Bug 34040 It takes a minute to expand a project in Package explorer
Build: RC1 For scalability testing, I'm developing against WSADIE. I imported a plug-in whose classpath contains >200 external jar entries. The project is initially collpsed. In the package explorer view, if you click on the + to expand the project, it will take about 60 seconds for the project to expand. After it expanded, I went into the view filters and changed it so that I could see the hidden '.*' files, it will take another minute to update the view.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerContentProvider.java
addPendingChange();
			try {
				ctrl.getDisplay().asyncExec(trackedRunnable); 
			} catch (RuntimeException e) {
				removePendingChange();
				throw e;
			} catch (Error e) {
				removePendingChange();
				throw e; 
			}
		}
	}
	
	
	public synchronized boolean hasPendingChanges() {
		return fPendingChanges > 0;  
	}
	
	private synchronized void addPendingChange() {
		fPendingChanges++;
		
	}
	private synchronized void removePendingChange() {
		fPendingChanges--;
		if (fPendingChanges < 0)
			fPendingChanges= 0;
		
	}
}