C++ healp-allocated memory usage measurement example

main.cpp

//from Howard Hinnant's answer https://stackoverflow.com/a/28003328

#include <cstdlib>
#include <cstddef>
#include <iostream>

std::size_t allocated = 0;

void* operator new(std::size_t sz) {
	void* p = std::malloc(sz);
	allocated += sz;
	return p;
}

void operator delete(void* p) noexcept {
	std::free(p);
}

int main() {
	allocated = 0; //exclude memory heap-allocated memory for static objects
	//TODO: do whatever you want to profile here
	std::cout << "total amount of heap-allocated memory: " << allocated << "\n";
	return 0;
}