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  1. JDK
  2. JDK-8207359

Make SymbolTable increment_refcount disallow zero

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Details

    • Enhancement
    • Resolution: Fixed
    • P3
    • 12
    • 12
    • hotspot
    • None
    • b04

    Description


      SymbolTable::increment_refcount() should check for and disallow incrementing the refcount to observe a zero value.

      This can happen if another thread is decrementing the refcount while we are incrementing it. If the other thread decrements the refcount to zero, we cannot return this symbol. This is only possible during insertion into the concurrent hashtable.

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        Issue Links

          blocks

          Enhancement - null JDK-8195100 Use a low latency hashtable for SymbolTable

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8208084 Windows build failure - "'snprintf': identifier not found"

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Enhancement - null JDK-8239347 Refactor Symbol to make _length a standalone field again

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

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              coleenp Coleen Phillimore
              coleenp Coleen Phillimore
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                Updated:
                Resolved: