On Tue, 16 Nov 2021 02:45:13 GMT, Leonid Mesnik <lmes...@openjdk.org> wrote:
>> The nsk.share.jdi.TestClass1 is used via reflection. The reflective call
>> creates MethodHandle and one more reference to TestClass1. So the number of
>> expected references should be incremented. Thanks to @plummercj and
>> @mlchung for the investigation.
>> This fix also prints references to inspected class.
>
> Leonid Mesnik has updated the pull request incrementally with one additional
> commit since the last revision:
>
> updated
The debugger doesn't show MemberName::clazz, but I could see it in heapdump. It
seems because it doesn't have GC root and should be here by JDI spec.
And the MethodType is referred from 'static final
ConcurrentWeakInternSet<MethodType> internTable = new
ConcurrentWeakInternSet<>();’' from java/lang/invoke/MethodType.java.
See ref tree:
instance of java.lang.invoke.MethodType(id=883)
instance of
java.lang.invoke.MethodType$ConcurrentWeakInternSet$WeakEntry(id=887)
instance of java.util.concurrent.ConcurrentHashMap$Node(id=888)
instance of java.util.concurrent.ConcurrentHashMap$Node[1024] (id=890)
instance of java.util.concurrent.ConcurrentHashMap(id=892)
instance of java.lang.invoke.MethodType$ConcurrentWeakInternSet(id=894)
instance of java.lang.Class(reflected class=java.lang.invoke.MethodType,
id=72)
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PR: https://git.openjdk.java.net/jdk/pull/6402
