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  • Andreas Klebinger's avatar
    917ef81b
    STM: Be more optimistic when validating in-flight transactions. · 917ef81b
    Andreas Klebinger authored and Marge Bot's avatar Marge Bot committed 
    * Don't lock tvars when performing non-committal validation.
* If we encounter a locked tvar don't consider it a failure.

This means in-flight validation will only fail if committing at the
moment of validation is *guaranteed* to fail.

This prevents in-flight validation from failing spuriously if it happens in
parallel on multiple threads or parallel to thread comitting.
    917ef81b
    History
    STM: Be more optimistic when validating in-flight transactions.
    Andreas Klebinger authored and Marge Bot's avatar Marge Bot committed 
    * Don't lock tvars when performing non-committal validation.
* If we encounter a locked tvar don't consider it a failure.

This means in-flight validation will only fail if committing at the
moment of validation is *guaranteed* to fail.

This prevents in-flight validation from failing spuriously if it happens in
parallel on multiple threads or parallel to thread comitting.
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