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signal action constants

The action taken when the interrupt signal is received depends on the value of func.

Syntax

#include <signal.h>

Remarks

The func argument must be either a function address or one of the manifest constants listed below and defined in SIGNAL.H.

Constant Description
SIG_DFL Uses system-default response. If the calling program uses stream I/O, buffers created by the run-time library aren't flushed.
SIG_IGN Ignores interrupt signal. This value should never be given for SIGFPE, since the floating-point state of the process is left undefined.
SIG_GET Returns the current value of the signal.
SIG_SGE Indicates an error occurred in the signal.
SIG_ACK Indicates an acknowledgment was received.
SIG_ERR A return type from a signal indicating an error has occurred.

See also

signal
Global constants