RFR: 8263551: Provide shared lock-free FIFO queue implementation

Man Cao manc at openjdk.java.net
Sat Mar 13 10:48:21 UTC 2021


Hi all,

Could anyone review this change that is mainly code motion? It creates a generalized lock-free queue implementation based on G1DirtyCardQueueSet::Queue, which will be used by JDK-8236485 in the future.

The shared LockFreeQueue is similar to the existing LockFreeStack. The notable difference is that the LockFreeQueue has an additional template parameter for whether to use GlobalCounter::CriticalSection to avoid ABA problem.

-Man

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Commit messages:
 - 8263551: Provide shared lock-free FIFO queue implementation

Changes: https://git.openjdk.java.net/jdk/pull/2986/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2986&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263551
  Stats: 365 lines in 4 files changed: 232 ins; 131 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2986.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2986/head:pull/2986

PR: https://git.openjdk.java.net/jdk/pull/2986


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