Implements a barrier that periodically asks the
org.apache.tapestry.internal.services.UpdateListenerHub to check for updates to files.
The UpdateListenerHub is invoked from a write method, meaning that when it is called, all other
threads will be blocked.
public CheckForUpdatesFilter(UpdateListenerHub updateListenerHub, long checkInterval, long updateTimeout)(Code)
Parameters: updateListenerHub - invoked, at intervals, to spur the process of detecting changes Parameters: checkInterval - interval, in milliseconds, between checks Parameters: updateTimeout - time, in milliseconds, to wait to obtain update lock.