feat: reduce mutex waits in parallel finder
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1 changed files with 6 additions and 2 deletions
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@ -27,13 +27,17 @@ ParallelFinder::find_prefix(string_view search_term) const {
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[](const vector<string> &word_list, const string_view &search_term,
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forward_list<const string *> &result, size_t start_index,
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size_t end_index, mutex &result_mutex) {
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forward_list<const string *> thread_results;
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for (size_t index = start_index; index < end_index; ++index) {
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const auto ¤t_word = word_list[index];
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if (current_word.starts_with(search_term)) {
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const lock_guard<mutex> lock(result_mutex);
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result.push_front(¤t_word);
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thread_results.push_front(¤t_word);
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}
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}
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if (!thread_results.empty()) {
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const lock_guard<mutex> lock(result_mutex);
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result.merge(thread_results);
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}
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},
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cref(word_list_), cref(search_term), ref(result), first_word_index,
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last_word_index, ref(result_mutex));
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