Memory usage fixes, general cleanup

Main/src/main/java/com/chameleonvision/MemoryManager.java

@@ -0,0 +1,41 @@
+package com.chameleonvision;
+
+public class MemoryManager {
+
+	private static final long MEGABYTE_FACTOR = 1024L * 1024L;
+
+	private int collectionThreshold;
+	private int lastUsedMb = 0;
+
+	public MemoryManager(int collectionThreshold) {
+		this.collectionThreshold = collectionThreshold;
+	}
+
+
+	public static long getUsedMemory() {
+		return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
+	}
+
+	public static int getUsedMemoryMB() {
+		return (int) (getUsedMemory() / MEGABYTE_FACTOR);
+	}
+
+	private static void collect() {
+		System.gc();
+		System.runFinalization();
+	}
+
+	public void run() {
+		var usedMem = getUsedMemoryMB();
+
+		if (usedMem != lastUsedMb) {
+			lastUsedMb = usedMem;
+			System.out.printf("Memory usage: %dMB\n", usedMem);
+		}
+
+		if (usedMem >= collectionThreshold) {
+			collect();
+			System.out.printf("Garbage collected at %dMB\n", usedMem);
+		}
+	}
+}