7127687: MethodType leaks memory due to interning

Vitaly Davidovich vitalyd at gmail.com
Thu Mar 29 00:42:56 UTC 2012

Hi John,

I think you can use diamond generic inference when declaring the weak
intern set.

Also any reason you didn't use WeakHashMap directly with dummy value to
simulate the set? Or wrap the WeakHashMap and synchronize the accessors to

Sent from my phone
On Mar 28, 2012 7:52 PM, "John Rose" <john.r.rose at oracle.com> wrote:

> http://cr.openjdk.java.net/~jrose/7127687/webrev.00/
> 7127687: MethodType leaks memory due to interning
> Summary: Replace internTable with a weak-reference version.
> This is a point fix for JDK 8, and will (pending approval) also be
> back-ported to JDK 7u.
> — John
> Notes on process:  This code is part of JSR 292.  Therefore the review
> comments will be collected in mlvm-dev, and changes will be integrated via
> hsx/hotspot-comp.
> At least one reviewer must be an official Reviewer the JDK 8 Project [1],
> but other reviewers are most welcome.
> [1] http://openjdk.java.net/census#jdk8
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