mirror of
https://github.com/nlohmann/json
synced 2024-11-12 23:40:05 +00:00
➕ using Google Benchmark #921
This commit is contained in:
parent
6402077ac2
commit
a8f711a2f1
@ -935,7 +935,6 @@ The library itself contains of a single header file licensed under the MIT licen
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- [**American fuzzy lop**](http://lcamtuf.coredump.cx/afl/) for fuzz testing
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- [**AppVeyor**](https://www.appveyor.com) for [continuous integration](https://ci.appveyor.com/project/nlohmann/json) on Windows
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- [**Artistic Style**](http://astyle.sourceforge.net) for automatic source code identation
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- [**benchpress**](https://github.com/sbs-ableton/benchpress) to benchmark the code
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- [**Catch**](https://github.com/philsquared/Catch) for the unit tests
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- [**Clang**](http://clang.llvm.org) for compilation with code sanitizers
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- [**Cmake**](https://cmake.org) for build automation
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@ -943,10 +942,10 @@ The library itself contains of a single header file licensed under the MIT licen
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- [**Coveralls**](https://coveralls.io) to measure [code coverage](https://coveralls.io/github/nlohmann/json)
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- [**Coverity Scan**](https://scan.coverity.com) for [static analysis](https://scan.coverity.com/projects/nlohmann-json)
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- [**cppcheck**](http://cppcheck.sourceforge.net) for static analysis
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- [**cxxopts**](https://github.com/jarro2783/cxxopts) to let benchpress parse command-line parameters
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- [**Doxygen**](http://www.stack.nl/~dimitri/doxygen/) to generate [documentation](https://nlohmann.github.io/json/)
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- [**git-update-ghpages**](https://github.com/rstacruz/git-update-ghpages) to upload the documentation to gh-pages
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- [**GitHub Changelog Generator**](https://github.com/skywinder/github-changelog-generator) to generate the [ChangeLog](https://github.com/nlohmann/json/blob/develop/ChangeLog.md)
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- [**Google Benchmark**]https://github.com/google/benchmark) to implement the benchmarks
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- [**libFuzzer**](http://llvm.org/docs/LibFuzzer.html) to implement fuzz testing for OSS-Fuzz
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- [**OSS-Fuzz**](https://github.com/google/oss-fuzz) for continuous fuzz testing of the library
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- [**Probot**](https://probot.github.io) for automating maintainer tasks such as closing stale issues, requesting missing information, or detecting toxic comments.
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26
benchmarks/CMakeLists.txt
Normal file
26
benchmarks/CMakeLists.txt
Normal file
@ -0,0 +1,26 @@
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cmake_minimum_required(VERSION 3.0)
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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 "${CMAKE_CXX_FLAGS} -std=c++11 -flto -DNDEBUG -O3")
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endif()
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# configure Google Benchmarks
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set(BENCHMARK_ENABLE_TESTING OFF CACHE INTERNAL "" FORCE)
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add_subdirectory(thirdparty/benchmark)
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# header directories
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include_directories(thirdparty)
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include_directories(${CMAKE_SOURCE_DIR}/src)
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# copy test files to build folder
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file(COPY ${CMAKE_SOURCE_DIR}/data DESTINATION .)
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file(COPY ${CMAKE_SOURCE_DIR}/../test/data/regression/floats.json
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${CMAKE_SOURCE_DIR}/../test/data/regression/unsigned_ints.json
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${CMAKE_SOURCE_DIR}/../test/data/regression/signed_ints.json
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DESTINATION data/numbers)
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# benchmark binary
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add_executable(json_benchmarks src/benchmarks.cpp)
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target_link_libraries(json_benchmarks benchmark ${CMAKE_THREAD_LIBS_INIT})
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@ -1,21 +0,0 @@
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#
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# Build/run json.hpp benchmarks, eg. CXX=g++-7 make
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#
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# The existing json_benchmarks did not allow optimization under some compilers
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#
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all: json_benchmarks json_benchmarks_simple number_jsons
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bash -c 'time ./json_benchmarks'
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bash -c 'time ./json_benchmarks_simple'
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json_benchmarks: src/benchmarks.cpp ../src/json.hpp
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$(CXX) -std=c++11 -pthread $(CXXFLAGS) -DNDEBUG -O3 -flto -I thirdparty/benchpress -I thirdparty/cxxopts -I../src src/benchmarks.cpp $(LDFLAGS) -o $@
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json_benchmarks_simple: src/benchmarks_simple.cpp ../src/json.hpp
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$(CXX) -std=c++11 $(CXXFLAGS) -DNDEBUG -O3 -flto -I../src $(<) $(LDFLAGS) -o $@
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number_jsons:
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(test -e files/numbers/floats.json -a -e files/numbers/signed_ints.json -a -e files/numbers/unsigned_ints.json) || (cd files/numbers ; python generate.py)
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clean:
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rm -f json_benchmarks json_benchmarks_simple files/numbers/*.json
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@ -1,3 +0,0 @@
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# Bechmarks
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Run `make` to compile and run a small set of benchmarks.
