CS604 Assignment Solution (Fall 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

structthread_data{
intparentID,th_ID;
char *name;
char *detail;
};
structthread_datathread_array[NUM_THREADS];
void *MythreadFunc(void *value){
intid,parentid;
char *naam;
char *kaam;
structthread_data *my_data;
sleep(1);
my_data = (structthread_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];
intprocess_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(inti = 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(inti = 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;

}

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