QList memory deallocation
dynamic-memory-allocation, memory-management, qlist, qt, qt4
Solution
Memory manager is not required to release the memory your program has allocated. There are no problems in your deallocation.
Problem
I'm trying to free memory after using QList, but it doesn't seem to work properly. Here's my code: ``` QList<double> * myList; myList = new QList<double>; double myNumber; cout << "CP1" << endl; getchar(); // checkpoint 1 for (int i=0; i<1000000; i++) { myNumber = i; myList->append(myNumber); cout << myList->size() << endl; } cout << "CP2!" << endl; getchar(); // checkpoint 2 for (int i=999999; i>0; i--) { myList->removeLast(); cout << myList->size() << endl; } cout << "CP3!" << endl; getchar(); // checkpoint 3 delete myList; cout << "CP4!" << endl; getchar(); // checkpoint 4 ``` Memory usage: - CP1: 460k - CP2:19996k - CP3:19996k - CP4:16088k So it looks like despite removing of elements and deleting `myList` still large part of memory is being used. I believe there is a way to handle it but I can't find it. Thanks in advance for any help. Pawel