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@ -1,25 +0,0 @@
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#!/usr/bin/env python
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import json
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import random
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import sys
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random.seed(0)
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# floats
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result_floats = []
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for x in range(0, 1000000):
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result_floats.append(random.uniform(-100000000.0, 100000000.0))
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json.dump(result_floats, open("floats.json", "w"), indent=2)
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# unsigned integers
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result_uints = []
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for x in range(0, 1000000):
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result_uints.append(random.randint(0, 18446744073709551615))
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json.dump(result_uints, open("unsigned_ints.json", "w"), indent=2)
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# signed integers
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result_sints = []
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for x in range(0, 1000000):
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result_sints.append(random.randint(-9223372036854775808, 9223372036854775807))
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json.dump(result_sints, open("signed_ints.json", "w"), indent=2)
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@ -1,132 +1,106 @@
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#define BENCHPRESS_CONFIG_MAIN
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#include "benchmark/benchmark.h"
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#include "json.hpp"
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#include <fstream>
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#include <sstream>
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#include <benchpress.hpp>
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#include <json.hpp>
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#include <pthread.h>
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#include <thread>
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using json = nlohmann::json;
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struct StartUp
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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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StartUp()
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while (state.KeepRunning())
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{
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#ifndef __llvm__
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// pin thread to a single CPU
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cpu_set_t cpuset;
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pthread_t thread;
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thread = pthread_self();
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CPU_ZERO(&cpuset);
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CPU_SET(std::thread::hardware_concurrency() - 1, &cpuset);
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pthread_setaffinity_np(thread, sizeof(cpu_set_t), &cpuset);
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#endif
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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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};
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StartUp startup;
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enum class EMode { input, output_no_indent, output_with_indent };
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static void bench(benchpress::context& ctx,
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const std::string& in_path,
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const EMode mode)
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{
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// using string streams for benchmarking to factor-out cold-cache disk
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// access.
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#if defined( FROMFILE )
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std::ifstream istr;
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{
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istr.open( in_path, std::ifstream::in );
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// read the stream once
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json j;
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istr >> j;
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// clear flags and rewind
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istr.clear();
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istr.seekg(0);
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}
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#else
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std::stringstream istr;
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{
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// read file into string stream
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std::ifstream input_file(in_path);
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istr << input_file.rdbuf();
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input_file.close();
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// read the stream once
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json j;
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istr >> j;
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// clear flags and rewind
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istr.clear();
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istr.seekg(0);
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}
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#endif
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switch (mode)
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{
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// benchmarking input
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case EMode::input:
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{
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ctx.reset_timer();
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for (size_t i = 0; i < ctx.num_iterations(); ++i)
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{
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// clear flags and rewind
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istr.clear();
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istr.seekg(0);
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json j;
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istr >> j;
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}
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break;
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}
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// benchmarking output
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case EMode::output_no_indent:
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case EMode::output_with_indent:
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{
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// create JSON value from input
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json j;
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istr >> j;
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std::stringstream ostr;
