sync collections used in ReferencesSearch

java/java-impl/src/com/intellij/refactoring/extractMethod/ExtractMethodProcessor.java

@@ -404,8 +404,8 @@ public class ExtractMethodProcessor implements MatchProvider {
     });
     for(PsiClass localClass: localClasses) {
       final boolean classExtracted = isExtractedElement(localClass);
-      final List<PsiElement> extractedReferences = new ArrayList<PsiElement>();
-      final List<PsiElement> remainingReferences = new ArrayList<PsiElement>();
+      final List<PsiElement> extractedReferences = Collections.synchronizedList(new ArrayList<PsiElement>());
+      final List<PsiElement> remainingReferences = Collections.synchronizedList(new ArrayList<PsiElement>());
       ReferencesSearch.search(localClass).forEach(new Processor<PsiReference>() {
         public boolean process(final PsiReference psiReference) {
           final PsiElement element = psiReference.getElement();

java/java-impl/src/com/intellij/refactoring/inline/InlineLocalHandler.java

@@ -86,8 +86,8 @@ public class InlineLocalHandler extends JavaInlineActionHandler {
     }
 
     final PsiClass containingClass = PsiTreeUtil.getParentOfType(local, PsiClass.class);
-    final List<PsiClass> innerClassesWithUsages = new ArrayList<PsiClass>();
-    final List<PsiElement> innerClassUsages = new ArrayList<PsiElement>();
+    final List<PsiClass> innerClassesWithUsages = Collections.synchronizedList(new ArrayList<PsiClass>());
+    final List<PsiElement> innerClassUsages = Collections.synchronizedList(new ArrayList<PsiElement>());
     query.forEach(new Processor<PsiReference>() {
       public boolean process(final PsiReference psiReference) {
         final PsiElement element = psiReference.getElement();

java/java-impl/src/com/intellij/refactoring/inline/InlineParameterHandler.java

@@ -40,10 +40,7 @@ import com.intellij.refactoring.util.RefactoringMessageDialog;
 import com.intellij.util.Processor;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.HashSet;
-import java.util.List;
+import java.util.*;
 
 /**
  * @author yole
@@ -74,8 +71,8 @@ public class InlineParameterHandler extends JavaInlineActionHandler {
     final Ref<PsiExpression> refInitializer = new Ref<PsiExpression>();
     final Ref<PsiExpression> refConstantInitializer = new Ref<PsiExpression>();
     final Ref<PsiCallExpression> refMethodCall = new Ref<PsiCallExpression>();
-    final List<PsiReference> occurrences = new ArrayList<PsiReference>();
-    final Collection<PsiFile> containingFiles = new HashSet<PsiFile>();
+    final List<PsiReference> occurrences = Collections.synchronizedList(new ArrayList<PsiReference>());
+    final Collection<PsiFile> containingFiles = Collections.synchronizedSet(new HashSet<PsiFile>());
     containingFiles.add(psiParameter.getContainingFile());
     boolean result = ReferencesSearch.search(method).forEach(new Processor<PsiReference>() {
       public boolean process(final PsiReference psiReference) {

java/java-impl/src/com/intellij/refactoring/move/moveClassesOrPackages/MoveClassToInnerProcessor.java

@@ -407,7 +407,7 @@ public class MoveClassToInnerProcessor extends BaseRefactoringProcessor {
       myConflicts = conflicts;
     }
 
-    public void addConflict(final PsiElement targetElement, final PsiElement sourceElement) {
+    public synchronized void addConflict(final PsiElement targetElement, final PsiElement sourceElement) {
       PsiElement container = ConflictsUtil.getContainer(sourceElement);
       if (!myReportedContainers.contains(container)) {
         myReportedContainers.add(container);

java/java-impl/src/com/intellij/refactoring/move/moveClassesOrPackages/MoveClassesOrPackagesProcessor.java

@@ -560,7 +560,7 @@ public class MoveClassesOrPackagesProcessor extends BaseRefactoringProcessor {
       }
     }
 
-    private void visitMemberReference(final PsiModifierListOwner member, PsiReferenceExpression qualified, final RefactoringUtil.IsDescendantOf descendantOf) {
+    private synchronized void visitMemberReference(final PsiModifierListOwner member, PsiReferenceExpression qualified, final RefactoringUtil.IsDescendantOf descendantOf) {
       if (member.hasModifierProperty(PsiModifier.PACKAGE_LOCAL)) {
         visitPackageLocalMemberReference(qualified, member);
       } else if (member.hasModifierProperty(PsiModifier.PROTECTED)) {

java/java-impl/src/com/intellij/refactoring/util/FixableUsagesRefactoringProcessor.java

@@ -27,6 +27,7 @@ import com.intellij.xml.util.XmlUtil;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 public abstract class FixableUsagesRefactoringProcessor extends BaseRefactoringProcessor {
@@ -56,7 +57,7 @@ public abstract class FixableUsagesRefactoringProcessor extends BaseRefactoringP
 
   @NotNull
   protected final UsageInfo[] findUsages() {
-    final List<FixableUsageInfo> usages = new ArrayList<FixableUsageInfo>();
+    final List<FixableUsageInfo> usages = Collections.synchronizedList(new ArrayList<FixableUsageInfo>());
     findUsages(usages);
     final int numUsages = usages.size();
     final FixableUsageInfo[] usageArray = usages.toArray(new FixableUsageInfo[numUsages]);

java/java-impl/src/com/intellij/refactoring/util/InlineUtil.java

@@ -33,6 +33,7 @@ import org.jetbrains.annotations.NonNls;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 
 /**
@@ -254,7 +255,7 @@ public class InlineUtil {
   }
 
   public static boolean allUsagesAreTailCalls(final PsiMethod method) {
-    final List<PsiReference> nonTailCallUsages = new ArrayList<PsiReference>();
+    final List<PsiReference> nonTailCallUsages = Collections.synchronizedList(new ArrayList<PsiReference>());
     boolean result = ProgressManager.getInstance().runProcessWithProgressSynchronously(new Runnable() {
       public void run() {
         ReferencesSearch.search(method).forEach(new Processor<PsiReference>() {