Function pthread_coro_thread_main

src/platforms/wasm/coroutine_platform_wasm.hpp:112–132

Thread body. Each non-runner context owns one of these. Park until first signal, then run the entry trampoline. The trampoline itself never returns (CoroutineContext::entry_trampoline busy-loops if it falls through), so the *only* way this function returns is via the initial-wait exit branch below. Mid-coroutine teardown is handled by contextSwitch() calling pthread_exit() — the thread terminates

/// contextSwitch() calling pthread_exit() — the thread terminates without
/// returning here.
inline void pthread_coro_thread_main(PthreadCoroCtx* self) FL_NOEXCEPT {
    {
        fl::unique_lock<fl::mutex> lk(self->mutex);
        self->cv.wait(lk, [self] { return self->signaled; });
        self->signaled = false;
        if (self->exit_requested) {
            // Initial-wait exit — destroyContext() called before the
            // coroutine ever ran. Drop the lock and exit cleanly so
            // destroyContext()'s join() can return.
            return;
        }
    }

    if (self->entry_fn) {
        self->entry_fn();
    }
    // Unreachable: entry_fn (CoroutineContext::entry_trampoline) busy-loops
    // on its own after the final contextSwitch back to the runner.
    // Mid-coroutine teardown exits the thread via pthread_exit() inside
    // contextSwitch(), so control never returns here from entry_fn().
}

class CoroutinePlatformPthread : public ICoroutinePlatform {
public: