Add polyfills for Stream.DisposeAsync(), TextReader.DisposeAsync(...), TextWriter.DisposeAsync(...)
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….)`, `TextWriter.DisposeAsync(...)`
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Pull request overview
This PR adds polyfills for the DisposeAsync() method to Stream, TextReader, and TextWriter classes, enabling asynchronous disposal for platforms that don't natively support these methods (pre-.NET Core 3.0). The implementations check for native IAsyncDisposable support when available and fall back to wrapping synchronous Dispose() calls in Task.Run().
Key changes:
- Added
DisposeAsync()polyfill implementations for Stream, TextReader, and TextWriter classes - Updated documentation to reflect the addition of 4 new member signatures (3 DisposeAsync methods + Task.Yield)
- Applied appropriate conditional compilation directives to target platforms lacking native support
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 5 comments.
| File | Description |
|---|---|
| PolyShim/Signatures.md | Updated signature counts and added documentation entries for new DisposeAsync() methods and Task.Yield() |
| PolyShim/NetCore30/Stream.cs | Implemented DisposeAsync() polyfill for Stream with fallback logic |
| PolyShim/NetCore30/TextReader.cs | Implemented DisposeAsync() polyfill for TextReader with fallback logic |
| PolyShim/NetCore30/TextWriter.cs | Implemented DisposeAsync() polyfill for TextWriter with fallback logic |
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Tyrrrz
changed the title
Stream.DiposeAsync(), TextReader.DisposeAsync(...), TextWriter.DisposeAsync(...)Stream.DisposeAsync(), TextReader.DisposeAsync(...), TextWriter.DisposeAsync(...)
This was referenced Jan 1, 2026
This was referenced Feb 1, 2026
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