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

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)

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

visit

public java.lang.Object visit(ASTClassOrInterfaceDeclaration node,
                              java.lang.Object data)
Specified by:
visit in interface JavaParserVisitor
Overrides:
visit in class AbstractJavaRule

visit

public java.lang.Object visit(ASTFieldDeclaration fieldDeclaration,
                              java.lang.Object data)
Specified by:
visit in interface JavaParserVisitor
Overrides:
visit in class AbstractJavaRule

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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