void test_funcall() {
expect_int(10, sum_func(2, 3, 5));
}
size_t CDictWordIndex::mem_size() const
{
return sizeof(CDictWordIndex) + 65536 * sizeof(std::vector<int>) +
sizeof(int) * sum_func(m_twoletter, m_twoletter + 65536, std::mem_fun_ref(&std::vector<int>::capacity));
}
STKUNIT_UNIT_TEST( PerformanceTest, LoopIteration)
{
boost::timer total_time;
# ifdef __PGI
const size_t vector_size = 2000000000/4;
#else
const size_t vector_size = 2000000000;
#endif
std::vector<unsigned> data;
data.reserve(vector_size);
{
boost::timer timer;
std::srand(10);
std::generate_n(std::back_inserter(data), vector_size, &std::rand);
double elapsedtime = timer.elapsed();
std::cout << "Construction time: " << elapsedtime << " seconds." << std::endl;
}
{
boost::timer timer;
long long sum = std::accumulate( data.begin(), data.end(), 0ll );
double elapsedtime = timer.elapsed();
std::cout << "Iterator accumulate took " << elapsedtime << " seconds." << std::endl;
force_calculation(sum);
}
{
boost::timer timer;
unsigned* begin = &data.front();
long long sum = std::accumulate( begin, begin+data.size(), 0ll );
double elapsedtime = timer.elapsed();
std::cout << "Pointer accumulate took " << elapsedtime << " seconds." << std::endl;
force_calculation(sum);
}
{
boost::timer timer;
long long sum = 0;
for( std::vector<unsigned>::iterator it = data.begin(), iend = data.end(); it != iend; ++it )
{
sum += *it;
}
double elapsedtime = timer.elapsed();
std::cout << "Iterator for loop took " << elapsedtime << " seconds." << std::endl;
force_calculation(sum);
}
{
boost::timer timer;
long long sum = 0;
unsigned* it = &data.front();
for( unsigned* iend = it+data.size(); it != iend; ++it )
{
sum += *it;
}
double elapsedtime = timer.elapsed();
std::cout << "Pointer for loop took " << elapsedtime << " seconds." << std::endl;
force_calculation(sum);
}
{
boost::timer timer;
long long sum = 0;
for( std::size_t i = 0, size = data.size(); i != size; ++i )
{
sum += data[i];
}
double elapsedtime = timer.elapsed();
std::cout << "Index for (size_t) loop took " << elapsedtime << " seconds." << std::endl;
force_calculation(sum);
}
{
boost::timer timer;
long long sum = 0;
for( int i = 0, size = data.size(); i != size; ++i )
{
sum += data[i];
}
double elapsedtime = timer.elapsed();
std::cout << "Index for (int) loop took " << elapsedtime << " seconds." << std::endl;
force_calculation(sum);
}
{
boost::timer timer;
long long sum = std::for_each( data.begin(), data.end(), sum_func() ).sum;
double elapsedtime = timer.elapsed();
std::cout << "Index for_each took " << elapsedtime << " seconds." << std::endl;
force_calculation(sum);
}
{
boost::timer timer;
unsigned* begin = &data.front();
long long sum = std::for_each( begin, begin+data.size(), sum_func() ).sum;
double elapsedtime = timer.elapsed();
std::cout << "Pointer for_each took " << elapsedtime << " seconds." << std::endl;
force_calculation(sum);
}
{
boost::timer timer;
long long sum = 0;
BOOST_FOREACH( unsigned i, data )
{
sum += i;
}
double elapsedtime = timer.elapsed();
std::cout << "BOOST_FOREACH took " << elapsedtime << " seconds." << std::endl;
force_calculation(sum);
}
double elapsedtime = total_time.elapsed();
std::cout << "Total time: " << elapsedtime << " seconds." << std::endl;
}
void start(){
int cont = 1;
do{
cont = sum_func();
}while(cont != 0);
}
