Move existing examples into a C++03-specific directory, and add a new

directory for C++11-specific examples. A limited subset of the C++03
examples have been converted to their C++11 equivalents.


[SVN r84312]

example/cpp03/tutorial/timer5/timer.cpp

@@ -0,0 +1,75 @@
+//
+// timer.cpp
+// ~~~~~~~~~
+//
+// Copyright (c) 2003-2012 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 <iostream>
+#include <boost/asio.hpp>
+#include <boost/thread/thread.hpp>
+#include <boost/bind.hpp>
+#include <boost/date_time/posix_time/posix_time.hpp>
+
+class printer
+{
+public:
+  printer(boost::asio::io_service& io)
+    : strand_(io),
+      timer1_(io, boost::posix_time::seconds(1)),
+      timer2_(io, boost::posix_time::seconds(1)),
+      count_(0)
+  {
+    timer1_.async_wait(strand_.wrap(boost::bind(&printer::print1, this)));
+    timer2_.async_wait(strand_.wrap(boost::bind(&printer::print2, this)));
+  }
+
+  ~printer()
+  {
+    std::cout << "Final count is " << count_ << "\n";
+  }
+
+  void print1()
+  {
+    if (count_ < 10)
+    {
+      std::cout << "Timer 1: " << count_ << "\n";
+      ++count_;
+
+      timer1_.expires_at(timer1_.expires_at() + boost::posix_time::seconds(1));
+      timer1_.async_wait(strand_.wrap(boost::bind(&printer::print1, this)));
+    }
+  }
+
+  void print2()
+  {
+    if (count_ < 10)
+    {
+      std::cout << "Timer 2: " << count_ << "\n";
+      ++count_;
+
+      timer2_.expires_at(timer2_.expires_at() + boost::posix_time::seconds(1));
+      timer2_.async_wait(strand_.wrap(boost::bind(&printer::print2, this)));
+    }
+  }
+
+private:
+  boost::asio::strand strand_;
+  boost::asio::deadline_timer timer1_;
+  boost::asio::deadline_timer timer2_;
+  int count_;
+};
+
+int main()
+{
+  boost::asio::io_service io;
+  printer p(io);
+  boost::thread t(boost::bind(&boost::asio::io_service::run, &io));
+  io.run();
+  t.join();
+
+  return 0;
+}