[lucenenet] 06/07: Lucene.Net.Store.InputStreamDataInput: Allow double-dispose calls and guard against usage after Dispose(). See #265.

[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 5336dfc16e38c9ced9dbc3b4ab138cc0828e507e
Author: Shad Storhaug <sh...@shadstorhaug.com>
AuthorDate: Sun May 14 23:03:28 2023 +0700

    Lucene.Net.Store.InputStreamDataInput: Allow double-dispose calls and guard against usage after Dispose(). See #265.
---
 src/Lucene.Net/Store/InputStreamDataInput.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Lucene.Net/Store/InputStreamDataInput.cs b/src/Lucene.Net/Store/InputStreamDataInput.cs
index b9462397a..8b450561b 100644
--- a/src/Lucene.Net/Store/InputStreamDataInput.cs
+++ b/src/Lucene.Net/Store/InputStreamDataInput.cs
@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Threading;
 
 namespace Lucene.Net.Store
 {
@@ -26,6 +27,7 @@ namespace Lucene.Net.Store
     public class InputStreamDataInput : DataInput, IDisposable
     {
         private readonly Stream _is;
+        private int disposed = 0; // LUCENENET specific - allow double-dispose
 
         public InputStreamDataInput(Stream @is)
         {
@@ -65,6 +67,8 @@ namespace Lucene.Net.Store
 
         protected virtual void Dispose(bool disposing)
         {
+            if (0 != Interlocked.CompareExchange(ref this.disposed, 1, 0)) return; // LUCENENET specific - allow double-dispose
+
             if (disposing)
             {
                 _is.Dispose();