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Enhancement
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Resolution: Fixed
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P4
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17, 18
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b26
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aarch64
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
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| JDK-8294123 | 17.0.6-oracle | Tobias Hartmann | P4 | Resolved | Fixed | b01 |
| JDK-8293750 | 17.0.6 | Dmitry Chuyko | P4 | Resolved | Fixed | b01 |
The AArch64 fast_unlock C2 code checks if the current thread owns the lock. This can be surprisingly expensive in workload where locking is contended. The check is however optional (helpful only for finding JNI code bugs), and indeed not emitted for x86_64. We should consider removing it on AArch64.
- backported by
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JDK-8293750 C2 fast_unlock intrinsic on AArch64 has unnecessary ownership check
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- Resolved
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- Resolved
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- relates to
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- Resolved
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- links to
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Commit
openjdk/jdk17u-dev/b196bc4c
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Commit
openjdk/jdk/3d810ad6
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Review
openjdk/jdk17u-dev/660
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Review
openjdk/jdk/6498
(2 links to)