Mirror Spring Framework #37159 for JAIPilot Cloud - #1
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LockSupport.park() can return without resume() having set the parked thread reference to READY, either spuriously or when the thread is interrupted. The reference then still points to the current thread, so the compareAndSet in the await() loop can never succeed again and the loop neither parks nor exits, spinning on CPU until the upstream emits the next signal. On virtual threads this is particularly harmful since a spinning thread never yields its carrier. Once as many requests spin as there are carrier threads, unrelated virtual thread tasks are no longer scheduled. The interrupt case is reachable through Spring MVC async request handling, where both a timeout and a client disconnect cancel the task with interruption. Park again when the reference is still owned by the current thread after a spurious wakeup. On interruption, restore the interrupt status, clear the reference, and propagate the cancellation as an InterruptedIOException, unless data has arrived concurrently, in which case the data is delivered first and the interrupt status is preserved for the next call. The read() methods rethrow IOExceptions as-is instead of wrapping them, so the interruption surfaces as a regular IOException to callers. Closes spring-projectsgh-37159 Signed-off-by: donggyu <donggyu@flex.team>
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Exact mirror of spring-projects#37159 for a JAIPilot Cloud evaluation.
Base: 8904790
Head: 7e53799
Do not merge this mirror. Any accepted JAIPilot result will be a draft companion targeting this exact head.