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体验新版 GitCode,发现更多精彩内容 >>
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f9756dd4
编写于
6月 04, 2020
作者:
J
Jason Malinowski
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差异文件
Clarify comment around behavior in Dispose() and why it's not taking locks
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+9
-3
src/VisualStudio/Core/Def/Implementation/ProjectSystem/FileChangeWatcher.cs
...ore/Def/Implementation/ProjectSystem/FileChangeWatcher.cs
+9
-3
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src/VisualStudio/Core/Def/Implementation/ProjectSystem/FileChangeWatcher.cs
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@@ -217,14 +217,20 @@ public void Dispose()
_fileChangeWatcher
.
EnqueueWork
(
async
service
=>
{
// Since we put all of our work in a queue, we know that if we had tried to advise file or directory changes,
// it must have happened before now
// This cleanup code all runs in the single queue that we push usages of the file change service into.
// Therefore, we know that any advise operations we had done have ran in that queue by now. Since this is also
// running after dispose, we don't need to take any locks at this point, since we're taking the general policy
// that any use of the type after it's been disposed is simply undefined behavior.
// We don't use IAsyncDisposable here simply because we don't ever want to block on the queue if we're
// able to avoid it, since that would potentially cause a stall or UI delay on shutting down.
foreach
(
var
cookie
in
_directoryWatchCookies
)
{
await
service
.
UnadviseDirChangeAsync
(
cookie
).
ConfigureAwait
(
false
);
}
// Since this runs after dispos
ed. so
no lock is needed for _activeFileWatchingTokens
// Since this runs after dispos
al,
no lock is needed for _activeFileWatchingTokens
foreach
(
var
token
in
_activeFileWatchingTokens
)
{
await
UnsubscribeFileChangeEventsAsync
(
service
,
token
).
ConfigureAwait
(
false
);
...
...
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