C++11Exeption Performance

exception_test.cpp

// VS2013 c++11 gtest
#include <chrono>
#include "gtest/gtest.h"

class ExceptionTest : public testing::Test
{
public:
	class TimeCounter
	{
	public:
		TimeCounter()
		{
			start_ = std::chrono::system_clock::now();
		}
		~TimeCounter()
		{
			auto end = std::chrono::system_clock::now();
			std::chrono::duration<double> elapsed_seconds = end - start_;

			std::time_t end_time = std::chrono::system_clock::to_time_t(end);
			std::cout << "finished computation at " << std::ctime(&end_time)
				<< "elapsed time: " << elapsed_seconds.count() << "s\n";
		}
		std::chrono::time_point<std::chrono::system_clock> start_;
	};
protected:
	int test(int in)
	{
		in++;
		in = in % count_;
		return in;
	}

	const int count_ = 100000; //10W times call
};


TEST_F(ExceptionTest, NoException)
{
	TimeCounter tc;
	for (int i = 0; i < count_; ++i)
	{
		test(i);
	}
}

TEST_F(ExceptionTest, ExceptionNoThrown)
{
	TimeCounter tc;
	for (int i = 0; i < count_; ++i)
	{
		try
		{
			test(i);
		}
		catch (...)
		{
		}
	}
}

TEST_F(ExceptionTest, ExceptionWithIntThrown)
{
	TimeCounter tc;
	for (int i = 0; i < count_; ++i)
	{
		try
		{
			test(i);
			throw 10;
		}
		catch (...)
		{
		}
	}
}

int main(int argc, char* argv[])
{
	printf("Running main() from gtest_main.cc\n");
	testing::InitGoogleTest(&argc, argv);
	RUN_ALL_TESTS();
	getchar();
	return 0;
}