sigemptyset, sigfillset, sigaddset, sigdelset, sigismember: Operace sady signálů POSIX.

Originální popis anglicky: sigemptyset, sigfillset, sigaddset, sigdelset, sigismember - POSIX signal set operations.

Návod, kniha: Linux Programmer's Manual

STRUČNĚ

#include <signal.h> int sigemptyset(sigset_t *set); int sigfillset(sigset_t *set); int sigaddset(sigset_t *set, int signum); int sigdelset(sigset_t *set, int signum); int sigismember(const sigset_t *set, int signum);

POPIS / INSTRUKCE

The sigsetops(3) functions allow the manipulation of POSIX signal sets. sigemptyset initializes the signal set given by set to empty, with all signals excluded from the set. sigfillset initializes set to full, including all signals. sigaddset and sigdelset add and delete respectively signal signum from set. sigismember tests whether signum is a member of set.

NÁVRATOVÁ HODNOTA

sigemptyset, sigfillset, sigaddset and sigdelset return 0 on success and -1 on error. sigismember returns 1 if signum is a member of set, 0 if signum is not a member, and -1 on error.

CHYBY / ERRORY

EINVAL

sig is not a valid signal.

ODPOVÍDAJÍCÍ

POSIX

SOUVISEJÍCÍ

sigaction(2), sigpending(2), sigprocmask(2), sigsuspend(2)