NAME

     sigpending — get pending signals

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <signal.h>

     int
     sigpending(sigset_t *set);

DESCRIPTION

     The sigpending() system call returns a mask of the signals pending for delivery to the
     calling thread or the calling process in the location indicated by set.  Signals may be
     pending because they are currently masked, or transiently before delivery (although the
     latter case is not normally detectable).

RETURN VALUES

     The sigpending() function returns the value 0 if successful; otherwise the value -1 is
     returned and the global variable errno is set to indicate the error.

ERRORS

     The sigpending() system call will fail if:

     [EFAULT]           The set argument specified an invalid address.

SEE ALSO

     sigaction(2), sigprocmask(2), sigsuspend(2), sigsetops(3)

STANDARDS

     The sigpending() system call is expected to conform to ISO/IEC 9945-1:1990 (“POSIX.1”).