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improveJSON parser perfromance

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- unified string/stream algorithm
- templated Source class
- use char_traits integer type and conversion function for char
extraction
This commit is contained in:
Aleksandar Fabijanic
2013-06-01 16:01:46 -05:00
parent bc808cf9d4
commit 168090324a
4 changed files with 20390 additions and 384 deletions
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20024
JSON/samples/Benchmark/input.big.json Normal file
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File diff suppressed because it is too large Load Diff

57
JSON/samples/Benchmark/src/Benchmark.cpp
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@@ -48,10 +48,9 @@
int main(int argc, char** argv)
{
Poco::Stopwatch sw;
Poco::JSON::Object::Ptr obj;
std::string dir = Poco::Environment::get("POCO_BASE") + "/JSON/samples/Benchmark/";
Poco::Path filePath(dir, "input.json");
Poco::Path filePath(dir, "input.big.json");
std::ostringstream ostr;
@@ -78,36 +77,58 @@ int main(int argc, char** argv)
std::string jsonStr = ostr.str();
std::cout << "Total of " << jsonStr.size() << " bytes," << std::endl << "loaded in " << sw.elapsed() << " [us]," << std::endl;
std::cout << std::endl << "POCO JSON Parse" << std::endl;
std::cout << "---------" << std::endl;
Poco::JSON::Parser parser;
std::cout << std::endl << "POCO JSON barebone parse" << std::endl;
Poco::JSON::Parser sparser(0);
sw.restart();
parser.parse(jsonStr);
sparser.parse(jsonStr);
sw.stop();
std::cout << "parsed in " << sw.elapsed() << " [us]," << std::endl;
std::cout << "---------------------------------" << std::endl;
std::cout << "[std::string] parsed in " << sw.elapsed() << " [us]" << std::endl;
std::cout << "---------------------------------" << std::endl;
Poco::JSON::Parser iparser(0);
std::istringstream istr(jsonStr);
sw.restart();
iparser.parse(istr);
sw.stop();
std::cout << "----------------------------------------" << std::endl;
std::cout << "[std::istringstream] parsed in " << sw.elapsed() << " [us]" << std::endl;
std::cout << "----------------------------------------" << std::endl;
std::cout << std::endl << "POCO JSON Handle/Stringify" << std::endl;
std::cout << "--------------------------" << std::endl;
try
{
Poco::JSON::Parser parser;
Poco::JSON::Parser sparser;
sw.restart();
parser.parse(jsonStr);
Poco::DynamicAny result = parser.result();
sparser.parse(jsonStr);
Poco::DynamicAny result = sparser.result();
sw.stop();
std::cout << "parsed/handled in " << sw.elapsed() << " [us]," << std::endl;
if ( result.type() == typeid(Poco::JSON::Object::Ptr) )
{
obj = result.extract<Poco::JSON::Object::Ptr>();
}
std::cout << "-----------------------------------------" << std::endl;
std::cout << "[std::string] parsed/handled in " << sw.elapsed() << " [us]" << std::endl;
std::cout << "-----------------------------------------" << std::endl;
Poco::JSON::Parser isparser;
std::istringstream istr(jsonStr);
sw.restart();
isparser.parse(istr);
result = isparser.result();
sw.stop();
std::cout << "------------------------------------------------" << std::endl;
std::cout << "[std::istringstream] parsed/handled in " << sw.elapsed() << " [us]" << std::endl;
std::cout << "------------------------------------------------" << std::endl;
//Serialize to string
Poco::JSON::Object::Ptr obj;
if ( result.type() == typeid(Poco::JSON::Object::Ptr) )
obj = result.extract<Poco::JSON::Object::Ptr>();
std::ostringstream out;
sw.restart();
obj->stringify(out);
sw.stop();
std::cout << "stringified in " << sw.elapsed() << " [us]." << std::endl;
std::cout << "-----------------------------------" << std::endl;
std::cout << "stringified in " << sw.elapsed() << " [us]" << std::endl;
std::cout << "-----------------------------------" << std::endl;
std::cout << std::endl;
}
catch(Poco::JSON::JSONException jsone)