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Found 3 results

  1. Hi, I have two threads, one thread (thread2) waits on event 'e' and other thread (thread1) notifies event 'e' at different time instances. Please find the below code, void thread1() { for(int i=0;i!=3;i++) { wait(5,SC_NS); e.notify(0,SC_NS); e.notify(3,SC_NS); e.notify(); e.notify(3,SC_NS); e.notify(4,SC_NS); std::cout<<"I am called @ "<<sc_time_stamp()<<endl; } } void thread2() { static int i=1; while(1) { wait(e); std::cout<<"e"<<i++<<" @ "<<sc_time_stamp()<<std::endl; } } As per LRM 5.10.8, I would expect the following output, I am called @ 5 ns e1 @ 5 ns I am called @ 10 ns e2 @ 10 ns I am called @ 15 ns e3 @ 15 ns But, the actual output you get when you run is, I am called @ 5 ns e1 @ 5 ns e2 @ 8 ns I am called @ 10 ns e3 @ 10 ns e4 @ 13 ns I am called @ 15 ns e5 @ 15 ns e6 @ 18 ns This appeared bit strange to me and was just curious to know of what caused this behavior. Interestingly, this happens only when you position immediate notification in the middle of series of same event notifications. But, if you place the immediate notification at the very end, then the behavior is as per the expected output above. To add, event "e2" was triggered at 8 ns because we have e.notify(3,SC_NS) and e.notify(4,SC_NS) after immediate notify and the earliest time i.e e.notify(3,SC_NS) survived. Had there been e.notify(1,SC_NS), it prints "e2 @ 6ns" and so on. Appreciate any help. Thanks.
  2. Hi all, is there any way to implement the intra assignment delay in systemC without using sc_event()? for example : in verilog we write out = #10 in1 + in2; // intra assignment delay. how would i implement the same in systemC? regards, jatin
  3. Hallo, I have a SC_THREAD which has a dynamic synchronization. I use a sc_event_or_list as the wait-function argument. void notifyForGeneratedOutPix(void) { using namespace std; while (true) { sc_core::wait( m_outPixEvOrList ); //I'd like to do something like this: for(auto event : m_outPixEvOrList) { if(event.isNotified()) { cout << "@ " << setw(5) << sc_core::sc_time_stamp(); cout << " | delta cycle: " << setw(5) << sc_core::sc_delta_count(); cout << "Written values from "; this->dump(cout); cout << endl; cout << "value: "; dumpOutPixel(event); //map access with event as key } else continue; } } The events synchronize a method where I need to know which event is notified and has resumed the thread process. I haven't found a method or function to check an event if it is notified or not. The event class have this enumaration enum notify_t { NONE, DELTA, TIMED }; but I haven't found something to check that flag. Is their any way to find out if a event is notified or not? Thx *andre*
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