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Bug
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Resolution: Fixed
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P3
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16
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b26
Nightly tests revealed a deadlock after JDK-8256415.
The new concurrent code root evacuating/updating task sets up EvacOOM scope on the top level. If OOM occurs and nmethod_entry_barrier holds per-nmethod lock, while concurrent code root evacuating/updating task tries to acquire the exact per-nmethod lock, we deadlock.
The solution is to move EvacOOM scope under per-nmethod lock.
The new concurrent code root evacuating/updating task sets up EvacOOM scope on the top level. If OOM occurs and nmethod_entry_barrier holds per-nmethod lock, while concurrent code root evacuating/updating task tries to acquire the exact per-nmethod lock, we deadlock.
The solution is to move EvacOOM scope under per-nmethod lock.
- relates to
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JDK-8256415 Shenandoah: Should evacuate/update codecache concurrently when class unloading is off
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- Resolved
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