Proposal: @Unloadable Class defination (original) (raw)

Joseph D. Darcy Joe.Darcy at Sun.COM
Tue Mar 24 10:39:07 PDT 2009

Daniel Cheng wrote:

AUTHOR(S): Daniel Cheng (aka SDiZ)

OVERVIEW Introduce a @Unloadable annotation to allow a class to be unloaded even if the ClassLoader is still accessible. FEATURE SUMMARY: Introduce a @Unloadable annotation to allow a class to be unloaded even if the ClassLoader is still accessible. This allow opt-in Classes to be optionally unloaded in memory constrained environment.

What would that mean exactly to all those poor objects on the heap needing that classloader?

When could this unloading occur, anytime, never?

A related issue is being able to call close on a ClassLoader, a capability added to URLClassLoader in JDK 7: http://blogs.sun.com/CoreJavaTechTips/entry/closing_a_urlclassloader

-Joe

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