14. boost::asio::deadline_timer t(io, boost::posix_time::seconds(5)); 接下来，我们调用 deadline_timer::async_wait() 函数执行一个异步等待去取代Timer.1例中的阻塞等待。当调用这个函数时我们传入上面定义的print回调句柄。 t.async_wait(print); Nach dieser Antwort sollte dieser Code diese Arbeit erledigen: … [asio-users] [asio] when deadline_timer::cancel() returns Boost The boost::asio::basic_deadline_timer::expires_from_now() function cancels any pending asynchronous waits, and returns the number of asynchronous waits that were cancelled. 0. 116. Copy link FerenczD commented Sep 13, 2019. Boost.Asio定时器使用示例 目的. It always returns immediately. * late and the wait handler has already been executed, or will soon be. Tcp client (works with tcp server). Dies führt dazu, dass der Timer sich selbst zerstört und abbricht, und ruft Ihre Funktion mit einem Fehlercode auf, den Sie ignorieren, wodurch die Endlosschleife verursacht wird. Boost.Asio boost::asio::io_service io; boost::asio::deadline_timer t (io); t.expires_from_now … boost::asio::deadline_timer(理解)_aSnakePy的博客-CSDN博客 Boost.Asio C++ 网络编程：deadline_timer使用说明 the timer expired but the handler could be. boost 117. been delivered yet, i.e. the duration returned by expires_from_now () for the same effect.) The boost:: asio:: basic_deadline_timer:: expires_from_now function cancels any pending asynchronous waits, and returns the number of asynchronous waits that were cancelled. For each call to async_wait(), the supplied handler will be called exactly once. The second argument sets the timer to expire in i seconds. Boost Asio Deadline Timer sicher abbrechen. sitting in the demuxer's post queue. boost.asio系列(一)——deadline_timer 一.构造函数 一个deadline_timer只维护一个超时时间，一个deadline_timer不同时维护多个定时器。 If it returns 1 then the wait handler was successfully cancelled. Boost Asio Deadline Timer deadline_timer_service. Boost users I tried using a wait time of 10 microseconds with deadline_timer.wait() and am curious whether its actually waiting for 10 usec or more. using namespace st... If it returns 0 then you were too. 2. 二.同步. 在调用async_wait()后，无论调用deadline_timer::cancel()还是这个deadline_timer都析构掉，handler都会被触发。当然，这个在文档是有写的。规避野指针的办法有两个，一是传入的handler是shared_ptr，二是再封装一层。
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