From 2bafe3458ec87f01fea8decb71ced598599c4736 Mon Sep 17 00:00:00 2001
From: "Maxim.Mossienko" <Maxim.Mossienko@jetbrains.com>
Date: Thu, 2 Apr 2015 18:11:21 +0200
Subject: [PATCH] make visitedRoot to be concurrent set

---
 .../src/com/intellij/util/indexing/FileBasedIndexImpl.java      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
index 7524630e9992..e6245b6108a2 100644
--- a/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
+++ b/platform/lang-impl/src/com/intellij/util/indexing/FileBasedIndexImpl.java
@@ -2608,7 +2608,7 @@ public class FileBasedIndexImpl extends FileBasedIndex {
       });
     }*/
 
-    final Set<VirtualFile> visitedRoots = new THashSet<VirtualFile>();
+    final Set<VirtualFile> visitedRoots = ContainerUtil.newConcurrentSet();
     for (IndexedRootsProvider provider : Extensions.getExtensions(IndexedRootsProvider.EP_NAME)) {
       //important not to depend on project here, to support per-project background reindex
       // each client gives a project to FileBasedIndex