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net.sourceforge.pmd.rules
Class DoubleCheckedLocking

java.lang.Object
 extended by net.sourceforge.pmd.CommonAbstractRule
 extended by net.sourceforge.pmd.AbstractJavaRule
 extended by net.sourceforge.pmd.rules.DoubleCheckedLocking

All Implemented Interfaces:

JavaParserVisitor, Rule

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public class DoubleCheckedLocking
extends AbstractJavaRule

void method() { if(x == null) { synchronized(this){ if(x == null) { x = new | method(); } } } 1. The error is when one uses the value assigned within a synchronized section, outside of a synchronized section. if(x == null) is outside of synchronized section x = new | method();

Very very specific check for double checked locking.

Author:

CL Gilbert (dnoyeb@users.sourceforge.net)

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Field Summary

Fields inherited from interface net.sourceforge.pmd.Rule
LOWEST_PRIORITY, PRIORITIES

Constructor Summary
DoubleCheckedLocking()

Method Summary
java.lang.Object	visit(ASTClassOrInterfaceDeclaration node, java.lang.Object data)
java.lang.Object	visit(ASTCompilationUnit compilationUnit, java.lang.Object data)
java.lang.Object	visit(ASTFieldDeclaration fieldDeclaration, java.lang.Object data)
java.lang.Object	visit(ASTMethodDeclaration node, java.lang.Object data)

Methods inherited from class net.sourceforge.pmd.AbstractJavaRule

addViolation, addViolation, addViolation, addViolationWithMessage, apply, getDeclaringType, importsPackage, isQualifiedName, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visitAll

Methods inherited from class net.sourceforge.pmd.CommonAbstractRule

addExample, addProperties, addProperty, addRuleChainVisit, asFixedMap, asFixedMap, end, equals, getBooleanProperties, getBooleanProperty, getBooleanProperty, getDescription, getDoubleProperties, getDoubleProperty, getDoubleProperty, getExample, getExamples, getExternalInfoUrl, getIntProperties, getIntProperty, getIntProperty, getMessage, getName, getPriority, getPriorityName, getProperties, getRuleChainVisits, getRuleClass, getRuleSetName, getSince, getStringProperties, getStringProperty, getStringProperty, getTypeProperties, getTypeProperty, hashCode, hasProperty, include, propertiesByName, propertyDescriptorFor, setDescription, setExternalInfoUrl, setInclude, setMessage, setName, setPriority, setProperties, setProperty, setRuleClass, setRuleSetName, setSince, setUsesDFA, setUsesTypeResolution, start, usesDFA, usesRuleChain, usesTypeResolution

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DoubleCheckedLocking

public DoubleCheckedLocking()

Method Detail

visit

public java.lang.Object visit(ASTCompilationUnit compilationUnit,
 java.lang.Object data)

Specified by:

visit in interface JavaParserVisitor

Overrides:

visit in class AbstractJavaRule

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visit

public java.lang.Object visit(ASTClassOrInterfaceDeclaration node,
 java.lang.Object data)

Specified by:

visit in interface JavaParserVisitor

Overrides:

visit in class AbstractJavaRule

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visit

public java.lang.Object visit(ASTFieldDeclaration fieldDeclaration,
 java.lang.Object data)

Specified by:

visit in interface JavaParserVisitor

Overrides:

visit in class AbstractJavaRule

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visit

public java.lang.Object visit(ASTMethodDeclaration node,
 java.lang.Object data)

Specified by:

visit in interface JavaParserVisitor

Overrides:

visit in class AbstractJavaRule

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