Summary - Memory

Reinforce memory management with a summary task.

Memory management summary

Memory management is built on three habits: avoiding needless allocations, reusing objects and choosing the right type. The GC cleans up automatically but every allocation adds to its work. Pools, using structs and loading in parts all relieve memory.

int yeniNesne = 2;
int yenidenKullanilan = 5;

When these habits are applied together, memory problems decrease.

Exercise Memory summary task

In a class named BellekOzet, define a string field named yontem with the value "Pooling", an integer field named kazanc with the value 5, and an integer field named kare. In the Awake method set yontem to "Struct". In the Start method print the pieces "Yontem: ", yontem, " Kazanc: " and kazanc joined together with Debug.Log. In the Update method increase the kare counter by one every frame.

Show example solution

using UnityEngine;

public class BellekOzet : MonoBehaviour
{
    string yontem = "Pooling";
    int kazanc = 5;
    int kare;

    void Awake()
    {
        yontem = "Struct";
    }

    void Start()
    {
        Debug.Log("Yontem: " + yontem + " Kazanc: " + kazanc);
    }

    void Update()
    {
        kare++;
    }
}

Test yourself

Which of the following increases memory allocation?
```
void Update()
{
    Nesne gecici = new Nesne();
}
```
- Dropping references of unused objects
- Creating a new object with new every frame in Update
- Taking objects from a pool
- Using structs for small data
Show answer

Creating a new object with new every frame in Update — Producing an object with new every frame allocates constantly; pooling, structs and dropping references reduce allocation.

Write the array allocation

    GameObject[] kasaDizisi = new ____[5];

Show answer

    GameObject[] kasaDizisi = new GameObject[5];

Memory summary table

GC

Cleans up unused objects
Heap tahsisi

Reserving memory with new
struct

Stored as a value type
Object pooling

The technique of reusing objects

Next lesson: Build Settings in depth

We Are Enhancing Your Experience

Cookie Preferences

Strictly Necessary Cookies

Analytical Cookies