MemoryLogger.java

/*
 * Protocoder 
 * A prototyping platform for Android devices 
 * 
 * Victor Diaz Barrales victormdb@gmail.com
 *
 * Copyright (C) 2014 Victor Diaz
 * Copyright (C) 2013 Motorola Mobility LLC
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the Software
 * is furnished to do so, subject to the following conditions: 
 * 
 * The above copyright notice and this permission notice shall be included in all 
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 
 * THE SOFTWARE.
 * 
 */

package org.protocoderrunner.utils;

import android.os.Debug;
import android.util.Log;

public class MemoryLogger {
	static double lastavail;
	static double initavail;
	static boolean first = true;

	public static void showMemoryStats() {
		showMemoryStats("");
	}

	public static void showMemoryStats(String message) {
		Log.i("memory", message
				+ "----------------------------------------------------------------------------------------");
		double nativeUsage = Debug.getNativeHeapAllocatedSize();
		Log.i("memory", "nativeUsage: " + (nativeUsage / 1048576d));
		// current heap size
		double heapSize = Runtime.getRuntime().totalMemory();
		// Log.i("memory", "heapSize: " + (heapSize / 1048576d));
		// amount available in heap
		double heapRemaining = Runtime.getRuntime().freeMemory();
		// Log.i("memory", "heapRemaining: " + (heapRemaining / 1048576d));
		double memoryAvailable = Runtime.getRuntime().maxMemory() - (heapSize - heapRemaining) - nativeUsage;
		Log.i("memory", "memoryAvailable: " + (memoryAvailable / 1048576d));

		if (first) {
			initavail = memoryAvailable;
			first = false;
		}
		if (lastavail > 0) {
			Log.i("memory", "consumed since last: " + ((lastavail - memoryAvailable) / 1048576d));
		}
		Log.i("memory", "consumed total: " + ((initavail - memoryAvailable) / 1048576d));

		lastavail = memoryAvailable;

		Log.i("memory",
				"-----------------------------------------------------------------------------------------------");
	}
}