get pending signals
() function returns a mask of the signals
pending for delivery to the calling process in the location indicated by
. Signals may be pending because they are currently
masked, or transiently before delivery (although the latter case is not
Upon successful completion, the value 0 is returned; otherwise the
value -1 is returned and the global variable
errno is set to indicate the error.
sigpending() function does not currently detect any
sigpending() function is defined by
IEEE Std 1003.1-2008 (“POSIX.1”).