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author | 2024-04-22 08:04:58 +1000 | |
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committer | 2024-04-22 08:04:58 +1000 | |
commit | 184292b730f4236bd4840e780fdad97ee060ec84 (patch) | |
tree | 67902161a465fe92aec78ca502de07092b8cde0f /3rdparty/asio/src/examples/cpp03/timers/time_t_timer.cpp | |
parent | 24154bc1f00790f344120b3a85175d6f616c5ad0 (diff) |
3rdparty/asio: Updated to 1.30.2
Diffstat (limited to '3rdparty/asio/src/examples/cpp03/timers/time_t_timer.cpp')
-rw-r--r-- | 3rdparty/asio/src/examples/cpp03/timers/time_t_timer.cpp | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/timers/time_t_timer.cpp b/3rdparty/asio/src/examples/cpp03/timers/time_t_timer.cpp deleted file mode 100644 index 74426b3c71d..00000000000 --- a/3rdparty/asio/src/examples/cpp03/timers/time_t_timer.cpp +++ /dev/null @@ -1,106 +0,0 @@ -// -// time_t_timer.cpp -// ~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com) -// -// Distributed under the Boost Software License, Version 1.0. (See accompanying -// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -// - -#include <asio.hpp> -#include <ctime> -#include <iostream> - -// A custom implementation of the Clock concept from the standard C++ library. -struct time_t_clock -{ - // The duration type. - typedef asio::chrono::steady_clock::duration duration; - - // The duration's underlying arithmetic representation. - typedef duration::rep rep; - - // The ratio representing the duration's tick period. - typedef duration::period period; - - // An absolute time point represented using the clock. - typedef asio::chrono::time_point<time_t_clock> time_point; - - // The clock is not monotonically increasing. - static const bool is_steady = false; - - // Get the current time. - static time_point now() - { - return time_point() + asio::chrono::seconds(std::time(0)); - } -}; - -// The asio::basic_waitable_timer template accepts an optional WaitTraits -// template parameter. The underlying time_t clock has one-second granularity, -// so these traits may be customised to reduce the latency between the clock -// ticking over and a wait operation's completion. When the timeout is near -// (less than one second away) we poll the clock more frequently to detect the -// time change closer to when it occurs. The user can select the appropriate -// trade off between accuracy and the increased CPU cost of polling. In extreme -// cases, a zero duration may be returned to make the timers as accurate as -// possible, albeit with 100% CPU usage. -struct time_t_wait_traits -{ - // Determine how long until the clock should be next polled to determine - // whether the duration has elapsed. - static time_t_clock::duration to_wait_duration( - const time_t_clock::duration& d) - { - if (d > asio::chrono::seconds(1)) - return d - asio::chrono::seconds(1); - else if (d > asio::chrono::seconds(0)) - return asio::chrono::milliseconds(10); - else - return asio::chrono::seconds(0); - } - - // Determine how long until the clock should be next polled to determine - // whether the absoluate time has been reached. - static time_t_clock::duration to_wait_duration( - const time_t_clock::time_point& t) - { - return to_wait_duration(t - time_t_clock::now()); - } -}; - -typedef asio::basic_waitable_timer< - time_t_clock, time_t_wait_traits> time_t_timer; - -void handle_timeout(const asio::error_code&) -{ - std::cout << "handle_timeout\n"; -} - -int main() -{ - try - { - asio::io_context io_context; - - time_t_timer timer(io_context); - - timer.expires_after(asio::chrono::seconds(5)); - std::cout << "Starting synchronous wait\n"; - timer.wait(); - std::cout << "Finished synchronous wait\n"; - - timer.expires_after(asio::chrono::seconds(5)); - std::cout << "Starting asynchronous wait\n"; - timer.async_wait(&handle_timeout); - io_context.run(); - std::cout << "Finished asynchronous wait\n"; - } - catch (std::exception& e) - { - std::cout << "Exception: " << e.what() << "\n"; - } - - return 0; -} |