#include "kernel/test_support/cpu.hpp"

#include <kapi/cpu.hpp>

#include <atomic>
#include <stdexcept>

namespace
{
  auto static initialized = std::atomic_flag{};
}

namespace kapi::cpu
{

  auto init() -> void
  {
    if (initialized.test_and_set())
    {
      throw std::logic_error("kapi::cpu::init() called more than once");
    }

    // TODO: make sure that simulated interrupt can run.
  }

  auto halt() -> void
  {
    throw kernel::tests::cpu::halt{};
  }

  auto discover_topology() -> bool
  {
    // TODO: implement more meaningful simulated CPU topology discovery
    return true;
  }

}  // namespace kapi::cpu

namespace kernel::tests::cpu
{

  auto deinit() -> void
  {
    if (!initialized.test())
    {
      throw std::logic_error{"kapi::cpu::reset() called before kapi::cpu::init()"};
    }

    initialized.clear();
  }

}  // namespace kernel::tests::cpu