When a user clicks a banner, he/she is redirected to some website and the ad window is closed (the user may also close the window using the standard close button, though that's not what we really want). Following worst practices, we show our ad window every time a user starts Game of Life (clicks the Start button). Let's assume we want to return some money spent on the Game of Life development and decide to add a window that show various ads to users.
Download the application from github before proceeding any further. Once again, the app we'll use for our tutorial is Conway's Game of Life.
Let's try this tactic for fixing a leak in our sample application.
Therefore, the main tactic in fixing memory leaks is to determine objects that add up over time (causing the leaks) as well as the objects that retain the former ones in memory. If there's a reference to an object you don't know about, GC won't collect the object. Why can this happen? The thing is, GC collects only unreferenced objects. Of course, this won't crash the system, but sooner or later the app will raise an OutOfMemory exception. Nevertheless, point #2 (memory exhaustion because of a leak) is quite real. Moreover, after the app is closed, GC entirely frees the memory occupied by the app. Garbage Collector (GC) fully controls memory release and removes all objects that cannot be accessed by the code. What is a memory leak?Īccording to the most popular definition, a memory leak is a result of incorrect memory management when "an object is stored in memory but cannot be accessed by the running code." In addition, "memory leaks add up over time, and if they are not cleaned up, the system eventually runs out of memory."Īctually, if we'll strictly follow the definition above, "classic" memory leaks are not possible in. But before moving on, let's agree on what a memory leak is. In this tutorial, we'll see how you can use dotMemory to locate and fix memory leaks in your apps. It is only about giving you a feel of one of the possible workflows. Disclaimer: This tutorial should not be treated as a universal guideline for locating and fixing memory leaks.
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