| 1 | // Copyright 2015 Google Inc. All rights reserved. |
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| 2 | // |
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| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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| 4 | // you may not use this file except in compliance with the License. |
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| 5 | // You may obtain a copy of the License at |
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| 6 | // |
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| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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| 8 | // |
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| 9 | // Unless required by applicable law or agreed to in writing, software |
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| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 12 | // See the License for the specific language governing permissions and |
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| 13 | // limitations under the License. |
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| 14 | |
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| 15 | #include <benchmark/benchmark.h> |
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| 16 | |
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| 17 | namespace benchmark { |
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| 18 | |
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| 19 | namespace { |
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| 20 | |
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| 21 | // Compute the total size of a pack of std::strings |
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| 22 | size_t size_impl() { return 0; } |
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| 23 | |
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| 24 | template <typename Head, typename... Tail> |
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| 25 | size_t size_impl(const Head& head, const Tail&... tail) { |
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| 26 | return head.size() + size_impl(tail...); |
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| 27 | } |
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| 28 | |
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| 29 | // Join a pack of std::strings using a delimiter |
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| 30 | // TODO: use absl::StrJoin |
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| 31 | void join_impl(std::string&, char) {} |
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| 32 | |
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| 33 | template <typename Head, typename... Tail> |
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| 34 | void join_impl(std::string& s, const char delimiter, const Head& head, |
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| 35 | const Tail&... tail) { |
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| 36 | if (!s.empty() && !head.empty()) { |
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| 37 | s += delimiter; |
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| 38 | } |
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| 39 | |
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| 40 | s += head; |
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| 41 | |
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| 42 | join_impl(s, delimiter, tail...); |
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| 43 | } |
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| 44 | |
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| 45 | template <typename... Ts> |
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| 46 | std::string join(char delimiter, const Ts&... ts) { |
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| 47 | std::string s; |
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| 48 | s.reserve(sizeof...(Ts) + size_impl(ts...)); |
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| 49 | join_impl(s, delimiter, ts...); |
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| 50 | return s; |
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| 51 | } |
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| 52 | } // namespace |
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| 53 | |
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| 54 | BENCHMARK_EXPORT |
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| 55 | std::string BenchmarkName::str() const { |
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| 56 | return join(delimiter: '/', ts: function_name, ts: args, ts: min_time, ts: min_warmup_time, ts: iterations, |
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| 57 | ts: repetitions, ts: time_type, ts: threads); |
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| 58 | } |
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| 59 | } // namespace benchmark |
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| 60 | |
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