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Copy pathparseandstatcompetition.cpp
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301 lines (282 loc) · 7.42 KB
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#include "simdjson/jsonparser.h"
#include <unistd.h>
#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;
using namespace std;
struct stat_s {
size_t number_count;
size_t object_count;
size_t array_count;
size_t null_count;
size_t true_count;
size_t false_count;
bool valid;
};
typedef struct stat_s stat_t;
bool stat_equal(const stat_t &s1, const stat_t &s2) {
return (s1.valid == s2.valid) && (s1.number_count == s2.number_count) &&
(s1.object_count == s2.object_count) &&
(s1.array_count == s2.array_count) &&
(s1.null_count == s2.null_count) && (s1.true_count == s2.true_count) &&
(s1.false_count == s2.false_count);
}
void print_stat(const stat_t &s) {
if (!s.valid) {
printf("invalid\n");
return;
}
printf("number: %zu object: %zu array: %zu null: %zu true: %zu false: %zu\n",
s.number_count, s.object_count, s.array_count, s.null_count,
s.true_count, s.false_count);
}
__attribute__ ((noinline))
stat_t simdjson_computestats(const std::string_view &p) {
stat_t answer;
ParsedJson pj = build_parsed_json(p);
answer.valid = pj.isValid();
if (!answer.valid) {
return answer;
}
answer.number_count = 0;
answer.object_count = 0;
answer.array_count = 0;
answer.null_count = 0;
answer.true_count = 0;
answer.false_count = 0;
size_t tapeidx = 0;
u64 tape_val = pj.tape[tapeidx++];
u8 type = (tape_val >> 56);
size_t howmany = 0;
assert(type == 'r');
howmany = tape_val & JSONVALUEMASK;
for (; tapeidx < howmany; tapeidx++) {
tape_val = pj.tape[tapeidx];
// u64 payload = tape_val & JSONVALUEMASK;
type = (tape_val >> 56);
switch (type) {
case 'l': // we have a long int
answer.number_count++;
tapeidx++; // skipping the integer
break;
case 'd': // we have a double
answer.number_count++;
tapeidx++; // skipping the double
break;
case 'n': // we have a null
answer.null_count++;
break;
case 't': // we have a true
answer.true_count++;
break;
case 'f': // we have a false
answer.false_count++;
break;
case '{': // we have an object
answer.object_count++;
break;
case '}': // we end an object
break;
case '[': // we start an array
answer.array_count++;
break;
case ']': // we end an array
break;
default:
break; // ignore
}
}
return answer;
}
// see
// https://github.com/miloyip/nativejson-benchmark/blob/master/src/tests/sajsontest.cpp
void sajson_traverse(stat_t &stats, const sajson::value &node) {
using namespace sajson;
switch (node.get_type()) {
case TYPE_NULL:
stats.null_count++;
break;
case TYPE_FALSE:
stats.false_count++;
break;
case TYPE_TRUE:
stats.true_count++;
break;
case TYPE_ARRAY: {
stats.array_count++;
auto length = node.get_length();
for (size_t i = 0; i < length; ++i) {
sajson_traverse(stats, node.get_array_element(i));
}
break;
}
case TYPE_OBJECT: {
stats.object_count++;
auto length = node.get_length();
for (auto i = 0u; i < length; ++i) {
sajson_traverse(stats, node.get_object_value(i));
}
break;
}
case TYPE_STRING:
// skip
break;
case TYPE_DOUBLE:
case TYPE_INTEGER:
stats.number_count++; // node.get_number_value();
break;
default:
assert(false && "unknown node type");
}
}
__attribute__ ((noinline))
stat_t sasjon_computestats(const std::string_view &p) {
stat_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));
answer.valid = d.is_valid();
if (!answer.valid) {
return answer;
}
answer.number_count = 0;
answer.object_count = 0;
answer.array_count = 0;
answer.null_count = 0;
answer.true_count = 0;
answer.false_count = 0;
sajson_traverse(answer, d.get_root());
free(buffer);
return answer;
}
void rapid_traverse(stat_t &stats, const rapidjson::Value &v) {
switch (v.GetType()) {
case kNullType:
stats.null_count++;
break;
case kFalseType:
stats.false_count++;
break;
case kTrueType:
stats.true_count++;
break;
case kObjectType:
for (Value::ConstMemberIterator m = v.MemberBegin(); m != v.MemberEnd();
++m) {
rapid_traverse(stats, m->value);
}
stats.object_count++;
break;
case kArrayType:
for (Value::ConstValueIterator i = v.Begin(); i != v.End();
++i) { // v.Size();
rapid_traverse(stats, *i);
}
stats.array_count++;
break;
case kStringType:
break;
case kNumberType:
stats.number_count++;
break;
}
}
__attribute__ ((noinline))
stat_t rapid_computestats(const std::string_view &p) {
stat_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);
answer.valid = !d.HasParseError();
if (!answer.valid) {
return answer;
}
answer.number_count = 0;
answer.object_count = 0;
answer.array_count = 0;
answer.null_count = 0;
answer.true_count = 0;
answer.false_count = 0;
rapid_traverse(answer, d);
free(buffer);
return answer;
}
int main(int argc, char *argv[]) {
bool verbose = false;
bool justdata = false;
int c;
while ((c = getopt(argc, argv, "vt")) != -1)
switch (c) {
case 't':
justdata = true;
break;
case 'v':
verbose = true;
break;
default:
abort();
}
if (optind >= argc) {
cerr << "Using different parsers, we compute the content statistics of "
"JSON documents.\n";
cerr << "Usage: " << argv[0] << " <jsonfile>\n";
cerr << "Or " << argv[0] << " -v <jsonfile>\n";
exit(1);
}
const char *filename = argv[optind];
if (optind + 1 < argc) {
cerr << "warning: ignoring everything after " << argv[optind + 1] << endl;
}
std::string_view p;
try {
p = get_corpus(filename);
} 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;
}
stat_t s1 = simdjson_computestats(p);
if (verbose) {
printf("simdjson: ");
print_stat(s1);
}
stat_t s2 = rapid_computestats(p);
if (verbose) {
printf("rapid: ");
print_stat(s2);
}
stat_t s3 = sasjon_computestats(p);
if (verbose) {
printf("sasjon: ");
print_stat(s3);
}
assert(stat_equal(s1, s2));
assert(stat_equal(s1, s3));
int repeat = 50;
int volume = p.size();
BEST_TIME("simdjson ", simdjson_computestats(p).valid, true, , repeat,
volume, !justdata);
BEST_TIME("RapidJSON ", rapid_computestats(p).valid, true, , repeat, volume,
!justdata);
BEST_TIME("sasjon ", sasjon_computestats(p).valid, true, , repeat, volume,
!justdata);
free((void*)p.data());
}