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#include <cassert>
#include <cstdlib>
#include <ctime>
#include <format>
#include <fstream>
#include <iostream>
#include <nlohmann/json.hpp>
#include <simdjson.h>
#include <string>
#include "twitter_data.h"
#include "nlohmann_twitter_data.h"
#include "../benchmark_utils/benchmark_helper.h"
#ifdef SIMDJSON_COMPETITION_RAPIDJSON
#include "rapidjson_twitter_data.h"
#endif
#ifdef SIMDJSON_COMPETITION_YYJSON
#include "yyjson_twitter_data.h"
#endif
#ifdef SIMDJSON_RUST_VERSION
#include "../serde-benchmark/serde_benchmark.h"
void bench_rust_parsing(const std::string &json_str) {
size_t input_volume = json_str.size();
printf("# input volume: %zu bytes\n", input_volume);
volatile bool result = true;
pretty_print(1, input_volume, "bench_rust_parsing",
bench([&json_str, &result]() {
serde_benchmark::TwitterData *td = serde_benchmark::twitter_from_str(json_str.c_str(), json_str.size());
result = (td != nullptr);
if (td) {
serde_benchmark::free_twitter(td);
}
if (!result) {
printf("parse error\n");
}
}));
}
#endif
// OPTIMIZED VERSION: Reuses parser across iterations
template <class T>
void bench_simdjson_static_reflection_parsing(const std::string &json_str) {
size_t input_volume = json_str.size();
printf("# input volume: %zu bytes\n", input_volume);
// Pre-allocate padded buffer outside the benchmark loop
simdjson::padded_string padded = simdjson::padded_string(json_str);
// CRITICAL: Create parser OUTSIDE the loop for reuse
simdjson::ondemand::parser parser;
volatile bool result = true;
pretty_print(1, input_volume, "bench_simdjson_static_reflection_parsing",
bench([&padded, &result, &parser]() {
// Reuse the same parser instance
simdjson::ondemand::document doc;
if(parser.iterate(padded).get(doc)) {
result = false;
return;
}
T my_struct;
if(doc.get<T>().get(my_struct)) {
result = false;
}
if (!result) {
printf("parse error\n");
}
}));
}
#if SIMDJSON_STATIC_REFLECTION
template <class T>
void bench_simdjson_from_parsing(const std::string &json_str) {
size_t input_volume = json_str.size();
printf("# input volume: %zu bytes\n", input_volume);
// Pre-allocate padded buffer outside the benchmark loop
simdjson::padded_string padded = simdjson::padded_string(json_str);
volatile bool result = true;
pretty_print(1, input_volume, "bench_simdjson_from_parsing",
bench([&padded, &result]() {
T my_struct;
auto err = simdjson::from(padded).get(my_struct);
if (err) {
result = false;
printf("parse error: %s\n", simdjson::error_message(err));
return;
}
}));
}
#endif
void bench_nlohmann_parsing(const std::string &json_str) {
size_t input_volume = json_str.size();
printf("# input volume: %zu bytes\n", input_volume);
volatile bool result = true;
pretty_print(1, input_volume, "bench_nlohmann_parsing",
bench([&json_str, &result]() {
try {
TwitterData data = nlohmann_deserialize(json_str);
result = true;
} catch (...) {
result = false;
printf("parse error\n");
}
}));
}
#ifdef SIMDJSON_COMPETITION_RAPIDJSON
void bench_rapidjson_parsing(const std::string &json_str) {
size_t input_volume = json_str.size();
printf("# input volume: %zu bytes\n", input_volume);
volatile bool result = true;
pretty_print(1, input_volume, "bench_rapidjson_parsing",
bench([&json_str, &result]() {
try {
TwitterData data = rapidjson_deserialize(json_str);
result = true;
} catch (...) {
result = false;
printf("parse error\n");
}
}));
}
#endif
#ifdef SIMDJSON_COMPETITION_YYJSON
void bench_yyjson_parsing(const std::string &json_str) {
size_t input_volume = json_str.size();
printf("# input volume: %zu bytes\n", input_volume);
volatile bool result = true;
pretty_print(1, input_volume, "bench_yyjson_parsing",
bench([&json_str, &result]() {
try {
TwitterData data = yyjson_deserialize(json_str);
result = true;
} catch (...) {
result = false;
printf("parse error\n");
}
}));
}
#endif
std::string read_file(std::string filename) {
printf("# Reading file %s\n", filename.c_str());
constexpr size_t read_size = 4096;
auto stream = std::ifstream(filename.c_str());
stream.exceptions(std::ios_base::badbit);
std::string out;
std::string buf(read_size, '\0');
while (stream.read(&buf[0], read_size)) {
out.append(buf, 0, size_t(stream.gcount()));
}
out.append(buf, 0, size_t(stream.gcount()));
return out;
}
// Function to check if benchmark name matches any of the comma-separated filters
bool matches_filter(const std::string& benchmark_name, const std::string& filter) {
if (filter.empty()) return true;
// Split filter by comma
size_t start = 0;
size_t end = filter.find(',');
while (end != std::string::npos) {
std::string token = filter.substr(start, end - start);
if (benchmark_name.find(token) != std::string::npos) {
return true;
}
start = end + 1;
end = filter.find(',', start);
}
// Check last token
std::string token = filter.substr(start);
return benchmark_name.find(token) != std::string::npos;
}
int main(int argc, char* argv[]) {
std::string filter;
// Parse command-line arguments
for (int i = 1; i < argc; ++i) {
if (strcmp(argv[i], "-f") == 0 || strcmp(argv[i], "--filter") == 0) {
if (i + 1 < argc) {
filter = argv[++i];
} else {
std::cerr << "Error: -f/--filter requires an argument" << std::endl;
return EXIT_FAILURE;
}
}
}
// Load the JSON data
std::string json_str = read_file(JSON_FILE);
// Benchmarking the parsing
if (matches_filter("nlohmann", filter)) {
bench_nlohmann_parsing(json_str);
}
#ifdef SIMDJSON_COMPETITION_RAPIDJSON
if (matches_filter("rapidjson", filter)) {
bench_rapidjson_parsing(json_str);
}
#endif
#ifdef SIMDJSON_COMPETITION_YYJSON
if (matches_filter("yyjson", filter)) {
bench_yyjson_parsing(json_str);
}
#endif
if (matches_filter("simdjson_static_reflection", filter)) {
bench_simdjson_static_reflection_parsing<TwitterData>(json_str);
}
#if SIMDJSON_STATIC_REFLECTION
if (matches_filter("simdjson_from", filter)) {
bench_simdjson_from_parsing<TwitterData>(json_str);
}
#endif
#ifdef SIMDJSON_RUST_VERSION
if (matches_filter("rust", filter)) {
printf("# Note: Rust/Serde parsing test\n");
bench_rust_parsing(json_str);
}
#endif
return EXIT_SUCCESS;
}
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