timer.hh

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#ifndef MISC_TIMER_HH
# define MISC_TIMER_HH

# include <iostream>
# include <stack>
# include <map>
# include <string>
# include <iosfwd>

namespace misc
{

  class timer
  {
  public:
    timer();
    timer(const timer& rhs);
    ~timer();

    void push(const std::string& name);

    void push(int i);

    void pop(const std::string& task_name);

    void pop(int i);

    void pop();

    void dump(std::ostream& out = std::cerr);

    void dump_on_destruction(std::ostream& out);

    void name(int i, const std::string& task_name);

    void start();

    void stop();

    timer& operator<<(const timer& rhs);

  private :
    class time_var;
    class time
    {
      friend class timer;
      friend class timer::time_var;
    public:
      time();

      time & operator+=(const time& rhs);

    private :
      long user;
      long sys;
      long wall;
    };

    class time_var
    {
    public:
      time_var();

      void start();
      void stop();

      bool is_zero();

      time begin;
      time elapsed;
      time first;
      time last;
      bool initial;
    };

    void timeinfo(long time, long total_time, std::ostream& out);

    typedef std::map<const std::string, time_var*> task_map_type;

    task_map_type tasksmap;

    std::stack<time_var*> tasks;

    std::map<int, std::string> intmap;

    time_var total;

    std::ostream* dump_stream;

    static const long clocks_per_sec;

  };

} // namespace misc

# include <misc/timer.hxx>

#endif // !MISC_TIMER_HH