Method UnLock

src/task/mutex.cpp:74–99

}

auto Mutex::UnLock() -> Expected<void> {
  auto current_task = TaskManagerSingleton::instance().GetCurrentTask();
  if (current_task == nullptr) {
    klog::Err("Mutex::UnLock: Cannot unlock mutex '{}' outside task context",
              name);
    return std::unexpected(Error{ErrorCode::kMutexNoTaskContext});
  }

  Pid current_pid = current_task->pid;

  if (!IsLockedByCurrentTask()) {
    klog::Warn(
        "Mutex::UnLock: Task {} tried to unlock mutex '{}' it doesn't own",
        current_pid, name);
    return std::unexpected(Error{ErrorCode::kMutexNotOwned});
  }

  owner_.store(std::numeric_limits<Pid>::max(), std::memory_order_release);
  locked_.store(false, std::memory_order_release);

  klog::Debug("Mutex::UnLock: Task {} released mutex '{}'", current_pid, name);

  TaskManagerSingleton::instance().WakeupOne(resource_id_);

  return {};
}

auto Mutex::TryLock() -> Expected<void> {
  auto current_task = TaskManagerSingleton::instance().GetCurrentTask();