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  1. JDK
  2. JDK-8133300

Ensure symbol table immutability in Nashorn AST

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    • generic

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        Symbol tables (and symbols themselves) are mutable in Nashorn at the moment. They're the last mutable piece of AST. We should make them immutable; this would allow moving SYMBOL_ASSIGNMENT_PHASE and compilation phases into COMPILE_UPTO_SERIALIZABLE phase group, before SERIALIZE_SPLIT_PHASE. That in turn would allow us to keep ASTs weakly reachable and reuse them in optimistic recompilations as only OPTIMISTIC_TYPE_ASSIGNMENT_PHASE and LOCAL_VARIABLE_TYPE_CALCULATION_PHASE would need to be re-run. That could cut down on compilation cost significantly as we would need to reparse much less frequently while doing deoptimizing recompilation.

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            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8140988 Ensure symbol table immutability in Nashorn AST

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

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8142259 Ensure symbol table immutability in Nashorn AST

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

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8147357 Ensure symbol table immutability in Nashorn AST

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

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8136618 Ensure symbol table immutability in Nashorn AST

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

            Sub-task - The sub-task of the issue JDK-8013860 Need Block.putSymbol to be copy on write

            • P3 - Major loss of function.
            • Resolved
            relates to

            Enhancement - null JDK-8134292 Enable caching of eager pre-pass AST

            • P5 - Cosmetic problem like misspelt words or misaligned text.
            • Closed

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                attila Attila Szegedi
                attila Attila Szegedi
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