程序不会执行pthread

Question

I have to design a multi-threaded application involved with the consumer-producer problem. So far, I've been trying to get the Pthreads to work correctly before I try to implement my solution. But, my program won't even load up the the function on my pthread. I'm not sure what I'm doing wrong here.

#include <pthread.h>
#include <stdlib.h>
#include <stdio.h>
void* Producer(void *arg)
{
    printf("\nEntered Producer\n");
    int i, item, index;

    index = (int)arg;

    FILE *f = fopen(bookorders, "r");
    char c = fgetc(f);
    int z =0;
    while (c!=EOF) {
        char * buffer = (char *)malloc(1000);
        while (c!='\n') {
            *(buffer+z) = c;
            z++;
            c = fgetc(f);
        }

        char delim[2] = "|";
        printf("%s\n", buffer);
    }



}

int main(int argc, const char * argv[])
{
    pthread_t Produc;

    pthread_create(&Produc, NULL, Producer, NULL);

    return 0;
}

I guess my big question is what is the proper process of creating a pthread and then getting it to run a function, which in this case is my Producer function

Answer 1

What's happening here is your main thread calls pthread_create and just returns and since the main thread exits, your Production thread also exits. What you need to do is, instruct the main thread to wait for the Produc thread to finish executing.

 int main(){
      //Call pthread_create
      pthread_join(Produc, NULL) ;
      return 0;
 }