Steve Lawrence created DAFFODIL-2852:
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Summary: VariableMap copies during suspensions cause performance
degredation
Key: DAFFODIL-2852
URL: https://issues.apache.org/jira/browse/DAFFODIL-2852
Project: Daffodil
Issue Type: Bug
Components: Back End, Unparsing
Reporter: Steve Lawrence
Assignee: Steve Lawrence
Fix For: 3.6.0
When a suspension is created when unparsing, we create a copy of the
VariableMap so that future newVariableInstances do not affect the supension.
The current VariableMap internals uses a Map of ArrayBuffers, both of which are
fairly expensive to copy, with the overhead showing up heavily when profiling.
We should change the VariableMap internals to use a data structure that allows
fast copies, while still maintaining constant time lookups.
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