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1 | // |
2 | // timer.cpp | |
3 | // ~~~~~~~~~ | |
4 | // | |
5 | // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com) | |
6 | // | |
7 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
8 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
9 | // | |
10 | ||
11 | #include <iostream> | |
12 | #include <boost/asio.hpp> | |
13 | #include <boost/thread/thread.hpp> | |
14 | #include <boost/bind.hpp> | |
15 | #include <boost/date_time/posix_time/posix_time.hpp> | |
16 | ||
17 | class printer | |
18 | { | |
19 | public: | |
20 | printer(boost::asio::io_service& io) | |
21 | : strand_(io), | |
22 | timer1_(io, boost::posix_time::seconds(1)), | |
23 | timer2_(io, boost::posix_time::seconds(1)), | |
24 | count_(0) | |
25 | { | |
26 | timer1_.async_wait(strand_.wrap(boost::bind(&printer::print1, this))); | |
27 | timer2_.async_wait(strand_.wrap(boost::bind(&printer::print2, this))); | |
28 | } | |
29 | ||
30 | ~printer() | |
31 | { | |
32 | std::cout << "Final count is " << count_ << std::endl; | |
33 | } | |
34 | ||
35 | void print1() | |
36 | { | |
37 | if (count_ < 10) | |
38 | { | |
39 | std::cout << "Timer 1: " << count_ << std::endl; | |
40 | ++count_; | |
41 | ||
42 | timer1_.expires_at(timer1_.expires_at() + boost::posix_time::seconds(1)); | |
43 | timer1_.async_wait(strand_.wrap(boost::bind(&printer::print1, this))); | |
44 | } | |
45 | } | |
46 | ||
47 | void print2() | |
48 | { | |
49 | if (count_ < 10) | |
50 | { | |
51 | std::cout << "Timer 2: " << count_ << std::endl; | |
52 | ++count_; | |
53 | ||
54 | timer2_.expires_at(timer2_.expires_at() + boost::posix_time::seconds(1)); | |
55 | timer2_.async_wait(strand_.wrap(boost::bind(&printer::print2, this))); | |
56 | } | |
57 | } | |
58 | ||
59 | private: | |
60 | boost::asio::io_service::strand strand_; | |
61 | boost::asio::deadline_timer timer1_; | |
62 | boost::asio::deadline_timer timer2_; | |
63 | int count_; | |
64 | }; | |
65 | ||
66 | int main() | |
67 | { | |
68 | boost::asio::io_service io; | |
69 | printer p(io); | |
70 | boost::thread t(boost::bind(&boost::asio::io_service::run, &io)); | |
71 | io.run(); | |
72 | t.join(); | |
73 | ||
74 | return 0; | |
75 | } |