1    	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2    	/*                                                                           */
3    	/*                  This file is part of the class library                   */
4    	/*       SoPlex --- the Sequential object-oriented simPlex.                  */
5    	/*                                                                           */
6    	/*  Copyright (c) 1996-2023 Zuse Institute Berlin (ZIB)                      */
7    	/*                                                                           */
8    	/*  Licensed under the Apache License, Version 2.0 (the "License");          */
9    	/*  you may not use this file except in compliance with the License.         */
10   	/*  You may obtain a copy of the License at                                  */
11   	/*                                                                           */
12   	/*      http://www.apache.org/licenses/LICENSE-2.0                           */
13   	/*                                                                           */
14   	/*  Unless required by applicable law or agreed to in writing, software      */
15   	/*  distributed under the License is distributed on an "AS IS" BASIS,        */
16   	/*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
17   	/*  See the License for the specific language governing permissions and      */
18   	/*  limitations under the License.                                           */
19   	/*                                                                           */
20   	/*  You should have received a copy of the Apache-2.0 license                */
21   	/*  along with SoPlex; see the file LICENSE. If not email to soplex@zib.de.  */
22   	/*                                                                           */
23   	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
24   	
25   	/**@file  wallclocktimer.h
26   	 * @brief WallclockTimer class.
27   	 */
28   	
29   	#ifndef _WALLCLOCK_TIMER_H_
30   	#define _WALLCLOCK_TIMER_H_
31   	
32   	#include "soplex/spxdefines.h"
33   	#include "soplex/timer.h"
34   	
35   	namespace soplex
36   	{
37   	
38   	class WallclockTimer : public Timer
39   	{
40   	private:
41   	
42   	   //------------------------------------
43   	   /**@name Data */
44   	   ///@{
45   	   mutable time_t sec;           ///< seconds
46   	   mutable time_t usec;          ///< microseconds
47   	
48   	   mutable Real lasttime;
49   	   ///@}
50   	
51   	   //------------------------------------
52   	   /**@name Internal helpers */
53   	   ///@{
54   	   /// convert wallclock time to secounds.
55   	   Real wall2sec(time_t s, time_t us) const
56   	   {
57   	      return (Real)s + 0.000001 * (Real)us;
58   	   }
59   	
60   	   ///@}
61   	
62   	public:
63   	
64   	   //------------------------------------
65   	   /**@name Construction / destruction */
66   	   ///@{
67   	   /// default constructor
68   	   WallclockTimer()
69   	      : Timer(), sec(0), usec(0), lasttime(0.0)
70   	   {}
71   	   /// copy constructor
72   	   WallclockTimer(const WallclockTimer& old)
73   	      : Timer(), sec(old.sec), usec(old.usec), lasttime(old.lasttime)
74   	   {}
75   	   /// assignment operator
76   	   WallclockTimer& operator=(const WallclockTimer& old)
77   	   {
78   	      sec = old.sec;
79   	      usec = old.usec;
80   	      lasttime = old.lasttime;
81   	      return *this;
82   	   }
83   	
84   	   virtual ~WallclockTimer()
85   	   {}
86   	   ///@}
87   	
88   	   //------------------------------------
89   	   /**@name Control */
90   	   ///@{
91   	   /// initialize timer, set timing accounts to zero.
92   	   virtual void reset()
93   	   {
94   	      status   = RESET;
95   	      sec = usec = 0;
96   	      lasttime = 0.0;
97   	   }
98   	
99   	   /// start timer, resume accounting user, system and real time.
100  	   virtual void start();
101  	
102  	   /// stop timer, return accounted user time.
103  	   virtual Real stop();
104  	
105  	   /// return type of timer
106  	   virtual TYPE type()
107  	   {
108  	      return WALLCLOCK_TIME;
109  	   }
110  	   ///@}
111  	
112  	   //------------------------------------
113  	   /**@name Access */
114  	   ///@{
115  	   virtual Real time() const;
116  	
117  	   virtual Real lastTime() const;
118  	
119  	   ///@}
120  	};
121  	} // namespace soplex
122  	#endif // _WALLCLOCK_TIMER_H_
123