8f43927575
examples/ is based on KasperskyLab/knp at 55470ed6 with local changes to the mnist-learn altai/blifat models, cuda-backend CMake and model_loader. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
/**
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* @file uid.cpp
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* @brief UID implementation.
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* @kaspersky_support Artiom N.
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* @date 22.05.20
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* @license Apache 2.0
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* @copyright © 2024 AO Kaspersky Lab
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <knp/core/uid.h>
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#include <atomic>
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#include <iostream>
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namespace knp::core
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{
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namespace
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{
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// NOLINTNEXTLINE(cppcoreguidelines-avoid-non-const-global-variables)
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volatile ::std::atomic_uint64_t tag_counter = 1;
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} // namespace
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::boost::uuids::uuid continuously_uid_generator::operator()() const
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{
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::boost::uuids::uuid result = boost::uuids::nil_uuid();
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uint64_t c_value = tag_counter++;
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constexpr auto value_size = sizeof(c_value);
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static_assert(
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sizeof(decltype(tag_counter)::value_type) <= ::boost::uuids::uuid::static_size(), "UID counter size error.");
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for (size_t i = 0; i < value_size; ++i)
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{
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auto digit = c_value & 0xffU;
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c_value >>= 8;
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*(result.begin() + i) = static_cast<uint8_t>(digit);
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}
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return result;
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}
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void continuously_uid_generator::reset(uint64_t initial_value)
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{
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tag_counter = initial_value;
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}
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} // namespace knp::core
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