Systemverilog/event.triggered

1. event.triggered will only maintain a time_slot, the next time_slot will lose this flag, if it is not guaranteed in every Time_slot will detect this flag, then will lose this flag.

2. It is important to ensure that the triggered is detected at the same or earlier time_slot of->event.

3.virtual task Wait_trigger (); if it occurs with->event in the same time_slot, it may be lost triggered
num_waiters++;
@m_event;
Endtask

4. Virtual task Wait_ptrigger (); if it occurs with->event in the same time_slot, it will not be lost triggered
if (m_event.triggered)
Return
num_waiters++;
@m_event;
Endtask

5. The issue of appeals is mainly due to->event, @event are in the Reactiveset area and cannot guarantee that->event occur before @event, but only through triggered, but triggered to the next time_ The slot is lost.

Systemverilog/event.triggered