Pratik Mankawde 21149a81e3 feat: Add C++20 coroutine primitives: CoroTask, CoroTaskRunner, JobQueueAwaiter ...

Add C++20 std::coroutine based task primitives for the JobQueue:

- CoroTask<T>: A coroutine return type with RAII ownership semantics
  and symmetric transfer for efficient resumption.
- CoroTaskRunner: Manages coroutine lifecycle on the JobQueue with
  suspend/resume tracking, LocalValue preservation, and graceful
  shutdown support.
- JobQueueAwaiter: External awaiter combining yield+post atomically.
- yieldAndPost(): Inline awaiter workaround for GCC-12 codegen bug
  where external awaiters at multiple co_await points corrupt the
  coroutine state machine resume index.
- CoroTask_test: Comprehensive test suite covering task lifecycle,
  suspend/resume, shutdown, and value-returning coroutines.
- BoostToStdCoroutineSwitchPlan.md: Migration plan documentation.

2026-03-25 15:46:44 +00:00

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xrpl

feat: Add C++20 coroutine primitives: CoroTask, CoroTaskRunner, JobQueueAwaiter

2026-03-25 15:46:44 +00:00