Signal Handing Functions

Functions
nothing	Qore::remove_signal_handler (softint signal)
	Removes a signal handler and returns the signal handling state to the default.
nothing	Qore::set_signal_handler (softint signal, code f)
	Sets or replaces a signal handler according to the signal number and closure or call reference (function or object method reference) passed.

Detailed Description

Signal handing functions

Function Documentation

remove_signal_handler()

nothing Qore::remove_signal_handler

(

softint

signal

)

Removes a signal handler and returns the signal handling state to the default.

Platform Availability:

Qore::Option::HAVE_SIGNAL_HANDLING

Restrictions:

Qore::PO_NO_PROCESS_CONTROL

By the time this function returns, changes to the signal handling thread have already been effected.

Parameters

signal

The signal number to process, see Signal Constants for possible values

Example:

remove_signal_handler(SIGINT);

See also

Signal Handling for more information

set_signal_handler()

nothing Qore::set_signal_handler	(	softint	signal,
		code	f
	)

Sets or replaces a signal handler according to the signal number and closure or call reference (function or object method reference) passed.

Platform Availability:

Qore::Option::HAVE_SIGNAL_HANDLING

Restrictions:

Qore::PO_NO_PROCESS_CONTROL

By the time this function returns, changes to the signal handling thread have already been effected.

When a signal is raised and the signal handler code is called, the signal number is passed as an integer argument to the signal handling code.

Parameters

signal	The signal number to process, see Signal Constants for possible values
f	The code to execute when the signal is caught; this should accept an integer argument giving the signal number

Example:

set_signal_handler(SIGINT, \signal_handler());

See also

Signal Handling for more information