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STACKFUL COROUTINE IN RUST ANOTHER ASYNC STORY
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Stackful Coroutine-Based Asynchronous Programming in Rust - RustCon Asia 2019
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- 1 STACKFUL COROUTINE IN RUST ANOTHER ASYNC STORY
- 2 STACKFUL GENERATOR KEY FEATURES • detect current context type • Bend and yield with parameters
- 3 STACKFUL COROUTINE • coroutine is a special thread (user space / light) • scheduler running on multi-thread semantic blocking is not real blocking call API without directly yield keep the same interf…
- 4 DIFFERENCE WITH GENERATOR • coroutine is a special penerator • stackful coroutine can yield from any point directly to scheduler - always yield a "kernel request" when resume the scheduler send back …
- 5 SYNC PRIMITIVE SUB SYSTEM • yield blocker kernel request • save the suspending coroutines within primitive internal queue - scheduling the coroutines on normal scheduler with work stealing support Se…
- 6 THE BLOCKER all sync primitives are implemented based on blocker • the blocker could return Timeout/Canceled/Ok - the blocker support running in thread context
- 7 COROUTINE CANCELLATION • we tripper a special panic when detect cancel • the cancel panic would be caught and we have chance to mark the coroutine as cancelled • can only detect cancel when switch fr…
