This project aims to provide some commonly used test functions while developing with C++.
Put the folder TestFuncs to /usr/local/include so that you can use the test functions by adding #include <TestFuncs/...> to your project (C++17 is required). The files and functions in this repository are not supposed to be used in projects which are to be released!
Global timer for timing test, managed with labels.
- Measure time elapsed between two time points:
auto someFunc = [] { this_thread::sleep_for(12ms); };
for (int i = 0; i < 20; ++i) {
dbg::TicToc::start("tm");
someFunc();
dbg::TicToc::stop("tm");
}
/* output:
timer[tm]: cnt[20] total[241.692379 ms] avg[12.084619 ms] last[12.090958 ms]
*/When dbg::TicToc::start(string label) is called for the first time, a global timer named label is created. The timer records time elapsed between a pair of start() and stop(), and automatically output the average and last value when it's destructed (the executable exits).
- Measure and output time in each run:
auto someFunc = [] { this_thread::sleep_for(12ms); };
for (int i = 0; i < 3; ++i) {
dbg::TicToc::start("tm");
someFunc();
dbg::TicToc::showTime("tm", true);
}
/* output:
timer[tm]: cnt[1] total[12.096808 ms] avg[12.096808 ms] last[12.096808 ms]
timer[tm]: cnt[2] total[24.186642 ms] avg[12.093321 ms] last[12.089834 ms]
timer[tm]: cnt[3] total[36.275821 ms] avg[12.091940 ms] last[12.089179 ms]
timer[tm]: cnt[3] total[36.275821 ms] avg[12.091940 ms] last[12.089179 ms]
*/dbg::TicToc::showTime(string label, bool stop) output the timer info immediately. If the argument stop is set to true, it will stop the timer in the meantime.
- Measure time elapsed in a scope
auto someFunc = [](int i) {
dbg::TicToc::ScopedTimer st("tm", true);
if (i & 1)
this_thread::sleep_for(12ms);
};
for (int i = 0; i < 4; ++i)
someFunc(i);
/* output:
timer[tm]: cnt[1] total[0.682000 us] avg[0.682000 us] last[0.682000 us]
timer[tm]: cnt[2] total[12.090938 ms] avg[6.045469 ms] last[12.090256 ms]
timer[tm]: cnt[3] total[12.090991 ms] avg[4.030330 ms] last[53.000000 ns]
timer[tm]: cnt[4] total[24.182239 ms] avg[6.045560 ms] last[12.091248 ms]
timer[tm]: cnt[4] total[24.182239 ms] avg[6.045560 ms] last[12.091248 ms]
*/dbg::TicToc::ScopedTimer start a timer when it's constructed and stop the timer when it's destructed. It's useful in functions with multiple return.
Latency test for given functions.
auto someFunc = [] { this_thread::sleep_for(12ms); };
auto time = dbg::benchmark(3, 100, someFunc);
cout << "time cost: " << time << " ms\n";
/* output:
time cost: 12.0641 ms
*/dbg::benchmark() runs given function for specific iterations in each sample. The best average time is returned.
Show SSE packed variables.
- Show integer variables:
auto val = _mm_set_epi32(1, -2, 0, 4);
dbg::showM128i<int>(val);
/* output:
4 0 -2 1
*/- Show float variables:
auto val = _mm_set_ps(3.14, 10, -0.001, 0);
dbg::showM128(val, "%4.3f ");
/* output
0.000 -0.001 10.000 3.140
*/