Re: registering gc life cycle events ...
On 01/17/2010 08:08 PM, lbrtchx@gmail.com wrote:
but what I'd wish some class would have is hooks like:
~
.doRightBeforeCollection(Object ORBC, boolean Do) and .doRightAfterCollection(Object ORAC, boolean Do)
~
How about
<http://java.sun.com/javase/6/docs/api/java/lang/ref/package-summary.html>?
Well, that gets you the "after collection" part (with
PhantomReferences), and I think you can set it up with a WeakReference
to do a "before collection". Granted, it's not *right* before or after,
but there really is no way to do that because of how the GC is threaded.
I think this would be safe for the GC because even if some sloppy
coder would not close/ finalize an open input stream, the GC would
pick up from there and claim that mess too
I believe the input streams override finalize() to call close() anyways.
Well, the File and Socket streams do at least. It seems, on briefly
looking through some major Java classes, that many classes which hold
open native resources override finalize() to close out those resources.
--
Beware of bugs in the above code; I have only proved it correct, not
tried it. -- Donald E. Knuth