001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2009 SonarSource SA 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * Sonar is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020 package org.sonar.api.utils; 021 022 import org.slf4j.Logger; 023 import org.slf4j.LoggerFactory; 024 025 /** 026 * A very simple profiler to log the time elapsed performing some tasks. 027 * This implementation is not thread-safe. 028 * 029 * @since 2.0 030 */ 031 public class TimeProfiler { 032 033 private Logger logger; 034 private long start = 0; 035 private String name; 036 037 public TimeProfiler(Logger logger) { 038 this.logger = logger; 039 } 040 041 public TimeProfiler(Class clazz) { 042 this.logger = LoggerFactory.getLogger(clazz); 043 } 044 045 /** 046 * Use the default Sonar logger 047 */ 048 public TimeProfiler() { 049 this.logger = Logs.INFO; 050 } 051 052 public TimeProfiler start(String name) { 053 this.name = name; 054 this.start = System.currentTimeMillis(); 055 logger.info(name + "..."); 056 return this; 057 } 058 059 public TimeProfiler setLogger(Logger logger) { 060 this.logger = logger; 061 return this; 062 } 063 064 public Logger getLogger() { 065 return logger; 066 } 067 068 public TimeProfiler stop() { 069 if (start > 0) { 070 logger.info("{} done: {} ms", name, (System.currentTimeMillis() - start)); 071 } 072 start = 0; 073 return this; 074 } 075 }