Chris@16: //  boost/timer/timer.hpp  -------------------------------------------------------------//
Chris@16: 
Chris@16: //  Copyright Beman Dawes 1994-2007, 2011
Chris@16: 
Chris@16: //  Distributed under the Boost Software License, Version 1.0.
Chris@16: //  See http://www.boost.org/LICENSE_1_0.txt
Chris@16: 
Chris@16: #ifndef BOOST_TIMER_TIMER_HPP                  
Chris@16: #define BOOST_TIMER_TIMER_HPP
Chris@16: 
Chris@16: #include <boost/config/warning_disable.hpp>
Chris@16: 
Chris@16: #include <boost/timer/config.hpp>
Chris@16: #include <boost/chrono/chrono.hpp>
Chris@16: #include <boost/cstdint.hpp>
Chris@16: #include <string>
Chris@16: #include <cstring>
Chris@16: #include <ostream>
Chris@16: 
Chris@16: #include <boost/config/abi_prefix.hpp> // must be the last #include
Chris@16: 
Chris@16: #   if defined(_MSC_VER)
Chris@16: #     pragma warning(push)           // Save warning settings
Chris@16: #     pragma warning(disable : 4251) // disable warning: class 'std::basic_string<_Elem,_Traits,_Ax>'
Chris@16: #   endif                            // needs to have dll-interface...
Chris@16: 
Chris@16: //--------------------------------------------------------------------------------------//
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16: namespace timer
Chris@16: {
Chris@16:   class cpu_timer;
Chris@16:   class auto_cpu_timer;
Chris@16: 
Chris@16:   typedef boost::int_least64_t nanosecond_type;
Chris@16: 
Chris@16:   struct cpu_times
Chris@16:   {
Chris@16:     nanosecond_type wall;
Chris@16:     nanosecond_type user;
Chris@16:     nanosecond_type system;
Chris@16: 
Chris@16:     void clear() { wall = user = system = 0LL; }
Chris@16:   };
Chris@16:       
Chris@16:   const short         default_places = 6;
Chris@16: 
Chris@16:   BOOST_TIMER_DECL
Chris@16:   std::string format(const cpu_times& times, short places, const std::string& format); 
Chris@16: 
Chris@16:   BOOST_TIMER_DECL
Chris@16:   std::string format(const cpu_times& times, short places = default_places); 
Chris@16: 
Chris@16: //  cpu_timer  -------------------------------------------------------------------------//
Chris@16: 
Chris@16:   class BOOST_TIMER_DECL cpu_timer
Chris@16:   {
Chris@16:   public:
Chris@16: 
Chris@16:     //  constructor
Chris@101:     cpu_timer() BOOST_NOEXCEPT                                   { start(); }
Chris@16: 
Chris@16:     //  observers
Chris@101:     bool          is_stopped() const BOOST_NOEXCEPT              { return m_is_stopped; }
Chris@101:     cpu_times     elapsed() const BOOST_NOEXCEPT;  // does not stop()
Chris@16:     std::string   format(short places, const std::string& format) const
Chris@16:                         { return ::boost::timer::format(elapsed(), places, format); }
Chris@16:     std::string   format(short places = default_places) const
Chris@16:                         { return ::boost::timer::format(elapsed(), places); }
Chris@16:     //  actions
Chris@101:     void          start() BOOST_NOEXCEPT;
Chris@101:     void          stop() BOOST_NOEXCEPT;
Chris@101:     void          resume() BOOST_NOEXCEPT; 
Chris@16: 
Chris@16:   private:
Chris@16:     cpu_times     m_times;
Chris@16:     bool          m_is_stopped;
Chris@16:   };
Chris@16: 
Chris@16: //  auto_cpu_timer  --------------------------------------------------------------------//
Chris@16: 
Chris@16:   class BOOST_TIMER_DECL auto_cpu_timer : public cpu_timer
Chris@16:   {
Chris@16:   public:
Chris@16: 
Chris@16:     //  Explicit defaults for os are not provided to avoid including <iostream>, which has
Chris@16:     //  high costs even when the standard streams are not actually used. Explicit defaults
Chris@16:     //  for format are not provided to avoid order-of-dynamic-initialization issues with a
Chris@16:     //  std::string.
Chris@16: 
Chris@16:     explicit auto_cpu_timer(short places = default_places);                          // #1
Chris@16:              auto_cpu_timer(short places, const std::string& format);                // #2
Chris@16:     explicit auto_cpu_timer(const std::string& format);                              // #3
Chris@16:              auto_cpu_timer(std::ostream& os, short places,
Chris@16:                             const std::string& format)                               // #4
Chris@16:                                    : m_places(places), m_os(&os), m_format(format)
Chris@16:                                    { start(); }
Chris@16:     explicit auto_cpu_timer(std::ostream& os, short places = default_places);        // #5
Chris@16:              auto_cpu_timer(std::ostream& os, const std::string& format)             // #6
Chris@16:                                    : m_places(default_places), m_os(&os), m_format(format)
Chris@16:                                    { start(); }
Chris@16: 
Chris@16:    ~auto_cpu_timer();
Chris@16: 
Chris@16:    //  observers
Chris@16:    //    not particularly useful to users, but allow testing of constructor
Chris@16:    //    postconditions and ease specification of other functionality without resorting
Chris@16:    //    to "for exposition only" private members.
Chris@16:    std::ostream&       ostream() const       { return *m_os; }
Chris@16:    short               places() const        { return m_places; }
Chris@16:    const std::string&  format_string() const { return m_format; }
Chris@16: 
Chris@16:     //  actions
Chris@16:     void   report(); 
Chris@16: 
Chris@16:   private:
Chris@16:     short           m_places;
Chris@16:     std::ostream*   m_os;      // stored as ptr so compiler can generate operator= 
Chris@16:     std::string     m_format;  
Chris@16:   };
Chris@16:    
Chris@16: } // namespace timer
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #   if defined(_MSC_VER)
Chris@16: #     pragma warning(pop) // restore warning settings.
Chris@16: #   endif 
Chris@16: 
Chris@16: #include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas
Chris@16: 
Chris@16: #endif  // BOOST_TIMER_TIMER_HPP