Test&Set_Code.txt

// Test-and-Set.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include <iostream>
#include <thread>
using namespace std;

bool lock_1 = false;
int shared_resource = 0;

bool Test_and_Set(bool* key);
void process_1();
void process_2();


int main()
{
    int x;

    thread thread_1 = thread(process_1);
    thread thread_2 = thread(process_2);

    thread_2.join();
    thread_1.join();

    cout << shared_resource << endl;
    cin >> x;
}

bool Test_and_Set(bool* key)
{
    bool x = *key;
    *key = true;
    return x;
}

void process_1()
{
    while (Test_and_Set(&lock_1)) cout << "Process(1) is stuck !! " << endl;  //do nothing

    cout << "Process(1) starts its execution " << endl;
    shared_resource += 2;
    //PIECE OF CODE

    cout << "Process(1) release the lock !! " << endl;
    lock_1 = false;  //release the shared resource
}

void process_2()
{
    while (Test_and_Set(&lock_1)) cout << "Process 2 is stuck !!"<<endl;  //do nothing

    cout << "Process(2) starts its execution " << endl;
    shared_resource = 10;
    //PIECE OF CODE

    cout << "Process(2) release the lock !! " << endl;
    lock_1 = false;  //release the shared resource
}