Imported Upstream version 1.57.0upstream/1.57.0

2 files changed, 216 insertions, 0 deletions

diff --git a/doc/html/boost_asio/example/cpp03/timers/tick_count_timer.cpp b/doc/html/boost_asio/example/cpp03/timers/tick_count_timer.cpp
new file mode 100644
index 0000000000..aa84c84da7
--- /dev/null
+++ b/doc/html/boost_asio/example/cpp03/timers/tick_count_timer.cpp
@@ -0,0 +1,123 @@
+//
+// tick_count_timer.cpp
+// ~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2014 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 <boost/asio.hpp>
+#include <ctime>
+#include <iostream>
+
+#if defined(WIN32)
+# include <windows.h>
+#else
+# error This example is for Windows only!
+#endif
+
+struct tick_count_traits
+{
+  // The time type. This type has no constructor that takes a DWORD to ensure
+  // that the timer can only be used with relative times.
+  class time_type
+  {
+  public:
+    time_type() : ticks_(0) {}
+  private:
+    friend struct tick_count_traits;
+    DWORD ticks_;
+  };
+
+  // The duration type. According to the TimeTraits requirements, the duration
+  // must be a signed type. This means we can't handle durations larger than
+  // 2^31.
+  class duration_type
+  {
+  public:
+    duration_type() : ticks_(0) {}
+    duration_type(LONG ticks) : ticks_(ticks) {}
+  private:
+    friend struct tick_count_traits;
+    LONG ticks_;
+  };
+
+  // Get the current time.
+  static time_type now()
+  {
+    time_type result;
+    result.ticks_ = ::GetTickCount();
+    return result;
+  }
+
+  // Add a duration to a time.
+  static time_type add(const time_type& t, const duration_type& d)
+  {
+    time_type result;
+    result.ticks_ = t.ticks_ + d.ticks_;
+    return result;
+  }
+
+  // Subtract one time from another.
+  static duration_type subtract(const time_type& t1, const time_type& t2)
+  {
+    // DWORD tick count values can wrap (see less_than() below). We'll convert
+    // to a duration by taking the absolute difference and adding the sign
+    // based on which is the "lesser" absolute time.
+    return duration_type(less_than(t1, t2)
+        ? -static_cast<LONG>(t2.ticks_ - t1.ticks_)
+        : static_cast<LONG>(t1.ticks_ - t2.ticks_));
+  }
+
+  // Test whether one time is less than another.
+  static bool less_than(const time_type& t1, const time_type& t2)
+  {
+    // DWORD tick count values wrap periodically, so we'll use a heuristic that
+    // says that if subtracting t1 from t2 yields a value smaller than 2^31,
+    // then t1 is probably less than t2. This means that we can't handle
+    // durations larger than 2^31, which shouldn't be a problem in practice.
+    return (t2.ticks_ - t1.ticks_) < static_cast<DWORD>(1 << 31);
+  }
+
+  // Convert to POSIX duration type.
+  static boost::posix_time::time_duration to_posix_duration(
+      const duration_type& d)
+  {
+    return boost::posix_time::milliseconds(d.ticks_);
+  }
+};
+
+typedef boost::asio::basic_deadline_timer<
+    DWORD, tick_count_traits> tick_count_timer;
+
+void handle_timeout(const boost::system::error_code&)
+{
+  std::cout << "handle_timeout\n";
+}
+
+int main()
+{
+  try
+  {
+    boost::asio::io_service io_service;
+
+    tick_count_timer timer(io_service, 5000);
+    std::cout << "Starting synchronous wait\n";
+    timer.wait();
+    std::cout << "Finished synchronous wait\n";
+
+    timer.expires_from_now(5000);
+    std::cout << "Starting asynchronous wait\n";
+    timer.async_wait(&handle_timeout);
+    io_service.run();
+    std::cout << "Finished asynchronous wait\n";
+  }
+  catch (std::exception& e)
+  {
+    std::cout << "Exception: " << e.what() << "\n";
+  }
+
+  return 0;
+}
diff --git a/doc/html/boost_asio/example/cpp03/timers/time_t_timer.cpp b/doc/html/boost_asio/example/cpp03/timers/time_t_timer.cpp
new file mode 100644
index 0000000000..9ae42cee46
--- /dev/null
+++ b/doc/html/boost_asio/example/cpp03/timers/time_t_timer.cpp
@@ -0,0 +1,93 @@
+//
+// time_t_timer.cpp
+// ~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2014 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 <boost/asio.hpp>
+#include <ctime>
+#include <iostream>
+
+struct time_t_traits
+{
+  // The time type.
+  typedef std::time_t time_type;
+
+  // The duration type.
+  struct duration_type
+  {
+    duration_type() : value(0) {}
+    duration_type(std::time_t v) : value(v) {}
+    std::time_t value;
+  };
+
+  // Get the current time.
+  static time_type now()
+  {
+    return std::time(0);
+  }
+
+  // Add a duration to a time.
+  static time_type add(const time_type& t, const duration_type& d)
+  {
+    return t + d.value;
+  }
+
+  // Subtract one time from another.
+  static duration_type subtract(const time_type& t1, const time_type& t2)
+  {
+    return duration_type(t1 - t2);
+  }
+
+  // Test whether one time is less than another.
+  static bool less_than(const time_type& t1, const time_type& t2)
+  {
+    return t1 < t2;
+  }
+
+  // Convert to POSIX duration type.
+  static boost::posix_time::time_duration to_posix_duration(
+      const duration_type& d)
+  {
+    return boost::posix_time::seconds(d.value);
+  }
+};
+
+typedef boost::asio::basic_deadline_timer<
+    std::time_t, time_t_traits> time_t_timer;
+
+void handle_timeout(const boost::system::error_code&)
+{
+  std::cout << "handle_timeout\n";
+}
+
+int main()
+{
+  try
+  {
+    boost::asio::io_service io_service;
+
+    time_t_timer timer(io_service);
+
+    timer.expires_from_now(5);
+    std::cout << "Starting synchronous wait\n";
+    timer.wait();
+    std::cout << "Finished synchronous wait\n";
+
+    timer.expires_from_now(5);
+    std::cout << "Starting asynchronous wait\n";
+    timer.async_wait(&handle_timeout);
+    io_service.run();
+    std::cout << "Finished asynchronous wait\n";
+  }
+  catch (std::exception& e)
+  {
+    std::cout << "Exception: " << e.what() << "\n";
+  }
+
+  return 0;
+}