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/NavigatorContentService.java
private NavigatorSaveablesService navigatorSaveablesService;
	private NavigatorExtensionStateService navigatorExtensionStateService;
	private IDescriptionProvider descriptionProvider;
	private boolean contentProviderInitialized;
	private boolean labelProviderInitialized;
	private boolean isDisposed;
	
	/**
	 * @param aViewerId
	 *            The viewer id for this content service; normally from the
	 *            <b>org.eclipse.ui.views</b> extension.
	 */
	public NavigatorContentService(String aViewerId) {
		super();
		aViewerId = aViewerId != null ? aViewerId : ""; 
		viewerDescriptor = VIEWER_DESCRIPTOR_REGISTRY
				.getNavigatorViewerDescriptor(aViewerId);
		assistant = new VisibilityAssistant(viewerDescriptor,
				getActivationService());
		getActivationService().addExtensionActivationListener(this);
		contributionMemory = new HashMap();
		contributionMemoryFirstClass = new HashMap();
	}
	/**
	 * @param aViewerId
	 *            The viewer id for this content service; normally from the
	 *            <b>org.eclipse.ui.views</b> extension.
	 * @param aViewer
	 *            The viewer that this content service will be associated with.
	 */