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#include <stdio.h>
#include <stdlib.h>
#include <threads.h>

#define LOOP_COUNT 1000000
#define THREAD_COUNT 10


// La fonction sur laquelle vont démarrer nos dix threads.
int threadMain( void * data ) {
    long threadIndex = (long) data;
    for ( int i=0; i<LOOP_COUNT; i++ ) {
        printf( "Thread %ld affiche %d\n", threadIndex, i );
    }
    printf( "Thread %ld terminé\n", threadIndex );
    return thrd_success;
}


int main() {

    // On réserve la mémoire pour dix descripteurs de threads.
    thrd_t threads[10];

    // On crée nos 10 threads.
    for( int i=0; i<THREAD_COUNT; i++ ) {
        if ( thrd_create( &threads[i], threadMain, (void *)(long)i ) != thrd_success ) {
            fprintf( stderr, "Impossible de créer le thread %d\n", i );
            return EXIT_FAILURE;
        }
    }

    // On attends que les dix threads aient terminés leur traitement.
    for( int i=0; i<THREAD_COUNT; i++ ) {
        int threadResultCode;
        if ( thrd_join( threads[i], &threadResultCode ) == thrd_error ) {
            fprintf( stderr, "Impossible d'attendre le thread %d\n", i );
            return EXIT_FAILURE;
        }
        if ( threadResultCode != 0 ) {
            fprintf( stderr, "Le thread %d a terminé anormalement\n", i );
        }
    }

    // On sort du programme.
    printf( "Le thread initial/principal s'arrête.\n" );
    return EXIT_SUCCESS;
}