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System.cpp
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System.cpp
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/*******************************************************************************
*
* File: System.cpp
*
* Contents: Implementation of System base-class.
*
* Copyright 2017
*
* Author: David Juhasz (david.juhasz@tuwien.ac.at)
*
******************************************************************************/
#include "rosa/core/System.h"
#include "rosa/core/Unit.h"
#include "rosa/config/config.h"
#include "rosa/support/debug.hpp"
#include "rosa/support/log.h"
namespace rosa {
System::System(const std::string &Name) noexcept : Name(Name),
CountUnits(0) {
LOG_TRACE("Creating System (" + Name + ")");
}
System::~System(void) {
LOG_TRACE("Destroying System (" + Name + ")");
if (!empty()) {
ROSA_CRITICAL("Trying to destroy a non-empty System");
}
}
Unit &System::createUnit(UnitCreator C, const std::string &Name) noexcept {
const uint64_t Id = ++CountUnits;
const std::string N = Name.empty() ? "Unit_" + std::to_string(Id) : Name;
Unit *U = C(Id, N, *this);
// Scope protected container access.
{
// Obtain exclusive access and instert the Unit.
std::lock_guard<std::mutex> L(RegisterMutex);
auto result = Units.insert(U);
if (!result.second) {
ROSA_CRITICAL("Could not register Unit");
}
}
LOG_TRACE("Unit created and registered (" + U->FullName + ")");
return *U;
}
void System::destroyUnit(Unit &U) noexcept {
ASSERT(Units.find(&U) != Units.end());
LOG_TRACE("Destroying Unit (" + U.FullName + ")");
// Scope protected container access.
{
// Obtain exclusive access and remove the Unit.
std::lock_guard<std::mutex> L(RegisterMutex);
auto result = Units.erase(&U);
// NOTE: This case is catched by assertion when that is enabled.
if (!result) {
ROSA_CRITICAL("Trying to remove unregistered Unit");
}
}
delete &U;
}
size_t System::numberOfConstructedUnits(void) const noexcept {
return CountUnits;
}
size_t System::numberOfLiveUnits(void) const noexcept { return Units.size(); }
bool System::empty(void) const noexcept { return numberOfLiveUnits() == 0; }
} // End namespace rosa

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