xref: /gem5/src/systemc/tests/systemc/misc/user_guide/newsched/test7/test7.cpp

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

  test7.cpp --

  Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15

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

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

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

      Name, Affiliation, Date:
  Description of Modification:

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

/*
  Corner case testing for new scheduler.
  Case 5: Checking multiple clock transitions at the same time
  */

#include "systemc.h"

SC_MODULE( triga )
{
  SC_HAS_PROCESS( triga );

  sc_in<bool> clock;
  sc_signal<int>& out;

  int i;

  triga(sc_module_name NAME,
	sc_signal_in_if<bool>& CLOCK,
	sc_signal<int>& OUT_)
    : out(OUT_)
  {
    clock(CLOCK);
    SC_METHOD( entry );
    sensitive << clock;
    i = 0;
    out = i++;
  }

  void entry()
  {
    out = i++;
  }
};

SC_MODULE( watcher )
{
  SC_HAS_PROCESS( watcher );

  sc_in<bool> clock1;
  sc_in<bool> clock2;
  const sc_signal<int>& in1;
  const sc_signal<int>& in2;
  const sc_signal<int>& in3;
  const sc_signal<int>& in4;

  watcher(sc_module_name NAME,
	  sc_signal_in_if<bool>& CLOCK1,
	  sc_signal_in_if<bool>& CLOCK2,
	  const sc_signal<int>& IN1,
	  const sc_signal<int>& IN2,
	  const sc_signal<int>& IN3,
	  const sc_signal<int>& IN4)
    : in1(IN1), in2(IN2), in3(IN3), in4(IN4)
  {
    clock1(CLOCK1);
    clock2(CLOCK2);
    SC_METHOD( entry );
    sensitive << clock1 << clock2;
    sensitive << in1 << in2 << in3 << in4;
  }

  void entry()
  {
    cout << "[ ";
    if (clock1.posedge()) cout << "Posedge(1) - ";
    if (clock1.negedge()) cout << "Negedge(1) - ";
    if (clock2.posedge()) cout << "Posedge(2) - ";
    if (clock2.negedge()) cout << "Negedge(2) - ";
    if (in1.event()) cout << "Sync1 Out = " << in1.read() << " - ";
    if (in2.event()) cout << "ASync1 Out = " << in2.read() << " - ";
    if (in3.event()) cout << "Sync2 Out = " << in3.read() << " - ";
    if (in4.event()) cout << "ASync2 Out = " << in4.read() << " - ";
    cout << "]" << endl;
  }
};


SC_MODULE( trigp )
{
  SC_HAS_PROCESS( trigp );

  sc_in<bool> clk;

  sc_signal<int>& out;

  trigp(sc_module_name NAME,
	sc_signal_in_if<bool>& CLK,
	sc_signal<int>& OUT_)
    : out(OUT_)
  {
    clk(CLK);
    SC_CTHREAD( entry, clk.pos() );
    out = 0;
  }

  void entry()
  {
    int i = 11;
    while (true) {
      out = i++;
      wait();
    }
  }
};

int
sc_main(int ac, char *av[])
{
  sc_clock clock1("Clock1", 20, SC_NS, 0.5);
  sc_clock clock2("Clock2", 40, SC_NS, 0.5);

  sc_signal<int> sig1, sig2, sig3, sig4;

  triga T1("T1", clock1, sig2);
  triga T2("T2", clock2, sig4);
  trigp T3("T3", clock1, sig1);
  trigp T4("T4", clock2, sig3);
  watcher W("W", clock1, clock2, sig1, sig2, sig3, sig4);

  sc_trace_file *tf = sc_create_vcd_trace_file("systemc");
  sc_trace(tf, clock1, "Clock1");
  sc_trace(tf, clock2, "Clock2");
  sc_trace(tf, sig1, "Sync1");
  sc_trace(tf, sig2, "Async1");
  sc_trace(tf, sig3, "Sync2");
  sc_trace(tf, sig4, "Async2");

  sc_start(100, SC_NS);
  return 0;
}