xref: /gem5/src/systemc/tests/systemc/kernel/sc_time/test18/test18.cpp

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

  test18.cpp -- Test that time cannot go backwards in simulator

  Original Author: Andy Goodrich, Forte Design Systems, 2006-05-03

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

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

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

      Name, Affiliation, Date:
  Description of Modification:

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

// $Log: test18.cpp,v $
// Revision 1.1.1.1  2006/12/15 20:26:06  acg
// systemc_tests-2.3
//
// Revision 1.1  2006/05/03 19:37:10  acg
//  Andy Goodrich: new test to check that time will not run backward if a
//  negative value is given to sc_event::notify()
//

#include "systemc.h"

SC_MODULE(DUT)
{
	SC_CTOR(DUT)
	{
		SC_METHOD(catcher);
		sensitive << m_event;
		dont_initialize();
		SC_CTHREAD(thrower,m_clk.pos());
	}
	void catcher()
	{
		cout << sc_time_stamp() << " caught" << endl;
	}
	void thrower()
	{
		sc_time minus_four(-4.0, SC_NS);
		wait(7);
		for (;;)
		{
			wait();
			cout << sc_time_stamp() << " throwing" << endl;
			m_event.notify(minus_four);
		}
	}
	sc_in<bool> m_clk;
	sc_event    m_event;
};

int sc_main(int argc, char* argv[])
{
	sc_clock        clock;
	DUT             dut("dut");

	dut.m_clk(clock);

	sc_start(11, SC_NS);

	cout << "Program completed" << endl;
	return 0;
}