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105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
5 years ago
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/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSLTE_RRC_CFG_UTILS_H
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#define SRSLTE_RRC_CFG_UTILS_H
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#include "srslte/asn1/rrc_asn1.h"
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namespace srslte {
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//! convenience function overload to extract rrc fields Id
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constexpr uint8_t get_id(const asn1::rrc::srb_to_add_mod_s& obj)
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{
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return obj.srb_id;
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}
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constexpr uint8_t get_id(const asn1::rrc::drb_to_add_mod_s& obj)
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{
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return obj.drb_id;
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}
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//! Functor to compare RRC config elements (e.g. SRB/measObj/Rep) based on ID
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template <typename T>
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struct field_id_cmp {
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bool operator()(const T& lhs, const T& rhs) const { return get_id(lhs) < get_id(rhs); }
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template <typename IdType>
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bool operator()(const T& lhs, IdType id) const
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{
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return get_id(lhs) < id;
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}
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template <typename IdType>
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bool operator()(IdType id, const T& rhs) const
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{
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return id < get_id(rhs);
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}
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};
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using srb_id_cmp = field_id_cmp<asn1::rrc::srb_to_add_mod_s>;
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using drb_id_cmp = field_id_cmp<asn1::rrc::drb_to_add_mod_s>;
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//! Search of rrc cfg element based on ID. Assumes sorted list.
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template <typename Container, typename IdType>
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typename Container::iterator binary_find(Container& c, IdType id)
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{
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auto it = std::lower_bound(c.begin(), c.end(), id, field_id_cmp<decltype(*c.begin())>{});
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return (it == c.end() or get_id(*it) != id) ? c.end() : it;
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}
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template <typename Container, typename IdType>
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typename Container::const_iterator binary_find(const Container& c, IdType id)
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{
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auto it = std::lower_bound(c.begin(), c.end(), id, field_id_cmp<decltype(*c.begin())>{});
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return (it == c.end() or get_id(*it) != id) ? c.end() : it;
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}
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//! Update RRC field toAddModList
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template <typename List, typename RemFunctor, typename AddFunctor, typename ModFunctor>
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void apply_cfg_list_updates(List& src_list,
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List& target_list,
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RemFunctor rem_func,
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AddFunctor add_func,
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ModFunctor mod_func)
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{
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// Sort by ID
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std::sort(src_list.begin(), src_list.end(), field_id_cmp<decltype(*src_list.begin())>{});
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std::sort(target_list.begin(), target_list.end(), field_id_cmp<decltype(*target_list.begin())>{});
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auto src_it = src_list.begin();
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auto target_it = target_list.begin();
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bool src_left = src_it != src_list.end();
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bool target_left = target_it != target_list.end();
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while (src_left or target_left) {
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if (not target_left or (src_left and get_id(*src_it) < get_id(*target_it))) {
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rem_func(src_it++);
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} else if (not src_left or (target_left and get_id(*src_it) > get_id(*target_it))) {
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// a new object has been added to target
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add_func(target_it++);
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} else {
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mod_func(src_it++, target_it++);
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}
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src_left = src_it != src_list.end();
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target_left = target_it != target_list.end();
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}
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}
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} // namespace srslte
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#endif // SRSLTE_RRC_CFG_UTILS_H
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