bundles/org.simantics.utils.thread/src/org/simantics/utils/threads/logger/ThreadLogger.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.utils.threads.logger;\r
  13 \r
  14 import java.io.DataOutput;\r
  15 import java.io.DataOutputStream;\r
  16 import java.io.FileNotFoundException;\r
  17 import java.io.FileOutputStream;\r
  18 import java.io.IOException;\r
  19 \r
  20 public class ThreadLogger implements IThreadLogger {\r
  21 \r
  22     public static String LOG_FILE = "d:\\threads.log";\r
  23     \r
  24     public static boolean LOG = false;\r
  25 \r
  26     static Object loggerCreationLock = new Object();\r
  27     static ThreadLogger logger = null; \r
  28 \r
  29     DataOutput log;\r
  30 \r
  31     public ThreadLogger() {\r
  32         if(LOG) {\r
  33             try {\r
  34                 FileOutputStream stream = new FileOutputStream(LOG_FILE);\r
  35                 log = new DataOutputStream(stream);\r
  36             } catch (FileNotFoundException e) {\r
  37                 e.printStackTrace();\r
  38             }\r
  39         }\r
  40     }\r
  41 \r
  42     public static ThreadLogger getInstance() {\r
  43         if(logger == null) {\r
  44             synchronized (loggerCreationLock) {\r
  45                 if(logger == null)\r
  46                     logger = new ThreadLogger();        \r
  47             }                    \r
  48         }\r
  49         return logger;\r
  50     }\r
  51 \r
  52     public class Task implements ITask {\r
  53 \r
  54         String name;\r
  55         long beginTime;\r
  56         long endTime;\r
  57         long threadId;\r
  58 \r
  59         public Task(String name) {                      \r
  60             this.name = name;\r
  61             this.threadId = Thread.currentThread().getId();\r
  62             this.beginTime = System.nanoTime();\r
  63         }\r
  64 \r
  65         @Override\r
  66         public void finish() {\r
  67             this.endTime = System.nanoTime();\r
  68             if(LOG && log != null) {\r
  69                 \r
  70                 try {\r
  71                     synchronized(log) {\r
  72                         log.writeUTF(name);\r
  73                         log.writeLong(threadId);\r
  74                         log.writeLong(beginTime);\r
  75                         log.writeLong(endTime);\r
  76                     }\r
  77                 } catch(IOException e) {\r
  78                     e.printStackTrace();\r
  79                 }\r
  80 \r
  81             }\r
  82         }\r
  83 \r
  84     }\r
  85 \r
  86     @Override\r
  87     public ITask begin(String taskName) {\r
  88         return new Task(taskName);\r
  89     }\r
  90 \r
  91 }\r