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/*****************************************************************************
Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
more contributor license agreements. See the NOTICE file distributed
with this work for additional information regarding copyright ownership.
Accellera licenses this file to you under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with the
License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied. See the License for the specific language governing
permissions and limitations under the License.
*****************************************************************************/
/*****************************************************************************
test15.cpp -- sc_writer_policy: check conflicts within an evaluation phase
Original Author: Philipp A. Hartmann, Intel, 2017-05-12
*****************************************************************************/
// see https://github.com/OSCI-WG/systemc/issues/222
#define SC_INCLUDE_DYNAMIC_PROCESSES
#include <systemc>
#include <iomanip>
#include <sstream>
using sc_core::SC_NS;
using sc_core::SC_ZERO_TIME;
SC_MODULE(dut)
{
static const int num_drivers = 4;
SC_CTOR(dut)
: sig("sig")
{
SC_THREAD(run);
for(int id=1; id <= num_drivers; ++id) {
// first and last driver write the same values
spawn_driver( id, (id-1) % (num_drivers-1) + 1 );
}
}
private:
void spawn_driver(int id, int value) {
sc_assert( id > 0 && id <= num_drivers );
sc_core::sc_spawn_options sp;
sp.set_sensitivity(&ev[id-1]);
sp.spawn_method();
sp.dont_initialize();
std::stringstream nm;
nm << "p" << id;
sc_spawn( sc_bind(&dut::driver, this, value), nm.str().c_str(), &sp );
}
void run() {
wait(1, SC_NS);
std::cout << "\n*** trigger each driver in individual delta cycles" << std::endl;
for(int id=1; id <= num_drivers; ++id) {
trigger(id);
wait(SC_ZERO_TIME);
log();
}
wait(1, SC_NS);
std::cout << "\n*** trigger 1-2-3 in the same delta cycle" << std::endl;
trigger(1);
trigger(2); // error expected
trigger(3); // error expected
wait(SC_ZERO_TIME);
log();
wait(1, SC_NS);
std::cout << "\n*** trigger 2-3-1 in the same delta cycle" << std::endl;
trigger(2);
trigger(3); // error expected
trigger(1); // error expected
wait(SC_ZERO_TIME);
log();
wait(1, SC_NS);
std::cout << "\n*** trigger 3-1-2 in the same delta cycle" << std::endl;
trigger(3);
trigger(1); // error expected
trigger(2); // error expected
wait(SC_ZERO_TIME);
log();
wait(1, SC_NS);
std::cout << "\n*** trigger 1-2-1-2 in the same delta cycle" << std::endl;
trigger(1);
trigger(2); // error expected
trigger(1); // NO error expected (original process)
trigger(2); // error expected
wait(SC_ZERO_TIME);
log();
wait(1, SC_NS);
std::cout << "\n*** trigger 2-1 in the same delta cycle" << std::endl;
trigger(2);
trigger(1); // error expected
wait(SC_ZERO_TIME);
log();
wait(1, SC_NS);
std::cout << "\n*** trigger 1-3 in the same delta cycle" << std::endl;
trigger(1);
trigger(3); // error expected
wait(SC_ZERO_TIME);
log();
wait(1, SC_NS);
std::cout << "\n*** trigger 1-4-1 in the same delta cycle" << std::endl;
trigger(1);
trigger(4); // error expected? (same value)
trigger(1); // NO error expected (original process)
wait(SC_ZERO_TIME);
log();
wait(1, SC_NS);
std::cout << "\n*** trigger 4-1 in the same delta cycle" << std::endl;
trigger(4);
trigger(1); // error expected? (same value)
wait(SC_ZERO_TIME);
log();
}
void trigger(int id) {
sc_assert( id > 0 && id <= num_drivers );
ev[id-1].notify();
wait(ev_schedule);
}
void driver(int value) {
log(value);
try {
sig.write(value);
} catch (const sc_core::sc_report& msg ) {
std::cout << "\n" << msg.what() << "\n" << std::endl;
}
ev_schedule.notify();
}
void log(int value = -1) {
std::cout
<< std::setw(8) << sc_core::sc_get_current_process_handle().name() << ": "
<< std::setw(5) << sc_core::sc_time_stamp()
<< " @ " << std::setw(2) << sc_core::sc_delta_count() << ": "
<< ( (value!=-1) ? "writing " : "reading " )
<< sig.name() << " = "
<< ( (value!=-1) ? value : sig.read() )
<< std::endl;
}
sc_core::sc_signal<int, sc_core::SC_MANY_WRITERS> sig;
sc_core::sc_event ev_schedule, ev[num_drivers];
};
int sc_main( int, char*[] )
{
dut top("dut");
sc_core::sc_start();
std::cout << "\nProgram completed" << std::endl;
return 0;
}
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