Track Memory Allocations Cherno

#include <iostream>
#include <string>
#include <memory>

struct AllocationMetrics
{
    uint32_t TotalAllocated = 0;
    uint32_t TotalFreed = 0;

    uint32_t CurrentUsage() { return TotalAllocated - TotalFreed; }
};

static AllocationMetrics s_AllocationMetrics;

void* operator new(size_t size)
{
    s_AllocationMetrics.TotalAllocated += size;

    // Allocate appropriate amount of memory to us and then return a pointer to that memory
    return malloc(size);
}

void operator delete(void* memory, size_t size)
{
    s_AllocationMetrics.TotalFreed += size;

    free(memory);
}

struct Object
{
    int x, y, z;
};

static void PrintMemoryUsage()
{
    std::cout << "Memory Usage: " << s_AllocationMetrics.CurrentUsage() << " bytes\n";
}

int main()
{
    PrintMemoryUsage();
    std::string string = "Cherno";
    PrintMemoryUsage();
    {
        std::unique_ptr<Object> obj = std::make_unique<Object>();
        PrintMemoryUsage();
    }
    PrintMemoryUsage();

    //Object* obj = new Object;
}