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ctx.reset_timer();
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for (size_t i = 0; i < ctx.num_iterations(); ++i)
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{
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if (mode == EMode::output_no_indent)
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{
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ostr << j;
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}
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else
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{
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ostr << std::setw(4) << j;
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}
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// reset data
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ostr.str(std::string());
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}
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break;
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}
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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, "data/jeopardy/jeopardy.json");
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BENCHMARK_CAPTURE(ParseFile, canada, "data/nativejson-benchmark/canada.json");
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BENCHMARK_CAPTURE(ParseFile, citm_catalog, "data/nativejson-benchmark/citm_catalog.json");
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BENCHMARK_CAPTURE(ParseFile, twitter, "data/nativejson-benchmark/twitter.json");
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BENCHMARK_CAPTURE(ParseFile, floats, "data/numbers/floats.json");
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BENCHMARK_CAPTURE(ParseFile, signed_ints, "data/numbers/signed_ints.json");
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BENCHMARK_CAPTURE(ParseFile, unsigned_ints, "data/numbers/unsigned_ints.json");
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#define BENCHMARK_I(mode, title, in_path) \
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BENCHMARK((title), [](benchpress::context* ctx) \
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{ \
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bench(*ctx, (in_path), (mode)); \
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})
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BENCHMARK_I(EMode::input, "parse jeopardy.json", "files/jeopardy/jeopardy.json");
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BENCHMARK_I(EMode::input, "parse canada.json", "files/nativejson-benchmark/canada.json");
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BENCHMARK_I(EMode::input, "parse citm_catalog.json", "files/nativejson-benchmark/citm_catalog.json");
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BENCHMARK_I(EMode::input, "parse twitter.json", "files/nativejson-benchmark/twitter.json");
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BENCHMARK_I(EMode::input, "parse numbers/floats.json", "files/numbers/floats.json");
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BENCHMARK_I(EMode::input, "parse numbers/signed_ints.json", "files/numbers/signed_ints.json");
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BENCHMARK_I(EMode::input, "parse numbers/unsigned_ints.json", "files/numbers/unsigned_ints.json");
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//////////////////////////////////////////////////////////////////////////////
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// parse JSON from string
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//////////////////////////////////////////////////////////////////////////////
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BENCHMARK_I(EMode::output_no_indent, "dump jeopardy.json", "files/jeopardy/jeopardy.json");
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BENCHMARK_I(EMode::output_with_indent, "dump jeopardy.json with indent", "files/jeopardy/jeopardy.json");
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BENCHMARK_I(EMode::output_no_indent, "dump numbers/floats.json", "files/numbers/floats.json");
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BENCHMARK_I(EMode::output_no_indent, "dump numbers/signed_ints.json", "files/numbers/signed_ints.json");
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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, "data/jeopardy/jeopardy.json");
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BENCHMARK_CAPTURE(ParseString, canada, "data/nativejson-benchmark/canada.json");
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BENCHMARK_CAPTURE(ParseString, citm_catalog, "data/nativejson-benchmark/citm_catalog.json");
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BENCHMARK_CAPTURE(ParseString, twitter, "data/nativejson-benchmark/twitter.json");
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BENCHMARK_CAPTURE(ParseString, floats, "data/numbers/floats.json");
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BENCHMARK_CAPTURE(ParseString, signed_ints, "data/numbers/signed_ints.json");
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BENCHMARK_CAPTURE(ParseString, unsigned_ints, "data/numbers/unsigned_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 / -, "data/jeopardy/jeopardy.json", -1);
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BENCHMARK_CAPTURE(Dump, jeopardy / 4, "data/jeopardy/jeopardy.json", 4);
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BENCHMARK_CAPTURE(Dump, canada / -, "data/nativejson-benchmark/canada.json", -1);
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BENCHMARK_CAPTURE(Dump, canada / 4, "data/nativejson-benchmark/canada.json", 4);
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BENCHMARK_CAPTURE(Dump, citm_catalog / -, "data/nativejson-benchmark/citm_catalog.json", -1);
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BENCHMARK_CAPTURE(Dump, citm_catalog / 4, "data/nativejson-benchmark/citm_catalog.json", 4);
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BENCHMARK_CAPTURE(Dump, twitter / -, "data/nativejson-benchmark/twitter.json", -1);
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BENCHMARK_CAPTURE(Dump, twitter / 4, "data/nativejson-benchmark/twitter.json", 4);
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BENCHMARK_CAPTURE(Dump, floats / -, "data/numbers/floats.json", -1);
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BENCHMARK_CAPTURE(Dump, floats / 4, "data/numbers/floats.json", 4);
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BENCHMARK_CAPTURE(Dump, signed_ints / -, "data/numbers/signed_ints.json", -1);
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BENCHMARK_CAPTURE(Dump, signed_ints / 4, "data/numbers/signed_ints.json", 4);
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BENCHMARK_CAPTURE(Dump, unsigned_ints / -, "data/numbers/unsigned_ints.json", -1);
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BENCHMARK_CAPTURE(Dump, unsigned_ints / 4, "data/numbers/unsigned_ints.json", 4);
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BENCHMARK_MAIN();
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@ -1,158 +0,0 @@
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//
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// benchmarks_simple.cpp -- a less complex version of benchmarks.cpp, that better reflects actual performance
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//
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// For some reason, the complexity of benchmarks.cpp doesn't allow
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// the compiler to optimize code using json.hpp effectively. The
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// exact same tests, with the use of benchpress and cxxopts produces
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// much faster code, at least under g++.
