fifo_resize.hh

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#ifndef __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_RESIZE_HH__
#define __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_RESIZE_HH__

// Resize interface.
namespace tlm
{

template <typename T>
inline void
tlm_fifo<T>::nb_expand(unsigned int n)
{
    if (m_size >= 0) {
        m_expand = true;
        m_size += n;
        request_update();
    }
}

template <typename T>
inline void
tlm_fifo<T>::nb_unbound(unsigned int n)
{
    m_expand = true;
    m_size = -n;

    if (buffer.size() < static_cast<int>(n)) {
        buffer.resize(n);
    }

    request_update();
}

template <typename T>
inline bool
tlm_fifo<T>::nb_reduce(unsigned int n)
{
    if (m_size < 0) {
        return false;
    }

    return nb_bound(size() - n);
}

template <typename T>
inline bool
tlm_fifo<T>::nb_bound(unsigned int new_size)
{
    bool ret = true;

    if (static_cast<int>(new_size) < used()) {
        new_size = used();
        ret = false;
    }

    m_size = new_size;
    return ret;
}

} // namespace tlm

#endif /* __TLM_CORE_1_REQ_RSP_CHANNELS_FIFO_FIFO_RESIZE_HH__ */