sigemptyset, sigfillset, sigaddset, sigdelset, sigismember -- manipulate
signal sets
Standard C Library (libc, -lc)
#include <signal.h>
int
sigemptyset(sigset_t *set);
int
sigfillset(sigset_t *set);
int
sigaddset(sigset_t *set, int signo);
int
sigdelset(sigset_t *set, int signo);
int
sigismember(const sigset_t *set, int signo);
These functions manipulate signal sets stored in a sigset_t. Either
sigemptyset() or sigfillset() must be called for every object of type
sigset_t before any other use of the object.
The sigemptyset() function initializes a signal set to be empty.
The sigfillset() function initializes a signal set to contain all signals.
The sigaddset() function adds the specified signal signo to the signal
set.
The sigdelset() function deletes the specified signal signo from the signal
set.
The sigismember() function returns whether a specified signal signo is
contained in the signal set.
These functions are provided as macros in the include file <signal.h>.
Actual functions are available if their names are undefined (with #undef
name).
The sigismember() function returns 1 if the signal is a member of the
set, 0 otherwise. The other functions return 0.
Currently no errors are detected.
kill(2), sigaction(2), sigpending(2), sigprocmask(2), sigsuspend(2)
These functions are defined by IEEE Std 1003.1-1988 (``POSIX.1'').
FreeBSD 5.2.1 June 4, 1993 FreeBSD 5.2.1 [ Back ] |