source: doc/theses/andrew_beach_MMath/code/cond-catch.cpp@ 82e5670

Last change on this file since 82e5670 was f79ee0d, checked in by Peter A. Buhr <pabuhr@…>, 4 years ago

update exception benchmarks

  • Property mode set to 100644
File size: 1.1 KB
Line 
1// Conditional Match (or Re-Raise)
2#include <chrono>
3#include <cstdlib>
4#include <exception>
5#include <iostream>
6#include <iomanip>
7
8using namespace std;
9using namespace std::chrono;
10
11struct EmptyException : public std::exception {};
12
13bool should_catch = false;
14
15int main(int argc, char * argv[]) {
16 unsigned int times = 1;
17 if (1 < argc) {
18 times = strtol(argv[1], nullptr, 10);
19 }
20 if (2 < argc) {
21 should_catch = strtol(argv[2], nullptr, 10);
22 }
23
24 time_point<steady_clock> start_time = steady_clock::now();
25 for (unsigned int count = 0 ; count < times ; ++count) {
26 try {
27 try {
28 throw EmptyException();
29 } catch (EmptyException & exc) {
30 if (!should_catch) {
31 throw;
32 }
33 asm volatile ("# catch block (conditional)");
34 }
35 } catch (EmptyException &) {
36 asm volatile ("# catch block (unconditional)");
37 }
38 }
39 time_point<steady_clock> end_time = steady_clock::now();
40 nanoseconds duration = duration_cast<nanoseconds>(end_time - start_time);
41 cout << "Run-Time (s): " << fixed << setprecision(1) << duration.count() / 1'000'000'000. << endl;
42}
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