killApp function

Future<KillResult> killApp(KillInput _)

Stops the running app process referenced by the session's PID file.

Returns KillSuccess on success, KillNoSession if no PID file is present, or KillFailed if the process refused to die after SIGKILL.

Implementation

Future<KillResult> killApp(KillInput _) async {
  final pid = readPid();
  if (pid == null) return const KillNoSession();

  // Kill the log collector first so it stops writing to the log file.
  _killLogCollector();

  if (!isProcessAlive(pid)) {
    cleanupTempFiles();
    return const KillSuccess();
  }

  // Send SIGTERM
  Process.killPid(pid, ProcessSignal.sigterm);

  // Wait for process to exit
  final stopwatch = Stopwatch()..start();
  while (stopwatch.elapsed.inSeconds < killTimeoutSeconds) {
    await Future<void>.delayed(const Duration(milliseconds: 500));
    if (!isProcessAlive(pid)) {
      cleanupTempFiles();
      return const KillSuccess();
    }
  }

  // Force kill if still alive
  try {
    Process.killPid(pid, ProcessSignal.sigkill);
  } catch (_) {
    // Process may have already exited
  }

  cleanupTempFiles();

  if (isProcessAlive(pid)) return const KillFailed();
  return const KillSuccess();
}