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1 | |
2 | // Copyright Oliver Kowalke 2009. | |
3 | // Distributed under the Boost Software License, Version 1.0. | |
4 | // (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt) | |
6 | ||
7 | #include <cstdlib> | |
8 | #include <iostream> | |
9 | #include <stdexcept> | |
10 | ||
11 | #include <boost/cstdint.hpp> | |
12 | #include <boost/fiber/all.hpp> | |
13 | #include <boost/preprocessor.hpp> | |
14 | ||
15 | #include "../clock.hpp" | |
16 | ||
17 | #define CREATE(z, n, _) \ | |
18 | boost::fibers::fiber BOOST_PP_CAT(f,n) (worker); | |
19 | #define JOIN(z, n, _) \ | |
20 | BOOST_PP_CAT(f,n) .join(); | |
21 | ||
22 | void worker() {} | |
23 | ||
24 | duration_type measure10( duration_type overhead) { | |
25 | boost::fibers::fiber( worker).join(); | |
26 | BOOST_PP_REPEAT_FROM_TO(1, 10, CREATE, _); | |
27 | time_point_type start( clock_type::now() ); | |
28 | BOOST_PP_REPEAT_FROM_TO(1, 10, JOIN, _); | |
29 | duration_type total = clock_type::now() - start; | |
30 | total -= overhead_clock(); // overhead of measurement | |
31 | total /= 10; // loops | |
32 | return total; | |
33 | } | |
34 | ||
35 | duration_type measure50( duration_type overhead) { | |
36 | boost::fibers::fiber( worker).join(); | |
37 | BOOST_PP_REPEAT_FROM_TO(1, 50, CREATE, _); | |
38 | time_point_type start( clock_type::now() ); | |
39 | BOOST_PP_REPEAT_FROM_TO(1, 50, JOIN, _); | |
40 | duration_type total = clock_type::now() - start; | |
41 | total -= overhead_clock(); // overhead of measurement | |
42 | total /= 50; // loops | |
43 | return total; | |
44 | } | |
45 | ||
46 | duration_type measure100( duration_type overhead) { | |
47 | boost::fibers::fiber( worker).join(); | |
48 | BOOST_PP_REPEAT_FROM_TO(1, 100, CREATE, _); | |
49 | time_point_type start( clock_type::now() ); | |
50 | BOOST_PP_REPEAT_FROM_TO(1, 100, JOIN, _); | |
51 | duration_type total = clock_type::now() - start; | |
52 | total -= overhead_clock(); // overhead of measurement | |
53 | total /= 100; // loops | |
54 | return total; | |
55 | } | |
56 | ||
57 | duration_type measure500( duration_type overhead) { | |
58 | boost::fibers::fiber( worker).join(); | |
59 | #include "fiber_create_500.ipp" | |
60 | time_point_type start( clock_type::now() ); | |
61 | #include "fiber_join_500.ipp" | |
62 | duration_type total = clock_type::now() - start; | |
63 | total -= overhead_clock(); // overhead of measurement | |
64 | total /= 500; // loops | |
65 | return total; | |
66 | } | |
67 | ||
68 | duration_type measure1000( duration_type overhead) { | |
69 | boost::fibers::fiber( worker).join(); | |
70 | #include "fiber_create_1000.ipp" | |
71 | time_point_type start( clock_type::now() ); | |
72 | #include "fiber_join_1000.ipp" | |
73 | duration_type total = clock_type::now() - start; | |
74 | total -= overhead_clock(); // overhead of measurement | |
75 | total /= 1000; // loops | |
76 | return total; | |
77 | } | |
78 | ||
79 | duration_type measure5000( duration_type overhead) { | |
80 | boost::fibers::fiber( worker).join(); | |
81 | #include "fiber_create_5000.ipp" | |
82 | time_point_type start( clock_type::now() ); | |
83 | #include "fiber_join_5000.ipp" | |
84 | duration_type total = clock_type::now() - start; | |
85 | total -= overhead_clock(); // overhead of measurement | |
86 | total /= 5000; // loops | |
87 | return total; | |
88 | } | |
89 | ||
90 | duration_type measure10000( duration_type overhead) { | |
91 | boost::fibers::fiber( worker).join(); | |
92 | #include "fiber_create_10000.ipp" | |
93 | time_point_type start( clock_type::now() ); | |
94 | #include "fiber_join_10000.ipp" | |
95 | duration_type total = clock_type::now() - start; | |
96 | total -= overhead_clock(); // overhead of measurement | |
97 | total /= 10000; // loops | |
98 | return total; | |
99 | } | |
100 | ||
101 | int main( int argc, char * argv[]) { | |
102 | try { | |
103 | duration_type overhead = overhead_clock(); | |
104 | boost::uint64_t res = measure10( overhead).count(); | |
105 | std::cout << "10 jobs: average of " << res << " nano seconds" << std::endl; | |
106 | res = measure50( overhead).count(); | |
107 | std::cout << "50 jobs: average of " << res << " nano seconds" << std::endl; | |
108 | res = measure100( overhead).count(); | |
109 | std::cout << "100 jobs: average of " << res << " nano seconds" << std::endl; | |
110 | res = measure500( overhead).count(); | |
111 | std::cout << "500 jobs: average of " << res << " nano seconds" << std::endl; | |
112 | res = measure1000( overhead).count(); | |
113 | std::cout << "1000 jobs: average of " << res << " nano seconds" << std::endl; | |
114 | res = measure5000( overhead).count(); | |
115 | std::cout << "5000 jobs: average of " << res << " nano seconds" << std::endl; | |
116 | res = measure10000( overhead).count(); | |
117 | std::cout << "10000 jobs: average of " << res << " nano seconds" << std::endl; | |
118 | return EXIT_SUCCESS; | |
119 | } catch ( std::exception const& e) { | |
120 | std::cerr << "exception: " << e.what() << std::endl; | |
121 | } catch (...) { | |
122 | std::cerr << "unhandled exception" << std::endl; | |
123 | } | |
124 | return EXIT_FAILURE; | |
125 | } |