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//
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#include <fstream>
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#include <iostream>
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#include <chrono>
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#include <list>
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#include <tuple>
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#include <json.hpp>
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using json = nlohmann::json;
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enum class EMode { input, output, indent };
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static double bench(const EMode mode, size_t iters, const std::string& in_path )
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{
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// using string streams for benchmarking to factor-out cold-cache disk
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// access. Define FROMFILE to use file I/O instead.
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#if defined( FROMFILE )
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std::ifstream istr;
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{
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istr.open( in_path, std::ifstream::in );
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// read the stream once
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json j;
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istr >> j;
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// clear flags and rewind
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istr.clear();
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istr.seekg(0);
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}
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#else
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std::stringstream istr;
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{
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// read file into string stream
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std::ifstream input_file(in_path);
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istr << input_file.rdbuf();
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input_file.close();
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// read the stream once
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json j;
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istr >> j;
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// clear flags and rewind
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istr.clear();
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istr.seekg(0);
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}
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#endif
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double tps = 0;
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switch (mode)
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{
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// benchmarking input
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case EMode::input:
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{
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auto start = std::chrono::system_clock::now();
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for (size_t i = 0; i < iters; ++i)
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{
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// clear flags and rewind
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istr.clear();
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istr.seekg(0);
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json j;
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istr >> j;
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}
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auto ended = std::chrono::system_clock::now();
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tps = 1.0 / std::chrono::duration<double>( ended - start ).count();
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break;
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}
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// benchmarking output
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case EMode::output:
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case EMode::indent:
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{
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// create JSON value from input
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json j;
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istr >> j;
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std::stringstream ostr;
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auto start = std::chrono::system_clock::now();
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for (size_t i = 0; i < iters; ++i)
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{
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if (mode == EMode::indent)
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{
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ostr << j;
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}
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else
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{
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ostr << std::setw(4) << j;
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}
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// reset data
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ostr.str(std::string());
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}
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auto ended = std::chrono::system_clock::now();
