Parent topic: S

sigismember()

See if a given signal is in a given set

Synopsis:

#include <signal.h>

int sigismember( const sigset_t *set,
                 int signo );

Arguments:

set: A pointer to the sigset_t object that you want to check.
signo: The signal that you want to check for membership in the set. 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 sigismember() function tests if signo is in the set pointed to by set.

Returns:

1: The signo is in the set.
0: The signo isn't in the set.
-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