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//
// Copyright 2019 Ettus Research, a National Instruments Brand
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef INCLUDED_LIBUHD_TX_ASYNC_MSG_QUEUE_HPP
#define INCLUDED_LIBUHD_TX_ASYNC_MSG_QUEUE_HPP
#include <uhd/types/metadata.hpp>
#include <boost/lockfree/queue.hpp>
namespace uhd { namespace rfnoc {
/*!
* Implements queue of async messages originating from the tx data transport
* and from the rfnoc graph.
*/
class tx_async_msg_queue
{
public:
using sptr = std::shared_ptr<tx_async_msg_queue>;
//! Constructor
tx_async_msg_queue(size_t capacity);
/*!
* Retrieve async message from queue
*
* \param async_metadata the metadata to be filled in
* \param timeout_ms the timeout in milliseconds to wait for a message
* \return true when the async_metadata is valid, false for timeout
*/
bool recv_async_msg(async_metadata_t& async_metadata, int32_t timeout_ms);
/*!
* Push an async message onto the queue
*
* \param async_metadata the metadata to be pushed
*/
void enqueue(const async_metadata_t& async_metadata);
private:
boost::lockfree::queue<async_metadata_t> _queue;
};
}} // namespace uhd::rfnoc
#endif /* INCLUDED_LIBUHD_TX_ASYNC_MSG_QUEUE_HPP */
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