Source Code Cross Referenced for BridgeImpl.java in  » IDE-Netbeans » library » org » apache » tools » ant » module » bridge » impl » 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 » IDE Netbeans » library » org.apache.tools.ant.module.bridge.impl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003:         *
004:         * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005:         *
006:         * The contents of this file are subject to the terms of either the GNU
007:         * General Public License Version 2 only ("GPL") or the Common
008:         * Development and Distribution License("CDDL") (collectively, the
009:         * "License"). You may not use this file except in compliance with the
010:         * License. You can obtain a copy of the License at
011:         * http://www.netbeans.org/cddl-gplv2.html
012:         * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013:         * specific language governing permissions and limitations under the
014:         * License.  When distributing the software, include this License Header
015:         * Notice in each file and include the License file at
016:         * nbbuild/licenses/CDDL-GPL-2-CP.  Sun designates this
017:         * particular file as subject to the "Classpath" exception as provided
018:         * by Sun in the GPL Version 2 section of the License file that
019:         * accompanied this code. If applicable, add the following below the
020:         * License Header, with the fields enclosed by brackets [] replaced by
021:         * your own identifying information:
022:         * "Portions Copyrighted [year] [name of copyright owner]"
023:         *
024:         * Contributor(s):
025:         *
026:         * The Original Software is NetBeans. The Initial Developer of the Original
027:         * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
028:         * Microsystems, Inc. All Rights Reserved.
029:         *
030:         * If you wish your version of this file to be governed by only the CDDL
031:         * or only the GPL Version 2, indicate your decision by adding
032:         * "[Contributor] elects to include this software in this distribution
033:         * under the [CDDL or GPL Version 2] license." If you do not indicate a
034:         * single choice of license, a recipient has the option to distribute
035:         * your version of this file under either the CDDL, the GPL Version 2 or
036:         * to extend the choice of license to its licensees as provided above.
037:         * However, if you add GPL Version 2 code and therefore, elected the GPL
038:         * Version 2 license, then the option applies only if the new code is
039:         * made subject to such option by the copyright holder.
040:         */
041:
042:        package org.apache.tools.ant.module.bridge.impl;
043:
044:        import java.beans.Introspector;
045:        import java.io.File;
046:        import java.io.IOException;
047:        import java.io.InputStream;
048:        import java.io.PrintStream;
049:        import java.lang.reflect.Constructor;
050:        import java.lang.reflect.Field;
051:        import java.lang.reflect.Method;
052:        import java.lang.reflect.Modifier;
053:        import java.net.URL;
054:        import java.util.Collection;
055:        import java.util.HashMap;
056:        import java.util.HashSet;
057:        import java.util.LinkedHashSet;
058:        import java.util.List;
059:        import java.util.Map;
060:        import java.util.Set;
061:        import java.util.Vector;
062:        import java.util.WeakHashMap;
063:        import java.util.logging.Level;
064:        import java.util.logging.Logger;
065:        import org.apache.tools.ant.BuildException;
066:        import org.apache.tools.ant.DemuxOutputStream;
067:        import org.apache.tools.ant.IntrospectionHelper;
068:        import org.apache.tools.ant.Main;
069:        import org.apache.tools.ant.Project;
070:        import org.apache.tools.ant.ProjectHelper;
071:        import org.apache.tools.ant.module.AntModule;
072:        import org.apache.tools.ant.module.AntSettings;
073:        import org.apache.tools.ant.module.api.IntrospectedInfo;
074:        import org.apache.tools.ant.module.bridge.AntBridge;
075:        import org.apache.tools.ant.module.bridge.BridgeInterface;
076:        import org.apache.tools.ant.module.bridge.IntrospectionHelperProxy;
077:        import org.apache.tools.ant.types.EnumeratedAttribute;
078:        import org.apache.tools.ant.types.Path;
079:        import org.netbeans.api.progress.ProgressHandle;
080:        import org.openide.ErrorManager;
081:        import org.openide.awt.StatusDisplayer;
082:        import org.openide.filesystems.FileObject;
083:        import org.openide.filesystems.FileStateInvalidException;
084:        import org.openide.filesystems.FileSystem;
085:        import org.openide.filesystems.FileUtil;
086:        import org.openide.util.Exceptions;
087:        import org.openide.util.NbBundle;
088:        import org.openide.util.NbCollections;
089:        import org.openide.util.RequestProcessor;
090:        import org.openide.windows.OutputWriter;
091:
092:        /**
093:         * Implements the BridgeInterface using the current version of Ant.
