| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.uima.ruta.textruler.tools; |
| |
| import org.apache.uima.ruta.textruler.core.TextRulerToolkit; |
| |
| public class MemoryWatch { |
| |
| private static long lastFreeMemory = 0; |
| |
| private static long lastTotalMemory = 0; |
| |
| private static long count = 0; |
| |
| private static long lastFreeMemAfterGuessedGC = 0; |
| |
| public static synchronized void watch() { |
| long free = Runtime.getRuntime().freeMemory(); |
| long total = Runtime.getRuntime().totalMemory(); |
| long max = Runtime.getRuntime().maxMemory(); |
| long used = total - free; |
| |
| boolean show = total != lastTotalMemory || (count % 5000 == 0); |
| |
| if (total == max) { |
| if (free > lastFreeMemory && free != lastFreeMemAfterGuessedGC) // gc |
| // seemd |
| // to |
| // clean |
| // up |
| // the |
| // memory |
| { |
| |
| lastFreeMemAfterGuessedGC = free; |
| show = true; |
| } |
| } |
| |
| if (show) { |
| TextRulerToolkit.log(count + "\tfree: " + free + "\ttotal: " + total + "\tused: " + used |
| + "\tmax: " + max + "\tfreeAfterGC: " + lastFreeMemAfterGuessedGC); |
| } |
| lastFreeMemory = free; |
| lastTotalMemory = total; |
| count++; |
| } |
| |
| } |