mirror of https://github.com/PentHertz/srsLTE.git
fix memory management of softbuffers in mac::ue class
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02539344fb
commit
e0da736a5f
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@ -41,11 +41,15 @@ public:
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using cc_softbuffer_rx_list_t = std::vector<srslte_softbuffer_rx_t>;
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cc_buffer_handler();
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~cc_buffer_handler();
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bool empty() const { return softbuffer_tx.empty(); }
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void reset();
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void allocate_cc(uint32_t nof_prb, uint32_t nof_rx_harq_proc, uint32_t nof_tx_harq_proc);
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void deallocate_cc();
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cc_softbuffer_tx_list_t& get_tx_softbuffer() { return softbuffer_tx; }
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cc_softbuffer_rx_list_t& get_rx_softbuffer() { return softbuffer_rx; }
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bool empty() const { return softbuffer_tx_list.empty(); }
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cc_softbuffer_tx_list_t& get_tx_softbuffer() { return softbuffer_tx_list; }
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srslte_softbuffer_rx_t& get_rx_softbuffer(uint32_t tti) { return softbuffer_rx_list[tti % nof_rx_harq_proc]; }
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srslte::byte_buffer_t* get_tx_payload_buffer(size_t harq_pid, size_t tb)
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{
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return tx_payload_buffer[harq_pid][tb].get();
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@ -53,9 +57,14 @@ public:
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std::map<uint32_t, uint8_t*>& get_rx_used_buffers() { return rx_used_buffers; }
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private:
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cc_softbuffer_tx_list_t softbuffer_tx; ///< List of softbuffer lists for Tx
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cc_softbuffer_rx_list_t softbuffer_rx; ///< List of softbuffer lists for Rx
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// args
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uint32_t nof_prb;
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uint32_t nof_rx_harq_proc;
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uint32_t nof_tx_harq_proc;
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// buffers
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cc_softbuffer_tx_list_t softbuffer_tx_list; ///< List of softbuffer lists for Tx
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cc_softbuffer_rx_list_t softbuffer_rx_list; ///< List of softbuffer lists for Rx
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std::map<uint32_t, uint8_t*> rx_used_buffers;
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// One buffer per TB per HARQ process and per carrier is needed for each UE.
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@ -125,8 +134,6 @@ public:
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int read_pdu(uint32_t lcid, uint8_t* payload, uint32_t requested_bytes) final;
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private:
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void allocate_cc_buffers(const uint32_t num_cc = 1); ///< Add and initialize softbuffers for CC
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void allocate_sdu(srslte::sch_pdu* pdu, uint32_t lcid, uint32_t sdu_len);
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bool process_ce(srslte::sch_subh* subh);
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void allocate_ce(srslte::sch_pdu* pdu, uint32_t lcid);
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@ -31,6 +31,61 @@ cc_buffer_handler::cc_buffer_handler()
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}
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}
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cc_buffer_handler::~cc_buffer_handler()
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{
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deallocate_cc();
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}
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/**
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* Allocate and initialize softbuffers for Tx and Rx. It uses the configured
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* number of HARQ processes and cell width.
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*
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* @param num_cc Number of carriers to add buffers for (default 1)
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* @return number of carriers
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*/
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void cc_buffer_handler::allocate_cc(uint32_t nof_prb_, uint32_t nof_rx_harq_proc_, uint32_t nof_tx_harq_proc_)
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{
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assert(empty());
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nof_prb = nof_prb_;
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nof_rx_harq_proc = nof_rx_harq_proc_;
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nof_tx_harq_proc = nof_tx_harq_proc_;
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// Create and init Rx buffers
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softbuffer_rx_list.resize(nof_rx_harq_proc);
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for (srslte_softbuffer_rx_t& buffer : softbuffer_rx_list) {
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srslte_softbuffer_rx_init(&buffer, nof_prb);
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}
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// Create and init Tx buffers
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softbuffer_tx_list.resize(nof_tx_harq_proc);
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for (auto& buffer : softbuffer_tx_list) {
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srslte_softbuffer_tx_init(&buffer, nof_prb);
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}
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}
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void cc_buffer_handler::deallocate_cc()
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{
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for (auto& buffer : softbuffer_rx_list) {
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srslte_softbuffer_rx_free(&buffer);
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}
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softbuffer_rx_list.clear();
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for (auto& buffer : softbuffer_tx_list) {
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srslte_softbuffer_tx_free(&buffer);
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}
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softbuffer_tx_list.clear();
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}
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void cc_buffer_handler::reset()
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{
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for (auto& buffer : softbuffer_rx_list) {
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srslte_softbuffer_rx_reset(&buffer);
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}
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for (auto& buffer : softbuffer_tx_list) {
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srslte_softbuffer_tx_reset(&buffer);
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}
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}
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ue::ue(uint16_t rnti_,
