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Type:
Enhancement
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Resolution: Fixed
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Priority:
P4
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Affects Version/s: 17, 18
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Component/s: hotspot
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b19
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aarch64
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linux
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-8308849 | 17.0.8 | Aleksey Shipilev | P4 | Resolved | Fixed | b04 |
Atomic::add and its variants are sometimes used in HotSpot C++ code with memory_order_relaxed, in places where an atomic RMW is needed but ordering is not. The linux-aarch64 platform currently ignores the memory order argument and always performs a conservative operation, possibly affecting performance. It should instead use a relaxed atomic add where requested. Other ordering variants for add operations aren't currently used, so don't need specialization.
- backported by
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JDK-8308849 Support relaxed atomic add for linux-aarch64
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- Resolved
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- relates to
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- Open
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- Closed
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- links to
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Commit
openjdk/jdk17u-dev/861fe74b
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Commit
openjdk/jdk/8de26361
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Review
openjdk/jdk17u-dev/1383
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Review
openjdk/jdk/5785
(2 links to)