Bug 307405 [CommonNavigator] Deadlock in NavigatorContentServiceContentProvider
We are using an adopting product and one of our users encountered this deadlock when starting up their workspace: 1LKDEADLOCK Deadlock detected !!! NULL --------------------- NULL 2LKDEADLOCKTHR Thread "main" (0x41591300) 3LKDEADLOCKWTR is waiting for: 4LKDEADLOCKMON sys_mon_t:0x43134548 infl_mon_t: 0x43134580: 4LKDEADLOCKOBJ org/eclipse/ui/internal/navigator/NavigatorSaveablesService@0x05DB48A8/0x05DB48B4: 3LKDEADLOCKOWN which is owned by: 2LKDEADLOCKTHR Thread "Framework Event Dispatcher" (0x42467700) 3LKDEADLOCKWTR which is waiting for: 4LKDEADLOCKMON sys_mon_t:0x43BA6AB8 infl_mon_t: 0x43BA6AF0: 4LKDEADLOCKOBJ org/eclipse/ui/internal/navigator/NavigatorContentServiceContentProvider@0x0306F6E8/0x0306F6F4: 3LKDEADLOCKOWN which is owned by: 2LKDEADLOCKTHR Thread "main" (0x41591300) I will attach the stack trace.
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/NavigatorContentServiceContentProvider.java
else
					parentPaths.addAll(foundPaths);
			}
		}
		return parentPaths;
	}
	private Set findParents(Object anElement) {
		Set descriptors = contentService.findDescriptorsWithPossibleChild(anElement, false);
		Set parents = new LinkedHashSet();
		NavigatorContentDescriptor foundDescriptor;
		NavigatorContentExtension foundExtension;
		Object parent = null;
		for (Iterator itr = descriptors.iterator(); itr.hasNext();) {
			foundDescriptor = (NavigatorContentDescriptor) itr.next();
			foundExtension = contentService.getExtension(foundDescriptor);
			try {
				if (!isOverridingDescriptorInSet(foundExtension.getDescriptor(), descriptors)) {
					if (foundExtension.internalGetContentProvider().isTreePath()) {
						TreePath[] parentTreePaths = ((ITreePathContentProvider) foundExtension
								.internalGetContentProvider()).getParents(anElement);
						for (int i = 0; i < parentTreePaths.length; i++) {
							parent = parentTreePaths[i].getLastSegment();
							if ((parent = findParent(foundExtension, anElement, parent)) != null)
								parents.add(parent);
						}
					} else {
						parent = foundExtension.internalGetContentProvider().getParent(anElement);
						if ((parent = findParent(foundExtension, anElement, parent)) != null)
							parents.add(parent);
					}