producers-consumers/src/producer.c

#include <stdlib.h>
#include <stdio.h>
#include <sys/shm.h>
#include <time.h>
#include <unistd.h>
#include "shared.h"

void* Producer(void* arg);
long int produce_item(void);
void insert_item(long int item);


int main(int argc, char* argv[])
{
    if (argc != 2)
    {
        fprintf(stderr, "Usage: %s SharedID# \n", argv[0]);
        exit(1);
    }
    srandom((unsigned int) time(NULL));
    int sharedID = StringToNumber(argv[1]);
    SharedStruct* sharedMem = shmat(sharedID, NULL, 0);
    printf("Adding 5 to shared struct.\n");
    sharedMem->buffer[0] = 5;
    sem_post(&sharedMem->semConsumer);
    return 0;
}

//  Producer main function
//  TODO:   Add waiting for one producer at a time
//          Add ability to use shared memory
void* Producer(void* arg)
{
    long int insertNum;
    SharedStruct* sharedMem;
    while (1)
    {
        insertNum = produce_item();
        printf("The random number is %li\n", insertNum);
        // sem_wait(&semProducer);
        // down(&empty);
        // down(&mutex);
        insert_item(insertNum);
        // sem_post(&semProducer);
        // up(&mutex);
        // up(&full);
        break;
    }
}

//  Generate a number between 0 and 9
long int produce_item(void)
{
    return random() % 10;
}

//  Insert a number into the shared memory
void insert_item(long int item)
{
    ;
}