module Expert:sig..end
Expert module contains functions that novice users should avoid, due to their
complexity.
An OCaml signal handler can run at any time, which introduces all the semantic
complexities of multithreading. It is much easier to use async signal handling, see
Async_unix.Signal, which does not involve multithreading, and runs user code as
ordinary async jobs. Also, beware that there can only be a single OCaml signal
handler for any signal, so handling a signal with a Core signal handler will
interfere if async is attempting to handle the same signal.
If you do use Core signal handlers, you should strive to make the signal handler
perform a simple idempotent action, like setting a ref.
typebehavior =[ `Default | `Handle of Signal.t -> unit | `Ignore ]
val signal : Signal.t -> behavior -> behaviorsignal t sets the behavior of the system on receipt of signal t and returns the
behavior previously associated with t. If t is not available on your system,
signal raises.val set : Signal.t -> behavior -> unitset t b is ignore (signal t b)val handle : Signal.t -> (Signal.t -> unit) -> unithandle t f is set t (`Handle f).