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tps = 1.0 / std::chrono::duration<double>( ended - start ).count();
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break;
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}
|
||||
}
|
||||
return tps;
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
struct average {
|
||||
T _sum { 0 };
|
||||
size_t _count { 0 };
|
||||
T operator+=( const T &val_ ) { _sum += val_; +_count++; return val_; }
|
||||
operator T() { return _sum / _count; }
|
||||
};
|
||||
|
||||
// Execute each test approximately enough times to get near 1
|
||||
// transaction per second, and compute the average; a single aggregate
|
||||
// number that gives a performance metric representing both parsing
|
||||
// and output.
|
||||
|
||||
int main( int, char ** )
|
||||
{
|
||||
std::list<std::tuple<std::string, EMode, size_t, std::string>> tests {
|
||||
{ "parse jeopardy.json", EMode::input, 2, "files/jeopardy/jeopardy.json" },
|
||||
{ "parse canada.json", EMode::input, 30, "files/nativejson-benchmark/canada.json" },
|
||||
{ "parse citm_catalog.json", EMode::input, 120, "files/nativejson-benchmark/citm_catalog.json" },
|
||||
{ "parse twitter.json", EMode::input, 225, "files/nativejson-benchmark/twitter.json" },
|
||||
{ "parse floats.json", EMode::input, 5, "files/numbers/floats.json" },
|
||||
{ "parse signed_ints.json", EMode::input, 6, "files/numbers/signed_ints.json" },
|
||||
{ "parse unsigned_ints.json", EMode::input, 6, "files/numbers/unsigned_ints.json" },
|
||||
{ "dump jeopardy.json", EMode::output, 5, "files/jeopardy/jeopardy.json" },
|
||||
{ "dump jeopardy.json w/ind.", EMode::indent, 5, "files/jeopardy/jeopardy.json" },
|
||||
{ "dump floats.json", EMode::output, 2, "files/numbers/floats.json" },
|
||||
{ "dump signed_ints.json", EMode::output, 20, "files/numbers/signed_ints.json" },
|
||||
};
|
||||
|
||||
average<double> avg;
|
||||
for ( auto t : tests ) {
|
||||
std::string name, path;
|
||||
EMode mode;
|
||||
size_t iters;
|
||||
std::tie(name, mode, iters, path) = t;
|
||||
auto tps = bench( mode, iters, path );
|
||||
avg += tps;
|
||||
std::cout
|
||||
<< std::left
|
||||
<< std::setw( 30 ) << name
|
||||
<< std::right
|
||||
<< " x " << std::setw( 3 ) << iters
|
||||
<< std::left
|
||||
<< " == " << std::setw( 10 ) << tps
|
||||
<< std::right
|
||||
<< " TPS, " << std::setw( 8 ) << std::round( tps * 1e6 / iters )
|
||||
<< " ms/op"
|
||||
<< std::endl;
|
||||
}
|
||||
std::cout << std::setw( 40 ) << "" << std::string( 10, '-' ) << std::endl;
|
||||
std::cout << std::setw( 40 ) << "" << std::setw( 10 ) << std::left << avg << " TPS Average" << std::endl;
|
||||
return 0;
|
||||
}
|
21
benchmarks/thirdparty/benchpress/LICENSE
vendored
21
benchmarks/thirdparty/benchpress/LICENSE
vendored
@ -1,21 +0,0 @@
|
||||
The MIT License (MIT)
|
||||
|
||||
Copyright (c) 2014 Christopher Gilbert
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
401
benchmarks/thirdparty/benchpress/benchpress.hpp
vendored
401
benchmarks/thirdparty/benchpress/benchpress.hpp
vendored
@ -1,401 +0,0 @@
|
||||
/*
|
||||
* Copyright (C) 2015 Christopher Gilbert.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#ifndef BENCHPRESS_HPP
|
||||
#define BENCHPRESS_HPP
|
||||
|
||||
#include <algorithm> // max, min
|
||||
#include <atomic> // atomic_intmax_t
|
||||
#include <chrono> // high_resolution_timer, duration
|
||||
#include <functional> // function
|
||||
#include <iomanip> // setw
|
||||
#include <iostream> // cout
|
||||
#include <regex> // regex, regex_match
|
||||
#include <sstream> // stringstream
|
||||
#include <string> // string
|
||||
#include <thread> // thread
|
||||
#include <vector> // vector
|
||||
|
||||
namespace benchpress {
|
||||
|
||||
/*
|
||||
* The options class encapsulates all options for running benchmarks.
|
||||
*
|
||||
* When including benchpress, a main function can be emitted which includes a command-line parser for building an
|
||||
* options object. However from time-to-time it may be necessary for the developer to have to build their own main
|
||||
* stub and construct the options object manually.
|
||||
*
|
||||
* options opts;
|
||||
* opts
|
||||
* .bench(".*")
|
||||
* .benchtime(1)
|
||||
* .cpu(4);
|
||||
*/
|
||||
class options {
|
||||
std::string d_bench;
|
||||
size_t d_benchtime;
|
||||
size_t d_cpu;
|
||||
public:
|
||||
options()
|
||||
: d_bench(".*")
|
||||
, d_benchtime(1)
|
||||
, d_cpu(std::thread::hardware_concurrency())
|
||||
{}
|
||||
options& bench(const std::string& bench) {
|
||||
d_bench = bench;
|
||||
return *this;
|
||||
}
|
||||
options& benchtime(size_t benchtime) {
|
||||
d_benchtime = benchtime;
|
||||
return *this;
|
||||
}
|
||||
options& cpu(size_t cpu) {
|
||||
d_cpu = cpu;
|
||||
return *this;
|
||||
}
|
||||
std::string get_bench() const {
|
||||
return d_bench;
|
||||
}
|
||||
size_t get_benchtime() const {
|
||||
return d_benchtime;
|
||||
}
|
||||
size_t get_cpu() const {
|
||||
return d_cpu;
|
||||
}
|
||||
};
|
||||
|
||||
class context;
|
||||
|
||||
/*
|
||||
* The benchmark_info class is used to store a function name / pointer pair.
|
||||
*
|
||||
* benchmark_info bi("example", [](benchpress::context* b) {
|
||||
* // benchmark function
|
||||
* });
|
||||
*/
|
||||
class benchmark_info {
|
||||
std::string d_name;
|
||||
std::function<void(context*)> d_func;
|
||||
|
||||
public:
|
||||
benchmark_info(std::string name, std::function<void(context*)> func)
|
||||
: d_name(name)
|
||||
, d_func(func)
|
||||
{}
|
||||
|
||||
std::string get_name() const { return d_name; }
|
||||
std::function<void(context*)> get_func() const { return d_func; }
|
||||
};
|
||||
|
||||
/*
|
||||
* The registration class is responsible for providing a single global point of reference for registering
|
||||
* benchmark functions.
