mumble/src/tests/Collections.cpp

#include <QtCore>
#include <vector>

#include "Timer.h"

using namespace std;

#define SL 10000
#define NE 300

template<class T>
class QListSet {
	public:
		QList<T> l;
		void insert(const T &i) {
			if (! l.contains(i))
				l.append(i);
		}
		void remove(const T &i) {
			l.removeAll(i);
		}
};

int main(int argc, char **argv) {
	Timer t;
	quint64 usins, usiter;
	int sum;

	{
		t.restart();
		QSet<int> s;
		s.reserve(NE);
		for (int i=0;i<NE;i++)
			s.insert(i);
		usins = t.restart();
		sum = 0;
		for (int j=0;j<SL;j++)
			foreach(int v, s)
				sum += v;
		usiter = t.restart();
	}
	qWarning("QSet: %lldus insert, %lldus iterate: %d", usins, usiter, sum);

	{
		t.restart();
		QList<int> s;
		for (int i=0;i<NE;i++)
			s.append(i);
		usins = t.restart();
		sum = 0;
		for (int j=0;j<SL;j++)
			foreach(int v, s)
				sum += v;
		usiter = t.restart();
	}
	qWarning("QList: %lldus insert, %lldus iterate: %d", usins, usiter, sum);

	{
		t.restart();
		QVector<int> s;
		s.reserve(NE);
		for (int i=0;i<NE;i++)
			s.append(i);
		usins = t.restart();
		sum = 0;
		for (int j=0;j<SL;j++)
			foreach(int v, s)
				sum += v;
		usiter = t.restart();
	}
	qWarning("QVector: %lldus insert, %lldus iterate: %d", usins, usiter, sum);

	{
		t.restart();
		vector<int> s;
		for (int i=0;i<NE;i++)
			s.push_back(i);
		usins = t.restart();
		sum = 0;
		int sz = s.size();
		for (int j=0;j<SL;j++)
			for (int i=0;i<sz;i++)
				sum += s[i];
		usiter = t.restart();
	}
	qWarning("std::vector: %lldus insert, %lldus iterate: %d", usins, usiter, sum);

	{
		t.restart();
		int s[NE];
		for (int i=0;i<NE;i++)
			s[i]=i;
		usins = t.restart();
		sum = 0;
		for (int j=0;j<SL;j++)
			for (int i=0;i<NE;i++)
				sum += s[i];
		usiter = t.restart();
	}
	qWarning("c99 alloc: %lldus insert, %lldus iterate: %d", usins, usiter, sum);


	{
		t.restart();
		QListSet<int> s;
		for (int i=0;i<NE;i++)
			s.insert(i);
		usins = t.restart();
		sum = 0;
		for (int j=0;j<SL;j++)
			foreach(int v, s.l)
				sum += v;
		usiter = t.restart();
	}
	qWarning("QListSet: %lldus insert, %lldus iterate: %d", usins, usiter, sum);
}