добавить сигнал в набор сигналов (add a signal to a signal set)
Пролог (Prolog)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
Имя (Name)
sigaddset — add a signal to a signal set
Синопсис (Synopsis)
#include <signal.h>
int sigaddset(sigset_t *set, int signo);
Описание (Description)
The sigaddset() function adds the individual signal specified by
the signo to the signal set pointed to by set.
Applications shall call either sigemptyset() or sigfillset() at
least once for each object of type sigset_t prior to any other
use of that object. If such an object is not initialized in this
way, but is nonetheless supplied as an argument to any of
pthread_sigmask(), sigaction(), sigaddset(), sigdelset(),
sigismember(), sigpending(), sigprocmask(), sigsuspend(),
sigtimedwait(), sigwait(), or sigwaitinfo(), the results are
undefined.
Возвращаемое значение (Return value)
Upon successful completion, sigaddset() shall return 0;
otherwise, it shall return -1 and set errno to indicate the
error.
Ошибки (Error)
The sigaddset() function may fail if:
EINVAL The value of the signo argument is an invalid or
unsupported signal number.
The following sections are informative.
Примеры (Examples)
None.
Использование в приложениях (Application usage)
None.
Обоснование (Rationale)
None.
Будущие направления (Future directions)
None.
Смотри также (See also)
Section 2.4, Signal Concepts, pthread_sigmask(3p), sigaction(3p),
sigdelset(3p), sigemptyset(3p), sigfillset(3p), sigismember(3p),
sigpending(3p), sigsuspend(3p)
The Base Definitions volume of POSIX.1‐2017, signal.h(0p)
