Coroutines: C++ vs Rust
summary
Compares C++ coroutines using a user-defined promise type and std::coroutine_handle (compiler allocates a heap state by default, with optional elision) against Rust’s compiler-generated Future trait types driven by a waker and executor. Shows a working timer awaitable in C++ that resumes the innermost coroutine bottom‑up, contrasts Rust’s top‑down poll/wake model, explains pinning vs implicit heap allocation, and demonstrates the tail‑call / double‑destroy bugs and how continuations and final_suspend handle them.
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chapters (11)
- 0:00Start
- 4:42Main Loop
- 10:52Protein Handle
- 14:20User Interface
- 20:42Compiler Transformation
- 24:47Recap
- 27:14Variables and Resumers
- 51:49Common Operations
- 53:23Obligatory Socket Example
- 55:51Curtin Allocation
- 56:35Stackful Proteins
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