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Eclipse deadlocked here is the stack trace. I happend to have a prompt open so I could "Ctrl+Break": I am using 2.1.1 Full thread dump Java HotSpot(TM) Client VM (1.4.2-beta-b19 mixed mode): "org.eclipse.jdt.internal.ui.text.JavaReconciler" daemon prio=2 tid=0x26c5eb48 n id=0x858 in Object.wait() [280af000..280afd94] at java.lang.Object.wait(Native Method) at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread .run(AbstractReconciler.java:161) - locked <0x12f00ef0> (a org.eclipse.jface.text.reconciler.DirtyRegionQu eue) "Text Viewer Hover Presenter" daemon prio=2 tid=0x2493abf8 nid=0x86c runnable [2 803f000..2803fd94] at java.util.zip.ZipFile.getNextEntry(Native Method) at java.util.zip.ZipFile.access$400(ZipFile.java:26) at java.util.zip.ZipFile$2.nextElement(ZipFile.java:313) - locked <0x12d63c00> (a java.util.zip.ZipFile) at org.eclipse.jdt.internal.core.SourceMapper.computeAllRootPaths(Source Mapper.java:377) at org.eclipse.jdt.internal.core.SourceMapper.findSource(SourceMapper.ja va:793) at org.eclipse.jdt.internal.core.SourceMapper.findSource(SourceMapper.ja va:768) at org.eclipse.jdt.internal.core.ClassFile.openBuffer(ClassFile.java:390 ) at org.eclipse.jdt.internal.core.Openable.getBuffer(Openable.java:193) at org.eclipse.jdt.internal.corext.javadoc.JavaDocAccess.getJavaDoc(Java DocAccess.java:44) at org.eclipse.jdt.internal.ui.text.java.hover.JavadocHover.getHoverInfo (JavadocHover.java:62) at org.eclipse.jdt.internal.ui.text.java.hover.AbstractJavaEditorTextHov er.getHoverInfo(AbstractJavaEditorTextHover.java:98) at org.eclipse.jdt.internal.ui.text.java.hover.BestMatchHover.getHoverIn fo(BestMatchHover.java:137) at org.eclipse.jdt.internal.ui.text.java.hover.JavaEditorTextHoverProxy. getHoverInfo(JavaEditorTextHoverProxy.java:72) at org.eclipse.jface.text.TextViewerHoverManager$2.run(TextViewerHoverMa nager.java:110) "Console Polling Thread" prio=5 tid=0x2473de38 nid=0x69c waiting on condition [2 7f2f000..27f2fd94] at java.lang.Thread.sleep(Native Method) at org.eclipse.debug.internal.ui.views.console.ConsoleDocumentPartitione r.pollAndSleep(ConsoleDocumentPartitioner.java:528) at org.eclipse.debug.internal.ui.views.console.ConsoleDocumentPartitione r$1.run(ConsoleDocumentPartitioner.java:512) at java.lang.Thread.run(Thread.java:534) "Process Monitor" prio=5 tid=0x24940b40 nid=0x8b8 runnable [27eef000..27eefd94] at java.lang.Win32Process.waitFor(Native Method) at org.eclipse.debug.internal.core.ProcessMonitor.monitorProcess(Process Monitor.java:51) at org.eclipse.debug.internal.core.ProcessMonitor.access$0(ProcessMonito r.java:48) at org.eclipse.debug.internal.core.ProcessMonitor$1.run(ProcessMonitor.j ava:68) at java.lang.Thread.run(Thread.java:534) "Input Stream Monitor" prio=5 tid=0x248f1cf8 nid=0x788 in Object.wait() [27eaf00 0..27eafd94] at java.lang.Object.wait(Native Method) - waiting on <0x128c3130> (a java.lang.Object) at java.lang.Object.wait(Object.java:429) at org.eclipse.debug.internal.core.InputStreamMonitor.writeNext(InputStr eamMonitor.java:124) - locked <0x128c3130> (a java.lang.Object) at org.eclipse.debug.internal.core.InputStreamMonitor.write(InputStreamM onitor.java:99) at org.eclipse.debug.internal.core.InputStreamMonitor$1.run(InputStreamM onitor.java:75) at java.lang.Thread.run(Thread.java:534) "Output Stream Monitor" prio=5 tid=0x26c00668 nid=0x6e0 runnable [27e6f000..27e6 fd94] at java.io.FileInputStream.readBytes(Native Method) at java.io.FileInputStream.read(FileInputStream.java:177) at org.eclipse.debug.internal.core.OutputStreamMonitor.read(OutputStream Monitor.java:132) at org.eclipse.debug.internal.core.OutputStreamMonitor.access$1(OutputSt reamMonitor.java:124) at org.eclipse.debug.internal.core.OutputStreamMonitor$1.run(OutputStrea mMonitor.java:177) at