[DEV] add v1.76.0

libs/asio/example/cpp03/tutorial/timer5/timer.cpp

@@ -2,7 +2,7 @@
 // timer.cpp
 // ~~~~~~~~~
 //
-// Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+// 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)
@@ -11,16 +11,15 @@
 #include <iostream>
 #include <boost/asio.hpp>
 #include <boost/thread/thread.hpp>
-#include <boost/bind.hpp>
-#include <boost/date_time/posix_time/posix_time.hpp>
+#include <boost/bind/bind.hpp>
 
 class printer
 {
 public:
   printer(boost::asio::io_context& io)
-    : strand_(io),
-      timer1_(io, boost::posix_time::seconds(1)),
-      timer2_(io, boost::posix_time::seconds(1)),
+    : strand_(boost::asio::make_strand(io)),
+      timer1_(io, boost::asio::chrono::seconds(1)),
+      timer2_(io, boost::asio::chrono::seconds(1)),
       count_(0)
   {
     timer1_.async_wait(boost::asio::bind_executor(strand_,
@@ -42,7 +41,7 @@ public:
       std::cout << "Timer 1: " << count_ << std::endl;
       ++count_;
 
-      timer1_.expires_at(timer1_.expires_at() + boost::posix_time::seconds(1));
+      timer1_.expires_at(timer1_.expiry() + boost::asio::chrono::seconds(1));
 
       timer1_.async_wait(boost::asio::bind_executor(strand_,
             boost::bind(&printer::print1, this)));
@@ -56,7 +55,7 @@ public:
       std::cout << "Timer 2: " << count_ << std::endl;
       ++count_;
 
-      timer2_.expires_at(timer2_.expires_at() + boost::posix_time::seconds(1));
+      timer2_.expires_at(timer2_.expiry() + boost::asio::chrono::seconds(1));
 
       timer2_.async_wait(boost::asio::bind_executor(strand_,
             boost::bind(&printer::print2, this)));
@@ -64,9 +63,9 @@ public:
   }
 
 private:
-  boost::asio::io_context::strand strand_;
-  boost::asio::deadline_timer timer1_;
-  boost::asio::deadline_timer timer2_;
+  boost::asio::strand<boost::asio::io_context::executor_type> strand_;
+  boost::asio::steady_timer timer1_;
+  boost::asio::steady_timer timer2_;
   int count_;
 };