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Type: Enhancement
Resolution: Fixed
Priority: P4
Fix Version/s: 9
Affects Version/s: None
Component/s: core-libs
Labels:
- noreg-perf
- ursqe-no-regtest
Environment:

9

Subcomponent:
jdk.nashorn
Resolved In Build:
b81
CPU:

generic
OS:

generic

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8142259	emb-9	Attila Szegedi	P4	Resolved	Fixed	team
JDK-8140988	8u91	Attila Szegedi	P4	Resolved	Fixed	b01
JDK-8136618	8u72	Attila Szegedi	P4	Closed	Fixed	b01
JDK-8147357	emb-8u91	Attila Szegedi	P4	Resolved	Fixed	b01

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.

backported by

JDK-8140988 Ensure symbol table immutability in Nashorn AST

Resolved

JDK-8142259 Ensure symbol table immutability in Nashorn AST

Resolved

JDK-8147357 Ensure symbol table immutability in Nashorn AST

Resolved

JDK-8136618 Ensure symbol table immutability in Nashorn AST

Closed

duplicates

JDK-8013860 Need Block.putSymbol to be copy on write

Closed

relates to

JDK-8134292 Enable caching of eager pre-pass AST

Closed

(1 relates to)

Assignee:: Attila Szegedi

Reporter:: Attila Szegedi

Votes:: 0 Vote for this issue

Watchers:: 2 Start watching this issue

Created:: 2015-08-10 17:01

Updated:: 2016-01-14 05:06

Resolved:: 2015-08-31 06:24

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