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//===-- core/MessagingSystemImpl.hpp ----------------------------*- C++ -*-===//
//
// The RoSA Framework
//
// Distributed under the terms and conditions of the Boost Software License 1.0.
// See accompanying file LICENSE.
//
// If you did not receive a copy of the license file, see
// http://www.boost.org/LICENSE_1_0.txt.
//
//===----------------------------------------------------------------------===//
///
/// \file core/MessagingSystemImpl.hpp
///
/// \author David Juhasz (david.juhasz@tuwien.ac.at)
///
/// \date 2017
///
/// \brief Declaration of a basic implementation of the \c rosa::MessagingSystem
/// interface.
///
//===----------------------------------------------------------------------===//
#ifndef ROSA_LIB_CORE_MESSAGINGSYSTEMIMPL_HPP
#define ROSA_LIB_CORE_MESSAGINGSYSTEMIMPL_HPP
#include "SystemImpl.hpp"
#include "rosa/core/MessagingSystem.hpp"
namespace rosa {
/// Implements \c rosa::MessagingSystem by extending \c rosa::SystemImpl with
/// adding a simple implementation of sending messages: directly invoking
/// \c rosa::Agent instances with given \c rosa::Message objects.
///
/// \note Keep in mind that sending a \c rosa::Message object with this
/// implementation translates into a direct function call.
class MessagingSystemImpl : public MessagingSystem, public SystemImpl {
/// Alies for the base-class \c rosa::SystemImpl.
using Base = SystemImpl;
public:
/// Creates an instance.
///
/// \param Name name of the new instance
MessagingSystemImpl(const std::string &Name) noexcept;
/// \defgroup MessagingSystemImplCallForwarding Call forwardings of
/// rosa::MessagingSystemImpl
///
/// \c rosa::MessagingSystemImpl call forwardings
///
/// \note Simply forwarding calls to implementations provided by
/// \c rosa::MessagingSystem::Base for the \c rosa::System interface.
///
/// \todo How could we use the inherited implementations in a simpler way?
///@{
bool operator==(const System &Other) const noexcept override {
return Base::operator==(Other);
}
protected:
id_t nextId(void) noexcept override { return Base::nextId(); }
bool isSystemCleaned(void) const noexcept override {
return Base::isSystemCleaned();
}
void markCleaned(void) noexcept override { Base::markCleaned(); }
void registerUnit(Unit &U) noexcept override { Base::registerUnit(U); }
void destroyUnit(Unit &U) noexcept override { Base::destroyUnit(U); }
bool isUnitRegistered(const Unit &U) const noexcept override {
return Base::isUnitRegistered(U);
}
public:
const std::string &name(void) const noexcept override { return Base::name(); }
size_t numberOfConstructedUnits(void) const noexcept override {
return Base::numberOfConstructedUnits();
}
size_t numberOfLiveUnits(void) const noexcept override {
return Base::numberOfLiveUnits();
}
bool empty(void) const noexcept override { return Base::empty(); }
///@}
/// Sends a \c rosa::message_t instance to the \c rosa::Agent instance
/// referred by a \c rosa::AgentHandle -- by directly invoking the
/// \c rosa::Agent instance with the \c rosa::Message object.
///
/// \note If the given \c rosa::Message object cannot be handled by the
/// referred \c rosa::Agent instance, the \c rosa::Message object is simply
/// ignored.
///
/// \param H refers to the \c rosa::Agent instance to send to
/// \param M message to send
///
/// \pre The referred \c rosa::Agent instance is owned by \p this object and
/// also registered: \code
/// &unwrapSystem(H) == this && isUnitRegistered(unwrapAgent(H))
/// \endcode
void send(const AgentHandle &H, message_t &&M) noexcept override;
};
} // End namespace rosa
#endif // ROSA_LIB_CORE_MESSAGINGSYSTEMIMPL_HPP

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