#include "rosa/core/Unit.h"
#include "rosa/support/debug.hpp"
#include "rosa/support/log.h"

namespace rosa {


// Zero-initialized definitions of static members.
// NOTE: Initialization is not atomic.
std::atomic<uint64_t> Unit::CountUnits(0);
std::atomic<uint64_t> Unit::LiveUnits(0);

// Ctor. Incrementing static counters and initializing member fields.
Unit::Unit(const std::string &Name) noexcept
    : Id(++CountUnits),
      Name(Name.empty() ? "Unit_" + std::to_string(Id) : Name) {
  LOG_TRACE("Constructing Unit (" + this->Name + ")");
  ++LiveUnits;
}

// Dtor. Decrementing static live counter.
Unit::~Unit(void) noexcept {
  LOG_TRACE("Destroying Unit (" + Name + ")");
  --LiveUnits;
  ASSERT(LiveUnits >= 0);
}

// Default dump function, emitting the Name of the Unit.
std::string Unit::dump(void) const noexcept {
  LOG_TRACE("Dumping Unit (" + Name + ")");
  return "[Unit] " + Name;
}

std::ostream &operator<<(std::ostream &os, const Unit &unit) {
  os << unit.dump();
  return os;
}

} // End namespace rosa