Method size

app/src/IO/CircularBuffer.h:248–257

 */
template<typename T, Concepts::ByteLike StorageType>
qsizetype IO::CircularBuffer<T, StorageType>::size() const noexcept
{
  const qsizetype head = m_head.load(std::memory_order_acquire);
  const qsizetype tail = m_tail.load(std::memory_order_acquire);

  if (tail >= head)
    return tail - head;
  else
    return m_capacity - head + tail;
}

/**
 * @brief Returns the free space available in the buffer.