# PXFSIGEMPTYSET (L*X, M*X)

POSIX Subroutine: Empties a signal set.

## Module

USE IFPOSIX

CALL PXFSIGEMPTYSET (jsigset,ierror)

jsigset | (Input) INTEGER(4). A handle of structure `sigset`. This is the set to empty.
ierror | (Output) INTEGER(4). The error status.

If successful, ierror is set to zero; otherwise, nonzero.

The PXFSIGEMPTYSET subroutine initializes the signal set associated with handle jsigset to empty; all signals are excluded from the set. This set of signals is used by PXFSIGACTION as field sa_mask in structure `sigaction`. It defines the set of signals that will be blocked during execution of the signal handler function (the field sa_handler in structure `sigaction`).

On Windows* systems, PXFSIGACTION ignores the field sa_mask in structure `sigaction`.

### Note

To get a handle for an instance of the `sigset` structure, use PXFSTRUCTCREATE with the string 'sigset' for the structure name.

Parent topic: POSIX* Library Routines

## See Also

PXFSTRUCTCREATE
PXFSIGFILLSET
PXFSIGACTION