From a3fcfb61ef640ebd7ad341f94cf35201f241e228 Mon Sep 17 00:00:00 2001
From: peter <peter@jetbrains.com>
Date: Mon, 13 May 2013 17:47:29 +0200
Subject: [PATCH] clear DirectoryIndex maps when closing project, so that even
 leaks won't result in tons of uncollected order entries and strings

---
 .../com/intellij/openapi/roots/impl/DirectoryIndexImpl.java | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/platform/lang-impl/src/com/intellij/openapi/roots/impl/DirectoryIndexImpl.java b/platform/lang-impl/src/com/intellij/openapi/roots/impl/DirectoryIndexImpl.java
index 6b65e62b2967..4c439778edae 100644
--- a/platform/lang-impl/src/com/intellij/openapi/roots/impl/DirectoryIndexImpl.java
+++ b/platform/lang-impl/src/com/intellij/openapi/roots/impl/DirectoryIndexImpl.java
@@ -93,6 +93,12 @@ public class DirectoryIndexImpl extends DirectoryIndex {
       @Override
       public void dispose() {
         myDisposed = true;
+        myState.multiDirPackages.clear();
+        myState.myDirToInfoMap.clear();
+        myState.myDirToPackageName.clear();
+        myState.myExcludeRootsMap.clear();
+        myState.myPackageNameToDirsMap.clear();
+        myState.myProjectExcludeRoots.clear();
       }
     });
   }