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Copy pathdistinctuseridcompetition.cpp
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347 lines (325 loc) · 10.3 KB
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#include "simdjson/jsonparser.h"
#include <algorithm>
#include <unistd.h>
#include <vector>
#include "benchmark.h"
// #define RAPIDJSON_SSE2 // bad for performance
// #define RAPIDJSON_SSE42 // bad for performance
#include "rapidjson/document.h"
#include "rapidjson/reader.h"
#include "rapidjson/stringbuffer.h"
#include "rapidjson/writer.h"
#include "sajson.h"
using namespace rapidjson;
bool equals(const char *s1, const char *s2) { return strcmp(s1, s2) == 0; }
void remove_duplicates(std::vector<int64_t> &v) {
std::sort(v.begin(), v.end());
auto last = std::unique(v.begin(), v.end());
v.erase(last, v.end());
}
void print_vec(const std::vector<int64_t> &v) {
for (auto i : v) {
std::cout << i << " ";
}
std::cout << std::endl;
}
void simdjson_scan(std::vector<int64_t> &answer,
simdjson::ParsedJson::Iterator &i) {
while (i.move_forward()) {
if (i.get_scope_type() == '{') {
bool found_user = (i.get_string_length() == 4) &&
(memcmp(i.get_string(), "user", 4) == 0);
i.move_to_value();
if (found_user) {
if (i.is_object() && i.move_to_key("id", 2)) {
if (i.is_integer()) {
answer.push_back(i.get_integer());
}
i.up();
}
}
}
}
}
__attribute__((noinline)) std::vector<int64_t>
simdjson_just_dom(simdjson::ParsedJson &pj) {
std::vector<int64_t> answer;
simdjson::ParsedJson::Iterator i(pj);
simdjson_scan(answer, i);
remove_duplicates(answer);
return answer;
}
__attribute__((noinline)) std::vector<int64_t>
simdjson_compute_stats(const simdjson::padded_string &p) {
std::vector<int64_t> answer;
simdjson::ParsedJson pj = simdjson::build_parsed_json(p);
if (!pj.is_valid()) {
return answer;
}
simdjson::ParsedJson::Iterator i(pj);
simdjson_scan(answer, i);
remove_duplicates(answer);
return answer;
}
__attribute__((noinline)) bool
simdjson_just_parse(const simdjson::padded_string &p) {
simdjson::ParsedJson pj = simdjson::build_parsed_json(p);
bool answer = !pj.is_valid();
return answer;
}
void sajson_traverse(std::vector<int64_t> &answer, const sajson::value &node) {
using namespace sajson;
switch (node.get_type()) {
case TYPE_ARRAY: {
auto length = node.get_length();
for (size_t i = 0; i < length; ++i) {
sajson_traverse(answer, node.get_array_element(i));
}
break;
}
case TYPE_OBJECT: {
auto length = node.get_length();
// sajson has O(log n) find_object_key, but we still visit each node anyhow
// because we need to visit all values.
for (auto i = 0u; i < length; ++i) {
auto key = node.get_object_key(i); // expected: sajson::string
bool found_user =
(key.length() == 4) && (memcmp(key.data(), "user", 4) == 0);
if (found_user) { // found a user!!!
auto user_value = node.get_object_value(i); // get the value
if (user_value.get_type() ==
TYPE_OBJECT) { // the value should be an object
// now we know that we only need one value
auto user_value_length = user_value.get_length();
auto right_index =
user_value.find_object_key(sajson::string("id", 2));
if (right_index < user_value_length) {
auto v = user_value.get_object_value(right_index);
if (v.get_type() == TYPE_INTEGER) { // check that it is an integer
answer.push_back(v.get_integer_value()); // record it!
} else if (v.get_type() == TYPE_DOUBLE) {
answer.push_back((int64_t)v.get_double_value()); // record it!
}
}
}
}
sajson_traverse(answer, node.get_object_value(i));
}
break;
}
case TYPE_NULL:
case TYPE_FALSE:
case TYPE_TRUE:
case TYPE_STRING:
case TYPE_DOUBLE:
case TYPE_INTEGER:
break;
default:
assert(false && "unknown node type");
}
}
__attribute__((noinline)) std::vector<int64_t>
sasjon_just_dom(sajson::document &d) {
std::vector<int64_t> answer;
sajson_traverse(answer, d.get_root());
remove_duplicates(answer);
return answer;
}
__attribute__((noinline)) std::vector<int64_t>
sasjon_compute_stats(const simdjson::padded_string &p) {
std::vector<int64_t> answer;
char *buffer = (char *)malloc(p.size());
memcpy(buffer, p.data(), p.size());
auto d = sajson::parse(sajson::dynamic_allocation(),
sajson::mutable_string_view(p.size(), buffer));
if (!d.is_valid()) {
free(buffer);
return answer;
}
sajson_traverse(answer, d.get_root());
free(buffer);
remove_duplicates(answer);
return answer;
}
__attribute__((noinline)) bool
sasjon_just_parse(const simdjson::padded_string &p) {
char *buffer = (char *)malloc(p.size());
memcpy(buffer, p.data(), p.size());
auto d = sajson::parse(sajson::dynamic_allocation(),
sajson::mutable_string_view(p.size(), buffer));
bool answer = !d.is_valid();
free(buffer);
return answer;
}
void rapid_traverse(std::vector<int64_t> &answer, const rapidjson::Value &v) {
