CreateFile.cpp

#include <iostream>
#include <fstream>
#include <pthread.h>
#include <sys/ipc.h>
#include <sys/shm.h>
using namespace std;
int *SharedData;
void* createFile(void* filename) {
    string fname = *((string*)filename);

    // Create a new file
    ofstream file(fname);
    file.close();

  ifstream checkFile(fname);
    if (checkFile) {
        cout << "File \"" << fname << "\" created successfully!" << endl;
        checkFile.close();
    } else {
        cout << "Failed to create file \"" << fname << "\"!" << endl;
    }
    

    pthread_exit(NULL);
}

int main() {


       int shmid = shmget((key_t)8749, sizeof(SharedData),IPC_CREAT | 0666);
    if (shmid == -1) {
        perror("Failed!");
        return 1;
    }

    // Attach the shared memory segment
 SharedData = (int*)shmat(shmid, NULL, 0);
    if (SharedData == (int*)(-1)) {
        perror("Failed!");
        return 1;
    }
    
    cout << "\n\tProcess Requirements:\n";
           cout << "\nProcess Requirements:\n";
    cout << "Memory: 800MB\n";
    cout << "Hard Disk Space: 300MB\n";
    cout << "Number of Cores: 1"<< endl;
    cout<<"Available Memory: "<<*SharedData<<endl;
  
    if(*SharedData<800)
    {
     cout << "\tInsufficient resources to create a new process." << endl;
            do{
  
               }while(*SharedData<800);
    }
   cout<<"Memory Allocation Done to This Process!\n";
   *SharedData-=800;
   
   
    string fileName;
    pthread_t thread;

    cout << "Enter name of the new file: ";
    getline(cin, fileName);

    // Create a thread to create the file
    pthread_create(&thread, NULL, createFile, (void*)&fileName);

    // Wait for the thread to complete
    pthread_join(thread, NULL);


 *SharedData+=800;
    return 0;
}