|
||||
*
|
||||
* registration::get_ptr()->register_benchmark(info);
|
||||
*/
|
||||
class registration {
|
||||
static registration* d_this;
|
||||
std::vector<benchmark_info> d_benchmarks;
|
||||
|
||||
public:
|
||||
static registration* get_ptr() {
|
||||
if (nullptr == d_this) {
|
||||
d_this = new registration();
|
||||
}
|
||||
return d_this;
|
||||
}
|
||||
|
||||
void register_benchmark(benchmark_info& info) {
|
||||
d_benchmarks.push_back(info);
|
||||
}
|
||||
|
||||
std::vector<benchmark_info> get_benchmarks() { return d_benchmarks; }
|
||||
};
|
||||
|
||||
/*
|
||||
* The auto_register class is a helper used to register benchmarks.
|
||||
*/
|
||||
class auto_register {
|
||||
public:
|
||||
auto_register(const std::string& name, std::function<void(context*)> func) {
|
||||
benchmark_info info(name, func);
|
||||
registration::get_ptr()->register_benchmark(info);
|
||||
}
|
||||
};
|
||||
|
||||
#define CONCAT(x, y) x ## y
|
||||
#define CONCAT2(x, y) CONCAT(x, y)
|
||||
|
||||
// The BENCHMARK macro is a helper for creating benchmark functions and automatically registering them with the
|
||||
// registration class.
|
||||
#define BENCHMARK(x, f) benchpress::auto_register CONCAT2(register_, __LINE__)((x), (f));
|
||||
|
||||
// This macro will prevent the compiler from removing a redundant code path which has no side-effects.
|
||||
#define DISABLE_REDUNDANT_CODE_OPT() { asm(""); }
|
||||
|
||||
/*
|
||||
* The result class is responsible for producing a printable string representation of a benchmark run.
|
||||
*/
|
||||
class result {
|
||||
size_t d_num_iterations;
|
||||
std::chrono::nanoseconds d_duration;
|
||||
size_t d_num_bytes;
|
||||
|
||||
public:
|
||||
result(size_t num_iterations, std::chrono::nanoseconds duration, size_t num_bytes)
|
||||
: d_num_iterations(num_iterations)
|
||||
, d_duration(duration)
|
||||
, d_num_bytes(num_bytes)
|
||||
{}
|
||||
|
||||
size_t get_ns_per_op() const {
|
||||
if (d_num_iterations <= 0) {
|
||||
return 0;
|
||||
}
|
||||
return d_duration.count() / d_num_iterations;
|
||||
}
|
||||
|
||||
double get_mb_per_s() const {
|
||||
if (d_num_iterations <= 0 || d_duration.count() <= 0 || d_num_bytes <= 0) {
|
||||
return 0;
|
||||
}
|
||||
return ((double(d_num_bytes) * double(d_num_iterations) / double(1e6)) /
|
||||
double(std::chrono::duration_cast<std::chrono::seconds>(d_duration).count()));
|
||||
}
|
||||
|
||||
std::string to_string() const {
|
||||
std::stringstream tmp;
|
||||
tmp << std::setw(12) << std::right << d_num_iterations;
|
||||
size_t npo = get_ns_per_op();
|
||||
tmp << std::setw(12) << std::right << npo << std::setw(0) << " ns/op";
|
||||
double mbs = get_mb_per_s();
|
||||
if (mbs > 0.0) {
|
||||
tmp << std::setw(12) << std::right << mbs << std::setw(0) << " MB/s";
|
||||
}
|
||||
return std::string(tmp.str());
|
||||
}
|
||||
};
|
||||
|
||||
/*
|
||||
* The parallel_context class is responsible for providing a thread-safe context for parallel benchmark code.
|
||||
*/
|
||||
class parallel_context {
|
||||
std::atomic_intmax_t d_num_iterations;
|
||||
public:
|
||||
parallel_context(size_t num_iterations)
|
||||
: d_num_iterations(num_iterations)
|
||||
{}
|
||||
|
||||
bool next() {
|
||||
return (d_num_iterations.fetch_sub(1) > 0);
|
||||
}
|
||||
};
|
||||
|
||||
/*
|
||||
* The context class is responsible for providing an interface for capturing benchmark metrics to benchmark functions.