094:         * @author Jesse Glick
095:         */
096:        public class BridgeImpl implements  BridgeInterface {
097:
098:            /** Number of milliseconds to wait before forcibly halting a runaway process. */
099:            private static final int STOP_TIMEOUT = 3000;
100:
101:            private static boolean classpathInitialized = false;
102:
103:            /**
104:             * Index of loggers by active thread.
105:             * @see #stop
106:             */
107:            private static final Map<Thread, NbBuildLogger> loggersByThread = new WeakHashMap<Thread, NbBuildLogger>();
108:
109:            public BridgeImpl() {
110:            }
111:
112:            public String getAntVersion() {
113:                try {
114:                    return Main.getAntVersion();
115:                } catch (BuildException be) {
116:                    AntModule.err.notify(ErrorManager.INFORMATIONAL, be);
117:                    return NbBundle.getMessage(BridgeImpl.class,
118:                            "LBL_ant_version_unknown");
119:                }
120:            }
121:
122:            public boolean isAnt16() {
123:                try {
124:                    Class.forName("org.apache.tools.ant.taskdefs.Antlib"); // NOI18N
125:                    return true;
126:                } catch (ClassNotFoundException e) {
127:                    // Fine, 1.5
128:                    return false;
129:                }
130:            }
131:
132:            public IntrospectionHelperProxy getIntrospectionHelper(
133:                    Class<?> clazz) {
134:                return new IntrospectionHelperImpl(clazz);
135:            }
136:
137:            public boolean toBoolean(String val) {
138:                return Project.toBoolean(val);
139:            }
140:
141:            public String[] getEnumeratedValues(Class<?> c) {
142:                if (EnumeratedAttribute.class.isAssignableFrom(c)) {
143:                    try {
144:                        return ((EnumeratedAttribute) c.newInstance())
145:                                .getValues();
146:                    } catch (Exception e) {
147:                        AntModule.err.notify(ErrorManager.INFORMATIONAL, e);
148:                    }
149:                } else if (Enum.class.isAssignableFrom(c)) { // Ant 1.7.0 (#41058)
150:                    try {
151:                        Enum<?>[] vals = (Enum<?>[]) c.getMethod("values")
152:                                .invoke(null);
153:                        String[] names = new String[vals.length];
154:                        for (int i = 0; i < vals.length; i++) {
155:                            names[i] = vals[i].name();
156:                        }
157:                        return names;
158:                    } catch (Exception x) {
159:                        Exceptions.printStackTrace(x);
160:                    }
161:                }
162:                return null;
163:            }
164:
165:            public boolean run(File buildFile, List<String> targets,
166:                    InputStream in, OutputWriter out, OutputWriter err,
167:                    Map<String, String> properties, int verbosity,
168:                    String displayName, Runnable interestingOutputCallback,
169:                    ProgressHandle handle) {
170:                if (!classpathInitialized) {
171:                    classpathInitialized = true;
172:                    // #46171: Ant expects this path to have itself and whatever else you loaded with it,
173:                    // or AntClassLoader.getResources will not be able to find anything in the Ant loader.
174:                    Path.systemClasspath = new Path(null, AntBridge
175:                            .getMainClassPath());
176:                }
177:
178:                boolean ok = false;
179:
180:                // Important for various other stuff.
181:                final boolean ant16 = isAnt16();
182:
183:                // Make sure "main Ant loader" is used as context loader for duration of the
184:                // run. Otherwise some code, e.g. JAXP, will accidentally pick up NB classes,
185:                // which can cause various undesirable effects.
