//
// The MIT License (MIT)
//
// Copyright (c) 2022 Livox. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//

#include "generate_seq.h"
#include <cstdint>

namespace livox {
namespace lidar {

uint32_t GenerateSeq::GetSeq() {
  static std::atomic<std::uint32_t> seq(1);
  uint32_t value = seq.load();
  uint32_t desired = 0;
  do {
    if (value == UINT16_MAX) {
      desired = 1;
    } else {
      desired = value + 1;
    }
  } while (!seq.compare_exchange_weak(value, desired));
  return desired;
}


} // namespace lidar
}  // namespace livox