[5.5] [Concurrency] Add "async" operation for continuing work asynchronously. #37020
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This new attribute can be used on parameters of `@Sendable async` type to indicate that the closures arguments passed to such parameters should inherit the actor context where they are formed, which is not the normal behavior for `@Sendable` closures. Another part of rdar://76927008. (cherry picked from commit b9f1e7f)
(cherry picked from commit 6928c3f)
The `async` operation is a global function that initiates asynchronous work on behalf of the synchronous code that calls it. Unlike `detach`, `async` inherits priority, actor context, and other aspects of the synchronous code that initiates it, making it a better "default" operation for creating asynchronous work than `detach`. The `detach` operation is still important for creating truly detached tasks that can later be `await`'d or cancelled if needed. Implements the main entry point for rdar://76927008. (cherry picked from commit 3c3f216)
(cherry picked from commit fbc6237)
(cherry picked from commit 181ffaf)
Add a feature for this new attribute, and make sure we use the feature guard for functions that use it, e.g., the new `async`. Finishes rdar://76927008. (cherry picked from commit cdd6ad8)
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@swift-ci please test |
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Build failed |
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@swift-ci please test macOS |
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The
asyncoperation is a global function that initiates asynchronouswork on behalf of the synchronous code that calls it. Unlike
detach,asyncinherits priority, actor context, and other aspects of thesynchronous code that initiates it, making it a better "default"
operation for creating asynchronous work than
detach. Thedetachoperation is still important for creating truly detached tasks that
can later be
await'd or cancelled if needed.Implements rdar://76927008.