SIGPENDING(2)             FreeBSD System Calls Manual            SIGPENDING(2)

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 IEEE Std
     1003.1-1990 ("POSIX.1").

FreeBSD 13.1-RELEASE-p6        September 6, 2013       FreeBSD 13.1-RELEASE-p6