pub fn co_running(state: &mut LuaState) -> Result<usize, LuaError>Expand description
coroutine.running() — return the current coroutine plus a boolean.
push_thread pushes the current LuaState as a thread value and returns
true iff it is the main thread.
The return arity is version-gated (pinned by running_in_*_arity_by_version
in tests/coro_strengthen.rs). From 5.2 the result is (thread, ismain)
where ismain is true for the main thread. Lua 5.1 has no ismain
boolean: it returns nil in the main coroutine and only the running thread
(one value) inside a coroutine (verified against lua5.1.5; see
specs/followup/5.1-roster-syntax.md §1).