JDK-6810254 : Lazily instantiate the shared secret access objects
  • Type: Bug
  • Component: other-libs
  • Sub-Component: other
  • Affected Version: 7
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2009-02-25
  • Updated: 2010-04-02
  • Resolved: 2009-03-27
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JDK 6 JDK 7
6u14Fixed 7 b53Fixed
Related Reports
Relates :  
JDK-6829503 - addShutdownHook fails if called after shutdown has commenced.
Relates :  
JDK-6798873 - Reduce the number of classes loaded and class dependencies
Description
sun.misc.Java*Access objects are created at initialization time.  They are only needed when certain API is used.  They can be initialized lazily when needed.

These shared secret access object provides a mechanism for calling implementation-private methods in another package while avoiding the primary disadvantage of using reflection for this purpose, namely the loss of compile-time checking.
Comments
SUGGESTED FIX See attached patch.
13-03-2009
EVALUATION The fix is to register the shutdown hooks only when needed so that java.io.Console and other implementation classes for deleteOnExit hooks and application hooks are not loaded unless they are needed. JavaIODeleteOnExitAccess will be removed and the other shared secret access objects will remain to be set up during initialization.
12-03-2009
EVALUATION Decouple class dependency for JDK7
26-02-2009