switch (v.GetType()) {
case kObjectType:
for (Value::ConstMemberIterator m = v.MemberBegin(); m != v.MemberEnd();
++m) {
bool found_user = (m->name.GetStringLength() == 4) &&
(memcmp(m->name.GetString(), "user", 4) == 0);
if (found_user) {
const rapidjson::Value &child = m->value;
if (child.GetType() == kObjectType) {
for (Value::ConstMemberIterator k = child.MemberBegin();
k != child.MemberEnd(); ++k) {
if (equals(k->name.GetString(), "id")) {
const rapidjson::Value &val = k->value;
if (val.GetType() == kNumberType) {
answer.push_back(val.GetInt64());
}
}
}
}
}
rapid_traverse(answer, m->value);
}
break;
case kArrayType:
for (Value::ConstValueIterator i = v.Begin(); i != v.End();
++i) { // v.Size();
rapid_traverse(answer, *i);
}
break;
case kNullType:
case kFalseType:
case kTrueType:
case kStringType:
case kNumberType:
default:
break;
}
}
__attribute__((noinline)) std::vector<int64_t>
rapid_just_dom(rapidjson::Document &d) {
std::vector<int64_t> answer;
rapid_traverse(answer, d);
remove_duplicates(answer);
return answer;
}
__attribute__((noinline)) std::vector<int64_t>
rapid_compute_stats(const simdjson::padded_string &p) {
std::vector<int64_t> answer;
char *buffer = (char *)malloc(p.size() + 1);
memcpy(buffer, p.data(), p.size());
buffer[p.size()] = '\0';
rapidjson::Document d;
d.ParseInsitu<kParseValidateEncodingFlag>(buffer);
if (d.HasParseError()) {
free(buffer);
return answer;
}
rapid_traverse(answer, d);
free(buffer);
remove_duplicates(answer);
return answer;
}
__attribute__((noinline)) bool
rapid_just_parse(const simdjson::padded_string &p) {
char *buffer = (char *)malloc(p.size() + 1);
memcpy(buffer, p.data(), p.size());
buffer[p.size()] = '\0';
rapidjson::Document d;
d.ParseInsitu<kParseValidateEncodingFlag>(buffer);
bool answer = d.HasParseError();
free(buffer);
return answer;
}
int main(int argc, char *argv[]) {
bool verbose = false;
bool just_data = false;
int c;
while ((c = getopt(argc, argv, "vt")) != -1)
switch (c) {
case 't':
just_data = true;
break;
case 'v':
verbose = true;
break;
default:
abort();
}
if (optind >= argc) {
std::cerr
<< "Using different parsers, we compute the content statistics of "
"JSON documents."
<< std::endl;
std::cerr << "Usage: " << argv[0] << " <jsonfile>" << std::endl;
std::cerr << "Or " << argv[0] << " -v <jsonfile>" << std::endl;
exit(1);
}
const char *filename = argv[optind];
if (optind + 1 < argc) {
std::cerr << "warning: ignoring everything after " << argv[optind + 1]
<< std::endl;
}
simdjson::padded_string p;
try {
simdjson::get_corpus(filename).swap(p);
} catch (const std::exception &e) { // caught by reference to base
std::cout << "Could not load the file " << filename << std::endl;
return EXIT_FAILURE;
}
if (verbose) {
std::cout << "Input has ";
if (p.size() > 1024 * 1024)
std::cout << p.size() / (1024 * 1024) << " MB ";
else if (p.size() > 1024)
std::cout << p.size() / 1024 << " KB ";
else
std::cout << p.size() << " B ";
std::cout << std::endl;
}
std::vector<int64_t> s1 = simdjson_compute_stats(p);
if (verbose) {
printf("simdjson: ");
print_vec(s1);
}
std::vector<int64_t> s2 = rapid_compute_stats(p);
if (verbose) {
printf("rapid: ");
print_vec(s2);
}
std::vector<int64_t> s3 = sasjon_compute_stats(p);
if (verbose) {
printf("sasjon: ");
print_vec(s3);
}
assert(s1 == s2);
assert(s1 == s3);
size_t size = s1.size();
int repeat = 500;
int volume = p.size();
if (just_data) {
printf(
"name cycles_per_byte cycles_per_byte_err gb_per_s gb_per_s_err \n");
}
BEST_TIME("simdjson ", simdjson_compute_stats(p).size(), size, , repeat,
volume, !just_data);
BEST_TIME("rapid ", rapid_compute_stats(p).size(), size, , repeat, volume,
!just_data);
BEST_TIME("sasjon ", sasjon_compute_stats(p).size(), size, , repeat, volume,
!just_data);
BEST_TIME("simdjson (just parse) ", simdjson_just_parse(p), false, , repeat,
volume, !just_data);
BEST_TIME("rapid (just parse) ", rapid_just_parse(p), false, , repeat,
volume, !just_data);
BEST_TIME("sasjon (just parse) ", sasjon_just_parse(p), false, , repeat,
volume, !just_data);
simdjson::ParsedJson dsimdjson = simdjson::build_parsed_json(p);
BEST_TIME("simdjson (just dom) ", simdjson_just_dom(dsimdjson).size(), size,
, repeat, volume, !just_data);
char *buffer = (char *)malloc(p.size());
memcpy(buffer, p.data(), p.size());
rapidjson::Document drapid;
drapid.ParseInsitu<kParseValidateEncodingFlag>(buffer);
BEST_TIME("rapid (just dom) ", rapid_just_dom(drapid).size(), size, , repeat,
volume, !just_data);
memcpy(buffer, p.data(), p.size());
auto dsasjon = sajson::parse(sajson::dynamic_allocation(),
sajson::mutable_string_view(p.size(), buffer));
BEST_TIME("sasjon (just dom) ", sasjon_just_dom(dsasjon).size(), size, ,
repeat, volume, !just_data);
free(buffer);
}