Token.invalid with errno set.EventLoop.registerSignal
Register a signal watcher.
On Windows, signals are limited to console control events via SetConsoleCtrlHandler. Only Signal.INTERRUPT (Ctrl+C) and Signal.TERMINATE (Ctrl+Break / close window) are supported. POSIX-only signals such as HANGUP, CHILD, USER1, USER2, and WINCH have no Windows equivalent and will fail with EINVAL.
Parameters
signal | Normalized signal to observe. |
callback | Callback invoked for each delivered signal record. |
Returns
New watcher token on success, or