310 lines
7.8 KiB
C++
310 lines
7.8 KiB
C++
#include "simdjson/jsonparser.h"
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#include <unistd.h>
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#include "benchmark.h"
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// #define RAPIDJSON_SSE2 // bad for performance
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// #define RAPIDJSON_SSE42 // bad for performance
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#include "rapidjson/document.h"
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#include "rapidjson/reader.h"
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#include "rapidjson/stringbuffer.h"
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#include "rapidjson/writer.h"
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#include "sajson.h"
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using namespace rapidjson;
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using namespace simdjson;
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struct stat_s {
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size_t number_count;
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size_t object_count;
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size_t array_count;
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size_t null_count;
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size_t true_count;
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size_t false_count;
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bool valid;
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};
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typedef struct stat_s stat_t;
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bool stat_equal(const stat_t &s1, const stat_t &s2) {
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return (s1.valid == s2.valid) && (s1.number_count == s2.number_count) &&
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(s1.object_count == s2.object_count) &&
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(s1.array_count == s2.array_count) &&
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(s1.null_count == s2.null_count) && (s1.true_count == s2.true_count) &&
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(s1.false_count == s2.false_count);
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}
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void print_stat(const stat_t &s) {
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if (!s.valid) {
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printf("invalid\n");
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return;
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}
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printf("number: %zu object: %zu array: %zu null: %zu true: %zu false: %zu\n",
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s.number_count, s.object_count, s.array_count, s.null_count,
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s.true_count, s.false_count);
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}
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__attribute__((noinline)) stat_t
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simdjson_compute_stats(const simdjson::padded_string &p) {
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stat_t answer;
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simdjson::ParsedJson pj = build_parsed_json(p);
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answer.valid = pj.is_valid();
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if (!answer.valid) {
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return answer;
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}
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answer.number_count = 0;
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answer.object_count = 0;
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answer.array_count = 0;
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answer.null_count = 0;
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answer.true_count = 0;
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answer.false_count = 0;
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size_t tape_idx = 0;
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uint64_t tape_val = pj.tape[tape_idx++];
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uint8_t type = (tape_val >> 56);
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size_t how_many = 0;
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assert(type == 'r');
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how_many = tape_val & JSON_VALUE_MASK;
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for (; tape_idx < how_many; tape_idx++) {
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tape_val = pj.tape[tape_idx];
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// uint64_t payload = tape_val & JSON_VALUE_MASK;
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type = (tape_val >> 56);
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switch (type) {
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case 'l': // we have a long int
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answer.number_count++;
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tape_idx++; // skipping the integer
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break;
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case 'u': // we have a long uint
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answer.number_count++;
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tape_idx++; // skipping the unsigned integer
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break;
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case 'd': // we have a double
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answer.number_count++;
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tape_idx++; // skipping the double
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break;
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case 'n': // we have a null
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answer.null_count++;
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break;
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case 't': // we have a true
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answer.true_count++;
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break;
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case 'f': // we have a false
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answer.false_count++;
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break;
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case '{': // we have an object
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answer.object_count++;
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break;
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case '}': // we end an object
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break;
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case '[': // we start an array
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answer.array_count++;
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break;
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case ']': // we end an array
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break;
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default:
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break; // ignore
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}
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}
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return answer;
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}
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// see
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// https://github.com/miloyip/nativejson-benchmark/blob/master/src/tests/sajsontest.cpp
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void sajson_traverse(stat_t &stats, const sajson::value &node) {
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using namespace sajson;
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switch (node.get_type()) {
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case TYPE_NULL:
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stats.null_count++;
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break;
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case TYPE_FALSE:
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stats.false_count++;
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break;
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case TYPE_TRUE:
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stats.true_count++;
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break;
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case TYPE_ARRAY: {
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stats.array_count++;
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auto length = node.get_length();
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for (size_t i = 0; i < length; ++i) {
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sajson_traverse(stats, node.get_array_element(i));
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}
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break;
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}
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case TYPE_OBJECT: {
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stats.object_count++;
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auto length = node.get_length();
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for (auto i = 0u; i < length; ++i) {
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sajson_traverse(stats, node.get_object_value(i));
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}
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break;
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}
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case TYPE_STRING:
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// skip
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break;
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case TYPE_DOUBLE:
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case TYPE_INTEGER:
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stats.number_count++; // node.get_number_value();
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break;
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default:
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assert(false && "unknown node type");
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}
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}
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__attribute__((noinline)) stat_t
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sasjon_compute_stats(const simdjson::padded_string &p) {
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stat_t answer;
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char *buffer = (char *)malloc(p.size());