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uint32_t nof_prb_,
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sched_interface* sched_,
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@ -56,34 +111,24 @@ ue::ue(uint16_t rnti_,
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pdus(logger, 128),
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nof_rx_harq_proc(nof_rx_harq_proc_),
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nof_tx_harq_proc(nof_tx_harq_proc_),
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ta_fsm(this)
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ta_fsm(this),
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cc_buffers(nof_cells_)
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{
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cc_buffers.resize(nof_cells_);
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pdus.init(this);
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// Allocate buffer for PCell
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allocate_cc_buffers();
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cc_buffers[0].allocate_cc(nof_prb, nof_rx_harq_proc, nof_tx_harq_proc);
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}
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ue::~ue()
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{
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// Free up all softbuffers for all CCs
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for (auto& cc : cc_buffers) {
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for (auto& buffer : cc.get_rx_softbuffer()) {
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srslte_softbuffer_rx_free(&buffer);
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}
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for (auto& buffer : cc.get_tx_softbuffer()) {
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srslte_softbuffer_tx_free(&buffer);
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}
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}
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{
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std::unique_lock<std::mutex> lock(rx_buffers_mutex);
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for (auto& cc : cc_buffers) {
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for (auto& q : cc.get_rx_used_buffers()) {
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pdus.deallocate(q.second);
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}
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cc.get_rx_softbuffer().clear();
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cc.get_rx_used_buffers().clear();
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}
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}
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}
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@ -92,41 +137,9 @@ void ue::reset()
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{
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ue_metrics = {};
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nof_failures = 0;
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for (auto& cc : cc_buffers) {
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for (auto& buffer : cc.get_rx_softbuffer()) {
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srslte_softbuffer_rx_reset(&buffer);
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}
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for (auto& buffer : cc.get_tx_softbuffer()) {
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srslte_softbuffer_tx_reset(&buffer);
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}
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}
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}
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/**
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* Allocate and initialize softbuffers for Tx and Rx and
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* append to current list of CC buffers. It uses the configured
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* number of HARQ processes and cell width.
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*
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* @param num_cc Number of carriers to add buffers for (default 1)
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* @return number of carriers
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*/
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void ue::allocate_cc_buffers(const uint32_t num_cc)
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{
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for (uint32_t i = 0; i < num_cc; ++i) {
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if (cc_buffers[i].empty()) {
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// Create and init Rx buffers for Pcell
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cc_buffers[i].get_rx_softbuffer().resize(nof_rx_harq_proc);
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for (auto& buffer : cc_buffers[i].get_rx_softbuffer()) {
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srslte_softbuffer_rx_init(&buffer, nof_prb);
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}
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// Create and init Tx buffers for Pcell
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cc_buffers[i].get_tx_softbuffer().resize(nof_tx_harq_proc);
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auto& harq_buffers = cc_buffers[i].get_tx_softbuffer();
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for (auto& buffer : harq_buffers) {
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srslte_softbuffer_tx_init(&buffer, nof_prb);
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}
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}
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cc.reset();
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}
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}
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@ -142,7 +155,7 @@ srslte_softbuffer_rx_t* ue::get_rx_softbuffer(const uint32_t ue_cc_idx, const ui
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return nullptr;
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}
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return &cc_buffers.at(ue_cc_idx).get_rx_softbuffer().at(tti % nof_rx_harq_proc);
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return &cc_buffers.at(ue_cc_idx).get_rx_softbuffer(tti % nof_rx_harq_proc);
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}
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srslte_softbuffer_tx_t*
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@ -463,7 +476,11 @@ void ue::allocate_ce(srslte::sch_pdu* pdu, uint32_t lcid)
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if (pdu->get()->set_scell_activation_cmd(active_scell_list)) {
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phy->set_activation_deactivation_scell(rnti, active_scell_list);
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// Allocate and initialize Rx/Tx softbuffers for new carriers (exclude PCell)
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allocate_cc_buffers(active_scell_list.size() - 1);
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for (size_t i = 0; i < std::min(active_scell_list.size(), cc_buffers.size()); ++i) {
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if (active_scell_list[i]) {
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cc_buffers[i].allocate_cc(nof_prb, nof_rx_harq_proc, nof_tx_harq_proc);
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}
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}
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} else {
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logger.error("CE: Setting SCell Activation CE");
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}
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