mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
102 lines
3.1 KiB
C++
102 lines
3.1 KiB
C++
/**
|
|
* Copyright 2013-2022 Software Radio Systems Limited
|
|
*
|
|
* This file is part of srsRAN.
|
|
*
|
|
* srsRAN is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* srsRAN is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* A copy of the GNU Affero General Public License can be found in
|
|
* the LICENSE file in the top-level directory of this distribution
|
|
* and at http://www.gnu.org/licenses/.
|
|
*
|
|
*/
|
|
|
|
#ifndef SRSRAN_PHY_COMMON_INTERFACE_H
|
|
#define SRSRAN_PHY_COMMON_INTERFACE_H
|
|
|
|
#include "../radio/rf_buffer.h"
|
|
#include "../radio/rf_timestamp.h"
|
|
|
|
namespace srsran {
|
|
|
|
/**
|
|
* @brief Describes a physical layer common interface
|
|
*/
|
|
class phy_common_interface
|
|
{
|
|
private:
|
|
std::mutex tx_mutex; ///< Protect Tx attributes
|
|
std::condition_variable tx_cvar; ///< Tx condition variable
|
|
bool tx_hold = false; ///< Hold threads until the signal is transmitted
|
|
|
|
protected:
|
|
void reset_last_worker()
|
|
{
|
|
std::unique_lock<std::mutex> lock(tx_mutex);
|
|
tx_hold = true;
|
|
}
|
|
/**
|
|
* @brief Waits for the last worker to call `last_worker()` to prevent that the current SF worker is released and
|
|
* overwrites the transmit signal prior transmission
|
|
*/
|
|
void wait_last_worker()
|
|
{
|
|
std::unique_lock<std::mutex> lock(tx_mutex);
|
|
while (tx_hold) {
|
|
tx_cvar.wait(lock);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Notifies the last SF worker transmitted the baseband and all the workers waiting are released
|
|
*/
|
|
void last_worker()
|
|
{
|
|
std::unique_lock<std::mutex> lock(tx_mutex);
|
|
tx_hold = false;
|
|
tx_cvar.notify_all();
|
|
}
|
|
|
|
public:
|
|
/**
|
|
* @brief Describes a worker context
|
|
*/
|
|
struct worker_context_t {
|
|
uint32_t sf_idx = 0; ///< Subframe index
|
|
void* worker_ptr = nullptr; ///< Worker pointer for wait/release semaphore
|
|
bool last = false; ///< Indicates this worker is the last one in the sub-frame processing
|
|
srsran::rf_timestamp_t tx_time = {}; ///< Transmit time, used only by last worker
|
|
|
|
void copy(const worker_context_t& other)
|
|
{
|
|
sf_idx = other.sf_idx;
|
|
worker_ptr = other.worker_ptr;
|
|
last = other.last;
|
|
tx_time.copy(other.tx_time);
|
|
}
|
|
|
|
worker_context_t() = default;
|
|
worker_context_t(const worker_context_t& other) { copy(other); }
|
|
};
|
|
|
|
/**
|
|
* @brief Common PHY interface for workers to indicate they ended
|
|
* @param w_ctx Worker context
|
|
* @param tx_enable Indicates whether the buffer has baseband samples to transmit
|
|
* @param buffer Baseband buffer
|
|
*/
|
|
virtual void worker_end(const worker_context_t& w_ctx, const bool& tx_enable, srsran::rf_buffer_t& buffer) = 0;
|
|
};
|
|
|
|
} // namespace srsran
|
|
|
|
#endif // SRSRAN_PHY_COMMON_INTERFACE_H
|