harn-stdlib 0.8.24

Embedded Harn standard library source catalog
Documentation 
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// std/signal — cooperative process interruption helpers.
/** Register a process interrupt handler. */
pub fn on_interrupt(handler, options = nil) {
  return __signal_on_interrupt(handler, options)
}

/** Remove an interrupt handler returned by `on_interrupt`. */
pub fn off_interrupt(handle) {
  return __signal_off_interrupt(handle)
}

/** Return true after the current VM observes an interrupt. */
pub fn interrupted() -> bool {
  return __signal_interrupted()
}

/** Run `body` with an interrupt handler that is always unregistered afterward. */
pub fn with_interrupt(handler, body, options = nil) {
  let registration = on_interrupt(handler, options)
  try {
    let result = body()
    off_interrupt(registration)
    return result
  } catch (e) {
    off_interrupt(registration)
    throw e
  }
}