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memcpy(buffer, p.data(), p.size());
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auto d = sajson::parse(sajson::dynamic_allocation(),
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sajson::mutable_string_view(p.size(), buffer));
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answer.valid = d.is_valid();
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if (!answer.valid) {
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return answer;
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}
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answer.number_count = 0;
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answer.object_count = 0;
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answer.array_count = 0;
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answer.null_count = 0;
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answer.true_count = 0;
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answer.false_count = 0;
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sajson_traverse(answer, d.get_root());
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free(buffer);
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return answer;
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}
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void rapid_traverse(stat_t &stats, const rapidjson::Value &v) {
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switch (v.GetType()) {
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case kNullType:
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stats.null_count++;
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break;
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case kFalseType:
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stats.false_count++;
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break;
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case kTrueType:
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stats.true_count++;
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break;
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case kObjectType:
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for (Value::ConstMemberIterator m = v.MemberBegin(); m != v.MemberEnd();
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++m) {
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rapid_traverse(stats, m->value);
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}
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stats.object_count++;
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break;
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case kArrayType:
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for (Value::ConstValueIterator i = v.Begin(); i != v.End();
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++i) { // v.Size();
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rapid_traverse(stats, *i);
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}
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stats.array_count++;
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break;
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case kStringType:
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break;
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case kNumberType:
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stats.number_count++;
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break;
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}
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}
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__attribute__((noinline)) stat_t
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rapid_compute_stats(const simdjson::padded_string &p) {
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stat_t answer;
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char *buffer = (char *)malloc(p.size() + 1);
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memcpy(buffer, p.data(), p.size());
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buffer[p.size()] = '\0';
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rapidjson::Document d;
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d.ParseInsitu<kParseValidateEncodingFlag>(buffer);
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answer.valid = !d.HasParseError();
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if (!answer.valid) {
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return answer;
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}
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answer.number_count = 0;
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answer.object_count = 0;
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answer.array_count = 0;
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answer.null_count = 0;
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answer.true_count = 0;
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answer.false_count = 0;
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rapid_traverse(answer, d);
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free(buffer);
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return answer;
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}
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int main(int argc, char *argv[]) {
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bool verbose = false;
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bool just_data = false;
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int c;
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while ((c = getopt(argc, argv, "vt")) != -1)
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switch (c) {
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case 't':
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just_data = true;
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break;
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case 'v':
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verbose = true;
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break;
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default:
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abort();
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}
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if (optind >= argc) {
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std::cerr
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<< "Using different parsers, we compute the content statistics of "
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"JSON documents."
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<< std::endl;
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std::cerr << "Usage: " << argv[0] << " <jsonfile>" << std::endl;
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std::cerr << "Or " << argv[0] << " -v <jsonfile>" << std::endl;
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exit(1);
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}
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const char *filename = argv[optind];
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if (optind + 1 < argc) {
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std::cerr << "warning: ignoring everything after " << argv[optind + 1]
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<< std::endl;
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}
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simdjson::padded_string p;
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try {
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simdjson::get_corpus(filename).swap(p);
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} catch (const std::exception &e) { // caught by reference to base
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std::cout << "Could not load the file " << filename << std::endl;
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return EXIT_FAILURE;
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}
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if (verbose) {
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std::cout << "Input has ";
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if (p.size() > 1024 * 1024)
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std::cout << p.size() / (1024 * 1024) << " MB ";
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else if (p.size() > 1024)
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std::cout << p.size() / 1024 << " KB ";
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else
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std::cout << p.size() << " B ";
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std::cout << std::endl;
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}
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stat_t s1 = simdjson_compute_stats(p);
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if (verbose) {
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printf("simdjson: ");
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print_stat(s1);
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}
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stat_t s2 = rapid_compute_stats(p);
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if (verbose) {
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printf("rapid: ");
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print_stat(s2);
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}
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stat_t s3 = sasjon_compute_stats(p);
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if (verbose) {
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printf("sasjon: ");
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print_stat(s3);
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}
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assert(stat_equal(s1, s2));
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assert(stat_equal(s1, s3));
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int repeat = 50;
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int volume = p.size();
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if (just_data) {
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printf("name cycles_per_byte cycles_per_byte_err gb_per_s gb_per_s_err \n");
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}
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BEST_TIME("simdjson ", simdjson_compute_stats(p).valid, true, , repeat,
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volume, !just_data);
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BEST_TIME("RapidJSON ", rapid_compute_stats(p).valid, true, , repeat, volume,
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!just_data);
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BEST_TIME("sasjon ", sasjon_compute_stats(p).valid, true, , repeat, volume,
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!just_data);
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}
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