186:                ClassLoader oldCCL = Thread.currentThread()
187:                        .getContextClassLoader();
188:                ClassLoader newCCL = Project.class.getClassLoader();
189:                if (AntModule.err.isLoggable(ErrorManager.INFORMATIONAL)) {
190:                    AntModule.err
191:                            .log("Fixing CCL: " + oldCCL + " -> " + newCCL);
192:                }
193:                Thread.currentThread().setContextClassLoader(newCCL);
194:                AntBridge.fakeJavaClassPath();
195:                try {
196:
197:                    final Project project;
198:
199:                    // first use the ProjectHelper to create the project object
200:                    // from the given build file.
201:                    final NbBuildLogger logger = new NbBuildLogger(buildFile,
202:                            out, err, verbosity, displayName,
203:                            interestingOutputCallback, handle);
204:                    Vector<String> targs;
205:                    try {
206:                        project = new Project();
207:                        project.addBuildListener(logger);
208:                        project.init();
209:                        project.addTaskDefinition("java",
210:                                ForkedJavaOverride.class); // #56341
211:                        try {
212:                            addCustomDefs(project);
213:                        } catch (IOException e) {
214:                            throw new BuildException(e);
215:                        }
216:                        project.setUserProperty("ant.file", buildFile
217:                                .getAbsolutePath()); // NOI18N
218:                        // #14993:
219:                        project.setUserProperty("ant.version", Main
220:                                .getAntVersion()); // NOI18N
221:                        File antHome = AntSettings.getAntHome();
222:                        if (antHome != null) {
223:                            project.setUserProperty("ant.home", antHome
224:                                    .getAbsolutePath()); // NOI18N
225:                        }
226:                        for (Map.Entry<String, String> entry : properties
227:                                .entrySet()) {
228:                            project.setUserProperty(entry.getKey(), entry
229:                                    .getValue());
230:                        }
231:                        if (in != null && ant16) {
232:                            try {
233:                                Method m = Project.class.getMethod(
234:                                        "setDefaultInputStream",
235:                                        InputStream.class); // NOI18N
236:                                m.invoke(project, in);
237:                            } catch (Exception e) {
238:                                AntModule.err.notify(
239:                                        ErrorManager.INFORMATIONAL, e);
240:                            }
241:                        }
242:                        if (AntModule.err
243:                                .isLoggable(ErrorManager.INFORMATIONAL)) {
244:                            AntModule.err
245:                                    .log("CCL when configureProject is called: "
246:                                            + Thread.currentThread()
247:                                                    .getContextClassLoader());
248:                        }
249:                        ProjectHelper projhelper = ProjectHelper
250:                                .getProjectHelper();
251:                        // Cf. Ant #32668 & #32216; ProjectHelper.configureProject undeprecated in 1.7
252:                        project.addReference("ant.projectHelper", projhelper); // NOI18N
253:                        projhelper.parse(project, buildFile);
254:
255:                        project.setInputHandler(new NbInputHandler(
256:                                interestingOutputCallback));
257:
258:                        if (targets != null) {
259:                            targs = new Vector<String>(targets);
260:                        } else {
261:                            targs = new Vector<String>(1);
262:                            targs.add(project.getDefaultTarget());
263:                        }
264:                        logger.setActualTargets(targets != null ? targets
265:                                .toArray(new String[targets.size()]) : null);
266:                    } catch (BuildException be) {
267:                        logger.buildInitializationFailed(be);
268:                        logger.shutdown();
269:                        if (in != null) {
270:                            try {
271:                                in.close();
272:                            } catch (IOException e) {
273:                                AntModule.err.notify(e);
274:                            }
275:                        }
276:                        return false;
277:                    }
278:
279:                    project.fireBuildStarted();
280:
281:                    // Save & restore system output streams.
