source:
doc/theses/andrew_beach_MMath/code/throw-empty.cpp
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18783b4
Last change on this file since 18783b4 was f79ee0d, checked in by , 3 years ago | |
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[ea593a3] | 1 | // Throw Across Empty Function |
[ee23a8d] | 2 | #include <chrono> |
[ea593a3] | 3 | #include <cstdlib> |
[ee23a8d] | 4 | #include <exception> |
5 | #include <iostream> | |
[f79ee0d] | 6 | #include <iomanip> |
[ee23a8d] | 7 | |
[f79ee0d] | 8 | using namespace std; |
[ee23a8d] | 9 | using namespace std::chrono; |
[ea593a3] | 10 | |
11 | struct EmptyException : public std::exception {}; | |
12 | ||
13 | void unwind_empty(unsigned int frames) { | |
14 | if (frames) { | |
15 | unwind_empty(frames - 1); | |
16 | } else { | |
17 | throw (EmptyException){}; | |
18 | } | |
19 | } | |
20 | ||
21 | int main(int argc, char * argv[]) { | |
22 | unsigned int times = 1; | |
23 | unsigned int total_frames = 1; | |
[ee23a8d] | 24 | if (1 < argc) { |
[ea593a3] | 25 | times = strtol(argv[1], nullptr, 10); |
26 | } | |
[ee23a8d] | 27 | if (2 < argc) { |
[ea593a3] | 28 | total_frames = strtol(argv[2], nullptr, 10); |
29 | } | |
30 | ||
[ee23a8d] | 31 | time_point<steady_clock> start_time = steady_clock::now(); |
[ea593a3] | 32 | for (unsigned int count = 0 ; count < times ; ++count) { |
33 | try { | |
34 | unwind_empty(total_frames); | |
35 | } catch (EmptyException &) { | |
[54651005] | 36 | asm volatile ("# catch block"); |
[ea593a3] | 37 | } |
38 | } | |
[ee23a8d] | 39 | time_point<steady_clock> end_time = steady_clock::now(); |
40 | nanoseconds duration = duration_cast<nanoseconds>(end_time - start_time); | |
[f79ee0d] | 41 | cout << "Run-Time (s): " << fixed << setprecision(1) << duration.count() / 1'000'000'000. << endl; |
[ea593a3] | 42 | } |
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