1 | // test_thread_clock.cpp ----------------------------------------------------------// |
---|---|
2 | |
3 | // Copyright 2009 Vicente J. Botet Escriba |
4 | |
5 | // Distributed under the Boost Software License, Version 1.0. |
6 | // See http://www.boost.org/LICENSE_1_0.txt |
7 | |
8 | |
9 | #include <boost/chrono/thread_clock.hpp> |
10 | #include <boost/type_traits.hpp> |
11 | |
12 | #include <iostream> |
13 | |
14 | |
15 | void test_thread_clock() |
16 | { |
17 | #if defined(BOOST_CHRONO_HAS_THREAD_CLOCK) |
18 | using namespace boost::chrono; |
19 | |
20 | std::cout << "thread_clock test"<< std::endl; |
21 | thread_clock::duration delay = milliseconds(5); |
22 | thread_clock::time_point start = thread_clock::now(); |
23 | while (thread_clock::now() - start <= delay) |
24 | ; |
25 | thread_clock::time_point stop = thread_clock::now(); |
26 | thread_clock::duration elapsed = stop - start; |
27 | std::cout << "paused "<< nanoseconds(elapsed).count() << " nanoseconds\n"; |
28 | start = thread_clock::now(); |
29 | stop = thread_clock::now(); |
30 | std::cout << "thread_clock resolution estimate: "<< nanoseconds(stop-start).count() << " nanoseconds\n"; |
31 | #else |
32 | std::cout << "thread_clock not available\n"; |
33 | #endif |
34 | } |
35 | |
36 | |
37 | int main() |
38 | { |
39 | test_thread_clock(); |
40 | return 0; |
41 | } |
42 | |
43 |