94 lines
2.0 KiB
C++
94 lines
2.0 KiB
C++
//
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// time_t_timer.cpp
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// ~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include <boost/asio.hpp>
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#include <ctime>
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#include <iostream>
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struct time_t_traits
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{
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// The time type.
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typedef std::time_t time_type;
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// The duration type.
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struct duration_type
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{
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duration_type() : value(0) {}
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duration_type(std::time_t v) : value(v) {}
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std::time_t value;
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};
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// Get the current time.
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static time_type now()
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{
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return std::time(0);
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}
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// Add a duration to a time.
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static time_type add(const time_type& t, const duration_type& d)
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{
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return t + d.value;
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}
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// Subtract one time from another.
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static duration_type subtract(const time_type& t1, const time_type& t2)
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{
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return duration_type(t1 - t2);
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}
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// Test whether one time is less than another.
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static bool less_than(const time_type& t1, const time_type& t2)
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{
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return t1 < t2;
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}
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// Convert to POSIX duration type.
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static boost::posix_time::time_duration to_posix_duration(
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const duration_type& d)
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{
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return boost::posix_time::seconds(d.value);
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}
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};
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typedef boost::asio::basic_deadline_timer<
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std::time_t, time_t_traits> time_t_timer;
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void handle_timeout(const boost::system::error_code&)
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{
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std::cout << "handle_timeout\n";
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}
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int main()
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{
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try
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{
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boost::asio::io_context io_context;
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time_t_timer timer(io_context);
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timer.expires_from_now(5);
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std::cout << "Starting synchronous wait\n";
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timer.wait();
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std::cout << "Finished synchronous wait\n";
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timer.expires_from_now(5);
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std::cout << "Starting asynchronous wait\n";
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timer.async_wait(&handle_timeout);
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io_context.run();
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std::cout << "Finished asynchronous wait\n";
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}
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catch (std::exception& e)
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{
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std::cout << "Exception: " << e.what() << "\n";
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}
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return 0;
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}
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