java.lang.Thread.run(Thread.java:534) "Output Stream Monitor" prio=5 tid=0x247414a0 nid=0x4ec runnable [27e2f000..27e2 fd94] at java.io.FileInputStream.readBytes(Native Method) at java.io.FileInputStream.read(FileInputStream.java:194) at java.io.BufferedInputStream.read1(BufferedInputStream.java:220) at java.io.BufferedInputStream.read(BufferedInputStream.java:277) - locked <0x128c7280> (a java.io.BufferedInputStream) at java.io.FilterInputStream.read(FilterInputStream.java:90) at org.eclipse.debug.internal.core.OutputStreamMonitor.read(OutputStream Monitor.java:132) at org.eclipse.debug.internal.core.OutputStreamMonitor.access$1(OutputSt reamMonitor.java:124) at org.eclipse.debug.internal.core.OutputStreamMonitor$1.run(OutputStrea mMonitor.java:177) at java.lang.Thread.run(Thread.java:534) "org.eclipse.jdt.internal.ui.text.JavaReconciler" daemon prio=2 tid=0x247c36f8 n id=0x590 runnable [2749f000..2749fd94] at java.lang.Object.wait(Native Method) at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread .run(AbstractReconciler.java:161) - locked <0x12267638> (a org.eclipse.jface.text.reconciler.DirtyRegionQu eue) "Decoration" daemon prio=2 tid=0x245efe90 nid=0x764 in Object.wait() [2531f000.. 2531fd94] at java.lang.Object.wait(Native Method) - waiting on <0x11adfc98> (a org.eclipse.ui.internal.decorators.Decorati onScheduler) at java.lang.Object.wait(Object.java:429) at org.eclipse.ui.internal.decorators.DecorationScheduler.next(Decoratio nScheduler.java:214) - locked <0x11adfc98> (a org.eclipse.ui.internal.decorators.DecorationSc heduler) at org.eclipse.ui.internal.decorators.DecorationScheduler$2.run(Decorati onScheduler.java:240) at java.lang.Thread.run(Thread.java:534) "org.eclipse.jdt.internal.ui.text.JavaReconciler" daemon prio=2 tid=0x2467de88 n id=0x5a0 runnable [2516f000..2516fd94] at java.lang.Object.wait(Native Method) - waiting on <0x11a970f0> (a org.eclipse.jface.text.reconciler.DirtyRegi onQueue) at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread .run(AbstractReconciler.java:161) - locked <0x11a970f0> (a org.eclipse.jface.text.reconciler.DirtyRegionQu eue) "Java indexing" daemon prio=4 tid=0x24353a00 nid=0xa5c waiting on condition [251 2f000..2512fd94] at java.lang.Thread.sleep(Native Method) at org.eclipse.jdt.internal.core.search.processing.JobManager.run(JobMan ager.java:349) at java.lang.Thread.run(Thread.java:534) "Signal Dispatcher" daemon prio=10 tid=0x00921ac0 nid=0xa08 waiting on condition [0..0] "Finalizer" daemon prio=9 tid=0x0091ece8 nid=0x8cc in Object.wait() [2422f000..2 422fd94] at java.lang.Object.wait(Native Method) - waiting on <0x113cb060> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111) - locked <0x113cb060> (a java.lang.ref.ReferenceQueue$Lock) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127) at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159) "Reference Handler" daemon prio=10 tid=0x0091d860 nid=0x574 in Object.wait() [24 1ef000..241efd94] at java.lang.Object.wait(Native Method) - waiting on <0x113cb0c8> (a java.lang.ref.Reference$Lock) at java.lang.Object.wait(Object.java:429) at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:115) - locked <0x113cb0c8> (a java.lang.ref.Reference$Lock) "main" prio=5 tid=0x00235948 nid=0x27c runnable [6e000..6fc3c] at java.util.zip.ZipFile.getNextEntry(Native Method) at java.util.zip.ZipFile.access$400(ZipFile.java:26) at java.util.zip.ZipFile$2.nextElement(ZipFile.java:313) - locked <0x102e0138> (a java.util.zip.ZipFile) at org.eclipse.jdt.internal.core.SourceMapper.computeAllRootPaths(Source Mapper.java:377) at org.eclipse.jdt.internal.core.SourceMapper.findSource(SourceMapper.ja va:793) at org.eclipse.jdt.internal.core.SourceMapper.findSource(SourceMapper.ja va:768) at org.eclipse.jdt.internal.core.BinaryMethod.getParameterNames(BinaryMe thod.java:173) at