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/*
* Copyright 2018 Google, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
*/
#include "systemc/core/sensitivity.hh"
#include "base/logging.hh"
#include "systemc/core/event.hh"
#include "systemc/core/port.hh"
#include "systemc/core/process.hh"
#include "systemc/core/scheduler.hh"
#include "systemc/ext/channel/sc_in.hh"
#include "systemc/ext/channel/sc_inout.hh"
#include "systemc/ext/channel/sc_out.hh"
#include "systemc/ext/core/sc_export.hh"
#include "systemc/ext/core/sc_interface.hh"
#include "systemc/ext/core/sc_port.hh"
namespace sc_gem5
{
/*
* Common sensitivity interface.
*/
void
Sensitivity::satisfy()
{
process->satisfySensitivity(this);
}
bool
Sensitivity::notify(Event *e)
{
if (process->disabled())
return false;
satisfy();
return true;
}
bool
Sensitivity::ofMethod()
{
return process->procKind() == sc_core::SC_METHOD_PROC_;
}
/*
* Dynamic vs. static sensitivity.
*/
void
DynamicSensitivity::addToEvent(const ::sc_core::sc_event *e)
{
Event::getFromScEvent(e)->addSensitivity(this);
}
void
DynamicSensitivity::delFromEvent(const ::sc_core::sc_event *e)
{
Event::getFromScEvent(e)->delSensitivity(this);
}
void
StaticSensitivity::addToEvent(const ::sc_core::sc_event *e)
{
Event::getFromScEvent(e)->addSensitivity(this);
}
void
StaticSensitivity::delFromEvent(const ::sc_core::sc_event *e)
{
Event::getFromScEvent(e)->delSensitivity(this);
}
/*
* Static sensitivities.
*/
void
newStaticSensitivityEvent(Process *p, const sc_core::sc_event *e)
{
auto s = new StaticSensitivityEvent(p, e);
s->addToEvent(s->event);
p->addStatic(s);
}
void
newStaticSensitivityInterface(Process *p, const sc_core::sc_interface *i)
{
auto s = new StaticSensitivityInterface(p, i);
s->addToEvent(s->event);
p->addStatic(s);
}
void
newStaticSensitivityPort(Process *p, const sc_core::sc_port_base *pb)
{
auto s = new StaticSensitivityPort(p);
Port *port = Port::fromPort(pb);
port->sensitive(s);
p->addStatic(s);
}
void
newStaticSensitivityExport(Process *p, const sc_core::sc_export_base *exp)
{
auto s = new StaticSensitivityExport(p, exp);
s->addToEvent(s->event);
p->addStatic(s);
}
void
newStaticSensitivityFinder(Process *p, const sc_core::sc_event_finder *f)
{
auto s = new StaticSensitivityFinder(p, f);
Port *port = Port::fromPort(f->port());
port->sensitive(s);
p->addStatic(s);
}
StaticSensitivityInterface::StaticSensitivityInterface(
Process *p, const sc_core::sc_interface *i) :
Sensitivity(p), StaticSensitivity(p),
SensitivityEvent(p, &i->default_event())
{}
StaticSensitivityExport::StaticSensitivityExport(
Process *p, const sc_core::sc_export_base *exp) :
Sensitivity(p), StaticSensitivity(p),
SensitivityEvent(p, &exp->get_interface()->default_event())
{}
const ::sc_core::sc_event &
StaticSensitivityFinder::find(::sc_core::sc_interface *i)
{
return finder->find_event(i);
}
/*
* Dynamic sensitivities.
*/
void
newDynamicSensitivityEvent(Process *p, const sc_core::sc_event *e)
{
auto s = new DynamicSensitivityEvent(p, e);
s->addToEvent(s->event);
p->setDynamic(s);
}
void
newDynamicSensitivityEventOrList(
Process *p, const sc_core::sc_event_or_list *eol)
{
auto s = new DynamicSensitivityEventOrList(p, eol);
for (auto event: s->events)
s->addToEvent(event);
p->setDynamic(s);
}
void newDynamicSensitivityEventAndList(
Process *p, const sc_core::sc_event_and_list *eal)
{
auto s = new DynamicSensitivityEventAndList(p, eal);
for (auto event: s->events)
s->addToEvent(event);
p->setDynamic(s);
}
DynamicSensitivityEventOrList::DynamicSensitivityEventOrList(
Process *p, const sc_core::sc_event_or_list *eol) :
Sensitivity(p), DynamicSensitivity(p), SensitivityEvents(p, eol->events)
{}
bool
DynamicSensitivityEventOrList::notify(Event *e)
{
if (process->disabled())
return false;
events.erase(e->sc_event());
// All the other events need this deleted from their lists since this
// sensitivity has been satisfied without them triggering.
for (auto le: events)
delFromEvent(le);
satisfy();
return true;
}
DynamicSensitivityEventAndList::DynamicSensitivityEventAndList(
Process *p, const sc_core::sc_event_and_list *eal) :
Sensitivity(p), DynamicSensitivity(p), SensitivityEvents(p, eal->events)
{}
bool
DynamicSensitivityEventAndList::notify(Event *e)
{
if (process->disabled())
return false;
events.erase(e->sc_event());
// This sensitivity is satisfied if all events have triggered.
if (events.empty())
satisfy();
return true;
}
} // namespace sc_gem5
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