In this task, you are required to implement methods in the given file deadlock.c

Question

In this task, you are required to implement methods in the given file deadlock.cpp Your need to implement these using threads, you may use high level C++ threads or pthreads for this purpose Methods to implement are defined below 1. writeToFile(int threadNumber) - this simply writes data to a file called "dead lock.txt", the data that must be written consists of the following The first 10 iterations of the product of the thread number and i separated by a single space - Where i is a loop variable from 1 to 10 Example: if thread number is 2 the data that should be written to the file is: [ 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 2. lock) - implement any type of locking mechanism of your choice. You may use a 3. unlock - implement a unlocking mechanism with relation to the way you imple- 4. main(...) - You should have one command line argument that accepts the number library for this mented the lock() function. of threads to create - For each thread created you need to display a message as well as the thread ID Your threads should call the threadFunction() function

Explanation / Answer

#include <thread>
#include <iostream>
#include <cstdlib>
#include <mutex>
#include <fstream>

using namespace std;

mutex mtx;

int flag=0;

void writeToFile(int threadNumber)
{
ofstream myfile;
myfile.open("dead-lock.txt");
int i;
for(i=1;i<=10;i++)
{
myfile<<i*threadNumber<<",";
}
myfile.close();
}

void lock()
{
mtx.lock();
}

void unlock()
{
mtx.unlock();
}

void threadFunction(int threadNumber)
{
int x=0;
int y=0;
try
{
lock();
writeToFile(threadNumber);
throw new exception();
unlock();
}
catch(...)
{
cout<<"Something went wrong!"<<endl;
}
}

int main(int argc,char const *argv[])
{
int a,i;
a=stoi(argv[0]);
thread arr[a];
for(i=0;i<a;i++)
{
arr[i](threadFunction);
cout<<"Created Thread: "<<arr[i]<<endl;
}
return 0;
}

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