InquireSignal function

In unit sysutils

Check whether a signal handler is set (unix only).

Declaration

pascal

function InquireSignal(RtlSigNum: Integer): TSignalState

Description

RtlSigNum will check whether the signal RtlSigNum is being handled, and by whom. It returns a TSignalState result to report the state of the signal, which can be one of the following values:

ssNotHooked: No signal handler is set for the signal.
ssHooked: A signal handler is set by the RTL code for the signal.
ssOverridden: A signal handler was set for the signal by third-party code.

This routine works by resetting the signal handlers, so it is risky to call.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.