Thread Safety

Parser (parboiled for Java)

The parser classes created by parboiled for Java are not thread-safe. This means you have to create a separate parser instance for each thread you would like to run your parser concurrently from. However, once parboiled has extended your parser class during the initial call to Parboiled.createParser all further parser object instantiations are fast. If your application needs to regularly create a lot of parser instances you should also consider using the BaseParser.newInstance call for creating your parsers. Since this call does not use reflection for object creation it is significantly faster than Parboiled.createParser.

Rule Tree

Since the rule tree does not hold any state during rule execution it should be concurrently usable by multiple parser instances from multiple threads, once you have a rule tree built and the root rule properly created.

ParseRunners

Similar to the parser itself the ParseRunner implementations provided by parboiled are not threadsafe. This means that you should not use the same instance concurrently from multiple threads without synchronization. However, since ParseRunners are lightweight you can just create new instances for every parse (which is exactly what the static run(…) methods (like ReportingParseRunner.run) do).

Content

Introduction
... Motivation
... Features
... Simple Java Example
... Simple Scala Example
... RegEx vs. parboiled vs. Parser Generators
... Projects using parboiled
Installation
Concepts
... The Big Picture
... The Rule Tree
... The Value Stack
... The Parse Tree
... AST Construction
... Parse Error Handling
parboiled for Java
... Rule Construction in Java
... Parser Action Expressions
... Working with the Value Stack
... Action Variables
... Parser Extension in Detail
... Style Guide
... Java Examples
...... ABC Grammar
...... Calculators
...... Time Parser
...... Java Parser
...... Markdown processor
parboiled for Scala
... Rule Construction in Scala
... Parser Actions in Scala
... Parser Testing in Scala
... Scala Examples
...... Simple Calculator
...... JSON Parser
Advanced Topics
... Handling Whitespace
... Parsing Performance Tuning
... Indentation Based Grammars
... The ProfilingParseRunner
... Grammar and Parser Debugging
... Thread Safety
Building parboiled
parboiled-core Javadoc API
parboiled-java Javadoc API
parboiled-scala Scaladoc API
Change Log
Patch Policy

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Thread Safety

Parser (parboiled for Java)

Rule Tree

ParseRunners

Content

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