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35 lines
1.1 KiB
35 lines
1.1 KiB
/**
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* Copyright 2019 Huawei Technologies Co., Ltd
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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 "common/utils.h"
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#include <string>
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#include <vector>
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#include <atomic>
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namespace mindspore {
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namespace common {
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const int CACHED_STR_NUM = 1 << 8;
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const int CACHED_STR_MASK = CACHED_STR_NUM - 1;
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std::vector<std::string> STR_HOLDER(CACHED_STR_NUM);
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const char *SafeCStr(const std::string &&str) {
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static std::atomic<uint32_t> index{0};
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uint32_t cur_index = index++;
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cur_index = cur_index & CACHED_STR_MASK;
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STR_HOLDER[cur_index] = str;
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return STR_HOLDER[cur_index].c_str();
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}
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} // namespace common
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} // namespace mindspore
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