282:                    InputStream is = System.in;
283:                    if (in != null && ant16) {
284:                        try {
285:                            Class<? extends InputStream> dis = Class.forName(
286:                                    "org.apache.tools.ant.DemuxInputStream")
287:                                    .asSubclass(InputStream.class); // NOI18N
288:                            Constructor<? extends InputStream> c = dis
289:                                    .getConstructor(Project.class);
290:                            is = c.newInstance(project);
291:                        } catch (Exception e) {
292:                            AntModule.err.notify(ErrorManager.INFORMATIONAL, e);
293:                        }
294:                    }
295:                    AntBridge.pushSystemInOutErr(is, new PrintStream(
296:                            new DemuxOutputStream(project, false)),
297:                            new PrintStream(
298:                                    new DemuxOutputStream(project, true)));
299:
300:                    Thread currentThread = Thread.currentThread();
301:                    synchronized (loggersByThread) {
302:                        assert !loggersByThread.containsKey(currentThread);
303:                        loggersByThread.put(currentThread, logger);
304:                    }
305:                    try {
306:                        // Execute the configured project
307:                        //writer.println("#4"); // NOI18N
308:                        project.executeTargets(targs);
309:                        //writer.println("#5"); // NOI18N
310:                        project.fireBuildFinished(null);
311:                        ok = true;
312:                    } catch (Throwable t) {
313:                        // Really need to catch everything, else AntClassLoader.cleanup may
314:                        // not be called, resulting in a memory leak and/or locked JARs (#42431).
315:                        project.fireBuildFinished(t);
316:                    } finally {
317:                        AntBridge.restoreSystemInOutErr();
318:                        if (in != null) {
319:                            try {
320:                                in.close();
321:                            } catch (IOException e) {
322:                                AntModule.err.notify(e);
323:                            }
324:                        }
325:                        synchronized (loggersByThread) {
326:                            loggersByThread.remove(currentThread);
327:                        }
328:                    }
329:
330:                    // Now check to see if the Project defined any cool new custom tasks.
331:                    RequestProcessor.getDefault().post(new Runnable() {
332:                        public void run() {
333:                            IntrospectedInfo custom = AntSettings
334:                                    .getCustomDefs();
335:                            Map<String, Map<String, Class>> defs = new HashMap<String, Map<String, Class>>();
336:                            defs.put("task", NbCollections.checkedMapByCopy(
337:                                    project.getTaskDefinitions(), String.class,
338:                                    Class.class, true));
339:                            defs.put("type", NbCollections.checkedMapByCopy(
340:                                    project.getDataTypeDefinitions(),
341:                                    String.class, Class.class, true));
342:                            custom.scanProject(defs);
343:                            AntSettings.setCustomDefs(custom);
344:                            logger.shutdown();
345:                            // #85698: do not invoke multiple refreshes at once
346:                            refreshFilesystemsTask.schedule(0);
347:                            gutProject(project);
348:                            if (!ant16) {
349:                                // #36393 - memory leak in Ant 1.5.
350:                                RequestProcessor.getDefault().post(
351:                                        new Runnable() {
352:                                            public void run() {
353:                                                hack36393();
354:                                            }
355:                                        });
356:                            }
357:                        }
358:                    });
359:
360:                } finally {
361:                    AntBridge.unfakeJavaClassPath();
362:                    if (AntModule.err.isLoggable(ErrorManager.INFORMATIONAL)) {
363:                        AntModule.err.log("Restoring CCL: " + oldCCL);
364:                    }
365:                    Thread.currentThread().setContextClassLoader(oldCCL);
366:                }
367:
368:                return ok;
369:            }
370:
371:            private static final RequestProcessor.Task refreshFilesystemsTask = RequestProcessor
372:                    .getDefault().create(new Runnable() {
373:                        public void run() {
374:                            Logger.getLogger(BridgeImpl.class.getName()).log(
375:                                    Level.FINE, "Refreshing filesystems");
376:                            FileUtil.refreshAll();
377:                        }
378:                    });
379:
380:            public void stop(final Thread process) {
381:                NbBuildLogger logger;
382:                synchronized (loggersByThread) {
383:                    logger = loggersByThread.get(process);
384:                }
385:                if (logger != null) {
386:                    // Try stopping at a safe point.
387:                    StatusDisplayer.getDefault().setStatusText(
388:                            NbBundle.getMessage(BridgeImpl.class,
389:                                    "MSG_stopping", logger
390:                                            .getDisplayNameNoLock()));
391:                    logger.stop();
392:                    process.interrupt();
393:                    // But if that doesn't do it, double-check later...
394:                    // Yes Thread.stop() is deprecated; that is why we try to avoid using it.
