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https://github.com/nlohmann/json.git
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Reorganize directories (#3462)
* 🚚 move files * 🚚 rename doc folder to docs * 🚚 rename test folder to tests
This commit is contained in:
Niels Lohmann
GitHub
34
tests/benchmarks/CMakeLists.txt
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34
tests/benchmarks/CMakeLists.txt
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@@ -0,0 +1,34 @@
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cmake_minimum_required(VERSION 3.11)
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project(JSON_Benchmarks LANGUAGES CXX)
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# set compiler flags
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if((CMAKE_CXX_COMPILER_ID MATCHES GNU) OR (CMAKE_CXX_COMPILER_ID MATCHES Clang))
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto -DNDEBUG -O3")
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endif()
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# configure Google Benchmarks
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include(FetchContent)
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FetchContent_Declare(
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benchmark
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GIT_REPOSITORY https://github.com/google/benchmark.git
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GIT_TAG origin/main
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GIT_SHALLOW TRUE
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)
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FetchContent_GetProperties(benchmark)
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if(NOT benchmark_POPULATED)
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FetchContent_Populate(benchmark)
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set(BENCHMARK_ENABLE_TESTING OFF CACHE INTERNAL "" FORCE)
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add_subdirectory(${benchmark_SOURCE_DIR} ${benchmark_BINARY_DIR})
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endif()
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# download test data
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set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../cmake ${CMAKE_MODULE_PATH})
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include(download_test_data)
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# benchmark binary
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add_executable(json_benchmarks src/benchmarks.cpp)
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target_compile_features(json_benchmarks PRIVATE cxx_std_11)
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target_link_libraries(json_benchmarks benchmark ${CMAKE_THREAD_LIBS_INIT})
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add_dependencies(json_benchmarks download_test_data)
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target_include_directories(json_benchmarks PRIVATE ${CMAKE_SOURCE_DIR}/../../single_include ${CMAKE_BINARY_DIR}/include)
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110
tests/benchmarks/src/benchmarks.cpp
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110
tests/benchmarks/src/benchmarks.cpp
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@@ -0,0 +1,110 @@
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#include "benchmark/benchmark.h"
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#include <nlohmann/json.hpp>
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#include <fstream>
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#include <test_data.hpp>
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using json = nlohmann::json;
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//////////////////////////////////////////////////////////////////////////////
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// parse JSON from file
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//////////////////////////////////////////////////////////////////////////////
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static void ParseFile(benchmark::State& state, const char* filename)
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{
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while (state.KeepRunning())
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{
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state.PauseTiming();
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auto* f = new std::ifstream(filename);
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auto* j = new json();
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state.ResumeTiming();
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*j = json::parse(*f);
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state.PauseTiming();
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delete f;
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delete j;
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state.ResumeTiming();
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}
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std::ifstream file(filename, std::ios::binary | std::ios::ate);
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state.SetBytesProcessed(state.iterations() * file.tellg());
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}
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BENCHMARK_CAPTURE(ParseFile, jeopardy, TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json");
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BENCHMARK_CAPTURE(ParseFile, canada, TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json");
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BENCHMARK_CAPTURE(ParseFile, citm_catalog, TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json");
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BENCHMARK_CAPTURE(ParseFile, twitter, TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json");
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BENCHMARK_CAPTURE(ParseFile, floats, TEST_DATA_DIRECTORY "/regression/floats.json");
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BENCHMARK_CAPTURE(ParseFile, signed_ints, TEST_DATA_DIRECTORY "/regression/signed_ints.json");
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BENCHMARK_CAPTURE(ParseFile, unsigned_ints, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json");
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BENCHMARK_CAPTURE(ParseFile, small_signed_ints, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json");
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//////////////////////////////////////////////////////////////////////////////
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// parse JSON from string
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//////////////////////////////////////////////////////////////////////////////
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static void ParseString(benchmark::State& state, const char* filename)
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{
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std::ifstream f(filename);
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std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
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while (state.KeepRunning())
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{
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state.PauseTiming();
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auto* j = new json();
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state.ResumeTiming();
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*j = json::parse(str);
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state.PauseTiming();
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delete j;
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state.ResumeTiming();
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}
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state.SetBytesProcessed(state.iterations() * str.size());
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}
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BENCHMARK_CAPTURE(ParseString, jeopardy, TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json");
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BENCHMARK_CAPTURE(ParseString, canada, TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json");
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BENCHMARK_CAPTURE(ParseString, citm_catalog, TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json");
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BENCHMARK_CAPTURE(ParseString, twitter, TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json");
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BENCHMARK_CAPTURE(ParseString, floats, TEST_DATA_DIRECTORY "/regression/floats.json");
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BENCHMARK_CAPTURE(ParseString, signed_ints, TEST_DATA_DIRECTORY "/regression/signed_ints.json");
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BENCHMARK_CAPTURE(ParseString, unsigned_ints, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json");
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BENCHMARK_CAPTURE(ParseString, small_signed_ints, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json");
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//////////////////////////////////////////////////////////////////////////////
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// serialize JSON
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//////////////////////////////////////////////////////////////////////////////
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static void Dump(benchmark::State& state, const char* filename, int indent)
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{
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std::ifstream f(filename);
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std::string str((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
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json j = json::parse(str);
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while (state.KeepRunning())
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{
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j.dump(indent);
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}
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state.SetBytesProcessed(state.iterations() * j.dump(indent).size());
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}
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BENCHMARK_CAPTURE(Dump, jeopardy / -, TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json", -1);
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BENCHMARK_CAPTURE(Dump, jeopardy / 4, TEST_DATA_DIRECTORY "/jeopardy/jeopardy.json", 4);
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BENCHMARK_CAPTURE(Dump, canada / -, TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json", -1);
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BENCHMARK_CAPTURE(Dump, canada / 4, TEST_DATA_DIRECTORY "/nativejson-benchmark/canada.json", 4);
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BENCHMARK_CAPTURE(Dump, citm_catalog / -, TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json", -1);
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BENCHMARK_CAPTURE(Dump, citm_catalog / 4, TEST_DATA_DIRECTORY "/nativejson-benchmark/citm_catalog.json", 4);
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BENCHMARK_CAPTURE(Dump, twitter / -, TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json", -1);
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BENCHMARK_CAPTURE(Dump, twitter / 4, TEST_DATA_DIRECTORY "/nativejson-benchmark/twitter.json", 4);
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BENCHMARK_CAPTURE(Dump, floats / -, TEST_DATA_DIRECTORY "/regression/floats.json", -1);
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BENCHMARK_CAPTURE(Dump, floats / 4, TEST_DATA_DIRECTORY "/regression/floats.json", 4);
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BENCHMARK_CAPTURE(Dump, signed_ints / -, TEST_DATA_DIRECTORY "/regression/signed_ints.json", -1);
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BENCHMARK_CAPTURE(Dump, signed_ints / 4, TEST_DATA_DIRECTORY "/regression/signed_ints.json", 4);
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BENCHMARK_CAPTURE(Dump, unsigned_ints / -, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json", -1);
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BENCHMARK_CAPTURE(Dump, unsigned_ints / 4, TEST_DATA_DIRECTORY "/regression/unsigned_ints.json", 4);
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BENCHMARK_CAPTURE(Dump, small_signed_ints / -, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json", -1);
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BENCHMARK_CAPTURE(Dump, small_signed_ints / 4, TEST_DATA_DIRECTORY "/regression/small_signed_ints.json", 4);
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BENCHMARK_MAIN();
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