Manual Memory Management

From version 0.5.0, dlib supports manual memory management (MMM) based on standard C malloc/free. You can use the module dlib.core.memory to allocate classes, structs and arrays in unmanaged heap using New and Delete template functions:

import dlib.core.memory;

class MyClass 
{
    int x;

    this(int x)
    {
        this.x = x;
    }
}

MyClass obj = New!MyClass(99);
assert(obj.x == 99);
Delete(obj);

int[] arr = New!(int[])(100);
assert(arr.length == 100);
Delete(arr);

This functionality resembles C++ way of doing things, and, as you are requred to manually delete your objects, may lead to memory leaks, if used carelessly. To help you debug your applications, dlib now also provides tools for memory profiling. To use it, compile everything with --version=memoryDebug option.

The function printMemoryLog outputs an allocation log with type and size information. Objects that remain in memory (undeleted) are marked as such.

printMemoryLog();

Example output:

----------------------------------------------------
               Memory allocation log                
----------------------------------------------------
         Foo - 12 byte(s) at 544AF0
REMAINS: int[] - 400 byte(s) at 5D07B0
REMAINS: Foo - 12 byte(s) at 544E70
----------------------------------------------------
Total amount of allocated memory: 412
----------------------------------------------------