Source Code Cross Referenced for DevUtils.java in  » Web-Crawler » heritrix » org » archive » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » Web Crawler » heritrix » org.archive.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* DevUtils
002:         *
003:         * Created on Oct 29, 2003
004:         *
005:         * Copyright (C) 2003 Internet Archive.
006:         *
007:         * This file is part of the Heritrix web crawler (crawler.archive.org).
008:         *
009:         * Heritrix is free software; you can redistribute it and/or modify
010:         * it under the terms of the GNU Lesser Public License as published by
011:         * the Free Software Foundation; either version 2.1 of the License, or
012:         * any later version.
013:         *
014:         * Heritrix is distributed in the hope that it will be useful,
015:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
016:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
017:         * GNU Lesser Public License for more details.
018:         *
019:         * You should have received a copy of the GNU Lesser Public License
020:         * along with Heritrix; if not, write to the Free Software
021:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
022:         */
023:        package org.archive.util;
024:
025:        import java.io.BufferedReader;
026:        import java.io.IOException;
027:        import java.io.InputStreamReader;
028:        import java.io.PrintWriter;
029:        import java.io.StringWriter;
030:        import java.util.logging.Logger;
031:
032:        /**
033:         * Write a message and stack trace to the 'org.archive.util.DevUtils' logger.
034:         *
035:         * @author gojomo
036:         * @version $Revision: 4644 $ $Date: 2006-09-20 22:40:21 +0000 (Wed, 20 Sep 2006) $
037:         */
038:        public class DevUtils {
039:            public static Logger logger = Logger.getLogger(DevUtils.class
040:                    .getName());
041:
042:            /**
043:             * Log a warning message to the logger 'org.archive.util.DevUtils' made of
044:             * the passed 'note' and a stack trace based off passed exception.
045:             *
046:             * @param ex Exception we print a stacktrace on.
047:             * @param note Message to print ahead of the stacktrace.
048:             */
049:            public static void warnHandle(Throwable ex, String note) {
050:                logger.warning(TextUtils.exceptionToString(note, ex));
051:            }
052:
053:            /**
054:             * @return Extra information gotten from current Thread.  May not
055:             * always be available in which case we return empty string.
056:             */
057:            public static String extraInfo() {
058:                StringWriter sw = new StringWriter();
059:                PrintWriter pw = new PrintWriter(sw);
060:                final Thread current = Thread.currentThread();
061:                if (current instanceof  Reporter) {
062:                    Reporter tt = (Reporter) current;
063:                    try {
064:                        tt.reportTo(pw);
065:                    } catch (IOException e) {
066:                        // Not really possible w/ a StringWriter
067:                        e.printStackTrace();
068:                    }
069:                }
070:                if (current instanceof  ProgressStatisticsReporter) {
071:                    ProgressStatisticsReporter tt = (ProgressStatisticsReporter) current;
072:                    try {
073:                        tt.progressStatisticsLegend(pw);
074:                        tt.progressStatisticsLine(pw);
075:                    } catch (IOException e) {
076:                        // Not really possible w/ a StringWriter
077:                        e.printStackTrace();
078:                    }
079:                }
080:                pw.flush();
081:                return sw.toString();
082:            }
083:
084:            /**
085:             * Nothing to see here, move along.
086:             * @deprecated  This method was never used.
087:             */
088:            @Deprecated
089:            public static void betterPrintStack(RuntimeException re) {
090:                re.printStackTrace(System.err);
091:            }
092:
093:            /**
094:             * Send this JVM process a SIGQUIT; giving a thread dump and possibly
095:             * a heap histogram (if using -XX:+PrintClassHistogram).
096:             * 
097:             * Used to automatically dump info, for example when a serious error
098:             * is encountered. Would use 'jmap'/'jstack', but have seen JVM
099:             * lockups -- perhaps due to lost thread wake signals -- when using
100:             * those against Sun 1.5.0+03 64bit JVM. 
101:             */
102:            public static void sigquitSelf() {
103:                try {
104:                    Process p = Runtime.getRuntime().exec(
105:                            new String[] { "perl", "-e",
106:                                    "print getppid(). \"\n\";" });
107:                    BufferedReader br = new BufferedReader(
108:                            new InputStreamReader(p.getInputStream()));
109:                    String ppid = br.readLine();
110:                    Runtime.getRuntime().exec(
111:                            new String[] { "sh", "-c", "kill -3 " + ppid })
112:                            .waitFor();
113:                } catch (IOException e) {
114:                    // TODO Auto-generated catch block
115:                    e.printStackTrace();
116:                } catch (InterruptedException e) {
117:                    // TODO Auto-generated catch block
118:                    e.printStackTrace();
119:                }
120:            }
121:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.