From e731642149c50955efb63b3f255a5112185976dd Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Mon, 27 Aug 2018 23:18:18 -0700 Subject: systemc: Clamp the time of events to the present. If systemc attempts to schedule an event in the past, schedule it for right now instead. Still preserve the difference between delta and timed events. This scheme doesn't really make a lot of sense (why not just disallow scheduling events in the past?) but this will approximate what I think the correct behavior is. What's probably supposed to happen is that events in the past are executed from most past to most present until they catch up with now, and then now advances as normal. Our approach is simpler, but won't preserve ordering between multiple events scheduled in the past. Change-Id: I73c1e581c532530178458f044674613a4f4ea3be Reviewed-on: https://gem5-review.googlesource.com/c/12277 Reviewed-by: Gabe Black Maintainer: Gabe Black --- src/systemc/core/scheduler.hh | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/systemc/core/scheduler.hh b/src/systemc/core/scheduler.hh index ff8434bef..2da8da470 100644 --- a/src/systemc/core/scheduler.hh +++ b/src/systemc/core/scheduler.hh @@ -215,6 +215,9 @@ class Scheduler schedule(ScEvent *event, const ::sc_core::sc_time &delay) { Tick tick = delayed(delay); + if (tick < getCurTick()) + tick = getCurTick(); + event->schedule(tick); // Delta notification/timeout. -- cgit v1.2.3