395:                    RequestProcessor.getDefault().create(new Runnable() {
396:                        public void run() {
397:                            forciblyStop(process);
398:                        }
399:                    }).schedule(STOP_TIMEOUT);
400:                } else {
401:                    // Try killing it now!
402:                    forciblyStop(process);
403:                }
404:            }
405:
406:            private void forciblyStop(Thread process) {
407:                if (process.isAlive()) {
408:                    StatusDisplayer.getDefault()
409:                            .setStatusText(
410:                                    NbBundle.getMessage(BridgeImpl.class,
411:                                            "MSG_halting"));
412:                    stopThread(process);
413:                }
414:            }
415:
416:            @SuppressWarnings("deprecation")
417:            private static void stopThread(Thread process) {
418:                process.stop();
419:            }
420:
421:            private static void addCustomDefs(Project project)
422:                    throws BuildException, IOException {
423:                long start = System.currentTimeMillis();
424:                if (AntBridge.getInterface().isAnt16()) {
425:                    Map<String, ClassLoader> antlibLoaders = AntBridge
426:                            .getCustomDefClassLoaders();
427:                    for (Map.Entry<String, ClassLoader> entry : antlibLoaders
428:                            .entrySet()) {
429:                        String cnb = entry.getKey();
430:                        ClassLoader l = entry.getValue();
431:                        String resource = cnb.replace('.', '/') + "/antlib.xml"; // NOI18N
432:                        URL antlib = l.getResource(resource);
433:                        if (antlib == null) {
434:                            throw new IOException("Could not find " + antlib
435:                                    + " in ant/nblib/" + cnb.replace('.', '-')
436:                                    + ".jar"); // NOI18N
437:                        }
438:                        // Once with no namespaces.
439:                        NbAntlib.process(project, antlib, null, l);
440:                        // Once with.
441:                        String antlibUri = "antlib:" + cnb; // NOI18N
442:                        NbAntlib.process(project, antlib, antlibUri, l);
443:                    }
444:                } else {
445:                    // For Ant 1.5, just dump in old-style defs in the simplest manner.
446:                    Map<String, Map<String, Class>> customDefs = AntBridge
447:                            .getCustomDefsNoNamespace();
448:                    for (Map.Entry<String, Class> entry : customDefs
449:                            .get("task").entrySet()) { // NOI18N
450:                        project.addTaskDefinition(entry.getKey(), entry
451:                                .getValue());
452:                    }
453:                    for (Map.Entry<String, Class> entry : customDefs
454:                            .get("type").entrySet()) { // NOI18N
455:                        project.addDataTypeDefinition(entry.getKey(), entry
456:                                .getValue());
457:                    }
458:                }
459:                if (AntModule.err.isLoggable(ErrorManager.INFORMATIONAL)) {
460:                    AntModule.err.log("addCustomDefs took "
461:                            + (System.currentTimeMillis() - start) + "msec");
462:                }
463:            }
464:
465:            private static boolean doHack36393 = true;
466:
467:            /**
468:             * Remove any outstanding ProcessDestroyer shutdown hooks.
469:             * They should not be left in the JRE static area.
470:             * Workaround for bug in Ant 1.5.x, fixed already in Ant 1.6.
471:             */
472:            private static void hack36393() {
473:                if (!doHack36393) {
474:                    // Failed last time, skip this time.
475:                    return;
476:                }
477:                try {
478:                    Class shutdownC = Class.forName("java.lang.Shutdown"); // NOI18N
479:                    Class wrappedHookC = Class
480:                            .forName("java.lang.Shutdown$WrappedHook"); // NOI18N
481:                    Field hooksF = shutdownC.getDeclaredField("hooks"); // NOI18N
482:                    hooksF.setAccessible(true);
483:                    Field hookF = wrappedHookC.getDeclaredField("hook"); // NOI18N
484:                    hookF.setAccessible(true);
485:                    Field lockF = shutdownC.getDeclaredField("lock"); // NOI18N
486:                    lockF.setAccessible(true);
487:                    Object lock = lockF.get(null);
488:                    Set<Thread> toRemove = new HashSet<Thread>();
489:                    synchronized (lock) {
490:                        @SuppressWarnings("unchecked")
491:                        Set<Object> hooks = (Set) hooksF.get(null);
492:                        for (Object wrappedHook : hooks) {
493:                            Thread hook = (Thread) hookF.get(wrappedHook);
494:                            if (hook
495:                                    .getClass()
496:                                    .getName()
497:                                    .equals(
498:                                            "org.apache.tools.ant.taskdefs.ProcessDestroyer")) { // NOI18N
499:                                // Don't remove it now - will get ConcurrentModificationException.
