Parent topic: S

sigaddset()

Add a signal to a set

Synopsis:

#include <signal.h>

int sigaddset( sigset_t *set, 
               int signo );

Arguments:

set: A pointer to the sigset_t object that you want to add the signal to.
signo: The signal that you want to add. For more information, see “POSIX and QNX Neutrino signals” in the documentation for SignalAction().

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The sigaddset() function adds signo to the set pointed to by set.

Returns:

0: Success.
-1: An error occurred (errno is set).

Errors:

EINVAL: The signal signo isn't valid.

Examples:

See sigemptyset().

Classification:

Safety:
Cancellation point	No
Interrupt handler	Yes
Signal handler	Yes
Thread	Yes

Parent topic: S