CS604 Assignment #1 Complete Solution -2018

Code for CS604 Assignment (Fall 2018) 

Code for the Program:

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <pthread.h>

#define NUM_THREADS 3

struct thread_data{

int parentID,th_ID;

char *name;

char *detail;

};

struct thread_data thread_array[NUM_THREADS];

void *MythreadFunc(void *value){

int id,parentid;

char *naam;

char *kaam; 

struct thread_data *my_data;

sleep(1);

my_data = (struct thread_data *)value;

id = my_data -> th_ID;

parentid = my_data -> parentID;

naam = my_data -> name;

kaam = my_data -> detail;

printf("\nThread with ID :%ld ",pthread_self());

printf(" and Parent ID: %d",parentid);

printf(" created and started\n ");

printf("%s\n",naam);

printf("%s\n",kaam);

pthread_exit(NULL);

return NULL; 

}

int main(){

pthread_t thread[NUM_THREADS];

int process_id,rc;

process_id = getpid();

printf("\n\nCurrent Process ID :%d ",process_id);

// Data of struct

thread_array[0].name = "BC17000000";

thread_array[0].detail = "XYZ";

thread_array[0].parentID = process_id;

thread_array[0].th_ID = pthread_self();

thread_array[1].name = "CS604";

thread_array[1].detail = "Operating System";

thread_array[1].parentID = process_id;

thread_array[1].th_ID = pthread_self();

thread_array[2].name = "BSSE";

thread_array[2].detail = "Virtual University of Pakistan";

thread_array[2].parentID = process_id;

thread_array[2].th_ID = pthread_self();

// creating threads via loop

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

rc = pthread_create(&thread[i],NULL,MythreadFunc,(void *)&thread_array[i]);

if(rc){

printf("ERROR: return code from pthread_create() is %d\n",rc);

exit(-1);

}

}// joining the threads to main thread so it can wait until all created threads can execute before main thread 

for(int i = 0; i < NUM_THREADS; i++)

pthread_join(thread[i],NULL);

printf("\n\nThreads are going to be terminated one by one\n");

printf("\n All Threads exited safely...\n");

pthread_exit(NULL);

return EXIT_SUCCESS;

}