[lucenenet] 13/29: Lucene.Net.Support.IO.FileSupport::fileCanonPathCache needs to be threadsafe

[ni...@apache.org]

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nightowl888 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/lucenenet.git

commit 2cfaf3a6cada976ca114f84d4f58a2cdc9c1eff9
Author: Thomas Mathew <th...@microsoft.com>
AuthorDate: Thu Jun 6 17:11:42 2019 -0700

    Lucene.Net.Support.IO.FileSupport::fileCanonPathCache needs to be threadsafe
---
 src/Lucene.Net/Support/IO/FileSupport.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Lucene.Net/Support/IO/FileSupport.cs b/src/Lucene.Net/Support/IO/FileSupport.cs
index db64b87..55e722a 100644
--- a/src/Lucene.Net/Support/IO/FileSupport.cs
+++ b/src/Lucene.Net/Support/IO/FileSupport.cs
@@ -1,5 +1,6 @@
 using Lucene.Net.Util;
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -179,7 +180,7 @@ namespace Lucene.Net.Support.IO
             return Path.Combine(directory.FullName, string.Concat(prefix, randomFileName));
         }
 
-        private static readonly IDictionary<string, string> fileCanonPathCache = new Dictionary<string, string>();
+        private static readonly IDictionary<string, string> fileCanonPathCache = new ConcurrentDictionary<string, string>();
 
         /// <summary>
         /// Returns the absolute path of this <see cref="FileSystemInfo"/> with all references resolved and