66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
#include "../conversion/stringbuilder.h"
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#include "../conversion/stringconversion.h"
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#include "../chrono/datetime.h"
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#include <vector>
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#include <iostream>
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#include <sstream>
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using namespace std;
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using namespace ConversionUtilities;
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using namespace ChronoUtilities;
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int main()
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{
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cout << "Benchmarking string builder vs. stringstream" << endl;
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constexpr unsigned int iterations = 500000;
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constexpr unsigned int iterations2 = 50;
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vector<string> v1, v2;
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v1.reserve(iterations);
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v2.reserve(iterations);
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DateTime t1 = DateTime::exactGmtNow();
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for(unsigned int r = 0; r < iterations2; ++r) {
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for(unsigned int i = 0; i < iterations; ++i) {
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stringstream ss;
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v1.emplace_back("left. "s + numberToString(i + 1) + "; right: "s + numberToString(i + 2) + "; top: "s + numberToString(i + 3) + "; bottom: "s + numberToString(i + 4) + ';');
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}
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v1.clear();
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}
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DateTime t2 = DateTime::exactGmtNow();
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cout << "plus operator: " << (t2 - t1).toString(TimeSpanOutputFormat::Normal, true) << endl;
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t1 = DateTime::exactGmtNow();
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for(unsigned int r = 0; r < iterations2; ++r) {
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for(unsigned int i = 0; i < iterations; ++i) {
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stringstream ss;
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ss << "left: "s << (i + 1) << "; right: "s << (i + 2) << "; top: "s << (i + 3) << "; bottom: "s << (i + 4) << ';';
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v1.emplace_back(ss.str());
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}
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v1.clear();
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}
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t2 = DateTime::exactGmtNow();
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const TimeSpan diff1 = t2 - t1;
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cout << "stringstream: " << diff1.toString(TimeSpanOutputFormat::Normal, true) << endl;
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t1 = DateTime::exactGmtNow();
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for(unsigned int r = 0; r < iterations2; ++r) {
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for(unsigned int i = 0; i < iterations; ++i) {
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v2.emplace_back("left. "s % (i + 1) % "; right: "s % (i + 2) % "; top: "s % (i + 3) % "; bottom: "s % (i + 4) + ';');
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}
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v2.clear();
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}
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t2 = DateTime::exactGmtNow();
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const TimeSpan diff2 = t2 - t1;
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cout << "string builder: " << diff2.toString(TimeSpanOutputFormat::Normal, true) << endl;
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v1.swap(v2);
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cout << "diff (stringstream minus string builder): " << (diff1 - diff2).toString(TimeSpanOutputFormat::Normal, true) << endl;
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cout << "factor (stringstream / string builder): " << (static_cast<double>(diff1.totalTicks()) / diff2.totalTicks()) << endl;
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return 0;
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}
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