sigpending(2)                                             sigpending(2)

  sigpending()

  NAME

    sigpending() - get pending signals

  SYNOPSIS

    #include 

    int sigpending(sigset_t *set)

  DESCRIPTION

    The sigpending(2) function returns a mask of the signals pending for
    delivery to 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

    A 0 value indicated that the call succeeded. A -1 return value indicates
    an error occurred and errno is set to indicated the reason.

  ERRORS

    The sigpending(2) function detects the following error:

    [EFAULT]
        The value of set is an invalid pointer.

  SEE ALSO

    sigaction(2)

    sigprocmask(2)

  USAGE NOTES

    The sigpending function is thread safe.

    The sigpending function is async-signal safe.