void thread_unsafe_event_loop::enqueue()

in source/thread_unsafe_event_loop.cpp [43:69]

• 22 lines of code
• 7 McCabe index (conditional complexity)

void thread_unsafe_event_loop::enqueue(operation_base* op) noexcept {
  auto* current = head_;
  if (current == nullptr || op->dueTime_ < current->dueTime_) {
    // insert at head of list
    head_ = op;
    op->prevPtr_ = &head_;
    op->next_ = current;
    if (current != nullptr) {
      current->prevPtr_ = &op->next_;
    }
  } else {
    // Traverse the list until we find the item we should
    // be inserted after.
    while (current->next_ != nullptr &&
           current->next_->dueTime_ <= op->dueTime_) {
      current = current->next_;
    }

    // Insert after 'current'
    op->next_ = current->next_;
    if (op->next_ != nullptr) {
      op->next_->prevPtr_ = &op->next_;
    }
    op->prevPtr_ = &current->next_;
    current->next_ = op;
  }
}