"Error - pthread_create() return code: %d\n", cond2);
        exit(EXIT_FAILURE);
    }

    printf("pthread_create() for thread 1 returns: %d\n", cond1);
    printf("pthread_create() for thread 2 returns: %d\n", cond2);

    // Attendiamo che i thread siano terminati prima di proseguire con la main.
    // Se non aspettassimo, rischieremmo di eseguire la exit() che terminerrebbe
    // il processo principale ma ache i thread prima che questi abbiano completato
    // naturalmente la loro esecuzione.

    pthread_join(thread1, NULL);
    pthread_join(thread2, NULL);

    exit(EXIT_SUCCESS);
}

void *print_message_function( void *ptr )
{
    char *message;
    message = (char *) ptr;
    printf("%s \n", message);
        return NULL;
}