|
||||
*/
|
||||
class context {
|
||||
bool d_timer_on;
|
||||
std::chrono::high_resolution_clock::time_point d_start;
|
||||
std::chrono::nanoseconds d_duration;
|
||||
std::chrono::seconds d_benchtime;
|
||||
size_t d_num_iterations;
|
||||
size_t d_num_threads;
|
||||
size_t d_num_bytes;
|
||||
benchmark_info d_benchmark;
|
||||
|
||||
public:
|
||||
context(const benchmark_info& info, const options& opts)
|
||||
: d_timer_on(false)
|
||||
, d_start()
|
||||
, d_duration()
|
||||
, d_benchtime(std::chrono::seconds(opts.get_benchtime()))
|
||||
, d_num_iterations(1)
|
||||
, d_num_threads(opts.get_cpu())
|
||||
, d_num_bytes(0)
|
||||
, d_benchmark(info)
|
||||
{}
|
||||
|
||||
size_t num_iterations() const { return d_num_iterations; }
|
||||
|
||||
void set_num_threads(size_t n) { d_num_threads = n; }
|
||||
size_t num_threads() const { return d_num_threads; }
|
||||
|
||||
void start_timer() {
|
||||
if (!d_timer_on) {
|
||||
d_start = std::chrono::high_resolution_clock::now();
|
||||
d_timer_on = true;
|
||||
}
|
||||
}
|
||||
void stop_timer() {
|
||||
if (d_timer_on) {
|
||||
d_duration += std::chrono::high_resolution_clock::now() - d_start;
|
||||
d_timer_on = false;
|
||||
}
|
||||
}
|
||||
void reset_timer() {
|
||||
if (d_timer_on) {
|
||||
d_start = std::chrono::high_resolution_clock::now();
|
||||
}
|
||||
d_duration = std::chrono::nanoseconds::zero();
|
||||
}
|
||||
|
||||
void set_bytes(int64_t bytes) { d_num_bytes = bytes; }
|
||||
|
||||
size_t get_ns_per_op() {
|
||||
if (d_num_iterations <= 0) {
|
||||
return 0;
|
||||
}
|
||||
return d_duration.count() / d_num_iterations;
|
||||
}
|
||||
|
||||
void run_n(size_t n) {
|
||||
d_num_iterations = n;
|
||||
reset_timer();
|
||||
start_timer();
|
||||
d_benchmark.get_func()(this);
|
||||
stop_timer();
|
||||
}
|
||||
|
||||
void run_parallel(std::function<void(parallel_context*)> f) {
|
||||
parallel_context pc(d_num_iterations);
|
||||
std::vector<std::thread> threads;
|
||||
for (size_t i = 0; i < d_num_threads; ++i) {
|
||||
threads.push_back(std::thread([&pc,&f]() -> void {
|
||||
f(&pc);
|
||||
}));
|
||||
}
|
||||
for(auto& thread : threads){
|
||||
thread.join();
|
||||
}
|
||||
}
|
||||
|
||||
result run() {
|
||||
size_t n = 1;
|
||||
run_n(n);
|
||||
while (d_duration < d_benchtime && n < 1e9) {
|
||||
size_t last = n;
|
||||
if (get_ns_per_op() == 0) {
|
||||
n = 1e9;
|
||||
} else {
|
||||
n = d_duration.count() / get_ns_per_op();
|
||||
}
|
||||
n = std::max(std::min(n+n/2, 100*last), last+1);
|
||||
n = round_up(n);
|
||||
run_n(n);
|
||||
}
|
||||
return result(n, d_duration, d_num_bytes);
|
||||
}
|
||||
|
||||
private:
|
||||
template<typename T>
|
||||
T round_down_10(T n) {
|
||||
int tens = 0;
|
||||
while (n > 10) {
|
||||
n /= 10;
|
||||
tens++;
|
||||
}
|
||||
int result = 1;
|
||||
for (int i = 0; i < tens; ++i) {
|
||||
result *= 10;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
template<typename T>
|
||||
T round_up(T n) {
|
||||
T base = round_down_10(n);
|
||||
if (n < (2 * base)) {
|
||||
return 2 * base;
|
||||
}
|
||||
if (n < (5 * base)) {
|
||||
return 5 * base;
|
||||
}
|
||||
return 10 * base;
|
||||
}
|
||||
};
|
||||
|
||||
/*
|
||||
* The run_benchmarks function will run the registered benchmarks.
|
||||
*/
|
||||
void run_benchmarks(const options& opts) {
|
||||
std::regex match_r(opts.get_bench());
|
||||
auto benchmarks = registration::get_ptr()->get_benchmarks();
|
||||
for (auto& info : benchmarks) {
|
||||
if (std::regex_match(info.get_name(), match_r)) {
|
||||
context c(info, opts);
|
||||
auto r = c.run();
|
||||
std::cout << std::setw(35) << std::left << info.get_name() << r.to_string() << std::endl;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace benchpress
|
||||
|
||||
/*
|
||||
* If BENCHPRESS_CONFIG_MAIN is defined when the file is included then a main function will be emitted which provides a
|
||||
* command-line parser and then executes run_benchmarks.
