The xtrigger example in the documentation includes a line like
@clock_0 & @upstream => FAM:succeed-all => blam
i.e. wait until a clock trigger and until an upstream task is completed. Does the logic for xtrigger evaluation follow any C-style short-circuiting rules (i.e. test the clock, and if true, then test upstream to evaluate the AND condition)? Or, in this case, would the upstream task be polled at the same interval as the clock?