88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
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#include <chrono>
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#include <sstream>
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#include "benchmark/benchmark.h"
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#include "SQLParser.h"
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#include "parser/bison_parser.h"
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#include "parser/flex_lexer.h"
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#include "benchmark_utils.h"
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// Benchmark the influence of increasing size of the query, while
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// the number of tokens remains unchanged.
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static void BM_CharacterCount(benchmark::State& st) {
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const size_t querySize = st.range(0);
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// Base query has size of 18 characters.
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std::string query = "SELECT %name% FROM test;";
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const uint pad = querySize - 18;
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const std::string filler = std::string(pad, 'a');
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query.replace(7, 6, filler);
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st.counters["num_tokens"] = getNumTokens(query);
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st.counters["num_chars"] = query.size();
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while (st.KeepRunning()) {
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hsql::SQLParserResult result;
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hsql::SQLParser::parse(query, &result);
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}
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}
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BENCHMARK(BM_CharacterCount)
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->RangeMultiplier(1 << 2)
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->Ranges({{1 << 5, 1 << 15},
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{5, 5}});
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// Benchmark the influence of increasing number of tokens, while
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// the number of characters remains unchanged.
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static void BM_ConditionalTokens(benchmark::State& st) {
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const size_t targetSize = st.range(0);
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const size_t numTokens = st.range(1);
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// Base query contains 6 tokens.
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std::string query = "SELECT * FROM test";
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// Create conditional.
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std::stringstream condStream;
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size_t missingTokens = numTokens - 4;
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if (missingTokens > 0) {
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condStream << " WHERE a";
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missingTokens -= 2;
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while (missingTokens > 0) {
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condStream << " AND a";
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missingTokens -= 2;
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}
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}
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query += condStream.str();
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if (targetSize >= query.size()) {
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const size_t pad = targetSize - query.size();
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const std::string filler = std::string(pad, 'a');
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query.replace(7, 1, filler);
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} else {
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// Query can't be the same length as in the other benchmarks.
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// Running this will result in unusable data.
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fprintf(stderr, "Too many tokens. Query too long for benchmark char limit (%lu > %lu).\n",
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query.size(), targetSize);
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return;
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}
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st.counters["num_tokens"] = getNumTokens(query);
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st.counters["num_chars"] = query.size();
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while (st.KeepRunning()) {
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hsql::SQLParserResult result;
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hsql::SQLParser::parse(query, &result);
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if (!result.isValid()) st.SkipWithError("Parsing failed!");
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}
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}
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BENCHMARK(BM_ConditionalTokens)
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->RangeMultiplier(1 << 2)
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->Ranges({{1 << 14, 1 << 14},
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{1 << 2, 1 << 11}});
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