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import getLogger from "@cocalc/backend/logger";
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const logger = getLogger("process-kill");
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// sends kill 2,3,9 signal to pid.
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// never raises an exception.
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export default function processKill(pid: number, signal: 2 | 3 | 9) {
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  let s;
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  switch (signal) {
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    case 2:
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      s = "SIGINT";
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      break;
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    case 3:
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      s = "SIGQUIT";
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      break;
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    case 9:
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      s = "SIGKILL";
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      break;
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    default:
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      logger.debug(
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        "WARNING -- process_kill: only signals 2 (SIGINT), 3 (SIGQUIT), and 9 (SIGKILL) are supported"
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      );
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      return;
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  }
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  try {
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    logger.debug("process.kill -- pid=", pid, " signal=", signal);
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    process.kill(pid, s);
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  } catch (_err) {}
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}
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// it's normal to get an exception when sending a signal... to a process that doesn't exist.
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