src/systemc/tests/systemc/kernel/sc_event/test15/event_triggered.cpp

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  with this work for additional information regarding copyright ownership.
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/*****************************************************************************

  event_triggered.cpp -- test sc_event::triggered

  Original Author: Philipp A. Hartmann, Intel Corporation - 2017-08-06

 *****************************************************************************/

/*****************************************************************************

  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
  changes you are making here.

      Name, Affiliation, Date:
  Description of Modification:

 *****************************************************************************/

#define SC_INCLUDE_DYNAMIC_PROCESSES
#include <systemc>
#include <iomanip>

#ifdef BENCHMARK
  static const sc_dt::uint64 num_events     = 128;
  static const sc_dt::uint64 num_triggers   = 4;
  static const sc_dt::uint64 num_iterations = 10000000;
# define CHECK(expr) ((void)0)
#else
  static const sc_dt::uint64 num_events     = 16;
  static const sc_dt::uint64 num_triggers   = 4;
  static const sc_dt::uint64 num_iterations = 4;
# define CHECK(expr) sc_assert(expr)
#endif

#ifndef UINT64_C
#if defined(_WIN32) && !defined(__MINGW32__)
# define UINT64_C(v) v ## ui64
#else
# define UINT64_C(v) v ## ULL
#endif
#endif // UINT64_C

using namespace sc_core;

SC_MODULE( module )
{
  sc_vector<sc_event> events;
  sc_event            event_return;

  SC_CTOR( module )
    : events("ev", num_events)
    , m_rng_state()
  {
    SC_THREAD(driver);

    SC_THREAD(consumer_dynamic);
    SC_THREAD(consumer_static); // odd events only
      for(unsigned i = 1; i<events.size(); i+=2)
        sensitive << events[i];
  }
private:

  void driver()
  {
    CHECK( !event_return.triggered() );
    wait(1, SC_NS);
    CHECK( !event_return.triggered() );

    random_notify();
    random_notify();
    wait(event_return);

    random_notify(SC_ZERO_TIME);
    random_notify(SC_ZERO_TIME);
    wait(event_return);

    random_notify(sc_time(1, SC_NS));
    random_notify(sc_time(1, SC_NS));
    wait(event_return);
    wait(2, SC_NS);
    CHECK( !event_return.triggered() );

    for(unsigned i = 0; i < num_triggers; ++i)
      random_notify();
    wait(event_return);
    CHECK( event_return.triggered() );

    for(unsigned i = 0; i < num_triggers; ++i)
      random_notify(SC_ZERO_TIME);
    wait(event_return);
    CHECK( event_return.triggered() );

    for(unsigned iter = 0; iter < num_iterations; ++iter) {
      for(unsigned i = 0; i < num_triggers; ++i) {
        random_notify(sc_time(1, SC_NS));
      }
      wait(event_return);
    }
    CHECK( event_return.triggered() );
  }

  void consumer_dynamic()
  {
    sc_event_or_list events_or; // even events only
    for(unsigned i = 0; i < events.size(); i+=2)
      events_or |= events[i];

    while(true) {
      wait(events_or);
      print_triggered();
      event_return.notify();
    }
  }

  void consumer_static()
  {
    while(true) {
      wait();
      print_triggered();
      event_return.notify();
    }
  }

  void print_triggered()
  {
#ifndef BENCHMARK
    using namespace std;
    cout
      << setw(6) << sc_time_stamp()
      << " (" << sc_delta_count() << "): "
      << sc_get_current_process_handle().name() << ": ";
    for(unsigned i =0; i< events.size(); ++i)
      if (events[i].triggered())
        std::cout << events[i].basename() << " ";
    cout << endl;
#endif
  }

  void random_notify()
    { random_notify(SC_ZERO_TIME, true); }

  void random_notify(const sc_time& t, bool immediate = false)
  {
    sc_event& ev = events[ lcg_rng() % num_events ];
#ifndef BENCHMARK
    using namespace std;
    cout
      << setw(6) << sc_time_stamp()
      << " (" << sc_delta_count() << "): "
      << sc_get_current_process_handle().name() << ": "
      << ev.basename();
    if (immediate) {
      cout << ".notify()";
    } else {
      cout << ".notify(" << t << ")";
    }
    cout << endl;
#endif
    if (immediate) {
      ev.notify();
    } else {
      ev.notify(t);
    }
  }

  unsigned lcg_rng()
  {
    m_rng_state = UINT64_C(2862933555777941757) * m_rng_state
                + UINT64_C(3037000493);
    return ( m_rng_state >> 48 );
  }

  sc_dt::uint64 m_rng_state;
};


int
sc_main( int, char*[] )
{
    module m("m");
    sc_start();
    sc_stop();
    return 0;
}