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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 14.0-RELEASE-p11 September 6, 2013 FreeBSD 14.0-RELEASE-p11