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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/object.hh"
#include <algorithm>
#include <stack>
#include "systemc/core/event.hh"
#include "systemc/core/module.hh"
#include "systemc/core/scheduler.hh"
#include "systemc/ext/core/messages.hh"
#include "systemc/ext/core/sc_module.hh"
#include "systemc/ext/core/sc_simcontext.hh"
namespace sc_gem5
{
namespace
{
ObjectsIt
findObjectIn(Objects &objects, const std::string &name)
{
ObjectsIt it;
for (it = objects.begin(); it != objects.end(); it++)
if (!strcmp((*it)->name(), name.c_str()))
break;
return it;
}
void
addObject(Objects *objects, sc_core::sc_object *object)
{
objects->emplace(objects->end(), object);
}
void
popObject(Objects *objects, const std::string &name)
{
ObjectsIt it = findObjectIn(*objects, name);
assert(it != objects->end());
std::swap(objects->back(), *it);
objects->pop_back();
}
bool
nameIsUnique(Objects *objects, Events *events, const std::string &name)
{
for (auto obj: *objects)
if (!strcmp(obj->basename(), name.c_str()))
return false;
for (auto event: *events)
if (!strcmp(event->basename(), name.c_str()))
return false;
return true;
}
} // anonymous namespace
Object::Object(sc_core::sc_object *_sc_obj) : Object(_sc_obj, nullptr) {}
Object::Object(sc_core::sc_object *_sc_obj, const char *obj_name) :
_sc_obj(_sc_obj), _basename(obj_name ? obj_name : ""), parent(nullptr)
{
if (_basename == "")
_basename = ::sc_core::sc_gen_unique_name("object");
parent = pickParentObj();
Module *n = newModule();
if (n) {
// We are a module in the process of being constructed.
n->finish(this);
}
std::string original_name = _basename;
_basename = sc_gem5::pickUniqueName(parent, original_name);
if (parent)
addObject(&parent->_gem5_object->children, _sc_obj);
else
addObject(&topLevelObjects, _sc_obj);
addObject(&allObjects, _sc_obj);
sc_core::sc_object *sc_p = parent;
std::string path = "";
while (sc_p) {
path = std::string(sc_p->basename()) + std::string(".") + path;
sc_p = sc_p->get_parent_object();
}
if (_basename != original_name) {
std::string message = path + original_name +
". Latter declaration will be renamed to " +
path + _basename;
SC_REPORT_WARNING(sc_core::SC_ID_INSTANCE_EXISTS_, message.c_str());
}
_name = path + _basename;
}
Object::Object(sc_core::sc_object *_sc_obj, const Object &arg) :
Object(_sc_obj, arg._basename.c_str())
{}
Object &
Object::operator = (const Object &)
{
return *this;
}
Object::~Object()
{
// Promote all children to be top level objects.
for (auto child: children) {
addObject(&topLevelObjects, child);
child->_gem5_object->parent = nullptr;
}
children.clear();
for (auto event: events)
Event::getFromScEvent(event)->clearParent();
if (parent)
popObject(&parent->_gem5_object->children, _name);
else
popObject(&topLevelObjects, _name);
popObject(&allObjects, _name);
}
const char *
Object::name() const
{
return _name.c_str();
}
const char *
Object::basename() const
{
return _basename.c_str();
}
void
Object::print(std::ostream &out) const
{
out << name();
}
void
Object::dump(std::ostream &out) const
{
out << "name = " << name() << "\n";
out << "kind = " << _sc_obj->kind() << "\n";
}
const std::vector<sc_core::sc_object *> &
Object::get_child_objects() const
{
return children;
}
const std::vector<sc_core::sc_event *> &
Object::get_child_events() const
{
return events;
}
sc_core::sc_object *Object::get_parent_object() const
{
return parent;
}
bool
Object::add_attribute(sc_core::sc_attr_base &attr)
{
return cltn.push_back(&attr);
}
sc_core::sc_attr_base *
Object::get_attribute(const std::string &attr)
{
return cltn[attr];
}
sc_core::sc_attr_base *
Object::remove_attribute(const std::string &attr)
{
return cltn.remove(attr);
}
void
Object::remove_all_attributes()
{
cltn.remove_all();
}
int
Object::num_attributes() const
{
return cltn.size();
}
sc_core::sc_attr_cltn &
Object::attr_cltn()
{
return cltn;
}
const sc_core::sc_attr_cltn &
Object::attr_cltn() const
{
return cltn;
}
sc_core::sc_simcontext *
Object::simcontext() const
{
return sc_core::sc_get_curr_simcontext();
}
EventsIt
Object::addChildEvent(sc_core::sc_event *e)
{
return events.emplace(events.end(), e);
}
void
Object::delChildEvent(sc_core::sc_event *e)
{
EventsIt it = std::find(events.begin(), events.end(), e);
assert(it != events.end());
std::swap(*it, events.back());
events.pop_back();
}
std::string
Object::pickUniqueName(std::string base)
{
std::string seed = base;
while (!nameIsUnique(&children, &events, base))
base = ::sc_core::sc_gen_unique_name(seed.c_str());
return base;
}
std::string
pickUniqueName(::sc_core::sc_object *parent, std::string base)
{
if (parent)
return Object::getFromScObject(parent)->pickUniqueName(base);
std::string seed = base;
while (!nameIsUnique(&topLevelObjects, &topLevelEvents, base))
base = ::sc_core::sc_gen_unique_name(seed.c_str());
return base;
}
Objects topLevelObjects;
Objects allObjects;
const std::vector<sc_core::sc_object *> &
getTopLevelScObjects()
{
return topLevelObjects;
}
sc_core::sc_object *
findObject(const char *name, const Objects &objects)
{
ObjectsIt it = findObjectIn(allObjects, name);
return it == allObjects.end() ? nullptr : *it;
}
namespace
{
std::stack<sc_core::sc_object *> objParentStack;
} // anonymous namespace
sc_core::sc_object *
pickParentObj()
{
if (!objParentStack.empty())
return objParentStack.top();
Process *p = scheduler.current();
if (p)
return p;
return nullptr;
}
void pushParentObj(sc_core::sc_object *obj) { objParentStack.push(obj); }
void popParentObj() { objParentStack.pop(); }
} // namespace sc_gem5