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Commits on Dec 23, 2020

• Optimize CRC32C.

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  lowasser

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  Google Java Core Libraries

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Commits on Nov 10, 2020

• Do 16-byte strides in CRC32C in c.g.c.hash, resulting in roughly a 3.3x speedup to 1.5 GB/s.

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  lowasser

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  cgdecker

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• Optimize Hashing.crc32c() by eliminating two xors for every byte of input.

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Commits on Jun 30, 2020

• Implement BigDecimalMath.roundToDouble.

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• Correct LongMath.roundToDouble for values at and near Long.MAX_VALUE

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Commits on Jun 18, 2020

• Add LongMath.roundToDouble.

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Commits on Jun 5, 2020

• Implement BigIntegerMath.roundToDouble, which rounds to the nearest representable double value.

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Commits on Apr 24, 2020

• Fix GitHub google#3873 by reimplementing Cartesian{Set,List}.contains.

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Commits on Feb 27, 2020

• Make Compact(Linked)HashSet fall back to a java.util.LinkedHashSet if hash flooding is detected, just as the immutable collections do.

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  lowasser

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  cpovirk

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Commits on Dec 23, 2019

• Make Compact(Linked)HashMap fall back to a java.util.LinkedHashMap if hash flooding is detected, just as the immutable collections do.

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Commits on Dec 2, 2019

• Annotate benign race in AbstractTable so as to avoid TSAN issues.

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Commits on Apr 29, 2019

• Mitigate google#3223 by guessing that Sets are already deduplicated and making "half and half" expectations about un-duplicated inputs in ImmutableSet creation.

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  ronshapiro

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Commits on Mar 7, 2019

• Optimize ImmutableSet's hash flooding detection, using an algorithm which allows more false positives (though we calibrate the constant factors to compensate) but runs O(log n) times faster on aver…

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Commits on Aug 9, 2018

• Optimize ImmutableCollection.toArray(T[]) as per https://shipilev.net/blog/2016/arrays-wisdom-ancients/, the key goal being to avoid the necessity of zeroing a newly created array where possible.

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Commits on Jul 31, 2018

• Reduce ProGuard retained code from usages of Multimaps.synchronizedXYZMultimap.

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Commits on May 31, 2018

• Fix b/80241237 to correctly *not* change segment weight, nor report an eviction, when a compute() call does not change the present value.

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Commits on May 29, 2018

• Automated rollback of 9e6e1d0

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• Fix google#3156 by implementing a proper CollectSpliterators.flatMapTo{Int,Long,Double}.

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Commits on Apr 25, 2018

• Re-fix google#3081.

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Commits on Apr 3, 2018

• Fix google#3081.

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Commits on Mar 28, 2018

• Open source refactorings directory. This is knowingly very simple, without yet documentation or many refactorings; it's a prototype first.

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Commits on Feb 28, 2018

• Correct a typo in ImmutableBiMapTest.

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Commits on Feb 27, 2018

• Automated g4 rollback of changelist 185433235.

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Commits on Feb 14, 2018

• Document that the compact collections aren't universal wins.

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  lowasser

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Commits on Feb 12, 2018

• Add hash flooding protection to HashBiMap.

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• Add hash flooding protection to ImmutableMultiset, falling back to a JDK HashMap backed implementation when probable flooding is detected.

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Commits on Feb 9, 2018

• In Java 8 branch, fall back to an ImmutableSet backed by j.u.HashSet (and its binary tree magic) if apparent hash flooding is detected.

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Commits on Feb 8, 2018

• In Java 8 branch, fall back to j.u.HashMap based implementation in ImmutableBiMap if hash flooding appears probable. (Partially motivated by external feature requests, partially by []

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Commits on Feb 2, 2018

• In Java 8 branch, fall back to j.u.HashMap based implementation in ImmutableMap if hash flooding appears probable. (Partially motivated by external feature requests, partially by []

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Commits on Jan 19, 2018

• Improve allocation behavior of Multiset copying and addAll implementations in both Guava versions.

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• Add efficient TreeMultiset.forEachEntry.

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Commits on Jan 18, 2018

• Add implementation for EnumMultiset.forEachEntry.

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• Improve allocation behavior of ImmutableMultiset.Builder.addAll(Multiset).

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Commits on Jan 17, 2018

• Add allocation measurements for basic immutable collection operations.

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Commits on Jan 8, 2018

• Overhaul Android {Hash,LinkedHash}Multiset to operate much more directly on ObjectCountHashMap, eliminating many unnecessary classes, allocations, and even calls to hashCode on the elements.

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