====== C - C++ Threads - Thread safe function ======

===== thread_safe_function.hpp =====

<code cpp>
#pragma once

#include <string>

void thread_safe_function(std::string str);
</code>

----

===== thread_safe_function.cpp =====

<code cpp>
#include "thread_safe_function.hpp"
#include <string>
#include <iostream>
#include <mutex>

std::mutex mtx;

void thread_safe_function(std::string str)
{
  std::lock_guard<std::mutex> lck(mtx);

  std::cout << str << std::endl;
}
</code>

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===== References =====

https://en.cppreference.com/w/cpp/thread/lock_guard