/*
 * Xournal++
 *
 * This file is part of the Xournal UnitTests
 * It's helper class for tests speed testing
 *
 * @author Xournal++ Team
 * https://github.com/xournalpp/xournalpp
 *
 * @license GNU GPLv2 or later
 */

#include <StringUtils.h>

#include <ctime>
using std::clock;
#include <functional>
using std::function;
#include <iostream>
using std::cout;
using std::endl;
#include <string>
using std::string;

class SpeedTest
{
	
public:
	void startTest(string target)
	{
		cout << endl << "== Speed test of " << target << " ==" << endl;
		this->target = target;
		begin = clock();
	}
	
	void endTest()
	{
		clock_t end = clock();

		printMemory();

		double elapsed_secs = double(end - begin) / CLOCKS_PER_SEC;
		cout << "Time to " << target << ": " << std::to_string(elapsed_secs) << endl;
	}
	
private:
	clock_t begin;
	string target;
	
	static void printMemory()
	{
		string cmd = "bash -c \"cat /proc/";
		cmd += std::to_string(::getpid()) + "/status | grep Vm\"";
		system(cmd.c_str());
	}
	
};