mumble/src/tests/Emit.cpp

#include <QtCore>
#include <boost/signals.hpp>
#include <boost/bind.hpp>
#include "Timer.h"

class Slotter : public QObject {
		Q_OBJECT;
	public:
		Slotter(QObject *p = nullptr) : QObject(p) {};
	public Q_SLOTS:
		virtual void slottest(int &res) {
			res+= 1;
		};
};

class Emitter : public QObject {
		Q_OBJECT;
	public:
		Slotter *s;
		Emitter(Slotter *s) : QObject(s) {
			this->s = s;
		};

		boost::signal< void(int &) > bsig;
	Q_SIGNALS:
		void sig(int &);
	public Q_SLOTS:
		void emittest(int &val) {
			Q_EMIT sig(val);
		};
		void directtest(int &val) {
			s->slottest(val);
		};
		void boosttest(int &val) {
			bsig(val);
		}
};

int main(int argc, char **argv) {
	QCoreApplication a(argc, argv);
	Timer t;

	Slotter *s = new Slotter();
	Slotter *s2 = new Slotter();
	Emitter *e = new Emitter(s);

	int v;

	v = 0;
	t.restart();
	for (int i=0;i<1000000;++i)
		s->slottest(v);
	printf("Raw   : %8lld %d\n", t.elapsed(), v);

	v = 0;
	t.restart();
	for (int i=0;i<1000000;++i)
		e->directtest(v);
	printf("Direct: %8lld %d\n", t.elapsed(), v);

	v = 0;
	t.restart();
	for (int i=0;i<1000000;++i)
		e->emittest(v);
	printf("NoSig : %8lld %d\n", t.elapsed(), v);

	QObject::connect(e, SIGNAL(sig(int &)), s, SLOT(slottest(int &)));
	v = 0;
	t.restart();
	for (int i=0;i<1000000;++i)
		e->emittest(v);
	printf("Signal: %8lld %d\n", t.elapsed(), v);

	QObject::connect(e, SIGNAL(sig(int &)), s2, SLOT(slottest(int &)));
	v = 0;
	t.restart();
	for (int i=0;i<1000000;++i)
		e->emittest(v);
	printf("2Slots: %8lld %d\n", t.elapsed(), v);

	v = 0;
	t.restart();
	for (int i=0;i<1000000;++i)
		e->boosttest(v);
	printf("BNoSig: %8lld %d\n", t.elapsed(), v);

	e->bsig.connect(boost::bind(&Slotter::slottest, s, _1));
	v = 0;
	t.restart();
	for (int i=0;i<1000000;++i)
		e->boosttest(v);
	printf("Boost:  %8lld %d\n", t.elapsed(), v);

	e->bsig.connect(boost::bind(&Slotter::slottest, s2, _1));
	v = 0;
	t.restart();
	for (int i=0;i<1000000;++i)
		e->boosttest(v);
	printf("2Boost: %8lld %d\n", t.elapsed(), v);
}

#include "Emit.moc"