org.eclipse.jdt.internal.core.CompletionRequestorWrapper.findMethodPa rameterNames(CompletionRequestorWrapper.java:322) at org.eclipse.jdt.internal.core.CompletionRequestorWrapper.acceptMethod (CompletionRequestorWrapper.java:174) at org.eclipse.jdt.internal.codeassist.CompletionEngine.findLocalMethods (CompletionEngine.java:2071) at org.eclipse.jdt.internal.codeassist.CompletionEngine.findMethods(Comp letionEngine.java:2432) at org.eclipse.jdt.internal.codeassist.CompletionEngine.findVariablesAnd Methods(CompletionEngine.java:2900) at org.eclipse.jdt.internal.codeassist.CompletionEngine.complete(Complet ionEngine.java:445) at org.eclipse.jdt.internal.codeassist.CompletionEngine.complete(Complet ionEngine.java:949) at org.eclipse.jdt.internal.core.Openable.codeComplete(Openable.java:125 ) at org.eclipse.jdt.internal.core.CompilationUnit.codeComplete(Compilatio nUnit.java:94) at org.eclipse.jdt.internal.ui.text.java.ParameterGuesser$VariableCollec tor.collect(ParameterGuesser.java:110) at org.eclipse.jdt.internal.ui.text.java.ParameterGuesser.guessParameter Name(ParameterGuesser.java:216) at org.eclipse.jdt.internal.ui.text.java.ParameterGuessingProposal.guess Parameters(ParameterGuessingProposal.java:186) at org.eclipse.jdt.internal.ui.text.java.ParameterGuessingProposal.compu teGuessingCompletion(ParameterGuessingProposal.java:208) at org.eclipse.jdt.internal.ui.text.java.ParameterGuessingProposal.apply (ParameterGuessingProposal.java:116) at org.eclipse.jdt.internal.ui.text.java.JavaCompletionProposal.apply(Ja vaCompletionProposal.java:503) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertPr oposal(CompletionProposalPopup.java:333) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.selectPr oposalWithMask(CompletionProposalPopup.java:302) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.verifyKe y(CompletionProposalPopup.java:573) at org.eclipse.jface.text.contentassist.ContentAssistant$InternalListene r.verifyKey(ContentAssistant.java:605) at org.eclipse.jface.text.TextViewer$VerifyKeyListenersManager.verifyKey (TextViewer.java:368) at org.eclipse.swt.custom.StyledTextListener.handleEvent(StyledTextListe ner.java:55) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:81) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:840) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:865) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:849) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:656) at org.eclipse.swt.custom.StyledText.handleKeyDown(StyledText.java:5214) at org.eclipse.swt.custom.StyledText$8.handleEvent(StyledText.java:4963) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:81) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:840) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:1838) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1545) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1402) at org.eclipse.ui.internal.Workbench.run(Workbench.java:1385) at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoa der.java:845) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.launcher.Main.basicRun(Main.java:291) at org.eclipse.core.launcher.Main.run(Main.java:747) at org.eclipse.core.launcher.Main.main(Main.java:583) "VM Thread" prio=5 tid=0x0095d110 nid=0x940 runnable "VM Periodic Task Thread" prio=10 tid=0x0023ead8 nid=0x600 waiting on condition "Suspend Checker Thread" prio=10 tid=0x00921170 nid=0x71c runnable
further to my original bug report: After killing eclipse I couldn't get it to run again (it kept on deadlocking). But I noticed that I had a residiual process from the previous session. After killing that process as well eclipse recovered. It appeared to possible have something to do with a lock on one of the files on the file system!
*** This bug has been marked as a duplicate of 43922 ***
