crazyboblee | abc4dd0 | 2007-02-01 01:44:36 +0000 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (C) 2006 Google Inc. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
crazyboblee | 9bb6202 | 2007-02-01 00:06:53 +0000 | [diff] [blame] | 16 | |
kevinb9n | cad2c2b | 2007-05-15 17:28:03 +0000 | [diff] [blame] | 17 | package com.google.inject.internal; |
crazyboblee | 9bb6202 | 2007-02-01 00:06:53 +0000 | [diff] [blame] | 18 | |
| 19 | import java.util.logging.Logger; |
| 20 | |
| 21 | /** |
crazyboblee | ef83bd2 | 2007-02-01 00:52:57 +0000 | [diff] [blame] | 22 | * Enables simple performance monitoring. |
| 23 | * |
crazyboblee | 9bb6202 | 2007-02-01 00:06:53 +0000 | [diff] [blame] | 24 | * @author crazybob@google.com (Bob Lee) |
| 25 | */ |
crazyboblee | ef83bd2 | 2007-02-01 00:52:57 +0000 | [diff] [blame] | 26 | public class Stopwatch { |
limpbizkit | 3d58d6b | 2008-03-08 16:11:47 +0000 | [diff] [blame] | 27 | private static final Logger logger = Logger.getLogger(Stopwatch.class.getName()); |
crazyboblee | 9bb6202 | 2007-02-01 00:06:53 +0000 | [diff] [blame] | 28 | |
limpbizkit | 3d58d6b | 2008-03-08 16:11:47 +0000 | [diff] [blame] | 29 | private long start = System.currentTimeMillis(); |
crazyboblee | 9bb6202 | 2007-02-01 00:06:53 +0000 | [diff] [blame] | 30 | |
| 31 | /** |
kevinb9n | d4d4df3 | 2007-03-08 21:22:37 +0000 | [diff] [blame] | 32 | * Resets and returns elapsed time in milliseconds. |
crazyboblee | 9bb6202 | 2007-02-01 00:06:53 +0000 | [diff] [blame] | 33 | */ |
crazyboblee | ef83bd2 | 2007-02-01 00:52:57 +0000 | [diff] [blame] | 34 | public long reset() { |
crazyboblee | 9bb6202 | 2007-02-01 00:06:53 +0000 | [diff] [blame] | 35 | long now = System.currentTimeMillis(); |
| 36 | try { |
| 37 | return now - start; |
| 38 | } finally { |
| 39 | start = now; |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | /** |
kevinb9n | d4d4df3 | 2007-03-08 21:22:37 +0000 | [diff] [blame] | 44 | * Resets and logs elapsed time in milliseconds. |
crazyboblee | 9bb6202 | 2007-02-01 00:06:53 +0000 | [diff] [blame] | 45 | */ |
limpbizkit | 3d58d6b | 2008-03-08 16:11:47 +0000 | [diff] [blame] | 46 | public void resetAndLog(String label) { |
kevinb9n | d4d4df3 | 2007-03-08 21:22:37 +0000 | [diff] [blame] | 47 | logger.fine(label + ": " + reset() + "ms"); |
crazyboblee | 9bb6202 | 2007-02-01 00:06:53 +0000 | [diff] [blame] | 48 | } |
| 49 | } |