#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/wait.h>
#include <time.h>

#define LEN 10000

// 1 gig is  256 million ints
// 1 int 4 bytes
int main()
{

    int data[LEN];
    srand(time(NULL));
    for (int i = 0; i < LEN; i++)
    {
		  // should only be called once
		data[i] = rand() % (10 + 1 - 0) + 0;
		//printf("generated: %ld",data[i]);
	}
	printf("int arr created\n");

    int childpid = fork();
    long int test = 0;
    if (childpid == 0) {
        int roura2 = open("/tmp/trubka", O_WRONLY | O_NONBLOCK);
        printf("Trubka otevrena PRO zapis %d\n", roura2);

        for (long int i = 0; i < 250; i++) {

			for (long j= 0; j < LEN+1; j++)
			{
				test += data[j];
				printf("i: %d, TEST: %ld\n",j, test);
			}
			printf("DEBUG");
			printf("i: %ld",i);
            int ret = write(roura2, data, sizeof(data));


        }
        printf("TEST END: %ld", test);

    }
    else {
        int roura = open("/tmp/trubka", O_RDONLY | O_NONBLOCK);
        printf("Trubka otevrena PRO CTENI %d\n", roura);

        for (int i = 0; i < 2500000; i++) {


                int ret2 = read(roura, data, sizeof(data));


        }
    }

    /* remove the FIFO */
    //close(roura);
    printf("end");
    return 0;
}