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Ran 05 Oct 2020 08:47AM UTC

Files 77

Run time 7s

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Committed 05 Oct 2020 07:33AM UTC coverage: 93.207% (+0.05%) from 93.162%

Job # TERM=dumb ORG_GRADLE_PROJECT_checksumFailOn=build_finish ORG_GRADLE_PROJECT_checksumPrint=true ORG_GRADLE_PROJECT_checksumIgnore=false GROUP=tests

Build Type

push

travis-ci

Committed by

ben-manes

Commit Message

Update to JDK15 field layouts and add deprecations

To protect against false sharing the field layout is padded to utilize
different CPU cache lines. The layout rules were changed in JDK 15
which requires more verbose byte fields to have the desired effect [1].

Due to the striped buffer already guarding against contention, padding
the ring buffer array slots is unecessary.

The softly deprecated classes, SingleConsumerQueue and UnsafeAccess,
are now explicitly deprecated. As Unsafe is still used, access is
obtained using an internal class or, for tests, JCTools' version.
To suppress compiler warnings the imports are inlined.

[1] https://shipilev.net/jvm/objects-inside-out/#_observation_hierarchy_tower_padding_trick_collapse_in_jdk_15

Coverage Stats

6229 of 6683 relevant lines covered (93.21%)

0.93 hits per line

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