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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.
*****************************************************************************/
/*****************************************************************************
simulation_callbacks.cpp -- Test of simulation phase callbacks
Note: requires simulation phase callback support enabled in the kernel
SC_ENABLE_SIMULATION_PHASE_CALLBACKS / --enable-phase-callbacks
Original Author: Philipp A. Hartmann, OFFIS, 2013-05-17
*****************************************************************************/
/*****************************************************************************
MODIFICATION LOG - modifiers, enter your name, affiliation, date and
changes you are making here.
Name, Affiliation, Date:
Description of Modification:
*****************************************************************************/
#include <systemc.h>
#ifdef BENCHMARK
# include "rusage_timer.h"
# define ROUNDS 20
# define NUM_TIMED_TRIGGERS 2000000
# define NUM_DELTA_TRIGGERS 50
# define VERBOSE 0
#else
# define ROUNDS 2
# define NUM_TIMED_TRIGGERS 10
# define NUM_DELTA_TRIGGERS 1
# define VERBOSE 1
#endif
#ifndef REGISTER_CALLBACKS
# define REGISTER_CALLBACKS 1
#endif
#ifndef EXTRA_METHOD
# define EXTRA_METHOD 0
#endif
#define TIMED_THREAD 1
#if TIMED_THREAD
# define TIMED_WAIT wait
# define TIMED_PROCESS SC_THREAD
#else
# define TIMED_WAIT next_trigger
# define TIMED_PROCESS SC_METHOD
#endif
#if REGISTER_CALLBACKS
//# define CALLBACK_MASK ( SC_END_OF_EVALUATION )
//# define CALLBACK_MASK ( SC_END_OF_UPDATE )
//# define CALLBACK_MASK ( SC_BEFORE_TIMESTEP )
# define CALLBACK_MASK ( SC_END_OF_UPDATE | SC_BEFORE_TIMESTEP )
#else
// SC_RUNNING (for EXTRA_METHOD)
# define CALLBACK_MASK ( SC_RUNNING )
#endif
static const sc_dt::uint64 max_rounds = ROUNDS;
static const sc_dt::uint64 max_timed_triggers = NUM_TIMED_TRIGGERS;
static const sc_dt::uint64 max_delta_triggers = NUM_DELTA_TRIGGERS;
static const sc_time delay(1, SC_NS);
SC_MODULE(phase_tracer)
{
SC_HAS_PROCESS(phase_tracer);
phase_tracer( sc_module_name = sc_core::sc_gen_unique_name("phase_tracer") )
: cb_mask(CALLBACK_MASK), cb_count(0)
{
#if REGISTER_CALLBACKS
cb_mask = register_simulation_phase_callback( CALLBACK_MASK );
#endif
}
virtual void simulation_phase_callback()
{
cb_count++;
# if VERBOSE
{
std::string ttp;
if( !sc_pending_activity() ) {
ttp = "MAX";
} else {
ttp = sc_time_to_pending_activity().to_string();
}
std::cout << name()
<< ": phase callback "
<< sc_get_status()
<< ": " << sc_time_stamp()
<< " -> pending activity: " << ttp
<< std::endl;
}
# endif
sc_assert( cb_mask & sc_get_status() );
}
~phase_tracer()
{ print_static_phase_stats( "[destructor]" ); }
void print_static_phase_stats( const char* phase )
{
#if VERBOSE
std::cout << name()
<< ": " << phase << ": "
<< cb_count << " callbacks called."
<< std::endl;
#endif
}
private:
unsigned cb_mask;
sc_dt::uint64 cb_count;
};
SC_MODULE(activities)
{
SC_CTOR(activities)
: timed_count(), delta_count()
{
TIMED_PROCESS(timed);
sensitive << timed_ev;
dont_initialize();
SC_METHOD(delta);
sensitive << delta_ev;
dont_initialize();
#if EXTRA_METHOD
SC_METHOD(extra);
sensitive << timed_ev;
dont_initialize();
#endif
}
void notify_round()
{ timed_ev.notify(SC_ZERO_TIME); }
private:
void timed()
{
# if TIMED_THREAD
while(1)
# endif
{
if( timed_count >= max_timed_triggers ) {
timed_count = 0;
TIMED_WAIT();
} else {
verbose();
++timed_count;
if( max_delta_triggers )
delta_ev.notify(SC_ZERO_TIME);
timed_ev.notify(delay);
TIMED_WAIT();
}
}
}
void delta()
{
++delta_count;
verbose();
if( delta_count >= max_delta_triggers ) {
delta_count = 0;
} else {
delta_ev.notify(SC_ZERO_TIME);
}
}
void extra()
{
if( sc_pending_activity_at_current_time() ) {
pt.simulation_phase_callback();
next_trigger(SC_ZERO_TIME);
} else if (sc_time_to_pending_activity()== sc_max_time()-sc_time_stamp() ) {
next_trigger();
} else {
pt.simulation_phase_callback();
next_trigger(sc_time_to_pending_activity());
}
}
void verbose()
{
#if VERBOSE
std::cout
<< sc_get_current_process_handle().name()
<< ": " << sc_time_stamp()
<< ": " << timed_count << "/" << delta_count
<< std::endl;
#endif
}
private:
phase_tracer pt;
sc_dt::uint64 timed_count, delta_count;
sc_event timed_ev, delta_ev;
};
int sc_main(int, char*[])
{
activities top("top");
sc_start(SC_ZERO_TIME);
for(unsigned i=0; i<max_rounds; ++i)
{
#ifdef BENCHMARK
rusage_timer timer;
#endif
top.notify_round();
sc_start();
#ifdef BENCHMARK
std::cout << timer.to_seconds() << std::endl;
#endif
}
sc_stop();
return 0;
}
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