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
}
		return ((ITreeContentProvider) cp).hasChildren(anElement);
	}
	private boolean pipelineHasChildren(Object anElementOrPath, Object anElement,
			NavigatorContentExtension[] theOverridingExtensions, boolean suggestedHasChildren) {
		NavigatorContentExtension[] overridingExtensions;
		for (int i = 0; i < theOverridingExtensions.length; i++) {
			SafeDelegateTreeContentProvider cp = theOverridingExtensions[i].internalGetContentProvider();
			if (cp.isPipelinedHasChildren()) {
				suggestedHasChildren = cp.hasPipelinedChildren(
						anElement, suggestedHasChildren);
				overridingExtensions = theOverridingExtensions[i]
						.getOverridingExtensionsForTriggerPoint(anElement);
				if (overridingExtensions.length > 0) {
					suggestedHasChildren = pipelineHasChildren(anElementOrPath, anElement,
							overridingExtensions, suggestedHasChildren);
				}
			} else  {
				suggestedHasChildren |= callNormalHasChildren(anElementOrPath, anElement, cp);
			}
		}
		return suggestedHasChildren;
	}		
	/**
	 * <p>
	 * Handles any necessary clean up of the {@link NavigatorContentService}
	 * </p>
	 * 
	 * <p>
	 * <b>If a client uses this class outside of the framework of