Bug 84912 [KeyBindings] performance: Lots of garbage when editor gains/loses focus
build i0208 Not sure where to enter this report. Adding Tod and John to CC as they will be involve in performance work this release. I have the Platform/UI heap usage plug-in installed. I notice that when I switch focus from the editor to a view (e.g. Outline), the heap usage increases by a meg or 2. Putting focus back to the editor does the same. This happens with both the text editor and more prominatly with the Java editor. It doesn't matter if the view is docked or is a fast view.
bundles/org.eclipse.jface/src/org/eclipse/jface/bindings/CachedBindingSet.java
*/
	final Map getPrefixTable() {
		return prefixTable;
	}
	/**
	 * Computes the hash code for this cached binding set. The hash code is
	 * based only on the immutable values. This allows the set to be created and
	 * checked for in a hashed collection <em>before</em> doing any
	 * computation.
	 * 
	 * @return The hash code for this cached binding set.
	 */
	public final int hashCode() {
		if (!hashCodeComputed) {
			hashCode = HASH_INITIAL;
			hashCode = hashCode * HASH_FACTOR
					+ Util.hashCode(activeContextTree);
			hashCode = hashCode * HASH_FACTOR + Util.hashCode(locales);
			hashCode = hashCode * HASH_FACTOR + Util.hashCode(platforms);
			hashCode = hashCode * HASH_FACTOR + Util.hashCode(schemeIds);
			hashCodeComputed = true;
		}
		return hashCode;
	}
	/**
	 * Sets the map of command identifiers indexed by trigger.
	 * 
	 * @param commandIdsByTrigger
	 *            The map to set; must not be <code>null</code>. This is a
	 *            map of triggers (<code>Trigger</code>) to command