Package org.springframework.util
Class WeakReferenceMonitor
- java.lang.Object
- org.springframework.util.WeakReferenceMonitor
@Deprecated public class WeakReferenceMonitor extends Object
Deprecated.as of Spring Framework 4.3.6Track references to arbitrary objects using proxy and weak references. To monitor a handle, one should callmonitor(Object, ReleaseListener)
, with the given handle object usually being a holder that uses the target object underneath, and the release listener performing cleanup of the target object once the handle is not strongly referenced anymore.When a given handle becomes weakly reachable, the specified listener will be called by a background thread. This thread will only be started lazily and will be stopped once no handles are registered for monitoring anymore, to be restarted if further handles are added.
Thanks to Tomasz Wysocki for the suggestion and the original implementation of this class!
- Since:
- 1.2
- Author:
- Colin Sampaleanu, Juergen Hoeller
- See Also:
monitor(java.lang.Object, org.springframework.util.WeakReferenceMonitor.ReleaseListener)
Nested Class Summary
Nested Classes Modifier and Type Class Description static interface
WeakReferenceMonitor.ReleaseListener
Deprecated.Listener that is notified when the handle is being released.
Constructor Summary
Constructors Constructor Description WeakReferenceMonitor()
Deprecated.
Method Summary
All Methods Static Methods Concrete Methods Deprecated Methods Modifier and Type Method Description static void
monitor(Object handle, WeakReferenceMonitor.ReleaseListener listener)
Deprecated.Start to monitor given handle object for becoming weakly reachable.
Constructor Detail
WeakReferenceMonitor
public WeakReferenceMonitor()
Deprecated.
Method Detail
monitor
public static void monitor(Object handle, WeakReferenceMonitor.ReleaseListener listener)
Deprecated.Start to monitor given handle object for becoming weakly reachable. When the handle isn't used anymore, the given listener will be called.- Parameters:
handle
- the object that will be monitoredlistener
- the listener that will be called upon release of the handle