| 407 | {} |
| 408 | |
| 409 | auto try_wakeup() noexcept -> std::error_code |
| 410 | { |
| 411 | std::uint64_t __wakeup = 1; |
| 412 | if (::write(__eventfd_, &__wakeup, sizeof(__wakeup)) == -1) |
| 413 | { |
| 414 | return {errno, std::system_category()}; |
| 415 | } |
| 416 | return {}; |
| 417 | } |
| 418 | |
| 419 | void wakeup() |
| 420 | { |