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  1. JDK
  2. JDK-8271348

Add stronger sanity check of thread state when polling for safepoint/handshakes

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Details

    • Enhancement
    • Resolution: Fixed
    • P4
    • 18
    • 18
    • hotspot
    • b09

    Description

      SafepointSynchronize::block() checks the _thread_state of the JT and exits with fatal error if the state is not valid. The JT could have the wrong state when checking for safepoint/handshakes but due to timing issues we might not notice it, i.e. there are no current safepoint operations to block for so we never call SafepointSynchronize::block(). A sanity check of the JT state could be added in SafepointMechanism right before checking for pending safepoint operations and calling SafepointSynchronize::block().

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        1. 8271348.cr0.patch
          5 kB
          Daniel Daugherty

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              dcubed Daniel Daugherty
              pchilanomate Patricio Chilano Mateo
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                Created:
                Updated:
                Resolved: