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While debug stepping through java code, eclipse completely freezes UI, until I issue pkill java. I am on: uname -a Linux debian-kz 4.9.0-4-amd64 #1 SMP Debian 4.9.51-1 (2017-09-28) x86_64 GNU/Linux wmctrl -m Name: Compiz Class: N/A PID: N/A Window manager's "showing the desktop" mode: OFF Eclipse Platform Version: 4.6.3.v20170301-0400 Build id: M20170301-0400 While using thread dump i see this: "main" #1 prio=6 os_prio=0 tid=0x00007f72dc00a000 nid=0x7443 runnable [0x00007f72e3e30000] java.lang.Thread.State: RUNNABLE at org.eclipse.swt.internal.gtk.OS.Call(Native Method) at org.eclipse.swt.widgets.Display.sleep(Display.java:5066) at org.eclipse.ui.application.WorkbenchAdvisor.eventLoopIdle(WorkbenchAdvisor.java:368) at org.eclipse.ui.internal.ide.application.IDEWorkbenchAdvisor.eventLoopIdle(IDEWorkbenchAdvisor.java:888) at org.eclipse.ui.internal.Workbench$3.eventLoopIdle(Workbench.java:526) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1126) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610) at org.eclipse.equinox.launcher.Main.run(Main.java:1519) at org.eclipse.equinox.launcher.Main.main(Main.java:1492)
Happens also on: Eclipse Version: 4.7.1.v20171009-0410 Build id: M20171009-0410
Can you provide some stack traces? https://wiki.eclipse.org/How_to_report_a_deadlock
Created attachment 271965 [details] JStack thread dump full thread dump, taken from another terminal in the moment when freeze of ui happened. If it helps - If I wrap problematic code in swingworker.invokelater - this doesn't happen - however - I still think nomater how wrong code is - eclipse should not freeze guest os UI.
For example debug stepping through this code: private void jQueryTemplateItemItemStateChanged(ItemEvent event) { // SwingUtilities.invokeLater(new Runnable() { // // @Override // public void run() { if (event.getStateChange() == ItemEvent.SELECTED) { prop.setProperty("selectedQuery", ((DocumentumQuery) getJQueryTemplate().getSelectedItem()).getName()); saveProp(); prepareQuery(); SettingsQueryColumn.getInstance().initComponents(); runQuery(); } // } // }); } freezes/locks UI, whereas stepping throught this code: private void jQueryTemplateItemItemStateChanged(ItemEvent event) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { if (event.getStateChange() == ItemEvent.SELECTED) { prop.setProperty("selectedQuery", ((DocumentumQuery) getJQueryTemplate().getSelectedItem()).getName()); saveProp(); prepareQuery(); SettingsQueryColumn.getInstance().initComponents(); runQuery(); } } }); } doesn't freeze it.
Created attachment 273737 [details] jstack thread dump This one happened today on Xtext's JIPP Jenkins while executing UI tests for Xtend in this job: https://ci.eclipse.org/xtext/job/xtext-xtend/job/master/ Details on the ci.eclipse.org environment can be given by webmaster.
Likely a DUP of bug#266985 *** This bug has been marked as a duplicate of bug 266985 ***