|
||||
*/
|
||||
#ifdef BENCHPRESS_CONFIG_MAIN
|
||||
#include "cxxopts.hpp"
|
||||
benchpress::registration* benchpress::registration::d_this;
|
||||
int main(int argc, char** argv) {
|
||||
std::chrono::high_resolution_clock::time_point bp_start = std::chrono::high_resolution_clock::now();
|
||||
benchpress::options bench_opts;
|
||||
try {
|
||||
cxxopts::Options cmd_opts(argv[0], " - command line options");
|
||||
cmd_opts.add_options()
|
||||
("bench", "run benchmarks matching the regular expression", cxxopts::value<std::string>()
|
||||
->default_value(".*"))
|
||||
("benchtime", "run enough iterations of each benchmark to take t seconds", cxxopts::value<size_t>()
|
||||
->default_value("1"))
|
||||
("cpu", "specify the number of threads to use for parallel benchmarks", cxxopts::value<size_t>()
|
||||
->default_value(std::to_string(std::thread::hardware_concurrency())))
|
||||
("help", "print help")
|
||||
;
|
||||
cmd_opts.parse(argc, argv);
|
||||
if (cmd_opts.count("help")) {
|
||||
std::cout << cmd_opts.help({""}) << std::endl;
|
||||
exit(0);
|
||||
}
|
||||
if (cmd_opts.count("bench")) {
|
||||
bench_opts.bench(cmd_opts["bench"].as<std::string>());
|
||||
}
|
||||
if (cmd_opts.count("benchtime")) {
|
||||
bench_opts.benchtime(cmd_opts["benchtime"].as<size_t>());
|
||||
}
|
||||
if (cmd_opts.count("cpu")) {
|
||||
bench_opts.cpu(cmd_opts["cpu"].as<size_t>());
|
||||
}
|
||||
} catch (const cxxopts::OptionException& e) {
|
||||
std::cout << "error parsing options: " << e.what() << std::endl;
|
||||
exit(1);
|
||||
}
|
||||
benchpress::run_benchmarks(bench_opts);
|
||||
float duration = std::chrono::duration_cast<std::chrono::milliseconds>(
|
||||
std::chrono::high_resolution_clock::now() - bp_start
|
||||
).count() / 1000.f;
|
||||
std::cout << argv[0] << " " << duration << "s" << std::endl;
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif // BENCHPRESS_HPP
|
19
benchmarks/thirdparty/cxxopts/LICENSE
vendored
19
benchmarks/thirdparty/cxxopts/LICENSE
vendored
@ -1,19 +0,0 @@
|
||||
Copyright (c) 2014 Jarryd Beck
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in
|
||||
all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
THE SOFTWARE.
|
1312
benchmarks/thirdparty/cxxopts/cxxopts.hpp
vendored
1312
benchmarks/thirdparty/cxxopts/cxxopts.hpp
vendored
File diff suppressed because it is too large
Load Diff
@ -7247,7 +7247,7 @@ class basic_json
|
||||
// wrapper to get a value for an operation
|
||||
const auto get_value = [&val](const std::string & op,
|
||||
const std::string & member,
|
||||
bool string_type) -> basic_json&
|
||||
bool string_type) -> basic_json &
|
||||
{
|
||||
// find value
|
||||
auto it = val.m_value.object->find(member);
|
||||
|
@ -14535,7 +14535,7 @@ class basic_json
|
||||
// wrapper to get a value for an operation
|
||||
const auto get_value = [&val](const std::string & op,
|
||||
const std::string & member,
|
||||
bool string_type) -> basic_json&
|
||||
bool string_type) -> basic_json &
|
||||
{
|
||||
// find value
|
||||
auto it = val.m_value.object->find(member);
|
||||
|
@ -316,8 +316,8 @@ TEST_CASE("object inspection")
|
||||
SECTION("round trips")
|
||||
{
|
||||
for (const auto& s :
|
||||
{"3.141592653589793", "1000000000000000010E5"
|
||||
})
|
||||
{"3.141592653589793", "1000000000000000010E5"
|
||||
})
|
||||
{
|
||||
json j1 = json::parse(s);
|
||||
std::string s1 = j1.dump();
|
||||
|
Loading…
Reference in New Issue
Block a user