RFR: 6323374: (coll) Optimize Collections.unmodifiable* and synchronized* [v8]
Ian Graves
igraves at openjdk.java.net
Thu Mar 4 22:35:09 UTC 2021
> Modify the `unmodifiable*` methods in `java.util.Collections` to be idempotent. That is, when given an immutable collection from `java.util.ImmutableCollections` or `java.util.Collections`, these methods will return the reference instead of creating a new immutable collection that wraps the existing one.
Ian Graves has updated the pull request incrementally with one additional commit since the last revision:
Commenting intent to not check for subclasses
-------------
Changes:
- all: https://git.openjdk.java.net/jdk/pull/2596/files
- new: https://git.openjdk.java.net/jdk/pull/2596/files/88127ed5..47113ba0
Webrevs:
- full: https://webrevs.openjdk.java.net/?repo=jdk&pr=2596&range=07
- incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=2596&range=06-07
Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
Patch: https://git.openjdk.java.net/jdk/pull/2596.diff
Fetch: git fetch https://git.openjdk.java.net/jdk pull/2596/head:pull/2596
PR: https://git.openjdk.java.net/jdk/pull/2596
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