ADTast-experimentalpthread-emulation
Last change
on this file since 01865fb was
49b3389,
checked in by Andrew Beach <ajbeach@…>, 3 years ago
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Follow-up, perventing recursion removal in C++.
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-
Property mode set to
100644
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File size:
1.1 KB
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1 | // Throw Across Empty Function |
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2 | #include <chrono> |
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3 | #include <cstdio> |
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4 | #include <cstdlib> |
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5 | #include <exception> |
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6 | #include <iostream> |
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7 | #include <iomanip> |
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8 | |
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9 | using namespace std; |
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10 | using namespace std::chrono; |
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11 | |
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12 | struct EmptyException : public std::exception {}; |
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13 | |
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14 | void unwind_empty(unsigned int frames) { |
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15 | if (frames) { |
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16 | unwind_empty(frames - 1); |
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17 | if (-1 == frames) printf("~"); |
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18 | } else { |
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19 | throw (EmptyException){}; |
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20 | } |
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21 | } |
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22 | |
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23 | int main(int argc, char * argv[]) { |
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24 | unsigned int times = 1; |
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25 | unsigned int total_frames = 1; |
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26 | if (1 < argc) { |
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27 | times = strtol(argv[1], nullptr, 10); |
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28 | } |
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29 | if (2 < argc) { |
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30 | total_frames = strtol(argv[2], nullptr, 10); |
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31 | } |
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32 | |
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33 | time_point<steady_clock> start_time = steady_clock::now(); |
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34 | for (unsigned int count = 0 ; count < times ; ++count) { |
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35 | try { |
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36 | unwind_empty(total_frames); |
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37 | } catch (EmptyException &) { |
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38 | asm volatile ("# catch block"); |
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39 | } |
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40 | } |
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41 | time_point<steady_clock> end_time = steady_clock::now(); |
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42 | nanoseconds duration = duration_cast<nanoseconds>(end_time - start_time); |
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43 | cout << "Run-Time (s): " << fixed << setprecision(1) << duration.count() / 1'000'000'000. << endl; |
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44 | } |
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