enhance: force kill the previous git status process (#2358)

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/Commands/QueryLocalChanges.cs

@@ -34,9 +34,24 @@ public QueryLocalChanges(string repo, bool includeUntracked = true, bool noOptio
             try
             {
                 using var proc = new Process();
+                var captured = new CapturedProcess() { Process = proc };
+                var capturedLock = new object();
+
                 proc.StartInfo = CreateGitStartInfo(true);
                 proc.Start();
 
+                if (CancellationToken.CanBeCanceled)
+                {
+                    CancellationToken.Register(() =>
+                    {
+                        lock (capturedLock)
+                        {
+                            if (captured is { Process: { HasExited: false } })
+                                captured.Process.Kill(true);
+                        }
+                    });
+                }
+
                 while (await proc.StandardOutput.ReadLineAsync().ConfigureAwait(false) is { } line)
                 {
                     var match = REG_FORMAT().Match(line);
@@ -165,6 +180,11 @@ public QueryLocalChanges(string repo, bool includeUntracked = true, bool noOptio
                     if (change.Index != Models.ChangeState.None || change.WorkTree != Models.ChangeState.None)
                         outs.Add(change);
                 }
+
+                lock (capturedLock)
+                {
+                    captured.Process = null;
+                }
             }
             catch
             {
@@ -173,5 +193,10 @@ public QueryLocalChanges(string repo, bool includeUntracked = true, bool noOptio
 
             return outs;
         }
+
+        private class CapturedProcess
+        {
+            public Process Process { get; set; } = null;
+        }
     }
 }

src/ViewModels/Repository.cs

@@ -1330,6 +1330,7 @@ public void RefreshWorkingCopyChanges()
             Task.Run(async () =>
             {
                 var changes = await new Commands.QueryLocalChanges(FullPath, _uiStates.IncludeUntrackedInLocalChanges, noOptionalLocks)
+                    .WithCancellation(token)
                     .GetResultAsync()
                     .ConfigureAwait(false);