[lucenenet] 07/07: Lucene.Net.Store.OutputStreamDataOutput: 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 e9c47b2dea45097a2761ebf2b3695adc456e8f26
Author: Shad Storhaug <sh...@shadstorhaug.com>
AuthorDate: Sun May 14 23:04:14 2023 +0700

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

diff --git a/src/Lucene.Net/Store/OutputStreamDataOutput.cs b/src/Lucene.Net/Store/OutputStreamDataOutput.cs
index f635a2b36..7a96de6a8 100644
--- a/src/Lucene.Net/Store/OutputStreamDataOutput.cs
+++ b/src/Lucene.Net/Store/OutputStreamDataOutput.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 OutputStreamDataOutput : DataOutput, IDisposable
     {
         private readonly Stream _os;
+        private int disposed = 0; // LUCENENET specific - allow double-dispose
 
         public OutputStreamDataOutput(Stream os)
         {
@@ -60,6 +62,8 @@ namespace Lucene.Net.Store
         // LUCENENET specific - implemented proper dispose pattern
         protected virtual void Dispose(bool disposing)
         {
+            if (0 != Interlocked.CompareExchange(ref this.disposed, 1, 0)) return; // LUCENENET specific - allow double-dispose
+
             if (disposing)
             {
                 _os.Dispose();