> Please review this change to replace the finalizer in 
> `AbstractLdapNamingEnumeration` with a Cleaner.
> The pieces of state required for cleanup (`LdapCtx homeCtx`, `LdapResult 
> res`, and `LdapClient enumClnt`) are moved to a static inner class . From 
> there, the change is fairly mechanical.
> Details of note: 
> 1. Some operations need to change the state values (the update() method is 
> probably the most interesting).
> 2. Subclasses need to access `homeCtx`; I added a `homeCtx()` method to read 
> `homeCtx` from the superclass's `state`.
> The test case is based on a copy of 
> `com/sun/jndi/ldap/blits/AddTests/AddNewEntry.java`. A more minimal test case 
> might be possible, but this was done for expediency.
> The test only confirms that the new Cleaner use does not keep the object 
> reachable. It only tests `LdapSearchEnumeration` (not `LdapNamingEnumeration` 
> or `LdapBindingEnumeration`, though all are subclasses of 
> `AbstractLdapNamingEnumeration`). 
> Thanks.

Brent Christian has updated the pull request incrementally with one additional 
commit since the last revision:

  Threading-related fixes


  - all: https://git.openjdk.java.net/jdk/pull/8311/files
  - new: https://git.openjdk.java.net/jdk/pull/8311/files/a48a56cc..ef8c1410

 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8311&range=06
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8311&range=05-06

  Stats: 371 lines in 5 files changed: 122 ins; 87 del; 162 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8311.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8311/head:pull/8311

PR: https://git.openjdk.java.net/jdk/pull/8311

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