500:                                toRemove.add(hook);
501:                            }
502:                        }
503:                    }
504:                    for (Thread hook : toRemove) {
505:                        if (!Runtime.getRuntime().removeShutdownHook(hook)) {
506:                            throw new IllegalStateException(
507:                                    "Hook was not really registered!"); // NOI18N
508:                        }
509:                        AntModule.err
510:                                .log("#36393: removing an unwanted ProcessDestroyer shutdown hook");
511:                        // #36395: memory leak in ThreadGroup if the thread is not started.
512:                        hook.start();
513:                    }
514:                } catch (Exception e) {
515:                    // Oh well.
516:                    AntModule.err.notify(ErrorManager.INFORMATIONAL, e);
517:                    doHack36393 = false;
518:                }
519:            }
520:
521:            private static boolean doGutProject = !Boolean
522:                    .getBoolean("org.apache.tools.ant.module.bridge.impl.BridgeImpl.doNotGutProject");
523:
524:            /**
525:             * Try to break up as many references in a project as possible.
526:             * Helpful to mitigate the effects of unsolved memory leaks: at
527:             * least one project will not hold onto all subprojects, and a
528:             * taskdef will not hold onto its siblings, etc.
529:             */
530:            private static void gutProject(Project p) {
531:                if (!doGutProject) {
532:                    return;
533:                }
534:                // XXX should ideally try to wait for all other threads in this thread group
535:                // to finish - see e.g. #51962 for example of what can happen otherwise.
536:                try {
537:                    String s = p.getName();
538:                    AntModule.err.log("Gutting extra references in project \""
539:                            + s + "\"");
540:                    Field[] fs = Project.class.getDeclaredFields();
541:                    for (int i = 0; i < fs.length; i++) {
542:                        if (Modifier.isStatic(fs[i].getModifiers())) {
543:                            continue;
544:                        }
545:                        if (fs[i].getType().isPrimitive()) {
546:                            continue;
547:                        }
548:                        fs[i].setAccessible(true);
549:                        Object o = fs[i].get(p);
550:                        try {
551:                            if (o instanceof  Collection) {
552:                                ((Collection) o).clear();
553:                                // #69727: do not null out the field (e.g. Project.listeners) in this case.
554:                                continue;
555:                            } else if (o instanceof  Map) {
556:                                ((Map) o).clear();
557:                                continue;
558:                            }
559:                        } catch (UnsupportedOperationException e) {
560:                            // ignore
561:                        }
562:                        if (Modifier.isFinal(fs[i].getModifiers())) {
563:                            continue;
564:                        }
565:                        fs[i].set(p, null);
566:                    }
567:                    // #43113: IntrospectionHelper can hold strong refs to dynamically loaded classes
568:                    Field helpersF;
569:                    try {
570:                        helpersF = IntrospectionHelper.class
571:                                .getDeclaredField("helpers");
572:                    } catch (NoSuchFieldException x) { // Ant 1.7.0
573:                        helpersF = IntrospectionHelper.class
574:                                .getDeclaredField("HELPERS");
575:                    }
576:                    helpersF.setAccessible(true);
577:                    Object helpersO = helpersF.get(null);
578:                    Map helpersM = (Map) helpersO;
579:                    helpersM.clear();
580:                    // #46532: java.beans.Introspector caches not cleared well in all cases.
581:                    Introspector.flushCaches();
582:                } catch (Exception e) {
583:                    // Oh well.
584:                    AntModule.err.notify(ErrorManager.INFORMATIONAL, e);
585:                    doGutProject = false;
586:                }
587:            }
588:
589:        }
w__ww___.___j__a___v__a___2s_.c_om___ | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.